Abstract
Triple-negative breast cancer (TNBC) is the most aggressive histological subtype of breast cancer and is characterized by poor outcomes and a lack of specific-targeted therapies. Transforming growth factor-β (TGF-β) acts as the key cytokine in the epithelial-mesenchymal transition (EMT) and the metastasis of TNBC. However, the regulatory mechanisms of the TGF-β signaling pathway remain largely unknown. In this study, we identified that the USP1/WDR48 complex could effectively enhance TGF-β-mediated EMT and migration of TNBC cells. Furthermore, lower phosphorylation of Smad2/3, Erk, Jnk, and p38 was noted on the suppression of the expression of endogenous USP1 or WDR48. Moreover, the USP1-WDR48 complex was found to downregulate the polyubiquitination of TAK1 and mediate its in vitro stability. Therefore, our findings have shed a light on the novel role of the USP1/WDR48 complex in promoting TGF-β-induced EMT and migration in TNBC via in vitro stabilization of TAK1.
Keywords:
EMT; TAK1; TGF-β; TNBC; USP1; WDR48.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Cell Line, Tumor
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Cell Movement / physiology
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Epithelial-Mesenchymal Transition / physiology*
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Female
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Humans
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Intracellular Signaling Peptides and Proteins / biosynthesis*
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Intracellular Signaling Peptides and Proteins / genetics
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MAP Kinase Kinase Kinases / biosynthesis*
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MAP Kinase Kinase Kinases / genetics
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Protein Stability
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Transforming Growth Factor beta / biosynthesis*
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Transforming Growth Factor beta / genetics
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Triple Negative Breast Neoplasms / genetics
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Triple Negative Breast Neoplasms / metabolism*
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Ubiquitin-Specific Proteases / biosynthesis*
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Ubiquitin-Specific Proteases / genetics
Substances
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Intracellular Signaling Peptides and Proteins
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Transforming Growth Factor beta
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WDR48 protein, human
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MAP Kinase Kinase Kinases
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MAP kinase kinase kinase 7
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USP1 protein, human
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Ubiquitin-Specific Proteases
Grants and funding
This work was supported by the National Natural Science Foundation of China [No. 81672613; No. 81874119; No. 82072912]; Taishan Scholar Foundation of Shandong Province [No. ts20190971].