mir-497-195 cluster host gene (MIR497HG)

The mir-497-195 cluster host gene (MIR497HG) is a long non-coding RNA located at chromosome 17p13.1, acting as the host gene for the miR-195 and miR-497 microRNAs, both of which are embedded within its first intron[1][3][4]. MIR497HG and its derivative miRNAs (miR-195, miR-497) are frequently downregulated in multiple cancers, including breast and bladder cancer, where low expression is associated with poor clinical outcomes and increased cellular proliferation, invasion, and resistance to therapies such as tamoxifen[1][2][3][5]. MIR497HG exerts its tumor-suppressor effects largely through the miR-195/497 cluster, which in turn targets key regulators of cell cycle and survival pathways (e.g., CCND1, BIRC5, SMAD3, YAP)[2][5]. It is not a therapeutic target in the classical sense (i.e., not a receptor, enzyme, channel, or transporter), but rather an emerging non-coding RNA biomarker and possible therapeutic modulator in cancer biology.

Other names

MIR195HGALOX12-AS1ALOX12 antisense RNA 1mir-497-195 cluster host gene (non-protein coding)

Forced expression or silencing of MIR497HG modulates cancer phenotypes via regulation of its intronic miRNAs (miR-195, miR-497) and their downstream targets (such as CCND1, BIRC5, SMAD3, YAP)