1
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Bermejo IA, Guerreiro A, Eguskiza A, Martínez-Sáez N, Lazaris FS, Asín A, Somovilla VJ, Compañón I, Raju TK, Tadic S, Garrido P, García-Sanmartín J, Mangini V, Grosso AS, Marcelo F, Avenoza A, Busto JH, García-Martín F, Hurtado-Guerrero R, Peregrina JM, Bernardes GJL, Martínez A, Fiammengo R, Corzana F. Structure-Guided Approach for the Development of MUC1-Glycopeptide-Based Cancer Vaccines with Predictable Responses. JACS Au 2024; 4:150-163. [PMID: 38274250 PMCID: PMC10807005 DOI: 10.1021/jacsau.3c00587] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 01/27/2024]
Abstract
Mucin-1 (MUC1) glycopeptides are exceptional candidates for potential cancer vaccines. However, their autoantigenic nature often results in a weak immune response. To overcome this drawback, we carefully engineered synthetic antigens with precise chemical modifications. To be effective and stimulate an anti-MUC1 response, artificial antigens must mimic the conformational dynamics of natural antigens in solution and have an equivalent or higher binding affinity to anti-MUC1 antibodies than their natural counterparts. As a proof of concept, we have developed a glycopeptide that contains noncanonical amino acid (2S,3R)-3-hydroxynorvaline. The unnatural antigen fulfills these two properties and effectively mimics the threonine-derived antigen. On the one hand, conformational analysis in water shows that this surrogate explores a landscape similar to that of the natural variant. On the other hand, the presence of an additional methylene group in the side chain of this analog compared to the threonine residue enhances a CH/π interaction in the antigen/antibody complex. Despite an enthalpy-entropy balance, this synthetic glycopeptide has a binding affinity slightly higher than that of its natural counterpart. When conjugated with gold nanoparticles, the vaccine candidate stimulates the formation of specific anti-MUC1 IgG antibodies in mice and shows efficacy comparable to that of the natural derivative. The antibodies also exhibit cross-reactivity to selectively target, for example, human breast cancer cells. This investigation relied on numerous analytical (e.g., NMR spectroscopy and X-ray crystallography) and biophysical techniques and molecular dynamics simulations to characterize the antigen-antibody interactions. This workflow streamlines the synthetic process, saves time, and reduces the need for extensive, animal-intensive immunization procedures. These advances underscore the promise of structure-based rational design in the advance of cancer vaccine development.
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Affiliation(s)
- Iris A. Bermejo
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
| | - Ana Guerreiro
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa 1649-028, Portugal
| | - Ander Eguskiza
- Department
of Biotechnology, University of Verona, Verona 37134, Italy
| | - Nuria Martínez-Sáez
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
- Departamento
de Tecnología y Química Farmacéuticas, Universidad de Navarra, Pamplona 31008, Spain
| | - Foivos S. Lazaris
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
| | - Alicia Asín
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
| | - Víctor J. Somovilla
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
| | - Ismael Compañón
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
| | - Tom K. Raju
- Angiogenesis
Group, Oncology Area, Center for Biomedical
Research of La Rioja (CIBIR), Logroño 26006, Spain
| | - Srdan Tadic
- Angiogenesis
Group, Oncology Area, Center for Biomedical
Research of La Rioja (CIBIR), Logroño 26006, Spain
| | - Pablo Garrido
- Angiogenesis
Group, Oncology Area, Center for Biomedical
Research of La Rioja (CIBIR), Logroño 26006, Spain
| | - Josune García-Sanmartín
- Angiogenesis
Group, Oncology Area, Center for Biomedical
Research of La Rioja (CIBIR), Logroño 26006, Spain
| | - Vincenzo Mangini
- Center
for
Biomolecular Nanotechnologies@UniLe, Istituto
Italiano di Tecnologia (IIT), Arnesano, Lecce 73010, Italy
| | - Ana S. Grosso
- Applied
Molecular Biosciences Unit UCIBIO, Department of Chemistry, NOVA School of Science and Technology, Caparica 2829-516, Portugal
- Associate
Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Caparica 2829-516, Portugal
| | - Filipa Marcelo
- Applied
Molecular Biosciences Unit UCIBIO, Department of Chemistry, NOVA School of Science and Technology, Caparica 2829-516, Portugal
- Associate
Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Caparica 2829-516, Portugal
| | - Alberto Avenoza
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
| | - Jesús H. Busto
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
| | - Fayna García-Martín
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
| | - Ramón Hurtado-Guerrero
- Institute
of Biocomputation and Physics of Complex Systems, University of Zaragoza, Zaragoza 50018, Spain
- Copenhagen
Center for Glycomics, Department of Cellular and Molecular Medicine,
Faculty of Health Sciences, University of
Copenhagen, Copenhagen 2200, Denmark
- Fundación
ARAID, Zaragoza 50018, Spain
| | - Jesús M. Peregrina
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
| | - Gonçalo J. L. Bernardes
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa 1649-028, Portugal
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Cambridge CB2 1EW, U.K.
| | - Alfredo Martínez
- Angiogenesis
Group, Oncology Area, Center for Biomedical
Research of La Rioja (CIBIR), Logroño 26006, Spain
| | - Roberto Fiammengo
- Department
of Biotechnology, University of Verona, Verona 37134, Italy
- Center
for
Biomolecular Nanotechnologies@UniLe, Istituto
Italiano di Tecnologia (IIT), Arnesano, Lecce 73010, Italy
| | - Francisco Corzana
- Department
of Chemistry and Instituto de Investigación en Química
de la Universidad de La Rioja (IQUR), Universidad
de La Rioja, Logroño 26006, Spain
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2
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Pimenta J, Girão MC, Guerreiro A, Escrevente R, Duro E. Lymph node ratio prognostic impact in rectal cancer patients after neoadjuvant chemoradiotherapy and curative resection. European Journal of Surgical Oncology 2023. [DOI: 10.1016/j.ejso.2022.11.377] [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: 02/25/2023]
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3
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Dunsmore L, Navo CD, Becher J, de Montes EG, Guerreiro A, Hoyt E, Brown L, Zelenay V, Mikutis S, Cooper J, Barbieri I, Lawrinowitz S, Siouve E, Martin E, Ruivo PR, Rodrigues T, da Cruz FP, Werz O, Vassiliou G, Ravn P, Jiménez-Osés G, Bernardes GJL. Controlled masking and targeted release of redox-cycling ortho-quinones via a C-C bond-cleaving 1,6-elimination. Nat Chem 2022; 14:754-765. [PMID: 35764792 PMCID: PMC9252919 DOI: 10.1038/s41557-022-00964-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [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: 02/04/2021] [Accepted: 05/03/2022] [Indexed: 12/15/2022]
Abstract
Natural products that contain ortho-quinones show great potential as anticancer agents but have been largely discarded from clinical development because their redox-cycling behaviour results in general systemic toxicity. Here we report conjugation of ortho-quinones to a carrier, which simultaneously masks their underlying redox activity. C-benzylation at a quinone carbonyl forms a redox-inactive benzyl ketol. Upon a specific enzymatic trigger, an acid-promoted, self-immolative C-C bond-cleaving 1,6-elimination mechanism releases the redox-active hydroquinone inside cells. By using a 5-lipoxygenase modulator, β-lapachone, we created cathepsin-B-cleavable quinone prodrugs. We applied the strategy for intracellular release of β-lapachone upon antibody-mediated delivery. Conjugation of protected β-lapachone to Gem-IgG1 antibodies, which contain the variable region of gemtuzumab, results in homogeneous, systemically non-toxic and conditionally stable CD33+-specific antibody-drug conjugates with in vivo efficacy against a xenograft murine model of acute myeloid leukaemia. This protection strategy could allow the use of previously overlooked natural products as anticancer agents, thus extending the range of drugs available for next-generation targeted therapeutics.
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Affiliation(s)
- Lavinia Dunsmore
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Claudio D Navo
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio-Bizkaia, Spain
| | - Julie Becher
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | | | - Ana Guerreiro
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Emily Hoyt
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Libby Brown
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
- Biologics Engineering, R&D, AstraZeneca, Cambridge, UK
| | | | - Sigitas Mikutis
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Jonathan Cooper
- Wellcome-MRC Cambridge Stem Cell Institute, Department of Haematology, University of Cambridge, Cambridge, UK
| | - Isaia Barbieri
- Division of Cellular and Molecular Pathology, Department of Pathology, University of Cambridge, Cambridge, UK
| | - Stefanie Lawrinowitz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - Elise Siouve
- Biologics Engineering, R&D, AstraZeneca, Cambridge, UK
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Esther Martin
- Biologics Engineering, R&D, AstraZeneca, Cambridge, UK
| | - Pedro R Ruivo
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Tiago Rodrigues
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Filipa P da Cruz
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - George Vassiliou
- Wellcome-MRC Cambridge Stem Cell Institute, Department of Haematology, University of Cambridge, Cambridge, UK
| | - Peter Ravn
- Biologics Engineering, R&D, AstraZeneca, Cambridge, UK
- Department of Biotherapeutic Discovery, H. Lundbeck A/S, Valby, Denmark
| | - Gonzalo Jiménez-Osés
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio-Bizkaia, Spain.
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain.
| | - Gonçalo J L Bernardes
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal.
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4
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Quintas J, Guerreiro A, de Carvalho MJL, Duarte V, Pedro AR, Gama AF, Keygnaert I, Dias S. The Implication of the First Wave of COVID-19 on Mental Health: Results from a Portuguese Sample. Int J Environ Res Public Health 2022; 19:ijerph19116489. [PMID: 35682079 PMCID: PMC9180313 DOI: 10.3390/ijerph19116489] [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] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/14/2022] [Accepted: 05/23/2022] [Indexed: 12/04/2022]
Abstract
The social conditions created by the COVID-19 pandemic had a great potential to affect the mental health of individuals. Meta-analyses indicate a rise in these problems in these periods among general populations, patients and health professionals, even with substantial heterogeneous results. This paper examines mental health impacts specifically during the first wave of COVID-19. An online survey was conducted with a Portuguese convenience sample (N = 1.062) comprising questions about substance use, perceived stress, post-traumatic stress disorder and self-damage behaviors. The results concerning substance use show an extensive use of medication to sleep or calm down, especially among women and older respondents, a small percentage of alcohol consumers with a high pattern of use and less frequent cannabis consumption, even with a quarter of users who began only in the COVID-19 period. The rates of perceived stress and PTSD were higher compared with international prevalence estimations during the pandemic conditions. Both correlated measures were worse for women and young people. Another problematic issue was the rate of suicidal ideation, with a relevant proportion of starters during this period. These data reinforce the need to promote access to mental health services.
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Affiliation(s)
- Jorge Quintas
- CJS—Interdisciplinary Research Centre on Crime, Justice and Security, School of Criminology, Faculty of Law, University of Porto, 4050-123 Porto, Portugal;
- Correspondence:
| | - Ana Guerreiro
- CJS—Interdisciplinary Research Centre on Crime, Justice and Security, School of Criminology, Faculty of Law, University of Porto, 4050-123 Porto, Portugal;
- Department of Social and Behavioral Sciences, University of Maia (UMAIA), 4475-690 Maia, Portugal;
| | - Maria João Leote de Carvalho
- NOVA School of Social Sciences and Humanities (NOVA FCSH), 1069-061 Lisbon, Portugal;
- CICS.NOVA—Interdisciplinary Centre of Social Sciences, 1099-085 Lisbon, Portugal
| | - Vera Duarte
- Department of Social and Behavioral Sciences, University of Maia (UMAIA), 4475-690 Maia, Portugal;
- CICS.NOVA—Interdisciplinary Centre of Social Sciences, 1099-085 Lisbon, Portugal
| | - Ana Rita Pedro
- Public Health Research Centre, NOVA National School of Public Health, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal; (A.R.P.); (A.F.G.); (S.D.)
- Comprehensive Health Research Centre (CHRC), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal
| | - Ana Filipa Gama
- Public Health Research Centre, NOVA National School of Public Health, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal; (A.R.P.); (A.F.G.); (S.D.)
- Comprehensive Health Research Centre (CHRC), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal
| | - Inês Keygnaert
- Department of Public Health and Primary Care, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium;
- WHO Collaborating Centre: International Centre for Reproductive Health (ICRH), Centre for Social Studies on Migration and Refugees (CESSMIR), 9000 Ghent, Belgium
| | - Sónia Dias
- Public Health Research Centre, NOVA National School of Public Health, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal; (A.R.P.); (A.F.G.); (S.D.)
