Small nucleolar RNA host gene 12 (SNHG12)

Small nucleolar RNA host gene 12 (SNHG12) is a long non-coding RNA (lncRNA) located on chromosome 1p35.3 that functions as an oncogenic regulator in various cancers. It acts primarily by sponging tumor-suppressive microRNAs—thereby derepressing oncogenic pathways involved in cell proliferation, migration, invasion, and drug resistance[1][2][3][4][5]. SNHG12 is processed from exonic regions and hosts several small nucleolar RNAs (SNORA44, SNORA61, SNORA16A, and SNORD99)[1][5]. Overexpression of SNHG12 is frequently found in hepatocellular, lung, renal, breast, gastric, and ovarian cancers, among others, where it promotes malignant progression and is associated with poor prognosis[1][2][3][4][5]. SNHG12 has also been implicated in resistance to several chemotherapeutic agents—most notably carboplatin, cisplatin, paclitaxel, and gefitinib—making it a promising but complex therapeutic target and biomarker for cancer therapy and prognosis[2][4][5]. Despite its emerging roles, targeting SNHG12 for therapy is still in preclinical stages, with ongoing research into its molecular functions, regulatory networks, and safety profile.

Other names

C1orf79PNAS-123TRG11TRG-11LINC00100ASLNC04080Transformation-related gene 11 proteinlong intergenic non-protein coding RNA 100NCRNA00100small nucleolar RNA host gene 12 (non-protein coding)

Acts as a competing endogenous RNA (ceRNA) or "sponge" for tumor-suppressive microRNAs, such as miR-199a/b-5p, miR-181a, miR-424-5p, miR-320, miR-138, miR-16-5p, miR-129-5p, miR-200c-5p, miR-195-5p, thus derepressing oncogenic targets Regulates key signaling pathways: Wnt/β-catenin, MAPK/Slug, Jak/STAT3, and NF-κB pathways Modulates epigenetic markers, potentially affecting histone modifications and neighboring gene expression