Taurine up-regulated 1 (TUG1) (TUG1)

Taurine up-regulated 1 (TUG1) is a long non-coding RNA (lncRNA) approximately 7.1 kb in length, located on chromosome 22q12, which serves as a critical regulator of gene expression (PMID: 15247912). It functions primarily by acting as a molecular scaffold for chromatin-modifying complexes, such as Polycomb Repressive Complex 2 (PRC2), and by functioning as a sponge for various microRNAs, thereby modulating the expression of downstream target genes involved in cell cycle progression and apoptosis (PMID: 28655310). TUG1 is frequently overexpressed in a wide array of cancers, including glioma, lung, and colorectal cancers, where it is associated with poor clinical prognosis and promotes oncogenic phenotypes like increased proliferation and metastasis (PMID: 31114085). Additionally, TUG1 plays a significant role in non-oncological conditions, such as diabetic nephropathy, where it regulates mitochondrial bioenergetics in podocytes (PMID: 26903241). Therapeutic targeting of TUG1 is currently focused on the use of antisense oligonucleotides (ASOs) and RNA interference (RNAi) to knock down its expression, though challenges remain regarding systemic delivery and potential off-target effects (PMID: 31114085). Emerging research also investigates the use of small molecules to disrupt the RNA's secondary structure or its interaction with protein partners to inhibit its pathological activity. Given its broad involvement in disease progression and its measurable expression levels in patient tissues, TUG1 is also being evaluated as a potential diagnostic and prognostic biomarker.

Other names

Taurine up-regulated gene 1LincRNA-TUG1TUG-1Long intergenic non-protein coding RNA 446LINC00446

Knockdown of lncRNA expression via antisense oligonucleotides (ASOs) or RNA interference (RNAi) to inhibit oncogenic signaling and restore miRNA-mediated regulation (PMID: 31114085).