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Peter KA, Voirol C, Kunz S, Gurtner A, Renggli F, Juvet T, Golz C. Factors associated with health professionals' stress reactions, job satisfaction, intention to leave and health-related outcomes in acute care, rehabilitation and psychiatric hospitals, nursing homes and home care organisations. BMC Health Serv Res 2024; 24:269. [PMID: 38431643 PMCID: PMC10909269 DOI: 10.1186/s12913-024-10718-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 02/14/2024] [Indexed: 03/05/2024] Open
Abstract
The aim of this study is to identify (1) the extent of work-related stress and (2) stressors associated with cognitive and behavioral stress reactions, burnout symptoms, health status, quality of sleep, job satisfaction, and intention to leave the organization and the profession among health professionals working in acute care /rehabilitation hospitals, psychiatric hospitals, nursing homes, and home care organizations. BACKGROUND Health professionals are faced with various stressors at work and as a consequence are leaving their profession prematurely. This study aimed to identify the extent of work-related stress and stressors associated with stress reactions, job satisfaction, and intention to leave and health-related outcomes among health professionals working in different healthcare sectors (acute care, rehabilitation and psychiatric hospitals, nursing homes and home care organizations). METHODS This study is based on a repeated cross-sectional design, which includes three data measures between 2017 and 2020 and 19,340 participating health professionals from 26 acute care / rehabilitation hospitals, 12 psychiatric hospitals, 86 nursing homes and 41 home care organizations in Switzerland. For data analysis, hierarchical multilevel models (using AIC) were calculated separately for hospitals, nursing homes, and home care organizations, regarding health professionals' stress symptoms, job satisfaction, intention to leave the organization / profession, general health status, burnout symptoms, and quality of sleep. RESULTS The main findings reveal that the incompatibility of health professionals' work and private life was significantly associated (p < 0.05) with their stress reactions, job satisfaction, intention to leave, and health-related outcomes in all the included work areas. The direct supervisor's good leadership qualities were also associated with health professionals' job satisfaction regarding all work areas (B ≥ 0.22, p = 0.000). In addition, a positive perceived bond with the organization (B ≥ 0.13, p < 0.01) and better development opportunities (B ≥ 0.05, p < 0.05) were associated with higher job satisfaction and a lower intention to leave the organization and profession among health professionals. Also, a younger age of health professionals was associated with a higher intention to leave the organization and the profession prematurely in all the included work areas. High physical (B ≥ 0.04, p < 0.05) and quantitative demands (B ≥ 0.05, p = 0.000) at work were also associated with negative health-related outcomes.
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Affiliation(s)
- Karin Anne Peter
- Department of Health Professions, Bern University of Applied Sciences, Bern, Switzerland.
| | - Christian Voirol
- Haute Ecole Arc Santé, University of Applied Sciences and Arts Western Switzerland, Neuchatel, Switzerland
- Department of Psychology, University of Montreal, Montreal, Canada
- Department of Medicine, University of Montreal, Montreal, Canada
| | - Stefan Kunz
- Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, Lugano, Switzerland
| | - Andrea Gurtner
- Institute New Work, Department of Business School, Bern University of Applied Sciences, Bern, Switzerland
| | - Fabienne Renggli
- Department of Health Professions, Bern University of Applied Sciences, Bern, Switzerland
| | - Typhaine Juvet
- Haute Ecole Arc Santé, University of Applied Sciences and Arts Western Switzerland, Neuchatel, Switzerland
| | - Christoph Golz
- Department of Health Professions, Bern University of Applied Sciences, Bern, Switzerland
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2
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Kotliar D, Raju S, Tabrizi S, Odia I, Goba A, Momoh M, Sandi JD, Nair P, Phelan E, Tariyal R, Eromon PE, Mehta S, Robles-Sikisaka R, Siddle KJ, Stremlau M, Jalloh S, Gire SK, Winnicki S, Chak B, Schaffner SF, Pauthner M, Karlsson EK, Chapin SR, Kennedy SG, Branco LM, Kanneh L, Vitti JJ, Broodie N, Gladden-Young A, Omoniwa O, Jiang PP, Yozwiak N, Heuklom S, Moses LM, Akpede GO, Asogun DA, Rubins K, Kales S, Happi AN, Iruolagbe CO, Dic-Ijiewere M, Iraoyah K, Osazuwa OO, Okonkwo AK, Kunz S, McCormick JB, Khan SH, Honko AN, Lander ES, Oldstone MBA, Hensley L, Folarin OA, Okogbenin SA, Günther S, Ollila HM, Tewhey R, Okokhere PO, Schieffelin JS, Andersen KG, Reilly SK, Grant DS, Garry RF, Barnes KG, Happi CT, Sabeti PC. Genome-wide association study identifies human genetic variants associated with fatal outcome from Lassa fever. Nat Microbiol 2024; 9:751-762. [PMID: 38326571 PMCID: PMC10914620 DOI: 10.1038/s41564-023-01589-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/14/2023] [Indexed: 02/09/2024]
Abstract
Infection with Lassa virus (LASV) can cause Lassa fever, a haemorrhagic illness with an estimated fatality rate of 29.7%, but causes no or mild symptoms in many individuals. Here, to investigate whether human genetic variation underlies the heterogeneity of LASV infection, we carried out genome-wide association studies (GWAS) as well as seroprevalence surveys, human leukocyte antigen typing and high-throughput variant functional characterization assays. We analysed Lassa fever susceptibility and fatal outcomes in 533 cases of Lassa fever and 1,986 population controls recruited over a 7 year period in Nigeria and Sierra Leone. We detected genome-wide significant variant associations with Lassa fever fatal outcomes near GRM7 and LIF in the Nigerian cohort. We also show that a haplotype bearing signatures of positive selection and overlapping LARGE1, a required LASV entry factor, is associated with decreased risk of Lassa fever in the Nigerian cohort but not in the Sierra Leone cohort. Overall, we identified variants and genes that may impact the risk of severe Lassa fever, demonstrating how GWAS can provide insight into viral pathogenesis.
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Affiliation(s)
- Dylan Kotliar
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA.
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA.
- Department of Internal Medicine, Brigham and Women's Hospital, Boston, MA, USA.
| | - Siddharth Raju
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA
| | - Shervin Tabrizi
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ikponmwosa Odia
- Institute of Lassa Fever, Research and Control, Irrua Specialist Teaching Hospital, Irrua, Nigeria
| | - Augustine Goba
- College of Medicine and Allied Health Sciences, University of Sierra Leone, Freetown, Sierra Leone
| | - Mambu Momoh
- College of Medicine and Allied Health Sciences, University of Sierra Leone, Freetown, Sierra Leone
- Eastern Polytechnic College, Kenema, Sierra Leone
| | - John Demby Sandi
- College of Medicine and Allied Health Sciences, University of Sierra Leone, Freetown, Sierra Leone
| | - Parvathy Nair
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | | | | | - Philomena E Eromon
- Institute of Lassa Fever, Research and Control, Irrua Specialist Teaching Hospital, Irrua, Nigeria
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Nigeria
| | - Samar Mehta
- Department of Critical Care Medicine, University of Maryland Medical Center, Baltimore, MA, USA
| | - Refugio Robles-Sikisaka
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, USA
| | - Katherine J Siddle
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
| | | | - Simbirie Jalloh
- College of Medicine and Allied Health Sciences, University of Sierra Leone, Freetown, Sierra Leone
| | | | - Sarah Winnicki
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
| | - Bridget Chak
- Biological Sciences Division, University of Chicago, Chicago, IL, USA
| | - Stephen F Schaffner
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA
| | | | - Elinor K Karlsson
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
- Genomics and Computational Biology, UMass Chan Medical School, Worcester, MA, USA
- Program in Molecular Medicine, UMass Chan Medical School, Worcester, MA, USA
| | - Sarah R Chapin
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
| | - Sharon G Kennedy
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | | | - Lansana Kanneh
- Viral Hemorrhagic Fever Program, Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
| | - Joseph J Vitti
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
| | - Nisha Broodie
- New York-Presbyterian Hospital-Columbia and Cornell, New York, NY, USA
| | - Adrianne Gladden-Young
- Molecular Microbiology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA
| | | | | | - Nathan Yozwiak
- Gene and Cell Therapy Institute, Mass General Brigham, Cambridge, MA, USA
| | - Shannon Heuklom
- San Francisco Community Health Center, San Francisco, CA, USA
| | - Lina M Moses
- Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, USA
| | - George O Akpede
- Institute of Lassa Fever, Research and Control, Irrua Specialist Teaching Hospital, Irrua, Nigeria
- Department of Medicine, Ambrose Alli University, Ekpoma, Nigeria
| | - Danny A Asogun
- Department of Community Medicine, Ambrose Alli University, Ekpoma, Nigeria
| | - Kathleen Rubins
- National Aeronautics and Space Administration, Houston, TX, USA
| | | | - Anise N Happi
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Nigeria
| | | | - Mercy Dic-Ijiewere
- Department of Medicine, Irrua Specialist Teaching Hospital, Irrua, Nigeria
| | - Kelly Iraoyah
- Department of Medicine, Irrua Specialist Teaching Hospital, Irrua, Nigeria
| | - Omoregie O Osazuwa
- Department of Medicine, Irrua Specialist Teaching Hospital, Irrua, Nigeria
| | | | - Stefan Kunz
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Joseph B McCormick
- UTHealth Houston School of Public Health, Brownsville Campus, Brownsville, TX, USA
| | - S Humarr Khan
- College of Medicine and Allied Health Sciences, University of Sierra Leone, Freetown, Sierra Leone
| | - Anna N Honko
- Boston University School of Medicine, Boston, MA, USA
| | - Eric S Lander
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA
- Department of Biology, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA
| | - Michael B A Oldstone
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, USA
| | - Lisa Hensley
- National Institutes of Health Integrated Research Facility, Frederick, MA, USA
| | - Onikepe A Folarin
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Nigeria
- Department of Biological Sciences, Redeemer's University, Ede, Nigeria
| | - Sylvanus A Okogbenin
- Institute of Lassa Fever, Research and Control, Irrua Specialist Teaching Hospital, Irrua, Nigeria
| | - Stephan Günther
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Hanna M Ollila
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
- Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | | | - Peter O Okokhere
- Institute of Lassa Fever, Research and Control, Irrua Specialist Teaching Hospital, Irrua, Nigeria
- Department of Medicine, Ambrose Alli University, Ekpoma, Nigeria
- Department of Medicine, Irrua Specialist Teaching Hospital, Irrua, Nigeria
| | - John S Schieffelin
- Section of Infectious Disease, Department of Pediatrics, Tulane University School of Medicine, New Orleans, LA, USA
| | - Kristian G Andersen
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, USA
| | - Steven K Reilly
- Department of Genetics, Yale School of Medicine, New Haven, CT, USA
| | - Donald S Grant
- College of Medicine and Allied Health Sciences, University of Sierra Leone, Freetown, Sierra Leone
- Viral Hemorrhagic Fever Program, Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
| | - Robert F Garry
- Tulane University School of Medicine, New Orleans, LA, USA
| | - Kayla G Barnes
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Kamuzu University of Health Sciences, Blantyre, Malawi
- Department of Vector Biology and Tropical Disease Biology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Christian T Happi
- African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), Redeemer's University, Ede, Nigeria.
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA.
- Department of Biological Sciences, Redeemer's University, Ede, Nigeria.
| | - Pardis C Sabeti
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, USA.
- Howard Hughes Medical Institute, Chevy Chase, MD, USA.
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA.
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA.
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
- Massachusetts Consortium on Pathogen Readiness, Boston, MA, USA.
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Stadtmann MP, Bischofberger I, Balice-Bourgois C, Bianchi M, Burr C, Fierz K, de Goumoëns V, Kocher A, Kunz S, Naef R, Bachmann AO, Schubert M, Schwendimann R, Simon M, Waldboth V, Zanon-Di Nardo D, Nicca D, Zigan N. Setting new priorities for nursing research: The updated Swiss Nursing Research Agenda-a systematic, participative approach. Int Nurs Rev 2024. [PMID: 38197742 DOI: 10.1111/inr.12937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 12/22/2023] [Indexed: 01/11/2024]
Abstract
AIM To identify current key areas for nursing research in Switzerland, we revised the Swiss Research Agenda for Nursing (SRAN) initially published in 2008. BACKGROUND By developing a research agenda, nursing researchers internationally prioritize and cluster relevant topics within the research community. The process should be collaborative and systematic to provide credible information for decisionmakers in health care research, policy, and practice. SOURCES OF EVIDENCE After a participative, systematic, and critical evaluation within and outside of the Swiss Association for Nursing Science, the updated SRAN 2019-2029 defines four research priorities (new models of care, nursing care interventions, work and care environment, and quality of care and patient safety) and four transversal themes (organization of research, research methodologies, research in health care policy and public health perspectives). CONCLUSION Adding to other national nursing research agendas, the categories are organized in a framework of key research priorities and transversal themes. They relate to the importance of global and local foci of research as well as challenges in health care services and policy systems. The agenda is an important prerequisite for enhancing the influence of nursing research in Switzerland and provides guidance for the next decade. IMPLICATIONS FOR NURSING PRACTICE The revised agenda ensures that research projects target key knowledge gaps and the discipline's core questions in respective countries. IMPLICATIONS FOR HEALTH POLICY Nursing research should inform and influence health policy on all institutional and political levels. Therefore, the integration of public health perspectives in research is one of the most important new aspects of SRAN 2019-2029.
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Affiliation(s)
- Manuel P Stadtmann
- Department of Health, Eastern Switzerland University of Applied Sciences, St. Gallen, Switzerland
| | | | - Colette Balice-Bourgois
- Institute of Paediatrics of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Monica Bianchi
- Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, Manno, Switzerland
| | - Christian Burr
- Department of Health, Institut of Nursing, Bern University of Applied Sciences, Bern, Switzerland
| | - Katharina Fierz
- School of Health Sciences, Institute of Nursing, ZHAW Zurich University of Applied Sciences, Winterthur, Switzerland
| | | | - Agnes Kocher
- Institute of Nursing Science, Department Public Health, Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Stefan Kunz
- Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, Manno, Switzerland
| | - Rahel Naef
- Institute for Implementation Science in Health Care, Faculty of Medicine, University of Zürich, Zürich, Switzerland
- Centre of Clinical Nursing Science, University Hospital Zurich, Zürich, Switzerland
| | | | - Maria Schubert
- School of Health Sciences, Institute of Nursing, ZHAW Zurich University of Applied Sciences, Winterthur, Switzerland
| | - René Schwendimann
- Institute of Nursing Science, Department Public Health, Faculty of Medicine, University of Basel, Basel, Switzerland
- Medizinische Direktion Pflege/MTT, Universitätsspital Basel, Markgräflerhof, Basel, Switzerland
| | - Michael Simon
- Institute of Nursing Science, Department Public Health, Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Veronika Waldboth
- School of Health Sciences, Institute of Nursing, ZHAW Zurich University of Applied Sciences, Winterthur, Switzerland
| | | | - Dunja Nicca
- Institut of Epidemiology, Biostatistics and Prevention, University of Zürich, Zurich, Switzerland
| | - Nicole Zigan
- School of Health Sciences, Institute of Nursing, ZHAW Zurich University of Applied Sciences, Winterthur, Switzerland
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Löw K, Möller R, Stegmann C, Becker M, Rehburg L, Obernolte H, Schaudien D, Oestereich L, Braun A, Kunz S, Gerold G. Luminescent reporter cells enable the identification of broad-spectrum antivirals against emerging viruses. J Med Virol 2023; 95:e29211. [PMID: 37975336 DOI: 10.1002/jmv.29211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 09/29/2023] [Accepted: 10/21/2023] [Indexed: 11/19/2023]
Abstract
The emerging viruses SARS-CoV-2 and arenaviruses cause severe respiratory and hemorrhagic diseases, respectively. The production of infectious particles of both viruses and virus spread in tissues requires cleavage of surface glycoproteins (GPs) by host proprotein convertases (PCs). SARS-CoV-2 and arenaviruses rely on GP cleavage by PCs furin and subtilisin kexin isozyme-1/site-1 protease (SKI-1/S1P), respectively. We report improved luciferase-based reporter cell lines, named luminescent inducible proprotein convertase reporter cells that we employ to monitor PC activity in its authentic subcellular compartment. Using these sensor lines we screened a small compound library in high-throughput manner. We identified 23 FDA-approved small molecules, among them monensin which displayed broad activity against furin and SKI-1/S1P. Monensin inhibited arenaviruses and SARS-CoV-2 in a dose-dependent manner. We observed a strong reduction in infectious particle release upon monensin treatment with little effect on released genome copies. This was reflected by inhibition of SARS-CoV-2 spike processing suggesting the release of immature particles. In a proof of concept experiment using human precision cut lung slices, monensin potently inhibited SARS-CoV-2 infection, evidenced by reduced infectious particle release. We propose that our PC sensor pipeline is a suitable tool to identify broad-spectrum antivirals with therapeutic potential to combat current and future emerging viruses.
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Affiliation(s)
- Karin Löw
- Department of Biochemistry & Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Hannover, Germany
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Rebecca Möller
- Department of Biochemistry & Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Hannover, Germany
| | - Cora Stegmann
- Department of Biochemistry & Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Hannover, Germany
| | - Miriam Becker
- Department of Biochemistry & Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Hannover, Germany
| | - Laura Rehburg
- Department of Biochemistry & Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Hannover, Germany
| | - Helena Obernolte
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Hannover, Germany
- Fraunhofer International Consortium for Anti-Infective Research (iCAIR), Hannover, Germany
- Fraunhofer Cluster of Excellence Immune-Mediated Diseases, (CIMD), Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease (BREATH) Research Network, Hannover, Germany
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Dirk Schaudien
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Hannover, Germany
- Fraunhofer International Consortium for Anti-Infective Research (iCAIR), Hannover, Germany
- Fraunhofer Cluster of Excellence Immune-Mediated Diseases, (CIMD), Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease (BREATH) Research Network, Hannover, Germany
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Lisa Oestereich
- Department of Virology, Bernhard-Nocht Institute for Tropical Medicine, Hamburg, Germany
- German Center for Infectious Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Hamburg
| | - Armin Braun
- Fraunhofer Institute for Toxicology and Experimental Medicine (ITEM), Hannover, Germany
- Fraunhofer International Consortium for Anti-Infective Research (iCAIR), Hannover, Germany
- Fraunhofer Cluster of Excellence Immune-Mediated Diseases, (CIMD), Hannover, Germany
- Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease (BREATH) Research Network, Hannover, Germany
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Stefan Kunz
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Gisa Gerold
- Department of Biochemistry & Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Hannover, Germany
- Department of Clinical Microbiology, Umeå University, Sweden
- Wallenberg Centre for Molecular Medicine (WCMM), Umeå University, Sweden
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Rumschlag SL, Mahon MB, Jones DK, Battaglin W, Behrens J, Bernhardt ES, Bradley P, Brown E, De Laender F, Hill R, Kunz S, Lee S, Rosi E, Schäfer R, Schmidt TS, Simonin M, Smalling K, Voss K, Rohr JR. Density declines, richness increases, and composition shifts in stream macroinvertebrates. Sci Adv 2023; 9:eadf4896. [PMID: 37134169 PMCID: PMC10156106 DOI: 10.1126/sciadv.adf4896] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Documenting trends of stream macroinvertebrate biodiversity is challenging because biomonitoring often has limited spatial, temporal, and taxonomic scopes. We analyzed biodiversity and composition of assemblages of >500 genera, spanning 27 years, and 6131 stream sites across forested, grassland, urban, and agricultural land uses throughout the United States. In this dataset, macroinvertebrate density declined by 11% and richness increased by 12.2%, and insect density and richness declined by 23.3 and 6.8%, respectively, over 27 years. In addition, differences in richness and composition between urban and agricultural versus forested and grassland streams have increased over time. Urban and agricultural streams lost the few disturbance-sensitive taxa they once had and gained disturbance-tolerant taxa. These results suggest that current efforts to protect and restore streams are not sufficient to mitigate anthropogenic effects.
