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  • Title: Circular RNA circMTO1 suppressed the progression of renal cell carcinoma progression by sponging miR-211 and miR-204.
    Author: Wang K, Lin X.
    Journal: Mamm Genome; 2022 Sep; 33(3):517-524. PubMed ID: 35092479.
    Abstract:
    Despite considerable improvements in renal cell carcinoma (RCC) diagnostic and therapeutic strategy, the clinical prognosis of patients is far from satisfactory due to its recurrence and metastasis. Here, we attempted to explore the role of circMTO1 in RCC progression, and the underlying mechanism was further elucidated. We first detected the expression of circMTO1 in 90 pairs of RCC tissues and adjacent normal tissues using qRT-PCR. Besides, circMTO1, miR-211, miR-204 and KLF6 expression levels in RCC cells were also measured using qRT-PCR. MTT assay, cell migration, flow cytometry analysis, qRT-PCR and western blotting analysis were applied to evaluating the effect of circMTO1 in RCC cells. The bioinformatics analysis and the rescue experiment were devoted to the underlying mechanism. The results demonstrated CircMTO1 expression was significantly down-regulated in RCC tissues and cell lines. Besides, CircMTO1 inhibited cell proliferation, migration and invasion, induced apoptosis in RCC cells. In addition, CircMTO1 serves as a sponge for miR-211 and miR-204, KLF6 is a direct target of miR-211 and miR-204. Furthermore, circMTO1 and KLF6 overexpression rescued the suppression of miR-211/204 in RCC cell proliferation. In short, circMTO1 repressed RCC progression by regulating KLF6 via sponging miR-211 and miR-204, which may provide new idea of diagnosis and treatment in renal cell carcinoma.
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