1
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Wright GD, Thompson KA, Reis Y, Bischof J, Hockberger PE, Itano MS, Yen L, Adelodun ST, Bialy N, Brown CM, Chaabane L, Chew TL, Chitty AI, Cordelières FP, De Niz M, Ellenberg J, Engelbrecht L, Fabian-Morales E, Fazeli E, Fernandez-Rodriguez J, Ferrando-May E, Fletcher G, Galloway GJ, Guerrero A, Guimarães JM, Jacobs CA, Jayasinghe S, Kable E, Kitten GT, Komoto S, Ma X, Marques JA, Millis BA, Miranda K, JohnO'Toole P, Olatunji SY, Paina F, Pollak CN, Prats C, Pylvänäinen JW, Rahmoon MA, Reiche MA, Riches JD, Rossi AH, Salamero J, Thiriet C, Terjung S, Vasconcelos ADS, Keppler A. Recognising the importance and impact of Imaging Scientists: Global guidelines for establishing career paths within core facilities. J Microsc 2024; 294:397-410. [PMID: 38691400 DOI: 10.1111/jmi.13307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 04/10/2024] [Accepted: 04/14/2024] [Indexed: 05/03/2024]
Abstract
In the dynamic landscape of scientific research, imaging core facilities are vital hubs propelling collaboration and innovation at the technology development and dissemination frontier. Here, we present a collaborative effort led by Global BioImaging (GBI), introducing international recommendations geared towards elevating the careers of Imaging Scientists in core facilities. Despite the critical role of Imaging Scientists in modern research ecosystems, challenges persist in recognising their value, aligning performance metrics and providing avenues for career progression and job security. The challenges encompass a mismatch between classic academic career paths and service-oriented roles, resulting in a lack of understanding regarding the value and impact of Imaging Scientists and core facilities and how to evaluate them properly. They further include challenges around sustainability, dedicated training opportunities and the recruitment and retention of talent. Structured across these interrelated sections, the recommendations within this publication aim to propose globally applicable solutions to navigate these challenges. These recommendations apply equally to colleagues working in other core facilities and research institutions through which access to technologies is facilitated and supported. This publication emphasises the pivotal role of Imaging Scientists in advancing research programs and presents a blueprint for fostering their career progression within institutions all around the world.
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Affiliation(s)
- Graham D Wright
- Research Support Centre, Agency for Science, Technology & Research (A*STAR), Singapore, Singapore
| | - Kerry A Thompson
- Anatomy Imaging and Microscopy Facility, School of Medicine, College of Medicine, Nursing and Health Science, University of Galway, Galway, Ireland
| | - Yara Reis
- Global BioImaging, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Johanna Bischof
- Euro-BioImaging Bio-Hub, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | | | - Michelle S Itano
- Neuroscience Center, Department of Cell Biology & Physiology, Carolina Institute of Developmental Disabilities, University of North Carolina at Chapel Hill, Chapel Hill, USA
| | - Lisa Yen
- Microscopy Australia, The University of Sydney, Sydney, Australia
| | - Stephen Taiye Adelodun
- Department of Anatomy, Ben Carson College of Health and Medical Sciences, Babcock University, Ilisan Remo, Ogun State, Nigeria
| | - Nikki Bialy
- BioImaging North America, Morgridge Institute of Research, Madison, USA
| | - Claire M Brown
- Advanced BioImaging Facility, Department of Physiology, McGill University, Montreal, Canada
| | - Linda Chaabane
- Euro-BioImaging Med-Hub, IBB-CNR, Italian Council of Research (CNR), Turin, Italy
| | - Teng-Leong Chew
- Advanced Imaging Center, Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, USA
| | - Andrew I Chitty
- OHSU University Shared Resources, Oregon Health and Science University, Portland, USA
| | - Fabrice P Cordelières
- France BioImaging INBS, Bordeaux Imaging Center (UAR3420), Centre National de la Recherche Scientifique (CNRS), Bordeaux, France
| | - Mariana De Niz
- Department of Cell and Developmental Biology, Center for Advanced Microscopy, Feinberg School of Medicine, Northwestern University, Chicago, USA
| | - Jan Ellenberg
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Lize Engelbrecht
- Central Analytical Facilities Microscopy Unit, Stellenbosch University, Stellenbosch, South Africa
| | - Eunice Fabian-Morales
- Genetics Department, Harvard Medical School, Boston, USA
- Unidad de Aplicaciones Avanzadas en Microscopía (ADMiRA), Instituto Nacional de Cancerología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Elnaz Fazeli
- Biomedicum Imaging Unit, Faculty of Medicine and HiLIFE, University of Helsinki, Helsinki, Finland
| | | | - Elisa Ferrando-May
- Department of Enabling Technology, German Cancer Research Center, Heidelberg, Germany
| | | | - Graham John Galloway
- Herston Imaging Research Facility, The University of Queensland, Queensland, Australia
| | - Adan Guerrero
- Laboratorio Nacional de Microscopía Avanzada, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - Jander Matos Guimarães
- Multi-user Center for Analysis of Biomedical Phenomena, State University of Amazonas (CMABio-UEA), Manaus, Brazil
| | - Caron A Jacobs
- Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Sachintha Jayasinghe
- Office of the Pro Vice-Chancellor (Research Infrastructure), The University of Queensland, Brisbane, Australia
- Office of the Pro Vice-Chancellor (Research Infrastructure), Queensland University of Technology, Brisbane, Australia
| | - Eleanor Kable
- Sydney Microscopy and Microanalysis, Microscopy Australia, University of Sydney, Sydney, Australia
| | - Gregory T Kitten
- Center of Microscopy, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Shinya Komoto
- Imaging Core Facility, Okinawa Institute of Science and Technology (OIST), Okinawa, Japan
- Optics and Imaging Facility, National Institute for Basic Biology (NIBB), Okazaki, Japan
| | - Xiaoxiao Ma
- Research Support Centre, Agency for Science, Technology & Research (A*STAR), Singapore, Singapore
| | - Jéssica Araújo Marques
- Multi-user Center for Analysis of Biomedical Phenomena, State University of Amazonas (CMABio-UEA), Manaus, Brazil
| | - Bryan A Millis
- Department of Biomedical Engineering, Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, Tennessee, USA
| | - Kildare Miranda
- National Center for Structural Biology and Bioimaging and Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Sunday Yinka Olatunji
- Department of Anatomy, Adventist School of Medicine of East Central Africa, Adventist University of Central Africa, Kigali, Rwanda
| | - Federica Paina
- Government Relations, LyondellBasell Industries N.V., Brussels, Belgium
| | - Cora Noemi Pollak
- Instituto de Investigación en Biomedicina de Buenos Aires - CONICET, Ciudad Autonoma de Buenos Aires, Buenos Aires, Argentina
| | - Clara Prats
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Mai Atef Rahmoon
- Advanced Imaging Center, Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, USA
| | - Michael A Reiche
- Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - James Douglas Riches
- Central Analytical Research Facility, Queensland University of Technology, Brisbane, Australia
| | - Andres Hugo Rossi
- Servicio de Microscopía y Bioimagenes, Fundación Instituto Leloir - CONICET, Buenos Aires, Argentina
| | - Jean Salamero
- CNRS-Institut Curie, France BioImaging INBS, Paris, France
| | - Caroline Thiriet
- France BioImaging INBS, Bordeaux Imaging Center (UAR3420), Centre National de la Recherche Scientifique (CNRS), Bordeaux, France
| | - Stefan Terjung
- Advanced Light Microscopy Facility, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | | | - Antje Keppler
- Global BioImaging, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
- Euro-BioImaging Bio-Hub, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
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Mannella V, Chaabane L, Canu T, Zanardi A, Raia S, Conti A, Ferrini B, Caricasole A, Musco G, Alessio M. Lipid dysmetabolism in ceruloplasmin-deficient mice revealed both in vivo and ex vivo by MRI, MRS and NMR analyses. FEBS Open Bio 2024; 14:258-275. [PMID: 37986139 PMCID: PMC10839333 DOI: 10.1002/2211-5463.13740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023] Open
Abstract
Ceruloplasmin (Cp) is a ferroxidase that plays a role in cellular iron homeostasis and is mainly expressed in the liver and secreted into the blood. Cp is also produced by adipose tissue, which releases it as an adipokine. Although a dysfunctional interaction of iron with the metabolism of lipids has been associated with several metabolic diseases, the role of Cp in adipose tissue metabolism and in the interplay between hepatocytes and adipocytes has been poorly investigated. We previously found that Cp-deficient (CpKO) mice become overweight and demonstrate adipose tissue accumulation together with liver steatosis during aging, suggestive of lipid dysmetabolism. In the present study, we investigated the lipid alterations which occur during aging in adipose tissue and liver of CpKO and wild-type mice both in vivo and ex vivo. During aging of CpKO mice, we observed adipose tissue accumulation and liver lipid deposition, both of which are associated with macrophage infiltration. Liver lipid deposition was characterized by accumulation of triglycerides, fatty acids and ω-3 fatty acids, as well as by a switch from unsaturated to saturated fatty acids, which is characteristic of lipid storage. Liver steatosis was preceded by iron deposition and macrophage infiltration, and this was observed to be already occurring in younger CpKO mice. The accumulation of ω-3 fatty acids, which can only be acquired through diet, was associated with body weight increase in CpKO mice despite food intake being equal to that of wild-type mice, thus underlining the alterations in lipid metabolism/catabolism in Cp-deficient animals.
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Affiliation(s)
- Valeria Mannella
- COSR‐Centre for Omics SciencesIRCCS‐San Raffaele HospitalMilanoItaly
| | - Linda Chaabane
- Preclinical Imaging, Experimental Imaging CentreIRCCS‐San Raffaele HospitalMilanoItaly
- Present address:
LC, Euro‐BioImaging ERIC, Med‐Hub section, Institute of Biostructures and Bioimaging (IBB)Italian National Research Council (CNR)TorinoItaly
- Present address:
SR, Deloitte & Touche SpAMilanoItaly
| | - Tamara Canu
- Preclinical Imaging, Experimental Imaging CentreIRCCS‐San Raffaele HospitalMilanoItaly
| | - Alan Zanardi
- Proteome Biochemistry, COSR‐Centre for Omics SciencesIRCCS‐San Raffaele HospitalMilanoItaly
| | - Sara Raia
- Proteome Biochemistry, COSR‐Centre for Omics SciencesIRCCS‐San Raffaele HospitalMilanoItaly
- Present address:
LC, Euro‐BioImaging ERIC, Med‐Hub section, Institute of Biostructures and Bioimaging (IBB)Italian National Research Council (CNR)TorinoItaly
- Present address:
SR, Deloitte & Touche SpAMilanoItaly
| | - Antonio Conti
- Proteome Biochemistry, COSR‐Centre for Omics SciencesIRCCS‐San Raffaele HospitalMilanoItaly
| | - Barbara Ferrini
- Proteome Biochemistry, COSR‐Centre for Omics SciencesIRCCS‐San Raffaele HospitalMilanoItaly
| | - Andrea Caricasole
- Department of Research & Innovation, Kedrion S.p.A.Loc BolognanaGallicanoItaly
| | - Giovanna Musco
- Biomolecular Nuclear Magnetic Resonance, Division of Genetics and Cell BiologyIRCCS‐San Raffaele HospitalMilanoItaly
| | - Massimo Alessio
- Proteome Biochemistry, COSR‐Centre for Omics SciencesIRCCS‐San Raffaele HospitalMilanoItaly
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3
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Boutros M, Baumann M, Bigas A, Chaabane L, Guérin J, Habermann JK, Jobard A, Pelicci PG, Stegle O, Tonon G, Valencia A, Winkler EC, Blanc P, De Maria R, Medema RH, Nagy P, Tabernero J, Solary E. UNCAN.eu: Toward a European Federated Cancer Research Data Hub. Cancer Discov 2024; 14:30-35. [PMID: 38213296 PMCID: PMC10784740 DOI: 10.1158/2159-8290.cd-23-1111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
To enable a collective effort that generates a new level of UNderstanding CANcer (UNCAN.eu) [Cancer Discov (2022) 12 (11): OF1], the European Union supports the creation of a sustainable platform that connects cancer research across Member States. A workshop hosted in Heidelberg gathered European cancer experts to identify ongoing initiatives that may contribute to building this platform and discuss the governance and long-term evolution of a European Federated Cancer Data Hub.
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Affiliation(s)
- Michael Boutros
- German Cancer Research Center (DKFZ), Division of Signaling and Functional Genomics and Heidelberg University, Medical Faculty Heidelberg, Institute for Human Genetics, Heidelberg, Germany
| | | | - Anna Bigas
- Centro de Investigación Biomedica en Red-Oncología (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
| | - Linda Chaabane
- Euro-BioImaging ERIC, Med-Hub, National Research Council of Italy (CNR), Turin, Italy
| | | | - Jens K. Habermann
- Interdisciplinary Center for Biobanking-Lübeck (ICB-L), University of Lübeck, Lübeck, Germany
| | - Aurélien Jobard
- Institut National du Cancer (INCa), Boulogne Billancourt, France
| | - Pier Giuseppe Pelicci
- Department of Experimental Oncology, IEO European Institute of Oncology IRCCS, Milano, Italy
| | - Oliver Stegle
- DKFZ, Division of Computational Genomics and Systems Genetics, Heidelberg, Germany
- Genome Biology Unit, European Molecular Biology, Heidelberg, Germany
| | - Giovanni Tonon
- Center for Omics Sciences, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Alfonso Valencia
- Barcelona Supercomputing Center, Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Eva C. Winkler
- National Center for Tumor Diseases (NCT), Heidelberg University, Section Translational Medical Ethics, Heidelberg, Germany
| | | | - Ruggero De Maria
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Rene H. Medema
- Oncode Institute and The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Peter Nagy
- National Institute of Oncology and the National Tumor Biology Laboratory, Budapest, Department of Anatomy and Histology, HUN-REN–UVMB Laboratory of Redox Biology Research Group, University of Veterinary Medicine, and Chemistry Institute, University of Debrecen, Debrecen, Hungary
| | - Josep Tabernero
- DKFZ, Division of Computational Genomics and Systems Genetics, Heidelberg, Germany
- Vall d'Hebron Hospital Campus & Institute of Oncology (VHIO), Barcelona, Spain
| | - Eric Solary
- Université Paris-Saclay and INSERM, Gustave Roussy Cancer Center, Villejuif, France
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4
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Gatti L, Chirizzi C, Rotta G, Milesi P, Sancho-Albero M, Sebastián V, Mondino A, Santamaría J, Metrangolo P, Chaabane L, Bombelli FB. Pivotal role of the protein corona in the cell uptake of fluorinated nanoparticles with increased sensitivity for 19F-MR imaging. Nanoscale Adv 2023; 5:3749-3760. [PMID: 37441254 PMCID: PMC10334373 DOI: 10.1039/d3na00229b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/07/2023] [Indexed: 07/15/2023]
Abstract
In vivo cell tracking by non-invasive imaging technologies is needed to accelerate the clinical translation of innovative cell-based therapies. In this regard, 19F-MRI has recently gained increased attention for unbiased localization of labeled cells over time. To push forward the use of 19F-MRI for cell tracking, the development of highly performant 19F-probes is required. PLGA-based NPs containing PERFECTA, a multibranched superfluorinated molecule with an optimal MRI profile thanks to its 36 magnetically equivalent fluorine atoms, are promising 19F-MRI probes. In this work we demonstrate the importance of the surface functionalization of these NPs in relation to their interaction with the biological environment, stressing the pivotal role of the formation of the protein corona (PC) in their cellular labelling efficacy. In particular, our studies showed that the formation of PC NPs strongly promotes the cellular internalization of these NPs in microglia cells. We advocate that the formation of PC NPs in the culture medium can be a key element to be used for the optimization of cell labelling with a considerable increase of the detection sensitivity by 19F-MRI.
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Affiliation(s)
- Lodovico Gatti
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta" Politecnico di Milano, 32 Milano 20131 Italy
- Institute of Experimental Neurology (INSpe) and Experimental Imaging Center (CIS), IRCCS San Raffaele Scientific Institute Via Olgettina, 58 Milano 20132 Italy
| | - Cristina Chirizzi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta" Politecnico di Milano, 32 Milano 20131 Italy
| | - Giulia Rotta
- Lymphocyte Activation Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute Via Olgettina, 58 Milan 20132 Italy
| | - Pietro Milesi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta" Politecnico di Milano, 32 Milano 20131 Italy
| | - María Sancho-Albero
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Calle Pedro Cerbuna, 12 Zaragoza 50009 Spain
- Department of Chemical Engineering and Environmental Technologies, University of Zaragoza Calle Pedro Cerbuna, 12 Zaragoza 50009 Spain
- Networking Research Center on Bioengineering Biomaterials and Nanomedicine (CIBER-BBN) Calle Monforte de Lemos, 3-5 Madrid 28029 Spain
| | - Victor Sebastián
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Calle Pedro Cerbuna, 12 Zaragoza 50009 Spain
- Department of Chemical Engineering and Environmental Technologies, University of Zaragoza Calle Pedro Cerbuna, 12 Zaragoza 50009 Spain
- Networking Research Center on Bioengineering Biomaterials and Nanomedicine (CIBER-BBN) Calle Monforte de Lemos, 3-5 Madrid 28029 Spain
| | - Anna Mondino
- Lymphocyte Activation Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute Via Olgettina, 58 Milan 20132 Italy
| | - Jesús Santamaría
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Calle Pedro Cerbuna, 12 Zaragoza 50009 Spain
- Department of Chemical Engineering and Environmental Technologies, University of Zaragoza Calle Pedro Cerbuna, 12 Zaragoza 50009 Spain
- Networking Research Center on Bioengineering Biomaterials and Nanomedicine (CIBER-BBN) Calle Monforte de Lemos, 3-5 Madrid 28029 Spain
| | - Pierangelo Metrangolo
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta" Politecnico di Milano, 32 Milano 20131 Italy
| | - Linda Chaabane
- Institute of Experimental Neurology (INSpe) and Experimental Imaging Center (CIS), IRCCS San Raffaele Scientific Institute Via Olgettina, 58 Milano 20132 Italy
| | - Francesca Baldelli Bombelli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta" Politecnico di Milano, 32 Milano 20131 Italy
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Carli S, Chaabane L, De Rocco G, Albizzati E, Sormonta I, Calligaro S, Bonizzi P, Frasca A, Landsberger N. A comprehensive longitudinal study of magnetic resonance imaging identifies novel features of the Mecp2 deficient mouse brain. Neurobiol Dis 2023; 180:106083. [PMID: 36931532 DOI: 10.1016/j.nbd.2023.106083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/17/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023] Open
Abstract
Rett syndrome (RTT) is a X-linked neurodevelopmental disorder which represents the leading cause of severe incurable intellectual disability in females worldwide. The vast majority of RTT cases are caused by mutations in the X-linked MECP2 gene, and preclinical studies on RTT largely benefit from the use of mouse models of Mecp2, which present a broad spectrum of symptoms phenocopying those manifested by RTT patients. Neurons represent the core targets of the pathology; however, neuroanatomical abnormalities that regionally characterize the Mecp2 deficient mammalian brain remain ill-defined. Neuroimaging techniques, such as MRI and MRS, represent a key approach for assessing in vivo anatomic and metabolic changes in brain. Being non-invasive, these analyses also permit to investigate how the disease progresses over time through longitudinal studies. To foster the biological comprehension of RTT and identify useful biomarkers, we have performed a thorough in vivo longitudinal study of MRI and MRS in Mecp2 deficient mouse brains. Analyses were performed on both genders of two different mouse models of RTT, using an automatic atlas-based segmentation tool that permitted to obtain a detailed and unbiased description of the whole RTT mouse brain. We found that the most robust alteration of the RTT brain consists in an overall reduction of the brain volume. Accordingly, Mecp2 deficiency generally delays brain growth, eventually leading, in heterozygous older animals, to stagnation and/or contraction. Most but not all brain regions participate in the observed deficiency in brain size; similarly, the volumetric defect progresses diversely in different brain areas also depending on the specific Mecp2 genetic lesion and gender. Interestingly, in some regions volumetric defects anticipate overt symptoms, possibly revealing where the pathology originates and providing a useful biomarker for assessing drug efficacy in pre-clinical studies.
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Affiliation(s)
- Sara Carli
- Neuroscience Division, IRCCS San Raffaele Scientific Institute, Milan I-20132, Italy.
| | - Linda Chaabane
- Institute of Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), IRCCS San Raffaele Scientific Institute, Milan I-20132, Italy.
| | - Giuseppina De Rocco
- Neuroscience Division, IRCCS San Raffaele Scientific Institute, Milan I-20132, Italy; Department of Medical Biotechnology and Translational Medicine, University of Milan, Segrate (Milan) I-20090, Italy.
| | - Elena Albizzati
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Segrate (Milan) I-20090, Italy.
| | - Irene Sormonta
- Neuroscience Division, IRCCS San Raffaele Scientific Institute, Milan I-20132, Italy.
| | - Stefano Calligaro
- Neuroscience Division, IRCCS San Raffaele Scientific Institute, Milan I-20132, Italy.
| | - Pietro Bonizzi
- Department of Advanced Computing Sciences, Maastricht University, Maastricht, the Netherlands.
| | - Angelisa Frasca
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Segrate (Milan) I-20090, Italy.
| | - Nicoletta Landsberger
- Neuroscience Division, IRCCS San Raffaele Scientific Institute, Milan I-20132, Italy; Department of Medical Biotechnology and Translational Medicine, University of Milan, Segrate (Milan) I-20090, Italy.
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6
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Sancho-Albero M, Ayaz N, Sebastian V, Chirizzi C, Encinas-Gimenez M, Neri G, Chaabane L, Luján L, Martin-Duque P, Metrangolo P, Santamaría J, Baldelli Bombelli F. Superfluorinated Extracellular Vesicles for In Vivo Imaging by 19F-MRI. ACS Appl Mater Interfaces 2023; 15:8974-8985. [PMID: 36780137 PMCID: PMC9951174 DOI: 10.1021/acsami.2c20566] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/25/2023] [Indexed: 06/01/2023]
Abstract
Extracellular vesicles (EVs) play a crucial role in cell-to-cell communication and have great potential as efficient delivery vectors. However, a better understanding of EV in vivo behavior is hampered by the limitations of current imaging tools. In addition, chemical labels present the risk of altering the EV membrane features and, thus, in vivo behavior. 19F-MRI is a safe bioimaging technique providing selective images of exogenous probes. Here, we present the first example of fluorinated EVs containing PERFECTA, a branched molecule with 36 magnetically equivalent 19F atoms. A PERFECTA emulsion is given to the cells, and PERFECTA-containing EVs are naturally produced. PERFECTA-EVs maintain the physicochemical features, morphology, and biological fingerprint as native EVs but exhibit an intense 19F-NMR signal and excellent 19F relaxation times. In vivo 19F-MRI and tumor-targeting capabilities of stem cell-derived PERFECTA-EVs are also proved. We propose PERFECTA-EVs as promising biohybrids for imaging biodistribution and delivery of EVs throughout the body.
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Affiliation(s)
- María Sancho-Albero
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Department
of Chemical Engineering and Environmental Technologies, University of Zaragoza, 50009 Zaragoza, Spain
- Networking
Research Center on Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Nazeeha Ayaz
- Laboratory
of Supramolecular and Bio-Nanomaterials (SupraBioNano Lab), Department
of Chemistry, Materials and Chemical Engineering, “Giulio Natta”, Politecnico di Milano, 20131 Milan, Italy
| | - Victor Sebastian
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Department
of Chemical Engineering and Environmental Technologies, University of Zaragoza, 50009 Zaragoza, Spain
- Networking
Research Center on Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Cristina Chirizzi
- Laboratory
of Supramolecular and Bio-Nanomaterials (SupraBioNano Lab), Department
of Chemistry, Materials and Chemical Engineering, “Giulio Natta”, Politecnico di Milano, 20131 Milan, Italy
- Experimental
Neurology (INSPE) and Experimental Imaging Center (CIS), Neuroscience
Division, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Miguel Encinas-Gimenez
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Department
of Chemical Engineering and Environmental Technologies, University of Zaragoza, 50009 Zaragoza, Spain
- Networking
Research Center on Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Giulia Neri
- Laboratory
of Supramolecular and Bio-Nanomaterials (SupraBioNano Lab), Department
of Chemistry, Materials and Chemical Engineering, “Giulio Natta”, Politecnico di Milano, 20131 Milan, Italy
| | - Linda Chaabane
- Experimental
Neurology (INSPE) and Experimental Imaging Center (CIS), Neuroscience
Division, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Lluís Luján
- Department
of Animal Pathology, University of Zaragoza, 50009 Zaragoza, Spain
- Instituto
Universitario de Investigación Mixto Agroalimentario de Aragón
(IA2), University of Zaragoza, 50009 Zaragoza, Spain
| | - Pilar Martin-Duque
- Networking
Research Center on Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Instituto
Aragonés de Ciencias de la Salud (IACS) /IIS Aragón, Zaragoza 5009, Spain
- Fundación
Araid, 50018 Zaragoza, Spain
| | - Pierangelo Metrangolo
- Laboratory
of Supramolecular and Bio-Nanomaterials (SupraBioNano Lab), Department
of Chemistry, Materials and Chemical Engineering, “Giulio Natta”, Politecnico di Milano, 20131 Milan, Italy
| | - Jesús Santamaría
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Department
of Chemical Engineering and Environmental Technologies, University of Zaragoza, 50009 Zaragoza, Spain
- Networking
Research Center on Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Francesca Baldelli Bombelli
- Laboratory
of Supramolecular and Bio-Nanomaterials (SupraBioNano Lab), Department
of Chemistry, Materials and Chemical Engineering, “Giulio Natta”, Politecnico di Milano, 20131 Milan, Italy
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7
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Chirizzi C, Gatti L, Sancho-Albero M, Sebastian V, Arruebo M, Uson L, Neri G, Santamaria J, Metrangolo P, Chaabane L, Baldelli Bombelli F. Optimization of superfluorinated PLGA nanoparticles for enhanced cell labelling and detection by 19F-MRI. Colloids Surf B Biointerfaces 2022; 220:112932. [DOI: 10.1016/j.colsurfb.2022.112932] [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] [Received: 07/21/2022] [Revised: 09/05/2022] [Accepted: 10/13/2022] [Indexed: 11/07/2022]
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8
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Birocchi F, Cusimano M, Rossari F, Beretta S, Rancoita PMV, Ranghetti A, Colombo S, Costa B, Angel P, Sanvito F, Callea M, Norata R, Chaabane L, Canu T, Spinelli A, Genua M, Ostuni R, Merelli I, Coltella N, Naldini L. Targeted inducible delivery of immunoactivating cytokines reprograms glioblastoma microenvironment and inhibits growth in mouse models. Sci Transl Med 2022; 14:eabl4106. [DOI: 10.1126/scitranslmed.abl4106] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Glioblastoma multiforme (GBM) is the most common and lethal brain tumor characterized by a strongly immunosuppressive tumor microenvironment (TME) that represents a barrier also for the development of effective immunotherapies. The possibility to revert this hostile TME by immunoactivating cytokines is hampered by the severe toxicity associated with their systemic administration. Here, we exploited a lentiviral vector–based platform to engineer hematopoietic stem cells ex vivo with the aim of releasing, via their tumor-infiltrating monocyte/macrophage progeny, interferon-α (IFN-α) or interleukin-12 (IL-12) at the tumor site with spatial and temporal selectivity. Taking advantage of a syngeneic GBM mouse model, we showed that inducible release of IFN-α within the TME achieved robust tumor inhibition up to eradication and outperformed systemic treatment with the recombinant protein in terms of efficacy, tolerability, and specificity. Single-cell RNA sequencing of the tumor immune infiltrate revealed reprogramming of the immune microenvironment toward a proinflammatory and antitumoral state associated with loss of a macrophage subpopulation shown to be associated with poor prognosis in human GBM. The spatial and temporal control of IL-12 release was critical to overcome an otherwise lethal hematopoietic toxicity while allowing to fully exploit its antitumor activity. Overall, our findings demonstrate a potential therapeutic approach for GBM and set the bases for a recently launched first-in-human clinical trial in patients with GBM.
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Affiliation(s)
- Filippo Birocchi
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
- Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Melania Cusimano
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Federico Rossari
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
- Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Stefano Beretta
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
- Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Paola M. V. Rancoita
- CUSSB-University Center for Statistics in the Biomedical Sciences, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Anna Ranghetti
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Stefano Colombo
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Barbara Costa
- Division of Signal Transduction and Growth Control, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Peter Angel
- Division of Signal Transduction and Growth Control, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Francesca Sanvito
- Pathology Unit, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Marcella Callea
- Pathology Unit, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Rossana Norata
- GLP Test Facility, San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Linda Chaabane
- Experimental Imaging Center, Preclinical Imaging Facility, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Tamara Canu
- Experimental Imaging Center, Preclinical Imaging Facility, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Antonello Spinelli
- Experimental Imaging Center, Preclinical Imaging Facility, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Marco Genua
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Renato Ostuni
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
- Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Ivan Merelli
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
- National Research Council, Institute for Biomedical Technologies, 20054 Segrate, Italy
| | - Nadia Coltella
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Luigi Naldini
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
- Vita-Salute San Raffaele University, 20132 Milan, Italy
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9
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Castoldi V, Marenna S, Huang SC, d'Isa R, Chaabane L, Comi G, Leocani L. Dose-dependent effect of myelin oligodendrocyte glycoprotein on visual function and optic nerve damage in experimental autoimmune encephalomyelitis. J Neurosci Res 2022; 100:855-868. [PMID: 35043454 DOI: 10.1002/jnr.25007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 11/29/2021] [Accepted: 12/21/2021] [Indexed: 11/08/2022]
Abstract
Female Dark Agouti rats were immunized with increasing doses of myelin oligodendrocyte glycoprotein (MOG) to develop experimental autoimmune encephalomyelitis (EAE), a preclinical model of multiple sclerosis. Typical EAE motor impairments were assessed daily and noninvasive visual evoked potentials (VEPs) were recorded at baseline and 5 weeks after immunization, with final histopathology of optic nerves (ONs). Immunized rats exhibited a relapsing-remitting clinical course. Both VEP and histological abnormalities were detected in a MOG dose-dependent gradient. Increasing MOG dosage augmented visual function impairment in EAE, which could be monitored with VEP recording to assess demyelination and axonal loss along ONs.
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Affiliation(s)
- Valerio Castoldi
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Silvia Marenna
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Su-Chun Huang
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Raffaele d'Isa
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Linda Chaabane
- INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Giancarlo Comi
- Vita-Salute San Raffaele University, Milan, Italy.,Casa di Cura del Policlinico, Milan, Italy
| | - Letizia Leocani
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy.,INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
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10
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Rivellini C, Porrello E, Dina G, Mrakic-Sposta S, Vezzoli A, Bacigaluppi M, Gullotta GS, Chaabane L, Leocani L, Marenna S, Colombo E, Farina C, Newcombe J, Nave KA, Pardi R, Quattrini A, Previtali SC. JAB1 deletion in oligodendrocytes causes senescence-induced inflammation and neurodegeneration in mice. J Clin Invest 2021; 132:145071. [PMID: 34874913 PMCID: PMC8803330 DOI: 10.1172/jci145071] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 11/30/2021] [Indexed: 11/17/2022] Open
Abstract
Oligodendrocytes are the primary target of demyelinating disorders and progressive neurodegenerative changes may evolve in the CNS. DNA damage and oxidative stress are considered key pathogenic events, but the underlying molecular mechanisms remain unclear. Moreover, animal models do not fully recapitulate human diseases, complicating the path to effective treatments. Here we report that mice with cell autonomous deletion of the nuclear COP9 signalosome component CSN5 (JAB1) in oligodendrocytes develop DNA damage and defective DNA repair in myelinating glial cells. Interestingly, oligodendrocytes lacking JAB1 expression underwent a senescence-like phenotype that fostered chronic inflammation and oxidative stress. These mutants developed progressive CNS demyelination, microglia inflammation and neurodegeneration, with severe motor deficits and premature death. Notably, blocking microglia inflammation did not prevent neurodegeneration, whereas the deletion of p21CIP1 but not p16INK4a pathway ameliorated the disease. We suggest that senescence is key to sustaining neurodegeneration in demyelinating disorders and may be considered a potential therapeutic target.
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Affiliation(s)
- Cristina Rivellini
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Emanuela Porrello
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giorgia Dina
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Simona Mrakic-Sposta
- Institute of Clinical Physiology National Research Council, ICF-CNR, Milan, Italy
| | - Alessandra Vezzoli
- Institute of Clinical Physiology National Research Council, ICF-CNR, Milan, Italy
| | - Marco Bacigaluppi
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giorgia Serena Gullotta
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Linda Chaabane
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Letizia Leocani
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Silvia Marenna
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Emanuela Colombo
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Cinthia Farina
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Jia Newcombe
- Department of Neuroinflammation, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Klaus-Armin Nave
- Department of Neurogenetics, Max Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Ruggero Pardi
- Division of Immunology, Transplantation, and Infectious Disease, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Angelo Quattrini
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Stefano C Previtali
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
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11
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Abstract
Purpose To test whether an acute corneal injury activates a proinflammatory reflex, involving corneal sensory nerves expressing substance P (SP), the hypothalamus, and the sympathetic nervous system. Methods C57BL6/N (wild-type [WT]) and SP-depleted B6.Cg-Tac1tm1Bbm/J (TAC1-KO) mice underwent bilateral corneal alkali burn. One group of WT mice received oxybuprocaine before alkali burn. One hour later, hypothalamic neuronal activity was assessed in vivo by magnetic resonance imaging and ex vivo by cFOS staining. Some animals were followed up for 14 days to evaluate corneal transparency and inflammation. Tyrosine hydroxylase (TH), neurokinin 1 receptor (NK1R), and neuronal nitric oxide synthase (nNOS) expression was assessed in brain sections. Sympathetic neuron activation was evaluated in the superior cervical ganglion (SCG). CD45+ leukocytes were quantified in whole-mounted corneas. Noradrenaline (NA) was evaluated in the cornea and bone marrow. Results Alkali burn acutely induced neuronal activation in the trigeminal ganglion, paraventricular hypothalamus, and lateral hypothalamic area (PVH and LHA), which was significantly lower in TAC1-KO mice (P < 0.05). Oxybuprocaine application similarly reduced neuronal activation (P < 0.05). TAC1-KO mice showed a reduced number of cFOS+/NK1R+/TH+ presympathetic neurons (P < 0.05) paralleled by higher nNOS expression (P < 0.05) in both PVH and LHA. A decrease in activated sympathetic neurons in the SCG and NA levels in both cornea/bone marrow and reduced corneal leukocyte infiltration (P < 0.05) in TAC1-KO mice were found. Finally, 14 days after injury, TAC1-KO mice showed reduced corneal opacity and inflammation (P < 0.05). Conclusions Our findings suggest that stimulation of corneal sensory nerves containing SP activates presympathetic neurons located in the PVH and LHA, leading to sympathetic activation, peripheral release of NA, and corneal inflammation.
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Affiliation(s)
- Romina Mayra Lasagni Vitar
- Cornea and Ocular Surface Disease Unit, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Philippe Fonteyne
- Cornea and Ocular Surface Disease Unit, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Linda Chaabane
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Paolo Rama
- Cornea and Ocular Surface Disease Unit, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giulio Ferrari
- Cornea and Ocular Surface Disease Unit, Eye Repair Lab, IRCCS San Raffaele Scientific Institute, Milan, Italy
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12
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Chirizzi C, Morasso C, Caldarone AA, Tommasini M, Corsi F, Chaabane L, Vanna R, Bombelli FB, Metrangolo P. A Bioorthogonal Probe for Multiscale Imaging by 19F-MRI and Raman Microscopy: From Whole Body to Single Cells. J Am Chem Soc 2021; 143:12253-12260. [PMID: 34320323 PMCID: PMC8397317 DOI: 10.1021/jacs.1c05250] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Molecular imaging
techniques are essential tools for better investigating
biological processes and detecting disease biomarkers with improvement
of both diagnosis and therapy monitoring. Often, a single imaging
technique is not sufficient to obtain comprehensive information at
different levels. Multimodal diagnostic probes are key tools to enable
imaging across multiple scales. The direct registration of in vivo imaging markers with ex vivo imaging
at the cellular level with a single probe is still challenging. Fluorinated
(19F) probes have been increasingly showing promising potentialities
for in vivo cell tracking by 19F-MRI.
Here we present the unique features of a bioorthogonal 19F-probe that enables direct signal correlation of MRI with Raman
imaging. In particular, we reveal the ability of PERFECTA, a superfluorinated
molecule, to exhibit a remarkable intense Raman signal distinct from
cell and tissue fingerprints. Therefore, PERFECTA combines in a single
molecule excellent characteristics for both macroscopic in
vivo19F-MRI, across the whole body, and microscopic
imaging at tissue and cellular levels by Raman imaging.