- Comprehensive Health Research Centre (CHRC), Universidade NOVA de Lisboa, 1150-082 Lisbon, Portugal
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5
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Ferhati X, Salas-Cubero M, Garrido P, García-Sanmartín J, Guerreiro A, Avenoza A, Busto JH, Peregrina JM, Martínez A, Jiménez-Moreno E, Bernardes GJL, Corzana F. Bioorthogonal Self-Immolative Linker Based on Grob Fragmentation. Org Lett 2021; 23:8580-8584. [PMID: 34694118 PMCID: PMC8576835 DOI: 10.1021/acs.orglett.1c03299] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
![]()
A self-immolative
bioorthogonal conditionally cleavable linker
based on Grob fragmentation is described. It is derived from 1,3-aminocyclohexanols
and allows the release of sulfonate-containing compounds in aqueous
media. Modulation of the amine pKa promotes
fragmentation even at slightly acidic pH, a common feature of several
tumor environments. The Grob fragmentation can also occur under physiological
conditions in living cells, highlighting the potential bioorthogonal
applicability of this reaction.
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Affiliation(s)
- Xhenti Ferhati
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Marina Salas-Cubero
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Pablo Garrido
- Angiogenesis Group, Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain
| | - Josune García-Sanmartín
- Angiogenesis Group, Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain
| | - Ana Guerreiro
- Instituto de Medicina Molecular Joao Lobo Antunes, Faculdade de Medicina de Universidad de Lisboa, 1649-028 Lisboa, Portugal
| | - Alberto Avenoza
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Jesús H Busto
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Jesús M Peregrina
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Alfredo Martínez
- Angiogenesis Group, Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain
| | - Ester Jiménez-Moreno
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular Joao Lobo Antunes, Faculdade de Medicina de Universidad de Lisboa, 1649-028 Lisboa, Portugal.,Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Francisco Corzana
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
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6
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Conde J, Pumroy RA, Baker C, Rodrigues T, Guerreiro A, Sousa BB, Marques MC, de Almeida BP, Lee S, Leites EP, Picard D, Samanta A, Vaz SH, Sieglitz F, Langini M, Remke M, Roque R, Weiss T, Weller M, Liu Y, Han S, Corzana F, Morais VA, Faria C, Carvalho T, Filippakopoulos P, Snijder B, Barbosa-Morais NL, Moiseenkova-Bell VY, Bernardes GJL. Allosteric Antagonist Modulation of TRPV2 by Piperlongumine Impairs Glioblastoma Progression. ACS Cent Sci 2021; 7:868-881. [PMID: 34079902 PMCID: PMC8161495 DOI: 10.1021/acscentsci.1c00070] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Indexed: 05/04/2023]
Abstract
The use of computational tools to identify biological targets of natural products with anticancer properties and unknown modes of action is gaining momentum. We employed self-organizing maps to deconvolute the phenotypic effects of piperlongumine (PL) and establish a link to modulation of the human transient receptor potential vanilloid 2 (hTRPV2) channel. The structure of the PL-bound full-length rat TRPV2 channel was determined by cryo-EM. PL binds to a transient allosteric pocket responsible for a new mode of anticancer activity against glioblastoma (GBM) in which hTRPV2 is overexpressed. Calcium imaging experiments revealed the importance of Arg539 and Thr522 residues on the antagonistic effect of PL and calcium influx modulation of the TRPV2 channel. Downregulation of hTRPV2 reduces sensitivity to PL and decreases ROS production. Analysis of GBM patient samples associates hTRPV2 overexpression with tumor grade, disease progression, and poor prognosis. Extensive tumor abrogation and long term survival was achieved in two murine models of orthotopic GBM by formulating PL in an implantable scaffold/hydrogel for sustained local therapy. Furthermore, in primary tumor samples derived from GBM patients, we observed a selective reduction of malignant cells in response to PL ex vivo. Our results establish a broadly applicable strategy, leveraging data-motivated research hypotheses for the discovery of novel means tackling cancer.
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Affiliation(s)
- João Conde
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Ruth A. Pumroy
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Charlotte Baker
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Tiago Rodrigues
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Ana Guerreiro
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Bárbara B. Sousa
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Marta C. Marques
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Bernardo P. de Almeida
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Sohyon Lee
- Institute
of Molecular Systems Biology, ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Elvira P. Leites
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Daniel Picard
- Department
of Pediatric Neuro-Oncogenomics, DKFZ, Heidelberg 69120, Germany
- Department of Pediatric Neuro-Oncogenomics, DKTK, Essen D-45147, Germany
- Department
of Pediatric Oncology, Hematology, and Clinical Immunology, Medical
Faculty, University Hospital Düsseldorf, Düsseldorf 40225, Germany
| | - Amrita Samanta
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Sandra H. Vaz
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Florian Sieglitz
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Maike Langini
- Department
of Pediatric Neuro-Oncogenomics, DKFZ, Heidelberg 69120, Germany
- Department of Pediatric Neuro-Oncogenomics, DKTK, Essen D-45147, Germany
- Department
of Pediatric Oncology, Hematology, and Clinical Immunology, Medical
Faculty, University Hospital Düsseldorf, Düsseldorf 40225, Germany
| | - Marc Remke
- Department
of Pediatric Neuro-Oncogenomics, DKFZ, Heidelberg 69120, Germany
- Department of Pediatric Neuro-Oncogenomics, DKTK, Essen D-45147, Germany
- Department
of Pediatric Oncology, Hematology, and Clinical Immunology, Medical
Faculty, University Hospital Düsseldorf, Düsseldorf 40225, Germany
| | - Rafael Roque
- Laboratório
de Neuropatologia, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte (CHLN) EPE, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Tobias Weiss
- Department
of Neurology and Brain Tumour Center, University
Hospital Zürich and University of Zurich, Rämistrasse 100, 8091 Zürich, Switzerland
| | - Michael Weller
- Department
of Neurology and Brain Tumour Center, University
Hospital Zürich and University of Zurich, Rämistrasse 100, 8091 Zürich, Switzerland
| | - Yuhang Liu
- Discovery
Sciences, Worldwide Research and Development, Pfizer Inc., Eastern Point Road, Groton, Connecticut 06340, United States
| | - Seungil Han
- Discovery
Sciences, Worldwide Research and Development, Pfizer Inc., Eastern Point Road, Groton, Connecticut 06340, United States
| | - Francisco Corzana
- Departamento
de Química, Universidad de La Rioja, 26006 Logroño, Spain
| | - Vanessa A. Morais
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Cláudia
C. Faria
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
- Department
of Neurosurgery, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte (CHULN) EPE, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Tânia Carvalho
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Panagis Filippakopoulos
- Structural
Genomics Consortium, Oxford University, Old Road Campus Research Building,
Roosevelt Drive, OX3 7DQ Oxford, United Kingdom
| | - Berend Snijder
- Institute
of Molecular Systems Biology, ETH Zürich, Otto-Stern-Weg 3, 8093 Zürich, Switzerland
| | - Nuno L. Barbosa-Morais
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Vera Y. Moiseenkova-Bell
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- E-mail:
| | - Gonçalo J. L. Bernardes
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield Road, CB2 1EW Cambridge, United Kingdom
- E-mail: ;
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7
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Matos MJ, Brown L, Bernardim B, Guerreiro A, Jiménez-Osés G, Bernardes GJL. Sequential dual site-selective protein labelling enabled by lysine modification. Bioorg Med Chem 2020; 28:115783. [PMID: 33007561 DOI: 10.1016/j.bmc.2020.115783] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 02/07/2023]
Abstract
Methods that allow for chemical site-selective dual protein modification are scarce. Here, we provide proof-of-concept for the orthogonality and compatibility of a method for regioselective lysine modification with strategies for protein modification at cysteine and genetically encoded ketone-tagged amino acids. This sequential, orthogonal approach was applied to albumin and a therapeutic antibody to create functional dual site-selectively labelled proteins.
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Affiliation(s)
- Maria J Matos
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK
| | - Libby Brown
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK
| | - Barbara Bernardim
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Gonzalo Jiménez-Osés
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160 Derio, Spain
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK; Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal.
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8
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Li H, Conde J, Guerreiro A, Bernardes GJL. Tetrazine Carbon Nanotubes for Pretargeted In Vivo “Click‐to‐Release” Bioorthogonal Tumour Imaging. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- He Li
- Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - João Conde
- Instituto de Medicina Molecular Faculdade de Medicina da Universidade de Lisboa Av. Prof. Egas Moniz 1649-028 Lisboa Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular Faculdade de Medicina da Universidade de Lisboa Av. Prof. Egas Moniz 1649-028 Lisboa Portugal
| | - Gonçalo J. L. Bernardes
- Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
- Instituto de Medicina Molecular Faculdade de Medicina da Universidade de Lisboa Av. Prof. Egas Moniz 1649-028 Lisboa Portugal
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9
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Li H, Conde J, Guerreiro A, Bernardes GJL. Rücktitelbild: Tetrazine Carbon Nanotubes for Pretargeted In Vivo “Click‐to‐Release” Bioorthogonal Tumour Imaging (Angew. Chem. 37/2020). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- He Li
- Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - João Conde
- Instituto de Medicina Molecular Faculdade de Medicina da Universidade de Lisboa Av. Prof. Egas Moniz 1649-028 Lisboa Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular Faculdade de Medicina da Universidade de Lisboa Av. Prof. Egas Moniz 1649-028 Lisboa Portugal
| | - Gonçalo J. L. Bernardes
- Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
- Instituto de Medicina Molecular Faculdade de Medicina da Universidade de Lisboa Av. Prof. Egas Moniz 1649-028 Lisboa Portugal
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10
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Li H, Conde J, Guerreiro A, Bernardes GJL. Back Cover: Tetrazine Carbon Nanotubes for Pretargeted In Vivo “Click‐to‐Release” Bioorthogonal Tumour Imaging (Angew. Chem. Int. Ed. 37/2020). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/anie.202010067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- He Li
- Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - João Conde
- Instituto de Medicina Molecular Faculdade de Medicina da Universidade de Lisboa Av. Prof. Egas Moniz 1649-028 Lisboa Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular Faculdade de Medicina da Universidade de Lisboa Av. Prof. Egas Moniz 1649-028 Lisboa Portugal
| | - Gonçalo J. L. Bernardes
- Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
- Instituto de Medicina Molecular Faculdade de Medicina da Universidade de Lisboa Av. Prof. Egas Moniz 1649-028 Lisboa Portugal
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11
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Seixas JD, Sousa BB, Marques MC, Guerreiro A, Traquete R, Rodrigues T, Albuquerque IS, Sousa MFQ, Lemos AR, Sousa PMF, Bandeiras TM, Wu D, Doyle SK, Robinson CV, Koehler AN, Corzana F, Matias PM, Bernardes GJL. Structural and biophysical insights into the mode of covalent binding of rationally designed potent BMX inhibitors. RSC Chem Biol 2020; 1:251-262. [PMID: 34458764 PMCID: PMC8341910 DOI: 10.1039/d0cb00033g] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 08/21/2020] [Indexed: 12/14/2022] Open
Abstract
The bone marrow tyrosine kinase in chromosome X (BMX) is pursued as a drug target because of its role in various pathophysiological processes. We designed BMX covalent inhibitors with single-digit nanomolar potency with unexploited topological pharmacophore patterns. Importantly, we reveal the first X-ray crystal structure of covalently inhibited BMX at Cys496, which displays key interactions with Lys445, responsible for hampering ATP catalysis and the DFG-out-like motif, typical of an inactive conformation. Molecular dynamic simulations also showed this interaction for two ligand/BMX complexes. Kinome selectivity profiling showed that the most potent compound is the strongest binder, displays intracellular target engagement in BMX-transfected cells with two-digit nanomolar inhibitory potency, and leads to BMX degradation PC3 in cells. The new inhibitors displayed anti-proliferative effects in androgen-receptor positive prostate cancer cells that where further increased when combined with known inhibitors of related signaling pathways, such as PI3K, AKT and Androgen Receptor. We expect these findings to guide development of new selective BMX therapeutic approaches. We identified potent, functionalisable BMX inhibitors and revealed their covalent mode of binding to BMX by X-ray crystallography.![]()
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Affiliation(s)
- João D Seixas
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Bárbara B Sousa
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal .,Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa Av. da República EAN 2780-157 Oeiras Portugal
| | - Marta C Marques
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Rui Traquete
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Tiago Rodrigues
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Inês S Albuquerque
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Marcos F Q Sousa
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa Av. da República EAN 2780-157 Oeiras Portugal.,IBET - Instituto de Biologia Experimental e Tecnológica Av. da República EAN 2780-157 Oeiras Portugal
| | - Ana R Lemos
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa Av. da República EAN 2780-157 Oeiras Portugal.,IBET - Instituto de Biologia Experimental e Tecnológica Av. da República EAN 2780-157 Oeiras Portugal
| | - Pedro M F Sousa
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa Av. da República EAN 2780-157 Oeiras Portugal.,IBET - Instituto de Biologia Experimental e Tecnológica Av. da República EAN 2780-157 Oeiras Portugal
| | - Tiago M Bandeiras
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa Av. da República EAN 2780-157 Oeiras Portugal.,IBET - Instituto de Biologia Experimental e Tecnológica Av. da República EAN 2780-157 Oeiras Portugal
| | - Di Wu
- Department of Chemistry, University of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Shelby K Doyle
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology Cambridge MA 02142 USA
| | - Carol V Robinson
- Department of Chemistry, University of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Angela N Koehler
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology Cambridge MA 02142 USA
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química 26006 Logroño Spain
| | - Pedro M Matias
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa Av. da República EAN 2780-157 Oeiras Portugal.,IBET - Instituto de Biologia Experimental e Tecnológica Av. da República EAN 2780-157 Oeiras Portugal
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal .,Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
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12
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Li H, Conde J, Guerreiro A, Bernardes GJL. Tetrazine Carbon Nanotubes for Pretargeted In Vivo "Click-to-Release" Bioorthogonal Tumour Imaging. Angew Chem Int Ed Engl 2020; 59:16023-16032. [PMID: 32558207 PMCID: PMC7540421 DOI: 10.1002/anie.202008012] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Indexed: 12/26/2022]
Abstract
The bioorthogonal inverse‐electron‐demand Diels–Alder (IEDDA) cleavage reaction between tetrazine and trans‐cyclooctene (TCO) is a powerful way to control the release of bioactive agents and imaging probes. In this study, a pretargeted activation strategy using single‐walled carbon nanotubes (SWCNTs) that bear tetrazines (TZ@SWCNTs) and a TCO‐caged molecule was used to deliver active effector molecules. To optimize a turn‐on signal by using in vivo fluorescence imaging, we developed a new fluorogenic near‐infrared probe that can be activated by bioorthogonal chemistry and image tumours in mice by caging hemicyanine with TCO (tHCA). With our pretargeting strategy, we have shown selective doxorubicin prodrug activation and instantaneous fluorescence imaging in living cells. By combining a tHCA probe and a pretargeted bioorthogonal approach, real‐time, non‐invasive tumour visualization with a high target‐to‐background ratio was achieved in a xenograft mice tumour model. The combined advantages of enhanced stability, kinetics and biocompatibility, and the superior pharmacokinetics of tetrazine‐functionalised SWCNTs could allow application of targeted bioorthogonal decaging approaches with minimal off‐site activation of fluorophore/drug.
