Decreased synthesis of matrix metalloproteinase-7 and adhesion to the extracellular matrix proteins of human colon cancer cells treated with troglitazone.

Published

Journal Article

PURPOSE: In the present study, we investigated the effect of troglitazone, a selective ligand and agonist of PPAR-gamma, on the metastatic potential of human colon cancer cells. METHODS: High- and low-PPAR-gamma expression clones of the colon cancer cell line, HT29, namely clones 21 and 3 respectively, were used. We investigated the effect of troglitazone on the proliferation, on the adhesion to extracellular matrix proteins and on the synthesis of matrix metalloproteinases (MMPs) of colon cancer cells. RESULTS: Troglitazone inhibited the proliferation of both subclones, in a dose-dependent manner, and the inhibitory effect correlated with the level of PPAR-gamma expression. Troglitazone strongly inhibited the production of MMP-7, an enzyme associated with invasiveness of cancer cells, by both subclones. In addition, troglitazone caused a strong decrease in the adhesion of clone 21 to extracellular matrix (ECM) proteins, laminin and type IV collagen. This effect was independent of beta1-integrins expression CONCLUSION: In addition to inhibition of cancer cell growth, troglitazone had an inhibitory effect on two important events associated with the metastatic potential of cancer cells, production of MMPs and adhesion to ECM proteins. Consequently, troglitazone is a promising agent for the treatment and prevention of colon cancer metastasis.

Full Text

Duke Authors

Cited Authors

  • Sunami, E; Tsuno, NH; Kitayama, J; Saito, S; Osada, T; Yamaguchi, H; Tomozawa, S; Tsuruo, T; Shibata, Y; Nagawa, H

Published Date

  • 2002

Published In

Volume / Issue

  • 32 / 4

Start / End Page

  • 343 - 350

PubMed ID

  • 12027200

Pubmed Central ID

  • 12027200

International Standard Serial Number (ISSN)

  • 0941-1291

Digital Object Identifier (DOI)

  • 10.1007/s005950200049

Language

  • eng

Conference Location

  • Japan