ArticleImmune network2014
SUMO Proteins are not Involved in TGF-β1-induced, Smad3/4-mediated Germline α Transcription, but PIASy Suppresses it in CH12F3-2A B Cells.
Article in Immune network, 2014. 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, 4 citations in OpenAlex.
- Mechanisms and functions of SUMOylation in health and disease: a review focusing on immune cells.Journal of biomedical science · 2024Review
- Natural Products Against Renal FibrosisFrontiers in pharmacology · 2022Review
- Aryl hydrocarbon receptor-induced activation of the human IGH hs1.2 enhancer: Mutational analysis of putative regulatory binding motifs.Molecular immunology · 2020Article
- Progress of small ubiquitin-related modifiers in kidney diseases.Chinese medical journal · 2019Review
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
TGF-β induces IgA class switching by B cells. We previously reported that Smad3 and Smad4, pivotal TGF-β signal-transducing transcription factors, mediate germline (GL) α transcription induced by TGF-β1, resulting in IgA switching by mouse B cells. Post-translational sumoylation of Smad3 and Smad4 regulates TGF-β-induced transcriptional activation in certain cell types. In the present study, we investigated the effect of sumoylation on TGF-β1-induced, Smad3/4-mediated GLα transcription and IgA switching by mouse B cell line, CH12F3-2A. Overexpression of small ubiquitin-like modifier (SUMO)-1, SUMO-2 or SUMO-3 did not affect TGF-β1-induced, Smad3/4-mediated GLα promoter activity, expression of endogenous GLα transcripts, surface IgA expression, and IgA production. Next, we tested the effect of the E3 ligase PIASy on TGF-β1-induced, Smad3/4-mediated GLα promoter activity. We found that PIASy overexpression suppresses the GLα promoter activity in cooperation with histone deacetylase 1. Taken together, these results suggest that SUMO itself does not affect regulation of GLα transcription and IgA switching induced by TGF-β1/Smad3/4, while PIASy acts as a repressor.
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