TGF-? Controls the Formation of Kidney-Resident T Cells via Promoting Effector T Cell Extravasation.

ABSTRACT: Tissue-resident memory T (TRM) cells, a population of noncirculating memory T cells, are one of the essential components of immunological memory in both mouse and human. Although CD69+CD103+ TRM cells represent a major TRM cell population in barrier tissues including the mucosal surface and the skin, CD69+CD103- TRM cells dominate most nonbarrier tissues, such as the kidney. TGF-? is required for the differentiation of CD69+CD103+ TRM cells in barrier tissues. However, the developmental control of CD69+CD103- TRM cells in nonbarrier tissues remains largely unknown and the involvement of TGF-? signaling is less clear. In this study we demonstrated that TGF-? promoted the formation of kidney-resident T cells via enhancing the tissue entry of effector T cells. Mechanistically, TGF-? enhanced E- and P-selectin and inflammatory chemokine-mediated extravasation of effector T cells. Thus TGF-? controls the first developmental checkpoint of TRM cell differentiation in nonbarrier tissues.

SUBMITTER: Ma C 

PROVIDER: S-EPMC5225110 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature