Berberine, a Natural Plant Product, Activates AMP-Activated Protein Kinase With Beneficial Metabolic Effects in Diabetic and Insulin-Resistant States

  1. Yun S. Lee12,
  2. Woo S. Kim12,
  3. Kang H. Kim12,
  4. Myung J. Yoon1,
  5. Hye J. Cho1,
  6. Yun Shen34,
  7. Ji-Ming Ye3,
  8. Chul H. Lee5,
  9. Won K. Oh5,
  10. Chul T. Kim5,
  11. Cordula Hohnen-Behrens3,
  12. Alison Gosby3,
  13. Edward W. Kraegen3,
  14. David E. James3 and
  15. Jae B. Kim12
  1. 1Department of Biological Sciences, Seoul National University, Seoul, Korea
  2. 2Research Center for Cellulomics, Seoul, Korea
  3. 3Diabetes and Obesity Research Program, Garvan Institute of Medical Research, Darlinghurst, Sydney, New South Wales, Australia
  4. 4Shanghai Institute of Biological Sciences, Chinese Academy of Sciences, Shanghai, China
  5. 5Korea Research Institute of Bioscience and Biotechnology, Taejon, Korea
  1. Address correspondence and reprint requests to Jae B. Kim, PhD, Department of Biological Sciences, Seoul National University, San 56-1, Sillim-Dong, Kwanak-Gu, Seoul, Korea. E-mail: jaebkim{at}snu.ac.kr; or David E. James, PhD, DiabetesObesity Research Program, Garvan Institute of Medical Research, 384 Victoria St., Darlinghurst, Sydney, New South Wales 2010, Australia. E-mail: d.james{at}garvan.org.au

Abstract

Berberine has been shown to have antidiabetic properties, although its mode of action is not known. Here, we have investigated the metabolic effects of berberine in two animal models of insulin resistance and in insulin-responsive cell lines. Berberine reduced body weight and caused a significant improvement in glucose tolerance without altering food intake in db/db mice. Similarly, berberine reduced body weight and plasma triglycerides and improved insulin action in high-fat–fed Wistar rats. Berberine downregulated the expression of genes involved in lipogenesis and upregulated those involved in energy expenditure in adipose tissue and muscle. Berberine treatment resulted in increased AMP-activated protein kinase (AMPK) activity in 3T3-L1 adipocytes and L6 myotubes, increased GLUT4 translocation in L6 cells in a phosphatidylinositol 3′ kinase–independent manner, and reduced lipid accumulation in 3T3-L1 adipocytes. These findings suggest that berberine displays beneficial effects in the treatment of diabetes and obesity at least in part via stimulation of AMPK activity.

Footnotes

  • Y.S.L. and W.S.K. contributed equally to this study.

    Additional information on this article can be found in an online appendix at http://diabetes.diabetesjournals.org.

  • The costs of publication of this article were defrayed in part by the payment of page charges. The article must therefore be hereby marked “advertisement” in accordance with 18 U.S.C. Section 1734 solely to indicate this fact.

    • Accepted May 22, 2006.
    • Received January 4, 2006.
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