論文

筆頭著者
2017年9月

Dual Regulation of Gluconeogenesis by Insulin and Glucose in the Proximal Tubules of the Kidney

Diabetes
  • Sasaki M *
  • Sasako T *
  • Kubota N
  • Sakurai Y
  • Takamoto I
  • Kubota T
  • Inagi R
  • Seki G
  • Goto M
  • Ueki K
  • Nangaku M
  • Jomori T
  • Kadowaki T (*: co-first authors)
  • 全て表示

66
9
開始ページ
2339
終了ページ
2350
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.2337/db16-1602
出版者・発行元
AMER DIABETES ASSOC

Growing attention has been focused on the roles of the proximal tubules (PTs) of the kidney in glucose metabolism, including the mechanism of regulation of gluconeogenesis. In this study, we found that PT-specific insulin receptor substrate 1/2 double-knockout mice, established by using the newly generated sodium-glucose cotransporter 2 (SGLT2)-Cre transgenic mice, exhibited impaired insulin signaling and upregulated gluconeogenic gene expression and renal gluconeogenesis, resulting in systemic insulin resistance. In contrast, in streptozotocin-treated mice, although insulin action was impaired in the PTs, the gluconeogenic gene expression was unexpectedly downregulated in the renal cortex, which was restored by administration of an SGLT1/2 inhibitor. In the HK-2 cells, the gluconeogenic gene expression was suppressed by insulin, accompanied by phosphorylation and inactivation of forkhead box transcription factor 1 (FoxO1). In contrast, glucose deacetylated peroxisome proliferator-activated receptor g coactivator 1-alpha (PGC1 alpha), a coactivator of FoxO1, via sirtuin 1, suppressing the gluconeogenic gene expression, which was reversed by inhibition of glucose reabsorption. These data suggest that both insulin signaling and glucose reabsorption suppress the gluconeogenic gene expression by inactivation of FoxO1 and PGC1 alpha, respectively, providing insight into novel mechanisms underlying the regulation of gluconeogenesis in the PTs.

リンク情報
DOI
https://doi.org/10.2337/db16-1602
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/28630133
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000408156600004&DestApp=WOS_CPL
ID情報
  • DOI : 10.2337/db16-1602
  • ISSN : 0012-1797
  • eISSN : 1939-327X
  • PubMed ID : 28630133
  • Web of Science ID : WOS:000408156600004

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