期刊
FEBS LETTERS
卷 590, 期 12, 页码 1791-1803出版社
WILEY
DOI: 10.1002/1873-3468.12208
关键词
c-Fos; Nkx6.1; Nr4a1; Nr4a3; VGF; beta-cell
资金
- BYU MEG grant
- BYU ORCA grants
Understanding the molecular pathways that enhance beta-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 beta-cell proliferation, insulin secretion, and cellular survival. c-Fos knockdown impedes Nkx6.1-mediated beta-cell proliferation and insulin secretion. These data demonstrate that c-Fos is critical for Nkx6.1-mediated expansion of functional beta-cell mass.
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