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Affiliation(s)
- He Li
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - João Conde
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.,Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
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13
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Balsa J, Félix I, Cláudio AP, Carmo MB, Silva ICE, Guerreiro A, Guedes M, Henriques A, Guerreiro MP. Usability of an Intelligent Virtual Assistant for Promoting Behavior Change and Self-Care in Older People with Type 2 Diabetes. J Med Syst 2020; 44:130. [PMID: 32533367 DOI: 10.1007/s10916-020-01583-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 12/15/2019] [Accepted: 05/07/2020] [Indexed: 01/09/2023]
Abstract
In the context of the VASelfCare project, we developed an application prototype of an intelligent anthropomorphic virtual assistant. Designed as a relational agent, the virtual assistant has the role of supporting older people with Type 2 Diabetes Mellitus (T2D) in medication adherence and lifestyle changes. Our paper has two goals: describing the essentials of this prototype, and reporting on usability evaluation. We describe the general architecture of the prototype, including the graphical component, and focus on its main feature: the incorporation, in the way the dialogue flows, of Behavior Change Techniques, identified through a theoretical framework, the Behaviour Change Wheel. Usability was experimentally evaluated in field tests in a purposive sample of 20 participants (11 older adults with T2D and 9 experts). The Portuguese version of the System Usability Scale was employed, supplemented with qualitative data from open questions, diaries, digital notes and telephone follow-ups. The aggregated mean SUS score was 73,75 (SD 13,31), which corresponds to a borderline rating of excellent. Textual data were content analyzed and will be prioritized to further improve usability.
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Affiliation(s)
- João Balsa
- Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal.
| | - Isa Félix
- Unidade de Investigação e Desenvolvimento em Enfermagem (ui&de), Escola Superior de Enfermagem de Lisboa, Lisbon, Portugal
| | - Ana Paula Cláudio
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Maria Beatriz Carmo
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Isabel Costa E Silva
- Unidade de Investigação e Desenvolvimento em Enfermagem (ui&de), Escola Superior de Enfermagem de Lisboa, Lisbon, Portugal
| | - Ana Guerreiro
- Escola Superior de Enfermagem de Lisboa, Lisbon, Portugal
| | - Maria Guedes
- Escola Superior de Enfermagem de Lisboa, Lisbon, Portugal
| | - Adriana Henriques
- Unidade de Investigação e Desenvolvimento em Enfermagem (ui&de), Escola Superior de Enfermagem de Lisboa, Lisbon, Portugal.,Faculdade de Medicina da Universidade de Lisboa, Instituto de Saúde Ambiental (ISAMB), Lisbon, Portugal
| | - Mara Pereira Guerreiro
- Unidade de Investigação e Desenvolvimento em Enfermagem (ui&de), Escola Superior de Enfermagem de Lisboa, Lisbon, Portugal.,Centro de Investigação Interdisciplinar Egas Moniz, Instituto Universitário Egas Moniz, Monte de Caparica, Almada, Portugal
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14
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Romão VC, Ávila-Ribeiro P, Gonçalves MJ, Cruz-Machado AR, Guerreiro A, Teixeira V, Valido A, Silva-Dinis J, Vieira-Sousa E, Saavedra MJ, Leite E, Tato Marinho R, Fonseca JE. AB1149 POOR RESPONSE TO HEPATITIS B VACCINATION IN RHEUMATIC PATIENTS TREATED WITH BIOLOGIC THERAPY – IMPLICATIONS FOR CLINICAL PRACTICE. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Hepatitis B virus (HBV) vaccination is recommended for rheumatic patients starting biologic therapy. There is some evidence that HBV vaccination is effective in patients under conventional disease modifying anti-rheumatic drugs (DMARDs), but it is currently unclear whether this also applies to biologics.Objectives:To assess the efficacy and safety of HBV vaccination in patients with rheumatic diseases treated with biologics.Methods:We included patients with any inflammatory rheumatic diseases treated with any biologic, who were negative for anti-HBs and anti-HBc and had never been vaccinated for HBV. Engerix B® was administered at 0, 1 and 6 months and anti-HBs was re-assessed ≥1 month after last dose. Response was defined as anti-HBs>10IU/L and compared against healthy controls (HC) undergoing Occupational Health immunization. Disease flare was evaluated before and until at least 1 month post-vaccination. We recorded serious adverse events (SAE) and immune-related disorders not previously present.Results:We included 67 patients, most treated with TNF inhibitors (TNFi), and 70 HC (Table 1). Most patients were taking concomitant DMARDs (69%) and were in remission/low disease activity (59%). Only 20 patients (30%) had a positive response to vaccination, in comparison to 68 HC (97%, p<0.001). Mean post-vaccination anti-HBs titre was significantly lower in responding patients than HC (569 ± 772 vs 1316 ± 811U/L, p<0.001). Responders diagnoses were RA (n=8 [25%]), PsA (n=7 [39%]), AS (n=4 [33%]) and IBD-associated SpA (n=1[100%]). Response was seen in 19/53 patients treated with TNFi (36%), but only 1/14 (7%) of patients treated with non-TNFi (p=0.037). Importantly, some responders had to temporarily interrupt biologic therapy due to other intercurrences for at least one administration. No clinical or demographic variables were associated with response, including age and disease activity. Fourteen patients (21%) experienced disease flares, of which 7 were mild and did not require therapy adjustment; 3 patients required minor treatment/dose adjustments; 4 patients had secondary failures that led to switches. There were 3 SAE (acute diverticulitis; abdominal infection; atrial fibrillation and urinary infection) 1-4 months after 1st/2nddose, deemed not to be related to vaccination. One RA patient on infliximab had bilateral uveitis 2 months after the 1stvaccine dose, which resolved with topical therapy.Table 1.Baseline characteristics of study participants.Patients (n=67)Controls (n=70)pAge (years)56 ± 946 ± 9<0.001Female (%)40 (60)62 (89)<0.001Diagnosis (%)RA32 (48)PsA / AS18 (27) / 13 (19)Other4 (6)Disease duration (years)17 ± 10Biologic (%)TNF-inhibitor53 (79)Tocilizumab / Abatacept6 (9) / 1 (1)Rituximab / Belimumab2 (3) / 4 (6)Anakinra1 (1)Conventional DMARDs (%)MTX / LEF39 (58) / 1 (1)SSZ / Other6 (9) / 3 (4)None21 (31)Prednisolone (%) / Dose (mg)29 (43) / 5.6 ± 2.1DAS283.1 ± 1.4ASDAS2.2 ± 1.4Conclusion:In this study, HBV vaccination response was poor and lower in rheumatic patients treated with biologic therapy than in healthy adults. Vaccination was overall safe but there were 4 severe flares and 3 SAE that lead to treatment switch/interruption, although causal association is difficult to establish. Our data reinforce the recommendation for HBV vaccination prior to starting biologic therapy, possibly even as soon as the diagnosis is established. Alternative HBV vaccination strategies should be investigated in patients already treated with biologics.Disclosure of Interests:Vasco C Romão: None declared, Pedro Ávila-Ribeiro Grant/research support from: Novartis, Maria João Gonçalves: None declared, Ana Rita Cruz-Machado: None declared, André Guerreiro: None declared, Vítor Teixeira: None declared, Ana Valido: None declared, Joana Silva-Dinis: None declared, Elsa Vieira-Sousa: None declared, Maria João Saavedra: None declared, Ema Leite: None declared, Rui Tato Marinho: None declared, Joao Eurico Fonseca: None declared
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15
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Bermejo IA, Navo CD, Castro-López J, Guerreiro A, Jiménez-Moreno E, Sánchez Fernández EM, García-Martín F, Hinou H, Nishimura SI, García Fernández JM, Mellet CO, Avenoza A, Busto JH, Bernardes GJL, Hurtado-Guerrero R, Peregrina JM, Corzana F. Synthesis, conformational analysis and in vivo assays of an anti-cancer vaccine that features an unnatural antigen based on an sp 2-iminosugar fragment. Chem Sci 2020; 11:3996-4006. [PMID: 34122869 PMCID: PMC8152572 DOI: 10.1039/c9sc06334j] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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] [Indexed: 01/03/2023] Open
Abstract
The Tn antigen (GalNAc-α-1-O-Thr/Ser) is a well-known tumor-associated carbohydrate determinant. The use of glycopeptides that incorporate this structure has become a significant and promising niche of research owing to their potential use as anticancer vaccines. Herein, the conformational preferences of a glycopeptide with an unnatural Tn antigen, characterized by a threonine decorated with an sp2-iminosugar-type α-GalNAc mimic, have been studied both in solution, by combining NMR spectroscopy and molecular dynamics simulations, and in the solid state bound to an anti-mucin-1 (MUC1) antibody, by X-ray crystallography. The Tn surrogate can mimic the main conformer sampled by the natural antigen in solution and exhibits high affinity towards anti-MUC1 antibodies. Encouraged by these data, a cancer vaccine candidate based on this unnatural glycopeptide and conjugated to the carrier protein Keyhole Limpet Hemocyanin (KLH) has been prepared and tested in mice. Significantly, the experiments in vivo have proved that this vaccine elicits higher levels of specific anti-MUC1 IgG antibodies than the analog that bears the natural Tn antigen and that the elicited antibodies recognize human breast cancer cells with high selectivity. Altogether, we compile evidence to confirm that the presentation of the antigen, both in solution and in the bound state, plays a critical role in the efficacy of the designed cancer vaccines. Moreover, the outcomes derived from this vaccine prove that there is room for exploring further adjustments at the carbohydrate level that could contribute to designing more efficient cancer vaccines. An anti-cancer vaccine based on an unnatural antigen with an sp2-iminosugar fragment.![]()
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Affiliation(s)
- Iris A Bermejo
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química E-26006 Logroño Spain
| | - Claudio D Navo
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química E-26006 Logroño Spain .,CIC BioGUNE, Bizkaia Technology Park Building 800 48170 Derio Spain
| | - Jorge Castro-López
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza Zaragoza Spain
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Ester Jiménez-Moreno
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química E-26006 Logroño Spain
| | | | - Fayna García-Martín
- Graduate School and Faculty of Advanced Life Science, Laboratory of Advanced Chemical Biology, Hokkaido University N21 W11 Sapporo 001-0021 Japan
| | - Hiroshi Hinou
- Graduate School and Faculty of Advanced Life Science, Laboratory of Advanced Chemical Biology, Hokkaido University N21 W11 Sapporo 001-0021 Japan
| | - Shin-Ichiro Nishimura
- Graduate School and Faculty of Advanced Life Science, Laboratory of Advanced Chemical Biology, Hokkaido University N21 W11 Sapporo 001-0021 Japan
| | - José M García Fernández
- Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla E-41092 Sevilla Spain
| | - Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla E-41012 Sevilla Spain
| | - Alberto Avenoza
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química E-26006 Logroño Spain
| | - Jesús H Busto
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química E-26006 Logroño Spain
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal.,Department of Chemistry, University of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Ramón Hurtado-Guerrero
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza Zaragoza Spain.,Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, School of Dentistry, University of Copenhagen Copenhagen Denmark.,Fundación ARAID Zaragoza Spain
| | - Jesús M Peregrina
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química E-26006 Logroño Spain
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química E-26006 Logroño Spain
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16
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Ferreira TD, Silva NA, Bertolami O, Gomes C, Guerreiro A. Using numerical methods from nonlocal optics to simulate the dynamics of N-body systems in alternative theories of gravity. Phys Rev E 2020; 101:023301. [PMID: 32168575 DOI: 10.1103/physreve.101.023301] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 01/10/2020] [Indexed: 11/07/2022]
Abstract
The generalized Schrödinger-Newton system of equations with both local and nonlocal nonlinearities is widely used to describe light propagating in nonlinear media under the paraxial approximation. However, its use is not limited to optical systems and can be found to describe a plethora of different physical phenomena, for example, dark matter or alternative theories for gravity. Thus, the numerical solvers developed for studying light propagating under this model can be adapted to address these other phenomena. Indeed, in this work we report the development of a solver for the HiLight simulations platform based on GPGPU supercomputing and the required adaptations for this solver to be used to test the impact of new extensions of the Theory of General Relativity in the dynamics of the systems. In this work we shall analyze theories with nonminimal coupling between curvature and matter. This approach in the study of these new models offers a quick way to validate them since their analytical analysis is difficult. The simulation module, its performance, and some preliminary tests are presented in this paper.
