期刊
JOURNAL OF IMMUNOLOGY
卷 200, 期 1, 页码 139-146出版社
AMER ASSOC IMMUNOLOGISTS
DOI: 10.4049/jimmunol.1700564
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资金
- Agence National de la Recherche [ANR-14-CE14-0030]
- Ligue contre le Cancer
- Fondation ARC pour la Recherche sur le Cancer
- European Union Seventh Framework Programme Marie Curie Action [PCIG11-GA-2012-3221170]
- French Government's Invest in the Future Program
- Institut National du Cancer (Soutien a la Recherche Formation en Recherche Translationelle)
- Institut Pasteur
- Agence Nationale de la Recherche (ANR) [ANR-14-CE14-0030] Funding Source: Agence Nationale de la Recherche (ANR)
The preimmune repertoire consists of mature T lymphocytes that have not yet been stimulated in the periphery. Memory phenotype (MP) cells have been reported as part of the preimmune repertoire (i.e., T cells bearing memory markers despite lack of engagement with cognate Ag); however, little is known about their trafficking and function. In this study, we hypothesized that MP cells, naive to TCR stimulation, constitute a transient population that traffics to tissues during development. Using mutant and transgenic animals with a monospecific TCR, we discovered increased numbers of MP CD8(+) T cells circulating in nonimmunized Cxcr3(-/-) and Cxcl10(-/-) mice compared with wild-type animals. Phenotypic differences included decreased numbers of preimmune MP Ag-specific T cells in the skin and thymus and a distinct pattern of activation upon TCR engagement. Our results show for the first time, to our knowledge, an important role for CXCR3 and CXCL10 in the tissue distribution of preimmune MP cells.
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