For research use only.
CAS No. 410536-97-9
Sirtinol is a specific SIRT1 and SIRT2 inhibitor with IC50 of 131 μM and 38 μM in cell-free assays, respectively.
Selleck's Sirtinol has been cited by 28 publications
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Choose Selective Sirtuin Inhibitors
|Description||Sirtinol is a specific SIRT1 and SIRT2 inhibitor with IC50 of 131 μM and 38 μM in cell-free assays, respectively.|
|Features||Sirtinol does not inhibit class I and class II HDACs.|
Sirtinol potently inhibits recombinant yeast Sir2p activity in vitro with IC50 of 68 μM. Unlike TSA, Sirtinol has shown no effect on human HDAC1, indicating that it is a selective sirtuin inhibitor. Unlike TSA, treatment of human primary fibroblasts with Sirtinol does not cause global changes in acetylation of histones and tubulin, nor does it induce a morphological change in the HeLa tumor cell line.  Sirtinol treatment at 100 μM for 24 hours causes a sustained growth arrest in MCF-7 and H1299 cells for up to 9 days after Sirtinol withdrawal. Sirtinol treatment induces increased SA-β-gal activity and expression of PAI-1 in both MCF-7 and H1299 cells, more potently than Splitomicin. Sirtinol inhibits colony formation at concentrations of 33 μM and higher in MCF-7 and H1299 cells, more effectively compared with Splitomicin. Sirtinol treatment (100 μM) significantly attenuates both basal and EGF- or IGF-I-stimulated phosphorylation of ERK, JNK/SAPK and p38 MAPK in MCF-7 and H1299 cells. Sirtinol blocks the basal and EGF-stimulated activation of Ras. Consistent, basal and EGF- or IGF-I-stimulated phosphorylation of Raf-1, MEK, SEK1/MKK4 and MKK7 is attenuated in Sirtinol-treated cells.  Inhibition of Sirt1 by Sirtinol enhances UV- and H2O2-induced p53 acetylation to enhance cell death in cultured skin keratinocytes.  Blocking of Sirt1 by Sirtinol treatment results in a significant inhibition in the growth and viability of human PCa cells while having no effect on normal prostate epithelial cells. 
|In vivo||Administration of Sirtinol at 1 mg/kg attenuates pro-inflammatory cytokine production and protects against hepatic injury following trauma-hemorrhage in male Sprague-Dawley rats. |
Inhibition in vitro of human Sirt2 activity:1.5 μg of recombinant human GST-Sirt2 (amino acids 18-340) are incubated at 30°C for 2 hours in 50 μL of assay buffer (50 mM Tris-HCl, pH 8.8, 4 mM MgCl2, 0.2 mM dithiothreitol with different concentrations of Sirtinol, 50 μM NAD, and tritiated acetylated HeLa histones (1000 cpm), purified by acid extraction. HDAC activity is determined by scintillation counting of the ethyl acetate-soluble [3H]acetic acid.
-  Grozinger CM, et al. J Biol Chem, 2001, 276(42), 38837-38843.
-  Mai A, et al. J Med Chem, 2005, 48(24), 7789-7795.
-  Ota H, et al. Oncogene, 2006, 25(2), 176-185.
-  Liu FC, et al. Acta Anaesthesiol Scand, 2008, 52(5), 635-640.
-  Kojima K, et al. Biochem Biophys Res Commun, 2008, 373(3), 423-428.
-  Cao C, et al. J Cell Mol Med, 2009, 13(9B), 3632-3643.
-  Jung-Hynes B, et al. J Biol Chem, 2009, 284(6), 3823-3832.
-  Sun JY, et al. Clin Lymphoma Myeloma Leuk, 2011, 11(1), 152-156.
|In vitro||DMSO||23 mg/mL (58.3 mM)|
|In vivo||Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+5% Tween 80+ddH2O
For best results, use promptly after mixing.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
In vivo Formulation Calculator (Clear solution)
|Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)|
|Dosage||mg/kg||Average weight of animals||g||Dosing volume per animal||ul||Number of animals|
|Step 2: Enter the in vivo formulation ()|
|% DMSO % % Tween 80 % ddH2O|
Working concentration： mg/ml；
Method for preparing DMSO master liquid: ： mg drug pre-dissolved in μL DMSO (Master liquid concentration mg/mL，)
Method for preparing in vivo formulation：Take μL DMSO master liquid, next addμL PEG300， mix and clarify, next addμL Tween 80，mix and clarify, next add μL ddH2O，mix and clarify.
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