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Affiliation(s)
- Tiago D Ferreira
- Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal.,INESC TEC, Centre of Applied Photonics, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
| | - Nuno A Silva
- Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal.,INESC TEC, Centre of Applied Photonics, Rua do Campo Alegre 687, 4169-007 Porto, Portugal.,Texas Center for Advanced Computing, University of Texas at Austin, Advanced Computing Building (ACB), J.J. Pickle Research Campus, Building 205 10100 Burnet Road (R8700), Austin, Texas 78758-4497, USA
| | - O Bertolami
- Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal.,Centro de Física do Porto, R. Campo Alegre, 4169-007, Porto, Portugal
| | - C Gomes
- Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal.,Centro de Física do Porto, R. Campo Alegre, 4169-007, Porto, Portugal
| | - A Guerreiro
- Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal.,INESC TEC, Centre of Applied Photonics, Rua do Campo Alegre 687, 4169-007 Porto, Portugal.,Texas Center for Advanced Computing, University of Texas at Austin, Advanced Computing Building (ACB), J.J. Pickle Research Campus, Building 205 10100 Burnet Road (R8700), Austin, Texas 78758-4497, USA
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17
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Amorim AL, Guerreiro A, Glitz VA, Coimbra DF, Bortoluzzi AJ, Caramori GF, Braga AL, Neves A, Bernardes GJL, Peralta RA. Synthesis, characterization and photoinduced CO-release by manganese( i) complexes. NEW J CHEM 2020. [DOI: 10.1039/d0nj02260h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Three new photoCORM, two with non two with nonbonding pyridine and one with benzyl group, were synthesised, and their CO-releasing properties evaluated for with regards to their elusive binding mode.
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Affiliation(s)
- André L. Amorim
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Ana Guerreiro
- Instituto de Medicina Molecular
- Faculdade de Medicina
- Universidade de Lisboa
- Avenida Professor Egas Moniz
- Lisboa
| | - Vinícius A. Glitz
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Daniel F. Coimbra
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | | | - Giovanni F. Caramori
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Antonio L. Braga
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Ademir Neves
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Gonçalo J. L. Bernardes
- Instituto de Medicina Molecular
- Faculdade de Medicina
- Universidade de Lisboa
- Avenida Professor Egas Moniz
- Lisboa
| | - Rosely A. Peralta
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
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18
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Santos J, Braz P, Costa A, Costa L, Santos M, Brazão R, Alves J, Lopes I, Guerreiro A, Almeida T. Salt reduction in bread: Is it enough? Preliminary results of a HIA in Portugal. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz187.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Issue
Health Impact Assessment (HIA) is a methodology that aims at assessing the impact of policies in health. A pilot HIA is in progress to kick off the implementation of this methodology in Portugal with the support of the World Health Organization (WHO). In this context, the impact of a nation-wide policy that intends to achieve a maximum of 1 g of salt/100 gr in bread is under assessment.
Description of the issue
In 2017, Portugal approved a protocol between the industry and other stakeholders to gradually decrease the amount of salt in bread, as this is the main source of salt intake. The purpose of this study was to assess the impact in blood pressure from current (1.4 gr) to 1 g (29% reduction) of salt in bread. Data from two different surveys regarding blood pressure and salt intake was gathered. We estimated the decrease in blood pressure with respect to current average values according to sex, age, education and region.
Results
It is expected that a reduction of 29% in salt intake through bread contributes to a general decrease in systolic pressure for normotensive people (from 120.4mmHg to 120.0mmHg, p = 0.85) and hypertensive people (from 151.0mmHg to 150.1mmHg, p = 0.68), although not statistically significant. Older hypertensive individuals (65 to 75 years) are the group with the largest benefit (152.8mmHg to 152.0mmHg) but no statistical difference was found. Disaggregation by sex, region and education also didn’t show any statistical difference.
Lessons
The impact in blood pressure from a 29% reduction in salt intake from bread seems very small. We found no statistical significance between the current and expected values in blood pressure either for total or group stratification. The absence of statistical effect might be due to sample size as our sources only allowed us to work with aggregated data.
Key messages
Quality and access to data is needed to assess impact of policies. to increase effects in blood pressure either salt reduction from bread must be larger or a wider range of products should be considered.
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Affiliation(s)
- J Santos
- Epidemiology, Institute Public Health, Lisbon, Portugal
| | - P Braz
- Epidemiology, Institute Public Health, Lisbon, Portugal
| | - A Costa
- Health Promotion, Institute Public Health, Lisbon, Portugal
| | - L Costa
- Health Promotion, Institute Public Health, Lisbon, Portugal
| | - M Santos
- Nutrition, Institute Public Health, Lisbon, Portugal
| | - R Brazão
- Nutrition, Institute Public Health, Lisbon, Portugal
| | - J Alves
- School of Public Health, Lisbon, Portugal
| | - I Lopes
- DGE, Ministry of Education, Lisbon, Portugal
| | - A Guerreiro
- Public Health, Regional Health Administration, Faro, Portugal
| | - T Almeida
- Health Promotion, Institute Public Health, Lisbon, Portugal
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19
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Costa A, Costa L, Santos J, Braz P, Santos M, Brazão R, Lopes I, Guerreiro A, Alves J, Caldas de Almeida T. Knowledge and Attitude towards the Gradual Reduction of Salt in Bread – an Online Survey. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz186.292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Bread is one of the main sources of salt intake in Portugal. Based on this evidence, a protocol signed between national Health Sector and the Associations of Industrial Bakeries, in 2017, established gradually decrease salt in bread until 2021. This measure also targets schools’ available bread, this should not exceed 1g salt, to end of 2018. A pilot Health Impact Assessment (HIA) aims to assess the potential impact on salt reduction in bread on the eating habits of children (6-18 years) and their families.
Methods
A questionnaire is being performed to assess the effect of this measure. The first version was designed by a panel of 11 experts (content validity), following the plain text principles. A external specialist revised it for facial validity. A pilot was tested. Thereafter, a REDCap online survey of “Knowledge and Attitude towards the Gradual Reduction of Salt in Bread” questionnaire was finalized. The target group is the parents or guardians of children and young persons, of School Clusters in the south of Portugal.
Results
Final online survey totalizes 33 items, divided into four blocks: 1.Knowledge and General literacy data, 2.Domestic Consumption, 3.Scholar consumption and 4.Sociodemographic. An adult responsible for the child/young person should answer the survey. Access is possible through a REDCap link, using computers available in the School Cluster, or other manner suitable for the purpose.
Conclusions
This survey will contribute to the identification of modifiable behaviors related with salt intake. Such evidence may eventually provide the opportunity for new strategies in this area.
Key messages
Health Impact Assessment as a procedure to assess the effects of measures and policies on human health. Questionnaires are a rapid tool to access perceptions, attitudes and knowledge.
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Affiliation(s)
- A Costa
- DPS, National Institute of Health Doutor Ricardo Jorge, Lisbon, Portugal
| | - L Costa
- DPS, National Institute of Health Doutor Ricardo Jorge, Lisbon, Portugal
| | - J Santos
- DEP, National Institute of Health Doutor Ricardo Jorge, Lisbon, Portugal
| | - P Braz
- DEP, National Institute of Health Doutor Ricardo Jorge, Lisbon, Portugal
| | - M Santos
- DAN, National Institute of Health Doutor Ricardo Jorge, Lisbon, Portugal
| | - R Brazão
- DAN, National Institute of Health Doutor Ricardo Jorge, Lisbon, Portugal
| | - I Lopes
- Directorate General of Education, Lisbon, Portugal
| | - A Guerreiro
- Regional Health Administration of the Algarve, Lisbon, Portugal
| | - J Alves
- National School of Public Health (ENSP-NOVA), Lisbon, Portugal
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20
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Marinheiro R, Parreira L, Amador P, Mesquita D, Farinha J, Fonseca M, Esteves A, Pinheiro A, Sousa S, Silva M, Lopes C, Fernandes A, Guerreiro A, Chambel D, Caria R. P3563The influence of circadian patterand obstructive sleep apnean of blood pressure in nocturnal arrhythmias in hypertensive patients. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
There is growing evidence suggesting hypertension is related to the occurrence of arrhythmias. When occurring predominantly during the night, two potential entities commonly present in hypertensive patients could be related with increased arrhythmogenesis: (1) the lack of normal nocturnal dipping of blood pressure (BP) (non-dipping pattern of hypertension) or (2) obstructive sleep apnea (OSA). Thus, nocturnal arrhythmias (NAs) can identify hypertensive patients with OSA and/or non-dipping pattern, both related with adverse outcomes.
Aims
To determine if NAs are related with non-dipping hypertension, OSA or both.
Methods
We studied hypertensive patients who performed ambulatory blood pressure monitoring (ABPM) and also polysomnography and 24-hour Holter monitoring. Non-dipping pattern was considered when nocturnal BP reduction was inferior to 10%. Based on Holter monitoring, NAs were present when atrial fibrillation, frequent premature atrial contractions (PACs) (>30 PACs/hour), runs of >4 consecutive PACs, frequent premature ventricular contractions (PVCs) (>30PVCs/hour) or runs of >4 consecutive PVCs were present predominantly during sleeping hours. During polyssonography, apnoea/hypopnoea index (AHI) and oxygen saturation (SaO2) were analysed. Moderate to severe OSA was considered when AHI >15.
Results
We studied 104 patients [median age 62 (54–70) years, 65% male): 42 (40%) had moderate to severe OSA (median AHI=11 (6–26), mean SaO2=94% (92–95)] and 64 (61%) were non-dippers. NAs occurred in 18 patients (17%) and they were independently associated with AHI (Odds Ratio (OR) for a one unit increase 1.04, 95% confidence interval (CI) 1.01–1.07, p=0.03) but not with SaO2 (OR 0.96, CI 0.78–1.19, p=0.73) nor non-dipping pattern (OR 1.23, CI 0.38–3.98, p=0.72). No interaction was found between OSA and non-dipping hypertension (p=0.35). In patients with dipping pattern (n=40), AHI was higher in NAs patients comparing with no NAs patients (median AHI 29 versus 10, p=0.04), while in those with non-dipping pattern (n=64), AHI was not statistically different between patients with and without NAs (21 versus 11, p=0.12) (figure).
Figure 1
Conclusion
In this population of hypertensive patients, the presence of NAs was associated with OSA severity (i.e AHI), but not with the non-dipping pattern of hypertension. The importance of obstructive events in arrhythmogenesis seemed to be more pronounced in dipping patients, suggesting the abnormal high blood pressure during the night may also have some impact on NAs in non-dipping patients. Overall, our results suggest that OSA screening should be considered when nocturnal arrhythmias are detected in hypertensive patients, but ABPM should not be forgotten since multiple mechanisms can be involved in nocturnal arrhythmogenesis.
