MicroRNA-497-5p Induces Cell Cycle Arrest Of Cervical Cancer Cells In S Phase By Targeting CBX4.

Abstract:

Purpose:miR-497-5p can inhibit cervical cancer cell proliferation. However, the underlying mechanism remains to be elucidated. Methods:Bioinformatics was used to analyze the target genes of miR-497-5p. qRT-PCR and Western blot were used to analyze mRNA and protein expression, respectively. Dual-luciferase reporter assay was used to analyze the direct binding between miR-497-5p and 3'-untranslated region of CBX4. Cell viability was measured with MTT assay. Flow cytometry was performed to detect cell cycle distribution. Results:Here, using bioinformatics methods we firstly found that miR-497-5p regulated cervical carcinoma proliferation by targeting polycomb chromobox4 (CBX4). Expression of miR-497-5p in cervical carcinoma tissues was negatively correlated with CBX4. A binding region of miR-497-5p in 3'-untranslated region of CBX4 was predicted. Further experiments confirmed that miR-497-5p directly targeted CBX4. Besides, RNA interference of CBX4 inhibited cervical cancer cell proliferation, arrested cells at S phase and reduced the expression of CDK2 and Cyclin A2 proteins. The use of miR-497-5p inhibitor compromised CBX4 interference RNAs induced cycle arrest of cervical cancer cells. Cells co-transfected with miR-497-5p inhibitors and CBX4 interference RNAs had a higher proliferation rate than CBX4 inference RNA-transfected cells. Conclusion:All together, the present study demonstrates that miR-497-5p inhibits cervical cancer cells proliferation by directly targeting CBX4.

journal_name

Onco Targets Ther

journal_title

OncoTargets and therapy

authors

Chen Y,Du J,Wang Y,Shi H,Jiang Q,Wang Y,Zhang H,Wei Y,Xue W,Pu Z,Gao Y,Li D,Feng Y,Yan J,Zhang J

doi

10.2147/OTT.S210059

subject

Has Abstract

pub_date

2019-12-02 00:00:00

pages

10535-10545

issn

1178-6930

pii

210059

journal_volume

12

pub_type

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