Catalog No.S2187 Synonyms: CI-1011
Molecular Weight(MW): 501.72
Avasimibe inhibits ACAT with IC50 of 3.3 μM, also inhibits human P450 isoenzymes CYP2C9, CYP1A2 and CYP2C19 with IC50 of 2.9 μM, 13.9 μM and 26.5 μM, respectively.
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a, b, Melanoma-bearing mice were treated with avasimibe (Ava) or DMSO control (5 times) (control, n=9; avasimibe, n=8). c-e, STORM analysis of TCR clustering of tumour-infiltrating CD8+ T cells. c, Representative images. d, Ripley’s K-function analysis of TCR molecules. e, The r value at the maximal L(r)-r value of Ripley’s K-function curves (control, n=100; avasimibe, n=85). f, g, A combined therapy (avasimibe and anti-PD-1) or monotherapies (avasimibe or anti-PD-1) in treating melanoma (n=10). Avasimibe, 5 times; anti-PD-1, 4 times. h, i, Cytokine/granule productions of PD-1hi and PD-1lo tumour-infiltrating CD8+ T cells (control, n=12; avasimibe, n=11).
Nature, 2016, 531(7596):651-5.. Avasimibe purchased from Selleck.
(d) Representative images of MIA PaCa-2 cells migrated through Transwell membrane. The cells were treated with DMSO or 2.5 μM avasimibe, stained with 10 μg/ml PI for 30 min. Scale bar: 20 μm. (e) Quantification of the number of migrated and invaded cells treated with avasimibe at 0, 2.5, 5 and 7.5 μM or stably transfected with control shRNA or ACAT-1 shRNA. Cell number was counted using ImageJ cell counter function. The data are shown as means+s.e.m.; n⩾6; *P<0.05, **P<0.01, ***P<0.001.
Oncogene, 2016, 35(50):6378-6388. Avasimibe purchased from Selleck.
Purity & Quality Control
Choose Selective P450 (e.g. CYP17) Inhibitors
|Description||Avasimibe inhibits ACAT with IC50 of 3.3 μM, also inhibits human P450 isoenzymes CYP2C9, CYP1A2 and CYP2C19 with IC50 of 2.9 μM, 13.9 μM and 26.5 μM, respectively.|
Avasimibe at concentration of 1μg/mL causes reduction of Total cholesterol (TC) and Esterified cholesterol (EC) through inhibiting LDL binding and decreasing scavenger receptor numbers during foam cell formation in human monocyte-derived macrophages (HMMs). Avasimibe at concentration of 2μg/mL enhances cholesterol efflux from established HMM foam cells preincubating with 10μg/ml LDL.  Avasimibe inhibits Lipoprotein(a) accumulation in the culture media of primary monkey hepatocyte in a dose-dependent manner with 11.9% -31.3% inhibition, the change is mainly associated with decreased ApoA.  Avasimibe incubating at concentration of 10 nM, 1 μM, and 10 μM for 24 hours in HepG2 cells reduce ApoB secretion into media by 25%, 27%, and 43%, respectively. Avasimibe decreases ApoB secretion by enhanced intracellular degradation of ApoB rather than decreased synthesis of ApoB.  Avasimibe inhibits ACTC with IC50 of 3.3 μM in IC-21 macrophages with consideration of the total inhibitor concentration in the assay sample.  Avasimibe inhibits human P450 isoenzymes CYP2C9, CYP1A2 and CYP2C19 with IC50 of 2.9 μM, 13.9 μM and 26.5 μM, respectively.  Avasimibe inhibits ACAT-1 expression and cholesterol ester synthesis in glioma cell lines. Avasimibe inhibits the growth of the glioma cells by inducing cell cycle arrest and apoptosis due to caspase-8 and caspase-3 activation. 
|In vivo||Avasimibe significantly reduces Lipoprotein(a) and total cholesterol levels in nine healthy male monkeys with a normal chow diet orally treated with CI-1011 at 30 mg/kg per day for 3 weeks, Lipoprotein(a) and total cholesterol levels reduce to 68 and 73% of control levels, respectively. Avasimibe decreases total cholesterol mainly due to reduction of low density lipoprotein (LDL).  Avasimibe decreases amyloid plaque load in the cortex and hippocampus and reduces the levels of insoluble Abeta40 and Abeta42 and C-terminal fragments of amyloid precursor protein (APP) in brain extracts in young human APP transgenic mice. Avasimibe reduces diffuse amyloid plaques by suppression of astrogliosis and enhanced microglial activation in aged human APP transgenic mice. |
P450 Inhibition Studies:Pooled human liver microsomes (HLM) from at least 15 donors are used for all inhibition assays. For IC50 determinations, the substrate probes are used at their approximate in vitro Km values. All incubations are performed with 100 mM potassium phosphate buffer (pH 7.4) and 1 mM NADPH. For CYP1A2 inhibition study, incubations are performed in a total volume of 0.5 ml, in duplicates with 0.1 mg/ml HLM, 30 μM phenacetin, 1 mM NADPH, and in the presence of avasimibe (0, 0.3, 0.75, 1.5, 3, 7.5, 15, 30, and 40 μM in 50 mM) in a potassium phosphate buffer at pH 7.4. After preincubation at 37 °C for 7 min, NADPH is added to initiate the enzyme reaction. The reaction mixture is quenched with 500 μl of ice-cold 100 ng/ml paracetamol-D4/CH3CN after 25 min. The standards (4-acetamidophenol, singlet) and quality controls (triplicates for low, medium, and high) are prepared at room temperature. After mixing, 0.2 ml of the samples is transferred to another plate and submitted for LC/MS/MS analysis after centrifugation at 3000 rpm for 10 min. A Supelco Discovery Amide C16, 100 × 2.1 mm (5-μm particle size) column (Supelco, Bellefonte, PA) is used. The mobile phase is isocratic, 40:60 [acetonitrile/formic acid, 0.1% (v/v)] at 0.2 ml/min.
-  Lee HT, et al. J Med Chem, 1996, 39(26), 5031-5034.
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|In vitro||DMSO||100 mg/mL (199.31 mM)|
|Ethanol||8 mg/mL (15.94 mM)|
|In vivo||Add solvents to the product individually and in order:
2% DMSO+corn oil
For best results, use promptly after mixing.
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Frequently Asked Questions
I'd like to have more information about the in vivo administration of avasimibe in monkeys?
S2187 can be dissolved in 2% DMSO+corn oil at 5mg/ml clearly, and in 0.5% CMC Na+1% Tween 80 at 10mg/ml as a suspension.
We want to use it for mice study by IP injection. I was wondering if you have any suggestions how to make a soluble solution for IP injection?
S2187 Avasimibe can be dissolved in 5% DMSO+30% PEG 300+5% Tween 80+ddH2O at 1 mg/ml as a clear solution. When preparing the solution, please dissolve the compound in DMSO clearly first, then add PEG and Tween. After they mixed well, then dilute with water. And we found after stayed for about 20min, the precipitation will go out. So please prepare the solution just before use.