Abstract
The cholesterol biosynthesis pathway, also referred to as the mevalonate (MVA) pathway, is responsible for the biosynthesis of two key isoprenoids: farnesyl pyrophosphate (FPP) and geranylgeranyl pyrophosphate (GGPP). Post-translational modification of small GTPases by FPP and GGPP has captured much attention due to their potential contribution to cancer, cardiovascular and neurodegenerative diseases. The enzyme 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase (HMGCR) catalyzes the conversion of HMG-CoA to MVA, and is the rate-limiting step in the biosynthesis of cholesterol. Statins are HMGCR inhibitors that are used extensively in the treatment of hypercholesterolemia. Inhibitors of the MVA pathway exhibit anti-tumor effects and may reduce cancer incidence and cancer-related mortality in humans. In this review, we will focus on the mevalonate cascade and its regulation in cholesterol metabolism as well as polymorphisms of the MVA cascade in cancer development, infectious and cardiovascular disease (CVD).
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