ABSTRACT
BACKGROUND: With the promotion of human papillomavirus (HPV) vaccine, cervical cancer has become a current research hotspot, and lncRNA has been confirmed to be used in the research of different diseases. This article systematically expounds the regulation and potential mechanisms of HOXA cluster antisense RNA 3 (HOXA-AS3) in cervical cancer, and discusses its possibility as a prognostic biomarker for cervical cancer. METHODS: Relative expression levels of HOXA-AS3 and miR-29a-3p in tissues and cells were determined by real-time quantitative polymerase chain reaction (RT-qPCR). The survival of cervical cancer patients was analyzed by Kaplan-Meier method and the cumulative survival function table was drawn. The proliferation, migration, and invasion levels of HOXA-AS3 in cells were detected according to cell counting kit-8 (CCK-8) and transwell method. The dual-luciferase reporter gene assay confirmed the mechanism of action between HOXA-AS3 and miR-29a-3p. RESULTS: HOXA-AS3 was elevated and miR-29a-3p was decreased in tissues and cells of cervical cancer patients. Knockdown of HOXA-AS3 could inhibit the progression of cervical cancer and was more conducive to patient survival. Bioinformatics analysis confirmed that HOXA-AS3 negatively regulates cervical cancer development by sponging miR-29a-3p. CONCLUSION: In this research, knockdown of HOXA-AS3 could alleviate the process of cervical cancer by sponging miR-29a-3p, suggesting that HOXA-AS3 may be a potential prognostic target of cervical cancer, which could provide a theoretical basis for future clinical research of cervical cancer.
Subject(s)
MicroRNAs , RNA, Long Noncoding , Uterine Cervical Neoplasms , Biomarkers , Cell Line, Tumor , Cell Movement/genetics , Cell Proliferation/genetics , Female , Gene Expression Regulation, Neoplastic , Humans , MicroRNAs/genetics , MicroRNAs/metabolism , Prognosis , RNA, Long Noncoding/genetics , Uterine Cervical Neoplasms/geneticsABSTRACT
It has been well investigated that circular RNAs (circRNAs) play important roles in various cancers. The function of circ_0002711 and its underlying mechanisms in ovarian cancer (OC) remain unknown. qRT-PCR and western blot were performed to detect the expressions of circ_0002711, microRNA-1244 (miR-1244), and Rho kinase 1 (ROCK1) in OC tissues and cells. MTT assay and colony formation assay were employed to evaluate cell proliferation. Detection of lactate production, glucose uptake, and ATP level and oxygen consumption were used to determine Warburg effect. Western blot was used to examine glycolysis or proliferationrelated genes. Dual-luciferase reporter assay and RIP pull down assay were used to address the relationship among circ_0002711, miR-1244, and ROCK1. In vivo tumor growth was evaluated in nude mice. Circ_0002711 was upregulated in OC tissues and cell lines. Circ_0002711 downregulation inhibited cell viability, colony formation ability and aerobic glycolysis. Circ_0002711 contained binding sites with miR1244. Moreover, loss of miR-1244 undermined circ_0002711 downregulation-mediated function. ROCK1 contained binding sites with miR-1244. MiR-1244 upregulation suppressed cell proliferation and aerobic glycolysis, which was rescued by enhanced expression of ROCK1. Circ_0002711 knockdown hampered ROCK1 expression by upregulating miR-1244 expression. Finally, decreased expression of circ_0002711 inhibited tumor growth in vivo. Circ_0002711/miR-1244/ROCK1 axis regulated Warburg effect and tumor growth in vivo.
