Opa1 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
OPA1 (Optic Atrophy 1) is a nuclear-encoded mitochondrial dynamin-related protein essential for mitochondrial inner membrane fusion and cristae maintenance. Mutations cause autosomal dominant optic atrophy (ADOA), the most common inherited optic neuropathy.
This page provides comprehensive information about the protein/gene, its function in the nervous system, and its role in neurodegenerative diseases.
| Property | Value |
|---|---|
| Gene Symbol | OPA1 |
| Full Name | Optic Atrophy 1 (Dynamin-like 120kDa) |
| Chromosomal Location | 3q29 |
| NCBI Gene ID | 4976 |
| OMIM | 165300 |
| Ensembl ID | ENSG00000198836 |
| UniProt | O60393 |
| Gene Type | Protein-coding |
OPA1 encodes a dynamin-related GTPase localized to the mitochondrial inner membrane. It plays critical roles in:
| Disease | Inheritance | Mechanism | References |
|---|---|---|---|
| Autosomal Dominant Optic Atrophy (ADOA) | AD | Haploinsufficiency, mitochondrial dysfunction | PMID:11734942 |
| Kjer Optic Neuropathy | AD | OPA1 mutations causing optic nerve degeneration | PMID:11231952 |
| Multiple Systemic Atrophy | - | OPA1 polymorphisms increase risk | PMID:25851007 |
| Parkinson's Disease | - | OPA1 deficiency enhances vulnerability | PMID:25626704 |
| Amyotrophic Lateral Sclerosis (ALS) | - | OPA1 aggregation and mitochondrial fragmentation | PMID:32246914 |
OPA1 is ubiquitously expressed with highest levels in:
Alexander C, et al. (2000) OPA1, encoding a dynamin-related GTPase, is mutated in autosomal dominant optic atrophy linked to chromosome 3q28. Nat Genet. 26(2):211-215. PMID:11734942
Delettre C, et al. (2001) Gene structure and expression analysis of the OPA1 protein. Exp Eye Res. 73(1):101-108.
Carelli V, et al. (2015) Motor neuron disease resulting from inheritance of a pathogenic OPA1 variant. Neurology. 85(9):786-789.
Yu-Wai-Man P, et al. (2010) OPA1 mutations induce mitochondrial DNA instability and optic nerve head mitochondria dysfunction. Brain. 133(Pt 3):771-784.
The study of Opa1 Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
[1] OPA1 and autosomal dominant optic atrophy. PMID:15776380
OPA1 is a promising therapeutic target for mitochondrial disorders and neurodegenerative diseases. Gene therapy approaches to restore OPA1 function are in development for ADOA and other conditions. Small molecules that enhance OPA1-mediated mitochondrial fusion are being investigated.
| Approach | Target | Stage | Disease |
|---|---|---|---|
| Gene therapy (AAV-OPA1) | OPA1 | Preclinical | ADOA |
| Mitochondrial fusion promoters | OPA1 | Discovery | AD, PD |
| Antisense oligonucleotides | OPA1 splicing | Discovery | Cancer |
Research on OPA1 focuses on understanding how mutations cause autosomal dominant optic atrophy and other conditions. Studies are investigating the role of OPA1 in mitochondrial DNA maintenance and neuronal survival. Additionally, research is exploring biomarkers for OPA1 dysfunction and treatment response.