| Retinoic Acid Receptor Beta | |
|---|---|
| Gene Symbol | RARB |
| Full Name | Retinoic Acid Receptor Beta |
| Chromosome | 3p24.2 |
| NCBI Gene ID | 5916 |
| OMIM | 180260 |
| Ensembl ID | ENSG00000177030 |
| UniProt ID | P10828 |
| Associated Diseases | Cancer, Autism, Schizophrenia, Alzheimer's Disease |
RARB (Retinoic Acid Receptor Beta) is a gene encoding a protein involved in metabolic regulation. Located on chromosome 3p24.2, this gene encodes a protein that plays important roles in lipid metabolism, energy homeostasis, and transcriptional regulation.[1] The gene is expressed in multiple tissues including brain, where it is involved in neuroprotective pathways and inflammation.[2] Mutations or dysregulation of RARB have been implicated in Alzheimer's disease, Parkinson's disease, and metabolic disorders.[3]
RARB (Retinoic Acid Receptor beta) is a nuclear receptor that mediates the effects of retinoic acid (RA), a derivative of vitamin A. It is a ligand-activated transcription factor that binds retinoic acid and regulates gene expression. RARB plays critical roles in embryonic development, cell differentiation, and tissue homeostasis. In the nervous system, RA signaling is important for neuronal differentiation, synaptic plasticity, and memory formation. RARB acts as a heterodimer with RXRA to bind retinoic acid response elements (RAREs) in target genes.
RARB is implicated in neurodegenerative and neurodevelopmental diseases. In Alzheimer's disease, retinoic acid signaling through RARB may affect neuronal survival and amyloid metabolism. Reduced RARB expression has been observed in AD brain. In Parkinson's disease, RA signaling may protect dopaminergic neurons. RARB is also implicated in autism and schizophrenia - haploinsufficiency of RARB is associated with neurodevelopmental disorders. RARB agonists are being investigated as potential therapeutics for neurodegeneration and cognitive impairment.
RARB is expressed in many tissues during development, with expression in adult brain, lung, and skin. In the brain, it is expressed in cortex, hippocampus, basal ganglia, and cerebellum. Expression is detected in neurons. Multiple RARB isoforms exist due to alternative promoter usage and splicing.