Mevastatin CAS NO 73573-88-3 Inquire about Mevastatin

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What is Mevastatin

Mevastatin (compactin, ML-236B) is a hypolipidemic agent that belongs to the statins class.

It was isolated from the mold Penicillium citrinum by Akira Endo in the 1970s, and he identified it as a HMG-CoA reductase inhibitor, i.e., a statin. Mevastatin might be considered the first statin drug; clinical trials on mevastatin were performed in the late 1970s in Japan, but it was never marketed. The first statin drug available to the general public was lovastatin.
Mevastatin has since been derivatized to the compound pravastatin, which is a pharmaceutical used in the lowering of cholesterol and preventing cardiovascular disease.
In vitro, it has antiproliferative properties.
High doses inhibit growth and proliferation of melanoma cells.
Mevastatin is a carboxylic ester that is pravastatin that is lacking the allylic hydroxy group. A hydroxymethylglutaryl-CoA reductase inhibitor (statin) isolated from Penicillium citrinum and from Penicillium brevicompactum, its clinical use as a lipid-regulating drug ceased following reports of toxicity in animals. It has a role as a fungal metabolite, an EC 3.4.24.83 (anthrax lethal factor endopeptidase) inhibitor, an antifungal agent, a Penicillium metabolite and an apoptosis inducer. It is a carboxylic ester, a statin (naturally occurring), a member of hexahydronaphthalenes, a member of 2-pyranones and a polyketide.

Mevastatin or compactin is a cholesterol-lowering agent isolated from Penicillium citinium. It was the first discovered agent belonging to the class of cholesterol-lowering medications known as statins. During a search for antibiotic compounds produced by fungi in 1971, Akira Endo at Sankyo Co. (Japan) discovered a class of compounds that appeared to lower plasma cholesterol levels. Two years later, the research group isolated a compound structurally similar to hydroxymethylglutarate (HMG) that inhibited the incorporation of acetate. The compound was proposed to bind to the reductase enzyme and was named compactin. Mevastatin is a competitive inhibitor of HMG-Coenzyme A (HMG-CoA) reductase with a binding affinity 10,000 times greater than the HMG-CoA substrate itself. Mevastatin is a pro-drug that is activated by in vivo hydrolysis of the lactone ring. It has served as one of the lead compounds for the development of the synthetic compounds used today.

Biosynthesis

Biosynthesis of mevastatin is primarily accomplished via a type 1 PKS pathway it proceeds in the PKS pathway as seen in figure 1 until it reaches a hexaketide state where it undergoes a Diels-Alder cyclization. After cyclization it continues via the PKS pathway to a nonaketide after which it is released and undergoes oxidation and dehydration. It is presumed that the oxidations are preformed by a polypeptide that is similar to cytochrome p450 monooxygenase, which is encoded by mlcC within the mevastatin gene. Lastly the biosynthesis is completed by the PKS facilitating the addition of a diketide sidechain and a methylation by SAM. Figure 1 shows mevastatin in its acid form but it can also be in the more commonly seen lactone form. This pathway was first observed in Penicillium cilrinum and was later discovered that another type of fungus, Penicillium brevicompaetum also produced mevastatin via a PKS pathway.

Pharmacology

Sustained elevations of cholesterol in the blood increase the risk of cardiovascular disease. Mevastatin acts to lowers hepatic production of cholesterol by competitively inhibiting HMG-CoA reductase, the enzyme that catalyzes the rate-limiting step in the cholesterol biosynthesis pathway via the mevalonic acid pathway. When hepatic cholesterol levels are decreased it causes an increased uptake of low density lipoprotein (LDL) cholesterol and reduces cholesterol levels in the circulation. It has also been shown that mevastatin upregulates endothelial nitric oxide synthase (eNOS) in mice, which is essential for maintaining a healthy cardiovascular system.

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