1. The emerging role of ECM crosslinking in T cell mobility as a hallmark of immunosenescence in humans Authors' names and affiliations
- Author
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Moreau, Jean-Francois, Pradeu, Thomas, Grignolio, Andrea, Nardini, Christine, Castiglione, Filippo, Tieri, Paolo, Capri, Miriam, Salvioli, Stefano, Taupin, Jean-Luc, Garagnani, Paolo, Franceschi, Claudio, Immunology from Concept and Experiments to Translation (ImmunoConcept), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), CHU Bordeaux [Bordeaux], Institut d'Histoire et de Philosophie des Sciences et des Techniques (IHPST), Université Paris 1 Panthéon-Sorbonne (UP1)-Département d'Etudes Cognitives - ENS Paris (DEC), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Laboratoire de Physique de l'ENS Lyon (Phys-ENS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Politecnico di Milano [Milan] (POLIMI), CIG - Interdepartmental Center 'L.Galvani', Centro Interdipartimentale Galvani (CIG), Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Departmento of Experimental, Diagnostic and Specialty Medicine, Alloimmunité-Autoimmunité-Transplantation (A2T), Institut Universitaire d'Hématologie (IUH), Université Paris Diderot - Paris 7 (UPD7)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), European Project: 637647,H2020,ERC-2014-STG,IDEM(2015), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Pradeu, Thomas, Immunity, DEvelopment and Microbiota: Understanding the Continuous Construction of Biological Identity - IDEM - - H20202015-09-01 - 2020-09-01 - 637647 - VALID, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), Université Panthéon-Sorbonne (UP1)-Centre National de la Recherche Scientifique (CNRS)-Département d'Etudes Cognitives - ENS Paris (DEC), École normale supérieure - Paris (ENS Paris)-École normale supérieure - Paris (ENS Paris), Università degli Studi di Roma 'La Sapienza' [Rome], and Università di Bologna [Bologna] (UNIBO)
- Subjects
Mobility ,[SHS.HISPHILSO]Humanities and Social Sciences/History, Philosophy and Sociology of Sciences ,Aging ,[SDV.IMM] Life Sciences [q-bio]/Immunology ,[SHS.HISPHILSO] Humanities and Social Sciences/History, Philosophy and Sociology of Sciences ,Immunosenescence ,Immune cells ,[SDV.IMM]Life Sciences [q-bio]/Immunology ,Extracellular matrix - Abstract
International audience; Immunosenescence is thought to result from cellular aging and to reflect exposure to environmental stressors and antigens, including cytomegalovirus (CMV). However, not all of the features of immunosenescence are consistent with this view, and this has led to the emergence of the sister theory of " inflammaging ". The recently discovered diffuse tissue distribution of resident memory T cells (TRM) which don't recirculate, calls these theories into question. These cells account for most T cells residing in barrier epithelia which sit in and travel through the extracellular matrix (ECM). With almost all studies to date carried out on peripheral blood, the age-related changes of the ECM and their consequences for T cell mobility, which is crucial for the function of these cells, have been largely ignored. We propose an update of the theoretical framework of immunosenescence, based on a novel hypothesis: the increasing stiffness and cross-linking of the senescent ECM lead to a progressive immunodeficiency due to an age-related decrease in T cell mobility and eventually the death of these cells. A key element of this mechanism is the mechanical stress to which the cell cytoplasm and nucleus are subjected during passage through the ECM. This hypothesis is based on an " evo-devo " perspective bringing together some major characteristics of aging, to create a single interpretive framework for immunosenescence.
- Published
- 2017
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