Suppression of ELF4 in ulcerative colitis predisposes host to colorectal cancer

Hongqiang Du, Huawei Xia, Tongtong Liu, Yingjie Li, Jilong Liu, Bingteng Xie, Jingxuan Chen, Tong Liu, Lili Cao, Shengde Liu, Siji Li, Peiyan Wang, Dandan Wang, Zeming Zhang, Yunfei Li, Xiaohuan Guo, Aiwen Wu*, Mo Li*, Fuping You*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Ulcerative colitis (UC) is a chronic inflammatory bowel disease, characterized by relapsing and remitting colon mucosal inflammation. For patients suffering from UC, a higher risk of colon cancer has been widely recognized. Here, we found that Elf4−/− mice developed colon tumors with 3 cycles of dextran sulfate sodium salt (DSS) treatment alone. We further showed that ELF4 suppression was prevalent in both patients with UC and DSS-induced mice models, and this suppression was caused by promoter region methylation. ELF4, upon PARylation by PARP1, transcriptionally regulated multiple DNA damage repair machinery components. Consistently, ELF4 deficiency leads to more severe DNA damage both in vitro and in vivo. Oral administration of montmorillonite powder can prevent the reduction of ELF4 in DSS-induced colitis models and lower the risk of colon tumor development during azoxymethane (AOM) and DSS induced colitis-associated cancer (CAC). These data provided additional mechanism of CAC initiation and supported the “epigenetic priming model of tumor initiation”.

Original languageEnglish
Article number102169
JournaliScience
Volume24
Issue number3
DOIs
Publication statusPublished - 19 Mar 2021
Externally publishedYes

Keywords

  • Biochemistry
  • Molecular Biology
  • Transcriptomics

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