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Affiliation(s)
- Samantha L Rumschlag
- Department of Biological Sciences, Environmental Change Initiative, and Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, USA
- Great Lakes Toxicology and Ecology Division, U.S. Environmental Protection Agency, Duluth, MN, USA
| | - Michael B Mahon
- Department of Biological Sciences, Environmental Change Initiative, and Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, USA
| | - Devin K Jones
- Department of Biological Sciences, Environmental Change Initiative, and Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, USA
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA
| | - William Battaglin
- Colorado Water Science Center, U.S. Geological Survey, Denver, CO, USA
| | - Jonny Behrens
- Department of Biology, Duke University, Durham, NC, USA
| | | | - Paul Bradley
- South Atlantic Water Science Center, U.S. Geological Survey, Columbia, SC, USA
| | - Ethan Brown
- Department of Biological Sciences, Environmental Change Initiative, and Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, USA
| | - Frederik De Laender
- Research Unit of Environmental and Evolutionary Biology, Namur Institute of Complex Systems, and Institute of Life, Earth, and the Environment, University of Namur, Namur, Belgium
| | - Ryan Hill
- Pacific Ecological Systems Division, U.S. Environmental Protection Agency, Corvallis, OR, USA
| | - Stefan Kunz
- Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany
| | - Sylvia Lee
- Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Washington, DC, USA
| | - Emma Rosi
- Cary Institute of Ecosystem Studies, Millbrook, NY, USA
| | - Ralf Schäfer
- Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany
| | - Travis S Schmidt
- Wyoming-Montana Water Science Center, U.S. Geological Survey, Helena, MT, USA
| | - Marie Simonin
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000 Angers, France
| | - Kelly Smalling
- New Jersey Water Science Center, U.S. Geological Survey, Lawrenceville, NJ, USA
| | - Kristofor Voss
- Department of Biology, Regis University, Denver, CO, USA
| | - Jason R Rohr
- Department of Biological Sciences, Environmental Change Initiative, and Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, USA
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6
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Drenker C, El Mazouar D, Bücker G, Weißhaupt S, Wienke E, Koch E, Kunz S, Reineke A, Rondot Y, Linkies A. Characterization of a Disease-Suppressive Isolate of Lysobacter enzymogenes with Broad Antagonistic Activity against Bacterial, Oomycetal and Fungal Pathogens in Different Crops. Plants (Basel) 2023; 12:682. [PMID: 36771766 PMCID: PMC9920595 DOI: 10.3390/plants12030682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/23/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Although synthetic pesticides play a major role in plant protection, their application needs to be reduced because of their negative impact on the environment. This applies also to copper preparations, which are used in organic farming. For this reason, alternatives with less impact on the environment are urgently needed. In this context, we evaluated eight isolates of the genus Lysobacter (mainly Lysobacter enzymogenes) for their activity against plant pathogens. In vitro, the investigated Lysobacter isolates showed broad antagonistic activity against several phytopathogenic fungi, oomycetes and bacteria. Enzyme assays revealed diverse activities for the tested isolates. The most promising L. enzymogenes isolate (LEC) was used for further detailed analyses of its efficacy and effective working concentrations. The experiments included in vitro spore and sporangia germination tests and leaf disc assays as well as ad planta growth chamber trials against Alternaria solani and Phytophthora infestans on tomato plants, Pseudoperonospora cubensis on cucumbers and Venturia inaequalis on young potted apple trees. When applied on leaves, dilutions of a culture suspension of LEC had a concentration-dependent, protective effect against the tested pathogens. In all pathosystems tested, the effective concentrations were in the range of 2.5-5% and similarly efficacious to common plant protection agents containing copper hydroxide, wettable sulphur or fenhexamid. Thus, the isolate of L. enzymogenes identified in this study exhibits a broad activity against common plant pathogens and is therefore a promising candidate for the development of a microbial biocontrol agent.
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Affiliation(s)
- Christian Drenker
- Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Biological Control, 69221 Dossenheim, Germany
| | - Doris El Mazouar
- Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Biological Control, 69221 Dossenheim, Germany
| | - Gerrit Bücker
- Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Biological Control, 69221 Dossenheim, Germany
- Department of Crop Protection, Hochschule Geisenheim University, 65366 Geisenheim, Germany
| | | | | | - Eckhard Koch
- Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Biological Control, 69221 Dossenheim, Germany
| | | | - Annette Reineke
- Department of Crop Protection, Hochschule Geisenheim University, 65366 Geisenheim, Germany
| | - Yvonne Rondot
- Department of Crop Protection, Hochschule Geisenheim University, 65366 Geisenheim, Germany
| | - Ada Linkies
- Julius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Biological Control, 69221 Dossenheim, Germany
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7
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Zheng Y, Müller J, Kunz S, Siderius M, Maes L, Caljon G, Müller N, Hemphill A, Sterk GJ, Leurs R. 3-nitroimidazo[1,2-b]pyridazine as a novel scaffold for antiparasitics with sub-nanomolar anti-Giardia lamblia activity. Int J Parasitol Drugs Drug Resist 2022; 19:47-55. [PMID: 35716585 PMCID: PMC9213561 DOI: 10.1016/j.ijpddr.2022.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 11/26/2022]
Abstract
As there is a continuous need for novel anti-infectives, the present study aimed to fuse two modes of action into a novel 3-nitroimidazo[1,2-b]pyridazine scaffold to improve antiparasitic efficacy. For this purpose, we combined known structural elements of phosphodiesterase inhibitors, a target recently proposed for Trypanosoma brucei and Giardia lamblia, with a nitroimidazole scaffold to generate nitrosative stress. The compounds were evaluated in vitro against a panel of protozoal parasites, namely Giardia lamblia, Trypanosoma brucei, T. cruzi, Leishmania infantum and Plasmodium falciparum and for cytotoxicity on MRC-5 cells. Interestingly, selective sub-nanomolar activity was obtained against G. lamblia, and by testing several analogues with and without the nitro group, it was shown that the presence of a nitro group, but not PDE inhibition, is responsible for the low IC50 values of these novel compounds. Adding the favourable drug-like properties (low molecular weight, cLogP (1.2–4.1) and low polar surface area), the key compounds from the 3-nitroimidazo[1,2-b]pyridazine series can be considered as valuable hits for further anti-giardiasis drug exploration and development. Analogues fusing a nitroimidazole moiety and a PDE inhibitor scaffold were prepared. These compounds were tested in vitro against a panel of protozoal parasites. Against Giardia lamblia, sub-nanomolar IC50 values were determined. PDE inhibition provided no significant contribution to the anti-Giardia potency. High potency with drug-like properties warrants further study of this hit series.
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8
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Mueller L, Moreno H, Kunz S, Greub G. Lausannevirus bilevel set-points. New Microbes New Infect 2022; 46:100966. [PMID: 35330592 PMCID: PMC8938865 DOI: 10.1016/j.nmni.2022.100966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 01/28/2022] [Accepted: 02/14/2022] [Indexed: 11/25/2022] Open
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9
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Nicolay W, Moeller R, Kahl S, Vondran FWR, Pietschmann T, Kunz S, Gerold G. Characterization of RNA Sensing Pathways in Hepatoma Cell Lines and Primary Human Hepatocytes. Cells 2021; 10:3019. [PMID: 34831243 PMCID: PMC8616302 DOI: 10.3390/cells10113019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/30/2021] [Accepted: 11/02/2021] [Indexed: 11/23/2022] Open
Abstract
The liver is targeted by several human pathogenic RNA viruses for viral replication and dissemination; despite this, the extent of innate immune sensing of RNA viruses by human hepatocytes is insufficiently understood to date. In particular, for highly human tropic viruses such as hepatitis C virus, cell culture models are needed to study immune sensing. However, several human hepatoma cell lines have impaired RNA sensing pathways and fail to mimic innate immune responses in the human liver. Here we compare the RNA sensing properties of six human hepatoma cell lines, namely Huh-6, Huh-7, HepG2, HepG2-HFL, Hep3B, and HepaRG, with primary human hepatocytes. We show that primary liver cells sense RNA through retinoic acid-inducible gene I (RIG-I) like receptor (RLR) and Toll-like receptor 3 (TLR3) pathways. Of the tested cell lines, Hep3B cells most closely mimicked the RLR and TLR3 mediated sensing in primary hepatocytes. This was shown by the expression of RLRs and TLR3 as well as the expression and release of bioactive interferon in primary hepatocytes and Hep3B cells. Our work shows that Hep3B cells partially mimic RNA sensing in primary hepatocytes and thus can serve as in vitro model to study innate immunity to RNA viruses in hepatocytes.
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Affiliation(s)
- Wiebke Nicolay
- TWINCORE—Centre for Experimental and Clinical Infection Research, Institute for Experimental Virology, 30625 Hannover, Germany; (W.N.); (R.M.); (S.K.); (T.P.)
| | - Rebecca Moeller
- TWINCORE—Centre for Experimental and Clinical Infection Research, Institute for Experimental Virology, 30625 Hannover, Germany; (W.N.); (R.M.); (S.K.); (T.P.)
- Center for Emerging Infections and Zoonoses (RIZ), Institute of Biochemistry & Research, University of Veterinary Medicine Hannover, 30625 Hannover, Germany
| | - Sina Kahl
- TWINCORE—Centre for Experimental and Clinical Infection Research, Institute for Experimental Virology, 30625 Hannover, Germany; (W.N.); (R.M.); (S.K.); (T.P.)
| | - Florian W. R. Vondran
- Department of General, Visceral and Transplant Surgery, Hannover Medical School, 30625 Hannover, Germany;
- German Centre for Infection Research (DZIF), 30100 Braunschweig, Germany
| | - Thomas Pietschmann
- TWINCORE—Centre for Experimental and Clinical Infection Research, Institute for Experimental Virology, 30625 Hannover, Germany; (W.N.); (R.M.); (S.K.); (T.P.)
| | - Stefan Kunz
- Institute of Microbiology, Lausanne University Hospital, CH-1011 Lausanne, Switzerland;
| | - Gisa Gerold
- TWINCORE—Centre for Experimental and Clinical Infection Research, Institute for Experimental Virology, 30625 Hannover, Germany; (W.N.); (R.M.); (S.K.); (T.P.)
- Center for Emerging Infections and Zoonoses (RIZ), Institute of Biochemistry & Research, University of Veterinary Medicine Hannover, 30625 Hannover, Germany
- Department of Clinical Microbiology, Virology, Umeå University, SE-90185 Umeå, Sweden
- Wallenberg Centre for Molecular Medicine (WCMM), Umeå University, SE-90185 Umeå, Sweden
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10
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Rissanen I, Krumm SA, Stass R, Whitaker A, Voss JE, Bruce EA, Rothenberger S, Kunz S, Burton DR, Huiskonen JT, Botten JW, Bowden TA, Doores KJ. Structural Basis for a Neutralizing Antibody Response Elicited by a Recombinant Hantaan Virus Gn Immunogen. mBio 2021; 12:e0253120. [PMID: 34225492 PMCID: PMC8406324 DOI: 10.1128/mbio.02531-20] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Hantaviruses are a group of emerging pathogens capable of causing severe disease upon zoonotic transmission to humans. The mature hantavirus surface presents higher-order tetrameric assemblies of two glycoproteins, Gn and Gc, which are responsible for negotiating host cell entry and constitute key therapeutic targets. Here, we demonstrate that recombinantly derived Gn from Hantaan virus (HTNV) elicits a neutralizing antibody response (serum dilution that inhibits 50% infection [ID50], 1:200 to 1:850) in an animal model. Using antigen-specific B cell sorting, we isolated monoclonal antibodies (mAbs) exhibiting neutralizing and non-neutralizing activity, termed mAb HTN-Gn1 and mAb nnHTN-Gn2, respectively. Crystallographic analysis reveals that these mAbs target spatially distinct epitopes at disparate sites of the N-terminal region of the HTNV Gn ectodomain. Epitope mapping onto a model of the higher order (Gn-Gc)4 spike supports the immune accessibility of the mAb HTN-Gn1 epitope, a hypothesis confirmed by electron cryo-tomography of the antibody with virus-like particles. These data define natively exposed regions of the hantaviral Gn that can be targeted in immunogen design. IMPORTANCE The spillover of pathogenic hantaviruses from rodent reservoirs into the human population poses a continued threat to human health. Here, we show that a recombinant form of the Hantaan virus (HTNV) surface-displayed glycoprotein, Gn, elicits a neutralizing antibody response in rabbits. We isolated a neutralizing (HTN-Gn1) and a non-neutralizing (nnHTN-Gn2) monoclonal antibody and provide the first molecular-level insights into how the Gn glycoprotein may be targeted by the antibody-mediated immune response. These findings may guide rational vaccine design approaches focused on targeting the hantavirus glycoprotein envelope.
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Affiliation(s)
- Ilona Rissanen
- Division of Structural Biology, Wellcome Centre for Human Genetics, grid.4991.5University of Oxford, Oxford, United Kingdom
- Institute of Biotechnology and Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Stefanie A. Krumm
- Department of Infectious Diseases, King's College London, London, United Kingdom
| | - Robert Stass
- Division of Structural Biology, Wellcome Centre for Human Genetics, grid.4991.5University of Oxford, Oxford, United Kingdom
| | - Annalis Whitaker
- Division of Immunobiology, Department of Medicine, Larner College of Medicine, grid.59062.38University of Vermont, Burlington, Vermont, USA
- Cellular, Molecular, and Biomedical Sciences Graduate Program, grid.59062.38University of Vermont, Burlington, Vermont, USA
| | - James E. Voss
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
| | - Emily A. Bruce
- Division of Immunobiology, Department of Medicine, Larner College of Medicine, grid.59062.38University of Vermont, Burlington, Vermont, USA
- Department of Microbiology and Molecular Genetics, Larner College of Medicine, grid.59062.38University of Vermont, Burlington, Vermont, USA
| | - Sylvia Rothenberger
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Stefan Kunz
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Dennis R. Burton
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
- Ragon Institute of MGH, Harvard, and MIT, Cambridge, Massachusetts, USA
| | - Juha T. Huiskonen
- Division of Structural Biology, Wellcome Centre for Human Genetics, grid.4991.5University of Oxford, Oxford, United Kingdom
- Institute of Biotechnology and Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Jason W. Botten
- Division of Immunobiology, Department of Medicine, Larner College of Medicine, grid.59062.38University of Vermont, Burlington, Vermont, USA
- Department of Microbiology and Molecular Genetics, Larner College of Medicine, grid.59062.38University of Vermont, Burlington, Vermont, USA
| | - Thomas A. Bowden
- Division of Structural Biology, Wellcome Centre for Human Genetics, grid.4991.5University of Oxford, Oxford, United Kingdom
| | - Katie J. Doores
- Department of Infectious Diseases, King's College London, London, United Kingdom
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11
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Bischoff S, Poletti SC, Kunz S, Kiessling SY, Hinder D, Dreher A, Akdis CA, Soyka MB. Trigeminal endonasal perception - an outcome predictor for septoplasty. Rhinology 2021; 58:437-443. [PMID: 32500869 DOI: 10.4193/rhin19.292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND No adequate test exists to predict outcome after septoplasty. Despite adequate surgery, patients still might experience nasal breathing impairment. The aim of this study was to determine if pre-operative trigeminal sensitivity can predict satisfaction after septoplasty. METHODS Single centre prospective cohort study in tertiary referral centre with follow-up time of 6 weeks postoperatively. Patients scheduled for septoplasty or septorhinoplasty with turbinoplasty were consecutively selected the day before surgery. Standard preoperative examinations (acoustic rhinometry and Sniffin’ Sticks 12 test), the evaluation of nasal obstruction on a visual analogue scale (VAS) and the trigeminal lateralisation task were performed before and 6 weeks after surgery. Biopsies were taken during surgery and TRPV1 mRNA expression was measured by PCR. RESULTS Thirty patients were included with a median age of 29 years and equal gender distribution. Trigeminal perception and sensation of nasal obstruction showed a significant correlation: preoperative lateralisation test scores, representing endonasal trigeminal sensitivity, correlated significantly with the mean VAS change scores, which demonstrate subjective improvement. A lateralisation test score of 31.5 and more had a sensitivity of 88% to predict an improvement of more than 3 VAS points. Additionally, high TRPV1 mRNA expression was linked with good postoperative VAS scores. CONCLUSION The preoperative evaluation of the trigeminal sensitivity could improve patients’ selection for septoplasty with a higher rate of satisfaction. Endonasal trigeminal sensitivity is directly linked with subjective outcome. Therefore, patients with low trigeminal sensitivity should undergo septoplasty only after thorough counselling.
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Affiliation(s)
- S Bischoff
- Department of Otorhinolaryngology Head and Neck Surgery, University of Zurich and University Hospital Zurich, Zurich, Switzerland
| | - S C Poletti
- Department of Otorhinolaryngology Head and Neck Surgery, University of Zurich and University Hospital Zurich, Zurich, Switzerland; Smell and Taste Clinic, Department of Otorhinolaryngology, Technische Universitat Dresden, Dresden, Germany; Department of Otorhinolaryngology-Head and Neck Surgery, University of Tubingen, Tubingen, Germany
| | - S Kunz
- Department of Otorhinolaryngology Head and Neck Surgery, University of Zurich and University Hospital Zurich, Zurich, Switzerland
| | - S-Y Kiessling
- Department of Otorhinolaryngology Head and Neck Surgery, Kantonsspital St.Gallen, St.Gallen, Switzerland
| | - D Hinder
- Department of Otorhinolaryngology Head and Neck Surgery, Luzerner Kantonsspital, Luzern, Switzerland
| | - A Dreher
- Swiss Institute of Asthma and Allergy Research (SIAF), University of Zurich, Davos Switzerland
| | - C A Akdis
- Swiss Institute of Asthma and Allergy Research (SIAF), University of Zurich, Davos Switzerland
| | - M B Soyka
- Department of Otorhinolaryngology Head and Neck Surgery, University of Zurich and University Hospital Zurich, Zurich, Switzerland
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12
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Schreiner VC, Link M, Kunz S, Szöcs E, Scharmüller A, Vogler B, Beck B, Battes KP, Cimpean M, Singer HP, Hollender J, Schäfer RB. Paradise lost? Pesticide pollution in a European region with considerable amount of traditional agriculture. Water Res 2021; 188:116528. [PMID: 33126003 DOI: 10.1016/j.watres.2020.116528] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/09/2020] [Accepted: 10/16/2020] [Indexed: 05/26/2023]
Abstract
Pesticide contamination of agricultural streams has widely been analysed in regions of high intensity agriculture such as in Western Europe or North America. The situation of streams subject to low intensity agriculture relying on human and animal labour, as in parts of Romania, remains unknown. To close this gap, we determined concentrations of 244 pesticides and metabolites at 19 low-order streams, covering sites from low to high intensity agriculture in a region of Romania. Pesticides were sampled with two passive sampling methods (styrene-divinylbenzene (SDB) disks and polydimethylsiloxane (PDMS) sheets) during three rainfall events and at base flow. Using the toxic unit approach, we assessed the toxicity towards algae and invertebrates. Up to 50 pesticides were detected simultaneously, resulting in sum concentrations between 0.02 and 37 µg L-1. Both, the sum concentration as well as the toxicities were in a similar range as in high intensity agricultural streams of Western Europe. Different proxies of agricultural intensity did not relate to in-stream pesticide toxicity, contradicting the assumption of previous studies. The toxicity towards invertebrates was positively related to large scale variables such as the catchment size and the agricultural land use in the upstream catchment and small scale variables including riparian plant height, whereas the toxicity to algae showed no relationship to any of the variables. Our results suggest that streams in low intensity agriculture, despite a minor reported use of agrochemicals, exhibit similar levels of pesticide pollution as in regions of high intensity agriculture.
