Repression of HNF1α-mediated transcription by amino-terminal enhancer of split (AES)

Eun Hee Han, Amanda A. Gorman, Puja Singh, Young In Chi

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4 Scopus citations


HNF1α (Hepatocyte Nuclear Factor 1α) is one of the master regulators in pancreatic beta-cell development and function, and the mutations in Hnf1α are the most common monogenic causes of diabetes mellitus. As a member of the POU transcription factor family, HNF1α exerts its gene regulatory function through various molecular interactions; however, there is a paucity of knowledge in their functional complex formation. In this study, we identified the Groucho protein AES (Amino-terminal Enhancer of Split) as a HNF1α-specific physical binding partner and functional repressor of HNF1α-mediated transcription, which has a direct link to glucose-stimulated insulin secretion in beta-cells that is impaired in the HNF1α mutation-driven diabetes.

Original languageEnglish (US)
Pages (from-to)14-20
Number of pages7
JournalBiochemical and Biophysical Research Communications
Issue number1-2
StatePublished - Dec 4 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Inc. All rights reserved.


  • AES
  • Diabetes
  • Gene regulation
  • HNF1α
  • Homeodomain
  • Insulin secretion
  • POU transcription factor
  • Protein-protein interaction


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