Acyl-coenzyme A: cholesterol acyltransferase modulates the generation of the amyloid beta-peptide - PubMed (original) (raw)
Acyl-coenzyme A: cholesterol acyltransferase modulates the generation of the amyloid beta-peptide
L Puglielli et al. Nat Cell Biol. 2001 Oct.
Abstract
The pathogenic event common to all forms of Alzheimer's disease is the abnormal accumulation of the amyloid beta-peptide (Abeta). Here we provide strong evidence that intracellular cholesterol compartmentation modulates the generation of Abeta. Using genetic, biochemical and metabolic approaches, we found that cholesteryl-ester levels are directly correlated with Abeta production. Acyl-coenzyme A:cholesterol acyltransferase (ACAT), the enzyme that catalyses the formation of cholesteryl esters, modulates the generation of Abeta through the tight control of the equilibrium between free cholesterol and cholesteryl esters. We also show that pharmacological inhibitors of ACAT, developed for the treatment of atherosclerosis, are potent modulators of Abeta generation, indicating their potential for use in the treatment of Alzheimer's disease.
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