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Affiliation(s)
- Verena C Schreiner
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany.
| | - Moritz Link
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany
| | - Stefan Kunz
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany
| | - Eduard Szöcs
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany
| | - Andreas Scharmüller
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany
| | - Bernadette Vogler
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Birgit Beck
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Karina P Battes
- Department of Taxonomy and Ecology, Faculty of Biology and Geology, Babeș-Bolyai University, 5-7 Clinicilor Str, 400006 Cluj-Napoca, Romania
| | - Mirela Cimpean
- Department of Taxonomy and Ecology, Faculty of Biology and Geology, Babeș-Bolyai University, 5-7 Clinicilor Str, 400006 Cluj-Napoca, Romania
| | - Heinz P Singer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Juliane Hollender
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Ralf B Schäfer
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany
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Moreno H, Rastrojo A, Pryce R, Fedeli C, Zimmer G, Bowden TA, Gerold G, Kunz S. A novel circulating tamiami mammarenavirus shows potential for zoonotic spillover. PLoS Negl Trop Dis 2020; 14:e0009004. [PMID: 33370288 PMCID: PMC7794035 DOI: 10.1371/journal.pntd.0009004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 01/08/2021] [Accepted: 11/23/2020] [Indexed: 11/18/2022] Open
Abstract
A detailed understanding of the mechanisms underlying the capacity of a virus to break the species barrier is crucial for pathogen surveillance and control. New World (NW) mammarenaviruses constitute a diverse group of rodent-borne pathogens that includes several causative agents of severe viral hemorrhagic fever in humans. The ability of the NW mammarenaviral attachment glycoprotein (GP) to utilize human transferrin receptor 1 (hTfR1) as a primary entry receptor plays a key role in dictating zoonotic potential. The recent isolation of Tacaribe and lymphocytic choriominingitis mammarenaviruses from host-seeking ticks provided evidence for the presence of mammarenaviruses in arthropods, which are established vectors for numerous other viral pathogens. Here, using next generation sequencing to search for other mammarenaviruses in ticks, we identified a novel replication-competent strain of the NW mammarenavirus Tamiami (TAMV-FL), which we found capable of utilizing hTfR1 to enter mammalian cells. During isolation through serial passaging in mammalian immunocompetent cells, the quasispecies of TAMV-FL acquired and enriched mutations leading to the amino acid changes N151K and D156N, within GP. Cell entry studies revealed that both substitutions, N151K and D156N, increased dependence of the virus on hTfR1 and binding to heparan sulfate proteoglycans. Moreover, we show that the substituted residues likely map to the sterically constrained trimeric axis of GP, and facilitate viral fusion at a lower pH, resulting in viral egress from later endosomal compartments. In summary, we identify and characterize a naturally occurring TAMV strain (TAMV-FL) within ticks that is able to utilize hTfR1. The TAMV-FL significantly diverged from previous TAMV isolates, demonstrating that TAMV quasispecies exhibit striking genetic plasticity that may facilitate zoonotic spillover and rapid adaptation to new hosts. Mammarenaviruses include emergent pathogens responsible of severe disease in humans in zoonotic events. The ability to use the human Transferrin receptor 1 (hTfR1) strongly correlates with their pathogenicity in humans. We isolated a new infectious Tamiami virus strain (TAMV-FL) from host-seeking ticks, which, contrary to the previous rodent-derived reference strain, can use hTfR1 to enter human cells. Moreover, serial passaging of TAMV-FL in human immunocompetent cells selected for two substitutions in the viral envelope glycoprotein: N151K and D156N. These substitutions increase the ability to highjack hTfR1 and the binding capacity to heparan sulfate proteoglycans and cause delayed endosomal escape. Our findings provide insight into the acquisition of novel traits by currently circulating TAMV that increase its potential to trespass the inter-species barrier.
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Affiliation(s)
- Hector Moreno
- Institute of Microbiology, Lausanne University Hospital (IMUL-CHUV), Lausanne, Switzerland
- * E-mail:
| | - Alberto Rastrojo
- Department of Virology and Microbiology, Centro de Biología Molecular Severo Ochoa (CBMSO-CSIC), Madrid, Spain
- Genetic Unit, Department of Biology, Universidad Autónoma de Madrid, Madrid, Spain
| | - Rhys Pryce
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, United Kingdom
| | - Chiara Fedeli
- Institute of Microbiology, Lausanne University Hospital (IMUL-CHUV), Lausanne, Switzerland
| | - Gert Zimmer
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland
- Department of Infectious Diseases and Pathobiology (DIP), Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Thomas A. Bowden
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, United Kingdom
| | - Gisa Gerold
- TWINCORE -Center for Experimental and Clinical Infection Research, Institute for Experimental Virology, Hannover, Germany
- Department of Clinical Microbiology, Virology & Wallenberg Centre for Molecular Medicine (WCMM), Umeå University, Umeå, Sweden
- Department of Biochemistry, University of Veterinary Medicine Hannover, Hannover Germany
| | - Stefan Kunz
- Institute of Microbiology, Lausanne University Hospital (IMUL-CHUV), Lausanne, Switzerland
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14
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Schreiner VC, Bakanov N, Kattwinkel M, Könemann S, Kunz S, Vermeirssen ELM, Schäfer RB. Sampling rates for passive samplers exposed to a field-relevant peak of 42 organic pesticides. Sci Total Environ 2020; 740:140376. [PMID: 32927560 DOI: 10.1016/j.scitotenv.2020.140376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
Pesticide concentrations in agricultural streams are often characterised by a low level of baseline exposure and episodic peak concentrations associated with heavy rainfall events. Traditional sampling methods such as grab sampling, which are still largely used in governmental monitoring, typically miss peak concentrations. Passive sampling represents a cost-efficient alternative but requires the additional determination of sampling rates to calculate time-weighted average (TWA) water concentrations from the accumulated pesticide mass in the sampler. To date, sampling rates have largely been determined in experiments with constant exposure, which does not necessarily reflect field situations. Using Empore styrene-divinylbenzene (SDB) passive sampler disks mounted in metal holders, we determined sampling rates for 42 organic pesticides, of which 27 sampling rates were lacking before. The SDB disks were in an artificial channel system exposed to a field-relevant pesticide peak. We used an open-source algorithm to estimate coefficients of equations for the accumulated pesticide mass in disks and to determine exposure time-dependent sampling rates. These sampling rates ranged from 0.02 to 0.98 L d-1 and corresponded to those from previous studies determined with constant exposure. The prediction of sampling rates using compound properties was unreliable. Hence, experiments are required to determine reliable sampling rates. We discuss the use of passive sampling to estimate peak concentrations. Overall, our study provides sampling rates and computer code to determine these under peak exposure designs and suggests that passive sampling is suitable to estimate peak pesticide concentrations in field studies.
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Affiliation(s)
- Verena C Schreiner
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany.
| | - Nikita Bakanov
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany
| | - Mira Kattwinkel
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany
| | - Sarah Könemann
- Swiss Centre for Applied Ecotoxicology, 8600 Dübendorf, Switzerland
| | - Stefan Kunz
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany
| | | | - Ralf B Schäfer
- iES Landau, Institute for Environmental Sciences, University Koblenz-Landau, Fortstraße 7, 76829 Landau in der Pfalz, Germany
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Munday JC, Kunz S, Kalejaiye TD, Siderius M, Schroeder S, Paape D, Alghamdi AH, Abbasi Z, Huang SX, Donachie AM, William S, Sabra AN, Sterk GJ, Botros SS, Brown DG, Hoffman CS, Leurs R, de Koning HP. Cloning and functional complementation of ten Schistosoma mansoni phosphodiesterases expressed in the mammalian host stages. PLoS Negl Trop Dis 2020; 14:e0008447. [PMID: 32730343 PMCID: PMC7430754 DOI: 10.1371/journal.pntd.0008447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/17/2020] [Accepted: 06/02/2020] [Indexed: 01/29/2023] Open
Abstract
Only a single drug against schistosomiasis is currently available and new drug development is urgently required but very few drug targets have been validated and characterised. However, regulatory systems including cyclic nucleotide metabolism are emerging as primary candidates for drug discovery. Here, we report the cloning of ten cyclic nucleotide phosphodiesterase (PDE) genes of S. mansoni, out of a total of 11 identified in its genome. We classify these PDEs by homology to human PDEs. Male worms displayed higher expression levels for all PDEs, in mature and juvenile worms, and schistosomula. Several functional complementation approaches were used to characterise these genes. We constructed a Trypanosoma brucei cell line in which expression of a cAMP-degrading PDE complements the deletion of TbrPDEB1/B2. Inhibitor screens of these cells expressing only either SmPDE4A, TbrPDEB1 or TbrPDEB2, identified highly potent inhibitors of the S. mansoni enzyme that elevated the cellular cAMP concentration. We further expressed most of the cloned SmPDEs in two pde1Δ/pde2Δ strains of Saccharomyces cerevisiae and some also in a specialised strain of Schizosacharomyces pombe. Five PDEs, SmPDE1, SmPDE4A, SmPDE8, SmPDE9A and SmPDE11 successfully complemented the S. cerevisiae strains, and SmPDE7var also complemented to a lesser degree, in liquid culture. SmPDE4A, SmPDE8 and SmPDE11 were further assessed in S. pombe for hydrolysis of cAMP and cGMP; SmPDE11 displayed considerable preferrence for cGMP over cAMP. These results and tools enable the pursuit of a rigorous drug discovery program based on inhibitors of S. mansoni PDEs.
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Affiliation(s)
- Jane C. Munday
- Institute of Infection, Immunity and inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom
| | - Stefan Kunz
- Division of Medicinal Chemistry, Amsterdam Institute for Molecules, Medicines and Systems, Vrije Universiteit Amsterdam, The Netherlands
| | - Titilola D. Kalejaiye
- Institute of Infection, Immunity and inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom
| | - Marco Siderius
- Division of Medicinal Chemistry, Amsterdam Institute for Molecules, Medicines and Systems, Vrije Universiteit Amsterdam, The Netherlands
| | | | - Daniel Paape
- Institute of Infection, Immunity and inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom
| | - Ali H. Alghamdi
- Institute of Infection, Immunity and inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom
| | - Zainab Abbasi
- Biology Department, Boston College, Chestnut Hill, Massachusetts, United States of America
| | - Sheng Xiang Huang
- Biology Department, Boston College, Chestnut Hill, Massachusetts, United States of America
| | - Anne-Marie Donachie
- Institute of Infection, Immunity and inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom
| | - Samia William
- Department of Pharmacology, Theodor Bilharz Research Institute, Warrak El-Hadar, Imbaba, Egypt
| | - Abdel Nasser Sabra
- Department of Pharmacology, Theodor Bilharz Research Institute, Warrak El-Hadar, Imbaba, Egypt
| | - Geert Jan Sterk
- Division of Medicinal Chemistry, Amsterdam Institute for Molecules, Medicines and Systems, Vrije Universiteit Amsterdam, The Netherlands
| | - Sanaa S. Botros
- Department of Pharmacology, Theodor Bilharz Research Institute, Warrak El-Hadar, Imbaba, Egypt
| | - David G. Brown
- School of Biosciences, University of Kent, United Kingdom
| | - Charles S. Hoffman
- Biology Department, Boston College, Chestnut Hill, Massachusetts, United States of America
| | - Rob Leurs
- Division of Medicinal Chemistry, Amsterdam Institute for Molecules, Medicines and Systems, Vrije Universiteit Amsterdam, The Netherlands
| | - Harry P. de Koning
- Institute of Infection, Immunity and inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, United Kingdom
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16
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Löw K, Roulin A, Kunz S. A proopiomelanocortin-derived peptide sequence enhances plasma stability of peptide drugs. FEBS Lett 2020; 594:2840-2866. [PMID: 32506501 DOI: 10.1002/1873-3468.13855] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/11/2020] [Accepted: 05/26/2020] [Indexed: 12/26/2022]
Abstract
Bioactive peptide drugs hold promise for therapeutic application due to their high potency and selectivity but display short plasma half-life. Examination of selected naturally occurring peptide hormones derived from proteolytic cleavage of the proopiomelanocortin (POMC) precursor lead to the identification of significant plasma-stabilizing properties of a 12-amino acid serine-rich orphan sequence NSSSSGSSGAGQ in human γ3-melanocyte-stimulating hormone (MSH) that is homologous to previously discovered NSn GGH (n = 4-24) sequences in owls. Notably, transfer of this sequence to des-acetyl-α-MSH and the therapeutically relevant peptide hormones neurotensin and glucagon-like peptide-1 likewise enhance their plasma stability without affecting receptor signaling. The stabilizing effect of the sequence module is independent of plasma components, suggesting a direct effect in cis. This natural sequence module may provide a possible strategy to enhance plasma stability, complementing existing methods of chemical modification.
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Affiliation(s)
- Karin Löw
- Institute of Microbiology, University Hospital Center and University of Lausanne, Switzerland.,Department of Ecology and Evolution, University of Lausanne, Switzerland
| | - Alexandre Roulin
- Department of Ecology and Evolution, University of Lausanne, Switzerland
| | - Stefan Kunz
- Institute of Microbiology, University Hospital Center and University of Lausanne, Switzerland
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17
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Vogel N, Kunz S, Akdis C, Soyka M. The influence of corticosteroids and Azelastine on epithelial cell integrity in chronic rhinosinusitis with polyps. RHINOL 2020. [DOI: 10.4193/rhinol/20.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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18
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Bucher S, Kunz S, Deggeller M, Holzmann D, Soyka MB. Open rhinoplasty using a columellar strut: effects of the graft on nasal tip projection and rotation. Eur Arch Otorhinolaryngol 2020; 277:1371-1377. [PMID: 32062744 DOI: 10.1007/s00405-020-05836-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 01/30/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND Despite the discordance in the literature concerning the effect of columellar strut grafts on nasal tip rotation, this method is often used when an increase in nasolabial angle or nasal tip projection is desired. OBJECTIVES We aimed to elucidate the change in nasolabial angles and nasal tip projections after exclusive columellar strut graft implantations and in addition to other surgical steps. Furthermore, differences in these parameters between patients with conchal and septal columellar strut grafts were investigated. METHODS A monocentric retrospective cohort study of 173 open septorhinoplasties with columellar strut graft technique, between 2006 and 2016, was conducted. The pre- and postoperative nasal tip projection, nasolabial and nasofrontal angle and interalar distance were determined and the Goode-ratio was calculated. RESULTS In cases where uprotation was not specifically desired, neither nasolabial angles nor tip projections changed significantly, irrespective of whether a columellar strut graft was used alone or with additional surgical steps. If an uprotation through surgery was desired, a significant mean increase in nasolabial angle of 4.4° was achieved. Furthermore, conchal instead of septal columellar strut grafts showed significantly better results. CONCLUSION In our study, a columellar strut graft-without any additional surgical step-does only have an improving impact on nasal tip rotations and projections, if specifically intended to by the surgeon. In other words, if the strut graft was not chosen for an uprotational intention, it did not relevantly impact on the nasolabial angle or nasal tip projection. However, in patients where an uprotation is desired, the columellar strut graft still represents a meaningful tool. Since conchal instead of septal columellar strut grafts showed better results, we suggest using them for these patients. LEVEL OF EVIDENCE 2b.
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Affiliation(s)
- S Bucher
- University of Zurich, Zurich, Switzerland
- Department for Otorhinolaryngology Head and Neck Surgery, University Hospital Zurich, Frauenklinikstrasse 24, 8091, Zürich, Switzerland
| | - S Kunz
- University of Zurich, Zurich, Switzerland
- Department for Otorhinolaryngology Head and Neck Surgery, University Hospital Zurich, Frauenklinikstrasse 24, 8091, Zürich, Switzerland
| | - M Deggeller
- University of Zurich, Zurich, Switzerland
- Department for Otorhinolaryngology Head and Neck Surgery, University Hospital Zurich, Frauenklinikstrasse 24, 8091, Zürich, Switzerland
| | - D Holzmann
- University of Zurich, Zurich, Switzerland
- Department for Otorhinolaryngology Head and Neck Surgery, University Hospital Zurich, Frauenklinikstrasse 24, 8091, Zürich, Switzerland
| | - M B Soyka
- University of Zurich, Zurich, Switzerland.
- Department for Otorhinolaryngology Head and Neck Surgery, University Hospital Zurich, Frauenklinikstrasse 24, 8091, Zürich, Switzerland.
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19
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Löw K, Hardes K, Fedeli C, Seidah NG, Constam DB, Pasquato A, Steinmetzer T, Roulin A, Kunz S. A novel cell-based sensor detecting the activity of individual basic proprotein convertases. FEBS J 2019; 286:4597-4620. [PMID: 31276291 DOI: 10.1111/febs.14979] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 05/13/2019] [Accepted: 07/02/2019] [Indexed: 02/06/2023]
Abstract
The basic proprotein convertases (PCs) furin, PC1/3, PC2, PC5/6, PACE4, PC4, and PC7 are promising drug targets for human diseases. However, developing selective inhibitors remains challenging due to overlapping substrate recognition motifs and limited structural information. Classical drug screening approaches for basic PC inhibitors involve homogeneous biochemical assays using soluble recombinant enzymes combined with fluorogenic substrate peptides that may not accurately recapitulate the complex cellular context of the basic PC-substrate interaction. Herein we report basic PC sensor (BPCS), a novel cell-based molecular sensor that allows rapid screening of candidate inhibitors and their selectivity toward individual basic PCs within mammalian cells. BPCS consists of Gaussia luciferase linked to a sortilin-1 membrane anchor via a cleavage motif that allows efficient release of luciferase specifically if individual basic PCs are provided in the same membrane. Screening of selected candidate peptidomimetic inhibitors revealed that BPCS can readily distinguish between general and selective PC inhibitors in a high-throughput screening format. The robust and cost-effective assay format of BPCS makes it suitable to identify novel specific small-molecule inhibitors against basic PCs for therapeutic application. Its cell-based nature will allow screening for drug targets in addition to the catalytically active mature enzyme, including maturation, transport, and cellular factors that modulate the enzyme's activity. This broadened 'target range' will enhance the likelihood to identify novel small-molecule compounds that inhibit basic PCs in a direct or indirect manner and represents a conceptual advantage.
