Catalog No.S2475 Synonyms: CGP057148B, ST-1571
Molecular Weight(MW): 493.6
Imatinib (STI571) is a multi-target inhibitor of v-Abl, c-Kit and PDGFR with IC50 of 0.6 μM, 0.1 μM and 0.1 μM in cell-free or cell-based assays, respectively.
Cited by 33 Publications
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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.
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.
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2. For more details, such as half maximal inhibitory concentrations (IC50s) and working concentrations of each inhibitor, please click on the link of the inhibitor of interest.
3. "+" indicates inhibitory effect. Increased inhibition is marked by a higher "+" designation.
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|Description||Imatinib (STI571) is a multi-target inhibitor of v-Abl, c-Kit and PDGFR with IC50 of 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||4 mg/mL (8.1 mM)|
* 1 mg/ml means slightly soluble or insoluble.
* 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.
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Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT02709083||Not yet recruiting||Chronic Myelogenous Leukemia|Chronic Myeloid Leukemia|Leukemia||Emory University||December 2016||Phase 2|
|NCT02812693||Not yet recruiting||Stage IIIA Skin Melanoma|Stage IIIB Skin Melanoma|Stage IIIC Skin Melanoma|Stage IV Skin Melanoma||Joanne Jeter|National Cancer Institute (NCI)|Merck Ltd.|Ohio State University Comprehensive Cancer Center||September 2016||Phase 1|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)||August 2016||Phase 2|
|NCT02685046||Recruiting||Colonic Neoplasms||UMC Utrecht|Meander Medical Center|Erasmus Medical Center|Hubrecht Institute||April 2016||Phase 2|
|NCT02611492||Recruiting||Philadelphia Chromosome Positive Adult Acute Lymphoblastic Leukemia||Assistance Publique - Hôpitaux de Paris||April 2016||Phase 3|
|NCT02602314||Not yet recruiting||Chronyc Myeloid Leukemia||Gruppo Italiano Malattie EMatologiche dellAdulto||March 2016||Phase 4|
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Frequently Asked Questions
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.