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  • Title: TRIM37 promotes the aggressiveness of ovarian cancer cells and increases c-Myc expression by binding to HUWE1.
    Author: Li D, Zhang Z.
    Journal: Arch Biochem Biophys; 2022 Oct 15; 728():109372. PubMed ID: 35921902.
    Abstract:
    Tripartite motif containing 37 (TRIM37) was reported to function as a tumor promoter in the development of various cancers. However, the biological role of TRIM37 in ovarian cancer (OC) was still unclear. Expressions of TRIM37 and HUWE1 were detected by qRT-PCR and western blotting in OC cells. Cell proliferation was evaluated by CCK-8 assay and colony formation assay. Cell migration and invasion capabilities were examined by wound healing and transwell assay. Flow cytometry and western blotting were performed to measure cell apoptosis. Wnt/β-catenin pathway and the expression of c-Myc were identified by qRT-PCR and western blotting. The binding of TRIM37 and HUWE1 was predicted by STRING database and verified by co-immunoprecipitation. In addition, a xenograft mouse model was established to evaluate the effects of TRIM37 and HUWE1 on tumor growth and c-MYC expression in vivo. The present study revealed that TRIM37 expression was upregulated in OC tissues and cells. TRIM37 silencing inhibited OC cell migration and invasion, promoted OC cell apoptosis, and blocked Wnt/β-catenin signaling pathway, as well as suppressing c-MYC protein expression. Mechanistic studies suggested that TRIM37 binds to HUWE1. HUWE1 was upregulated in OC cells and TRIM37 promoted the c-MYC expression through targeting HUWE1. Animal experiments showed that TRIM37 silencing significantly repressed the tumor growth and c-MYC protein level, but HUWE1 overexpression reversed the effects of TRIM37 knockdown on mice with OC. Our findings revealed that TRIM37 accelerated the progression of OC and promoted c-MYC expression by binding to HUWE1, which provides therapeutic targets for OC treatment.
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