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Affiliation(s)
- Karin Löw
- Institute of Microbiology, University Hospital Center, University of Lausanne, Switzerland.,Department of Ecology and Evolution, University of Lausanne, Switzerland
| | - Kornelia Hardes
- Department of Pharmacy, Institute of Pharmaceutical Chemistry, Philipps University Marburg, Germany
| | - Chiara Fedeli
- Institute of Microbiology, University Hospital Center, University of Lausanne, Switzerland
| | - Nabil G Seidah
- Laboratory of Biochemical Neuroendocrinology, Clinical Research Institute of Montreal, (Affiliated to the University of Montreal), Canada
| | - Daniel B Constam
- Ecole Polytechnique Fédérale de Lausanne (EPFL) SV ISREC, Switzerland
| | - Antonella Pasquato
- Institute of Microbiology, University Hospital Center, University of Lausanne, Switzerland
| | - Torsten Steinmetzer
- Department of Pharmacy, Institute of Pharmaceutical Chemistry, Philipps University Marburg, Germany
| | - Alexandre Roulin
- Department of Ecology and Evolution, University of Lausanne, Switzerland
| | - Stefan Kunz
- Institute of Microbiology, University Hospital Center, University of Lausanne, Switzerland
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20
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Torriani G, Mayor J, Zimmer G, Kunz S, Rothenberger S, Engler O. Macropinocytosis contributes to hantavirus entry into human airway epithelial cells. Virology 2019; 531:57-68. [PMID: 30852272 DOI: 10.1016/j.virol.2019.02.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 02/20/2019] [Accepted: 02/20/2019] [Indexed: 01/01/2023]
Abstract
Hantaviruses are emerging rodent-borne negative-strand RNA viruses associated with severe human diseases. Zoonotic transmission occurs via aerosols of contaminated rodent excreta and cells of the human respiratory epithelium represent likely early targets. Here we investigated cellular factors involved in entry of the pathogenic Old and New World hantaviruses Hantaan virus (HTNV) and Andes virus (ANDV) into human respiratory epithelial cells. Screening of a kinase inhibitor library using a biocontained recombinant vesicular stomatitis virus pseudotype platform revealed differential requirement for host kinases for HTNV and ANDV entry and provided first hints for an involvement of macropinocytosis. Examination of a selected panel of well-defined inhibitors of endocytosis confirmed that both HTNV and ANDV enter human respiratory epithelial cells via a pathway that critically depends on sodium proton exchangers and actin, hallmarks of macropinocytosis. However, HTNV and ANDV differed in their individual requirements for regulatory factors of macropinocytosis, indicating virus-specific differences.
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Affiliation(s)
- Giulia Torriani
- Institute of Microbiology, University Hospital Center and University of Lausanne, Rue du Bugnon 48, CH-1011 Lausanne, Switzerland
| | - Jennifer Mayor
- Institute of Microbiology, University Hospital Center and University of Lausanne, Rue du Bugnon 48, CH-1011 Lausanne, Switzerland; Spiez Laboratory, CH-3700 Spiez, Switzerland
| | - Gert Zimmer
- Institute of Virology and Immunology (IVI), CH-3147 Mittelhäusern, Switzerland; Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, CH-3012 Bern, Switzerland
| | - Stefan Kunz
- Institute of Microbiology, University Hospital Center and University of Lausanne, Rue du Bugnon 48, CH-1011 Lausanne, Switzerland.
| | - Sylvia Rothenberger
- Institute of Microbiology, University Hospital Center and University of Lausanne, Rue du Bugnon 48, CH-1011 Lausanne, Switzerland; Spiez Laboratory, CH-3700 Spiez, Switzerland.
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21
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Eckhaus J, Kunz S, Wright G, Knight S. Validating In Training Assessment Profile (iTAP): A Score to Predict Postoperative Survival of Patients Undergoing Surgical Pleurodesis. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.02.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Fedeli C, Moreno H, Kunz S. Novel Insights into Cell Entry of Emerging Human Pathogenic Arenaviruses. J Mol Biol 2018; 430:1839-1852. [PMID: 29705070 DOI: 10.1016/j.jmb.2018.04.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/19/2018] [Accepted: 04/21/2018] [Indexed: 12/14/2022]
Abstract
Viral hemorrhagic fevers caused by emerging RNA viruses of the Arenavirus family are among the most devastating human diseases. Climate change, global trade, and increasing urbanization promote the emergence and re-emergence of these human pathogenic viruses. Emerging pathogenic arenaviruses are of zoonotic origin and reservoir-to-human transmission is crucial for spillover into human populations. Host cell attachment and entry are the first and most fundamental steps of every virus infection and represent major barriers for zoonotic transmission. During host cell invasion, viruses critically depend on cellular factors, including receptors, co-receptors, and regulatory proteins of endocytosis. An in-depth understanding of the complex interaction of a virus with cellular factors implicated in host cell entry is therefore crucial to predict the risk of zoonotic transmission, define the tissue tropism, and assess disease potential. Over the past years, investigation of the molecular and cellular mechanisms underlying host cell invasion of human pathogenic arenaviruses uncovered remarkable viral strategies and provided novel insights into viral adaptation and virus-host co-evolution that will be covered in the present review.
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Affiliation(s)
- Chiara Fedeli
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne CH-1011, Switzerland
| | - Héctor Moreno
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne CH-1011, Switzerland
| | - Stefan Kunz
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne CH-1011, Switzerland.
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23
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Fedeli C, Torriani G, Galan-Navarro C, Moraz ML, Moreno H, Gerold G, Kunz S. Axl Can Serve as Entry Factor for Lassa Virus Depending on the Functional Glycosylation of Dystroglycan. J Virol 2018; 92:e01613-17. [PMID: 29237830 PMCID: PMC5809728 DOI: 10.1128/jvi.01613-17] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 12/04/2017] [Indexed: 11/20/2022] Open
Abstract
Fatal infection with the highly pathogenic Lassa virus (LASV) is characterized by extensive viral dissemination, indicating broad tissue tropism. The major cellular receptor for LASV is the highly conserved extracellular matrix receptor dystroglycan (DG). Binding of LASV depends on DG's tissue-specific posttranslational modification with the unusual O-linked polysaccharide matriglycan. Interestingly, functional glycosylation of DG does not always correlate with viral tropism observed in vivo The broadly expressed phosphatidylserine (PS) receptors Axl and Tyro3 were recently identified as alternative LASV receptor candidates. However, their role in LASV entry is not entirely understood. Here, we examine LASV receptor candidates in primary human cells and found coexpression of Axl with differentially glycosylated DG. To study LASV receptor use in the context of productive arenavirus infection, we employed recombinant lymphocytic choriomeningitis virus expressing LASV glycoprotein (rLCMV-LASV GP) as a validated biosafety level 2 (BSL2) model. We confirm and extend previous work showing that Axl can contribute to LASV entry in the absence of functional DG using "apoptotic mimicry" in a way similar to that of other enveloped viruses. We further show that Axl-dependent LASV entry requires receptor activation and involves a pathway resembling macropinocytosis. Axl-mediated LASV entry is facilitated by heparan sulfate and critically depends on the late endosomal protein LAMP-1 as an intracellular entry factor. In endothelial cells expressing low levels of functional DG, both receptors are engaged by the virus and can contribute to productive entry. In sum, we characterize the role of Axl in LASV entry and provide a rationale for targeting Axl in antiviral therapy.IMPORTANCE The highly pathogenic arenavirus Lassa virus (LASV) represents a serious public health problem in Africa. Although the principal LASV receptor, dystroglycan (DG), is ubiquitously expressed, virus binding critically depends on DG's posttranslational modification, which does not always correlate with tissue tropism. The broadly expressed phosphatidylserine receptor Axl was recently identified as an alternative LASV receptor candidate, but its role in LASV entry is unclear. Here, we investigate the exact role of Axl in LASV entry as a function of DG's posttranslational modification. We found that in the absence of functional DG, Axl can mediate LASV entry via apoptotic mimicry. Productive entry requires virus-induced receptor activation, involves macropinocytosis, and critically depends on LAMP-1. In endothelial cells that express low levels of glycosylated DG, both receptors can promote LASV entry. In sum, our study defines the roles of Axl in LASV entry and provides a rationale for targeting Axl in antiviral therapy.
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Affiliation(s)
- Chiara Fedeli
- Institute of Microbiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Giulia Torriani
- Institute of Microbiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Clara Galan-Navarro
- Institute of Microbiology, Lausanne University Hospital, Lausanne, Switzerland
- Laboratory of Lymphatic and Cancer Bioengineering, Institute of Bioengineering, École Polytechnique Féderale de Lausanne (EPFL), Lausanne, Switzerland
| | | | - Hector Moreno
- Institute of Microbiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Gisa Gerold
- TWINCORE, Center for Experimental and Clinical Infection Research, Institute for Experimental Virology, Hannover, Germany
| | - Stefan Kunz
- Institute of Microbiology, Lausanne University Hospital, Lausanne, Switzerland
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Abstract
Lujo virus (LUJV) is an arenavirus that emerged in 2008 associated with a cluster of human cases of severe hemorrhagic fever. In this issue of Cell Host & Microbe, Raaben et al. (2017) identify neuropilin (NRP)-2 as cell surface receptor and the tetraspannin protein CD63 as intracellular entry factor for LUJV.
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Affiliation(s)
- Stefan Kunz
- Institute of Microbiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Juan Carlos de la Torre
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, USA.
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25
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Abstract
Host cell entry is the first and most fundamental step of every virus infection and represents a major barrier for zoonotic transmission and viral emergence. Targeting viral entry appears further as a promising strategy for therapeutic intervention. Several cellular receptors have been identified for Lassa virus, including dystroglycan, TAM receptor tyrosine kinases, and C-type lectins. Upon receptor binding, LASV enters the host cell via a largely unknown clathrin- and dynamin-independent endocytotic pathway that delivers the virus to late endosomes, where fusion occurs after engagement of a second, intracellular receptor, the late endosomal/lysosomal resident protein LAMP1. Here, we describe a series of experimental approaches to investigate LASV cell entry and to test candidate inhibitors for their action at this early and decisive step of infection.
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Affiliation(s)
- Antonella Pasquato
- Institute of Microbiology, University Hospital Center, University of Lausanne, Rue du Bugnon 48, CH-1011, Lausanne, Switzerland
| | - Antonio Herrador Fernandez
- Institute of Microbiology, University Hospital Center, University of Lausanne, Rue du Bugnon 48, CH-1011, Lausanne, Switzerland
| | - Stefan Kunz
- Institute of Microbiology, University Hospital Center, University of Lausanne, Rue du Bugnon 48, CH-1011, Lausanne, Switzerland.
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26
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Galan-Navarro C, Rincon-Restrepo M, Zimmer G, Ollmann Saphire E, Hubbell JA, Hirosue S, Swartz MA, Kunz S. Oxidation-sensitive polymersomes as vaccine nanocarriers enhance humoral responses against Lassa virus envelope glycoprotein. Virology 2017; 512:161-171. [PMID: 28963882 DOI: 10.1016/j.virol.2017.09.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/12/2017] [Accepted: 09/14/2017] [Indexed: 12/01/2022]
Abstract
Lassa virus (LASV) causes severe hemorrhagic fever with high mortality, yet no vaccine currently exists. Antibodies targeting viral attachment proteins are crucial for protection against many viral infections. However, the envelope glycoprotein (GP)-1 of LASV elicits weak antibody responses due to extensive glycan shielding. Here, we explored a novel vaccine strategy to enhance humoral immunity against LASV GP1. Using structural information, we designed a recombinant GP1 immunogen, and then encapsulated it into oxidation-sensitive polymersomes (PS) as nanocarriers that promote intracellular MHCII loading. Mice immunized with adjuvanted PS (LASV GP1) showed superior humoral responses than free LASV GP1, including antibodies with higher binding affinity to virion GP1, increased levels of polyfunctional anti-viral CD4 T cells, and IgG-secreting B cells. PS (LASV GP1) elicited a more diverse epitope repertoire of anti-viral IgG. Together, these data demonstrate the potential of our nanocarrier vaccine platform for generating virus-specific antibodies against weakly immunogenic viral antigens.
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Affiliation(s)
- Clara Galan-Navarro
- Institute of Microbiology, Lausanne University Hospital. Lausanne, Switzerland; Laboratory of Lymphatic and Cancer Bioengineering, Institute of Bioengineering, École Polytechnique Féderal de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Marcela Rincon-Restrepo
- Laboratory of Lymphatic and Cancer Bioengineering, Institute of Bioengineering, École Polytechnique Féderal de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Gert Zimmer
- Division of Virology, Institute of Virology and Immunology, 3147 Mittelhäusern, Switzerland
| | - Erica Ollmann Saphire
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, United States; Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, United States
| | - Jeffrey A Hubbell
- Laboratory of Lymphatic and Cancer Bioengineering, Institute of Bioengineering, École Polytechnique Féderal de Lausanne (EPFL), 1015 Lausanne, Switzerland; Institute for Molecular Engineering and Ben May Department of Cancer Research, University of Chicago, IL, United States
| | - Sachiko Hirosue
- Laboratory of Lymphatic and Cancer Bioengineering, Institute of Bioengineering, École Polytechnique Féderal de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Melody A Swartz
- Laboratory of Lymphatic and Cancer Bioengineering, Institute of Bioengineering, École Polytechnique Féderal de Lausanne (EPFL), 1015 Lausanne, Switzerland; Institute for Molecular Engineering and Ben May Department of Cancer Research, University of Chicago, IL, United States.
| | - Stefan Kunz
- Institute of Microbiology, Lausanne University Hospital. Lausanne, Switzerland.
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Shafique U, Schulze S, Slawik C, Kunz S, Paschke A, Schüürmann G. Gas chromatographic determination of perfluorocarboxylic acids in aqueous samples – A tutorial review. Anal Chim Acta 2017; 949:8-22. [DOI: 10.1016/j.aca.2016.10.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 10/18/2016] [Accepted: 10/19/2016] [Indexed: 11/25/2022]
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28
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Rafei-Shamsabadi D, Kunz S, Martin S, Klose C, Tanriver Y, Arnold S, Diefenbach A, Halim T, McKenzie A, Jakob T, van de Poel S, Ebert K. 395 Lack of type 2 innate lymphoid cells promotes a type I driven enhanced immune response in TNCB contact hypersensitivity. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Holb IJ, Kunz S. Integrated Control of Apple Scab and Powdery Mildew in an Organic Apple Orchard by Combining Potassium Carbonates with Wettable Sulfur, Pruning, and Cultivar Susceptibility. Plant Dis 2016; 100:1894-1905. [PMID: 30682978 DOI: 10.1094/pdis-12-15-1416-re] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In a 4-year study in a whole-field sanitized organic apple orchard, the effectiveness of nine fungicide treatments, including potassium mono- and bicarbonate and their combinations with wettable sulfur, were evaluated for scab and powdery mildew control on two cultivars with different susceptibility to scab and powdery mildew, under two pruning treatments. The whole-field sanitation practice was performed by removal of infected fallen leaves. Treatment effects on phytotoxicity and yield were also determined. Pruning significantly reduced leaf scab incidence but only on the more scab-susceptible Idared. Pruning significantly reduced mildew incidence in most years and on both cultivars but the more mildew-susceptible Jonathan showed significantly higher mildew incidence than Idared. Among products approved for organic production, the best scab control was achieved with a potassium mono- or bicarbonate treatment combined with wettable sulfur, except for Jonathan in 2011 on leaf and in 2014 on both leaf and fruit, and for Idared in 2013 on fruit. The best mildew control was also achieved with potassium mono- or bicarbonate treatments combined with wettable sulfur, with exceptions on shoots of Idared in 2011 and 2013 and on fruit of Idared in 2012. Leaf phytotoxicity was significantly higher in all potassium carbonate treatments compared with untreated plots, except for Idared in 2012, while fruit russet in these treatments did not differ significantly from the untreated plots. However, phytotoxicity values of all carbonate treatments were significantly lower than the lime sulfur treatment in most years on both cultivars. Yield of the potassium mono- or bicarbonate treatments combined with wettable sulfur was significantly higher than the untreated plots in the pruned treatments for both cultivars in all years. The integrated control approach designed for organic disease management against the two pathogens is discussed.
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Affiliation(s)
- Imre J Holb
- University of Debrecen, H-4015 Debrecen, Hungary, and Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, H-1525 Budapest, Hungary
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Troalen L, Röhrs S, Calligaro T, Pacheco C, Kunz S, del Hoyo-Meléndez J, Hulme A. A multi-analytical approach towards the investigation of Subarctic Athapaskan colouring of quillwork and its sensitivity to photo-degradation. Microchem J 2016. [DOI: 10.1016/j.microc.2015.11.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
INTRODUCTION Arenaviruses are enveloped negative stranded viruses endemic in Africa, Europe and the Americas. Several arenaviruses cause severe viral hemorrhagic fever with high mortality in humans and pose serious public health threats. So far, there are no FDA-approved vaccines and therapeutic options are restricted to the off-label use of ribavirin. The major human pathogenic arenaviruses are classified as Category A agents and require biosafety level (BSL)-4 containment. AREAS COVERED Herein, the authors cover the recent progress in the development of BSL2 surrogate systems that recapitulate the entire or specific steps of the arenavirus life cycle and are serving as powerful platforms for drug discovery. Furthermore, they highlight the identification of selected novel drugs that target individual steps of arenavirus multiplication describing their discovery, their targets, and mode of action. EXPERT OPINION The lack of effective drugs against arenaviruses is an unmatched challenge in current medical virology. Novel technologies have provided important insights into the basic biology of arenaviruses and the mechanisms underlying virus-host cell interaction. Significant progress of our understanding of how the virus invades the host cell paved the way to develop powerful novel screening platforms. Recent efforts have provided a range of promising drug candidates currently under evaluation for therapeutic intervention in vivo.
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Affiliation(s)
- Antonella Pasquato
- a Institute of Microbiology , University Hospital Center and University of Lausanne , Lausanne , Switzerland
| | - Stefan Kunz
- a Institute of Microbiology , University Hospital Center and University of Lausanne , Lausanne , Switzerland
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da Palma JR, Cendron L, Seidah NG, Pasquato A, Kunz S. Mechanism of Folding and Activation of Subtilisin Kexin Isozyme-1 (SKI-1)/Site-1 Protease (S1P). J Biol Chem 2015; 291:2055-66. [PMID: 26645686 DOI: 10.1074/jbc.m115.677757] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Indexed: 11/06/2022] Open
Abstract
The proprotein convertase subtilisin kexin isozyme-1 (SKI-1)/site-1 protease (S1P) is implicated in lipid homeostasis, the unfolded protein response, and lysosome biogenesis. The protease is further hijacked by highly pathogenic emerging viruses for the processing of their envelope glycoproteins. Zymogen activation of SKI-1/S1P requires removal of an N-terminal prodomain, by a multistep process, generating the mature enzyme. Here, we uncover a modular structure of the human SKI-1/S1P prodomain and define its function in folding and activation. We provide evidence that the N-terminal AB fragment of the prodomain represents an autonomous structural and functional unit that is necessary and sufficient for folding and partial activation. In contrast, the C-terminal BC fragment lacks a defined structure but is crucial for autoprocessing and full catalytic activity. Phylogenetic analysis revealed that the sequence of the AB domain is highly conserved, whereas the BC fragment shows considerable variation and seems even absent in some species. Notably, SKI-1/S1P of arthropods, like the fruit fly Drosophila melanogaster, contains a shorter prodomain comprised of full-length AB and truncated BC regions. Swapping the prodomain fragments between fly and human resulted in a fully mature and active SKI-1/S1P chimera. Our study suggests that primordial SKI-1/S1P likely contained a simpler prodomain consisting of the highly conserved AB fragment that represents an independent folding unit. The BC region appears as a later evolutionary acquisition, possibly allowing more subtle fine-tuning of the maturation process.
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Affiliation(s)
- Joel Ramos da Palma
- From the Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne CH-1011, Switzerland
| | - Laura Cendron
- the Department of Biology, University of Padua, 35122 Padua, Italy, and
| | - Nabil Georges Seidah
- the Laboratory of Biochemical Neuroendocrinology, Clinical Research Institute of Montreal, University of Montreal, Montreal, Quebec H2W 1R7, Canada
| | - Antonella Pasquato
- From the Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne CH-1011, Switzerland,
| | - Stefan Kunz
- From the Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne CH-1011, Switzerland,
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Abstract
We report a case of acquired lymphocytic choriomeningitis virus (LCMV) infection due to an accidental percutaneous inoculation of LCMV at work. The injured worker developed a flu-like syndrome, followed by pericarditis and meningoencephalitis. Seroconversion was confirmed by ELISA. The patient made a complete recovery. We review measures undertaken to prevent a similar event and propose a follow-up protocol in the event of accidental LCMV exposure.
