Overexpression of the adiponectin gene mimics the metabolic and stress resistance effects of calorie restriction, but not the anti-tumor effect

Ryotaro Kamohara, Haruyoshi Yamaza, Tomoshi Tsuchiya, Toshimitsu Komatsu, Seongjoon Park, Hiroko Hayashi, Takuya Chiba, Ryoichi Mori, Shuichi Otabe, Kentaro Yamada, Takeshi Nagayasu, Isao Shimokawa*

*この研究の対応する著者

研究成果査読

1 被引用数 (Scopus)

抄録

Adiponectin (Adipoq), a peptide hormone secreted from the white adipose tissue, may play a role in the anti-aging and/or anti-tumor effects of calorie restriction (CR). We analyzed metabolic traits in Adipoq gene-overexpressing mice fed ad libitum with a regular diet (RD) or a high-fat diet (HFD), or fed 30% CR of RD initiated at 12. weeks of age. Adipoq-RD and -HFD mice at 6. months of age showed reduced blood glucose and insulin concentrations, and thus increased insulin sensitivity, compared with WT mice fed a RD or a HFD. In the epididymal white adipose tissue in Adipoq mice, senescence-like changes such as upregulation of p53 protein and of biomarkers of inflammation, Cd68 and Ccl2 mRNA, were ameliorated compared with WT-RD and WT-HFD mouse tissues. Resistance to stress induced by lipopolysaccharide was also strengthened in Adipoq mice compared with WT mice. These metabolic changes and stress resistance were also noted in the WT-CR mice, suggesting that Adipoq plays a part in the effect of CR. In contrast, in an allograft tumor growth model, tumor growth was not inhibited in Adipoq mice. The present findings suggest that Adipoq plays a part in the anti-aging, but not in the anti-tumor, effects of CR.

本文言語English
ページ(範囲)46-54
ページ数9
ジャーナルExperimental Gerontology
64
DOI
出版ステータスPublished - 2015 4 1
外部発表はい

ASJC Scopus subject areas

  • 生化学
  • 加齢科学
  • 分子生物学
  • 遺伝学
  • 内分泌学
  • 細胞生物学

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