ZEB1 promotes inflammation and progression towards inflammation-driven carcinoma through repression of the DNA repair glycosylase MPG in epithelial cells
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View abstract on PubMed
Summary
This summary is machine-generated.ZEB1 drives ulcerative colitis and inflammatory colorectal cancer by suppressing DNA repair enzyme MPG. This discovery offers new therapeutic targets for managing inflammation and cancer.
Area Of Science
- Gastroenterology
- Oncology
- Molecular Biology
Background
- Chronic inflammation is a known risk factor for colorectal cancer (CRC).
- Reactive oxygen species (ROS) from inflamed tissue cause DNA damage in epithelial cells.
- Identifying drivers of ulcerative colitis (UC) and inflammatory CRC is crucial.
Purpose Of The Study
- To identify novel drivers of ulcerative colitis (UC) and inflammatory colorectal cancer (CRC).
- To elucidate the role of ZEB1 and N-methyl-purine glycosylase (MPG) in colitis and CRC pathogenesis.
Main Methods
- Analysis of patient samples and mouse models of colitis and CRC.
- Genetic manipulation of ZEB1 and MPG in mice and cancer cells.
- Immunostaining, qRT-PCR, ChIP assays, microbiota sequencing, and ROS determination were employed.
Main Results
- ZEB1 expression was elevated in the colonic epithelium of UC and colitis models.
- Zeb1-deficient mice showed protection against colitis and reduced tumor development in CRC models.
- ZEB1 directly inhibited MPG expression, leading to increased DNA damage (8-oxo-dG) and reduced DNA repair.
Conclusions
- ZEB1 promotes colitis and inflammatory CRC by inhibiting MPG in epithelial cells.
- This mechanism highlights a potential therapeutic strategy targeting inflammation and cancer.
- Modulating ZEB1-MPG interaction could offer new avenues for treatment.
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