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Affiliation(s)
- O Aebischer
- Department of Internal Medicine, CHUV, 1011 Lausanne, Switzerland,
| | - P Meylan
- Department of Infectious Disease, CHUV, 1011 Lausanne, Switzerland
| | - S Kunz
- Department of Microbiology, CHUV, 1011 Lausanne, Switzerland
| | - C Lazor-Blanchet
- Department of Preventive and Occupational Medicine, CHUV, 1011 Lausanne, Switzerland
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von Haehling S, Wolk K, Höflich C, Kunz S, Grünberg BH, Döcke WD, Reineke U, Asadullah K, Sterry W, Volk HD, Sabat R. Interleukin-10 receptor-1 expression in monocyte-derived antigen-presenting cell populations: dendritic cells partially escape from IL-10's inhibitory mechanisms. Genes Immun 2015. [PMID: 26201975 DOI: 10.1038/gene.2015.9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pythoud C, Rothenberger S, Martínez-Sobrido L, de la Torre JC, Kunz S. Lymphocytic Choriomeningitis Virus Differentially Affects the Virus-Induced Type I Interferon Response and Mitochondrial Apoptosis Mediated by RIG-I/MAVS. J Virol 2015; 89:6240-50. [PMID: 25833049 PMCID: PMC4474305 DOI: 10.1128/jvi.00610-15] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 03/26/2015] [Indexed: 01/03/2023] Open
Abstract
UNLABELLED Arenaviruses are important emerging human pathogens maintained by noncytolytic persistent infection in their rodent reservoir hosts. Despite high levels of viral replication, persistently infected carrier hosts show only mildly elevated levels of type I interferon (IFN-I). Accordingly, the arenavirus nucleoprotein (NP) has been identified as a potent IFN-I antagonist capable of blocking activation of interferon regulatory factor 3 (IRF3) via the retinoic acid inducible gene (RIG)-I/mitochondrial antiviral signaling (MAVS) pathway. Another important mechanism of host innate antiviral defense is represented by virus-induced mitochondrial apoptosis via RIG-I/MAVS and IRF3. In the present study, we investigated the ability of the prototypic Old World arenavirus lymphocytic choriomeningitis virus (LCMV) to interfere with RIG-I/MAVS-dependent apoptosis. We found that LCMV does not induce apoptosis at any time during infection. While LCMV efficiently blocked induction of IFN-I via RIG-I/MAVS in response to superinfection with cytopathic RNA viruses, virus-induced mitochondrial apoptosis remained fully active in LCMV-infected cells. Notably, in LCMV-infected cells, RIG-I was dispensable for virus-induced apoptosis via MAVS. Our study reveals that LCMV infection efficiently suppresses induction of IFN-I but does not interfere with the cell's ability to undergo virus-induced mitochondrial apoptosis as a strategy of innate antiviral defense. The RIG-I independence of mitochondrial apoptosis in LCMV-infected cells provides the first evidence that arenaviruses can reshape apoptotic signaling according to their needs. IMPORTANCE Arenaviruses are important emerging human pathogens that are maintained in their rodent hosts by persistent infection. Persistent virus is able to subvert the cellular interferon response, a powerful branch of the innate antiviral defense. Here, we investigated the ability of the prototypic arenavirus lymphocytic choriomeningitis virus (LCMV) to interfere with the induction of programmed cell death, or apoptosis, in response to superinfection with cytopathic RNA viruses. Upon viral challenge, persistent LCMV efficiently blocked induction of interferons, whereas virus-induced apoptosis remained fully active in LCMV-infected cells. Our studies reveal that the persistent virus is able to reshape innate apoptotic signaling in order to prevent interferon production while maintaining programmed cell death as a strategy for innate defense. The differential effect of persistent virus on the interferon response versus its effect on apoptosis appears as a subtle strategy to guarantee sufficiently high viral loads for efficient transmission while maintaining apoptosis as a mechanism of defense.
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Affiliation(s)
- Christelle Pythoud
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Sylvia Rothenberger
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Luis Martínez-Sobrido
- Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA
| | - Juan Carlos de la Torre
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, USA
| | - Stefan Kunz
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
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Aguilar M, Aisa D, Alpat B, Alvino A, Ambrosi G, Andeen K, Arruda L, Attig N, Azzarello P, Bachlechner A, Barao F, Barrau A, Barrin L, Bartoloni A, Basara L, Battarbee M, Battiston R, Bazo J, Becker U, Behlmann M, Beischer B, Berdugo J, Bertucci B, Bigongiari G, Bindi V, Bizzaglia S, Bizzarri M, Boella G, de Boer W, Bollweg K, Bonnivard V, Borgia B, Borsini S, Boschini MJ, Bourquin M, Burger J, Cadoux F, Cai XD, Capell M, Caroff S, Casaus J, Cascioli V, Castellini G, Cernuda I, Cervelli F, Chae MJ, Chang YH, Chen AI, Chen H, Cheng GM, Chen HS, Cheng L, Chikanian A, Chou HY, Choumilov E, Choutko V, Chung CH, Clark C, Clavero R, Coignet G, Consolandi C, Contin A, Corti C, Coste B, Crispoltoni M, Cui Z, Dai M, Delgado C, Della Torre S, Demirköz MB, Derome L, Di Falco S, Di Masso L, Dimiccoli F, Díaz C, von Doetinchem P, Donnini F, Du WJ, Duranti M, D'Urso D, Eline A, Eppling FJ, Eronen T, Fan YY, Farnesini L, Feng J, Fiandrini E, Fiasson A, Finch E, Fisher P, Galaktionov Y, Gallucci G, García B, García-López R, Gargiulo C, Gast H, Gebauer I, Gervasi M, Ghelfi A, Gillard W, Giovacchini F, Goglov P, Gong J, Goy C, Grabski V, Grandi D, Graziani M, Guandalini C, Guerri I, Guo KH, Habiby M, Haino S, Han KC, He ZH, Heil M, Hoffman J, Hsieh TH, Huang ZC, Huh C, Incagli M, Ionica M, Jang WY, Jinchi H, Kanishev K, Kim GN, Kim KS, Kirn T, Kossakowski R, Kounina O, Kounine A, Koutsenko V, Krafczyk MS, Kunz S, La Vacca G, Laudi E, Laurenti G, Lazzizzera I, Lebedev A, Lee HT, Lee SC, Leluc C, Li HL, Li JQ, Li Q, Li Q, Li TX, Li W, Li Y, Li ZH, Li ZY, Lim S, Lin CH, Lipari P, Lippert T, Liu D, Liu H, Lomtadze T, Lu MJ, Lu YS, Luebelsmeyer K, Luo F, Luo JZ, Lv SS, Majka R, Malinin A, Mañá C, Marín J, Martin T, Martínez G, Masi N, Maurin D, Menchaca-Rocha A, Meng Q, Mo DC, Morescalchi L, Mott P, Müller M, Ni JQ, Nikonov N, Nozzoli F, Nunes P, Obermeier A, Oliva A, Orcinha M, Palmonari F, Palomares C, Paniccia M, Papi A, Pauluzzi M, Pedreschi E, Pensotti S, Pereira R, Pilo F, Piluso A, Pizzolotto C, Plyaskin V, Pohl M, Poireau V, Postaci E, Putze A, Quadrani L, Qi XM, Räihä T, Rancoita PG, Rapin D, Ricol JS, Rodríguez I, Rosier-Lees S, Rozhkov A, Rozza D, Sagdeev R, Sandweiss J, Saouter P, Sbarra C, Schael S, Schmidt SM, Schuckardt D, Schulz von Dratzig A, Schwering G, Scolieri G, Seo ES, Shan BS, Shan YH, Shi JY, Shi XY, Shi YM, Siedenburg T, Son D, Spada F, Spinella F, Sun W, Sun WH, Tacconi M, Tang CP, Tang XW, Tang ZC, Tao L, Tescaro D, Ting SCC, Ting SM, Tomassetti N, Torsti J, Türkoğlu C, Urban T, Vagelli V, Valente E, Vannini C, Valtonen E, Vaurynovich S, Vecchi M, Velasco M, Vialle JP, Wang LQ, Wang QL, Wang RS, Wang X, Wang ZX, Weng ZL, Whitman K, Wienkenhöver J, Wu H, Xia X, Xie M, Xie S, Xiong RQ, Xin GM, Xu NS, Xu W, Yan Q, Yang J, Yang M, Ye QH, Yi H, Yu YJ, Yu ZQ, Zeissler S, Zhang JH, Zhang MT, Zhang XB, Zhang Z, Zheng ZM, Zhuang HL, Zhukov V, Zichichi A, Zimmermann N, Zuccon P, Zurbach C. Precision Measurement of the (e^{+}+e^{-}) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station. Phys Rev Lett 2014; 113:221102. [PMID: 25494065 DOI: 10.1103/physrevlett.113.221102] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Indexed: 06/04/2023]
Abstract
We present a measurement of the cosmic ray (e^{+}+e^{-}) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e^{+}+e^{-}) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux. The flux is smooth and reveals new and distinct information. Above 30.2 GeV, the flux can be described by a single power law with a spectral index γ=-3.170±0.008(stat+syst)±0.008(energy scale).
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Affiliation(s)
- M Aguilar
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - D Aisa
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - B Alpat
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - A Alvino
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - G Ambrosi
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - K Andeen
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - L Arruda
- Laboratório de Instrumentação e Física Experimental de Partículas, (LIP), P-1000 Lisboa, Portugal
| | - N Attig
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany
| | - P Azzarello
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland and INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - A Bachlechner
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Barao
- Laboratório de Instrumentação e Física Experimental de Partículas, (LIP), P-1000 Lisboa, Portugal
| | - A Barrau
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - L Barrin
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland
| | | | - L Basara
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France and INFN TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - M Battarbee
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - R Battiston
- INFN TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - J Bazo
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - U Becker
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Behlmann
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - B Beischer
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - J Berdugo
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - B Bertucci
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - G Bigongiari
- INFN Sezione di Pisa, I-56100 Pisa, Italy and Università di Pisa, I-56100 Pisa, Italy
| | - V Bindi
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - S Bizzaglia
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - M Bizzarri
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - G Boella
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - W de Boer
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - K Bollweg
- National Aeronautics and Space Administration Johnson Space Center (JSC), and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - V Bonnivard
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - B Borgia
- INFN Sezione di Roma 1, I-00185 Roma, Italy and Università di Roma La Sapienza, I-00185 Roma, Italy
| | - S Borsini
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - M J Boschini
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - M Bourquin
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - J Burger
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - F Cadoux
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - X D Cai
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Capell
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - S Caroff
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - J Casaus
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - V Cascioli
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | | | - I Cernuda
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - F Cervelli
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - M J Chae
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - Y H Chang
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan
| | - A I Chen
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - H Chen
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - G M Cheng
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - H S Chen
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - L Cheng
- Shandong University (SDU), Jinan, Shandong 250100, China
| | - A Chikanian
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - H Y Chou
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan
| | - E Choumilov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - V Choutko
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - C H Chung
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - C Clark
- National Aeronautics and Space Administration Johnson Space Center (JSC), and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - R Clavero
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain
| | - G Coignet
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - C Consolandi
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - A Contin
- INFN Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - C Corti
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - B Coste
- INFN TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - M Crispoltoni
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - Z Cui
- Shandong University (SDU), Jinan, Shandong 250100, China
| | - M Dai
- Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, Beijing 100080, China
| | - C Delgado
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - S Della Torre
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - M B Demirköz
- Department of Physics, Middle East Technical University (METU), 06800 Ankara, Turkey
| | - L Derome
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - S Di Falco
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - L Di Masso
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - F Dimiccoli
- INFN TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - C Díaz
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - P von Doetinchem
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - F Donnini
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - W J Du
- Shandong University (SDU), Jinan, Shandong 250100, China
| | - M Duranti
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - D D'Urso
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - A Eline
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - F J Eppling
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - T Eronen
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Y Y Fan
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - L Farnesini
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - J Feng
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - E Fiandrini
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - A Fiasson
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - E Finch
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - P Fisher
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Y Galaktionov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - G Gallucci
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland and INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - B García
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - R García-López
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain
| | - C Gargiulo
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland
| | - H Gast
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - I Gebauer
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - M Gervasi
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - A Ghelfi
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - W Gillard
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan
| | - F Giovacchini
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - P Goglov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - J Gong
- Southeast University (SEU), Nanjing 210096, China
| | - C Goy
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - V Grabski
- Instituto de Física, Universidad Nacional Autónoma de México (UNAM), México D.F. 01000, Mexico
| | - D Grandi
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - M Graziani
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland and INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - C Guandalini
- INFN Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - I Guerri
- INFN Sezione di Pisa, I-56100 Pisa, Italy and Università di Pisa, I-56100 Pisa, Italy
| | - K H Guo
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - M Habiby
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - S Haino
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan and Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - K C Han
- National Chung-Shan Institute of Science and Technology (NCSIST), Longtan, Tao Yuan 325, Taiwan
| | - Z H He
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - M Heil
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - J Hoffman
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan
| | - T H Hsieh
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Z C Huang
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - C Huh
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - M Incagli
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - M Ionica
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - W Y Jang
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - H Jinchi
- National Chung-Shan Institute of Science and Technology (NCSIST), Longtan, Tao Yuan 325, Taiwan
| | - K Kanishev
- INFN TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - G N Kim
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - K S Kim
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - Th Kirn
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - R Kossakowski
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - O Kounina
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - A Kounine
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - V Koutsenko
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M S Krafczyk
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - S Kunz
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - G La Vacca
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland and INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - E Laudi
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - G Laurenti
- INFN Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - I Lazzizzera
- INFN TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - A Lebedev
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - H T Lee
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - S C Lee
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - C Leluc
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - H L Li
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - J Q Li
- Southeast University (SEU), Nanjing 210096, China
| | - Q Li
- Southeast University (SEU), Nanjing 210096, China
| | - Q Li
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - T X Li
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - W Li
- Beihang University (BUAA), Beijing 100191, China
| | - Y Li
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - Z H Li
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - Z Y Li
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - S Lim
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - C H Lin
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - P Lipari
- INFN Sezione di Roma 1, I-00185 Roma, Italy
| | - T Lippert
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany
| | - D Liu
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - H Liu
- Southeast University (SEU), Nanjing 210096, China
| | - T Lomtadze
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - M J Lu
- INFN TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - Y S Lu
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - K Luebelsmeyer
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Luo
- Shandong University (SDU), Jinan, Shandong 250100, China
| | - J Z Luo
- Southeast University (SEU), Nanjing 210096, China
| | - S S Lv
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - R Majka
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - A Malinin
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - C Mañá
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - J Marín
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - T Martin
- National Aeronautics and Space Administration Johnson Space Center (JSC), and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - G Martínez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - N Masi
- INFN Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - D Maurin
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - A Menchaca-Rocha
- Instituto de Física, Universidad Nacional Autónoma de México (UNAM), México D.F. 01000, Mexico
| | - Q Meng
- Southeast University (SEU), Nanjing 210096, China
| | - D C Mo
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | | | - P Mott
- National Aeronautics and Space Administration Johnson Space Center (JSC), and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - M Müller
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - J Q Ni
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - N Nikonov
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - F Nozzoli
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - P Nunes
- Laboratório de Instrumentação e Física Experimental de Partículas, (LIP), P-1000 Lisboa, Portugal
| | - A Obermeier
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Oliva
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - M Orcinha
- Laboratório de Instrumentação e Física Experimental de Partículas, (LIP), P-1000 Lisboa, Portugal
| | - F Palmonari
- INFN Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - C Palomares
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - M Paniccia
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - A Papi
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - M Pauluzzi
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | | | - S Pensotti
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - R Pereira
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA and Laboratório de Instrumentação e Física Experimental de Partículas, (LIP), P-1000 Lisboa, Portugal
| | - F Pilo
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - A Piluso
- INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | | | - V Plyaskin
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Pohl
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - V Poireau
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - E Postaci
- Department of Physics, Middle East Technical University (METU), 06800 Ankara, Turkey
| | - A Putze
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - L Quadrani
- INFN Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - X M Qi
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - T Räihä
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - P G Rancoita
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - D Rapin
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - J S Ricol
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - I Rodríguez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - S Rosier-Lees
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - A Rozhkov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - D Rozza
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - R Sagdeev
- East-West Center for Space Science, University of Maryland, College Park, Maryland 20742, USA
| | - J Sandweiss
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - P Saouter
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - C Sbarra
- INFN Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - S Schael
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - S M Schmidt
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany
| | - D Schuckardt
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - A Schulz von Dratzig
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - G Schwering
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - G Scolieri
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - E S Seo
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - B S Shan
- Beihang University (BUAA), Beijing 100191, China
| | - Y H Shan
- Beihang University (BUAA), Beijing 100191, China
| | - J Y Shi
- Southeast University (SEU), Nanjing 210096, China
| | - X Y Shi
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Y M Shi
- Shanghai Jiaotong University (SJTU), Shanghai 200030, China
| | - T Siedenburg
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - D Son
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - F Spada
- INFN Sezione di Roma 1, I-00185 Roma, Italy
| | - F Spinella
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - W Sun
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - W H Sun
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Tacconi
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - C P Tang
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - X W Tang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - Z C Tang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - L Tao
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - D Tescaro
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain
| | - Samuel C C Ting
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - S M Ting
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - N Tomassetti
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - J Torsti
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - C Türkoğlu
- Department of Physics, Middle East Technical University (METU), 06800 Ankara, Turkey
| | - T Urban
- National Aeronautics and Space Administration Johnson Space Center (JSC), and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - V Vagelli
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - E Valente
- INFN Sezione di Roma 1, I-00185 Roma, Italy and Università di Roma La Sapienza, I-00185 Roma, Italy
| | - C Vannini
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - E Valtonen
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - S Vaurynovich
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Vecchi
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - M Velasco
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - J P Vialle
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - L Q Wang
- Shandong University (SDU), Jinan, Shandong 250100, China
| | - Q L Wang
- Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, Beijing 100080, China
| | - R S Wang
- Shanghai Jiaotong University (SJTU), Shanghai 200030, China
| | - X Wang
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Z X Wang
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - Z L Weng
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - K Whitman
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - J Wienkenhöver
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - H Wu
- Southeast University (SEU), Nanjing 210096, China
| | - X Xia
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - M Xie
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - S Xie
- Shanghai Jiaotong University (SJTU), Shanghai 200030, China
| | - R Q Xiong
- Southeast University (SEU), Nanjing 210096, China
| | - G M Xin
- Shandong University (SDU), Jinan, Shandong 250100, China
| | - N S Xu
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - W Xu
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China and Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Q Yan
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - J Yang
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - M Yang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - Q H Ye
- Shanghai Jiaotong University (SJTU), Shanghai 200030, China
| | - H Yi
- Southeast University (SEU), Nanjing 210096, China
| | - Y J Yu
- Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, Beijing 100080, China
| | - Z Q Yu
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - S Zeissler
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - J H Zhang
- Southeast University (SEU), Nanjing 210096, China
| | - M T Zhang
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - X B Zhang
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - Z Zhang
- Sun Yat-Sen University (SYSU), Guangzhou 510275, China
| | - Z M Zheng
- Beihang University (BUAA), Beijing 100191, China
| | - H L Zhuang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100039, China
| | - V Zhukov
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Zichichi
- INFN Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - N Zimmermann
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - P Zuccon
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - C Zurbach
- Laboratoire Univers et Particules de Montpellier (LUPM), IN2P3/CNRS and Université de Montpellier II, F-34095 Montpellier, France
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da Palma JR, Burri DJ, Oppliger J, Salamina M, Cendron L, de Laureto PP, Seidah NG, Kunz S, Pasquato A. Zymogen activation and subcellular activity of subtilisin kexin isozyme 1/site 1 protease. J Biol Chem 2014; 289:35743-56. [PMID: 25378398 DOI: 10.1074/jbc.m114.588525] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The proprotein convertase subtilisin kexin isozyme 1 (SKI-1)/site 1 protease (S1P) plays crucial roles in cellular homeostatic functions and is hijacked by pathogenic viruses for the processing of their envelope glycoproteins. Zymogen activation of SKI-1/S1P involves sequential autocatalytic processing of its N-terminal prodomain at sites B'/B followed by the herein newly identified C'/C sites. We found that SKI-1/S1P autoprocessing results in intermediates whose catalytic domain remains associated with prodomain fragments of different lengths. In contrast to other zymogen proprotein convertases, all incompletely matured intermediates of SKI-1/S1P showed full catalytic activity toward cellular substrates, whereas optimal cleavage of viral glycoproteins depended on B'/B processing. Incompletely matured forms of SKI-1/S1P further process cellular and viral substrates in distinct subcellular compartments. Using a cell-based sensor for SKI-1/S1P activity, we found that 9 amino acid residues at the cleavage site (P1-P8) and P1' are necessary and sufficient to define the subcellular location of processing and to determine to what extent processing of a substrate depends on SKI-1/S1P maturation. In sum, our study reveals novel and unexpected features of SKI-1/S1P zymogen activation and subcellular specificity of activity toward cellular and pathogen-derived substrates.
