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Bafetinib (INNO-406; NS187)

Alias: INNO-406; INNO 406; NS187; NS187; INNO406;NS-187; NS 187
Cat No.:V0679 Purity: ≥98%
Bafetinib (formerly INNO406; NS-187),an investigational anticancer drug originally developed by Nippon Shinyaku and later licensed to CytRx, is an orally bioavailable dual Bcr-Abl/Lyn inhibitor with potential antineoplastic activity.
Bafetinib (INNO-406; NS187)
Bafetinib (INNO-406; NS187) Chemical Structure CAS No.: 859212-16-1
Product category: Bcr-Abl
This product is for research use only, not for human use. We do not sell to patients.
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Other Forms of Bafetinib (INNO-406; NS187):

  • Lyn-IN-1
Official Supplier of:
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Bafetinib (formerly INNO406; NS-187), an investigational anticancer drug originally developed by Nippon Shinyaku and later licensed to CytRx, is an orally bioavailable dual Bcr-Abl/Lyn inhibitor with potential antineoplastic activity. It inhibits Bcr-Abl/Lyn with IC50s of 5.8 nM/19 nM in cell-free assays. In Bcr-Abl–positive KU812 mouse model, Bafetinib significantly inhibited tumor growth, and completely inhibited tumor growth without causing adverse effects at a dose of 20 mg/kg/day.

Biological Activity I Assay Protocols (From Reference)
ln Vitro

In vitro activity: Bafetinib blocks WT Bcr-Abl autophosphorylation and its downstream kinase activity with IC50 of 11 nM and 22 nM in K562 and 293T cells, respectively. Bafetinib suppresses the growth of the Bcr-Abl-positive cell lines including K562, KU812, and BaF3/wt cells potently without effects on the proliferation of the Bcr-Abl-negative U937 cell line. Moreover, Bafetinib exhibits a dose-dependent antiproliferative effect against Bcr-Abl point mutant cell lines, such as BaF3/E255K cells. In Bcr-Abl+ leukemia cell lines, Bafetinib induces both caspase-mediated and caspase-independent cell death by blocking the phosphorylation of Bcr-Abl.


Kinase Assay: Bcr-Abl kinase assays are performed in 25 μL of reaction mixture containing 250 μM peptide substrate, 740 Bq/μL [γ-33P]ATP, and 20 μM cold adenosine triphosphate (ATP) by using the SignaTECT protein tyrosine kinase assay system. Each Bcr-Abl kinase is used at a concentration of 10 nM. Kinase assays for Abl, Src, and Lyn are carried out with an enzyme-linked immunosorbent assay (ELISA) kit. The inhibitory effects of NS-187 against 79 tyrosine kinases are tested with KinaseProfiler.


Cell Assay: K562, BaF3/wt, BaF3/E255K, and BaF3/T315I cells are plated at 1 × 103 in 96-well plates, whereas KU812 and U937 cells are plated at 5 × 103in 96-well plates. Cells are incubated with serial dilutions of Bafetinib for 3 days. Cell proliferation is measured by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide; Nacalai Tesque) assay, and the 50% inhibitory concentration (IC50) values are calculated by fitting the data to a logistic curve.

