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Erschienen in: Journal of Cancer Research and Clinical Oncology 11/2017

26.07.2017 | Original Article - Cancer Research

EZH2 is involved in silencing of WNT5A during epithelial–mesenchymal transition of colon cancer cell line

verfasst von: Jianxin Tao, Liping Shi, Longchang Huang, Haoze Shi, Hang Chen, Yixin Wang, Tong Wang

Erschienen in: Journal of Cancer Research and Clinical Oncology | Ausgabe 11/2017

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Abstract

Purpose

Transforming growth factor-β (TGF-β) induction of epithelial–mesenchymal transition (EMT) in SW480 was established as a system for studies of colon cancer metastasis. However, the epigenetic mechanisms underlying this process remain unknown. In mammal, polycomb repressive complex-2 (PRC2) is a highly conserved histone methyltransferase involved in epigenetic regulations. Enhancer of zeste Homolog 2 (EZH2) is the catalytic subunit of PRC2, which catalyzes methylation of lysine 27 of histone H3 (H3K27).

Methods

An inducible EMT system in colorectal cancer was utilized to study its mechanistic and phenotypic changes. Particularly, gene expression analysis was studied after immunoprecipitation.

Results

In this study, we reported that EZH2 is significantly enriched in the promoter region of WNT5A after TGF-β induction in SW480 colon cancer cell line, which in turn silenced the expression of WNT5A. Furthermore, EZH2 inhibitor antagonized the TGF-β-induced morphological conversion associated with epithelial–mesenchymal transition (EMT). Conversely, inhibition of histone H3K27me3 reader CBX does not affect the WNT5A expression level during TGF-β-induced EMT.

Conclusions

Our results indicate that EZH2 was essential for the silencing of WNT5A during TGF-β-induced epithelial–mesenchymal transition of colon cancer cells.
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Metadaten
Titel
EZH2 is involved in silencing of WNT5A during epithelial–mesenchymal transition of colon cancer cell line
verfasst von
Jianxin Tao
Liping Shi
Longchang Huang
Haoze Shi
Hang Chen
Yixin Wang
Tong Wang
Publikationsdatum
26.07.2017
Verlag
Springer Berlin Heidelberg
Erschienen in
Journal of Cancer Research and Clinical Oncology / Ausgabe 11/2017
Print ISSN: 0171-5216
Elektronische ISSN: 1432-1335
DOI
https://doi.org/10.1007/s00432-017-2479-2

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