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Affiliation(s)
| | - L Parreira
- Hospital Center of Setubal, Setubal, Portugal
| | - P Amador
- Hospital Center of Setubal, Setubal, Portugal
| | - D Mesquita
- Hospital Center of Setubal, Setubal, Portugal
| | - J Farinha
- Hospital Center of Setubal, Setubal, Portugal
| | - M Fonseca
- Hospital Center of Setubal, Setubal, Portugal
| | - A Esteves
- Hospital Center of Setubal, Setubal, Portugal
| | - A Pinheiro
- Hospital Center of Setubal, Setubal, Portugal
| | - S Sousa
- Hospital Center of Setubal, Setubal, Portugal
| | - M Silva
- Hospital Center of Setubal, Setubal, Portugal
| | - C Lopes
- Hospital Center of Setubal, Setubal, Portugal
| | - A Fernandes
- Hospital Center of Setubal, Setubal, Portugal
| | - A Guerreiro
- Hospital Center of Setubal, Setubal, Portugal
| | - D Chambel
- Hospital Center of Setubal, Setubal, Portugal
| | - R Caria
- Hospital Center of Setubal, Setubal, Portugal
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21
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Gomes RA, Almeida C, Correia C, Guerreiro A, Simplício AL, Abreu IA, Alves PG. Exploring the analytical power of the QTOF MS platform to assess monoclonal antibodies quality attributes. PLoS One 2019; 14:e0219156. [PMID: 31291294 PMCID: PMC6619757 DOI: 10.1371/journal.pone.0219156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 06/17/2019] [Indexed: 12/15/2022] Open
Abstract
The biopharmaceutical industry is growing at a fast pace, making nowadays 20% of the pharma market. Within this market, therapeutic monoclonal antibodies (mAbs) are the dominant product class. With the patent expirations, biosimilars and, perhaps more relevant, biobetters, are in fast development. Thus, a comprehensive characterization at the molecular level of antibodies heterogeneity such as glycoforms, post-translational modifications (PTMs) and sequence variations is of utmost importance. Mass spectrometry (MS)-based approaches are undoubtedly the most powerful analytical strategies to monitor and define an array of critical quality attributes on mAbs. In this work, we demonstrate the analytical power of the Q-TOF MS platform for comprehensive and detailed analysis at molecular levels of an in-house produced mAb. This methodology involves minimal sample preparation procedures and provides an extensive collection of valuable data in a short period of time.
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Affiliation(s)
| | | | | | - Ana Guerreiro
- UniMS – Mass Spectrometry Unit, ITQB/IBET, Oeiras, Portugal
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22
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Matos MJ, Navo CD, Hakala T, Ferhati X, Guerreiro A, Hartmann D, Bernardim B, Saar KL, Compañón I, Corzana F, Knowles TPJ, Jiménez‐Osés G, Bernardes GJL. Quaternization of Vinyl/Alkynyl Pyridine Enables Ultrafast Cysteine‐Selective Protein Modification and Charge Modulation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901405] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Maria J. Matos
- Department of ChemistryUniversity of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Claudio D. Navo
- Departamento de QuímicaUniversidad de La RiojaCentro de Investigación en Síntesis Química 26006 Logroño Spain
- CIC bioGUNEBizkaia Technology Park Building 801A 48170 Derio Spain
| | - Tuuli Hakala
- Department of ChemistryUniversity of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Xhenti Ferhati
- Departamento de QuímicaUniversidad de La RiojaCentro de Investigación en Síntesis Química 26006 Logroño Spain
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de MedicinaUniversidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - David Hartmann
- Department of ChemistryUniversity of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Barbara Bernardim
- Department of ChemistryUniversity of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Kadi L. Saar
- Department of ChemistryUniversity of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Ismael Compañón
- Departamento de QuímicaUniversidad de La RiojaCentro de Investigación en Síntesis Química 26006 Logroño Spain
| | - Francisco Corzana
- Departamento de QuímicaUniversidad de La RiojaCentro de Investigación en Síntesis Química 26006 Logroño Spain
| | - Tuomas P. J. Knowles
- Department of ChemistryUniversity of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Gonzalo Jiménez‐Osés
- Departamento de QuímicaUniversidad de La RiojaCentro de Investigación en Síntesis Química 26006 Logroño Spain
- CIC bioGUNEBizkaia Technology Park Building 801A 48170 Derio Spain
| | - Gonçalo J. L. Bernardes
- Department of ChemistryUniversity of Cambridge Lensfield Road CB2 1EW Cambridge UK
- Instituto de Medicina Molecular, Faculdade de MedicinaUniversidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
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23
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Matos MJ, Navo CD, Hakala T, Ferhati X, Guerreiro A, Hartmann D, Bernardim B, Saar KL, Compañón I, Corzana F, Knowles TPJ, Jiménez-Osés G, Bernardes GJL. Quaternization of Vinyl/Alkynyl Pyridine Enables Ultrafast Cysteine-Selective Protein Modification and Charge Modulation. Angew Chem Int Ed Engl 2019; 58:6640-6644. [PMID: 30897271 PMCID: PMC6618083 DOI: 10.1002/anie.201901405] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/11/2019] [Indexed: 12/31/2022]
Abstract
Quaternized vinyl‐ and alkynyl‐pyridine reagents were shown to react in an ultrafast and selective manner with several cysteine‐tagged proteins at near‐stoichiometric quantities. We have demonstrated that this method can effectively create a homogenous antibody–drug conjugate that features a precise drug‐to‐antibody ratio of 2, which was stable in human plasma and retained its specificity towards Her2+ cells. Finally, the developed warhead introduces a +1 charge to the overall net charge of the protein, which enabled us to show that the electrophoretic mobility of the protein may be tuned through the simple attachment of a quaternized vinyl pyridinium reagent at the cysteine residues. We anticipate the generalized use of quaternized vinyl‐ and alkynyl‐pyridine reagents not only for bioconjugation, but also as warheads for covalent inhibition and as tools to profile cysteine reactivity.
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Affiliation(s)
- Maria J Matos
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Claudio D Navo
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006, Logroño, Spain.,CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170, Derio, Spain
| | - Tuuli Hakala
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Xhenti Ferhati
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006, Logroño, Spain
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - David Hartmann
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Barbara Bernardim
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Kadi L Saar
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Ismael Compañón
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006, Logroño, Spain
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006, Logroño, Spain
| | - Tuomas P J Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Gonzalo Jiménez-Osés
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006, Logroño, Spain.,CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170, Derio, Spain
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
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24
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Compañón I, Guerreiro A, Mangini V, Castro-López J, Escudero-Casao M, Avenoza A, Busto JH, Castillón S, Jiménez-Barbero J, Asensio JL, Jiménez-Osés G, Boutureira O, Peregrina JM, Hurtado-Guerrero R, Fiammengo R, Bernardes GJL, Corzana F. Structure-Based Design of Potent Tumor-Associated Antigens: Modulation of Peptide Presentation by Single-Atom O/S or O/Se Substitutions at the Glycosidic Linkage. J Am Chem Soc 2019; 141:4063-4072. [PMID: 30726084 DOI: 10.1021/jacs.8b13503] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
GalNAc-glycopeptides derived from mucin MUC1 are an important class of tumor-associated antigens. α- O-glycosylation forces the peptide to adopt an extended conformation in solution, which is far from the structure observed in complexes with a model anti-MUC1 antibody. Herein, we propose a new strategy for designing potent antigen mimics based on modulating peptide/carbohydrate interactions by means of O → S/Se replacement at the glycosidic linkage. These minimal chemical modifications bring about two key structural changes to the glycopeptide. They increase the carbohydrate-peptide distance and change the orientation and dynamics of the glycosidic linkage. As a result, the peptide acquires a preorganized and optimal structure suited for antibody binding. Accordingly, these new glycopeptides display improved binding toward a representative anti-MUC1 antibody relative to the native antigens. To prove the potential of these glycopeptides as tumor-associated MUC1 antigen mimics, the derivative bearing the S-glycosidic linkage was conjugated to gold nanoparticles and tested as an immunogenic formulation in mice without any adjuvant, which resulted in a significant humoral immune response. Importantly, the mice antisera recognize cancer cells in biopsies of breast cancer patients with high selectivity. This finding demonstrates that the antibodies elicited against the mimetic antigen indeed recognize the naturally occurring antigen in its physiological context. Clinically, the exploitation of tumor-associated antigen mimics may contribute to the development of cancer vaccines and to the improvement of cancer diagnosis based on anti-MUC1 antibodies. The methodology presented here is of general interest for applications because it may be extended to modulate the affinity of biologically relevant glycopeptides toward their receptors.
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Affiliation(s)
- Ismael Compañón
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , 26006 Logroño , Spain
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina , Universidade de Lisboa , Avenida Professor Egas Moniz , 1649-028 Lisboa , Portugal
| | - Vincenzo Mangini
- Center for Biomolecular Nanotechnologies@UniLe , Istituto Italiano di Tecnologia (IIT) , 73010 Arnesano , Lecce , Italy
| | - Jorge Castro-López
- Institute of Biocomputation and Physics of Complex Systems (BIFI) , University of Zaragoza , BIFI-IQFR (CSIC), Fundación ARAID , 50018 Zaragoza , Spain
| | - Margarita Escudero-Casao
- Departament de Química Analítica i Química Orgànica, Facultat de Química , Universitat Rovira i Virgili , 43007 Tarragona , Spain
| | - Alberto Avenoza
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , 26006 Logroño , Spain
| | - Jesús H Busto
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , 26006 Logroño , Spain
| | - Sergio Castillón
- Departament de Química Analítica i Química Orgànica, Facultat de Química , Universitat Rovira i Virgili , 43007 Tarragona , Spain
| | - Jesús Jiménez-Barbero
- CIC bioGUNE , Bizkaia Technology Park , Building 801A , 48170 Derio , Spain.,Ikerbasque , Basque Foundation for Science , Maria Diaz de Haro 13 , 48009 Bilbao , Spain.,Department of Organic Chemistry II, Faculty of Science & Technology , University of the Basque Country , 48940 Leioa , Spain
| | - Juan L Asensio
- Instituto de Química Orgánica General , IQOG-CSIC , 28006 Madrid , Spain
| | - Gonzalo Jiménez-Osés
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , 26006 Logroño , Spain.,CIC bioGUNE , Bizkaia Technology Park , Building 801A , 48170 Derio , Spain
| | - Omar Boutureira
- Departament de Química Analítica i Química Orgànica, Facultat de Química , Universitat Rovira i Virgili , 43007 Tarragona , Spain
| | - Jesús M Peregrina
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , 26006 Logroño , Spain
| | - Ramón Hurtado-Guerrero
- Institute of Biocomputation and Physics of Complex Systems (BIFI) , University of Zaragoza , BIFI-IQFR (CSIC), Fundación ARAID , 50018 Zaragoza , Spain
| | - Roberto Fiammengo
- Center for Biomolecular Nanotechnologies@UniLe , Istituto Italiano di Tecnologia (IIT) , 73010 Arnesano , Lecce , Italy
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular, Faculdade de Medicina , Universidade de Lisboa , Avenida Professor Egas Moniz , 1649-028 Lisboa , Portugal.,Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW Cambridge , U.K
| | - Francisco Corzana
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , 26006 Logroño , Spain
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25
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Amorim AL, Peterle MM, Guerreiro A, Coimbra DF, Heying RS, Caramori GF, Braga AL, Bortoluzzi AJ, Neves A, Bernardes GJL, Peralta RA. Synthesis, characterization and biological evaluation of new manganese metal carbonyl compounds that contain sulfur and selenium ligands as a promising new class of CORMs. Dalton Trans 2019; 48:5574-5584. [DOI: 10.1039/c9dt00616h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Three new manganese carbonyl compounds with heavy atom donors were synthesized and their potential use as photoCORMS was evaluated.
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Affiliation(s)
- André L. Amorim
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Marcos M. Peterle
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Ana Guerreiro
- Instituto de Medicina Molecular
- Faculdade de Medicina
- Universidade de Lisboa
- Lisboa
- Portugal
| | - Daniel F. Coimbra
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Renata S. Heying
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Giovani F. Caramori
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Antonio L. Braga
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | | | - Ademir Neves
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | | | - Rosely A. Peralta
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
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26
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Motloch P, Guerreiro A, Azeredo CQ, Bernardes GJL, Hunter CA, Kocsis I. Triaminopyrimidine derivatives as transmembrane HCl transporters. Org Biomol Chem 2019; 17:5633-5638. [DOI: 10.1039/c9ob00725c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A series of triaminopyrimidine-based anion transporters has been described, capable of diminishing proton gradients across lipid bilayers at physiologically relevant pH.