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Affiliation(s)
- Cristina Chirizzi
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy
| | - Carlo Morasso
- Istituti Clinici Scientifici Maugeri IRCCS, Via S. Maugeri 4, 27100 Pavia, Italy
| | | | - Matteo Tommasini
- Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy
| | - Fabio Corsi
- Istituti Clinici Scientifici Maugeri IRCCS, Via S. Maugeri 4, 27100 Pavia, Italy.,Department of Biomedical and Clinical Sciences "Luigi Sacco", Università di Milano, Via G. B. Grassi 74, 20157 Milan, Italy
| | - Linda Chaabane
- Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), Neuroscience Division, IRCCS Ospedale San Raffaele, Via Olgettina 60, 20132 Milan, Italy
| | - Renzo Vanna
- CNR-Institute for Photonics and Nanotechnologies (IFN-CNR), Department of Physics, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milan, Italy
| | - Francesca Baldelli Bombelli
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy
| | - Pierangelo Metrangolo
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milan, Italy
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13
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Moriggi M, Belloli S, Barbacini P, Murtaj V, Torretta E, Chaabane L, Canu T, Penati S, Malosio ML, Esposito A, Gelfi C, Moresco RM, Capitanio D. Skeletal Muscle Proteomic Profile Revealed Gender-Related Metabolic Responses in a Diet-Induced Obesity Animal Model. Int J Mol Sci 2021; 22:ijms22094680. [PMID: 33925229 PMCID: PMC8125379 DOI: 10.3390/ijms22094680] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/15/2021] [Accepted: 04/27/2021] [Indexed: 02/08/2023] Open
Abstract
Obesity is a chronic, complex pathology associated with a risk of developing secondary pathologies, including cardiovascular diseases, cancer, type 2 diabetes (T2DM) and musculoskeletal disorders. Since skeletal muscle accounts for more than 70% of total glucose disposal, metabolic alterations are strictly associated with the onset of insulin resistance and T2DM. The present study relies on the proteomic analysis of gastrocnemius muscle from 15 male and 15 female C56BL/J mice fed for 14 weeks with standard, 45% or 60% high-fat diets (HFD) adopting a label-free LC–MS/MS approach followed by bioinformatic pathway analysis. Results indicate changes in males due to HFD, with increased muscular stiffness (Col1a1, Col1a2, Actb), fiber-type switch from slow/oxidative to fast/glycolytic (decreased Myh7, Myl2, Myl3 and increased Myh2, Mylpf, Mybpc2, Myl1), increased oxidative stress and mitochondrial dysfunction (decreased respiratory chain complex I and V and increased complex III subunits). At variance, females show few alterations and activation of compensatory mechanisms to counteract the increase of fatty acids. Bioinformatics analysis allows identifying upstream molecules involved in regulating pathways identified at variance in our analysis (Ppargc1a, Pparg, Cpt1b, Clpp, Tp53, Kdm5a, Hif1a). These findings underline the presence of a gender-specific response to be considered when approaching obesity and related comorbidities.
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Affiliation(s)
- Manuela Moriggi
- Gastroenterology and Digestive Endoscopy Unit, IRCCS Policlinico San Donato, 20097 San Donato Milanese, Italy;
| | - Sara Belloli
- Institute of Molecular Bioimaging and Physiology, CNR, 20090 Segrate, Italy; (S.B.); (R.M.M.)
- Department of Nuclear Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
| | - Pietro Barbacini
- Department of Biomedical Sciences for Health, University of Milan, 20090 Segrate, Italy; (P.B.); (C.G.)
| | - Valentina Murtaj
- Department of Nuclear Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
- PhD Program in Neuroscience, School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy
| | | | - Linda Chaabane
- Experimental Imaging Center, Preclinical Imaging Facility, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (L.C.); (T.C.); (A.E.)
| | - Tamara Canu
- Experimental Imaging Center, Preclinical Imaging Facility, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (L.C.); (T.C.); (A.E.)
| | - Silvia Penati
- Laboratory of Pharmacology and Brain Pathology, Neuro Center, IRCCS Humanitas Research Hospital, 20089 Rozzano, Italy; (S.P.); (M.L.M.)
- Institute of Neuroscience, Humanitas Mirasole S.p.A, 20089 Rozzano, Italy
| | - Maria Luisa Malosio
- Laboratory of Pharmacology and Brain Pathology, Neuro Center, IRCCS Humanitas Research Hospital, 20089 Rozzano, Italy; (S.P.); (M.L.M.)
- Institute of Neuroscience, Humanitas Mirasole S.p.A, 20089 Rozzano, Italy
| | - Antonio Esposito
- Experimental Imaging Center, Preclinical Imaging Facility, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (L.C.); (T.C.); (A.E.)
- Experimental Imaging Center, Radiology Department, IRCCS San Raffaele Scientific Institute, School of Medicine, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Cecilia Gelfi
- Department of Biomedical Sciences for Health, University of Milan, 20090 Segrate, Italy; (P.B.); (C.G.)
- IRCCS Istituto Ortopedico Galeazzi, 20161 Milan, Italy;
| | - Rosa Maria Moresco
- Institute of Molecular Bioimaging and Physiology, CNR, 20090 Segrate, Italy; (S.B.); (R.M.M.)
- Department of Nuclear Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
- Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy
| | - Daniele Capitanio
- Department of Biomedical Sciences for Health, University of Milan, 20090 Segrate, Italy; (P.B.); (C.G.)
- Correspondence: ; Tel.: +39-0250330411
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14
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Carli S, Chaabane L, Butti C, De Palma C, Aimar P, Salio C, Vignoli A, Giustetto M, Landsberger N, Frasca A. In vivo magnetic resonance spectroscopy in the brain of Cdkl5 null mice reveals a metabolic profile indicative of mitochondrial dysfunctions. J Neurochem 2021; 157:1253-1269. [PMID: 33448385 DOI: 10.1111/jnc.15300] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 10/24/2020] [Accepted: 01/07/2021] [Indexed: 12/12/2022]
Abstract
Mutations in the X-linked CDKL5 gene cause CDKL5 deficiency disorder (CDD), a severe neurodevelopmental condition mainly characterized by infantile epileptic encephalopathy, intellectual disability, and autistic features. The molecular mechanisms underlying the clinical symptoms remain largely unknown and the identification of reliable biomarkers in animal models will certainly contribute to increase our comprehension of CDD as well as to assess the efficacy of therapeutic strategies. Here, we used different Magnetic Resonance (MR) methods to disclose structural, functional, or metabolic signatures of Cdkl5 deficiency in the brain of adult mice. We found that loss of Cdkl5 does not cause cerebral atrophy but affects distinct brain areas, particularly the hippocampus. By in vivo proton-MR spectroscopy (MRS), we revealed in the Cdkl5 null brain a metabolic dysregulation indicative of mitochondrial dysfunctions. Accordingly, we unveiled a significant reduction in ATP levels and a decrease in the expression of complex IV of mitochondrial electron transport chain. Conversely, the number of mitochondria appeared preserved. Importantly, we reported a significant defect in the activation of one of the major regulators of cellular energy balance, the adenosine monophosphate-activated protein kinase (AMPK), that might contribute to the observed metabolic impairment and become an interesting therapeutic target for future preclinical trials. In conclusion, MRS revealed in the Cdkl5 null brain the presence of a metabolic dysregulation suggestive of a mitochondrial dysfunction that permitted to foster our comprehension of Cdkl5 deficiency and brought our interest towards targeting mitochondria as therapeutic strategy for CDD.
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Affiliation(s)
- Sara Carli
- Neuroscience Division, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Linda Chaabane
- Institute of Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Clarissa Butti
- Neuroscience Division, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Molecular Nociception Group, Wolfson Institute for Biomedical Research (WIBR), University College London, London, UK
| | - Clara De Palma
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Segrate (Milan), Italy
| | - Patrizia Aimar
- Department of Veterinary Sciences, University of Turin, Grugliasco, Italy
| | - Chiara Salio
- Department of Veterinary Sciences, University of Turin, Grugliasco, Italy
| | - Aglaia Vignoli
- Epilepsy Center-Child Neuropsychiatric Unit, ASST Santi Paolo e Carlo, Department of Health Sciences, University of Milan, Milan, Italy
| | - Maurizio Giustetto
- Department of Neuroscience, University of Turin, Turin, Italy.,National Institute of Neuroscience-Italy, Turin, Italy
| | - Nicoletta Landsberger
- Neuroscience Division, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Department of Medical Biotechnology and Translational Medicine, University of Milan, Segrate (Milan), Italy
| | - Angelisa Frasca
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Segrate (Milan), Italy
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15
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Neri G, Mion G, Pizzi A, Celentano W, Chaabane L, Chierotti MR, Gobetto R, Li M, Messa P, De Campo F, Cellesi F, Metrangolo P, Baldelli Bombelli F. Fluorinated PLGA Nanoparticles for Enhanced Drug Encapsulation and 19 F NMR Detection. Chemistry 2020; 26:10057-10063. [PMID: 32515857 DOI: 10.1002/chem.202002078] [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: 04/28/2020] [Revised: 06/08/2020] [Indexed: 12/13/2022]
Abstract
In the continuous search for multimodal systems with combined diagnostic and therapeutic functions, several efforts have been made to develop multifunctional drug delivery systems. In this work, through a covalent approach, a new class of fluorinated poly(lactic-co-glycolic acid) co-polymers (F-PLGA) were designed that contain an increasing number of magnetically equivalent fluorine atoms. In particular, two novel compounds, F3 -PLGA and F9 -PLGA, were synthesized and their chemical structure and thermal stability were analyzed by solution NMR, DSC, and TGA. The obtained F-PLGA compounds were proven to form in aqueous solution colloidal stable nanoparticles (NPs) displaying a strong 19 F NMR signal. The fluorinated NPs also showed an enhanced ability to load hydrophobic drugs containing fluorine atoms compared to analogous pristine PLGA NPs. Preliminary in vitro studies showed high cell viability and the NP ability to intracellularly deliver and release a functioning drug.
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Affiliation(s)
- Giulia Neri
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, V. Luigi Mancinelli, 20131, Milan, Italy.,Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, V.le F. Stagno d'Alcontres, 31, 98166, Messina, Italy
| | - Giuliana Mion
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, V. Luigi Mancinelli, 20131, Milan, Italy
| | - Andrea Pizzi
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, V. Luigi Mancinelli, 20131, Milan, Italy
| | - Wanda Celentano
- Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, V. Luigi Mancinelli, 20131, Milan, Italy
| | - Linda Chaabane
- Institute of Experimental Neurology (INSPE) and Experimental Imaging, Center (CIS), IRCCS San Raffaele Hospital, V. Olgettina, 60, 20132, Milan, Italy
| | - Michele R Chierotti
- Department of Chemistry and NIS Centre, Università di Torino, V. Pietro Giuria, 7, 10125, Turin, Italy
| | - Roberto Gobetto
- Department of Chemistry and NIS Centre, Università di Torino, V. Pietro Giuria, 7, 10125, Turin, Italy
| | - Min Li
- Renal Research Laboratory, Fondazione IRCCS Ca" Granda Ospedale Maggiore Policlinico, V. Francesco Sforza, 35, 20122, Milan, Italy
| | - Piergiorgio Messa
- Renal Research Laboratory, Fondazione IRCCS Ca" Granda Ospedale Maggiore Policlinico, V. Francesco Sforza, 35, 20122, Milan, Italy
| | - Floryan De Campo
- Solvay Specialty Polymers, V. Lombardia, 20, Bollate, 20021, Milan, Italy
| | - Francesco Cellesi
- Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, V. Luigi Mancinelli, 20131, Milan, Italy
| | - Pierangelo Metrangolo
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, V. Luigi Mancinelli, 20131, Milan, Italy
| | - Francesca Baldelli Bombelli
- Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, V. Luigi Mancinelli, 20131, Milan, Italy
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16
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Celentano W, Neri G, Distante F, Li M, Messa P, Chirizzi C, Chaabane L, De Campo F, Metrangolo P, Baldelli Bombelli F, Cellesi F. Design of fluorinated hyperbranched polyether copolymers for 19F MRI nanotheranostics. Polym Chem 2020. [DOI: 10.1039/d0py00393j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
19F MRI contrast agents and drug nanocarriers based on fluorinated hyperbranched polyether copolymers.
