Published in:
Open Access
01-12-2010 | Research
Induction of gastric cancer cell adhesion through transforming growth factor-beta1-mediated peritoneal fibrosis
Authors:
Zhi-Dong Lv, Di Na, Fu-Nan Liu, Zong-Min Du, Zhe Sun, Zhen Li, Xiao-Yang Ma, Zhen-Ning Wang, Hui-Mian Xu
Published in:
Journal of Experimental & Clinical Cancer Research
|
Issue 1/2010
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Abstract
Background
Peritoneal dissemination is one of the main causes of death in gastric cancer patients. Transforming growth factor-beta1 (TGF-β1), one of the most potent fibrotic stimuli for mesothelial cells, may play a key role in this processing. The purpose of this study is to elucidate the effects of TGF-β1 on regulation of gastric cancer adhesion to mesothelial cells.
Methods
Peritoneal tissues and peritoneal wash fluid were obtained for hematoxylin and eosin staining or ELISA to measure fibrosis and TGF-β1 levels, respectively. The peritoneal mesothelial cell line, HMrSV5, was used to determine the role of TGF-β1 in regulation of gastric cancer cell adhesion to mesothelial cells and expression of collagen, fibronectin, and Smad 2/3 by using adhesion assay, western blot, and RT-PCR.
Results
The data showed that TGF-β1 treatment was able to induce collagen III and fibronectin expression in the mesothelial cells, which was associated with an increased adhesion ability of gastric cancer cells, but knockdown of minimal sites of cell binding domain of extracellular matrix can partially inhibit these effects.
Conclusion
Peritoneal fibrosis induced by TGF-β1 may provide a favorable environment for the dissemination of gastric cancer.