Carcinogenesis Advance Access originally published online on April 16, 2004
Carcinogenesis 2004 25(9):1611-1617; doi:10.1093/carcin/bgh163
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Carcinogenesis vol.25 no.9 © Oxford University Press 2004; all rights reserved.
ARTICLE |
Curcumin impairs tumor suppressor p53 function in colon cancer cells
1 Department of Oncological Sciences and 2 Department of Medicinal Chemistry, University of Utah, Huntsman Cancer Institute, Salt Lake City, UT 84112, USA
3 To whom correspondence should be addressed Email: philip.moos{at}hci.utah.edu
Curcumin (diferuloylmethane) is being considered as a potential chemopreventive agent in humans. In vitro it inhibits transcription by NF-
B, and the activity of lipoxygenase or cyclooxygenase enzymes, which facilitate tumor progression. In vivo it is protective in rodent models of chemical carcinogenesis. Curcumin contains an
,ß-unsaturated ketone, a reactive chemical substituent that is responsible for its repression of NF-
B. In compounds other than curcumin this same electrophilic moiety is associated with inactivation of the tumor suppressor, p53. Here we report that curcumin behaves analogously to these compounds. It disrupts the conformation of the p53 protein required for its serine phosphorylation, its binding to DNA, its transactivation of p53-responsive genes and p53-mediated cell cycle arrest.
![]()
CiteULike
Connotea
Del.icio.us What's this?
This article has been cited by other articles:
![]() |
J. Fang, J. Lu, and A. Holmgren Thioredoxin Reductase Is Irreversibly Modified by Curcumin: A NOVEL MOLECULAR MECHANISM FOR ITS ANTICANCER ACTIVITY J. Biol. Chem., July 1, 2005; 280(26): 25284 - 25290. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. Tsvetkov, G. Asher, V. Reiss, Y. Shaul, L. Sachs, and J. Lotem Inhibition of NAD(P)H:quinone oxidoreductase 1 activity and induction of p53 degradation by the natural phenolic compound curcumin PNAS, April 12, 2005; 102(15): 5535 - 5540. [Abstract] [Full Text] [PDF] |
||||

