Abstract
Cholesterol is an indispensable component of the cell membrane and plays vital roles in critical physiological processes. Brain cholesterol accounts for a large portion of total cholesterol in the human body, and its content must be tightly regulated to ensure normal brain function. Disorders of cholesterol metabolism in the brain are linked to neurodegenerative diseases, including Alzheimer’s disease (AD), Parkinson’s disease (PD), Huntington’s disease (HD), and other atypical cognitive deficits that arise at old age. However, the specific role of cholesterol metabolism disorder in the pathogenesis of neurodegenerative diseases has not been fully elucidated. Statins that are a class of lipid-lowering drugs have been reported to have a positive effect on neurodegenerative diseases. Herein, we reviewed the physiological and pathological conditions of cholesterol metabolism and discussed the possible mechanisms of cholesterol metabolism and statin therapy in neurodegenerative diseases.
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Abbreviations
- AD:
-
Alzheimer’s disease
- PD:
-
Parkinson’s disease
- HD:
-
Huntington’s disease
- BBB:
-
Blood–brain barrier
- ER:
-
Endoplasmic reticulum
- HMG-CoA:
-
3-Hydroxy-3-methylglutaryl CoA
- DE:
-
Desmosterol
- DHCR24:
-
24-Dehydrocholesterol reductase
- DHCR7:
-
7-Dehydrocholesterol reductase
- LT:
-
Lathosterol
- 7D:
-
7-Dehydrocholesterol
- PM:
-
Plasma membrane
- SREBP-2:
-
Sterol regulatory element-binding protein
- SCAP:
-
SREBP cleavage-activating protein
- SRE:
-
Sterol regulatory elements
- HDL:
-
High-density lipoprotein cholesterol
- LDL:
-
Low-density lipoprotein cholesterol
- VLDL:
-
Very-low-density lipoprotein cholesterol
- APOE:
-
Apolipoprotein E
- ABC transporters:
-
ATP-binding cassette (ABC) transporters
- LDLR:
-
Low-density lipoprotein family receptors
- ACAT1/SOAT1:
-
Acyltransferase 1
- CSF:
-
Cerebrospinal fluid
- 24-OHC:
-
24-Hydroxycholesterol
- Aβ:
-
Amyloid-β
- ACID:
-
APP intracellular domain
- APP:
-
Amyloid precursor protein
- 27-OHC:
-
27-Hydroxylcholesterol
- CYP27A1:
-
Sterol 27-hydroxylase
- RAS:
-
Renin–angiotensin system
- PLTP:
-
Phospholipid transporters
- SNpc:
-
Substantia nigra pars compacta
- LBs:
-
Lewy bodies
- ApoA1:
-
Apolipoprotein A-I
- PON1:
-
Oxygenase 1
- VMAT2:
-
Vesicular monoamine transporter 2
- DAT:
-
Dopamine transporter
- mβCD:
-
Methyl-β-cyclodextrin
- LXRs:
-
Liver X receptors
- TH:
-
Tyrosine hydroxylase
- NMDAR1:
-
N-methyl-d-aspartic acid receptor 1
- TNF-α:
-
Tumor necrosis factor-α
- IL-1β:
-
Interleukin-1β
- IL-6:
-
Interleukin-6
- NO:
-
Nitric oxide
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This work was supported by grants from the National Natural Science Foundation of China (Nos. 81822016 and 81771382) and the Natural Science Foundation of Hubei Province (No. 2018CFA036) to Z. Zhang.
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Dai, L., Zou, L., Meng, L. et al. Cholesterol Metabolism in Neurodegenerative Diseases: Molecular Mechanisms and Therapeutic Targets. Mol Neurobiol 58, 2183–2201 (2021). https://doi.org/10.1007/s12035-020-02232-6
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DOI: https://doi.org/10.1007/s12035-020-02232-6