Hypoxia-inducible factor 1 subunit alpha (HIF-1α)

Hypoxia-inducible factor 1 subunit alpha (HIF‑1α) is a master regulatory transcription factor that mediates cellular adaptation to low oxygen environments. It forms a heterodimer with ARNT/HIF‑β to create functional hypoxia-inducible factor 1 (HIF‑1), which binds DNA at hypoxia response elements and activates genes involved in angiogenesis (such as VEGF), erythropoiesis, glucose metabolism, cell survival, proliferation, and invasion. Dysregulation or overexpression of HIF‑1α plays critical roles in cancer progression by promoting tumor vascularization and metabolic reprogramming; it is also implicated in ischemic diseases due to its role in tissue adaptation under low oxygen conditions. Because it controls multiple adaptive processes central both to normal physiology and disease states like cancer, HIF‑1α has become an important therapeutic target for drug development efforts focused on modulating cellular responses to hypoxia[1][3][9].

Other names

HIF-1αHIF1ABHLHe78PASD8MOP1Class E Basic Helix-Loop-Helix Protein 78PAS Domain-containing Protein 8Member Of PAS Protein 1

Inhibition or stabilization of the degradation pathway for HIF‑alpha subunits via prolyl hydroxylase inhibition increases transcriptional activity under normoxic conditions.– Direct inhibition blocks dimerization with ARNT or DNA binding to hypoxia response elements in gene promoters.