Article (Scientific journals)
Two types of human TCR differentially regulate reactivity to self and non-self antigens.
Trofimov, Assya; Brouillard, Philippe; Larouche, Jean-David et al.
2022In iScience, 25 (9), p. 104968
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Keywords :
Immune response; Immunity; Immunology; Multidisciplinary
Abstract :
[en] Based on analyses of TCR sequences from over 1,000 individuals, we report that the TCR repertoire is composed of two ontogenically and functionally distinct types of TCRs. Their production is regulated by variations in thymic output and terminal deoxynucleotidyl transferase (TDT) activity. Neonatal TCRs derived from TDT-negative progenitors persist throughout life, are highly shared among subjects, and are reported as disease-associated. Thus, 10%-30% of most frequent cord blood TCRs are associated with common pathogens and autoantigens. TDT-dependent TCRs present distinct structural features and are less shared among subjects. TDT-dependent TCRs are produced in maximal numbers during infancy when thymic output and TDT activity reach a summit, are more abundant in subjects with AIRE mutations, and seem to play a dominant role in graft-versus-host disease. Factors decreasing thymic output (age, male sex) negatively impact TCR diversity. Males compensate for their lower repertoire diversity via hyperexpansion of selected TCR clonotypes.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Trofimov, Assya;  Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada ; Department of Computer Science and Research Operations, Université de Montréal, Montreal, Quebec H3C 3J7, Canada ; Quebec Institute for Learning Algorithms (Mila), Montreal, Quebec H2S 3H1, Canada ; Currently Fred Hutchinson Cancer Center, Seattle, WA 98109, USA ; Currently Department of Physics, University of Washington, Seattle, WA 98195-1560, USA
Brouillard, Philippe;  Department of Computer Science and Research Operations, Université de Montréal, Montreal, Quebec H3C 3J7, Canada ; Quebec Institute for Learning Algorithms (Mila), Montreal, Quebec H2S 3H1, Canada
Larouche, Jean-David;  Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada ; Department of Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
Séguin, Jonathan;  Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
Laverdure, Jean-Philippe;  Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
Brasey, Ann;  Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
Ehx, Grégory  ;  Université de Liège - ULiège > Département des sciences cliniques ; Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
Roy, Denis-Claude;  Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
Busque, Lambert;  Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
Lachance, Silvy;  Department of Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada ; Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
Lemieux, Sébastien;  Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada ; Department of Computer Science and Research Operations, Université de Montréal, Montreal, Quebec H3C 3J7, Canada ; Department of Biochemistry at University of Montreal, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
Perreault, Claude ;  Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada ; Department of Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada ; Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
Language :
English
Title :
Two types of human TCR differentially regulate reactivity to self and non-self antigens.
Publication date :
16 September 2022
Journal title :
iScience
eISSN :
2589-0042
Publisher :
Elsevier Inc., United States
Volume :
25
Issue :
9
Pages :
104968
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FRQS - Fonds de Recherche du Québec - Santé [CA]
CIHR - Canadian Institutes of Health Research [CA]
Funding text :
This study was supported by grant FDN-148400 from the Canadian Institutes of Health Research (to C.P.). A.T. was supported by a studentship from the Canadian Institutes of Health Research , and J.D.L. by a studentship from the Fonds de Recherche Québec – Santé .
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