H3K27me3 Inactivates SFRP1 to Promote Cell Proliferation Via Wnt/β-Catenin Signaling Pathway in Esophageal Squamous Cell Carcinoma

Overview

Journal Dig Dis Sci

Specialty Gastroenterology

Date 2023 Mar 18

PMID 36933113

Authors

Menghan Zhou

Shenling Yu

Yue Liu

Shihui Shu

Ying Xu

Min Liu

Yanping Ge

Hong Fan

Affiliations

Soon will be listed here.

Abstract

Background: Histone methylations are generally considered to play an important role in multiple cancers by regulating cancer-related genes.

Aims: This study aims to investigate the effects of H3K27me3-mediated inactivation of tumor suppressor gene SFRP1 and its function in esophageal squamous cell carcinoma (ESCC).

Methods: We performed ChIP-seq on H3K27me3-enriched genomic DNA fragments in ESCC cells to screen out tumor suppressor genes that may be regulated by H3K27me3. ChIP-qPCR and Western blot were employed to explore the regulating mechanisms between H3K27me3 and SFRP1. Expression level of SFRP1 was assessed by quantitative real-time polymerase chain reaction (q-PCR) in 29 pairs of ESCC surgical samples. SFRP1 function in ESCC cells were detected by cell proliferation assay, colony formation assay and wound-healing assay.

Results: Our results indicated that H3K27me3 was widely distributed in the genome of ESCC cells. Specifically, we found that H3K27me3 deposited on the upstream region of SFRP1 promoter and inactivated SFRP1 expression. Furthermore, we found SFRP1 was significantly down-regulated in ESCC tissues compared with the adjacent non-tumor tissues, and SFRP1 expression was significantly associated with TNM stage and lymph node metastasis. In vitro cell-based assay indicated that over-expression of SFRP1 significantly suppressed cell proliferation and negatively correlated with the expression of β-catenin in the nucleus.

Conclusions: Our study revealed a previously unrecognized finding that H3K27me3-mediated SFRP1 inhibit the cell proliferation of ESCC through inactivation of Wnt/β-catenin signaling pathway.

Citing Articles

Targeting polycomb repressor complex 2-mediated bivalent promoter epigenetic silencing of secreted frizzled-related protein 1 inhibits cholangiocarcinoma progression.

Wu G, Wang Q, Wang D, Xiong F, Liu W, Chen J Clin Transl Med. 2023; 13(12):e1502.

PMID: 38050190 PMC: 10696163. DOI: 10.1002/ctm2.1502.

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