title: Curcumin inhibits cell migration of human colon cancer colo 205 cells through the inhibition of nuclear factor kappa B /p65 and down-regulates cyclooxygenase-2 and matrix metalloproteinase-2 expressions.
abstract: Curcumin (diferuloylmethane) is a chemical derived from several Curcuma species (turmeric), possessing anti-inflammatory and antioxidant properties and which, thus, may be a potential anticancer drug. However, its mechanism of action is not fully understood. Our previous studies had shown that curcumin induced cytotoxicity, cell cycle arrest and apoptosis in human colon cancer colo 205 cells. In this study, curcumin affected the levels of NF-kappaB/ p65 in a time-dependent manner but did not affect NF-kappaB/ p50, based on Western blotting methods. In vitro experiments revealed that curcumin inhibited Cox-2 levels, but promoted those of Cox-1 in colo 205 cells. Curcumin also inhibited MMP-2 levels and promoted MMP-9 levels, but did not affect MMP-7 levels, based on Western blotting assays. These effects were also confirmed by cDNA microarray. Remarkably, curcumin not only exerted its effect on the protein levels of NF-kappaB, Cox-1 and -2, MMP-2 and -7, but also directly inhibited their mRNA levels. Curcumin was also found to significantly repress the in vitro invasion of colo 205 cells.
authors.affiliation: School of Chinese Medicine, China Medical University, Taichung City 404, Taiwan, ROC.
authors.forename: Chin-Cheng
authors.initials: CC
authors.lastname: Su
authors.forename: Guang-Wei
authors.initials: GW
authors.lastname: Chen
authors.forename: Jaung-Geng
authors.initials: JG
authors.lastname: Lin
authors.forename: Lii-Tzu
authors.initials: LT
authors.lastname: Wu
authors.forename: Jing-Gung
authors.initials: JG
authors.lastname: Chung
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology; D015153:Blotting, Western; D002465:Cell Movement / Q000187:drug effects* / Q000502:physiology; D003110:Colonic Neoplasms / Q000188:drug therapy* / Q000201:enzymology / Q000473:pathology; D003474:Curcumin / Q000494:pharmacology*; D051545:Cyclooxygenase 1 / Q000096:biosynthesis / Q000235:genetics; D051546:Cyclooxygenase 2 / Q000096:biosynthesis* / Q000235:genetics; D015536:Down-Regulation / Q000187:drug effects; D006801:Humans; D007527:Isoenzymes / Q000096:biosynthesis / Q000235:genetics; D020778:Matrix Metalloproteinase 2 / Q000096:biosynthesis* / Q000235:genetics; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics; D051996:Transcription Factor RelA / Q000037:antagonists & inhibitors*
chemical_list: D000970:Antineoplastic Agents; D007527:Isoenzymes; D012333:RNA, Messenger; D051996:Transcription Factor RelA; D051545:Cyclooxygenase 1; D051546:Cyclooxygenase 2; D020778:Matrix Metalloproteinase 2; D003474:Curcumin