Simvastatin (MK 733) is a competitive inhibitor of HMG-CoA reductase with a K_i of 0.2 nM.

Ki: 0.2 nM (HMG-CoA reductase)^[1]

Simvastatin needs to be activated by NaOH in EtOH treatment before use for cell assay (Activation of Simvastatin: 2 mg of Simvastatin in 50 μL of ethanol and 75 μL of 0.1 N NaOH, incubated at 50°C for 2 hours. The pH is adjusted to 7.2 with HCl). Simvastatin suppresses cholesterol synthesis in mouse L-M cell, rat H4II E cell, and human Hep G2 cell with IC₅₀s of 19.3 nM, 13.3 nM and 15.6 nM, respectively^[1]. Simvastatin causes a dose-dependent increase in serine 473 phosphorylation of Akt within 30 minutes, with maximal phosphorylation occurring at 1.0 µM. Simvastatin (1.0 μM) enhances phosphorylation of the endogenous Akt substrate endothelial nitric oxide synthase (eNOS), inhibits serum-free media undergo apoptosis and accelerates vascular structure formation^[2]. Simvastatin shows anti-inflammatory effects, reduces anti-CD3/anti-CD28 antibody-stimulated proliferation of PB-derived mononuclear cells and synovial fluid cells from rheumatoid arthritis blood, as well as IFN-γ release at 10 μM. Simvastatin (10 μM) also blocks cell-mediated macrophage TNF-γ release induced via cognate interactions by appr 30%^[3]. Simvastatin (5 μM) significantly reduces the expression of ABCA1 in astrocytes and neuroblastoma cells, the expression of apolipoprotein E in astrocytes, and increases cyclin-dependent kinase 5 and glycogen synthase kinase 3β expression in SK-N-SH cells^[7].Simvastatin has the ability to inhibit exosome release^[10].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Simvastatin suppresses the conversion of radiolabeled acetate to cholesterol with an IC₅₀ of 0.2 mg/kg via p.o. administration^[1]. Simvastatin (4 mg/day, p.o. for 13 weeks) returns the cholesterol-induced increases in total cholesterol, LDL-cholesterol and HDL-cholesterol to normal level in rabbits fed an atherogenci cholesterol-rich diet^[4]. Simvastatin (6 mg/kg) increases LDL receptor-dependent binding and the number of hepatic LDL receptors in rabbits fed a diet containing 0.25% cholesterol^[5]. Simvastatin affects inflammation independent of its effect on plasma cholesterol level. Simvastatin (20 mg/kg/day) causes a 1.3-fold less macrophage content in lesions, and 2-fold less vascular cell adhesion molecule-1, interleukin-1beta, and tissue factor expression, companied by a 2.1-fold increases in lesional smooth muscle cell and collagen content in cynomolgus monkeys fed an atherogenic diet^[6].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

418.57

C₂₅H₃₈O₅

79902-63-9

辛伐他汀；辛伐他丁

Room temperature in continental US; may vary elsewhere.

Ethanol : 100 mg/mL (238.91 mM; Need ultrasonic)

DMSO : ≥ 50 mg/mL (119.45 mM)

* “≥” means soluble, but saturation unknown.

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂： 50% PEG300    50% saline

  Solubility: 10 mg/mL (23.89 mM); Suspended solution; Need ultrasonic
• 2.

  请依序添加每种溶剂： 10% DMSO    40% PEG300    5% Tween-80    45% saline

  Solubility: ≥ 2.5 mg/mL (5.97 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.97 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 3.

  请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in saline)

  Solubility: 2.5 mg/mL (5.97 mM); Suspended solution; Need ultrasonic

  此方案可获得 2.5 mg/mL (5.97 mM) 的均匀悬浊液，悬浊液可用于口服和腹腔注射。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 4.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 2.5 mg/mL (5.97 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.97 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• 5.

  请依序添加每种溶剂： 10% EtOH    90% (20% SBE-β-CD in saline)

  Solubility: ≥ 2.5 mg/mL (5.97 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.97 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 EtOH 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 6.

  请依序添加每种溶剂： 10% EtOH    90% corn oil

  Solubility: ≥ 2.5 mg/mL (5.97 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (5.97 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 EtOH 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Slater, E.E., et al. Mechanism of action and biological profile of HMG CoA reductase inhibitors. A new therapeutic alternative. Drugs, 1988. 36 Suppl 3: p. 72-82.

  [2]. Kureishi, Y., et al. The HMG-CoA reductase inhibitor simvastatin activates the protein kinase Akt and promotes angiogenesis in normocholesterolemic animals. Nat Med, 2000. 6(9): p. 1004-10.

  [3]. Leung BP, et al. A novel anti-inflammatory role for simvastatin in inflammatory arthritis. J Immunol. 2003 Feb 1;170(3):1524-30.

  [4]. Kobayashi M, et al. Preventive effect of MK-733 (simvastatin), an inhibitor of HMG-CoA reductase, on hypercholesterolemia and atherosclerosis induced by cholesterol feeding in rabbits. Jpn J Pharmacol. 1989 Jan;49(1):125-33.

  [5]. Ishida F, et al. Comparative effects of simvastatin (MK-733) and CS-514 on hypercholesterolemia induced by cholesterol feeding in rabbits. Biochim Biophys Acta. 1990 Feb 23;1042(3):365-73.

