Catalog No.S2475 Synonyms: CGP057148B, ST-1571
Molecular Weight(MW): 493.6
Imatinib (STI571) is a multi-target inhibitor of tyrosine kinase with inhibition for v-Abl, c-Kit and PDGFR, IC50 values are 0.6 μM, 0.1 μM and 0.1 μM in cell-free or cell-based assays, respectively.
Cited by 35 Publications
6 Customer Reviews
Ba/F3-p210T315I cells were treated with indicated concentrations of imatinib with or without PDMP for 24 h. Apoptosis was determined as in A. Data are shown as percentage of sub-G1 for apoptosis in triplicate cultures. *P<0.05.
FASEB J 2011 25, 3661-3673. Imatinib (STI571) purchased from Selleck.
Inhibition of thymidine (a and b) and cytarabine (c and d) uptake with imatinib. K562 cells (a and c) and MEG-01 cells (b and d) were incubated at 37 ◦C for 15 min with imatinib transport buffer, and then incubated with 0.5 Ci of [3H] thymidine or [3H] cytarabine for an additional 5 min in presence of imatinib. Cells were then washed 3 times, lysed and radioactivity associated to cell pellets was quantified. DMSO, dimethylsulfoxide; DPD, dipyridamole.
Leukemia Res 2012 36, 1311-1314. Imatinib (STI571) purchased from Selleck.
ZFX regulates imatinib sensitivity and PI3K/Akt signaling pathway in CML cells. Viability of cells transfected with si-ZFX at the indicated doses of imatinib for 24 h (a). Colonies of leukemia cells and imatinib-resistant cells transfected with si-ZFX following treatment with imatinib for 10 days (b). Western blot analysis of Akt, p-Akt, CyclinD1, CyclinE1, Bcl-2, and Caspase-3 in K562 and K562/G01 cells transfected with si-ZFX for 2 days (c). The relative densities of proteins were quantified and normalized to b-Actin (d). Values represented the mean ± SD data from experiments in triplicate. *P\0.05 and **P\0.01
Cell Biochem Biophys, 2016, 74(2):277-83. Imatinib (STI571) purchased from Selleck.
Cell Viability assay results. A2C12, BetaD5, GammaA3, GammaD12, A549, CaCo2, HepG2 cell lines were treated with imatinib mesylate for 24h and 96h.
Dr. Thomas Kruwel of Fraunhofer. Imatinib (STI571) purchased from Selleck.
A. Viability curve for the c-Kit mutant MelMS melanoma cell line treated with increasing concentrations of imatinib for 72h (relative to DMSO-treated controls; mean ±sd; n=3) B. MelMS melanoma cells were treated with 50nM imatinib for 24h. The effects on c-Kit, ERK and AKT activation were determined by immunoblotting.
Dr. Helen Rizos from the university of Sydney. Imatinib (STI571) purchased from Selleck.
Purity & Quality Control
Choose Selective PDGFR Inhibitors
|Description||Imatinib (STI571) is a multi-target inhibitor of tyrosine kinase with inhibition for v-Abl, c-Kit and PDGFR, IC50 values are 0.6 μM, 0.1 μM and 0.1 μM in cell-free or cell-based assays, respectively.|
In vitro assays for inhibition of a panel of tyrosine and serine/threonine protein kinases show that Imatinib inhibits the v-Abl tyrosine kinase and PDGFR potently with an IC50 of 0.6 and 0.1 μM, respectively.  Imatinib inhibits the SLF-dependent activation of wild-type c-kit kinase activity with a IC50 for these effects of approximately 0.1 μM, which is similar to the concentration required for inhibition of PDGFR.  Imatinib exhibits growth-inhibitory activity on the human bronchial carcinoid cell line NCI-H727 and the human pancreatic carcinoid cell line BON-1 with an IC50 of 32.4 and 32.8 μM, respectively.  A recent study shows that Imatinib has the potential to exert its antileukemia effects in chronic myelogenous leukemia by down-regulating hERG1 K(+) channels, which are highly expressed in leukemia cells and appear of exceptional importance in favoring leukemogenesis. 
