The protein deacetylase SIRT2 exerts metabolic control over adaptive β cell proliferation.

ABSTRACT: Selective and controlled expansion of endogenous β cells has been pursued as a potential therapy for diabetes. Ideally, such therapies would preserve feedback control of β cell proliferation to avoid excessive β cell expansion. Here, we identified a regulator of β cell proliferation whose inactivation resulted in controlled β cell expansion: the protein deacetylase sirtuin 2 (SIRT2). Sirt2 deletion in β cells of mice increased β cell proliferation during hyperglycemia with little effect under homeostatic conditions, indicating preservation of feedback control of β cell mass. SIRT2 restrains proliferation of human islet β cells, demonstrating conserved SIRT2 function. Analysis of acetylated proteins in islets treated with a SIRT2 inhibitor revealed that SIRT2 deacetylates enzymes involved i

SUBMITTER: Wortham M 

PROVIDER: S-EPMC12483614 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature