CircHIPK3 regulates melanoma cell behaviors by binding with miR-215-5p to upregulate YY1.

Abstract:

OBJECT:To investigate the role of circHIPK3 in melanoma. METHODS:Bioinformatics analysis and experiments including RT-qPCR, Pearson's correlation analysis, luciferase reporter, Western blot, and RIP assays were applied to explore the function and mechanism of circHIPK3 in melanoma. RESULTS:CircHIPK3 expression was strikingly upregulated while miR-215-5p was downregulated in melanoma tissues and cell lines. Pearson's correlation analysis unveiled circHIPK3 expression was positively correlated with Ki-67 (a marker of proliferation), which implied that circHIPK3 may play a vital role in the progression of melanoma. In mechanism, luciferase reporter and RIP assays validated that circHIPK3 was able to bind with miR-215-5p. Moreover, we confirmed that overexpression of circHIPK3 could facilitate cell proliferation and depress cell apoptosis in melanoma while overexpression of miR-215-5p exerted opposite effects. Besides, our findings indicated that miR-215-5p overexpression significantly reversed the circHIPK3 overexpressing-mediated promotive effect on cell proliferation and inhibitory effect on cell apoptosis. Furthermore, we found that miR-215-5p could directly target YY1. Upregulation of YY1 could notably offset the inhibitory effect of circHIPK3 downregulation on cell proliferation and the promotive effect on cell apoptosis. CONCLUSION:Our study corroborated that circHIPK3 regulated melanoma cell behaviors via the miR-215-5p/YY1 axis, which might provide a novel insight for the treatment of melanoma patients.

journal_name

Mol Cell Probes

authors

Zhu X,Sun J

doi

10.1016/j.mcp.2020.101644

subject

Has Abstract

pub_date

2020-10-01 00:00:00

pages

101644

eissn

0890-8508

issn

1096-1194

pii

S0890-8508(20)30199-7

journal_volume

53

pub_type

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