4-Nonylphenol-enhanced EZH2 and RNF2 expression, H3K27me3 and H2AK119ub1 marks resulting in silencing of p21CDKN1A in vitro.

Abstract:

:Aim: To examine the impact of 4-nonylphenol (4-NP), on the expression of polycomb repressive complexes and cellular proliferation. Materials & methods: Cell proliferation assays, quantitative PCR, Western blotting, luciferase reporter assay, chromatin immunoprecipitation-quantitative PCR were used for the study. Results: The 4-NP at 100 nM concentration significantly increased proliferation of MCF-7 cells. It enhanced the expression of RNF2-BMI1 and EZH2-SUZ12 and concomitantly increased H2AK119ub1 and H3K27me3 repressive marks at p21 proximal promoter resulting in its reduced expression. Selective inhibition of RNF2 or EZH2 reverted the 4-NP action. The phospho-CREB, SP1 and E2F-1 are enriched at proximal promoter of RNF2 and EZH2 and cyclin D1, but not p21. Conclusion: The 4-NP-mediated upregulation of RNF2 and EZH2 resulted in epigenetic silencing of p21.

journal_name

Epigenomics

journal_title

Epigenomics

authors

Ghosh K,Chatterjee B,Maheswari U,Athifa M,Kanade SR

doi

10.2217/epi-2018-0175

subject

Has Abstract

pub_date

2019-06-01 00:00:00

pages

899-916

issue

8

eissn

1750-1911

issn

1750-192X

journal_volume

11

pub_type

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