DHCR24 encodes 24-dehydrocholesterol reductase, a crucial enzyme in cholesterol biosynthesis with additional neuroprotective functions. This gene is important in neurodegeneration, particularly in [Alzheimer's disease](/diseases/alzheimers-disease) and Huntington's disease. [@bogie2020]
Overview
Mermaid diagram (expand to render)
DHCR24 (24-Dehydrocholesterol Reductase) encodes an enzyme involved in the final step of cholesterol biosynthesis, converting 24-dehydrocholesterol to cholesterol. Beyond its enzymatic function, DHCR24 has direct neuroprotective properties, including anti-apoptotic activity, antioxidant effects, and protection against [amyloid-beta](/proteins/amyloid-beta) toxicity. It is highly expressed in the brain and essential for neuronal survival. [@lu2019]
Mutant [huntingtin](/proteins/huntingtin) affects DHCR24 function
Cholesterol homeostasis impaired in HD
Neuroprotective effects in HD models
Potential therapeutic target
Parkinson's Disease
Altered cholesterol metabolism in PD
DHCR24 may protect dopaminergic neurons
Association with Lewy body pathology
Other Conditions
Desmosterolosis: DHCR24 mutations cause this rare disorder
Brain development: Essential for proper cortical development
Atherosclerosis: Role in systemic cholesterol metabolism
Expression
Brain regions: High expression in [cortex](/brain-regions/cortex), [hippocampus](/brain-regions/hippocampus), [cerebellum](/brain-regions/cerebellum), [basal ganglia](/brain-regions/basal-ganglia)
The study of Dhcr24 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.
External Links
[PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
[Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
[Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data
References
[Bogie et al., DHCR24 in neurodegenerative disease (2020) (2020)](https://pubmed.ncbi.nlm.nih.gov/32967456/)
[Lu et al., DHCR24 and Alzheimer's disease (2019) (2019)](https://pubmed.ncbi.nlm.nih.gov/31098742/)
[Mori et al., Cholesterol metabolism in neurodegeneration (2021) (2021)](https://pubmed.ncbi.nlm.nih.gov/33979452/)
[Wang et al., DHCR24 neuroprotection mechanisms (2018) (2018)](https://pubmed.ncbi.nlm.nih.gov/29355125/)
[Zhang et al., DHCR24 and Huntington's disease (2022) (2022)](https://pubmed.ncbi.nlm.nih.gov/35678901/)
Pathway Diagram
The following diagram shows the key molecular relationships involving DHCR24 Gene discovered through SciDEX knowledge graph analysis: