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BMC Med. 2011 Apr 6;9:33. doi: 10.1186/1741-7015-9-33.

Understanding the benefit of metformin use in cancer treatment.

Author information

1
Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada.

Abstract

Biguanides have been developed for the treatment of hyperglycemia and type 2 diabetes. Recently, metformin, the most widely prescribed biguanide, has emerged as a potential anticancer agent. Epidemiological, preclinical and clinical evidence supports the use of metformin as a cancer therapeutic. The ability of metformin to lower circulating insulin may be particularly important for the treatment of cancers known to be associated with hyperinsulinemia, such as those of the breast and colon. Moreover, metformin may exhibit direct inhibitory effects on cancer cells by inhibiting mammalian target of rapamycin (mTOR) signaling and protein synthesis. The evidence supporting a role for metformin in cancer therapy and its potential molecular mechanisms of action are discussed.

PMID:
21470407
PMCID:
PMC3224599
DOI:
10.1186/1741-7015-9-33
[Indexed for MEDLINE]
Free PMC Article

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