Neuronal signals regulate obesity induced β-cell proliferation by FoxM1 dependent mechanism

Junpei Yamamoto, Junta Imai, Tomohito Izumi, Hironori Takahashi, Yohei Kawana, Kei Takahashi, Shinjiro Kodama, Keizo Kaneko, Junhong Gao, Kenji Uno, Shojiro Sawada, Tomoichiro Asano, Vladimir V. Kalinichenko, Etsuo A. Susaki, Makoto Kanzaki, Hiroki R. Ueda, Yasushi Ishigaki, Tetsuya Yamada, Hideki Katagiri

研究成果: Article査読

38 被引用数 (Scopus)

抄録

Under insulin-resistant conditions such as obesity, pancreatic β-cells proliferate to prevent blood glucose elevations. A liver-brain-pancreas neuronal relay plays an important role in this process. Here, we show the molecular mechanism underlying this compensatory β-cell proliferation. We identify FoxM1 activation in islets from neuronal relay-stimulated mice. Blockade of this relay, including vagotomy, inhibits obesity-induced activation of the β-cell FoxM1 pathway and suppresses β-cell expansion. Inducible β-cell-specific FoxM1 deficiency also blocks compensatory β-cell proliferation. In isolated islets, carbachol and PACAP/VIP synergistically promote β-cell proliferation through a FoxM1-dependent mechanism. These findings indicate that vagal nerves that release several neurotransmitters may allow simultaneous activation of multiple pathways in β-cells selectively, thereby efficiently promoting β-cell proliferation and maintaining glucose homeostasis during obesity development. This neuronal signal-mediated mechanism holds potential for developing novel approaches to regenerating pancreatic β-cells.

本文言語English
論文番号1930
ジャーナルNature communications
8
1
DOI
出版ステータスPublished - 2017 12 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 生化学、遺伝学、分子生物学(全般)
  • 物理学および天文学(全般)

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