The histone demethylase Kdm6b regulates the maturation and cytotoxicity of TCRαβ⁺CD8αα⁺ intestinal intraepithelial lymphocytes.

ABSTRACT: Intestinal intraepithelial lymphocytes (IELs) are distributed along the length of the intestine and are considered the frontline of immune surveillance. The precise molecular mechanisms, especially epigenetic regulation, of their development and function are poorly understood. The trimethylation of histone 3 at lysine 27 (H3K27Me3) is a kind of histone modifications and associated with gene repression. Kdm6b is an epigenetic enzyme responsible for the demethylation of H3K27Me3 and thus promotes gene expression. Here we identified Kdm6b as an important intracellular regulator of small intestinal IELs. Mice genetically deficient for Kdm6b showed greatly reduced numbers of TCRαβ⁺CD8αα⁺ IELs. In the absence of Kdm6b, TCRαβ⁺CD8αα⁺ IELs exhibited incre

SUBMITTER: Zhang H 

PROVIDER: S-EPMC9287323 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature