Nkx6.1-mediated insulin secretion and β-cell proliferation is dependent on upregulation of c-Fos.

Journal Article (Letter)

Understanding the molecular pathways that enhance β-cell proliferation, survival, and insulin secretion may be useful to improve treatments for diabetes. Nkx6.1 induces proliferation through the Nr4a nuclear receptors, and improves insulin secretion and survival through the peptide hormone VGF. Here we demonstrate that Nkx6.1-mediated upregulation of Nr4a1, Nr4a3, and VGF is dependent on c-Fos expression. c-Fos overexpression results in activation of Nkx6.1 responsive genes and increases β-cell proliferation, insulin secretion, and cellular survival. c-Fos knockdown impedes Nkx6.1-mediated β-cell proliferation and insulin secretion. These data demonstrate that c-Fos is critical for Nkx6.1-mediated expansion of functional β-cell mass.

Full Text

Duke Authors

Cited Authors

  • Ray, JD; Kener, KB; Bitner, BF; Wright, BJ; Ballard, MS; Barrett, EJ; Hill, JT; Moss, LG; Tessem, JS

Published Date

  • June 2016

Published In

Volume / Issue

  • 590 / 12

Start / End Page

  • 1791 - 1803

PubMed ID

  • 27164028

Electronic International Standard Serial Number (EISSN)

  • 1873-3468

International Standard Serial Number (ISSN)

  • 0014-5793

Digital Object Identifier (DOI)

  • 10.1002/1873-3468.12208


  • eng