Circular RNA EGLN3 silencing represses renal cell carcinoma progression through the miR-1224-3p/HMGXB3 axis

xlomafota13 shared this article with you from Inoreader Circular RNA EGLN3 silencing represses renal cell carcinoma progression through the miR-1224-3p/HMGXB3 axis Via histochem Acta Histochem. 2021 Jul 15;123(6):151752. doi: 10.1016/j.acthis.2021.151752. Online ahead of print. ABSTRACT BACKGROUND: Renal cell carcinoma (RCC) is a common tumor of the urinary system, and its global incidence is increasing annually. Circular RNAs (circRNAs) are involved in RCC tumorigenesis; however, the role of circ-EGLN3 (hsa_circ_0031594) derived from the Egl nine homolog 3 (EGLN3) gene in RCC remains undetermined. METHODS: Circ-EGNL3 expression was examined b efore and after RNase R and actinomycin treatments in RCC cells and tissues. Cell proliferation, migration, and invasion were assessed using the CCK-8 assay, EdU staining, and wound-healing and Transwell assays. The interactions between microRNA (miR)-1224-3p and circ-EGLN3, and between miR-1224-3p and HMG box domain containing 3 (HMGXB3) were predicted by bioinformatics analysis and validated by dual-luciferase reporter assay. RESULTS: Circ-EGLN3 was identified using RNase R and actinomycin treatments. Circ-EGLN3 was upregulated in RCC cells and tissues and correlated with poor overall survival. Silencing of circ-EGNL3 decreased RCC cell proliferation, migration, and invasion. Mechanistic studies indicated that circ-EGNL3 acts as a sponge for miR-1224-3p, which targeted HMGXB3. Circ-EGNL3 indirectly upregulated HMGXB3 by targeting miR-1224-3p, and overexpression of circ-EGLN3 reversed the repressive effects of miR-1224-3p on RCC. CONCLUSION: Circ-EGLN3 regulated RCC pro gression through the miR-1224-3p/HMGXB3 axis, suggesting its potential as a therapeutic target. PMID:34274607 | DOI:10.1016/j.acthis.2021.151752 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.