  [6]. Sukhova GK, et al. Statins reduce inflammation in atheroma of nonhuman primates independent of effects on serum cholesterol. Arterioscler Thromb Vasc Biol. 2002 Sep 1;22(9):1452-8.

  [7]. Weijiang Dong, et al. Differential effects of simvastatin and CS-514 on expression of Alzheimer’s disease-related genes in human astrocytes and neuronal cells. J Lipid Res. 2009 Oct; 50(10): 2095-2102.

  [8]. Liu Z, et al. Pretreatment Donors after Circulatory Death with Simvastatin Alleviates Liver Ischemia Reperfusion Injury through a KLF2-Dependent Mechanism in Rat. Oxid Med Cell Longev. 2017;2017:3861914.

  [9]. Ifergan I, et al. Statins reduce human blood-brain barrier permeability and restrict leukocyte migration: relevance to multiple sclerosis. Ann Neurol. 2006 Jul;60(1):45-55.

  [10]. Zhang H, et al. Advances in the discovery of exosome inhibitors in cancer. J Enzyme Inhib Med Chem. 2020;35(1):1322-1330.

Before use, Simvastatin needs to be converted to open acid form by reconstitution of 50mg in 1mL ethanol, addition of 0.813 mL 1N NaOH, and pH adjustment to 7.2 with 1N HCl^[9]. Primary human astrocytes from four different donors are prepared from tissue obtained from legally aborted fetuses. Primary human astrocytes and SK-N-SH neuroblastoma cell line (ATCC) are plated on 6-well plates and grown in DMEM supplemented with 5% or 8% fetal calf serum, respectively, at 37°C, 5% CO₂ until 80% confluent. For measurement of gene expression levels at baseline, cells are just washed and RNA is prepared and assayed as outlined below. Baseline gene expression levels in astrocytes are measured in primary human astrocytes obtained from two donors. For experimental purposes, cells are incubated under serum-free conditions. Primary human astrocytes are obtained from four donors. Based on preliminary time-dependent studies, 48-h incubation is used for all of experiments. Based on the dose-response studies, a majority of our experiments are conducted using the following concentrations of active compounds: Simvastatin at 5 μM, CS-514 at 10 μM, mevalonate at 50 μM, and GGPP and FPP at 10 μM. Following incubation, cells are extensively washed to remove dead cells and cell debris and prepared for further analyses^[7].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Monkeys^[1]
Thirty-nine adult male cynomolgus monkeys are initially fed a moderately atherogenic diet containing 0.28 mg cholesterol per calorie of diet, with 16.7% from protein, 45.1% from lipids, and 38.1% from carbohydrates. After consuming the atherogenic diet for 3 months, the monkeys are divided into 3 groups (n=13 each) that are equivalent in their total plasma cholesterol (TPC), LDL-C, and HDL cholesterol (HDL-C) concentrations; these groups consume the atherogenic diet and receive statin (or control) treatment for an additional 15 months. Control monkeys are fed the atherogenic diet with no added statins. Prava-treated monkeys have 40 mg Prava/kg body wt per day added to the atherogenic diet. Simvastatin-treated monkeys consumed 20 mg Simvastatin/kg body wt per day^[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Slater, E.E., et al. Mechanism of action and biological profile of HMG CoA reductase inhibitors. A new therapeutic alternative. Drugs, 1988. 36 Suppl 3: p. 72-82.

  [2]. Kureishi, Y., et al. The HMG-CoA reductase inhibitor simvastatin activates the protein kinase Akt and promotes angiogenesis in normocholesterolemic animals. Nat Med, 2000. 6(9): p. 1004-10.

  [3]. Leung BP, et al. A novel anti-inflammatory role for simvastatin in inflammatory arthritis. J Immunol. 2003 Feb 1;170(3):1524-30.

  [4]. Kobayashi M, et al. Preventive effect of MK-733 (simvastatin), an inhibitor of HMG-CoA reductase, on hypercholesterolemia and atherosclerosis induced by cholesterol feeding in rabbits. Jpn J Pharmacol. 1989 Jan;49(1):125-33.

  [5]. Ishida F, et al. Comparative effects of simvastatin (MK-733) and CS-514 on hypercholesterolemia induced by cholesterol feeding in rabbits. Biochim Biophys Acta. 1990 Feb 23;1042(3):365-73.

  [6]. Sukhova GK, et al. Statins reduce inflammation in atheroma of nonhuman primates independent of effects on serum cholesterol. Arterioscler Thromb Vasc Biol. 2002 Sep 1;22(9):1452-8.

  [7]. Weijiang Dong, et al. Differential effects of simvastatin and CS-514 on expression of Alzheimer’s disease-related genes in human astrocytes and neuronal cells. J Lipid Res. 2009 Oct; 50(10): 2095-2102.

  [8]. Liu Z, et al. Pretreatment Donors after Circulatory Death with Simvastatin Alleviates Liver Ischemia Reperfusion Injury through a KLF2-Dependent Mechanism in Rat. Oxid Med Cell Longev. 2017;2017:3861914.

  [9]. Ifergan I, et al. Statins reduce human blood-brain barrier permeability and restrict leukocyte migration: relevance to multiple sclerosis. Ann Neurol. 2006 Jul;60(1):45-55.

  [10]. Zhang H, et al. Advances in the discovery of exosome inhibitors in cancer. J Enzyme Inhib Med Chem. 2020;35(1):1322-1330.