MicroRNA 19b-2 (miR-19b-2)

MicroRNA 19b-2 (miR-19b-2) is a highly conserved non-coding RNA gene that post-transcriptionally regulates target genes, influencing cellular proliferation and differentiation. It is critical in regulating neural progenitor maintenance and neuronal subtype specification, acting primarily by suppressing cell-cycle exit and differentiation through the repression of transcription factors such as E2f8 and NeuroD1[1][2]. miR-19b-2 is recognized as an oncogenic microRNA, with strong associations to cancer biology (particularly breast cancer and T-cell acute lymphoblastic leukemia), and has diagnostic utility as a blood biomarker for breast cancer[5][4]. Its role is evolutionarily conserved across vertebrates, controlling the balance between proliferation and differentiation during brain development[1][2]. Therapeutically, modulation of miR-19b-2 presents opportunities and risks due to its fundamental roles in cell-cycle and neurogenesis.

Other names

MIR19B2hsa-mir-19b-2MIRN19B2miR-19b-2

Drugs or experimental agents that inhibit miR-19b-2 would relieve its repression of genes like E2f8, NeuroD1, Fezf2, Mef2c[1][2]