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Affiliation(s)
- Joel Ramos da Palma
- From the Institute of Microbiology, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Dominique Julien Burri
- From the Institute of Microbiology, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Joël Oppliger
- From the Institute of Microbiology, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | | | | | - Patrizia Polverino de Laureto
- the Department of Pharmaceutical Sciences, Centro Ricerche Interdipartimentale Biotecnologie Innovative, University of Padua, 35121 Padua, Italy, and
| | - Nabil Georges Seidah
- the Laboratory of Biochemical Neuroendocrinology, Clinical Research Institute of Montreal, University of Montreal, Montreal, Quebec H2W 1R7, Canada
| | - Stefan Kunz
- From the Institute of Microbiology, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland,
| | - Antonella Pasquato
- From the Institute of Microbiology, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland,
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Aguilar M, Aisa D, Alvino A, Ambrosi G, Andeen K, Arruda L, Attig N, Azzarello P, Bachlechner A, Barao F, Barrau A, Barrin L, Bartoloni A, Basara L, Battarbee M, Battiston R, Bazo J, Becker U, Behlmann M, Beischer B, Berdugo J, Bertucci B, Bigongiari G, Bindi V, Bizzaglia S, Bizzarri M, Boella G, de Boer W, Bollweg K, Bonnivard V, Borgia B, Borsini S, Boschini MJ, Bourquin M, Burger J, Cadoux F, Cai XD, Capell M, Caroff S, Casaus J, Cascioli V, Castellini G, Cernuda I, Cervelli F, Chae MJ, Chang YH, Chen AI, Chen H, Cheng GM, Chen HS, Cheng L, Chikanian A, Chou HY, Choumilov E, Choutko V, Chung CH, Clark C, Clavero R, Coignet G, Consolandi C, Contin A, Corti C, Coste B, Cui Z, Dai M, Delgado C, Della Torre S, Demirköz MB, Derome L, Di Falco S, Di Masso L, Dimiccoli F, Díaz C, von Doetinchem P, Du WJ, Duranti M, D'Urso D, Eline A, Eppling FJ, Eronen T, Fan YY, Farnesini L, Feng J, Fiandrini E, Fiasson A, Finch E, Fisher P, Galaktionov Y, Gallucci G, García B, García-López R, Gast H, Gebauer I, Gervasi M, Ghelfi A, Gillard W, Giovacchini F, Goglov P, Gong J, Goy C, Grabski V, Grandi D, Graziani M, Guandalini C, Guerri I, Guo KH, Habiby M, Haino S, Han KC, He ZH, Heil M, Hoffman J, Hsieh TH, Huang ZC, Huh C, Incagli M, Ionica M, Jang WY, Jinchi H, Kanishev K, Kim GN, Kim KS, Kirn T, Kossakowski R, Kounina O, Kounine A, Koutsenko V, Krafczyk MS, Kunz S, La Vacca G, Laudi E, Laurenti G, Lazzizzera I, Lebedev A, Lee HT, Lee SC, Leluc C, Li HL, Li JQ, Li Q, Li Q, Li TX, Li W, Li Y, Li ZH, Li ZY, Lim S, Lin CH, Lipari P, Lippert T, Liu D, Liu H, Lomtadze T, Lu MJ, Lu YS, Luebelsmeyer K, Luo F, Luo JZ, Lv SS, Majka R, Malinin A, Mañá C, Marín J, Martin T, Martínez G, Masi N, Maurin D, Menchaca-Rocha A, Meng Q, Mo DC, Morescalchi L, Mott P, Müller M, Ni JQ, Nikonov N, Nozzoli F, Nunes P, Obermeier A, Oliva A, Orcinha M, Palmonari F, Palomares C, Paniccia M, Papi A, Pedreschi E, Pensotti S, Pereira R, Pilo F, Piluso A, Pizzolotto C, Plyaskin V, Pohl M, Poireau V, Postaci E, Putze A, Quadrani L, Qi XM, Rancoita PG, Rapin D, Ricol JS, Rodríguez I, Rosier-Lees S, Rozhkov A, Rozza D, Sagdeev R, Sandweiss J, Saouter P, Sbarra C, Schael S, Schmidt SM, Schuckardt D, Schulz von Dratzig A, Schwering G, Scolieri G, Seo ES, Shan BS, Shan YH, Shi JY, Shi XY, Shi YM, Siedenburg T, Son D, Spada F, Spinella F, Sun W, Sun WH, Tacconi M, Tang CP, Tang XW, Tang ZC, Tao L, Tescaro D, Ting SCC, Ting SM, Tomassetti N, Torsti J, Türkoğlu C, Urban T, Vagelli V, Valente E, Vannini C, Valtonen E, Vaurynovich S, Vecchi M, Velasco M, Vialle JP, Wang LQ, Wang QL, Wang RS, Wang X, Wang ZX, Weng ZL, Whitman K, Wienkenhöver J, Wu H, Xia X, Xie M, Xie S, Xiong RQ, Xin GM, Xu NS, Xu W, Yan Q, Yang J, Yang M, Ye QH, Yi H, Yu YJ, Yu ZQ, Zeissler S, Zhang JH, Zhang MT, Zhang XB, Zhang Z, Zheng ZM, Zhuang HL, Zhukov V, Zichichi A, Zimmermann N, Zuccon P, Zurbach C. Electron and positron fluxes in primary cosmic rays measured with the alpha magnetic spectrometer on the international space station. Phys Rev Lett 2014; 113:121102. [PMID: 25279617 DOI: 10.1103/physrevlett.113.121102] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Indexed: 06/03/2023]
Abstract
Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the positron flux each require a description beyond a single power-law spectrum. Both the electron flux and the positron flux change their behavior at ∼30 GeV but the fluxes are significantly different in their magnitude and energy dependence. Between 20 and 200 GeV the positron spectral index is significantly harder than the electron spectral index. The determination of the differing behavior of the spectral indices versus energy is a new observation and provides important information on the origins of cosmic-ray electrons and positrons.
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Affiliation(s)
- M Aguilar
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - D Aisa
- INFN-Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - A Alvino
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - G Ambrosi
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - K Andeen
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - L Arruda
- Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - N Attig
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany
| | - P Azzarello
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland and INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - A Bachlechner
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Barao
- Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - A Barrau
- Laboratoire de Physique subatomique et de cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - L Barrin
- European Organization for Nuclear Research, CERN, CH-1211 Geneva 23, Switzerland
| | | | - L Basara
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France and INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - M Battarbee
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - R Battiston
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - J Bazo
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - U Becker
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Behlmann
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - B Beischer
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - J Berdugo
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - B Bertucci
- INFN-Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - G Bigongiari
- INFN-Sezione di Pisa, I-56100 Pisa, Italy and Università di Pisa, I-56100 Pisa, Italy
| | - V Bindi
- University of Hawaii, Physics and Astronomy Department, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - S Bizzaglia
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - M Bizzarri
- INFN-Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - G Boella
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - W de Boer
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - K Bollweg
- National Aeronautics and Space Administration (NASA), Johnson Space Center and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - V Bonnivard
- Laboratoire de Physique subatomique et de cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - B Borgia
- INFN-Sezione di Roma 1, I-00185 Roma, Italy and Università di Roma La Sapienza, I-00185 Roma, Italy
| | - S Borsini
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - M J Boschini
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - M Bourquin
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - J Burger
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - F Cadoux
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - X D Cai
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Capell
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - S Caroff
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - J Casaus
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - V Cascioli
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | | | - I Cernuda
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - F Cervelli
- INFN-Sezione di Pisa, I-56100 Pisa, Italy
| | - M J Chae
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - Y H Chang
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan
| | - A I Chen
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - H Chen
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - G M Cheng
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - H S Chen
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - L Cheng
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - A Chikanian
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - H Y Chou
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan
| | - E Choumilov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - V Choutko
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - C H Chung
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - C Clark
- National Aeronautics and Space Administration (NASA), Johnson Space Center and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - R Clavero
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain
| | - G Coignet
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - C Consolandi
- University of Hawaii, Physics and Astronomy Department, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - A Contin
- INFN-Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - C Corti
- University of Hawaii, Physics and Astronomy Department, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - B Coste
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - Z Cui
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - M Dai
- Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, Beijing 100080, China
| | - C Delgado
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - S Della Torre
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - M B Demirköz
- Department of Physics, Middle East Technical University (METU), 06800 Ankara, Turkey
| | - L Derome
- Laboratoire de Physique subatomique et de cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - S Di Falco
- INFN-Sezione di Pisa, I-56100 Pisa, Italy
| | - L Di Masso
- INFN-Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - F Dimiccoli
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - C Díaz
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - P von Doetinchem
- University of Hawaii, Physics and Astronomy Department, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - W J Du
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - M Duranti
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - D D'Urso
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - A Eline
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - F J Eppling
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - T Eronen
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Y Y Fan
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - L Farnesini
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - J Feng
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - E Fiandrini
- INFN-Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - A Fiasson
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - E Finch
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - P Fisher
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Y Galaktionov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - G Gallucci
- European Organization for Nuclear Research, CERN, CH-1211 Geneva 23, Switzerland and INFN-Sezione di Pisa, I-56100 Pisa, Italy
| | - B García
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - R García-López
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain
| | - H Gast
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - I Gebauer
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - M Gervasi
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - A Ghelfi
- Laboratoire de Physique subatomique et de cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - W Gillard
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan
| | - F Giovacchini
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - P Goglov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - J Gong
- Southeast University, SEU, Nanjing 210096, China
| | - C Goy
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - V Grabski
- Instituto de Física, Universidad Nacional Autónoma de México (UNAM), México, D.F., 01000 México
| | - D Grandi
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - M Graziani
- European Organization for Nuclear Research, CERN, CH-1211 Geneva 23, Switzerland and INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - C Guandalini
- INFN-Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - I Guerri
- INFN-Sezione di Pisa, I-56100 Pisa, Italy and Università di Pisa, I-56100 Pisa, Italy
| | - K H Guo
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - M Habiby
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - S Haino
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan and Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - K C Han
- National Chung-Shan Institute of Science and Technology (NCSIST), Longtan, Tao Yuan 325, Taiwan
| | - Z H He
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - M Heil
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA and Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - J Hoffman
- National Central University (NCU), Chung-Li, Tao Yuan 32054, Taiwan
| | - T H Hsieh
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Z C Huang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - C Huh
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - M Incagli
- INFN-Sezione di Pisa, I-56100 Pisa, Italy
| | - M Ionica
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - W Y Jang
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - H Jinchi
- National Chung-Shan Institute of Science and Technology (NCSIST), Longtan, Tao Yuan 325, Taiwan
| | - K Kanishev
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - G N Kim
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - K S Kim
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - Th Kirn
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - R Kossakowski
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - O Kounina
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - A Kounine
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - V Koutsenko
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M S Krafczyk
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - S Kunz
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - G La Vacca
- European Organization for Nuclear Research, CERN, CH-1211 Geneva 23, Switzerland and INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - E Laudi
- INFN-Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | - G Laurenti
- INFN-Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - I Lazzizzera
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - A Lebedev
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - H T Lee
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - S C Lee
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - C Leluc
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - H L Li
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - J Q Li
- Southeast University, SEU, Nanjing 210096, China
| | - Q Li
- Southeast University, SEU, Nanjing 210096, China
| | - Q Li
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - T X Li
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - W Li
- Beihang University (BUAA), Beijing 100191, China
| | - Y Li
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - Z H Li
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - Z Y Li
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - S Lim
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - C H Lin
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - P Lipari
- INFN-Sezione di Roma 1, I-00185 Roma, Italy
| | - T Lippert
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany
| | - D Liu
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - H Liu
- Southeast University, SEU, Nanjing 210096, China
| | - T Lomtadze
- INFN-Sezione di Pisa, I-56100 Pisa, Italy
| | - M J Lu
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italy
| | - Y S Lu
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - K Luebelsmeyer
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Luo
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - J Z Luo
- Southeast University, SEU, Nanjing 210096, China
| | - S S Lv
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - R Majka
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - A Malinin
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - C Mañá
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - J Marín
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - T Martin
- National Aeronautics and Space Administration (NASA), Johnson Space Center and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - G Martínez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - N Masi
- INFN-Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - D Maurin
- Laboratoire de Physique subatomique et de cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - A Menchaca-Rocha
- Instituto de Física, Universidad Nacional Autónoma de México (UNAM), México, D.F., 01000 México
| | - Q Meng
- Southeast University, SEU, Nanjing 210096, China
| | - D C Mo
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | | | - P Mott
- National Aeronautics and Space Administration (NASA), Johnson Space Center and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - M Müller
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - J Q Ni
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - N Nikonov
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - F Nozzoli
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - P Nunes
- Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - A Obermeier
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Oliva
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - M Orcinha
- Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - F Palmonari
- INFN-Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - C Palomares
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - M Paniccia
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - A Papi
- INFN-Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | | | - S Pensotti
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - R Pereira
- University of Hawaii, Physics and Astronomy Department, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA and Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - F Pilo
- INFN-Sezione di Pisa, I-56100 Pisa, Italy
| | - A Piluso
- INFN-Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy
| | | | - V Plyaskin
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Pohl
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - V Poireau
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - E Postaci
- Department of Physics, Middle East Technical University (METU), 06800 Ankara, Turkey
| | - A Putze
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - L Quadrani
- INFN-Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - X M Qi
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - P G Rancoita
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - D Rapin
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - J S Ricol
- Laboratoire de Physique subatomique et de cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - I Rodríguez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - S Rosier-Lees
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - A Rozhkov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - D Rozza
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - R Sagdeev
- East-West Center for Space Science, University of Maryland, College Park, Maryland 20742, USA
| | - J Sandweiss
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - P Saouter
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - C Sbarra
- INFN-Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - S Schael
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - S M Schmidt
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany
| | - D Schuckardt
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - A Schulz von Dratzig
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - G Schwering
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - G Scolieri
- INFN-Sezione di Perugia, I-06100 Perugia, Italy
| | - E S Seo
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - B S Shan
- Beihang University (BUAA), Beijing 100191, China
| | - Y H Shan
- Beihang University (BUAA), Beijing 100191, China
| | - J Y Shi
- Southeast University, SEU, Nanjing 210096, China
| | - X Y Shi
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Y M Shi
- Shanghai Jiaotong University (SJTU), Shanghai 200030, China
| | - T Siedenburg
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - D Son
- CHEP, Kyungpook National University, 702-701 Daegu, Korea
| | - F Spada
- INFN-Sezione di Roma 1, I-00185 Roma, Italy
| | - F Spinella
- INFN-Sezione di Pisa, I-56100 Pisa, Italy
| | - W Sun
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - W H Sun
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Tacconi
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italy and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - C P Tang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - X W Tang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - Z C Tang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - L Tao
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - D Tescaro
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain
| | - Samuel C C Ting
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - S M Ting
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - N Tomassetti
- Laboratoire de Physique subatomique et de cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - J Torsti
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - C Türkoğlu
- Department of Physics, Middle East Technical University (METU), 06800 Ankara, Turkey
| | - T Urban
- National Aeronautics and Space Administration (NASA), Johnson Space Center and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - V Vagelli
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - E Valente
- INFN-Sezione di Roma 1, I-00185 Roma, Italy and Università di Roma La Sapienza, I-00185 Roma, Italy
| | - C Vannini
- INFN-Sezione di Pisa, I-56100 Pisa, Italy
| | - E Valtonen
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - S Vaurynovich
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Vecchi
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - M Velasco
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - J P Vialle
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - L Q Wang
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - Q L Wang
- Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, Beijing 100080, China
| | - R S Wang
- Shanghai Jiaotong University (SJTU), Shanghai 200030, China
| | - X Wang
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Z X Wang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - Z L Weng
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - K Whitman
- University of Hawaii, Physics and Astronomy Department, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - J Wienkenhöver
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - H Wu
- Southeast University, SEU, Nanjing 210096, China
| | - X Xia
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - M Xie
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - S Xie
- Shanghai Jiaotong University (SJTU), Shanghai 200030, China
| | - R Q Xiong
- Southeast University, SEU, Nanjing 210096, China
| | - G M Xin
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - N S Xu
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - W Xu
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China and Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Q Yan
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - J Yang
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - M Yang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - Q H Ye
- Shanghai Jiaotong University (SJTU), Shanghai 200030, China
| | - H Yi
- Southeast University, SEU, Nanjing 210096, China
| | - Y J Yu
- Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, Beijing 100080, China
| | - Z Q Yu
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - S Zeissler
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
| | - J H Zhang
- Southeast University, SEU, Nanjing 210096, China
| | - M T Zhang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - X B Zhang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - Z Zhang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - Z M Zheng
- Beihang University (BUAA), Beijing 100191, China
| | - H L Zhuang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100039, China
| | - V Zhukov
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Zichichi
- INFN-Sezione di Bologna, I-40126 Bologna, Italy and Università di Bologna, I-40126 Bologna, Italy
| | - N Zimmermann
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - P Zuccon
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - C Zurbach
- Laboratoire Univers et Particules de Montpellier (LUPM), IN2P3/CNRS and Université de Montpellier II, F-34095 Montpellier, France
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Accardo L, Aguilar M, Aisa D, Alpat B, Alvino A, Ambrosi G, Andeen K, Arruda L, Attig N, Azzarello P, Bachlechner A, Barao F, Barrau A, Barrin L, Bartoloni A, Basara L, Battarbee M, Battiston R, Bazo J, Becker U, Behlmann M, Beischer B, Berdugo J, Bertucci B, Bigongiari G, Bindi V, Bizzaglia S, Bizzarri M, Boella G, de Boer W, Bollweg K, Bonnivard V, Borgia B, Borsini S, Boschini MJ, Bourquin M, Burger J, Cadoux F, Cai XD, Capell M, Caroff S, Carosi G, Casaus J, Cascioli V, Castellini G, Cernuda I, Cerreta D, Cervelli F, Chae MJ, Chang YH, Chen AI, Chen H, Cheng GM, Chen HS, Cheng L, Chikanian A, Chou HY, Choumilov E, Choutko V, Chung CH, Cindolo F, Clark C, Clavero R, Coignet G, Consolandi C, Contin A, Corti C, Coste B, Cui Z, Dai M, Delgado C, Della Torre S, Demirköz MB, Derome L, Di Falco S, Di Masso L, Dimiccoli F, Díaz C, von Doetinchem P, Du WJ, Duranti M, D'Urso D, Eline A, Eppling FJ, Eronen T, Fan YY, Farnesini L, Feng J, Fiandrini E, Fiasson A, Finch E, Fisher P, Galaktionov Y, Gallucci G, García B, García-López R, Gast H, Gebauer I, Gervasi M, Ghelfi A, Gillard W, Giovacchini F, Goglov P, Gong J, Goy C, Grabski V, Grandi D, Graziani M, Guandalini C, Guerri I, Guo KH, Haas D, Habiby M, Haino S, Han KC, He ZH, Heil M, Henning R, Hoffman J, Hsieh TH, Huang ZC, Huh C, Incagli M, Ionica M, Jang WY, Jinchi H, Kanishev K, Kim GN, Kim KS, Kirn T, Kossakowski R, Kounina O, Kounine A, Koutsenko V, Krafczyk MS, Kunz S, La Vacca G, Laudi E, Laurenti G, Lazzizzera I, Lebedev A, Lee HT, Lee SC, Leluc C, Levi G, Li HL, Li JQ, Li Q, Li Q, Li TX, Li W, Li Y, Li ZH, Li ZY, Lim S, Lin CH, Lipari P, Lippert T, Liu D, Liu H, Lolli M, Lomtadze T, Lu MJ, Lu YS, Luebelsmeyer K, Luo F, Luo JZ, Lv SS, Majka R, Malinin A, Mañá C, Marín J, Martin T, Martínez G, Masi N, Massera F, Maurin D, Menchaca-Rocha A, Meng Q, Mo DC, Monreal B, Morescalchi L, Mott P, Müller M, Ni JQ, Nikonov N, Nozzoli F, Nunes P, Obermeier A, Oliva A, Orcinha M, Palmonari F, Palomares C, Paniccia M, Papi A, Pauluzzi M, Pedreschi E, Pensotti S, Pereira R, Pilastrini R, Pilo F, Piluso A, Pizzolotto C, Plyaskin V, Pohl M, Poireau V, Postaci E, Putze A, Quadrani L, Qi XM, Rancoita PG, Rapin D, Ricol JS, Rodríguez I, Rosier-Lees S, Rossi L, Rozhkov A, Rozza D, Rybka G, Sagdeev R, Sandweiss J, Saouter P, Sbarra C, Schael S, Schmidt SM, Schuckardt D, Schulz von Dratzig A, Schwering G, Scolieri G, Seo ES, Shan BS, Shan YH, Shi JY, Shi XY, Shi YM, Siedenburg T, Son D, Spada F, Spinella F, Sun W, Sun WH, Tacconi M, Tang CP, Tang XW, Tang ZC, Tao L, Tescaro D, Ting SCC, Ting SM, Tomassetti N, Torsti J, Türkoğlu C, Urban T, Vagelli V, Valente E, Vannini C, Valtonen E, Vaurynovich S, Vecchi M, Velasco M, Vialle JP, Vitale V, Volpini G, Wang LQ, Wang QL, Wang RS, Wang X, Wang ZX, Weng ZL, Whitman K, Wienkenhöver J, Wu H, Wu KY, Xia X, Xie M, Xie S, Xiong RQ, Xin GM, Xu NS, Xu W, Yan Q, Yang J, Yang M, Ye QH, Yi H, Yu YJ, Yu ZQ, Zeissler S, Zhang JH, Zhang MT, Zhang XB, Zhang Z, Zheng ZM, Zhou F, Zhuang HL, Zhukov V, Zichichi A, Zimmermann N, Zuccon P, Zurbach C. High statistics measurement of the positron fraction in primary cosmic rays of 0.5-500 GeV with the alpha magnetic spectrometer on the international space station. Phys Rev Lett 2014; 113:121101. [PMID: 25279616 DOI: 10.1103/physrevlett.113.121101] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Indexed: 06/03/2023]
Abstract
A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show, for the first time, that above ∼200 GeV the positron fraction no longer exhibits an increase with energy.
