Phenotypic and Clonal Stability of Antigen-Inexperienced Memory-like T Cells across the Genetic Background, Hygienic Status, and Aging

0543475 - ÚMG 2022 RIV US eng J - Journal Article
Moudrá, Alena - Niederlová, Veronika - Novotny, Jiří - Schmiedová, L. - Kubovčiak, Jan - Matějková, T. - Drobek, Aleš - Přibíková, Michaela - Stopková, R. - Čížková, Dagmar - Neuwirth, Aleš - Michálik, Juraj - Křížová, Kateřina - Hudcovic, Tomáš - Kolář, Michal - Kozáková, Hana - Kreisinger, J. - Stopka, P. - Štěpánek, Ondřej
Phenotypic and Clonal Stability of Antigen-Inexperienced Memory-like T Cells across the Genetic Background, Hygienic Status, and Aging.
Journal of Immunology. Roč. 206, č. 9 (2021), s. 2109-2121. ISSN 0022-1767. E-ISSN 1550-6606
R&D Projects: GA ČR GJ19-03435Y; GA ČR(CZ) GJ18-17796Y; GA ČR GA19-02261S; GA MŠMT(CZ) LM2015040; GA MŠMT(CZ) LM2018126; GA MŠMT ED2.1.00/19.0395; GA MŠMT(CZ) ED1.1.00/02.0109
Institutional support: RVO:68378050 ; RVO:68081766 ; RVO:61388971
Keywords : differential expression * aged mice * naive * generation * responses * il-4 * primers * leads
OECD category: Immunology; Immunology (MBU-M); Immunology (UBO-W)
Impact factor: 5.430, year: 2021
Method of publishing: Limited access
https://www.jimmunol.org/content/206/9/2109

Ag-inexperienced memory-like T (AIMT) cells are functionally unique T cells, representing one of the two largest subsets of murine CD8(+) T cells. However, differences between laboratory inbred strains, insufficient data from germ-free mice, a complete lack of data from feral mice, and an unclear relationship between AIMT cells formation during aging represent major barriers for better understanding of their biology. We performed a thorough characterization of AIMT cells from mice of different genetic background, age, and hygienic status by flow cytometry and multiomics approaches, including analyses of gene expression, TCR repertoire, and microbial colonization. Our data showed that AIMT cells are steadily present in mice, independent of their genetic background and hygienic status. Despite differences in their gene expression profiles, young and aged AIMT cells originate from identical clones. We identified that CD122 discriminates two major subsets of AIMT cells in a strain-independent manner. Whereas thymic CD122(LOW) AIMT cells (innate memory) prevail only in young animals with high thymic IL-4 production, peripheral CD122(HIGH) AIMT cells (virtual memory) dominate in aged mice. Cohousing with feral mice changed the bacterial colonization of laboratory strains but had only minimal effects on the CD8(+) T cell compartment, including AIMT cells.
Permanent Link: http://hdl.handle.net/11104/0320667