MicroRNA-199a messenger RNA targets (miR-199a targets)

MicroRNA-199a (miR-199a) is a key post-transcriptional regulator that modulates a wide array of messenger RNA (mRNA) targets involved in cell proliferation, survival, and tissue repair. The term "Other miR-199a mRNA targets" refers to the broad set of genes regulated by the mature miR-199a-3p and miR-199a-5p strands, which are often dysregulated in various pathologies. Significant validated targets include the MET proto-oncogene and the mammalian target of rapamycin (mTOR), both of which are critical for tumor growth and are suppressed by miR-199a in cancers such as hepatocellular carcinoma (Fornari et al., 2010). In the context of cardiovascular disease, miR-199a-3p targets homeodomain-interacting protein kinase 2 (HIPK2) and other inhibitors of the cell cycle, thereby promoting cardiomyocyte proliferation and cardiac regeneration (Eulalio et al., 2012). However, the therapeutic application of miR-199a mimics is complicated by the miRNA's pleiotropic effects, as seen in large animal studies where it induced lethal arrhythmias despite successful heart repair (Gabisonia et al., 2019). Consequently, these mRNA targets represent a complex network that must be carefully balanced for therapeutic efficacy and safety.

Other names

miR-199a-3p targetsmiR-199a-5p targetsMIR199A targetsmiR-199a downstream effectors

MicroRNA-mediated gene silencing where the miRNA binds to the 3' untranslated region (UTR) of target mRNAs, leading to translational repression or mRNA degradation (Bartel, 2009).