Tandutinib (MLN518)

Catalog No.S1043

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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Tandutinib (MLN518) Chemical Structure

Tandutinib (MLN518) Chemical Structure
Molecular Weight: 562.7

Validation & Quality Control

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Product Information

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    Combination Therapy

Product Description

Biological Activity

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.
Targets c-Kit [1] PDGFRβ [1] FLT3 [1] CSF-1R [1]

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IC50 0.17 μM 0.20 μM 0.22 μM 3.43 μM
In vitro 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. [1] 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. [2]
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. [1] 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. [2]

Protocol(Only for Reference)

Kinase Assay: [1]

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.

Cell Assay: [1]

Cell lines Ba/F3, Molm-13, Molm-14, HL60, AML193, KG-1, KG-1a, THP-1, and RS4;11
Concentrations Dissolved in DMSO, final concentrations ~30 μM
Incubation Time ~7 days
Method Cells are exposed to increasing concentrations of Tandutinib (0.004-30 μM). Cells are grown for 3-7 days in tissue culture, and viable cells, determined by Trypan blue dye exclusion, are counted. At daily intervals, cells are harvested, washed, and resuspended in 100 uL binding buffer containing 10 mM HEPES (pH 7.4), 140 mM NaCl, and 2.5 mM CaCl2. Annexin V-FITC (100 ng) and propidium iodide (250 ng) are added to the cell suspension followed by incubation at room temperature for 15 minutes. Flow cytometry is performed immediately after staining on a FACSort flow cytometer with excitation at 488 nm. Fluorescence of annexin V-FITC and DNA propidium iodide staining are measured at 515 nm and 585 nm, respectively.

Animal Study: [1]

Animal Models Female athymic nude (nu/nu) mice injected with Ba/F3 cells expressing W51 FLT3-ITD mutant
Formulation Suspended in a 0.5% methylcellulose (MC) in water solution
Dosages 40-120 mg/kg/day
Administration Orally by gavage

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)


[1] Kelly LM, et al. Cancer Cell, 2002, 1(5), 421-432.

[2] Griswold IJ, et al. Blood, 2004, 104(9), 2912-2918.

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Clinical Trial Information( data from http://clinicaltrials.gov, updated on 2016-07-23)

NCT Number Recruitment Conditions Sponsor
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 He  ...more 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

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Chemical Information

Download Tandutinib (MLN518) SDF
Molecular Weight (MW) 562.7


CAS No. 387867-13-2
Storage 3 years -20℃powder
6 months-80℃in solvent
Synonyms CT 53518, NSC726292, MLN518
Solubility (25°C) * In vitro DMSO 5 mg/mL (8.88 mM)
Ethanol 6 mg/mL (10.66 mM)
Water <1 mg/mL (<1 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.
Chemical Name N-(4-isopropoxyphenyl)-4-(6-methoxy-7-(3-(piperidin-1-yl)propoxy)quinazolin-4-yl)piperazine-1-carboxamide

Customer Product Validation(2)

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Source Br J Cancer 2012 107, 1702-13. Tandutinib (MLN518) purchased from Selleck
Method GAP assay
Cell Lines Primary meningioma cells
Concentrations 0, 0.125, 0.25, 0.5, 1, 2, 5, 10 uM
Incubation Time 24 h
Results With increasing doses of tandutinib (B-I), meningioma cells became unable to close the uncoated gap in 24 h. B shows the dose-dependent inhibition of cell migration by meningiomas following incubation with different concentration of tandutinib. Migration was suppressed by 50% on average with 2 ug/ml tandutinib.

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Source Eur J Pharm Sci 2013 49(3), 441-50. Tandutinib (MLN518) purchased from Selleck
Method flow cytometry
Cell Lines S1 and S1-M1-80 cells
Concentrations 0.75, 1.5 and 3.0 uM
Incubation Time 3 h
Results Doxorubicin accumulation was signicantly higher (6.7-fold) in S1 cells than inS1-M1-80 cells, and tandutinib increased doxorubicin accumulation in S1-M1-80 cells in a dose dependent manner(A), Similarly, rhodamine 123 accumulation was also increased in S1-M1-80 cells by 1.5-, 1.9- and 2.9-fold,respectively(B).

Tech Support

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