MicroRNA 9-1 (MIR9-1)

MicroRNA 9-1 (MIR9-1) is a non-coding RNA gene that produces miR-9, a highly conserved microRNA controlling gene expression at the post-transcriptional level by binding to target mRNAs and modulating their translation and stability[3]. MIR9-1, highly expressed in neural progenitor cells, governs neuronal differentiation, migration, and apoptosis by targeting multiple mRNA transcripts. It plays context-dependent roles in cancer, acting both as a tumor suppressor (e.g., in medulloblastoma via epigenetic silencing) and as an oncogene in other cancers. Aberrant MIR9-1 regulation is also associated with neurodegenerative diseases. Its molecular function and involvement in disease make MIR9-1 a candidate for diagnostic biomarkers and a potential, though challenging, therapeutic target[1][2][3].

Other names

hsa-mir-9-1MIRN9-1miRNA9-1mir-9-1

Mechanisms include modulation of miR-9-1 expression (re-expression, inhibition, or silencing) primarily via epigenetic regulation (e.g., CpG island hypermethylation reversal), miRNA mimics, and antisense inhibitors, which adjust post-transcriptional regulation of target mRNAs[2].