LncRNA PLAC2 Positively Regulates CDK2 to Promote Ovarian Carcinoma Cell Proliferation.

Background: PLAC2 has been reported to participate in glioma, but its role in ovarian carcinoma (OC) is unclear. This study investigated the role of lncRNA PLAC2 in OC. Methods: A 5-year follow-up study of 64 patients was carried out in Weihai Municipal Hospital after the admission of patients. A total of 64 OC patients were selected from 178 OC patients admitted in the aforementioned hospital from August 2011 to January 2014. Cell transfections, cell cycle analysis, cell proliferation assay and Western blot were carried out during the research. Results: The expression levels of PLAC2 and CDK2 were both upregulated in OC and they were positively correlated. During the 5-year follow-up, patients with high levels of PLAC2 and CDK2 showed significantly lower overall survival rate. In OC cells, overexpression of PLAC2 resulted in upregulated, while silencing of PLAC2 resulted in downregulated expression of CDK2. Cell proliferation assay showed that overexpression of PLAC2 resulted in increased, while silencing of PLAC2 resulted in decreased proliferation rate of OC cells. In addition, overexpression of CDK2 attenuated the effects of silencing of PLAC2. Conclusion: PLAC2 positively regulates CDK2 to promote OC cell proliferation.