Unknown

Dataset Information

0

The Erk2 MAPK regulates CD8 T cell proliferation and survival.


ABSTRACT: The magnitude of T cell responses is determined by proliferation and survival decisions made by the responding cells. We now demonstrate that the Erk MAPK pathway plays a critical role in these cell fate decisions within CD8 T cells. While Erk1 is dispensable for all aspects of CD8 T cell activation, Erk2 is required for the proliferation of CD8 T cells activated in the absence of costimulation. Surprisingly, Erk2 is not required for proliferation following the addition of a costimulatory signal in vitro, or upon viral infection in vivo, but regulates the size of the responding population by enhancing cell survival. An important component of this Erk2-derived signal is the transcriptional regulation of Bcl-2 family members Bcl-x(L) and Bim, and impaired Erk2-deficient CD8 T cell survival can be rescued by genetic ablation of Bim. These studies ascribe multifaceted functions specific to Erk2 in CD8 T cell activation, proliferation, and survival.

SUBMITTER: D'Souza WN 

PROVIDER: S-EPMC2847891 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature

altmetric image

Publications

The Erk2 MAPK regulates CD8 T cell proliferation and survival.

D'Souza Warren N WN   Chang Chiung-Fang CF   Fischer April M AM   Li Manqing M   Hedrick Stephen M SM  

Journal of immunology (Baltimore, Md. : 1950) 20081201 11


The magnitude of T cell responses is determined by proliferation and survival decisions made by the responding cells. We now demonstrate that the Erk MAPK pathway plays a critical role in these cell fate decisions within CD8 T cells. While Erk1 is dispensable for all aspects of CD8 T cell activation, Erk2 is required for the proliferation of CD8 T cells activated in the absence of costimulation. Surprisingly, Erk2 is not required for proliferation following the addition of a costimulatory signal  ...[more]

Similar Datasets

| S-EPMC5894814 | biostudies-literature
| S-EPMC3974985 | biostudies-other
| S-EPMC2579379 | biostudies-literature
| S-EPMC4409559 | biostudies-literature
| S-EPMC6834673 | biostudies-literature
| S-EPMC8436365 | biostudies-literature
2024-01-17 | PXD045234 | Pride
| S-EPMC4196968 | biostudies-literature
| S-EPMC5894816 | biostudies-literature
| S-EPMC9670436 | biostudies-literature