ArticleMolecular genetics and genomics : MGG2024
High expression of ADAR mediated by OGT promotes chemoresistance in colorectal cancer through the A-to-I editing pathway.
Article in Molecular genetics and genomics : MGG, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- O-GlcNAcylation at the tumor-immune interface: a metabolic post-translational code driving immune evasion and therapy resistance in cancer.Frontiers in immunology · 2026Review
- Gastrointestinal cancer: molecular pathogenesis and targeted therapy.Molecular biomedicine · 2025Review
- ADAR1 as a prognostic marker for patients with colorectal cancer and synchronous liver metastasis and a predictor of chemotherapy efficacy.Scientific reports · 2025Article
- Deciphering the mechanistic roles of ADARs in cancer pathogenesis, tumor immune evasion, and drug resistance.Frontiers in immunology · 2025Review
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Authors and funding
6 authors.
Funding
Abstract
Colorectal cancer (CRC) is a malignant tumor with poor prognosis and adverse therapeutic effect. The study aims to elucidate the contribution of OGT-mediated glycosylation of ADAR to chemoresistance in CRC through its role and regulatory mechanisms. Variations in OGT expression levels and their impact on CRC cell chemoresistance were investigated using gain-of-function and loss-of-function assays. Through a series of molecular biology experiments, we confirmed that ADAR is the downstream target of OGT regulation, emphasizing the role of OGT-mediated glycosylation in stabilizing ADAR. Furthermore, RNA immunoprecipitation (RIP) assays were conducted to examine the effects of ADAR-mediated A-to-I editing on the mRNA stability and translation of genes associated with DNA damage repair. Elevated OGT expression was found to enhance CRC's malignancy and resistance to chemotherapy. OGT's influence leads to the glycosylation of ADAR, thereby increasing its protein levels. ADAR, through its role in A-to-I editing, modulates the mRNA editing of genes implicated in DNA damage repair. This regulation enhances the expression of these genes, improves DNA repair capabilities, and ultimately, fosters chemoresistance in CRC cells. In conclusion, ADAR promotes PARP1 expression under the positive regulation of OGT-mediated O-glycosylation modification to enhance drug resistance in COAD cells. It provides the research basis for overcoming the drug resistance of CRC.
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Registered trials
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