Artemisinins Target GABA_A Receptor Signaling and Impair α Cell Identity.

ABSTRACT: Type 1 diabetes is characterized by the destruction of pancreatic β cells, and generating new insulin-producing cells from other cell types is a major aim of regenerative medicine. One promising approach is transdifferentiation of developmentally related pancreatic cell types, including glucagon-producing α cells. In a genetic model, loss of the master regulatory transcription factor Arx is sufficient to induce the conversion of α cells to functional β-like cells. Here, we identify artemisinins as small molecules that functionally repress Arx by causing its translocation to the cytoplasm. We show that the protein gephyrin is the mammalian target of these antimalarial drugs and that the mechanism of action of these molecules depends on the enhancement of GABA_A receptor signaling.

SUBMITTER: Li J 

PROVIDER: S-EPMC5236063 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature