Li Jin, Chunyan Zeng, Yuxiang Chen
Colorectal cancer (CRC) has one of the highest incidences and mortality rates of all malignancies worldwide. microRNAs (miRNAs) have been reported to be involved in many biological processes of diseases. MiR-22-3p is considered to be involved in cancer progression, but its role in CRC remains unclear. In this study, we detected that in CRC, the level of miR-22-3p is downregulated. MiR-22-3p has antitumor effects in CRC. miR-22-3p can reduce the proliferative, invasive and migrative capacity of CRC cells. Luciferase reporter analyses confirmed that KDM3A was a target of miR-22-3p, which can directly target the 3’UTR of KDM3A and decrease the expression of KDM3A in CRC cells. Our study also confirmed that KDM3A plays a role as an oncogene in CRC. KDM3A overexpression attenuated the tumor suppressor effects of miR-22-3p in CRC cells, demonstrating that miR-22-3p exerts antitumor effects by targeting KDM3A. Overexpression of miR-22-3p in CRC reduced YAP1 expression, whereas overexpression of KDM3A restored the expression of YAP1. In summary, miR-22-3p might inhibit the progression of CRC by targeting KDM3A to regulate the HIPPO signaling pathway, which may provide an opportunity for the treatment of CRC.
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