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Affiliation(s)
- Wanda Celentano
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | - Giulia Neri
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | - Francesco Distante
- ETH Zurich
- Department of Chemistry and Applied Biosciences
- Institute of Chemical and Bioengineering
- CH-8093 Zurich
- Switzerland
| | - Min Li
- Renal Research Laboratory
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico
- 20122 Milan
- Italy
| | - Piergiorgio Messa
- Renal Research Laboratory
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico
- 20122 Milan
- Italy
| | - Cristina Chirizzi
- Institute of Experimental Neurology (INSPE) and Imaging (CIS)
- IRCCS San Raffaele Scientific Institute
- I-20132 Milan
- Italy
| | - Linda Chaabane
- Institute of Experimental Neurology (INSPE) and Imaging (CIS)
- IRCCS San Raffaele Scientific Institute
- I-20132 Milan
- Italy
| | | | - Pierangelo Metrangolo
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
| | | | - Francesco Cellesi
- Dipartimento di Chimica
- Materiali ed Ingegneria Chimica “G. Natta”
- Politecnico di Milano
- 20131 Milan
- Italy
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Castoldi V, Marenna S, d'Isa R, Huang SC, De Battista D, Chirizzi C, Chaabane L, Kumar D, Boschert U, Comi G, Leocani L. Non-invasive visual evoked potentials to assess optic nerve involvement in the dark agouti rat model of experimental autoimmune encephalomyelitis induced by myelin oligodendrocyte glycoprotein. Brain Pathol 2019; 30:137-150. [PMID: 31267597 DOI: 10.1111/bpa.12762] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 06/25/2019] [Indexed: 12/22/2022] Open
Abstract
Experimental autoimmune encephalomyelitis (EAE) is the primary disease model of multiple sclerosis (MS), one of the most diffused neurological diseases characterized by fatigue, muscle weakness, vision loss, anxiety and depression. EAE can be induced through injection of myelin peptides to susceptible mouse or rat strains. In particular, EAE elicited by the autoimmune reaction against myelin oligodendrocyte glycoprotein (MOG) presents the common features of human MS: inflammation, demyelination and axonal loss. Optic neuritis affects visual pathways in both MS and in several EAE models. Neurophysiological evaluation through visual evoked potential (VEP) recording is useful to check visual pathway dysfunctions and to test the efficacy of innovative treatments against optic neuritis. For this purpose, we investigate the extent of VEP abnormalities in the dark agouti (DA) rat immunized with MOG, which develops a relapsing-remitting disease course. Together with the detection of motor signs, we acquired VEPs during both early and late stages of EAE, taking advantage of a non-invasive recording procedure that allows long follow-up studies. The validation of VEP outcomes was determined by comparison with ON histopathology, aimed at revealing inflammation, demyelination and nerve fiber loss. Our results indicate that the first VEP latency delay in MOG-EAE DA rats appeared before motor deficits and were mainly related to an inflammatory state. Subsequent VEP delays, detected during relapsing EAE phases, were associated with a combination of inflammation, demyelination and axonal loss. Moreover, DA rats with atypical EAE clinical course tested at extremely late time points, manifested abnormal VEPs although motor signs were mild. Overall, our data demonstrated that non-invasive VEPs are a powerful tool to detect visual involvement at different stages of EAE, prompting their validation as biomarkers to test novel treatments against MS optic neuritis.
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Affiliation(s)
- Valerio Castoldi
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
| | - Silvia Marenna
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
| | - Raffaele d'Isa
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Su-Chun Huang
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Davide De Battista
- INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Cristina Chirizzi
- INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Linda Chaabane
- INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy
| | - Deepak Kumar
- EMD Serono Research and Development Institute, Billerica, MA
| | - Ursula Boschert
- Ares Trading S.A., Affiliate of Merck Serono S.A, Eysins, Switzerland
| | - Giancarlo Comi
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
| | - Letizia Leocani
- Experimental Neurophysiology Unit, INSPE - Institute of Experimental Neurology, San Raffaele Scientific Institute, Milan, Italy.,University Vita-Salute San Raffaele, Milan, Italy
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18
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Chirizzi C, De Battista D, Tirotta I, Metrangolo P, Comi G, Bombelli FB, Chaabane L. Multispectral MRI with Dual Fluorinated Probes to Track Mononuclear Cell Activity in Mice. Radiology 2019; 291:351-357. [PMID: 30888930 DOI: 10.1148/radiol.2019181073] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background MRI with fluorine 19 (19F) probes has shown an ability to track immune cell activity with a specific, stable, and quantitative signal. In addition, the chemical shift differences of selected 19F probes make dual-probe imaging possible. To improve 19F MRI sensitivity for dual-probe imaging, optimal fluorine probes are needed. Purpose To develop multispectral 19F MRI to image immune cell activity in vivo using 19F nanoparticles of two distinct fluorocarbons. Materials and Methods Both 19F nanoparticles formulated with two fluorocarbons with distinct resonance frequencies and a high fluorine payload were characterized in terms of size, stability, MR profile, and relaxation times at 7 T. 19F MRI sensitivity was tested on labeling cells both in vitro and in vivo in C57BL/6 mice after conditional ablation of myeloid cells through the inhibition of colony-stimulating factor-1 receptor (CSF1Ri) to monitor the change of immune cells phagocytosis. Fluorine MRI data were acquired at the resonance frequency of each fluorocarbon by using a three-dimensional fast spin-echo sequence. Fluorescent dyes were also inserted into 19F nanoparticles to allow flow-cytometric and confocal microscopy analysis of labeled cells. Fluorine signal-to-noise ratio (SNR) was compared by using two-way repeated measures analysis of variance with Bonferroni post hoc correction. Results Fluorine MRI demonstrated high sensitivity and high specificity in the imaging of mononuclear cells both in vitro and in vivo. In combination with proton MRI, a map of 19F nuclei from each fluorocarbon was obtained without overlaps or artifacts. In vitro cell viability was unchanged, and 8000 cells with a high SNR (>8) were detected. In vivo high fluorine signal was observed in the bone marrow (SNR > 15) immediately after CSF1Ri treatment interruption, which correlated with high uptake by neutrophils and monocytes at flow cytometry. Conclusion By assessing in vivo MRI of mononuclear cell phagocytic ability with 19F nanoparticles, MRI with dual 19F probes can effectively track immune cell activity in combination with current MRI protocols. © RSNA, 2019 Online supplemental material is available for this article. See also the editorial by Bulte in this issue.
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Affiliation(s)
- Cristina Chirizzi
- From the Institute of Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), INSPE-DiBiT2, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan 20132, Italy (C.C., D.D.B., G.C., L.C.); and SupraBioNano Laboratory, Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta" Politecnico di Milano, Milan, Italy (I.T., P.M., F.B.B.)
| | - Davide De Battista
- From the Institute of Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), INSPE-DiBiT2, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan 20132, Italy (C.C., D.D.B., G.C., L.C.); and SupraBioNano Laboratory, Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta" Politecnico di Milano, Milan, Italy (I.T., P.M., F.B.B.)
| | - Ilaria Tirotta
- From the Institute of Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), INSPE-DiBiT2, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan 20132, Italy (C.C., D.D.B., G.C., L.C.); and SupraBioNano Laboratory, Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta" Politecnico di Milano, Milan, Italy (I.T., P.M., F.B.B.)
| | - Pierangelo Metrangolo
- From the Institute of Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), INSPE-DiBiT2, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan 20132, Italy (C.C., D.D.B., G.C., L.C.); and SupraBioNano Laboratory, Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta" Politecnico di Milano, Milan, Italy (I.T., P.M., F.B.B.)
| | - Giancarlo Comi
- From the Institute of Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), INSPE-DiBiT2, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan 20132, Italy (C.C., D.D.B., G.C., L.C.); and SupraBioNano Laboratory, Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta" Politecnico di Milano, Milan, Italy (I.T., P.M., F.B.B.)
| | - Francesca Baldelli Bombelli
- From the Institute of Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), INSPE-DiBiT2, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan 20132, Italy (C.C., D.D.B., G.C., L.C.); and SupraBioNano Laboratory, Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta" Politecnico di Milano, Milan, Italy (I.T., P.M., F.B.B.)
| | - Linda Chaabane
- From the Institute of Experimental Neurology (INSPE) and Experimental Imaging Center (CIS), INSPE-DiBiT2, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan 20132, Italy (C.C., D.D.B., G.C., L.C.); and SupraBioNano Laboratory, Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta" Politecnico di Milano, Milan, Italy (I.T., P.M., F.B.B.)
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Castoldi V, Marenna S, Santangelo R, d'Isa R, Cursi M, Chaabane L, Quattrini A, Comi G, Leocani L. Optic nerve involvement in experimental autoimmune encephalomyelitis to homologous spinal cord homogenate immunization in the dark agouti rat. J Neuroimmunol 2018; 325:1-9. [PMID: 30340030 DOI: 10.1016/j.jneuroim.2018.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 07/25/2018] [Revised: 09/18/2018] [Accepted: 09/19/2018] [Indexed: 12/22/2022]
Abstract
Dark-Agouti rats were immunized with spinal cord homogenate to develop Experimental Autoimmune Encephalomyelitis, a model of multiple sclerosis. We assessed motor signs and recorded VEPs for five or eight weeks with epidural or epidermal electrodes, respectively, with final histopathology of optic nerves (ONs). Injected rats exhibited motor deficits a week after immunization. VEP delays arose from the 2nd to the 5th week, when a recovery occurred in epidermal-recorded rats. ON damage appeared in epidural-, but not in epidermal-recorded rats, probably due to a remyelination process. VEP could be exploited as neurophysiological marker to test novel treatments against neurodegeneration involving ONs.
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Affiliation(s)
- Valerio Castoldi
- San Raffaele Scientific Institute, via Olgettina 60, 20132 Milan, Italy
| | - Silvia Marenna
- San Raffaele Scientific Institute, via Olgettina 60, 20132 Milan, Italy
| | | | - Raffaele d'Isa
- San Raffaele Scientific Institute, via Olgettina 60, 20132 Milan, Italy
| | - Marco Cursi
- San Raffaele Scientific Institute, via Olgettina 60, 20132 Milan, Italy
| | - Linda Chaabane
- San Raffaele Scientific Institute, via Olgettina 60, 20132 Milan, Italy
| | - Angelo Quattrini
- San Raffaele Scientific Institute, via Olgettina 60, 20132 Milan, Italy
| | - Giancarlo Comi
- San Raffaele Scientific Institute, via Olgettina 60, 20132 Milan, Italy
| | - Letizia Leocani
- San Raffaele Scientific Institute, via Olgettina 60, 20132 Milan, Italy.
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20
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Gazzerro E, Baratto S, Assereto S, Baldassari S, Panicucci C, Raffaghello L, Scudieri P, De Battista D, Fiorillo C, Volpi S, Chaabane L, Malnati M, Messina G, Bruzzone S, Traggiai E, Grassi F, Minetti C, Bruno C. The Danger Signal Extracellular ATP Is Involved in the Immunomediated Damage of α-Sarcoglycan-Deficient Muscular Dystrophy. Am J Pathol 2018; 189:354-369. [PMID: 30448410 DOI: 10.1016/j.ajpath.2018.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 09/28/2018] [Accepted: 10/16/2018] [Indexed: 02/07/2023]
Abstract
In muscular dystrophies, muscle membrane fragility results in a tissue-specific increase of danger-associated molecular pattern molecules (DAMPs) and infiltration of inflammatory cells. The DAMP extracellular ATP (eATP) released by dying myofibers steadily activates muscle and immune purinergic receptors exerting dual negative effects: a direct damage linked to altered intracellular calcium homeostasis in muscle cells and an indirect toxicity through the triggering of the immune response and inhibition of regulatory T cells. Accordingly, pharmacologic and genetic inhibition of eATP signaling improves the phenotype in models of chronic inflammatory diseases. In α-sarcoglycanopathy, eATP effects may be further amplified because α-sarcoglycan extracellular domain binds eATP and displays an ecto-ATPase activity, thus controlling eATP concentration at the cell surface and attenuating the magnitude and/or the duration of eATP-induced signals. Herein, we show that in vivo blockade of the eATP/P2X purinergic pathway by a broad-spectrum P2X receptor-antagonist delayed the progression of the dystrophic phenotype in α-sarcoglycan-null mice. eATP blockade dampened the muscular inflammatory response and enhanced the recruitment of forkhead box protein P3-positive immunosuppressive regulatory CD4+ T cells. The improvement of the inflammatory features was associated with increased strength, reduced necrosis, and limited expression of profibrotic factors, suggesting that pharmacologic purinergic antagonism, altering the innate and adaptive immune component in muscle infiltrates, might provide a therapeutic approach to slow disease progression in α-sarcoglycanopathy.
