Catalog No.S1043 Synonyms: CT 53518, NSC726292, MLN518
Molecular Weight(MW): 562.7
Tandutinib (MLN518, CT53518) is a potent FLT3 antagonist with IC50 of 0.22 μM, also inhibits PDGFR and c-Kit, 15 to 20-fold higher potency for FLT3 versus CSF-1R and >100-fold selectivity for the same target versus FGFR, EGFR and KDR. Phase 2.
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A representative experiment for tandutinib is shown. A: The control group after 0 h. B: The control group after 24 h. C: Treatment with 0.125 ug/ml tandutinib. D: Treatment with 0.25 ug/ml tandutinib. E: Treatment with 0.5 ug/ml tandutinib. F: + Treatment with 1 ug/ml tandutinib. G: Treatment with 2 ug/ml tandutinib. H: Treatment with 5 ug/ml tandutinib. I: Treatment with 10 ug/ml tandutinib. (B) + (C) *, P < 0.05, compared with the respective uninhibited cells. The bars represent the mean ?SD.
Br J Cancer 2012 107, 1702-13. Tandutinib (MLN518) purchased from Selleck.
Purity & Quality Control
Choose Selective FLT3 Inhibitors
|Description||Tandutinib (MLN518, CT53518) is a potent FLT3 antagonist with IC50 of 0.22 μM, also inhibits PDGFR and c-Kit, 15 to 20-fold higher potency for FLT3 versus CSF-1R and >100-fold selectivity for the same target versus FGFR, EGFR and KDR. Phase 2.|
Tandutinib has little activity against EGFR, FGFR, KDR, InsR, Src, Abl, PKC, PKA and MAPKs. Tandutinib inhibits IL-3-independent cell growth and FLT3-ITD autophosphorylation with an IC50 of 10-100 nM. Tandutinib also inhibits the proliferation of human leukemia Ba/F3 cells containing FLT3-ITD mutations with IC50 values of 10-30 nM, and the FLT3-ITD-positive Molm-13 and Molm-14 cells with an IC50 of 10 nM. In FLT3-ITD-positive Molm-14 cells but not the FLT3-ITD-negative THP-1 cells, Tandutinib treatment leads to significant apoptosis by 51% and 78% at 24 and 96 hours, respectively, due to specific FLT3 inhibition.  Tandutinib preferentially inhibits the growth of blast colonies from FLT3 ITD-positive compared with ITD-negative patients with AML, without affecting colony formation by normal human progenitor cells. 
|In vivo||Oral administration of Tandutinib at 60 mg/kg bid significantly increases the survival in mice bearing Ba/F3 cells expressing W51 FLT3-ITD mutant, and gives a significant reduction in mortality in a mouse bone marrow transplantation model.  Tandutinib treatment at 180 mg/kg twice daily has mild toxicity toward normal hematopoiesis, however, it is a dose at which Tandutinib is effective in treating FLT3 ITD-positive leukemia in mice. |
Cell based receptor autophosphorylation assays:Autophosphorylation of PDGFR family kinase assays are cell-based enzyme-linked immunosorbent (ELISA) assays using CHO cells expressing wild-type PDGFRβ, chimeric protein PDGFRβ/c-Kit, and PDGFRβ/Flt3 which contain the extracellular and transmembrane domains of PDGFRβ and the cytoplasmic domain of c-Kit, and Flt-3. Cells are grown to confluency in 96-well microtiter plates under standard tissue culture conditions, followed by serum starvation for 16 hours. Briefly, quiescent cells are incubated at 37 °C with increasing concentrations of Tandutinib for 30 minutes followed by the addition of 8 nM PDGF-BB for 10 minutes. Cells are lysed in 100 mM Tris, pH 7.5, 750 mM NaCl, 0.5% Triton X-100, 10 mM sodium pyrophosphate, 50 mM NaF, 10 μg/mL aprotinin, 10 μg/mL leupeptin, 1 mM phenylmethylsulfonyl fluoride, 1 mM sodium vanadate, and the lysate is cleared by centrifugation at 15,000g for 5 minutes. Clarified lysates are transferred into a second microtiter plate in which the wells are previously coated with 500 ng/well of 1B5B11 anti-PDGFRβ mAb and then incubated for 2 hours at room temperature. After washing three times with binding buffer (0.3% gelatin, 25 mM HEPES, pH 7.5, 100 mM NaCl, 0.01% Tween 20), 250 ng/mL of rabbit polyclonal anti-phosphotyrosine antibody is added and plates are incubated at 37 °C for 60 minutes. Subsequently, each well is washed three times with binding buffer and incubated with 1 μg/mL of horseradish peroxidase-conjugated anti-rabbit antibody at 37 °C for 60 minutes. Wells are washed prior to adding 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid), and the rate of substrate formation is monitored at 650 nm.
|In vitro||Ethanol||6 mg/mL (10.66 mM)|
|DMSO||5 mg/mL (8.88 mM)|
|In vivo||0.5% methylcellulose||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||CT 53518, NSC726292, MLN518|
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Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT00904852||Withdrawn||Glioblastoma Multiforme||Millennium Pharmaceuticals, Inc.||June 2009||Phase 1|
|NCT00667394||Completed||Glioblastoma|Gliosarcoma|Anaplastic Astrocytoma|Anaplastic Oligodendroglioma|Anaplastic Mixed Oligoastrocytoma||National Cancer Institute (NCI)|National Institutes of Health Clinical Center (CC)||April 2008||Phase 2|
|NCT00379080||Completed||Adult Brain Tumor|Adult Giant Cell Glioblastoma|Adult Glioblastoma|Adult Gliosarcoma|Recurrent Adult Brain Tumor||National Cancer Institute (NCI)||January 2007||Phase 1|Phase 2|
|NCT00408902||Completed||Clear Cell Renal Cell Carcinoma|Recurrent Renal Cell Cancer|Stage IV Renal Cell Cancer||National Cancer Institute (NCI)||November 2006||Phase 2|
|NCT00390468||Completed||Metastatic Cancer|Pain|Prostate Cancer||National Cancer Institute (NCI)||October 2006||Phase 2|
|NCT00274248||Completed||Acute Myelogenous Leukemia||Millennium Pharmaceuticals, Inc.||March 2005||Phase 1|
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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