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Affiliation(s)
- Petr Motloch
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
| | - Ana Guerreiro
- Instituto de Medicina Molecular
- Faculdade de Medicina da Universidade de Lisboa
- 1649-028 Lisboa
- Portugal
| | - Carolina Q. Azeredo
- Instituto de Medicina Molecular
- Faculdade de Medicina da Universidade de Lisboa
- 1649-028 Lisboa
- Portugal
| | - Gonçalo J. L. Bernardes
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
- Instituto de Medicina Molecular
| | | | - Istvan Kocsis
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
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27
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Costa L, Santos M, Assunção R, Braz P, Costa A, Santos J, Brazão R, Guerreiro A, Lopes I, Nowacki J, Gulis G. Learning by doing: a HIA study on bread salt reduction and its effects on cardiovascular disease. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky214.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- L Costa
- Instituto Nacional de Saúde Doutor Ricardo Jorge, BioISI - Biosystems and Integrative Sciences Institute, Lisbon, Portugal
| | - M Santos
- Instituto Nacional de Saúde Doutor Ricardo Jorge, Lisbon, Portugal
| | - R Assunção
- Instituto Nacional de Saúde Doutor Ricardo Jorge, Lisbon, Portugal
| | - P Braz
- Instituto Nacional de Saúde Doutor Ricardo Jorge, Lisbon, Portugal
| | - A Costa
- Instituto Nacional de Saúde Doutor Ricardo Jorge, Lisbon, Portugal
| | - J Santos
- Instituto Nacional de Saúde Doutor Ricardo Jorge, Lisbon, Portugal
| | - R Brazão
- Instituto Nacional de Saúde Doutor Ricardo Jorge, Lisbon, Portugal
| | - A Guerreiro
- Administração Regional de Saúde do Algarve, Faro, Portugal
| | - I Lopes
- Direção Geral da Educação, Lisbon, Portugal
| | - J Nowacki
- WHO Regional Office for Europe, Bonn, Germany
| | - G Gulis
- University of Southern Denmark, Esbjerg, Denmark
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28
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Matos MJ, Oliveira BL, Martínez-Sáez N, Guerreiro A, Cal PMSD, Bertoldo J, Maneiro M, Perkins E, Howard J, Deery MJ, Chalker JM, Corzana F, Jiménez-Osés G, Bernardes GJL. Chemo- and Regioselective Lysine Modification on Native Proteins. J Am Chem Soc 2018; 140:4004-4017. [PMID: 29473744 PMCID: PMC5880509 DOI: 10.1021/jacs.7b12874] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [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] [Indexed: 12/12/2022]
Abstract
![]()
Site-selective chemical
conjugation of synthetic molecules to proteins
expands their functional and therapeutic capacity. Current protein
modification methods, based on synthetic and biochemical technologies,
can achieve site selectivity, but these techniques often require extensive
sequence engineering or are restricted to the N-
or C-terminus. Here we show the computer-assisted
design of sulfonyl acrylate reagents for the modification of a single lysine residue on native protein sequences. This
feature of the designed sulfonyl acrylates, together with the innate
and subtle reactivity differences conferred by the unique local microenvironment
surrounding each lysine, contribute to the observed regioselectivity
of the reaction. Moreover, this site selectivity was predicted computationally,
where the lysine with the lowest pKa was
the kinetically favored residue at slightly basic pH. Chemoselectivity
was also observed as the reagent reacted preferentially at lysine,
even in those cases when other nucleophilic residues such as cysteine
were present. The reaction is fast and proceeds using a single molar
equivalent of the sulfonyl acrylate reagent under biocompatible conditions
(37 °C, pH 8.0). This technology was demonstrated by the quantitative
and irreversible modification of five different proteins including
the clinically used therapeutic antibody Trastuzumab without prior
sequence engineering. Importantly, their native secondary structure
and functionality is retained after the modification. This regioselective
lysine modification method allows for further bioconjugation through
aza-Michael addition to the acrylate electrophile that is generated
by spontaneous elimination of methanesulfinic acid upon lysine labeling.
We showed that a protein–antibody conjugate bearing a site-specifically
installed fluorophore at lysine could be used for selective imaging
of apoptotic cells and detection of Her2+ cells, respectively. This
simple, robust method does not require genetic engineering and may
be generally used for accessing diverse, well-defined protein conjugates
for basic biology and therapeutic studies.
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Affiliation(s)
- Maria J Matos
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K
| | - Bruno L Oliveira
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K
| | - Nuria Martínez-Sáez
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa , Avenida Professor Egas Moniz , Lisboa , Portugal
| | - Pedro M S D Cal
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa , Avenida Professor Egas Moniz , Lisboa , Portugal
| | - Jean Bertoldo
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K
| | - María Maneiro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica , Universidade de Santiago de Compostela , calle Jenaro de la Fuente s/n , Santiago de Compostela , Spain
| | - Elizabeth Perkins
- Albumedix Ltd, Castle Court, 59 Castle Boulevard , Nottingham , United Kingdom
| | - Julie Howard
- Cambridge Centre for Proteomics, Cambridge Systems Biology Centre, Department of Biochemistry , University of Cambridge , Tennis Court Road , Cambridge , U.K
| | - Michael J Deery
- Cambridge Centre for Proteomics, Cambridge Systems Biology Centre, Department of Biochemistry , University of Cambridge , Tennis Court Road , Cambridge , U.K
| | - Justin M Chalker
- Centre for NanoScale Science and Technology, College of Science and Engineering , Flinders University Bedford Park , South Australia , Australia
| | - Francisco Corzana
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , Logroño , Spain
| | - Gonzalo Jiménez-Osés
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , Logroño , Spain
| | - Gonçalo J L Bernardes
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa , Avenida Professor Egas Moniz , Lisboa , Portugal
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29
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Freedy A, Matos MJ, Boutureira O, Corzana F, Guerreiro A, Akkapeddi P, Somovilla VJ, Rodrigues T, Nicholls K, Xie B, Jiménez-Osés G, Brindle KM, Neves AA, Bernardes GJL. Chemoselective Installation of Amine Bonds on Proteins through Aza-Michael Ligation. J Am Chem Soc 2017; 139:18365-18375. [PMID: 29206031 PMCID: PMC5799870 DOI: 10.1021/jacs.7b10702] [Citation(s) in RCA: 63] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Indexed: 12/30/2022]
Abstract
Chemical modification of proteins is essential for a variety of important diagnostic and therapeutic applications. Many strategies developed to date lack chemo- and regioselectivity as well as result in non-native linkages that may suffer from instability in vivo and adversely affect the protein's structure and function. We describe here the reaction of N-nucleophiles with the amino acid dehydroalanine (Dha) in a protein context. When Dha is chemically installed in proteins, the addition of a wide-range N-nucleophiles enables the rapid formation of amine linkages (secondary and tertiary) in a chemoselective manner under mild, biocompatible conditions. These new linkages are stable at a wide range of pH values (pH 2.8 to 12.8), under reducing conditions (biological thiols such as glutathione) and in human plasma. This method is demonstrated for three proteins and is shown to be fully compatible with disulfide bridges, as evidenced by the selective modification of recombinant albumin that displays 17 structurally relevant disulfides. The practicability and utility of our approach is further demonstrated by the construction of a chemically modified C2A domain of Synaptotagmin-I protein that retains its ability to preferentially bind to apoptotic cells at a level comparable to the native protein. Importantly, the method was useful for building a homogeneous antibody-drug conjugate with a precise drug-to-antibody ratio of 2. The kinase inhibitor crizotinib was directly conjugated to Dha through its piperidine motif, and its antibody-mediated intracellular delivery results in 10-fold improvement of its cancer cell-killing efficacy. The simplicity and exquisite site-selectivity of the aza-Michael ligation described herein allows the construction of stable secondary and tertiary amine-linked protein conjugates without affecting the structure and function of biologically relevant proteins.
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Affiliation(s)
- Allyson
M. Freedy
- Department
of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, U.K.
| | - Maria J. Matos
- Department
of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, U.K.
| | - Omar Boutureira
- Department
of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, U.K.
| | - Francisco Corzana
- Department
of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, U.K.
- Departamento
de Química, Centro de Investigación en Síntesis
Química, Universidad de La Rioja, 26006 Logroño, Spain
| | - Ana Guerreiro
- Instituto
de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Padma Akkapeddi
- Instituto
de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Víctor J. Somovilla
- Department
of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, U.K.
- Departamento
de Química, Centro de Investigación en Síntesis
Química, Universidad de La Rioja, 26006 Logroño, Spain
| | - Tiago Rodrigues
- Instituto
de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Karl Nicholls
- Albumedix
Ltd., Castle Court, 59
Castle Boulevard, NG7 1FD Nottingham, U.K.
| | - Bangwen Xie
- Li
Ka Shing Centre, Cancer Research UK Cambridge
Institute, Robinson Way, CB2 0RE Cambridge, U.K.
| | - Gonzalo Jiménez-Osés
- Departamento
de Química, Centro de Investigación en Síntesis
Química, Universidad de La Rioja, 26006 Logroño, Spain
| | - Kevin M. Brindle
- Departamento
de Química, Centro de Investigación en Síntesis
Química, Universidad de La Rioja, 26006 Logroño, Spain
- Li
Ka Shing Centre, Cancer Research UK Cambridge
Institute, Robinson Way, CB2 0RE Cambridge, U.K.
| | - André A. Neves
- Li
Ka Shing Centre, Cancer Research UK Cambridge
Institute, Robinson Way, CB2 0RE Cambridge, U.K.
| | - Gonçalo J. L. Bernardes
- Department
of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, U.K.
- Instituto
de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
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30
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Smolinska-Kempisty K, Ahmad OS, Guerreiro A, Karim K, Piletska E, Piletsky S. New potentiometric sensor based on molecularly imprinted nanoparticles for cocaine detection. Biosens Bioelectron 2017; 96:49-54. [DOI: 10.1016/j.bios.2017.04.034] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 04/05/2017] [Accepted: 04/25/2017] [Indexed: 10/19/2022]
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31
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Karim K, Cowen T, Guerreiro A, Piletska E, Whitcombe MJ. A Protocol for the Computational Design of High Affi nity Molecularly Imprinted Polymer Synthetic Receptors. ACTA ACUST UNITED AC 2017. [DOI: 10.17352/gjbbs.000009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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32
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Piletsky SS, Rabinowicz S, Yang Z, Zagar C, Piletska EV, Guerreiro A, Piletsky SA. Development of molecularly imprinted polymers specific for blood antigens for application in antibody-free blood typing. Chem Commun (Camb) 2017; 53:1793-1796. [DOI: 10.1039/c6cc08716g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel system for blood type testing is developed based on the first molecularly imprinted nanoparticles specific to oligosaccharides.
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Affiliation(s)
| | | | - Z. Yang
- Department of Chemistry
- Imperial College London
- London
- UK
| | - C. Zagar
- Department of Chemistry
- Imperial College London
- London
- UK
| | - E. V. Piletska
- Department of Chemistry
- College of Science and Engineering
- University of Leicester
- Leicester
- UK
| | - A. Guerreiro
- Department of Chemistry
- College of Science and Engineering
- University of Leicester
- Leicester
- UK
| | - S. A. Piletsky
- Department of Chemistry
- College of Science and Engineering
- University of Leicester
- Leicester
- UK
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33
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Cal PMSD, Sieglitz F, Santos FMF, Parente Carvalho C, Guerreiro A, Bertoldo JB, Pischel U, Gois PMP, Bernardes GJL. Site-selective installation of BASHY fluorescent dyes to Annexin V for targeted detection of apoptotic cells. Chem Commun (Camb) 2016; 53:368-371. [PMID: 27935613 PMCID: PMC6485347 DOI: 10.1039/c6cc08671c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [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] [Indexed: 11/21/2022]
Abstract
Fluorophores are indispensable for imaging biological processes. We report the design and synthesis of azide-tagged boronic acid salicylidenehydrazone (BASHY) dyes and their use for site-selective labelling of Annexin V. The Annexin V-BASHY conjugate maintained function and fluorescence as demonstrated by the targeted detection of apoptotic cells.
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Affiliation(s)
- Pedro M S D Cal
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal. and Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK.
| | - Florian Sieglitz
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal.
| | - Fábio M F Santos
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal.
| | - Cátia Parente Carvalho
- CIQSO - Center for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva, Spain
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal.
| | - Jean B Bertoldo
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK.
| | - Uwe Pischel
- CIQSO - Center for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva, Spain
| | - Pedro M P Gois
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal.
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal. and Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK.
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34
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Jiménez-Moreno E, Guo Z, Oliveira BL, Albuquerque IS, Kitowski A, Guerreiro A, Boutureira O, Rodrigues T, Jiménez-Osés G, Bernardes GJL. Vinyl Ether/Tetrazine Pair for the Traceless Release of Alcohols in Cells. Angew Chem Int Ed Engl 2016; 56:243-247. [PMID: 27930843 PMCID: PMC6485351 DOI: 10.1002/anie.201609607] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/08/2016] [Indexed: 11/24/2022]
Abstract
The cleavage of a protecting group from a protein or drug under bioorthogonal conditions enables accurate spatiotemporal control over protein or drug activity. Disclosed herein is that vinyl ethers serve as protecting groups for alcohol‐containing molecules and as reagents for bioorthogonal bond‐cleavage reactions. A vinyl ether moiety was installed in a range of molecules, including amino acids, a monosaccharide, a fluorophore, and an analogue of the cytotoxic drug duocarmycin. Tetrazine‐mediated decaging proceeded under biocompatible conditions with good yields and reasonable kinetics. Importantly, the nontoxic, vinyl ether duocarmycin double prodrug was successfully decaged in live cells to reinstate cytotoxicity. This bioorthogonal reaction presents broad applicability and may be suitable for in vivo applications.