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Affiliation(s)
- Elisabetta Gazzerro
- Pediatric Neurology and Muscle Disease Unit, Istituto Giannina Gaslini, Genova, Italy; Charité Universität-Experimental and Clinical Research Center, Berlin, Germany.
| | - Serena Baratto
- Center of Translational and Experimental Myology, Istituto Giannina Gaslini, Genova, Italy
| | - Stefania Assereto
- Pediatric Neurology and Muscle Disease Unit, Istituto Giannina Gaslini, Genova, Italy
| | - Simona Baldassari
- Pediatric Neurology and Muscle Disease Unit, Istituto Giannina Gaslini, Genova, Italy
| | - Chiara Panicucci
- Center of Translational and Experimental Myology, Istituto Giannina Gaslini, Genova, Italy
| | - Lizzia Raffaghello
- Center of Translational and Experimental Myology, Istituto Giannina Gaslini, Genova, Italy; Stem Cell Laboratory and Cell Therapy Center, Istituto Giannina Gaslini, Genova, Italy
| | - Paolo Scudieri
- Telethon Institute of Genetics and Medicine, Napoli, Italy
| | - Davide De Battista
- Unit of Human Virology, Division of Immunology, Transplantation and Infectious Disease, Ospedale San Raffaele, Milano, Italy
| | - Chiara Fiorillo
- Pediatric Neurology and Muscle Disease Unit, Istituto Giannina Gaslini, Genova, Italy
| | - Stefano Volpi
- Pediatria II Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Linda Chaabane
- Unit of Human Virology, Division of Immunology, Transplantation and Infectious Disease, Ospedale San Raffaele, Milano, Italy
| | - Mauro Malnati
- Unit of Human Virology, Division of Immunology, Transplantation and Infectious Disease, Ospedale San Raffaele, Milano, Italy
| | | | - Santina Bruzzone
- Department of Experimental Medicine, University of Genova, Genova, Italy
| | | | - Fabio Grassi
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Milan, Italy; Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland; Istituto Nazionale Genetica Molecolare "Romeo ed Enrica Invernizzi", Milan, Italy
| | - Carlo Minetti
- Pediatric Neurology and Muscle Disease Unit, Istituto Giannina Gaslini, Genova, Italy
| | - Claudio Bruno
- Center of Translational and Experimental Myology, Istituto Giannina Gaslini, Genova, Italy.
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21
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Gerevini S, Agosta F, Riva N, Spinelli EG, Pagani E, Caliendo G, Chaabane L, Copetti M, Quattrini A, Comi G, Falini A, Filippi M. MR Imaging of Brachial Plexus and Limb-Girdle Muscles in Patients with Amyotrophic Lateral Sclerosis. Radiology 2015; 279:553-61. [PMID: 26583760 DOI: 10.1148/radiol.2015150559] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To assess brachial plexus magnetic resonance (MR) imaging features and limb-girdle muscle abnormalities as signs of muscle denervation in patients with amyotrophic lateral sclerosis (ALS). MATERIALS AND METHODS This study was approved by the local ethical committees on human studies, and written informed consent was obtained from all subjects before enrollment. By using an optimized protocol of brachial plexus MR imaging, brachial plexus and limb-girdle muscle abnormalities were evaluated in 23 patients with ALS and clinical and neurophysiologically active involvement of the upper limbs and were compared with MR images in 12 age-matched healthy individuals. Nerve root and limb-girdle muscle abnormalities were visually evaluated by two experienced observers. A region of interest-based analysis was performed to measure nerve root volume and T2 signal intensity. Measures obtained at visual inspection were analyzed by using the Wald χ(2) test. Mean T2 signal intensity and volume values of the regions of interest were compared between groups by using a hierarchical linear model, accounting for the repeated measurement design. RESULTS The level of interrater agreement was very strong (κ = 0.77-1). T2 hyperintensity and volume alterations of C5, C6, and C7 nerve roots were observed in patients with ALS (P < .001 to .03). Increased T2 signal intensity of nerve roots was associated with faster disease progression (upper-limb Medical Research Council scale progression rate, r = 0.40; 95% confidence interval: 0.001, 0.73). Limb-girdle muscle alterations (ie, T2 signal intensity alteration, edema, atrophy) and fat infiltration also were found, in particular, in the supraspinatus muscle, showing more frequent T2 signal intensity alterations and edema (P = .01) relative to the subscapularis and infraspinatus muscles. CONCLUSION Increased T2 signal intensity and volume of brachial nerve roots do not exclude a diagnosis of ALS and suggest involvement of the peripheral nervous system in the ALS pathogenetic cascade. MR imaging of the peripheral nervous system and the limb-girdle muscle may be useful for monitoring the evolution of ALS and distinguishing patients with ALS from those with inflammatory neuropathy, respectively.
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Affiliation(s)
- Simonetta Gerevini
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Federica Agosta
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Nilo Riva
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Edoardo G Spinelli
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Elisabetta Pagani
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Giandomenico Caliendo
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Linda Chaabane
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Massimiliano Copetti
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Angelo Quattrini
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Giancarlo Comi
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Andrea Falini
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
| | - Massimo Filippi
- From the Department of Neuroradiology (S.G., G.Caliendo, A.F.), Neuroimaging Research Unit (F.A., E.G.S., E.P., M.F.), Department of Neurology (N.R., E.G.S., G.Comi, M.F.), and Neuropathology Unit (N.R., L.C., A.Q.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy; and Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.)
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Chaabane L, Tei L, Miragoli L, Lattuada L, von Wronski M, Uggeri F, Lorusso V, Aime S. In Vivo MR Imaging of Fibrin in a Neuroblastoma Tumor Model by Means of a Targeting Gd-Containing Peptide. Mol Imaging Biol 2015; 17:819-28. [DOI: 10.1007/s11307-015-0846-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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de Ceglia R, Chaabane L, Biffi E, Bergamaschi A, Ferrigno G, Amadio S, Del Carro U, Mazzocchi N, Comi G, Bianchi V, Taverna S, Forti L, D'Adamo P, Martino G, Menegon A, Muzio L. Down-sizing of neuronal network activity and density of presynaptic terminals by pathological acidosis are efficiently prevented by Diminazene Aceturate. Brain Behav Immun 2015; 45:263-76. [PMID: 25499583 DOI: 10.1016/j.bbi.2014.12.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 12/02/2014] [Accepted: 12/02/2014] [Indexed: 11/26/2022] Open
Abstract
Local acidosis is associated with neuro-inflammation and can have significant effects in several neurological disorders, including multiple sclerosis, brain ischemia, spinal cord injury and epilepsy. Despite local acidosis has been implicated in numerous pathological functions, very little is known about the modulatory effects of pathological acidosis on the activity of neuronal networks and on synaptic structural properties. Using non-invasive MRI spectroscopy we revealed protracted extracellular acidosis in the CNS of Experimental Autoimmune Encephalomyelitis (EAE) affected mice. By multi-unit recording in cortical neurons, we established that acidosis affects network activity, down-sizing firing and bursting behaviors as well as amplitudes. Furthermore, a protracted acidosis reduced the number of presynaptic terminals, while it did not affect the postsynaptic compartment. Application of the diarylamidine Diminazene Aceturate (DA) during acidosis significantly reverted both the loss of neuronal firing and bursting and the reduction of presynaptic terminals. Finally, in vivo DA delivery ameliorated the clinical disease course of EAE mice, reducing demyelination and axonal damage. DA is known to block acid-sensing ion channels (ASICs), which are proton-gated, voltage-insensitive, Na(+) permeable channels principally expressed by peripheral and central nervous system neurons. Our data suggest that ASICs activation during acidosis modulates network electrical activity and exacerbates neuro-degeneration in EAE mice. Therefore pharmacological modulation of ASICs in neuroinflammatory diseases could represent a new promising strategy for future therapies aimed at neuro-protection.
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Affiliation(s)
- Roberta de Ceglia
- Neuroimmunolgy Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, Italy
| | - Linda Chaabane
- Neuroimmunolgy Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, Italy; Department of Neurology, Institute of Experimental Neurology (INSPE), Vita Salute San Raffaele University, Milan, Italy
| | - Emilia Biffi
- Neuroengineering and Medical Robotics Laboratory, Department of Electronics, Information and Bioengineering, Politecnico di Milano, Italy; Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, Genoa, Italy
| | - Andrea Bergamaschi
- Neuroimmunolgy Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, Italy
| | - Giancarlo Ferrigno
- Neuroengineering and Medical Robotics Laboratory, Department of Electronics, Information and Bioengineering, Politecnico di Milano, Italy
| | - Stefano Amadio
- Neurophysiology Unit, Division of Neuroscience, San Raffaele Scientific Institute, Italy
| | - Ubaldo Del Carro
- Neurophysiology Unit, Division of Neuroscience, San Raffaele Scientific Institute, Italy
| | - Nausicaa Mazzocchi
- Advanced Light and Electron Microscopy Bio-Imaging Centre, Experimental Imaging Centre, San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Giancarlo Comi
- Department of Neurology, Institute of Experimental Neurology (INSPE), Vita Salute San Raffaele University, Milan, Italy
| | - Veronica Bianchi
- Dulbecco Telethon Institute at San Raffaele Scientific Institute, Division of Neuroscience, 20132 Milan, Italy
| | - Stefano Taverna
- Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, Genoa, Italy
| | - Lia Forti
- Center for Neuroscience and Dept. of Theoretical and Applied Sciences, Biomedical Division, University of Insubria, 21052 Busto Arsizio, Italy
| | - Patrizia D'Adamo
- Dulbecco Telethon Institute at San Raffaele Scientific Institute, Division of Neuroscience, 20132 Milan, Italy
| | - Gianvito Martino
- Neuroimmunolgy Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, Italy.
| | - Andrea Menegon
- Advanced Light and Electron Microscopy Bio-Imaging Centre, Experimental Imaging Centre, San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Luca Muzio
- Neuroimmunolgy Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, Italy.
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Ferrari G, Bignami F, Giacomini C, Capitolo E, Comi G, Chaabane L, Rama P. Ocular Surface Injury Induces Inflammation in the Brain: In Vivo and Ex Vivo Evidence of a Corneal–Trigeminal Axis. ACTA ACUST UNITED AC 2014; 55:6289-300. [DOI: 10.1167/iovs.14-13984] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Giulio Ferrari
- Eye Repair Lab, Division of Neuroscience, Cornea and Ocular Surface Unit, San Raffaele Scientific Institute, Milan, Italy
| | - Fabio Bignami
- Eye Repair Lab, Division of Neuroscience, Cornea and Ocular Surface Unit, San Raffaele Scientific Institute, Milan, Italy
| | - Chiara Giacomini
- Eye Repair Lab, Division of Neuroscience, Cornea and Ocular Surface Unit, San Raffaele Scientific Institute, Milan, Italy
| | - Eleonora Capitolo
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Giancarlo Comi
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Linda Chaabane
- Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Paolo Rama
- Eye Repair Lab, Division of Neuroscience, Cornea and Ocular Surface Unit, San Raffaele Scientific Institute, Milan, Italy
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Butti E, Berera G, Ruffini F, Chaabane L, Dina G, Quattrini A, Comi G, Martino G. Role of endogenous neural precursor cells in demyelination and remyelination after cuprizone-induced injury. J Neuroimmunol 2014. [DOI: 10.1016/j.jneuroim.2014.08.508] [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: 11/29/2022]
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Colombo E, Di Dario M, Capitolo E, Chaabane L, Newcombe J, Martino G, Farina C. Fingolimod may support neuroprotection via blockade of astrocyte nitric oxide. Ann Neurol 2014; 76:325-37. [PMID: 25043204 DOI: 10.1002/ana.24217] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 07/01/2014] [Accepted: 07/01/2014] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Although astrocytes participate in glial scar formation and tissue repair, dysregulation of the NFκB pathway and of nitric oxide (NO) production in these glia cells contributes to neuroinflammation and neurodegeneration. Here we investigated the role of the crosstalk between sphingosine-1-phosphate (S1P) and cytokine signaling cascades in astrocyte activation and inflammation-mediated neurodegeneration, and addressed the effects of fingolimod on astrocyte-neuron interaction and NO synthesis in vivo. METHODS Immunohistochemistry, immunofluorescence, and confocal microscopy were used to detect S1P receptors, interleukin (IL) 1R, IL17RA, and nitrosative stress in multiple sclerosis (MS) plaques, experimental autoimmune encephalomyelitis (EAE) spinal cord, and the spinal cord of fingolimod-treated EAE mice. An in vitro model was established to study the effects of S1P, IL1, and IL17 stimulation on NFkB translocation and NO production in astrocytes, on spinal neuron survival, and on astrocyte-neuron interaction. Furthermore, fingolimod efficacy in blocking astrocyte-mediated neurodegeneration was evaluated. RESULTS We found coordinated upregulation of IL1R, IL17RA, S1P1, and S1P3 together with nitrosative markers in astrocytes within MS and EAE lesions. In vitro studies revealed that S1P, IL17, and IL1 induced NFκB translocation and NO production in astrocytes, and astrocyte conditioned media triggered neuronal death. Importantly, fingolimod blocked the 2 activation events evoked in astrocytes by either S1P or inflammatory cytokines, resulting in inhibition of astrocyte-mediated neurodegeneration. Finally, therapeutic administration of fingolimod to EAE mice hampered astrocyte activation and NO production. INTERPRETATION A neuroprotective effect of fingolimod in vivo may result from its inhibitory action on key astrocyte activation steps.
