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.
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|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|
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