Unknown

Dataset Information

0

B cell adaptor for PI3-kinase (BCAP) modulates CD8+ effector and memory T cell differentiation.


ABSTRACT: CD8+ T cells respond to signals via the T cell receptor (TCR), costimulatory molecules, and immunoregulatory cytokines by developing into diverse populations of effector and memory cells. The relative strength of phosphoinositide 3-kinase (PI3K) signaling early in the T cell response can dramatically influence downstream effector and memory T cell differentiation. We show that initial PI3K signaling during T cell activation results in up-regulation of the signaling scaffold B cell adaptor for PI3K (BCAP), which further potentiates PI3K signaling and promotes the accumulation of CD8+ T cells with a terminally differentiated effector phenotype. Accordingly, BCAP-deficient CD8+ T cells have attenuated clonal expansion and altered effector and memory T cell development following infection with Listeria monocytogenes Thus, induction of BCAP serves as a positive feedback circuit to enhance PI3K signaling in activated CD8+ T cells, thereby acting as a molecular checkpoint regulating effector and memory T cell development.

SUBMITTER: Singh MD 

PROVIDER: S-EPMC6122975 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC3208080 | biostudies-literature
| S-EPMC3331885 | biostudies-literature
| S-EPMC5130099 | biostudies-literature
| S-EPMC2707501 | biostudies-literature
| S-EPMC5458166 | biostudies-literature
| S-EPMC3578118 | biostudies-literature
| S-EPMC4346633 | biostudies-literature
| S-EPMC4769930 | biostudies-literature
| S-EPMC8710726 | biostudies-literature
| S-EPMC6306427 | biostudies-other