ArticleThe Journal of pharmacology and experimental therapeutics2011
Regulation of transforming growth factor-β1-dependent integrin β6 expression by p38 mitogen-activated protein kinase in bile duct epithelial cells.
Article in The Journal of pharmacology and experimental therapeutics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
12 citing papers in PubMed, 24 citations in OpenAlex.
- Contribution of p38 MAPK in liver fibrosis: An overview of mechanisms, signaling pathways, and therapeutic targets (Review).International journal of molecular medicine · 2026Review
- Integrin Alpha v Beta 6 (αvβ6) and Its Implications in Cancer Treatment.International journal of molecular sciences · 2022Review
- Modulation of αExperimental & molecular medicine · 2021Article
- Review
- Identification of integrin β6 gene promoter and analysis of its transcription regulation in colon cancer cells.World journal of gastrointestinal oncology · 2020Article
- ETS2 promotes epithelial-to-mesenchymal transition in renal fibrosis by targeting JUNB transcription.Laboratory investigation; a journal of technical methods and pathology · 2020Article
- The clinical significance and underlying correlation of pStat-3 and integrin αvβ6 expression in gallbladder cancer.Oncotarget · 2017Article
- From the Cover: Coagulation-Driven Hepatic Fibrosis Requires Protease Activated Receptor-1 (PAR-1) in a Mouse Model of TCDD-Elicited Steatohepatitis.Toxicological sciences : an official journal of the Society of Toxicology · 2016Article
- Article
- Connective tissue growth factor causes EMT-like cell fate changes in vivo and in vitro.Journal of cell science · 2013Article
- Lipopolysaccharide enhances transforming growth factor β1-induced platelet-derived growth factor-B expression in bile duct epithelial cells.Journal of gastroenterology and hepatology · 2012Article
- Autocrine regulation of biliary pathology by activated cholangiocytes.American journal of physiology. Gastrointestinal and liver physiology · 2012Review
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
Bile duct epithelial cells (BDECs) contribute to liver fibrosis by expressing αVβ6 integrin, a critical activator of latent transforming growth factor β (TGF-β). β6 integrin (Itgβ6) mRNA induction and αVβ6 integrin expression in BDECs are partially TGF-β-dependent. However, the signaling pathways required for TGF-β-dependent Itgβ6 mRNA induction in BDECs are not known. We tested the hypothesis that the p38 mitogen-activated protein kinase (MAPK) signaling pathway contributes to TGF-β1 induction of Itgβ6 mRNA by activating SMAD and activator protein 1 (AP-1) transcription factors. Pretreatment of transformed human BDECs (MMNK-1 cells) with two different p38 MAPK inhibitors, but not a control compound, inhibited TGF-β1 induction of Itgβ6 mRNA. Inhibition of p38 also reduced TGF-β1 activation of a SMAD-dependent reporter construct. Expression of a dominant-negative SMAD3 (SMAD3ΔC) significantly reduced TGF-β1-induced Itgβ6 mRNA expression. Expression of JunB mRNA, but not other AP-1 proteins, increased in TGF-β1-treated MMNK-1 cells, and induction of JunB expression was p38-dependent. Consistent with a requirement for de novo induction of JunB protein, cycloheximide pretreatment inhibited TGF-β1 induction of Itgβ6 mRNA. Expression of a dominant-negative AP-1 mutant (TAM67) also inhibited TGF-β1 induction of Itgβ6 mRNA. Overall, the results suggest that p38 contributes to TGF-β1-induced Itgβ6 mRNA expression in MMNK-1 cells by regulating activation of both SMAD and AP-1 transcription factors.
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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.