MiR-7-5p suppresses invasion via downregulation of the autophagy-related gene ATG7 and increases chemoresistance to cisplatin in BCa

Bioengineered

Yawei Li¹  Zhao Tang²  Tiantian Liu²  Ze Zhang²  Chong Wang²  Jingwei Zhang²  Houbao Huang² 

[1] ;Department of Urology, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui, China;

关键词: MiRNA-7-5p;    autophagy;    ATG7;    BCa;    chemoresistance;   

DOI  :  10.1080/21655979.2022.2037323

来源: DOAJ

【 摘 要 】

Bladder cancer (BCa) is one of the most common cancers in men and is a major threat to the lives and health of older men. Many studies have shown that miR-7, as an important tumor suppressor gene, could directly inhibit some pathways involved in the development of cancer. MiR-7-5p, which was assessed in this study, consists of one arm of miR-7 and acts as a cancer suppressor gene in multiple cancer types. Autophagy, as a common biological process, plays dual roles in the process of cancer. Chemotherapy resistance is a problem in the treatment of BCa. In this study, the data showed that miR-7-5p was obviously down-regulated in BCa tissues and cells compared to their respective controls. In addition, miR-7-5p mimic effectively inhibited migration, invasion and autophagy both in vitro and in vivo. In the mechanistic study, miR-7-5p targeted autophagy-related gene ATG7 to inhibit its expression, which in turn inhibited autophagy. Finally, the migration of BCa cells was inhibited, and chemosensitivity was improved. Overall, our results provide evidence of the role of miR-7-5p as a cancer suppressor gene in BCa and provide new opportunities for the treatment of BCa.

【 授权许可】

Unknown