Retinoic acid receptor-related orphan receptor alpha (RORA) (RORA)

Retinoic acid receptor-related orphan receptor alpha (RORA) is a member of the nuclear receptor superfamily that functions as a ligand-dependent transcription factor (UniProt: P35398). It plays a critical role in regulating the circadian clock, lipid metabolism, and the immune system by binding to ROR response elements (ROREs) in target gene promoters (PubMed: 24659471). In the context of the complement pathway, RORA acts as a negative regulator by transcriptionally suppressing key components such as Complement Component 3 (C3) and Complement Factor B (CFB), particularly within the retinal pigment epithelium (PubMed: 26451005). This suppression is vital for maintaining tissue homeostasis and preventing the chronic inflammation associated with complement overactivation. Dysregulation or deficiency of RORA is strongly linked to the pathogenesis of age-related macular degeneration (AMD) and other neuroinflammatory conditions (PubMed: 26451005). Therapeutic approaches focus on RORA agonists, such as SR1078, to restore its suppressive function, thereby mitigating complement-mediated tissue damage and slowing disease progression (PubChem: CID 46943432).

Other names

NR1F1ROR-alphaNuclear receptor subfamily 1 group F member 1RZRAROR1

Agonism of RORA leads to its binding to ROR response elements (ROREs) in the promoters of complement genes, resulting in transcriptional suppression of complement components like C3 and Factor B (PubMed: 26451005).