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Affiliation(s)
- Emanuela Colombo
- Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
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Ghalloussi R, Garcia-Vasquez W, Chaabane L, Dammak L, Larchet C, Deabate S, Nevakshenova E, Nikonenko V, Grande D. Ageing of ion-exchange membranes in electrodialysis: A structural and physicochemical investigation. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.02.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Catanzaro V, Gringeri CV, Menchise V, Padovan S, Boffa C, Dastrù W, Chaabane L, Digilio G, Aime S. AR2p/R1pRatiometric Procedure to Assess Matrix Metalloproteinase-2 Activity by Magnetic Resonance Imaging. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209286] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Catanzaro V, Gringeri CV, Menchise V, Padovan S, Boffa C, Dastrù W, Chaabane L, Digilio G, Aime S. A R2p /R1p ratiometric procedure to assess matrix metalloproteinase-2 activity by magnetic resonance imaging. Angew Chem Int Ed Engl 2013; 52:3926-30. [PMID: 23450786 DOI: 10.1002/anie.201209286] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Indexed: 01/30/2023]
Affiliation(s)
- Valeria Catanzaro
- Istituto di Ricerca Diagnostica e Nucleare SDN, Via Gianturco 113, 80143 Napoli, Italy
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Gringeri CV, Menchise V, Rizzitelli S, Cittadino E, Catanzaro V, Dati G, Chaabane L, Digilio G, Aime S. Novel Gd(III)-based probes for MR molecular imaging of matrix metalloproteinases. Contrast Media Mol Imaging 2012; 7:175-84. [PMID: 22434630 DOI: 10.1002/cmmi.478] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Two novel Gd-based contrast agents (CAs) for the molecular imaging of matrix metalloproteinases (MMPs) were synthetized and characterized in vitro and in vivo. These probes were based on the PLG*LWAR peptide sequence, known to be hydrolyzed between Gly and Leu by a broad panel of MMPs. A Gd-DOTA chelate was conjugated to the N-terminal position through an amide bond, either directly to proline (compd Gd-K11) or through a hydrophilic spacer (compd Gd-K11N). Both CA were made strongly amphiphilic by conjugating an alkyl chain at the C-terminus of the peptide sequence. Gd-K11 and Gd-K11N have a good affinity for β-cyclodextrins (K(D) 310 and 670 µ m respectively) and for serum albumin (K(D) 350 and 90 µ m respectively), and can be efficiently cleaved in vitro at the expected site by MMP-2 and MMP-12. Upon MMP-dependent cleavage, the CAs lose the C-terminal tetrapeptide and the alkyl chain, thus undergoing to an amphiphilic-to-hydrophilic transformation that is expected to alter tissue pharmacokinetics. To prove this, Gd-K11 was systemically administered to mice bearing a subcutaneous B16.F10 melanoma, either pre-treated or not with the broad spectrum MMP inhibitor GM6001 (Ilomastat). The washout of the Gd-contrast enhancement in MR images was significantly faster for untreated subjects (displaying MMP activity) with respect to treated ones (MMP activity inhibited). The washout kinetics of Gd-contrast enhancement from the tumor microenvironment could be then interpreted in terms of the local activity of MMPs.
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Affiliation(s)
- Concetta V Gringeri
- Department of Environmental and Life Sciences, Università del Piemonte Orientale A. Avogadro, Viale T. Michel 11, 15121, Alessandria, Italy
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Capossela S, Muzio L, Bertolo A, Bianchi V, Dati G, Chaabane L, Godi C, Politi LS, Biffo S, D'Adamo P, Mallamaci A, Pannese M. Growth defects and impaired cognitive-behavioral abilities in mice with knockout for Eif4h, a gene located in the mouse homolog of the Williams-Beuren syndrome critical region. Am J Pathol 2012; 180:1121-1135. [PMID: 22234171 DOI: 10.1016/j.ajpath.2011.12.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 11/14/2011] [Accepted: 12/02/2011] [Indexed: 01/09/2023]
Abstract
Protein synthesis is a tightly regulated, energy-consuming process. The control of mRNA translation into protein is fundamentally important for the fine-tuning of gene expression; additionally, precise translational control plays a critical role in many cellular processes, including development, cellular growth, proliferation, differentiation, synaptic plasticity, memory, and learning. Eukaryotic translation initiation factor 4h (Eif4h) encodes a protein involved in the process of protein synthesis, at the level of initiation phase. Its human homolog, WBSCR1, maps on 7q11.23, inside the 1.6 Mb region that is commonly deleted in patients affected by the Williams-Beuren syndrome, which is a complex neurodevelopmental disorder characterized by cardiovascular defects, cerebral dysplasias and a peculiar cognitive-behavioral profile. In this study, we generated knockout mice deficient in Eif4h. These mice displayed growth retardation with a significant reduction of body weight that began from the first week of postnatal development. Neuroanatomical profiling results generated by magnetic resonance imaging analysis revealed a smaller brain volume in null mice compared with controls as well as altered brain morphology, where anterior and posterior brain regions were differentially affected. The inactivation of Eif4h also led to a reduction in both the number and complexity of neurons. Behavioral studies revealed severe impairments of fear-related associative learning and memory formation. These alterations suggest that Eif4h might contribute to certain deficits associated with Williams-Beuren syndrome.
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Affiliation(s)
- Simona Capossela
- Gene Expression Unit, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, Italy
| | - Luca Muzio
- Neuroimmunology Unit - INSPE, Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Alessandro Bertolo
- Gene Expression Unit, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, Italy
| | - Veronica Bianchi
- Molecular Genetics of Mental Retardation Unit, Division of Neuroscience, Dulbecco Telethon Institute, San Raffaele Scientific Institute, Milan, Italy
| | - Gabriele Dati
- INSPE, Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Linda Chaabane
- INSPE, Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Claudia Godi
- Neuroradiology Research Group, Center for Imaging, San Raffaele Scientific Institute, Milan, Italy
| | - Letterio S Politi
- Neuroradiology Research Group, Center for Imaging, San Raffaele Scientific Institute, Milan, Italy
| | - Stefano Biffo
- Molecular Histology and Cell Growth Unit, Division of Molecular Oncology, San Raffaele Scientific Institute, Milan, Italy; Department of Science of Environment and Life (DISAV), University of Eastern Piedmont, Alessandria, Italy
| | - Patrizia D'Adamo
- Molecular Genetics of Mental Retardation Unit, Division of Neuroscience, Dulbecco Telethon Institute, San Raffaele Scientific Institute, Milan, Italy
| | | | - Maria Pannese
- Gene Expression Unit, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, Italy.
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Crielaard B, Lammers T, Morgan M, Chaabane L, Carboni S, Greco B, Zaratin P, Kraneveld A, Storm G. Macrophages and liposomes in inflammatory disease: Friends or foes? Int J Pharm 2011; 416:499-506. [DOI: 10.1016/j.ijpharm.2010.12.045] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Revised: 12/22/2010] [Accepted: 12/28/2010] [Indexed: 10/18/2022]
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Chaabane L, Dammak L, Grande D, Larchet C, Huguet P, Nikonenko S, Nikonenko V. Swelling and permeability of Nafion®117 in water–methanol solutions: An experimental and modelling investigation. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2011.03.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tei L, Mazooz G, Shellef Y, Avni R, Vandoorne K, Barge A, Kalchenko V, Dewhirst MW, Chaabane L, Miragoli L, Longo D, Neeman M, Aime S. Novel MRI and fluorescent probes responsive to the Factor XIII transglutaminase activity. Contrast Media Mol Imaging 2011; 5:213-22. [PMID: 20812289 DOI: 10.1002/cmmi.392] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Transglutaminases, including factor XIII and tissue transglutaminase, participate in multiple extracellular processes associated with remodeling of the extracellular matrix during wound repair, blood clotting, tumor progression and fibrosis of ischemic injuries. The aim of this work was to evaluate a novel substrate analog for transglutaminase optimized by molecular modeling calculations (DCCP16), which can serve for molecular imaging of transglutaminase activity by magnetic resonance imaging and by near-infrared imaging. Experimental data showed covalent binding of Gd-DCCP16 and DCCP16-IRIS Blue to human clots, to basement membrane components and to casein in purified systems as well as in three-dimensional multicellular spheroids. In vivo, DCCP16 showed enhancement with a prolonged retention in clots and tumors, demonstrating the ability to detect both factor XIII and tissue transglutaminase mediated covalent binding of the contrast material.
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Affiliation(s)
- Lorenzo Tei
- Dipartimento di Scienze dell'Ambiente e della Vita, Università del Piemonte Orientale, Viale T. Michel 11, I-15121, Alessandria, Italy
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Castelli DD, Terreno E, Cabella C, Chaabane L, Lanzardo S, Tei L, Visigalli M, Aime S. Evidence for in vivo macrophage mediated tumor uptake of paramagnetic/fluorescent liposomes. NMR Biomed 2009; 22:1084-1092. [PMID: 19569084 DOI: 10.1002/nbm.1416] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Dysprosium (Dy)-loaded liposomes act as excellent T(2)-susceptibility agents at high magnetic field strength. The R(2)-enhancement increases with the size of the liposomes and the concentration of entrapped paramagnetic metal complexes. Neuro-2a tumor cells are readily labeled when Dy-loaded liposomes, suitably functionalized with glutamine residues (Gln), are added to the culture medium as glutamine receptors are highly expressed in such proliferating tumor cells. By using fluorescent liposomes doped with fluorescent dyes (either incorporated in the membrane or included in the inner cavity), confocal microscopy experiments showed that targeted liposomes are taken up much more avidly than non-targeted vesicles. In vivo studies showed that glutamine-functionalized and non-functionalized liposomes accumulate in the tumor region to a similar extent. Confocal images of the excised tumor showed extensive co-localization of liposomes and macrophages in both cases. It is suggested that the loss of tumor specificity, shown by Gln-functionalized liposomes in vivo, has to be associated with the efficient removal of liposomes operated by the RES (reticulo endoplasmatic system) or tumor associated macrophages.
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Affiliation(s)
- Daniela Delli Castelli
- Department of Chemistry, IFM and Molecular Imaging Center, University of Torino, Via P. Giuria 7, I-10125 Torino, Italy
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Boschi F, Marzola P, Sandri M, Nicolato E, Galiè M, Fiorini S, Merigo F, Lorusso V, Chaabane L, Sbarbati A. Tumor microvasculature observed using different contrast agents: a comparison between Gd-DTPA-Albumin and B-22956/1 in an experimental model of mammary carcinoma. MAGMA 2008; 21:169-76. [PMID: 18317830 DOI: 10.1007/s10334-008-0106-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2007] [Revised: 02/07/2008] [Accepted: 02/08/2008] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The aim of this study was to compare a pure macromolecular contrast agent (Gd-DTPA-albumin) with a new protein-binding blood pool contrast agent (B22956/1) in terms of their capacity to investigate the microvasculature in an experimental model of mammary carcinoma. MATERIALS AND METHODS Tumors were induced by subcutaneous injection of 5 x 10(5) BB1 cells into the backs of 5-7 week-old female FVB/neuNT233 mice. The animals were observed using DCE-MRI when the longest diameter of the tumor was 10.2+/-2.0 mm. DCE-MRI experiments were carried out using B22956/1 and (24 h later) Gd-DTPA-albumin. RESULTS DCE-MRI data showed that vasculature in the tumor rim was characterized by greater fractional plasma volume and transendothelial permeability than vasculature in the tumor core as measured by both contrast agents. Permeability to Gd-DTPA-albumin in the tumor core was hardly measurable while permeability to B22956/1 was substantial. Histologically the tumor core showed areas of well vascularized, viable tissue surrounded by necrotic regions. CONCLUSIONS DCE-MRI experiments performed with B22956/1 are useful in the investigation of vasculature in those tumor regions that are characterized by low permeability to macromolecules.
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Affiliation(s)
- Federico Boschi
- Dipartimento di Scienze Morfologico-Biomediche, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
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Parolini C, Marchesi M, Lorenzon P, Castano M, Balconi E, Miragoli L, Chaabane L, Morisetti A, Lorusso V, Martin BJ, Bisgaier CL, Krause B, Newton RS, Sirtori CR, Chiesa G. Dose-Related Effects of Repeated ETC-216 (Recombinant Apolipoprotein A-IMilano/1-Palmitoyl-2-Oleoyl Phosphatidylcholine Complexes) Administrations on Rabbit Lipid-Rich Soft Plaques. J Am Coll Cardiol 2008; 51:1098-103. [DOI: 10.1016/j.jacc.2007.12.010] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2008] [Revised: 11/08/2008] [Accepted: 12/02/2008] [Indexed: 11/28/2022]
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Chaabane L, Bulvestre G, Innocent C, Pourcelly G, Auclair B. Physicochemical characterization of ion-exchange membranes in water–methanol mixtures. Eur Polym J 2006. [DOI: 10.1016/j.eurpolymj.2005.12.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abstract
Examples of C-4 symmetric, medium MW conjugates incorporating 12 glucose or galactose groups linked via four dendritic wedges to a central Gd complex have been characterised; their enhanced relaxivity is interpreted in terms of effective motional coupling and large contributions from second sphere water molecules.
