Upstream transcription factor family member 3 (USF3)

Upstream transcription factor family member 3 (USF3) is a large protein characterized by a basic helix-loop-helix domain, enabling DNA binding and transcriptional regulation. USF3 regulates key biological pathways, including the inhibition of epithelial-mesenchymal transition (linked to cancer cell migration and invasiveness) and the promotion of osteoblast differentiation (regulating bone density and osteoporosis risk). Pathogenic variants, such as polyglutamine deletions, are associated with increased susceptibility to papillary thyroid carcinoma, while variants in its 3′-UTR affect bone biology through microRNA interactions. Although USF3 has been extensively studied for its roles in cancer and bone metabolism, it is not a direct drug target but represents a potential biomarker for disease risk and pathogenesis.

Other names

Basic helix-loop-helix domain-containing protein USF3KIAA2018Upstream transcription factor 3USF3

Not applicable; no drugs directly target USF3. For potential therapeutic modulation, mechanisms would involve altering USF3-mediated transcriptional regulation of genes involved in EMT or bone metabolism.