PubMed ID: 21401048
Author(s): Kenealey JD, Subramanian L, Van Ginkel PR, Darjatmoko S, Lindstrom MJ, Somoza V, Ghosh SK, Song Z, Hsung RP, Kwon GS, Eliceiri KW, Albert DM, Polans AS. Resveratrol metabolites do not elicit early pro-apoptotic mechanisms in neuroblastoma cells. J Agric Food Chem. 2011 May 11;59(9):4979-86. doi: 10.1021/jf104901g. Epub 2011 Apr 12. PMID 21401048
Journal: Journal Of Agricultural And Food Chemistry, Volume 59, Issue 9, May 2011
Resveratrol, a nontoxic polyphenol, has been shown to inhibit tumor growth in a xenograft mouse model of neuroblasoma. However, resveratrol is rapidly metabolized, mainly to its glucuronidated and sulfated derivatives. This study demonstrates that resveratrol alone, and not the glucuronidated or sulfated metabolites, is taken up into tumor cells, induces a rise in [Ca(2+)](i), and ultimately leads to a decrease in tumor cell viability. A new water-soluble resveratrol formulation was delivered directly at the site of the tumor in a neuroblastoma mouse model. The amount of unmodified resveratrol associated with the tumor increased more than 1000-fold. The increase of unmodified resveratrol associated with the tumor resulted in tumor regression. The number of residual tumor cells that remained viable also decreased as the ratio of the metabolites relative to unmodified resveratrol declined.