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Affiliation(s)
- David A Fulton
- Department of Chemistry, University of Durham, South Road, Durham, UK
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Chaubet F, Canet-Soulas E, Chaabane L, Zahir C, Brigger I, Corot C, Letourneur D. CMR 2005: 4.03: A new contrast agent for magnetic resonance imaging of the vascular walls. Contrast Media Mol Imaging 2006. [DOI: 10.1002/cmmi.25] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Fissoune R, Pellet N, Chaabane L, Contard F, Guerrier D, Briguet A. Evaluation of adipose tissue distribution in obese fa/fa Zucker rats by in vivo MR imaging: effects of peroxisome proliferator-activated receptor agonists. MAGMA 2004; 17:229-35. [PMID: 15624103 DOI: 10.1007/s10334-004-0088-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2004] [Revised: 11/19/2004] [Accepted: 11/22/2004] [Indexed: 11/28/2022]
Abstract
High-resolution MRI of obese (fa/fa) Zucker rats was investigated to characterize and assess in vivo adipose tissue distribution. Thirty animals were gavaged with a placebo, a PPARgamma activator (pioglitazone), or a dual PPARalphagamma activator (LM 4156). At day 15, T1-weighted images were acquired in vivo using a 2TMRI system with a high in-plane spatial resolution (254 microm). Fat volumes of selected territories were measured by image segmentation, and the retroperitoneal fat was weighed post-mortem. Body-weight gain was significant with pioglitazone (101.8+/-5.9 g, p<0.01 vs. placebo). The good quality of MR images allowed the delimitation and quantification of different fat territories. In response to pioglitazone, the retroperitoneal fat was more important compared to placebo (+23%, p<0.01) while subcutaneous fat was not different. No significant effects were observed with LM 4156. In vivo measurements of fat volumes were strongly correlated with ex vivo tissue weights (r=0.91). High-resolution MRI provides an in vivo measurement of adipose tissue distribution in obese Zucker rats. Specific fat depots of regions that were particularly involved in drug response were determined in vivo. Fat remodeling was observed with pioglitazone but not with a dual PPARalphagamma activator (LM 4156).
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Affiliation(s)
- R Fissoune
- Laboratoire de RMN, CNRS UMR 5012, CPE- UCB LYON I, 3 Rue Victor Grignard, 69616, Villeurbanne, France.
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Chaabane L, Pellet N, Bourdillon MC, Desbleds Mansard C, Sulaiman A, Hadour G, Thivolet-Béjui F, Roy P, Briguet A, Douek P, Canet Soulas E. Contrast enhancement in atherosclerosis development in a mouse model: in vivo results at 2 Tesla. MAGMA 2004; 17:188-95. [PMID: 15565504 DOI: 10.1007/s10334-004-0055-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2004] [Accepted: 07/27/2004] [Indexed: 10/26/2022]
Abstract
To develop an MRI method for the evaluation of contrast enhancement in early atherosclerotic plaque development in the abdominal aorta of a mouse model. Male apoE-/- mice from three groups, respectively 4 (n = 6), 8 (n = 11) and 16 (n = 4) weeks were included. Axial T1 spin echo images of the abdominal aorta were obtained above and below the renal arteries (90 microm spatial resolution) before and over 1 h after the injection of a macromolecular contrast agent. Signal enhancement was measured in the vessel wall and compared to histological features. Maximal arterial wall signal enhancement was obtained from 16 to 32 min post injection. During this time, the signal-to-noise ratio increased by a factor up to 1.7 in 16 week mice and 2.7 and 2.4 in 8 and 4 weeks mice, respectively. The enhancement of the arterial wall appeared less pronounced in the oldest mice, 16 weeks old, exhibiting more advanced lesions. Using a macromolecular gadolinium agent, contrast uptake in atherogenesis varies with lesion stage and may be related to vessel-wall permeability. Dynamic contrast-enhanced MRI may be useful to evaluate the atherosclerotic plaque activity in mice.
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Affiliation(s)
- L Chaabane
- Laboratoire de RMN UMR CNRS 5012, UCB Lyon1-ESCPE, 69622, Villeurbanne, France
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McFadden EP, Chaabane L, Contard F, Guerrier D, Briguet A, Douek P, Soulas EC. In Vivo Magnetic Resonance Imaging of Large Spontaneous Aortic Aneurysms in Old Apolipoprotein E-Deficient Mice. Invest Radiol 2004; 39:585-90. [PMID: 15377937 DOI: 10.1097/01.rli.0000138089.98165.88] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
UNLABELLED Old ApoE-deficient mice were studied in vivo by magnetic resonance imaging (MRI) to prospectively evaluate vascular remodeling associated with atherosclerotic lesions. MATERIAL AND METHODS Old female ApoE-/- mice on a normal diet were followed by MRI at 2 Tesla for a 3-month period and killed for histopathology. Aortic dimensions were measured and compared. RESULTS High-quality in vivo MR images were obtained at 2 Tesla with in plane spatial resolution of 86 X 86 microm2. On MRI, aortic lumen enlargement (>1.5-fold dilation) was seen in 10 of 13 mice, located predominantly in the suprarenal portion of the aorta. The mean maximal diameter of the aneurysms and of the aorta above and below the aneurysm were, respectively, 1.12 +/- 0.32 mm and 0.53 +/- 0.08 mm by MRI and 1.3+/- 0.41 mm and 0.55 +/- 0.15 mm by histology. Matched histologic cross-sections of the aortic wall showed medial degradation with rupture of the internal elastic lamina at multiple sites, associated with fibrolipidic plaque containing cholesterol crystals. CONCLUSIONS Aortic lumen enlargement was diagnosed in old ApoE-/- mice at sites with advanced atherosclerotic plaques. MRI has potential both as an in vivo imaging technique for screening mouse models for vascular wall pathology and to follow arterial remodeling associated with the disease progression.
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Mansard CD, Canet Soulas EP, Anwander A, Chaabane L, Neyran B, Serfaty JM, Magnin IE, Douek PC, Orkisz M. Quantification of multicontrast vascular MR images with NLSnake, an active contour model: In vitro validation and in vivo evaluation. Magn Reson Med 2004; 51:370-9. [PMID: 14755663 DOI: 10.1002/mrm.10722] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Vessel-wall measurements from multicontrast MRI provide information on plaque structure and evolution. This requires the extraction of numerous contours. In this work a contour-extraction method is proposed that uses an active contour model (NLSnake) adapted for a wide range of MR vascular images. This new method employs length normalization for the purpose of deformation computation and offers the advantages of simplified parameter tuning, fast convergence, and minimal user interaction. The model can be initialized far from the boundaries of the region to be segmented, even by only one pixel. The accuracy and reproducibility of NLSnake endoluminal contours were assessed on vascular phantom MR angiography (MRA) and high-resolution in vitro MR images of rabbit aorta. An in vivo evaluation was performed on rabbit and clinical data for both internal and external vessel-wall contours. In phantoms with 95% stenoses, NLSnake measured 94.3% +/- 3.8%, and the accuracy was even better for milder stenoses. In the images of rabbit aorta, variability between NLSnake and experts was less than interobserver variability, while the maximum intravariability of NLSnake was equal to 1.25%. In conclusion, the NLSnake technique successfully quantified the vessel lumen in multicontrast MR images using constant parameters.
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Chaabane L, Soulas EC, Contard F, Salah A, Guerrier D, Briguet A, Douek P. High-resolution magnetic resonance imaging at 2 Tesla: potential for atherosclerotic lesions exploration in the apolipoprotein E knockout mouse. Invest Radiol 2003; 38:532-8. [PMID: 12874520 DOI: 10.1097/01.rli.0000067491.31978.1c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION The aim of the present study was to evaluate the potential of high-resolution MRI at 2 Tesla (T) for direct noninvasive imaging of the aortic wall in a mouse model of atherosclerosis. MATERIAL AND METHODS A specific mouse antenna was developed and sequence parameters were adjusted. T(1)- and T2-weighted images of abdominal aorta were obtained at 2 T with a spatial resolution of 86 x 86 x 800 microm3 in vivo. With a dedicated small coil, ex vivo MRI of the aorta was performed with a spatial resolution of 54 x 54 x 520 microm3. RESULTS In vivo, the aortic wall was clearly defined on T(2)-weighted images in 15 of 16 mice: along the aorta the lumen circumference ranged from 1.07 to 3.61 mm and mean wall thickness from 0.11 to 0.67 mm. In vivo measurements of plaque distribution were confirmed by ex vivo MR imaging and by histology, with a good correlation with histology regarding lumen circumference (r = 0.94) and wall thickness (r = 0.97). CONCLUSION Magnetic resonance imaging at 2 T to analyze in vivo atherosclerotic lesions in mice is possible with a spatial resolution of 86 x 86 x 800 microm3 and thus can be used for noninvasive follow-up in evaluation of new drugs.
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Affiliation(s)
- Linda Chaabane
- Laboratoire de RMN, UMR 5012 CNRS, UCB-CPE, Lyon, France.
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Serfaty JM, Chaabane L, Tabib A, Chevallier JM, Briguet A, Douek PC. Atherosclerotic plaques: classification and characterization with T2-weighted high-spatial-resolution MR imaging-- an in vitro study. Radiology 2001; 219:403-10. [PMID: 11323464 DOI: 10.1148/radiology.219.2.r01ma15403] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To evaluate if T2-weighted high-spatial-resolution magnetic resonance (MR) imaging (117 microm per pixel) can help accurate classification of atherosclerotic plaques. MATERIALS AND METHODS Thirty human arteries and 11 carotid endarterectomy specimens from 31 patients underwent T2-weighted MR imaging (2-T magnet; repetition time, 2,000 msec; echo time, 50 msec) at room temperature. After imaging, Bouin fixative was used to fix 26 arteries, and the other 15 arteries were fixed by means of freezing. Specimens were stained with hematoxylin-eosin and safranin or Sudan lipid stain. MR images and histologic slices were classified independently by two radiologists and a pathologist, respectively, on the basis of the American Heart Association classification. RESULTS Results with MR imaging were the following: type I-II plaques, sensitivity of 67% and specificity of 100%; type IV-Va plaques, sensitivity of 74% and specificity of 85%; type Vb plaques, sensitivity of 90% and specificity of 100%; type Vc plaques, sensitivity of 80% and specificity of 90%. No type III plaque was diagnosed in the study. The overall kappa value was 0.68. CONCLUSION High-spatial-resolution MR imaging with T2 weighting alone can help accurate classification of fibrocalcic plaques (type Vb), but it is subject to limitations for the classification and analysis of other types of atherosclerotic plaques.
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Affiliation(s)
- J M Serfaty
- Laboratoire de Résonance Magnétique Nuclèaire Unité Mixte de Recherche, Villeurbanne, France.
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Chaabane L, Canet E, Serfaty JM, Contard F, Guerrier D, Douek P, Briguet A. Microimaging of atherosclerotic plaque in animal models. MAGMA 2000; 11:58-60. [PMID: 11186989 DOI: 10.1007/bf02678496] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- L Chaabane
- Laboratoire de RMN, CNRS UMR 5012, UCB-CPE, Villeurbanne, France.
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Serfaty J, Chaabane L, Tabib A, Briguet A, Douek P. 3.P.347 The atherosclerotic plaque: High resolution MR imaging. Atherosclerosis 1997. [DOI: 10.1016/s0021-9150(97)89422-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Desgoutte P, Chaabane L, Favre B, Deguin A, Lapray C, Briguet A. Pulsed gradient analysis using a dedicated magnetometer. MAGMA 1997; 5:53-7. [PMID: 9219180 DOI: 10.1007/bf02592266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In magnetic resonance imaging and spectroscopy, knowledge of the magnetic field gradient behavior is very important. This work describes a simple way to characterize the temporal and spatial dependence of the main magnetic field when a gradient is switched. Records are performed with a home-built magnetometer. This device is controlled by a personal computer for recording and processing the NMR signals from an array of small probes spatially distributed and switched by the magnetometer. We present results of measurements on a 2-T superconducting magnet. These results show the residual defects of an active shielded gradient coils system.
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Affiliation(s)
- P Desgoutte
- Laboratoire de Résonance Magnétique Nucléaire, UCB Lyon, Villeurbanne, France
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