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25-Hydroxycholesterol in health and diseases
Cindy Nguyen1, Julien Saint-Pol1, Shiraz Dib1
1UR 2465, Laboratoire de la Barrière Hémato-Encéphalique (LBHE), Univ. Artois, Lens, France.
Journal of Lipid Research
|December 17, 2023
Summary
This review highlights 25-hydroxycholesterol, a key oxysterol produced during inflammation. It plays crucial roles in immune response, CNS disorders, and diseases like cancer and macular degeneration.
Area of Science:
- Biochemistry
- Cell Biology
- Immunology
Background:
- Cholesterol is vital for mammalian cell structure and function, regulating processes like signaling and endocytosis.
- Intracellular cholesterol levels are tightly controlled through synthesis, uptake, and metabolism into oxysterols.
- Oxysterols, once viewed as waste, are now recognized for critical roles in the nervous system, immune response, and various diseases.
Purpose of the Study:
- To review current knowledge on 25-hydroxycholesterol, an oxysterol primarily produced during inflammation.
- To discuss the involvement of 25-hydroxycholesterol and its metabolite 7α,25-dihydroxycholesterol in various physiological and pathological processes.
- To explore the impact of these oxysterols on immune response, CNS disorders, atherosclerosis, macular degeneration, and cancer.
Main Methods:
- Literature review of existing research on cholesterol metabolism and oxysterol functions.
- Synthesis of basic and recent findings concerning 25-hydroxycholesterol and its metabolite.
- Analysis of the roles of these oxysterols in cellular functions and disease development.
Main Results:
- 25-hydroxycholesterol is mainly produced during inflammatory or infectious conditions.
- This oxysterol significantly contributes to immune responses and central nervous system disorders.
- It is implicated in the pathogenesis of atherosclerosis, macular degeneration, and cancer development.
Conclusions:
- Oxysterols, particularly 25-hydroxycholesterol, are critical signaling molecules, not just metabolic byproducts.
- Understanding the roles of 25-hydroxycholesterol and its metabolite is crucial for addressing inflammatory diseases, neurological disorders, and cancer.
- Further research into oxysterol pathways may reveal novel therapeutic targets for age-related and other diseases.
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