|In vivo||Imatinib produces a different antitumor effect on three xenografted tumors derived from surgical samples of fresh human small cell lung cancers, with 80%, 40% and 78% growth inhibition of SCLC6, SCLC61 and SCLC108 tumors, respectively, and no significant inhibition of SCLC74 growth.  In high fat fed ApoE(-/-) mice, Imatinib significantly reduces the high fat-induced lipid staining area by 30%, 27% and 35% compared to high-fat diet untreated controls when dosed by gavage at 10, 20 and 40 mg/kg, respectively, and suppresses carotid artery lipid accumulation. |
PDGF receptor kinase activity:PDGF receptor is immunoprecipitated from BALB/c 3T3 cell extracts with rabbit antiserum to the murine PDGF receptor for 2 hours on ice. Protein A-Sepharose beads are used to collect the antigen-antibody complexes. The immunoprecipitates are washed twice with TNET (50 mM Tris, pH 7.5, 140 mM NaCl, 5 mM EDTA, 1% Triton X-100), once with TNE (50 mM Tris, pH 7.5, 140 mM EDTA), and once with kinase buffer (20 mM Tris, pH 7.5,10 mM MgCl2). After stimulation with PDGF (50 ng/mL) for 10 minutes at 4 °C, different concentrations of drug are added to the reaction mixture. PDGF receptor kinase activity is determined by incubation with 10 μCi [7-33P]-ATP and l μM ATP for 10 minutes at 4 °C. Immune complexes are separated by SDS-PAGE on 7.5% gels.
-  Buchdunger E, et al. Proc Natl Acad Sci USA. 1995, 92(7), 2558–2562.
-  Heinrich MC, et al. Blood. 2000, 96(3), 925-932.
-  Yao JC, et al. Clin Cancer Res. 2007, 13(1), 234-240.
|In vitro||DMSO||33 mg/mL (66.85 mM)|
|In vivo||Add solvents to the product individually and in order:
2% DMSO+30% PEG 300+2% 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.
Calculate the mass, volume or concentration required for a solution. The Selleck molarity calculator is based on the following equation:
Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)
*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and MSDS / COA (available on product pages).
Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )
* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).
Molecular Weight Calculator
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Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT00044304||Recruiting||Hypereosinophilic Syndrome||National Institute of Allergy and Infectious Diseases (NIAID)|National Institutes of Health Clinical Center (CC)||August 22, 2002||Phase 2|
|NCT02644525||Not yet recruiting||Loaisis||National Institute of Allergy and Infectious Diseases (NIAID)|National Institutes of Health Clinical Center (CC)||December 21, 2015||Phase 2|
|NCT03007147||Not yet recruiting||B Acute Lymphoblastic Leukemia With t(9;22)(q34.1;q11.2); BCR-ABL1|BCR-ABL1 Fusion Protein Expression|Minimal Residual Disease|Philadelphia Chromosome Positive|T Acute Lymphoblastic Leukemia|Untreated Adult Acute Lymphoblastic Leukemia|Untreated Childhood Acute Lymphoblastic Leukemia||Childrens Oncology Group|National Cancer Institute (NCI)||July 2017||Phase 3|
|NCT03023046||Not yet recruiting||Adult Acute Lymphoblastic Leukemia|Adult Lymphoblastic Lymphoma|CD20 Positive|Philadelphia Chromosome Positive||University of Washington|National Cancer Institute (NCI)||February 2017||Phase 2|
|NCT02538926||Not yet recruiting||B Acute Lymphoblastic Leukemia|B Lymphoblastic Lymphoma|Recurrent Adult Acute Lymphoblastic Leukemia|Recurrent B Lymphoblastic Lymphoma|Recurrent T Lymphoblastic Leukemia/Lymphoma|Refractory B Lymphoblastic Lymphoma|Refractory T Lymphoblastic Lymphoma|T Acute Lymphoblastic Leukemia|T Lymphoblastic Lymphoma||University of Washington|National Cancer Institute (NCI)||January 2017||Phase 2|
|NCT02924714||Recruiting||Gastrointestinal Stromal Tumor||Oslo University Hospital||January 2017||Phase 2|
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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Frequently Asked Questions
Could you please advise whether it is a clear solution for compound dissolved in vehicle 2% DMSO+30% PEG 300+2% Tween 80+ddH2O?
For S2475 Imatinib (STI571), it is soluble in 2% DMSO+30% PEG 300+2% Tween 80+ddH2O at 2mg/ml. When making the solution, please dissolve the compound in DMSO clearly first. If it dissolves not readily, please sonicate and warm it in water bath at 45-50C. Then add PEG and Tween. After they mixed well, dilute with water.
What is the difference between S2475 (Imatinib) and S1026 (Imatinib Mesylate)? Are they water soluble?
S2475 is free base of Imatinib while S1026 is a solt form of Imatinib. They have exactly the same biological activity but different solubility. S1026 can be dissolved in water, but S2475 is not soluble in water. S2475 can be dissolved in DMSO at up to 3mg/ml.