👉 "MiR-21" is a gene that plays a role in regulating the expression of miRNAs, which are small non-coding RNAs. Specifically, it encodes a protein called miR21, which functions as a negative regulator of miRNA expression by binding to a target mRNA and preventing its translation into a mature protein. MiR-21 is involved in various cellular processes, including regulating gene expression in cancer cells, promoting cell survival, and maintaining the integrity of