Imatinib Mesylate (STI571)
Catalog No.S1026 Synonyms: CGP-57148B, ST-1571 Mesylate
Molecular Weight(MW): 589.71
Imatinib Mesylate (STI571) is an orally bioavailability mesylate salt of Imatinib, which 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.
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THOC5 phospho-Y225 levels were assessed in the populations shown by flow cytometry following 24 h treatment with 5 μM imatinib, 150 nM dasatinib or 5 μM nilotinib. Results are displayed as mean fluorescence intensity (n= 4) ±s.e.m.
Leukemia 2013 27, 932-40. Imatinib Mesylate (STI571) purchased from Selleck.
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 Mesylate (STI571) purchased from Selleck.
Inhibition of ER stress response protects against CBD-induced cell death. (b) LX-2 cells were treated with 5 μM CBD in serum-free media for 8 h in the presence or absence of 10 μM imatinib to inhibit ER stress. Expression of PARP, CHOP, and phospho-JNK was determined by western blot analysis and is presented as fold over vehicle.E.M. for n = four independent experiments. (c) Acid phosphatase activity was used to measure LX-2 cell viability following treatment with CBD and imatinib as in (b).
Cell death dis 2011 2, e170. Imatinib Mesylate (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 Mesylate (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.
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|Description||Imatinib Mesylate (STI571) is an orally bioavailability mesylate salt of Imatinib, which 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||118 mg/mL (200.09 mM)|
|Water||118 mg/mL (200.09 mM)|
|In vivo||Saline||30 mg/mL|
* 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.
|Synonyms||CGP-57148B, ST-1571 Mesylate|
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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|
|NCT02812693||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||November 2016||Phase 1|Phase 2|
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