Retinoid-related orphan receptor alpha (RORA)

Retinoid-related orphan receptor alpha (RORα), also known as NR1F1, is a ligand-dependent nuclear receptor and transcription factor that plays a fundamental role in the mammalian circadian clock by positively regulating the expression of BMAL1. It is widely expressed across tissues including the liver, skeletal muscle, brain, and adipose tissue, where it coordinates lipid and glucose metabolism, limits inflammation, and promotes cellular differentiation. RORα is essential for the maturation of Purkinje cells in the cerebellum and the development of Type 2 innate lymphoid cells (ILC2s). Dysregulation of RORα is strongly linked to metabolic syndrome, atherosclerosis, and autoimmune disorders, as well as neuropsychiatric conditions like autism and depression. In oncology, RORα often acts as a tumor suppressor, and its activation with small-molecule agonists is being explored as a therapeutic strategy for metabolic dysfunction-associated steatohepatitis (MASH) and cardiovascular diseases.

Other names

NR1F1Nuclear receptor RORARAR-related orphan receptor alphaRetinoic acid receptor-related orphan receptor alphaRZRAROR1ROR2ROR3

Binds as a monomer to ROR response elements (ROREs) in the promoter regions of target genes to recruit coactivators (such as p300 and PGC-1α) and stimulate transcription; agonists enhance this recruitment, while inverse agonists promote the recruitment of corepressors (such as NCoR) to inhibit gene expression.