Cited by 73Liver physiology and pathologyTGF-β signaling in diseasesLiver Disease Diagnosis and Treatment

A Positive Feedback Loop of TET3 and TGF-β1 Promotes Liver Fibrosis

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Xu, Yetao, Sun, Xiaoli, Zhang, Ruling, Cao, Tiefeng, Cai, Shi-Ying, Boyer, James L., Zhang, Xuchen, Li, Da +1 more·2020·Cell Reports

Abstract

Pathological activation of TGF-β signaling is universal in fibrosis. Aberrant TGF-β signaling in conjunction with transdifferentiation of hepatic stellate cells (HSCs) into fibrogenic myofibroblasts plays a central role in liver fibrosis. Here we report that the DNA demethylase TET3 is anomalously upregulated in fibrotic livers in both humans and mice. We demonstrate that in human HSCs, TET3 promotes profibrotic gene expression by upregulation of multiple key TGF-β pathway genes, including TGFB1. TET3 binds to target gene promoters, inducing demethylation, which in turn facilitates chromatin remodeling and transcription. We also reveal a positive feedback loop between TGF-β1 and TET3 in both HSCs and hepatocytes. Furthermore, TET3 knockdown ameliorates liver fibrosis in mice. Our results uncover a TET3/TGF-β1 positive feedback loop as a crucial determinant of liver fibrosis and suggest that inhibiting TET3 may represent a therapeutic strategy for liver fibrosis and perhaps other fibrotic diseases.

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Crossref · 10.1016/j.celrep.2019.12.092

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  • Other epigenetic regulators, including MECP2, EZH1/2, BRD4, SIRT1, KDM4D, and TET3, can contribute to chemically induced liver fibrosis.

    “Other epigenetic regulators, such as methyl CpG binding protein 2 (MECP2), enhancer of zeste homolog 1/2 (EZH1/2), bromodomain-containing protein 4 (BRD4), Sirtuin 1 (SIRT1), lysine-specific demethylase 4D (KDM4D), and tet methylcytosine dioxygenase 3 (TET3), can contribute to chemically-induced liver fibrosis (174-178) (179, 180) (181).”

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Authors
Xu, Y., Sun, X., Zhang, R., Cao, T., Cai, S.-Y., Boyer, J. L., Zhang, X., Li, D., & Huang, Y.
Affiliations
  • Yale University (US)
  • Nantong University (CN)
  • Shanghai Jiao Tong University (CN)
  • Sheng Jing Hospital (CN)
Corresponding author
  • Li, Da
  • Huang, Yingqun
Venue
Cell Reports
Publisher
Elsevier BV
Published
2020-02
Volume
30
Issue
5
Pages
1310-1318.e5
ISSN
2211-1247 (ISSN-L)
OpenAlex
W3005492466
Cited by
73
References
32
Citations by year
2026: 4 · 2025: 10 · 2024: 7 · 2023: 17 · 2022: 16 · 2021: 13 · 2020: 5
FWCI
7.50
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases
Topics
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
Keywords
TET3, TGF-β1, liver fibrosis, hepatic stellate cells, DNA demethylation, positive feedback loop, chromatin remodeling, transcriptional regulation, myofibroblast transdifferentiation, hepatocytes
MeSH terms
Adult, Animals, Base Sequence, Cell Line, Female, Humans, Liver Cirrhosis, Male, Mice, Inbred C57BL, Middle Aged, Signal Transduction, Up-Regulation, Hepatocytes, Feedback, Physiological, Epigenesis, Genetic, Dioxygenases, Transforming Growth Factor beta1, Hepatic Stellate Cells

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