Phosphatase PP2A is essential for T_H17 differentiation.

ABSTRACT: Phosphatase PP2A expression levels are positively correlated to the clinical severity of systemic lupus erythematosus (SLE) and IL17A cytokine overproduction, indicating a potential role of PP2A in controlling T_H17 differentiation and inflammation. By generating a mouse strain with ablation of the catalytic subunit α of PP2A in peripheral mature T cells (PP2A cKO), we demonstrate that the PP2A complex is essential for T_H17 differentiation. These PP2A cKO mice had reduced T_H17 cell numbers and less severe disease in an experimental autoimmune encephalomyelitis (EAE) model. PP2A deficiency also ablated C-terminal phosphorylation of SMAD2 but increased C-terminal phosphorylation of SMAD3. By regulating the activity of RORγt via binding, the changes in the phos

SUBMITTER: Xu Q 

PROVIDER: S-EPMC6338861 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature