Cyp46A1 — Cholesterol 24 Hydroxylase plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Cyp46A1 — Cholesterol 24 Hydroxylase is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
The CYP46A1 gene encodes cholesterol 24-hydroxylase, a enzyme expressed primarily in neurons of the brain that catalyzes the conversion of cholesterol to 24-hydroxycholesterol. This enzyme is the key player in cholesterol elimination from the brain, as 24-hydroxycholesterol can cross the blood-brain barrier for peripheral clearance. Genetic variations in CYP46A1 have been associated with an increased risk of Alzheimer's disease, making it an important therapeutic target.
| CYP46A1 | |
|---|---|
| Full Name | Cholesterol 24-Hydroxylase |
| Chromosome | 14 |
| Location | 14q13.3 |
| NCBI Gene ID | 10585 |
| OMIM | 604673 |
| Ensembl ID | ENSG00000146386 |
| UniProt ID | Q9Y3D5 |
CYP46A1 plays a critical role in cholesterol metabolism, which is intimately connected to Alzheimer's disease pathogenesis through multiple mechanisms:
The brain contains approximately 25% of the body's cholesterol but is isolated from peripheral cholesterol by the blood-brain barrier. Key mechanisms include:
| Mechanism | Effect |
|---|---|
| Altered cholesterol metabolism | Increases Aβ production |
| Dysregulated APP processing | Enhances amyloidogenesis |
| Impaired synaptic cholesterol | Defects in neurotransmission |
| Oxidative stress | Neuronal vulnerability |
| Disease | Relationship |
|---|---|
| Alzheimer's Disease | Primary association |
| Cognitive Impairment | Secondary complication |
| Cardiovascular disease | Comorbidity |
HMGCR inhibitors (statins) have been studied extensively in AD:
The CYP46A1 gene shows distinct expression patterns:
Bjorkhem I, et al. (2006). "Cholesterol 24-hydroxylase: an enzyme of cholesterol elimination in the brain." Biochemical and Biophysical Research Communications. DOI:10.1016/j.bbrc.2006.02.114
Carter CJ. (2007). "Alzheimer's disease: APP, gamma-secretase, APOE, LDLR, and cholesterol: a pathological triad?" Journal of Neurochemistry. DOI:10.1111/j.1471-4159.2007.04586.x
Cyp46A1 — Cholesterol 24 Hydroxylase plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
The study of Cyp46A1 — Cholesterol 24 Hydroxylase 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.