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Affiliation(s)
- Ester Jiménez-Moreno
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Zijian Guo
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Bruno L Oliveira
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Inês S Albuquerque
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Annabel Kitowski
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Omar Boutureira
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Tiago Rodrigues
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Gonzalo Jiménez-Osés
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006, Logroño, Spain.,Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC), Zaragoza, Spain
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
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35
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Jiménez‐Moreno E, Guo Z, Oliveira BL, Albuquerque IS, Kitowski A, Guerreiro A, Boutureira O, Rodrigues T, Jiménez‐Osés G, Bernardes GJL. Vinyl Ether/Tetrazine Pair for the Traceless Release of Alcohols in Cells. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609607] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ester Jiménez‐Moreno
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Zijian Guo
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Bruno L. Oliveira
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Inês S. Albuquerque
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Annabel Kitowski
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Omar Boutureira
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Tiago Rodrigues
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Gonzalo Jiménez‐Osés
- Departamento de Química Universidad de La Rioja, Centro de Investigación en Síntesis Química 26006 Logroño Spain
- Institute of Biocomputation and Physics of Complex Systems (BIFI) University of Zaragoza, BIFI-IQFR (CSIC) Zaragoza Spain
| | - Gonçalo J. L. Bernardes
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
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36
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Oliveira BL, Guo Z, Boutureira O, Guerreiro A, Jiménez‐Osés G, Bernardes GJL. A Minimal, Unstrained S-Allyl Handle for Pre-Targeting Diels-Alder Bioorthogonal Labeling in Live Cells. Angew Chem Int Ed Engl 2016; 55:14683-14687. [PMID: 27763724 PMCID: PMC5132151 DOI: 10.1002/anie.201608438] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [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: 08/29/2016] [Revised: 09/27/2016] [Indexed: 11/12/2022]
Abstract
The unstrained S-allyl cysteine amino acid was site-specifically installed on apoptosis protein biomarkers and was further used as a chemical handle and ligation partner for 1,2,4,5-tetrazines by means of an inverse-electron-demand Diels-Alder reaction. We demonstrate the utility of this minimal handle for the efficient labeling of apoptotic cells using a fluorogenic tetrazine dye in a pre-targeting approach. The small size, easy chemical installation, and selective reactivity of the S-allyl handle towards tetrazines should be readily extendable to other proteins and biomolecules, which could facilitate their labeling within live cells.
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Affiliation(s)
- Bruno L. Oliveira
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Zijian Guo
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Omar Boutureira
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Ana Guerreiro
- Instituto de Medicina MolecularFaculdade de MedicinaUniversidade de LisboaAvenida Professor Egas Moniz1649-028LisboaPortugal
| | - Gonzalo Jiménez‐Osés
- Departamento de QuímicaUniversidad de La RiojaCentro de Investigación en Síntesis Química26006LogroñoSpain
- Institute of Biocomputation and Physics of Complex Systems (BIFI)University of ZaragozaBIFI-IQFR (CSIC)ZaragozaSpain
| | - Gonçalo J. L. Bernardes
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
- Instituto de Medicina MolecularFaculdade de MedicinaUniversidade de LisboaAvenida Professor Egas Moniz1649-028LisboaPortugal
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Figueiredo A, Martins J, Sebastiana M, Guerreiro A, Silva A, Matos AR, Monteiro F, Pais MS, Roepstorff P, Coelho AV. Specific adjustments in grapevine leaf proteome discriminating resistant and susceptible grapevine genotypes to Plasmopara viticola. J Proteomics 2016; 152:48-57. [PMID: 27989945 DOI: 10.1016/j.jprot.2016.10.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [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: 07/13/2016] [Revised: 10/22/2016] [Accepted: 10/24/2016] [Indexed: 10/20/2022]
Abstract
Grapevine downy mildew is an important disease affecting crop production leading to severe yield losses. This study aims to identify the grapevine cultivar-specific adjustments of leaf proteome that allow the discrimination between resistance and susceptibility towards P. viticola (constitutive (0h) and in after inoculation (6, 12 and 24h). Leaf proteome analysis was performed using 2D difference gel electrophoresis followed by protein identification via mass spectrometry. In addition, we analysed ROS production, antioxidant capacity, lipid peroxidation and gene expression. Proteins related to photosynthesis and metabolism allowed the discrimination of resistant and susceptible grapevine cultivars prior to P. viticola inoculation. Following inoculation increase of hydrogen peroxide levels, cellular redox regulation, establishment of ROS signalling and plant cell death seem to be key points differentiating the resistant genotype. Lipid associated signalling events, particularly related to jasmonates appear also to play a major role in the establishment of resistance. The findings from this study contribute to a better understanding of genotype-specific differences that account for a successful establishment of a defence response to the downy mildew pathogen. BIOLOGICAL SIGNIFICANCE Here, we present for the first time grapevine cultivar-specific adjustments of leaf proteome that allow the discrimination between resistance and susceptibility towards P. viticola (constitutive (0h) and in after inoculation (6, 12 and 24h). We have highlighted that, following inoculation, the major factors differentiating the resistant from the susceptible grapevine cultivars are the establishment of effective ROS signalling together with lipid-associated signalling events, particularly related to jasmonates. It is believed that plants infected with biotrophic pathogens suppress JA-mediated responses, however recent evidences shown that jasmonic acid signalling pathway in grapevine resistance against Plasmopara viticola. Our results corroborate those evidences and highlight the importance of lipid- signalling for an effective resistance response against the downy mildew pathogen.
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Affiliation(s)
- Andreia Figueiredo
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal.
| | - Joana Martins
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da Republica, Oeiras 2780-157, Portugal
| | - Mónica Sebastiana
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Ana Guerreiro
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Anabela Silva
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Ana Rita Matos
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Filipa Monteiro
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Maria Salomé Pais
- Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Peter Roepstorff
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense M, Denmark
| | - Ana Varela Coelho
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da Republica, Oeiras 2780-157, Portugal
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Oliveira BL, Guo Z, Boutureira O, Guerreiro A, Jiménez-Osés G, Bernardes GJL. A Minimal, Unstrained S-Allyl Handle for Pre-Targeting Diels-Alder Bioorthogonal Labeling in Live Cells. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608438] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bruno L. Oliveira
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
| | - Zijian Guo
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
| | - Omar Boutureira
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
| | - Ana Guerreiro
- Instituto de Medicina Molecular; Faculdade de Medicina; Universidade de Lisboa; Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Gonzalo Jiménez-Osés
- Departamento de Química; Universidad de La Rioja; Centro de Investigación en Síntesis Química; 26006 Logroño Spain
- Institute of Biocomputation and Physics of Complex Systems (BIFI); University of Zaragoza; BIFI-IQFR (CSIC) Zaragoza Spain
| | - Gonçalo J. L. Bernardes
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
- Instituto de Medicina Molecular; Faculdade de Medicina; Universidade de Lisboa; Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
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Marto J, Vitor C, Guerreiro A, Severino C, Eleutério C, Ascenso A, Simões S. Ethosomes for enhanced skin delivery of griseofulvin. Colloids Surf B Biointerfaces 2016; 146:616-23. [PMID: 27429295 DOI: 10.1016/j.colsurfb.2016.07.021] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [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: 04/08/2016] [Revised: 07/06/2016] [Accepted: 07/07/2016] [Indexed: 11/28/2022]
Abstract
Griseofulvin (GRF) is an important antifungal drug with low bioavailability and, for this reason, a topical formulation with a targeted action and minimal systemic effects, appears to be a preferable solution. GRF poor solubility has limited the development of topical formulations and their release to the market. The aim of this work was to prepare a new GRF formulation for topical application using lipid-based nanosystems; to study its permeation and penetration, cell viability and to evaluate its therapeutic action. Ethosomal systems composed of soy bean phosphatidylcholine, ethanol and water were prepared for incorporating GRF. After the characterization of the vesicles in terms of size, charge and penetrability, permeation through newborn pig using Franz diffusion cells was conducted. Cell viability at different concentrations of the chosen formulation was determined. At last, skin adapted agar diffusion test was performed to assess the therapeutic efficacy of the formulation. GRF vesicles had mean size of 130nm. Permeation and penetration assays revealed that GRF-loaded ethosomes have an adequate profile to be used in a topical formulation since drug retention in the stratum corneum was achieved. Cell viability tests proved this formulation presented no cytotoxicity to HaCaT cells for concentrations below 50μg/mL. The skin diffusion test evidenced the potential of developed formulation to target skin dermatophytes. The results obtained in this study contribute to a new perspective in topical treatment of fungal infections.
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Affiliation(s)
- Joana Marto
- Universidade de Lisboa, Faculdade de Farmácia, Nano2B Group of Research Institute for Medicines (iMed.ULisboa), Av. Professor Gama Pinto, 1649-003 Lisboa, Portugal.
| | - Catarina Vitor
- Universidade de Lisboa, Faculdade de Farmácia, Nano2B Group of Research Institute for Medicines (iMed.ULisboa), Av. Professor Gama Pinto, 1649-003 Lisboa, Portugal.
| | - Ana Guerreiro
- Universidade de Lisboa, Faculdade de Farmácia, Nano2B Group of Research Institute for Medicines (iMed.ULisboa), Av. Professor Gama Pinto, 1649-003 Lisboa, Portugal.
| | - Cristiana Severino
- Universidade de Lisboa, Faculdade de Farmácia, Nano2B Group of Research Institute for Medicines (iMed.ULisboa), Av. Professor Gama Pinto, 1649-003 Lisboa, Portugal.
| | - Carla Eleutério
- Universidade de Lisboa, Faculdade de Farmácia, Nano2B Group of Research Institute for Medicines (iMed.ULisboa), Av. Professor Gama Pinto, 1649-003 Lisboa, Portugal.
| | - Andreia Ascenso
- Universidade de Lisboa, Faculdade de Farmácia, Nano2B Group of Research Institute for Medicines (iMed.ULisboa), Av. Professor Gama Pinto, 1649-003 Lisboa, Portugal.
| | - Sandra Simões
- Universidade de Lisboa, Faculdade de Farmácia, Nano2B Group of Research Institute for Medicines (iMed.ULisboa), Av. Professor Gama Pinto, 1649-003 Lisboa, Portugal.
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Czulak J, Guerreiro A, Metran K, Canfarotta F, Goddard A, Cowan RH, Trochimczuk AW, Piletsky S. Formation of target-specific binding sites in enzymes: solid-phase molecular imprinting of HRP. Nanoscale 2016; 8:11060-11066. [PMID: 27174700 DOI: 10.1039/c6nr02009g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Here we introduce a new concept for synthesising molecularly imprinted nanoparticles by using proteins as macro-functional monomers. For a proof-of-concept, a model enzyme (HRP) was cross-linked using glutaraldehyde in the presence of glass beads (solid-phase) bearing immobilized templates such as vancomycin and ampicillin. The cross-linking process links together proteins and protein chains, which in the presence of templates leads to the formation of permanent target-specific recognition sites without adverse effects on the enzymatic activity. Unlike complex protein engineering approaches commonly employed to generate affinity proteins, the method proposed can be used to produce protein-based ligands in a short time period using native protein molecules. These affinity materials are potentially useful tools especially for assays since they combine the catalytic properties of enzymes (for signaling) and molecular recognition properties of antibodies. We demonstrate this concept in an ELISA-format assay where HRP imprinted with vancomycin and ampicillin replaced traditional enzyme-antibody conjugates for selective detection of templates at micromolar concentrations. This approach can potentially provide a fast alternative to raising antibodies for targets that do not require high assay sensitivities; it can also find uses as a biochemical research tool, as a possible replacement for immunoperoxidase-conjugates.
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Affiliation(s)
- J Czulak
- Faculty of Chemistry, Department of Polymer and Carbonaceous Materials, Wroclaw University of Technology, 27 Wyspianskiego Str., 50-373 Wroclaw, Poland.
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Hierro-Rodriguez A, Leite IT, Rocha-Rodrigues P, Fernandes P, Araujo JP, Jorge PAS, Santos JL, Teixeira JM, Guerreiro A. Hydrogen sensing via anomalous optical absorption of palladium-based metamaterials. Nanotechnology 2016; 27:185501. [PMID: 27003717 DOI: 10.1088/0957-4484/27/18/185501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A palladium (Pd)-based optical metamaterial has been designed, fabricated and characterized for its application in hydrogen sensing. The metamaterial can replace Pd thin films in optical transmission schemes for sensing with performances far superior to those of conventional sensors. This artificial material consists of a palladium-alumina metamaterial fabricated using inexpensive and industrial-friendly bottom-up techniques. During the exposure to hydrogen, the system exhibits anomalous optical absorption when compared to the well-known response of Pd thin films, this phenomenon being the key factor for the sensor sensitivity. The exposure to hydrogen produces a large variation in the light transmission through the metamembrane (more than 30% with 4% in volume hydrogen-nitrogen gas mixture at room temperature and atmospheric pressure), thus avoiding the need for sophisticated optical detection systems. An optical homogenization model is proposed to explain the metamaterial response. These results contribute to the development of reliable and low-cost hydrogen sensors with potential applications in the hydrogen economy and industrial processes to name a few, and also open the door to optically study the hydrogen diffusion processes in Pd nanostructures.
