Abstract
This work examined microRNA-1290 (miR-1290)'s effect on regulating the malignant phenotype of prostate cancer (PC) cells. We detected miR-1290 expression within PC based on open-sourced datasets as well as in cancer cells and tissues. Loss-of-function experiments by miR-1290 knockdown in PC cell lines were performed. We performed CCK-8, clone forming, Transwell, and sphere formation assays for examining PC cells' malignant phenotypes following miR-1290 knockdown. We estimated miR-1290's target genes using online resources including miRDB, miRbase, miRTarBase and TargetScan. We also performed in vivo studies for validating how miR-1290 affected tumour formation within the mouse model. According to findings in this work, miR-1290 showed overexpression within PC cells and tissues. miR-1290 was indispensable for PC cell growth, stemness and invasion as well as mesenchymal status. Further, we identified RORA (retinoic acid receptor-related orphan receptor A) as miR-1290's target gene for mediating miR-1290 within PC cells. To sum up, this work suggests that miR-1290 up-regulation enhances PC cell growth and invasion by regulating RORA expression.
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