Bile acids repress E-cadherin through the induction of Snail and increase cancer invasiveness in human hepatobiliary carcinoma

被引：38

作者：

Fukase, Koji ^{[1
]}

Ohtsuka, Hideo ^{[1
]}

Onogawa, Tohru ^{[1
]}

Oshio, Hiroshi ^{[1
]}

Ii, Takayuki ^{[1
]}

Mutoh, Mitsuhisa ^{[1
]}

Katayose, Yu ^{[1
]}

Rikiyama, Toshiki ^{[1
]}

Oikawa, Masaya ^{[1
]}

Motoi, Fuyuhiko ^{[1
]}

Egawa, Shinichi ^{[1
]}

Abe, Takaaki ^{[2
]}

Unno, Michiaki ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Med Sci, Dept Surg, Sendai, Miyagi 9808574, Japan

[2] Tohoku Univ, Grad Sch Med Sci, Dept Nephrol Endocrinol & Vasc Med, Sendai, Miyagi 9808574, Japan

来源：

CANCER SCIENCE | 2008年 / 99卷 / 09期

关键词：

D O I：

10.1111/j.1349-7006.2008.00898.x

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Although some kinds of bile acids have been implicated in colorectal cancer development, the mechanism of cancer progression remains unexplored in hepatobiliary cancer. From our personal results using complementary DNA microarray, we found that chenodeoxycholic acid (CDCA) induced Snail expression in human carcinoma cell lines derived from hepatocellular carcinoma and cholangiocarcinoma. Snail expression plays an important role in the regulation of E-cadherin and in the acquisition of invasive potential in many types of human cancers including hepatocellular carcinoma. We found that CDCA and lithocholic acid (LCA) induced Snail expression in a concentration-dependent manner and down-regulated E-cadherin expression in hepatocellular carcinoma and cholangiocarcinoma cell lines. Moreover, Snail short interference RNA (siRNA) treatment reduced the down-regulation of E-cadherin by CDCA or LCA. Luciferase analysis demonstrated that the promoter region from -111 to -24 relative to the transcriptional start site was necessary for this induction and, at least in part, nuclear factor Y (NF-Y) and stimulating protein 1 (Sp1) might be an inducer of Snail expression in response to bile acids. In addition, using an in vitro wound healing assay and invasion assay, we observed that CDCA and LCA induced cell migration and invasion. These results suggest that bile acids repress E-cadherin through the induction of transcription factor Snail and increase cancer invasiveness in human hepatocellular carcinoma and cholangiocarcinoma. Inhibition of this bile acid-stimulated pathway may prove useful as an adjuvant in the therapy of hepatocellular carcinoma.

引用

页码：1785 / 1792

页数：8

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