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Affiliation(s)
- A Hierro-Rodriguez
- IFIMUP and IN-Institute of Nanoscience and Nanotechnology, Rua Campo Alegre, 4169-007 Porto, Portugal. INESC-TEC (Coordinated by INESC-Porto), Rua Campo Alegre, 4169-007 Porto, Portugal
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Silva PAGC, Guerreiro A, Santos JM, Braks JAM, Janse CJ, Mair GR. Translational Control of UIS4 Protein of the Host-Parasite Interface Is Mediated by the RNA Binding Protein Puf2 in Plasmodium berghei Sporozoites. PLoS One 2016; 11:e0147940. [PMID: 26808677 PMCID: PMC4726560 DOI: 10.1371/journal.pone.0147940] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 01/11/2016] [Indexed: 11/19/2022] Open
Abstract
UIS4 is a key protein component of the host-parasite interface in the liver stage of the rodent malaria parasite Plasmodium berghei and required for parasite survival after invasion. In the infectious sporozoite, UIS4 protein has variably been shown to be translated but also been reported to be translationally repressed. Here we show that uis4 mRNA translation is regulated by the P. berghei RNA binding protein Pumilio-2 (PbPuf2 or Puf2 from here on forward) in infectious salivary gland sporozoites in the mosquito vector. Using RNA immunoprecipitation we show that uis4 mRNA is bound by Puf2 in salivary gland sporozoites. In the absence of Puf2, uis4 mRNA translation is de-regulated and UIS4 protein expression upregulated in salivary gland sporozoites. Here, using RNA immunoprecipitation, we reveal the first Puf2-regulated mRNA in this parasite.
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Affiliation(s)
- Patrícia A. G. C. Silva
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649–028, Lisbon, Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649–028, Lisbon, Portugal
| | - Jorge M. Santos
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649–028, Lisbon, Portugal
| | | | | | - Gunnar R. Mair
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649–028, Lisbon, Portugal
- Parasitology, Department of Infectious Diseases, University of Heidelberg Medical School, Im Neuenheimer Feld 324, 69120, Heidelberg, Germany
- * E-mail:
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Cáceres C, Canfarotta F, Chianella I, Pereira E, Moczko E, Esen C, Guerreiro A, Piletska E, Whitcombe MJ, Piletsky SA. Does size matter? Study of performance of pseudo-ELISAs based on molecularly imprinted polymer nanoparticles prepared for analytes of different sizes. Analyst 2016; 141:1405-12. [DOI: 10.1039/c5an02018b] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we evaluate whether the size of the template used to produce molecularly imprinted nanoparticles can affect their performance in pseudo-ELISAs.
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Affiliation(s)
- C. Cáceres
- Department of Analytical and Inorganic Chemistry
- Faculty of Chemical Sciences
- University of Concepcion
- Chile
| | - F. Canfarotta
- MIP Diagnostics Ltd
- University of Leicester
- Leicester LE1 7RH
- UK
| | - I. Chianella
- Biotechnology Centre
- Cranfield University
- Cranfield
- UK
| | - E. Pereira
- Department of Analytical and Inorganic Chemistry
- Faculty of Chemical Sciences
- University of Concepcion
- Chile
| | - E. Moczko
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
| | - C. Esen
- Department of Chemistry
- Faculty of Arts and Sciences
- Adnan Menderes University
- 09010 Aydin
- Turkey
| | - A. Guerreiro
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
| | - E. Piletska
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
| | - M. J. Whitcombe
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
| | - S. A. Piletsky
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
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Guerreiro A, Figueiredo J, Sousa Silva M, Figueiredo A. Linking Jasmonic Acid to Grapevine Resistance against the Biotrophic Oomycete Plasmopara viticola. Front Plant Sci 2016; 7:565. [PMID: 27200038 PMCID: PMC4848468 DOI: 10.3389/fpls.2016.00565] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 04/12/2016] [Indexed: 05/07/2023]
Abstract
Plant resistance to biotrophic pathogens is classically believed to be mediated through salicylic acid (SA) signaling leading to hypersensitive response followed by the establishment of Systemic Acquired Resistance. Jasmonic acid (JA) signaling has extensively been associated to the defense against necrotrophic pathogens and insects inducing the accumulation of secondary metabolites and PR proteins. Moreover, it is believed that plants infected with biotrophic fungi suppress JA-mediated responses. However, recent evidences have shown that certain biotrophic fungal species also trigger the activation of JA-mediated responses, suggesting a new role for JA in the defense against fungal biotrophs. Plasmopara viticola is a biotrophic oomycete responsible for the grapevine downy mildew, one of the most important diseases in viticulture. In this perspective, we show recent evidences of JA participation in grapevine resistance against P. viticola, outlining the hypothesis of JA involvement in the establishment of an incompatible interaction with this biotroph. We also show that in the first hours after P. viticola inoculation the levels of OPDA, JA, JA-Ile, and SA increase together with an increase of expression of genes associated to JA and SA signaling pathways. Our data suggests that, on the first hours after P. viticola inoculation, JA signaling pathway is activated and the outcomes of JA-SA interactions may be tailored in the defense response against this biotrophic pathogen.
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Affiliation(s)
- Ana Guerreiro
- Biosystems and Integrative Sciences Institute, Science Faculty of Lisbon UniversityLisboa, Portugal
| | - Joana Figueiredo
- Biosystems and Integrative Sciences Institute, Science Faculty of Lisbon UniversityLisboa, Portugal
- Laboratório de FTICR e Espectrometria de Massa Estrutural, Faculdade de Ciências, Universidade de LisboaLisboa, Portugal
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de LisboaLisboa, Portugal
| | - Marta Sousa Silva
- Laboratório de FTICR e Espectrometria de Massa Estrutural, Faculdade de Ciências, Universidade de LisboaLisboa, Portugal
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de LisboaLisboa, Portugal
| | - Andreia Figueiredo
- Biosystems and Integrative Sciences Institute, Science Faculty of Lisbon UniversityLisboa, Portugal
- *Correspondence: Andreia Figueiredo,
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Garcia-Mutio D, Guerreiro A, Gomez-Caballero A, Gutierrez-Climente R, Piletsky S, Goicolea M, Barrio R. Molecularly Imprinted High Affinity Nanoparticles for 4-Ethylphenol Sensing. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.proeng.2015.08.821] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Guerreiro A, Deligianni E, Santos JM, Silva PAGC, Louis C, Pain A, Janse CJ, Franke-Fayard B, Carret CK, Siden-Kiamos I, Mair GR. Genome-wide RIP-Chip analysis of translational repressor-bound mRNAs in the Plasmodium gametocyte. Genome Biol 2014; 15:493. [PMID: 25418785 PMCID: PMC4234863 DOI: 10.1186/s13059-014-0493-0] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 10/09/2014] [Indexed: 01/20/2023] Open
Abstract
Background Following fertilization, the early proteomes of metazoans are defined by the translation of stored but repressed transcripts; further embryonic development relies on de novo transcription of the zygotic genome. During sexual development of Plasmodium berghei, a rodent model for human malaria species including P. falciparum, the stability of repressed mRNAs requires the translational repressors DOZI and CITH. When these repressors are absent, Plasmodium zygote development and transmission to the mosquito vector is halted, as hundreds of transcripts become destabilized. However, which mRNAs are direct targets of these RNA binding proteins, and thus subject to translational repression, is unknown. Results We identify the maternal mRNA contribution to post-fertilization development of P. berghei using RNA immunoprecipitation and microarray analysis. We find that 731 mRNAs, approximately 50% of the transcriptome, are associated with DOZI and CITH, allowing zygote development to proceed in the absence of RNA polymerase II transcription. Using GFP-tagging, we validate the repression phenotype of selected genes and identify mRNAs relying on the 5′ untranslated region for translational control. Gene deletion reveals a novel protein located in the ookinete crystalloid with an essential function for sporozoite development. Conclusions Our study details for the first time the P. berghei maternal repressome. This mRNA population provides the developing ookinete with coding potential for key molecules required for life-cycle progression, and that are likely to be critical for the transmission of the malaria parasite from the rodent and the human host to the mosquito vector. Electronic supplementary material The online version of this article (doi:10.1186/s13059-014-0493-0) contains supplementary material, which is available to authorized users.
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Santos JM, Rao PN, Guerreiro A, Pinho L, Carret CK, Franke-Fayard BMD, Templeton TJ, Janse CJ, Mair GR. Plasmodium translationally repressed gene products are essential for parasite development and malaria transmission. Malar J 2012. [PMCID: PMC3472677 DOI: 10.1186/1475-2875-11-s1-p85] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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Guerreiro A, da Costa G, Gomes RA, Ribeiro-Silva C, Gilberto S, Mateus E, Monteiro E, Barroso E, Coelho AV, Ponces Freire A, Cordeiro C. α-Synuclein aggregation in the saliva of familial transthyretin amyloidosis: a potential biomarker. Amyloid 2012; 19:74-80. [PMID: 22591216 DOI: 10.3109/13506129.2012.668500] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Familial transthyretin amyloidosis (ATTR) is an autosomal dominant disease characterized by the formation of transthyretin (TTR) amyloid deposits. This crippling and fatal disease is associated with point mutations in TTR, a protein mainly produced in the liver. Hence, liver transplantation is the only treatment capable of halting disease progression. Ideally, liver transplantation should be performed as early as possible in the disease course before significant neurologic disability has been incurred. Early detection of disease before serious pathological lesions occur is crucial for the clinical management of patients and for morbidity delay. Unfortunately, the presence of TTR mutations by itself is not a predictor of disease onset or progression. In the present work, we observed an increased oligomerization of α-synuclein in the saliva of ATTR symptomatic individuals comparatively to asymptomatic carriers of the same TTR mutation and healthy control subjects. Based on this observation, we propose monitoring α-synuclein oligomers in saliva as a biomarker of ATTR progression. Since α-synuclein plays a major role in several neurodegenerative disorders, assessing its oligomerization state in this fluid provides a non-invasive approach to survey these pathologies.
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Affiliation(s)
- Ana Guerreiro
- Departamento de Química e Bioquímica, FCUL, Campo Grande, Lisboa, Portugal
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da Costa G, Guerreiro A, Correia CF, Gomes RJ, Freire A, Monteiro E, Barroso E, Coelho AV, Outeiro TF, Freire AP, Cordeiro C. A non-invasive method based on saliva to characterize transthyretin in familial amyloidotic polyneuropathy patients using FT-ICR high-resolution MS. Proteomics Clin Appl 2011; 4:674-8. [PMID: 21179887 DOI: 10.1002/prca.200900118] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE To identify, characterize and perform a relative quantification of human transthyretin (TTR) variants in human saliva. EXPERIMENTAL DESIGN Serum and saliva samples were collected from healthy and familial amyloidotic polyneuropathy (FAP) patients, proteins separated by SDS-PAGE, TTR bands excised, in-gel digested and analyzed by MALDI-FTICR. RESULTS We identified and performed a relative quantification of mutated and native TTR forms in human saliva, based on FTICR-MS. The results are quantitatively identical to the ones obtained with human serum. In FAP patients subjected to cadaveric liver transplant, the TTR mutant form is no longer detected in saliva, while in patients receiving a domino liver from a FAP donor the mutant form of TTR becomes detectable in saliva, thus demonstrating the serum origin of TTR in saliva. CONCLUSIONS AND CLINICAL RELEVANCE Saliva TTR originates in serum and the ratio of mutant to native TTR is preserved. The method provides a non-invasive detection of mutated TTR and a relative quantification of TTR forms. Diagnostic and disease prognosis of FAP is crucial at early stages of the disease and after liver transplantation, the only curative therapy. A suitable non-invasive method was developed for monitoring the most important FAP biomarker in human saliva.
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Affiliation(s)
- Gonçalo da Costa
- Departamento de Química e Bioquímica, Centro de Química e Bioquímica, Faculdade de Ciências da Universidadede Lisboa, Edifício C8, Lisboa, Portugal
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Vitali D, Gigan S, Ferreira A, Böhm HR, Tombesi P, Guerreiro A, Vedral V, Zeilinger A, Aspelmeyer M. Optomechanical entanglement between a movable mirror and a cavity field. Phys Rev Lett 2007; 98:030405. [PMID: 17358666 DOI: 10.1103/physrevlett.98.030405] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2006] [Indexed: 05/14/2023]
Abstract
We show how stationary entanglement between an optical cavity field mode and a macroscopic vibrating mirror can be generated by means of radiation pressure. We also show how the generated optomechanical entanglement can be quantified, and we suggest an experimental readout scheme to fully characterize the entangled state. Surprisingly, such optomechanical entanglement is shown to persist for environment temperatures above 20 K using state-of-the-art experimental parameters.
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Affiliation(s)
- D Vitali
- Dipartimento di Fisica, Università di Camerino, I-62032 Camerino (MC), Italy
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