miR‑21 inhibits autophagy and promotes malignant development in the bladder cancer T24 cell line.

MicroRNA‑21 (miR‑21) is reported to exhibit cancer‑promoting activity in various types of cancer. It has been previously demonstrated that miR‑21 is overexpressed in bladder tumor tissue compared with normal mucosa. However, the functional mechanism of miR‑21 in bladder cancer remains largely unknown.