Abstract
The inflammatory response plays an important role in carcinogenesis. However, the functional role and mechanism of the UCHL3-associated inflammatory response in ovarian cancer remain to be characterized. Here, we report that increased expression of UCHL3 facilitates tumourigenesis by targeting TRAF2 protein, thereby enhancing the inflammatory response. The expression of UCHL3 is elevated in ovarian cancer patients and is associated with an unfavourable prognosis. Genetic ablation of UCHL3 was found to markedly block ovarian cancer cell proliferation, viability and migration both in vitro and in vivo. Mechanistically, luciferase pathway screening results show that NF-κB signalling is clearly activated compared with other pathways. UCHL3 was found to activate NF-κB signalling by deubiquitinating and stabilizing TRAF2, leading to tumourigenesis. Our results indicate that highly expressed UCHL3 enhances inflammation by stabilizing TRAF2, which in turn facilitates tumourigenesis in ovarian cancer, and that UCHL3 is a potential target for ovarian cancer patients with increased inflammation.
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Acknowledgements
This work was supported by grants from the National Natural Science Foundation of China [81602450] and the Fundamental Research Funds for the Central Universities [413000099] and Zhongnan Hospital of Wuhan University Science, Technology and Innovation Seed Fund Project [cxpy2017005] and Foundation of Hunan Educational Committee (16B161).
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Zhang, MH., Zhang, HH., Du, XH. et al. UCHL3 promotes ovarian cancer progression by stabilizing TRAF2 to activate the NF-κB pathway. Oncogene 39, 322–333 (2020). https://doi.org/10.1038/s41388-019-0987-z
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DOI: https://doi.org/10.1038/s41388-019-0987-z
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