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Affiliation(s)
- L Accardo
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - M Aguilar
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - D Aisa
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx and Università di Perugia, I-06100 Perugia, Italy
| | - B Alpat
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - A Alvino
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - G Ambrosi
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - K Andeen
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, KIT, D-76128 Karlsruhe, GermanyB
| | - L Arruda
- Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - N Attig
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, GermanyA
| | - P Azzarello
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland and INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - A Bachlechner
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - F Barao
- Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - A Barrau
- Laboratoire de Physique Subatomique et de Cosmologie, LPSC, Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - L Barrin
- European Organization for Nuclear Research, CERN, CH-1211 Geneva 23, Switzerland
| | - A Bartoloni
- INFN-Sezione di Roma 1, I-00185 Roma, Italyx
| | - L Basara
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France and INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italyx
| | - M Battarbee
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - R Battiston
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italyx
| | - J Bazo
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - U Becker
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - M Behlmann
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - B Beischer
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - J Berdugo
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - B Bertucci
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx and Università di Perugia, I-06100 Perugia, Italy
| | - G Bigongiari
- INFN-Sezione di Pisa, I-56100 Pisa, Italyx and Università di Pisa, I-56100 Pisa, Italy
| | - V Bindi
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - S Bizzaglia
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - M Bizzarri
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx and Università di Perugia, I-06100 Perugia, Italy
| | - G Boella
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - W de Boer
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, KIT, D-76128 Karlsruhe, GermanyB
| | - K Bollweg
- NASA, National Aeronautics and Space Administration, Johnson Space Center, JSC, and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - V Bonnivard
- Laboratoire de Physique Subatomique et de Cosmologie, LPSC, Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - B Borgia
- INFN-Sezione di Roma 1, I-00185 Roma, Italyx and Università di Roma La Sapienza, I-00185 Roma, Italy
| | - S Borsini
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - M J Boschini
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx
| | - M Bourquin
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - J Burger
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - F Cadoux
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - X D Cai
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - M Capell
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - S Caroff
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - G Carosi
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - J Casaus
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - V Cascioli
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | | | - I Cernuda
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - D Cerreta
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx and Università di Perugia, I-06100 Perugia, Italy
| | - F Cervelli
- INFN-Sezione di Pisa, I-56100 Pisa, Italyx
| | - M J Chae
- Department of Physics, Ewha Womans University, Seoul 120-750, KoreaE
| | - Y H Chang
- National Central University, NCU, Chung-Li, Tao Yuan 32054, Taiwany
| | - A I Chen
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - H Chen
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - G M Cheng
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - H S Chen
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - L Cheng
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - A Chikanian
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - H Y Chou
- National Central University, NCU, Chung-Li, Tao Yuan 32054, Taiwany
| | - E Choumilov
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - V Choutko
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - C H Chung
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - F Cindolo
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - C Clark
- NASA, National Aeronautics and Space Administration, Johnson Space Center, JSC, and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - R Clavero
- Instituto de Astrofísica de Canarias, IAC, E-38205 La Laguna, Tenerife, Spain
| | - G Coignet
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - C Consolandi
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - A Contin
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - C Corti
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - B Coste
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italyx
| | - Z Cui
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - M Dai
- Institute of Electrical Engineering, IEE, Chinese Academy of Sciences, Beijing 100080, China
| | - C Delgado
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - S Della Torre
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx
| | - M B Demirköz
- Department of Physics, Middle East Technical University, METU, 06800 Ankara, Turkeyv
| | - L Derome
- Laboratoire de Physique Subatomique et de Cosmologie, LPSC, Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - S Di Falco
- INFN-Sezione di Pisa, I-56100 Pisa, Italyx
| | - L Di Masso
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx and Università di Perugia, I-06100 Perugia, Italy
| | - F Dimiccoli
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italyx
| | - C Díaz
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - P von Doetinchem
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - W J Du
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - M Duranti
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - D D'Urso
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - A Eline
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - F J Eppling
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - T Eronen
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Y Y Fan
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwany
| | - L Farnesini
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - J Feng
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - E Fiandrini
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx and Università di Perugia, I-06100 Perugia, Italy
| | - A Fiasson
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - E Finch
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - P Fisher
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - Y Galaktionov
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - G Gallucci
- European Organization for Nuclear Research, CERN, CH-1211 Geneva 23, Switzerland and INFN-Sezione di Pisa, I-56100 Pisa, Italyx
| | - B García
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - R García-López
- Instituto de Astrofísica de Canarias, IAC, E-38205 La Laguna, Tenerife, Spain
| | - H Gast
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - I Gebauer
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, KIT, D-76128 Karlsruhe, GermanyB
| | - M Gervasi
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - A Ghelfi
- Laboratoire de Physique Subatomique et de Cosmologie, LPSC, Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - W Gillard
- National Central University, NCU, Chung-Li, Tao Yuan 32054, Taiwany
| | - F Giovacchini
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - P Goglov
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - J Gong
- Southeast University, SEU, Nanjing 210096, China
| | - C Goy
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - V Grabski
- Instituto de Física, Universidad Nacional Autónoma de México, UNAM, México D.F. 01000, MéxicoD
| | - D Grandi
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx
| | - M Graziani
- European Organization for Nuclear Research, CERN, CH-1211 Geneva 23, Switzerland and INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - C Guandalini
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - I Guerri
- INFN-Sezione di Pisa, I-56100 Pisa, Italyx and Università di Pisa, I-56100 Pisa, Italy
| | - K H Guo
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - D Haas
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - M Habiby
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - S Haino
- National Central University, NCU, Chung-Li, Tao Yuan 32054, Taiwany and Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwany
| | - K C Han
- National Chung-Shan Institute of Science and Technology, NCSIST, Longtan, Tao Yuan 325, Taiwan
| | - Z H He
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - M Heil
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA and Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, KIT, D-76128 Karlsruhe, GermanyB
| | - R Henning
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - J Hoffman
- National Central University, NCU, Chung-Li, Tao Yuan 32054, Taiwany
| | - T H Hsieh
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - Z C Huang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - C Huh
- CHEP, Kyungpook National University, 702-701 Daegu, Koreaz
| | - M Incagli
- INFN-Sezione di Pisa, I-56100 Pisa, Italyx
| | - M Ionica
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - W Y Jang
- CHEP, Kyungpook National University, 702-701 Daegu, Koreaz
| | - H Jinchi
- National Chung-Shan Institute of Science and Technology, NCSIST, Longtan, Tao Yuan 325, Taiwan
| | - K Kanishev
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italyx
| | - G N Kim
- CHEP, Kyungpook National University, 702-701 Daegu, Koreaz
| | - K S Kim
- CHEP, Kyungpook National University, 702-701 Daegu, Koreaz
| | - Th Kirn
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - R Kossakowski
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - O Kounina
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - A Kounine
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - V Koutsenko
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - M S Krafczyk
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - S Kunz
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, KIT, D-76128 Karlsruhe, GermanyB
| | - G La Vacca
- European Organization for Nuclear Research, CERN, CH-1211 Geneva 23, Switzerland and INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx
| | - E Laudi
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx and Università di Perugia, I-06100 Perugia, Italy
| | - G Laurenti
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - I Lazzizzera
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italyx
| | - A Lebedev
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - H T Lee
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwany
| | - S C Lee
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwany
| | - C Leluc
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - G Levi
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - H L Li
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwany
| | - J Q Li
- Southeast University, SEU, Nanjing 210096, China
| | - Q Li
- Southeast University, SEU, Nanjing 210096, China
| | - Q Li
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - T X Li
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - W Li
- Beihang University, BUAA, Beijing 100191, China
| | - Y Li
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - Z H Li
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - Z Y Li
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwany
| | - S Lim
- Department of Physics, Ewha Womans University, Seoul 120-750, KoreaE
| | - C H Lin
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwany
| | - P Lipari
- INFN-Sezione di Roma 1, I-00185 Roma, Italyx
| | - T Lippert
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, GermanyA
| | - D Liu
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwany
| | - H Liu
- Southeast University, SEU, Nanjing 210096, China
| | - M Lolli
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - T Lomtadze
- INFN-Sezione di Pisa, I-56100 Pisa, Italyx
| | - M J Lu
- INFN-TIFPA and Università di Trento, I-38123 Povo, Trento, Italyx
| | - Y S Lu
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - K Luebelsmeyer
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - F Luo
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - J Z Luo
- Southeast University, SEU, Nanjing 210096, China
| | - S S Lv
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - R Majka
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - A Malinin
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - C Mañá
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - J Marín
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - T Martin
- NASA, National Aeronautics and Space Administration, Johnson Space Center, JSC, and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - G Martínez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - N Masi
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - F Massera
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - D Maurin
- Laboratoire de Physique Subatomique et de Cosmologie, LPSC, Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - A Menchaca-Rocha
- Instituto de Física, Universidad Nacional Autónoma de México, UNAM, México D.F. 01000, MéxicoD
| | - Q Meng
- Southeast University, SEU, Nanjing 210096, China
| | - D C Mo
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - B Monreal
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | | | - P Mott
- NASA, National Aeronautics and Space Administration, Johnson Space Center, JSC, and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - M Müller
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - J Q Ni
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - N Nikonov
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, KIT, D-76128 Karlsruhe, GermanyB
| | - F Nozzoli
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - P Nunes
- Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - A Obermeier
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - A Oliva
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - M Orcinha
- Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - F Palmonari
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - C Palomares
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - M Paniccia
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - A Papi
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - M Pauluzzi
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx and Università di Perugia, I-06100 Perugia, Italy
| | | | - S Pensotti
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - R Pereira
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA and Laboratório de Instrumentação e Física Experimental de Partículas, LIP, P-1000 Lisboa, Portugal
| | - R Pilastrini
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - F Pilo
- INFN-Sezione di Pisa, I-56100 Pisa, Italyx
| | - A Piluso
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx and Università di Perugia, I-06100 Perugia, Italy
| | - C Pizzolotto
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - V Plyaskin
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - M Pohl
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - V Poireau
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - E Postaci
- Department of Physics, Middle East Technical University, METU, 06800 Ankara, Turkeyv
| | - A Putze
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - L Quadrani
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - X M Qi
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - P G Rancoita
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx
| | - D Rapin
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - J S Ricol
- Laboratoire de Physique Subatomique et de Cosmologie, LPSC, Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - I Rodríguez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - S Rosier-Lees
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - L Rossi
- European Organization for Nuclear Research, CERN, CH-1211 Geneva 23, Switzerland
| | - A Rozhkov
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - D Rozza
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx
| | - G Rybka
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - R Sagdeev
- East-West Center for Space Science, University of Maryland, College Park, Maryland 20742, USA
| | - J Sandweiss
- Physics Department, Yale University, New Haven, Connecticut 06520, USA
| | - P Saouter
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - C Sbarra
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - S Schael
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - S M Schmidt
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, GermanyA
| | - D Schuckardt
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, KIT, D-76128 Karlsruhe, GermanyB
| | - A Schulz von Dratzig
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - G Schwering
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - G Scolieri
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - E S Seo
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - B S Shan
- Beihang University, BUAA, Beijing 100191, China
| | - Y H Shan
- Beihang University, BUAA, Beijing 100191, China
| | - J Y Shi
- Southeast University, SEU, Nanjing 210096, China
| | - X Y Shi
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - Y M Shi
- Shanghai Jiaotong University, SJTU, Shanghai 200030, China
| | - T Siedenburg
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - D Son
- CHEP, Kyungpook National University, 702-701 Daegu, Koreaz
| | - F Spada
- INFN-Sezione di Roma 1, I-00185 Roma, Italyx
| | - F Spinella
- INFN-Sezione di Pisa, I-56100 Pisa, Italyx
| | - W Sun
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - W H Sun
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - M Tacconi
- INFN-Sezione di Milano-Bicocca, I-20126 Milano, Italyx and Università di Milano-Bicocca, I-20126 Milano, Italy
| | - C P Tang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - X W Tang
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - Z C Tang
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - L Tao
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - D Tescaro
- Instituto de Astrofísica de Canarias, IAC, E-38205 La Laguna, Tenerife, Spain
| | - Samuel C C Ting
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - S M Ting
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - N Tomassetti
- Laboratoire de Physique Subatomique et de Cosmologie, LPSC, Université Grenoble-Alpes, CNRS/IN2P3, F-38026 Grenoble, France
| | - J Torsti
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - C Türkoğlu
- Department of Physics, Middle East Technical University, METU, 06800 Ankara, Turkeyv
| | - T Urban
- NASA, National Aeronautics and Space Administration, Johnson Space Center, JSC, and Jacobs-Sverdrup, Houston, Texas 77058, USA
| | - V Vagelli
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, KIT, D-76128 Karlsruhe, GermanyB
| | - E Valente
- INFN-Sezione di Roma 1, I-00185 Roma, Italyx and Università di Roma La Sapienza, I-00185 Roma, Italy
| | - C Vannini
- INFN-Sezione di Pisa, I-56100 Pisa, Italyx
| | - E Valtonen
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - S Vaurynovich
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - M Vecchi
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - M Velasco
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - J P Vialle
- Laboratoire d'Annecy-Le-Vieux de Physique des Particules, LAPP, IN2P3/CNRS and Université de Savoie, F-74941 Annecy-le-Vieux, France
| | - V Vitale
- INFN-Sezione di Perugia, I-06100 Perugia, Italyx
| | - G Volpini
- INFN-Sezione di Milano and Università di Milano, I-20090 Milano, Italy
| | - L Q Wang
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - Q L Wang
- Institute of Electrical Engineering, IEE, Chinese Academy of Sciences, Beijing 100080, China
| | - R S Wang
- Shanghai Jiaotong University, SJTU, Shanghai 200030, China
| | - X Wang
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - Z X Wang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - Z L Weng
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - K Whitman
- Physics and Astronomy Department, University of Hawaii, 2505 Correa Road, WAT 432, Honolulu, Hawaii 96822, USA
| | - J Wienkenhöver
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - H Wu
- Southeast University, SEU, Nanjing 210096, China
| | - K Y Wu
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwany
| | - X Xia
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, CIEMAT, E-28040 Madrid, SpainC
| | - M Xie
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - S Xie
- Shanghai Jiaotong University, SJTU, Shanghai 200030, China
| | - R Q Xiong
- Southeast University, SEU, Nanjing 210096, China
| | - G M Xin
- Shandong University, SDU, Jinan, Shandong 250100, China
| | - N S Xu
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - W Xu
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw and Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - Q Yan
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - J Yang
- Department of Physics, Ewha Womans University, Seoul 120-750, KoreaE
| | - M Yang
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - Q H Ye
- Shanghai Jiaotong University, SJTU, Shanghai 200030, China
| | - H Yi
- Southeast University, SEU, Nanjing 210096, China
| | - Y J Yu
- Institute of Electrical Engineering, IEE, Chinese Academy of Sciences, Beijing 100080, China
| | - Z Q Yu
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - S Zeissler
- Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, KIT, D-76128 Karlsruhe, GermanyB
| | - J H Zhang
- Southeast University, SEU, Nanjing 210096, China
| | - M T Zhang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - X B Zhang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - Z Zhang
- Sun Yat-Sen University, SYSU, Guangzhou 510275, China
| | - Z M Zheng
- Beihang University, BUAA, Beijing 100191, China
| | - F Zhou
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - H L Zhuang
- Institute of High Energy Physics, IHEP, Chinese Academy of Sciences, Beijing 100039, Chinaw
| | - V Zhukov
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - A Zichichi
- INFN-Sezione di Bologna, I-40126 Bologna, Italyx and Università di Bologna, I-40126 Bologna, Italy
| | - N Zimmermann
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germanyu
| | - P Zuccon
- Massachusetts Institute of Technology, MIT, Cambridge, Massachusetts 02139, USA
| | - C Zurbach
- Laboratoire Univers et Particules de Montpellier, LUPM, IN2P3/CNRS and Université de Montpellier II, F-34095 Montpellier, France
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Abstract
The biosynthesis of fusion-competent envelope glycoproteins (GPs) is a crucial step in productive viral infection. In this issue, Klaus et al. (2013) identify the cargo receptor endoplasmic reticulum (ER)-Golgi intermediate compartment 53 kDa protein (ERGIC-53) as a binding partner for viral GPs and a crucial cellular factor required for infectious virus production.
