HBG1 and HBG2 promoter

The HBG1 and HBG2 promoters are DNA regulatory sequences located upstream of the HBG1 (Aγ-globin) and HBG2 (Gγ-globin) genes, which comprise the fetal γ-globin subunits of hemoglobin. These promoters orchestrate the developmental switching of hemoglobin from fetal to adult types and are key targets for therapeutic interventions aiming to reactivate fetal hemoglobin in patients with sickle cell disease and β-thalassemia. Their regulation involves a network of transcription factors, notably BCL11A and members of the NFI family, which repress γ-globin expression in adult erythroid cells. Genome-editing approaches that disrupt these promoter regions can derepress γ-globin expression, offering a promising strategy for treating hemoglobinopathies[5][6][7].

Other names

gamma-globin gene promoterHBG1 promoterHBG2 promoterγ-globin promoter

Reactivation of fetal hemoglobin by disrupting repressor binding or regulatory elements in HBG1/HBG2 promoters. Inhibiting binding of transcriptional repressors (e.g., BCL11A, NFIA, NFIX).