HDAC4 mutations cause diabetes and induce β-cell FoxO1 nuclear exclusion.

ABSTRACT:

Background

Studying patients with rare Mendelian diabetes has uncovered molecular mechanisms regulating β-cell pathophysiology. Previous studies have shown that Class IIa histone deacetylases (HDAC4, 5, 7, and 9) modulate mammalian pancreatic endocrine cell function and glucose homeostasis.

Methods

We performed exome sequencing in one adolescent nonautoimmune diabetic patient and detected one de novo predicted disease-causing HDAC4 variant (p.His227Arg). We screened our pediatric diabetes cohort with unknown etiology using Sanger sequencing. In mouse pancreatic β-cell lines (Min6 and SJ cells), we performed insulin secretion assay and quantitative RT-PCR to measure the β-cell function transfected with the detected HDAC4 variants and wild type. We carried out immunostaining a

SUBMITTER: Gong M 

PROVIDER: S-EPMC6503015 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature