Epigenetic suppression of E-cadherin expression by Snail2 during the metastasis of colorectal cancer.

Abstract:

BACKGROUND:The transcription factor Snail2 is a repressor of E-cadherin expression during carcinogenesis; however, the specific mechanisms involved in this process in human colorectal cancer (CRC) remain largely unknown. METHOD:We checked the expression of Snail2 in several clinical CRC specimens. Then, we established Snail2-overexpressing and knockdown cell lines to determine the function of Snail2 during EMT and metastasis processes in CRC. In addition, we used luciferase reporter assay to explore how Snail2 inhibits the expression of E-cadherin and induces EMT. RESULTS:We found that the expression of Snail2 was higher in clinical specimens of colorectal cancer (CRC) compared to non-cancerous tissues. Overexpression of Snail2 induced migration and metastatic properties in CRC cells in vitro and in vivo. Furthermore, overexpression of Snail2 promoted the occurrence of the epithelial-mesenchymal transition (EMT), downregulating the expression of E-cadherin and upregulating that of vimentin. Specifically, Snail2 could interact with HDAC6 and then recruited HDAC6 and PRC2 to the promoter of E-cadherin and thus inhibited the expression of E-cadherin, promoting EMT and inducing invasion and metastasis of CRC. CONCLUSION:Our study reveals that Snail2 might epigenetically suppress the expression of E-cadherin during CRC metastasis.

journal_name

Clin Epigenetics

journal_title

Clinical epigenetics

authors

Hu Y,Dai M,Zheng Y,Wu J,Yu B,Zhang H,Kong W,Wu H,Yu X

doi

10.1186/s13148-018-0592-y

subject

Has Abstract

pub_date

2018-12-12 00:00:00

pages

154

issue

1

eissn

1868-7075

issn

1868-7083

pii

10.1186/s13148-018-0592-y

journal_volume

10

pub_type

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