ArticleJournal of cellular and molecular medicine2024
O-GlcNAc regulates anti-fibrotic genes in lung fibroblasts through EZH2.
Article in Journal of cellular and molecular medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 9 citations in OpenAlex.
- MMT: A Potential Mechanism of Myocardial Fibrosis - Regulation of the TGF-β1/Smad3 Pathway and Prospects for Targeted Therapy.Reviews in cardiovascular medicine · 2026Review
- Article
- O-GlcNAcylation promotes angiogenic transdifferentiation to reverse vascular ischemia.Nature cardiovascular research · 2025Article
- Enzymatic post-translational modifications of proteins in chronic kidney disease: mechanisms, regulation, and clinical significance.Frontiers in pharmacology · 2025Review
- O-GlcNAc regulates anti-fibrotic genes in lung fibroblasts through EZH2.Journal of cellular and molecular medicine · 2024Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
Abstract
Epigenetic modifications are involved in fibrotic diseases, such as idiopathic pulmonary fibrosis (IPF), and contribute to the silencing of anti-fibrotic genes. H3K27me3, a key repressive histone mark, is catalysed by the methyltransferase enhancer of Zeste homologue 2 (EZH2), which is regulated by the post-translational modification, O-linked N-Acetylglucosamine (O-GlcNAc). In this study, we explored the effects of O-GlcNAc and EZH2 on the expression of antifibrotic genes, cyclooxygenase-2 (Cox2) and Heme Oxygenase (Homx1). The expression of Cox2 and Hmox1 was examined in primary IPF or non-IPF lung fibroblasts with or without EZH2 inhibitor EZP6438, O-GlcNAc transferase (OGT) inhibitor (OSMI-1) or O-GlcNAcase (OGA) inhibitor (thiamet G). Non-IPF cells were also subjected to TGF-β1 with or without OGT inhibition. The reduced expression of Cox2 and Hmox1 in IPF lung fibroblasts is restored by OGT inhibition. In non-IPF fibroblasts, TGF-β1 treatment reduces Cox2 and Hmox1 expression, which was restored by OGT inhibition. ChIP assays demonstrated that the association of H3K27me3 is reduced at the Cox2 and Hmox1 promoter regions following OGT or EZH2 inhibition. EZH2 levels and stability were decreased by reducing O-GlcNAc. Our study provided a novel mechanism of O-GlcNAc modification in regulating anti-fibrotic genes in lung fibroblasts and in the pathogenesis of IPF.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.