microRNA 615 (MIR615)

microRNA 615 (MIR615) is a highly conserved, small non-coding RNA encoded in the HOXC gene cluster, expressed from two mature strands (miR-615-5p and miR-615-3p)[1][3][4]. It regulates gene expression post-transcriptionally by binding to the 3’ untranslated region (3’-UTR) of target mRNAs, resulting in translational inhibition or mRNA destabilization[4]. miR-615 is involved in diverse physiological processes—including growth, development, differentiation (especially osteogenesis and neural differentiation), and angiogenesis—as well as pathological contexts such as cancer, vascular disease, and neurodegeneration[1][4][5][6]. Its dual roles as both tumor suppressor and tumor promoter are highly cell-type and disease-specific, creating significant interest as a biomarker and a potential therapeutic target. Regulation of miR-615 involves multiple layers, including transcription factors, epigenetic modification, and sequestration by long non-coding and circular RNAs[4]. Current therapeutic research focuses on modulating miR-615 expression or function via mimics, inhibitors, or agents that target its upstream regulators, with significant potential but notable safety and specificity challenges.

Other names

hsa-mir-615MIRN615mir-615MIR615miR-615-3pmiR-615-5p

Drugs or experimental agents targeting miR-615 would generally act via: miRNA mimicry (restoring tumor suppressor function), Antisense inhibition (silencing oncogenic mature miR-615), or Epigenetic modulation (targeting upstream promoters, sponges such as lncRNAs or circRNAs).