Dendritic cell SIRT1-HIF1α axis programs the differentiation of CD4+ T cells through IL-12 and TGF-β1.

ABSTRACT: The differentiation of naive CD4(+) T cells into distinct lineages plays critical roles in mediating adaptive immunity or maintaining immune tolerance. In addition to being a first line of defense, the innate immune system also actively instructs adaptive immunity through antigen presentation and immunoregulatory cytokine production. Here we found that sirtuin 1 (SIRT1), a type III histone deacetylase, plays an essential role in mediating proinflammatory signaling in dendritic cells (DCs), consequentially modulating the balance of proinflammatory T helper type 1 (TH1) cells and antiinflammatory Foxp3(+) regulatory T cells (T(reg) cells). Genetic deletion of SIRT1 in DCs restrained the generation of T(reg) cells while driving TH1 development, resulting in an enhanced T-cell-mediated inflamm

SUBMITTER: Liu G 

PROVIDER: S-EPMC4352801 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature