BCL2A1 is a human gene whose product bCL2A1 encodes an anti-apoptotic protein that regulates the intrinsic (mitochondrial) apoptosis pathway:. This page covers the gene's normal function, disease associations, expression patterns, and key research findings relevant to neurodegeneration.
BCL2A1 (BCL2-Related Protein A1) is a gene encoding an anti-apoptotic protein member of the BCL2 family. BCL2A1 plays a critical role in regulating mitochondrial apoptosis pathways, neuronal survival, and neuroinflammation. Dysregulation of BCL2A1 is implicated in Alzheimer's disease, Parkinson's disease, and ALS, making it a key gene in understanding neurodegenerative processes[1][2].
BCL2A1 is located on chromosome 15q24.2 and encodes a mitochondrial anti-apoptotic protein. Unlike other BCL2 family members, BCL2A1 is primarily expressed in hematopoietic cells but is also induced in neurons under stress conditions[3].
| Property | Value |
|---|---|
| Gene Symbol | BCL2A1 |
| Alternative Names | BFL-1, A1, GRS |
| Chromosomal Location | 15q24.2 |
| NCBI Gene ID | 602 |
| UniProt ID | Q9GZW8 |
| Protein Family | BCL2 family (anti-apoptotic) |
BCL2A1 encodes an anti-apoptotic protein that regulates the intrinsic (mitochondrial) apoptosis pathway:
BCL2A1 prevents MOMP by:
In neurons, BCL2A1 protects against:
BCL2A1 interacts with autophagy regulators:
BCL2A1 dysregulation contributes to AD pathogenesis through several mechanisms[4][5]:
Amyloid-beta toxicity:
Tau pathology:
Neuroinflammation:
In PD, BCL2A1 plays a protective role against dopaminergic neuron loss[6][7]:
Alpha-synuclein toxicity:
Mitochondrial dysfunction:
Oxidative stress:
BCL2A1 involvement in ALS includes[8]:
Motor neuron survival:
Glial contributions:
BCL2A1 expression in the nervous system:
| Cell Type | Expression Level |
|---|---|
| Neurons | Low (inducible) |
| Microglia | Moderate |
| Astrocytes | Low-Moderate |
| Oligodendrocytes | Low |
| Hematopoietic cells | High |
Expression is inducible in neurons by:
BCL2A1 represents a potential therapeutic target[9]:
BCL2 proteins in ALS (2016). 2016. ↩︎