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Affiliation(s)
- Antonella Pasquato
- Institute of Microbiology, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Stefan Kunz
- Institute of Microbiology, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
- Corresponding author
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Sallen G, Kunz S, Amand T, Bouet L, Kuroda T, Mano T, Paget D, Krebs O, Marie X, Sakoda K, Urbaszek B. Nuclear magnetization in gallium arsenide quantum dots at zero magnetic field. Nat Commun 2014; 5:3268. [PMID: 24500329 PMCID: PMC3926008 DOI: 10.1038/ncomms4268] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 01/16/2014] [Indexed: 11/09/2022] Open
Abstract
Optical and electrical control of the nuclear spin system allows enhancing the sensitivity of NMR applications and spin-based information storage and processing. Dynamic nuclear polarization in semiconductors is commonly achieved in the presence of a stabilizing external magnetic field. Here we report efficient optical pumping of nuclear spins at zero magnetic field in strain-free GaAs quantum dots. The strong interaction of a single, optically injected electron spin with the nuclear spins acts as a stabilizing, effective magnetic field (Knight field) on the nuclei. We optically tune the Knight field amplitude and direction. In combination with a small transverse magnetic field, we are able to control the longitudinal and transverse components of the nuclear spin polarization in the absence of lattice strain--that is, in dots with strongly reduced static nuclear quadrupole effects, as reproduced by our model calculations.
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Affiliation(s)
- G Sallen
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, 31077 Toulouse, France
| | - S Kunz
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, 31077 Toulouse, France
| | - T Amand
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, 31077 Toulouse, France
| | - L Bouet
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, 31077 Toulouse, France
| | - T Kuroda
- National Institute for Material Science, Namiki 1-1, Tsukuba 305-0044, Japan
| | - T Mano
- National Institute for Material Science, Namiki 1-1, Tsukuba 305-0044, Japan
| | - D Paget
- LPMC, Ecole Polytechnique, CNRS, 91128 Palaiseau, France
| | - O Krebs
- CNRS Laboratoire de Photonique et de Nanostructures, Route de Nozay, 91460 Marcoussis, France
| | - X Marie
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, 31077 Toulouse, France
| | - K Sakoda
- National Institute for Material Science, Namiki 1-1, Tsukuba 305-0044, Japan
| | - B Urbaszek
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, 31077 Toulouse, France
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Stoeckli ET, Kilinc D, Kunz B, Kunz S, Lee GU, Martines E, Rader C, Suter D. Analysis of cell-cell contact mediated by Ig superfamily cell adhesion molecules. Curr Protoc Cell Biol 2013; 61:9.5.1-9.5.85. [PMID: 24510806 DOI: 10.1002/0471143030.cb0905s61] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cell-cell adhesion is a fundamental requirement for all multicellular organisms. The calcium-independent cell adhesion molecules of the immunoglobulin superfamily (IgSF-CAMs) represent a major subgroup. They consist of immunoglobulin folds alone or in combination with other protein modules, often fibronectin type-III folds. More than 100 IgSF-CAMs have been identified in vertebrates and invertebrates. Most of the IgSF-CAMs are cell surface molecules that are membrane-anchored either by a single transmembrane segment or by a glycosylphosphatidylinositol (GPI) anchor. Some of the IgSF-CAMs also occur in soluble form, e.g., in the cerebrospinal fluid or in the vitreous fluid of the eye, due to naturally occurring cleavage of the GPI anchor or the membrane-proximal peptide segment. Some IgSF-CAMs, such as NCAM, occur in various forms that are generated by alternative splicing. This unit contains a series of protocols that have been used to study the function of IgSF-CAMs in vitro and in vivo.
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Affiliation(s)
- Esther T Stoeckli
- Institute of Molecular Life Sciences, University of Zurich, Zurich, Switzerland
| | - Devrim Kilinc
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin, Ireland
| | - Beat Kunz
- Institute of Molecular Life Sciences, University of Zurich, Zurich, Switzerland
| | - Stefan Kunz
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Gil U Lee
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin, Ireland
| | - Elena Martines
- Nanomedicine Centre, School of Chemistry and Chemical Biology, University College Dublin, Dublin, Ireland
| | - Christoph Rader
- Department of Cancer Biology, Scripps Florida, Jupiter, Florida
| | - Daniel Suter
- Department of Biological Sciences, Purdue University, West Lafayette, Indiana
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43
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Goncalves AR, Moraz ML, Pasquato A, Helenius A, Lozach PY, Kunz S. Role of DC-SIGN in Lassa virus entry into human dendritic cells. J Virol 2013; 87:11504-15. [PMID: 23966408 PMCID: PMC3807329 DOI: 10.1128/jvi.01893-13] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 08/10/2013] [Indexed: 11/20/2022] Open
Abstract
The arenavirus Lassa virus (LASV) causes a severe hemorrhagic fever with high mortality in humans. Antigen-presenting cells, in particular dendritic cells (DCs), are early and preferred targets of LASV, and their productive infection contributes to the virus-induced immunosuppression observed in fatal disease. Here, we characterized the role of the C-type lectin DC-specific ICAM-3-grabbing nonintegrin (DC-SIGN) in LASV entry into primary human DCs using a chimera of the prototypic arenavirus lymphocytic choriomeningitis virus (LCMV) expressing the LASV glycoprotein (rLCMV-LASVGP). We found that differentiation of human primary monocytes into DCs enhanced virus attachment and entry, concomitant with the upregulation of DC-SIGN. LASV and rLCMV-LASVGP bound to DC-SIGN via mannose sugars located on the N-terminal GP1 subunit of LASVGP. We provide evidence that DC-SIGN serves as an attachment factor for rLCMV-LASVGP in monocyte-derived immature dendritic cells (MDDC) and can accelerate the capture of free virus. However, in contrast to the phlebovirus Uukuniemi virus (UUKV), which uses DC-SIGN as an authentic entry receptor, productive infection with rLCMV-LASVGP was less dependent on DC-SIGN. In contrast to the DC-SIGN-mediated cell entry of UUKV, entry of rLCMV-LASVGP in MDDC was remarkably slow and depended on actin, indicating the use of different endocytotic pathways. In sum, our data reveal that DC-SIGN can facilitate cell entry of LASV in human MDDC but that its role seems distinct from the function as an authentic entry receptor reported for phleboviruses.
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Affiliation(s)
- Ana-Rita Goncalves
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Marie-Laurence Moraz
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Antonella Pasquato
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Ari Helenius
- Institute of Biochemistry, Federal Institute of Technology, Zurich (ETHZ), Zurich, Switzerland
| | - Pierre-Yves Lozach
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Québec, Canada
| | - Stefan Kunz
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Abstract
Arenaviruses are a large group of emerging viruses including several causative agents of severe hemorrhagic fevers with high mortality in man. Considering the number of people affected and the currently limited therapeutic options, novel efficacious therapeutics against arenaviruses are urgently needed. Over the past decade, significant advances in knowledge about the basic virology of arenaviruses have been accompanied by the development of novel therapeutics targeting different steps of the arenaviral life cycle. High-throughput, small-molecule screens identified potent and broadly active inhibitors of arenavirus entry that were instrumental for the dissection of unique features of arenavirus fusion. Novel inhibitors of arenavirus replication have been successfully tested in animal models and hold promise for application in humans. Late in the arenavirus life cycle, the proteolytic processing of the arenavirus envelope glycoprotein precursor and cellular factors critically involved virion assembly and budding provide further promising 'druggable' targets for novel therapeutics to combat human arenavirus infection.
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Affiliation(s)
- Antonella Pasquato
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
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Pasquato A, Ramos da Palma J, Galan C, Seidah NG, Kunz S. Viral envelope glycoprotein processing by proprotein convertases. Antiviral Res 2013; 99:49-60. [PMID: 23611717 DOI: 10.1016/j.antiviral.2013.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 04/09/2013] [Accepted: 04/14/2013] [Indexed: 01/03/2023]
Abstract
The proprotein convertases (PCs) are a family of nine mammalian enzymes that play key roles in the maintenance of cell homeostasis by activating or inactivating proteins via limited proteolysis under temporal and spatial control. A wide range of pathogens, including major human pathogenic viruses can hijack cellular PCs for their own purposes. In particular, productive infection with many enveloped viruses critically depends on the processing of their fusion-active viral envelope glycoproteins by cellular PCs. Based on their crucial role in virus-host interaction, PCs can be important determinants for viral pathogenesis and represent promising targets of therapeutic antiviral intervention. In the present review we will cover basic aspects and recent developments of PC-mediated maturation of viral envelope glycoproteins of selected medically important viruses. The molecular mechanisms underlying the recognition of PCs by viral glycoproteins will be described, including recent findings demonstrating differential PC-recognition of viral and cellular substrates. We will further discuss a possible scenario how viruses during co-evolution with their hosts adapted their glycoproteins to modulate the activity of cellular PCs for their own benefit and discuss the consequences for virus-host interaction and pathogenesis. Particular attention will be given to past and current efforts to evaluate cellular PCs as targets for antiviral therapeutic intervention, with emphasis on emerging highly pathogenic viruses for which no efficacious drugs or vaccines are currently available.
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Affiliation(s)
- Antonella Pasquato
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne CH-1011, Switzerland.
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Moraz ML, Pythoud C, Turk R, Rothenberger S, Pasquato A, Campbell KP, Kunz S. Cell entry of Lassa virus induces tyrosine phosphorylation of dystroglycan. Cell Microbiol 2012; 15:689-700. [PMID: 23279385 PMCID: PMC3805106 DOI: 10.1111/cmi.12078] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 11/14/2012] [Accepted: 11/19/2012] [Indexed: 11/29/2022]
Abstract
The extracellular matrix (ECM) receptor dystroglycan (DG) serves as a cellular receptor for the highly pathogenic arenavirus Lassa virus (LASV) that causes a haemorrhagic fever with high mortality in human. In the host cell, DG provides a molecular link between the ECM and the actin cytoskeleton via the adapter proteins utrophin or dystrophin. Here we investigated post-translational modifications of DG in the context of LASV cell entry. Using the tyrosine kinase inhibitor genistein, we found that tyrosine kinases are required for efficient internalization of virus particles, but not virus-receptor binding. Engagement of cellular DG by LASV envelope glycoprotein (LASV GP) in human epithelial cells induced tyrosine phosphorylation of the cytoplasmic domain of DG. LASV GP binding to DG further resulted in dissociation of the adapter protein utrophin from virus-bound DG. This virus-induced dissociation of utrophin was affected by genistein treatment, suggesting a role of receptor tyrosine phosphorylation in the process.
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Affiliation(s)
- Marie-Laurence Moraz
- Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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47
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Burri DJ, Pasquato A, da Palma JR, Igonet S, Oldstone MBA, Kunz S. The role of proteolytic processing and the stable signal peptide in expression of the Old World arenavirus envelope glycoprotein ectodomain. Virology 2012; 436:127-33. [PMID: 23218200 DOI: 10.1016/j.virol.2012.10.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 09/21/2012] [Accepted: 10/30/2012] [Indexed: 11/18/2022]
Abstract
Maturation of the arenavirus GP precursor (GPC) involves proteolytic processing by cellular signal peptidase and the proprotein convertase subtilisin kexin isozyme 1 (SKI-1)/site 1 protease (S1P), yielding a tripartite complex comprised of a stable signal peptide (SSP), the receptor-binding GP1, and the fusion-active transmembrane GP2. Here we investigated the roles of SKI-1/S1P processing and SSP in the biosynthesis of the recombinant GP ectodomains of lymphocytic choriomeningitis virus (LCMV) and Lassa virus (LASV). When expressed in mammalian cells, the LCMV and LASV GP ectodomains underwent processing by SKI-1/S1P, followed by dissociation of GP1 from GP2. The GP2 ectodomain spontaneously formed trimers as revealed by chemical cross-linking. The endogenous SSP, known to be crucial for maturation and transport of full-length arenavirus GPC was dispensable for processing and secretion of the soluble GP ectodomain, suggesting a specific role of SSP in the stable prefusion conformation and transport of full-length GPC.
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Affiliation(s)
- Dominique J Burri
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne CH-1011, Switzerland
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48
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Pythoud C, Rodrigo WWSI, Pasqual G, Rothenberger S, Martínez-Sobrido L, de la Torre JC, Kunz S. Arenavirus nucleoprotein targets interferon regulatory factor-activating kinase IKKε. J Virol 2012; 86:7728-38. [PMID: 22532683 PMCID: PMC3421673 DOI: 10.1128/jvi.00187-12] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Accepted: 04/06/2012] [Indexed: 12/24/2022] Open
Abstract
Arenaviruses perturb innate antiviral defense by blocking induction of type I interferon (IFN) production. Accordingly, the arenavirus nucleoprotein (NP) was shown to block activation and nuclear translocation of interferon regulatory factor 3 (IRF3) in response to virus infection. Here, we sought to identify cellular factors involved in innate antiviral signaling targeted by arenavirus NP. Consistent with previous studies, infection with the prototypic arenavirus lymphocytic choriomeningitis virus (LCMV) prevented phosphorylation of IRF3 in response to infection with Sendai virus, a strong inducer of the retinoic acid-inducible gene I (RIG-I)/mitochondrial antiviral signaling (MAVS) pathway of innate antiviral signaling. Using a combination of coimmunoprecipitation and confocal microscopy, we found that LCMV NP associates with the IκB kinase (IKK)-related kinase IKKε but that, rather unexpectedly, LCMV NP did not bind to the closely related TANK-binding kinase 1 (TBK-1). The NP-IKKε interaction was highly conserved among arenaviruses from different clades. In LCMV-infected cells, IKKε colocalized with NP but not with MAVS located on the outer membrane of mitochondria. LCMV NP bound the kinase domain (KD) of IKKε (IKBKE) and blocked its autocatalytic activity and its ability to phosphorylate IRF3, without undergoing phosphorylation. Together, our data identify IKKε as a novel target of arenavirus NP. Engagement of NP seems to sequester IKKε in an inactive complex. Considering the important functions of IKKε in innate antiviral immunity and other cellular processes, the NP-IKKε interaction likely plays a crucial role in arenavirus-host interaction.
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Affiliation(s)
- Christelle Pythoud
- Institute of Microbiology University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | | | - Giulia Pasqual
- Institute of Microbiology University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Sylvia Rothenberger
- Institute of Microbiology University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Luis Martínez-Sobrido
- Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA
| | - Juan Carlos de la Torre
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, USA
| | - Stefan Kunz
- Institute of Microbiology University Hospital Center and University of Lausanne, Lausanne, Switzerland
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49
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Burri DJ, Pasqual G, Rochat C, Seidah NG, Pasquato A, Kunz S. Molecular characterization of the processing of arenavirus envelope glycoprotein precursors by subtilisin kexin isozyme-1/site-1 protease. J Virol 2012; 86:4935-46. [PMID: 22357276 PMCID: PMC3347368 DOI: 10.1128/jvi.00024-12] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Accepted: 02/14/2012] [Indexed: 01/27/2023] Open
Abstract
A crucial step in the life cycle of arenaviruses is the biosynthesis of the mature fusion-active viral envelope glycoprotein (GP) that is essential for virus-host cell attachment and entry. The maturation of the arenavirus GP precursor (GPC) critically depends on proteolytic processing by the cellular proprotein convertase (PC) subtilisin kexin isozyme-1 (SKI-1)/site-1 protease (S1P). Here we undertook a molecular characterization of the SKI-1/S1P processing of the GPCs of the prototypic arenavirus lymphocytic choriomeningitis virus (LCMV) and the pathogenic Lassa virus (LASV). Previous studies showed that the GPC of LASV undergoes processing in the endoplasmic reticulum (ER)/cis-Golgi compartment, whereas the LCMV GPC is cleaved in a late Golgi compartment. Herein we confirm these findings and provide evidence that the SKI-1/S1P recognition site RRLL, present in the SKI-1/S1P prodomain and LASV GPC, but not in the LCMV GPC, is crucial for the processing of the LASV GPC in the ER/cis-Golgi compartment. Our structure-function analysis revealed that the cleavage of arenavirus GPCs, but not cellular substrates, critically depends on the autoprocessing of SKI-1/S1P, suggesting differences in the processing of cellular and viral substrates. Deletion mutagenesis showed that the transmembrane and intracellular domains of SKI-1/S1P are dispensable for arenavirus GPC processing. The expression of a soluble form of the protease in SKI-I/S1P-deficient cells resulted in the efficient processing of arenavirus GPCs and rescued productive virus infection. However, exogenous soluble SKI-1/S1P was unable to process LCMV and LASV GPCs displayed at the surface of SKI-I/S1P-deficient cells, indicating that GPC processing occurs in an intracellular compartment. In sum, our study reveals important differences in the SKI-1/S1P processing of viral and cellular substrates.
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Affiliation(s)
- Dominique J. Burri
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Giulia Pasqual
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Cylia Rochat
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Nabil G. Seidah
- Laboratory of Biochemical Neuroendocrinology, Clinical Research Institute of Montreal, Montreal, Canada
| | - Antonella Pasquato
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Stefan Kunz
- Institute of Microbiology, University Hospital Center and University of Lausanne, Lausanne, Switzerland
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50
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Rojek JM, Moraz ML, Pythoud C, Rothenberger S, Van der Goot FG, Campbell KP, Kunz S. Binding of Lassa virus perturbs extracellular matrix-induced signal transduction via dystroglycan. Cell Microbiol 2012; 14:1122-34. [PMID: 22405130 PMCID: PMC3869547 DOI: 10.1111/j.1462-5822.2012.01784.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The arenavirus Lassa virus (LASV) causes a severe haemorrhagic fever with high mortality in man. The cellular receptor for LASV is dystroglycan (DG). DG is a ubiquitous receptor for extracellular matrix (ECM) proteins, which cooperates with β1 integrins to control cell-matrix interactions. Here, we investigated whether LASV binding to DG triggers signal transduction, mimicking the natural ligands. Engagement of DG by LASV resulted in the recruitment of the adaptor protein Grb2 and the protein kinase MEK1 by the cytoplasmic domain of DG without activating the MEK/ERK pathway, indicating assembly of an inactive signalling complex. LASV binding to cells however affected the activation of the MEK/ERK pathway via α6β1 integrins. The virus-induced perturbation of α6β1 integrin signalling critically depended on high-affinity LASV binding to DG and DG's cytoplasmic domain, indicating that LASV-receptor binding perturbed signalling cross-talk between DG and β1 integrins.
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Affiliation(s)
- Jillian M Rojek
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA
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