Search for MHC/TCR-Like Systems in Living Organisms

Autor: Paganini, Julien, Pontarotti, Pierre
Přispěvatelé: XEGEN, 15 rue de la République, 13420, Gémenos, Microbes évolution phylogénie et infections (MEPHI), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU), Centre National de la Recherche Scientifique (CNRS), XEGEN, Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), ANR-10-IAHU-0003,Méditerranée Infection,I.H.U. Méditerranée Infection(2010)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
[SDV]Life Sciences [q-bio]
Immunology
Adaptive Immunity
Evolution
Molecular
Major Histocompatibility Complex
Species Specificity
[SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system
[SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases
Hypothesis and Theory
Immune Tolerance
Animals
Humans
[SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology
convergent evolution
somatic diversification
kin recognition
adaptive immune system evolution
[SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases
Polymorphism
Genetic
Plants
[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology
Genes
T-Cell Receptor
Self Tolerance
Genetic Loci
self incompatibility
[SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology
vegetative incompatibility
Zdroj: Frontiers in Immunology
Frontiers in Immunology, Frontiers, 2021, 12, ⟨10.3389/fimmu.2021.635521⟩
Frontiers in Immunology, 2021, 12, ⟨10.3389/fimmu.2021.635521⟩
ISSN: 1664-3224
Popis: International audience; Highly polymorphic loci evolved many times over the history of species. These polymorphic loci are involved in three types of functions: kind recognition, self-incompatibility, and the jawed vertebrate adaptive immune system (AIS). In the first part of this perspective, we reanalyzed and described some cases of polymorphic loci reported in the literature. There is a convergent evolution within each functional category and between functional categories, suggesting that the emergence of these self/non-self recognition loci has occurred multiple times throughout the evolutionary history. Most of the highly polymorphic loci are coding for proteins that have a homophilic interaction or heterophilic interaction between linked loci, leading to self or non-self-recognition. The highly polymorphic MHCs, which are involved in the AIS have a different functional mechanism, as they interact through presented self or non-self-peptides with T cell receptors, whose diversity is generated by somatic recombination. Here we propose a mechanism called “the capacity of recognition competition mechanism” that might contribute to the evolution of MHC polymorphism. We propose that the published cases corresponding to these three biological categories represent a small part of what can be found throughout the tree of life, and that similar mechanisms will be found many times, including the one where polymorphic loci interact with somatically generated loci.
Databáze: OpenAIRE
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