ln Vivo
In Bcr-Abl–positive KU812 mouse model, Bafetinib (0.2 mg/kg/day) significantly inhibits tumor growth, and completely inhibits tumor growth without adverse effects at 20 mg/kg/day. For Balb/c mice, Bafetinib shows maximal tolerated dose of 200 mg/kg/d and bioavailability value (BA) of 32%. In a Central nervous system (CNS) leukemia model bearing Ba/F3/wt bcr-ablGFP, Ba/F3/Q252H, or Ba/F3/M351T cells, combination treatment of Bafetinib (60 mg/kg) and cyclosporine A (CsA) (50 mg/kg) leads to more significant inhibition of leukemia growth in the brain than either Bafetinib or CsA alone.
Animal Protocol
Bafetinib is dissolved in 0.5% methylcellulose; ≤20 mg/kg/day; p.o.
KU812 xenograft is established by subcutaneous injection of KU812 cells into the right flank of Balb/c-nu/nu female mice.
References
Blood.2005 Dec 1;106(12):3948-54;Blood.2007 Jan 1;109(1):306-14.
Additional Infomation
Bafetinib is a biaryl.
Bafetinib has been used in trials studying the treatment of Adult Gliosarcoma, Adult Mixed Glioma, Adult Glioblastoma, Chronic Myeloid Leukemia, and Acute Lymphocytic Leukemia, among others.
Bafetinib is an orally active 2-phenylaminopyrimidine derivative with potential antineoplastic activity. INNO-406 specifically binds to and inhibits the Bcr/Abl fusion protein tyrosine kinase, an abnormal enzyme produced by Philadelphia chromosomal translocation associated with chronic myeloid leukemia (CML). Furthermore, this agent also inhibits the Src-family member Lyn tyrosine kinase, upregulated in imatinib-resistant CML cells and in a variety of solid cancer cell types. The inhibitory effect of INNO-406 on these specific tyrosine kinases decreases cellular proliferation and induces apoptosis. A high percentage of CML patients are refractory to imatinib, which sometimes results from point mutations occurring in the kinase domain of the Bcr/Abl fusion product. Due to its dual inhibitory activity, INNO-406 has been shown to overcome this particular drug resistance and to be a potent and effective agent in the treatment of imatinib-resistant CML.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C30H31F3N8O
Molecular Weight
576.62
Exact Mass
576.257
CAS #
859212-16-1
Related CAS #
859212-16-1;887650-05-7;
PubChem CID
11387605
Appearance
Light yellow to yellow solid powder
Density
1.4±0.1 g/cm3
Melting Point
166-168°C
Index of Refraction
1.640
LogP
3.03
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
11
Rotatable Bond Count
8
Heavy Atom Count
42
Complexity
872
Defined Atom Stereocenter Count
1
SMILES
CC1=C(C=C(C=C1)NC(=O)C2=CC(=C(C=C2)CN3CC[C@@H](C3)N(C)C)C(F)(F)F)NC4=NC=CC(=N4)C5=CN=CN=C5
InChi Key
ZGBAJMQHJDFTQJ-DEOSSOPVSA-N
InChi Code
InChI=1S/C30H31F3N8O/c1-19-4-7-23(13-27(19)39-29-36-10-8-26(38-29)22-14-34-18-35-15-22)37-28(42)20-5-6-21(25(12-20)30(31,32)33)16-41-11-9-24(17-41)40(2)3/h4-8,10,12-15,18,24H,9,11,16-17H2,1-3H3,(H,37,42)(H,36,38,39)/t24-/m0/s1
Chemical Name
(S)-N-(3-([4,5'-bipyrimidin]-2-ylamino)-4-methylphenyl)-4-((3-(dimethylamino)pyrrolidin-1-yl)methyl)-3-(trifluoromethyl)benzamide
Synonyms
INNO-406; INNO 406; NS187; NS187; INNO406;NS-187; NS 187
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: 100 mg/mL (173.4 mM)
Water:<1 mg/mL
Ethanol:<1 mg/mL
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (4.34 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (4.34 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

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Solubility in Formulation 3: 0.5% methylcellulose+0.2% Tween 80: 30 mg/mL


 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.7342 mL 8.6712 mL 17.3424 mL
5 mM 0.3468 mL 1.7342 mL 3.4685 mL
10 mM 0.1734 mL 0.8671 mL 1.7342 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Clinical Trial Information
NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT01215799 Completed Drug: Bafetinib Hormone Refractory Prostate Cancer CytRx August 2010 Phase 2
NCT01144260 Completed Drug: bafetinib B-Cell Chronic Lymphocytic Leukemia CytRx June 2010 Phase 2
NCT01234740 Completed Drug: bafetinib
Procedure: microdialysis
Adult Anaplastic Astrocytoma
Adult Anaplastic Ependymoma
City of Hope Medical Center December 2010 Phase 1
NCT00352677 Completed Drug: INNO-406 Chronic Myeloid Leukemia
Acute Lymphocytic Leukemia
CytRx July 2006 Phase 1
Biological Data
  • The tyrosine kinase inhibitor bafetinib blocks PAR2-TRPV4 coupling. (A) Bafetinib (1–10 μM) concentration dependently inhibited the sustained [Ca2+]i response to SLIGRL (30 μM), without affecting the peak response to SLIGRL or GSK1016790A (GSK, 30 nM). (B) Analysis showing concentration-dependent inhibition of the SLIGRL-induced coupling response with bafetinib in the TRPV4-transfected HEK293 cells. (C) 10 μM bafetinib inhibited the sustained [Ca2+]i response to trypsin, but did not affect the peak response to trypsin or the response to GSK1016790A. (D) 10 μM bafetinib inhibited trypsin-induced coupling in TRPV4 HEK cells compared with vehicle-treated (Veh) controls. Data are presented as mean ± SEM of n = 6–7 experiments.*P < 0.05, significantly different from NT HEK control. #P < 0.05, significantly different from vehicle-treated TRPV4 HEK control.
  • Bafetinib inhibits the expression of PD-L1 in vivo. (A) Tumor image of Balb/c mice treated with or without Bafetinib (30 mg/kg daily). (B) Tumor volume of Balb/c mice treated with or without Bafetinib (30 mg/kg daily). (C) The body weights of Balb/c mice were measured every other day. (D) Expression of PD-L1 in tumors of Balb/c mice. The relative protein level of PD-L1 in CT26 was quantitatively analyzed below. (E) Tumor volume of immunodeficient nude mice treated with or without Bafetinib (30 mg/kg daily). (F) The body weights of immunodeficient nude mice. (G) Expression of PD-L1 in tumors of immunodeficient nude mice. The relative protein level of PD-L1 in CT26 was quantitatively analyzed below. Bars, mean ± SEM (n = 6). *, p < 0.05. n. s: not significant. (H) H292 cells were treated with control Bafetinib (2.5 μM) or anti-PD-L1. T cells were isolated from peripheral blood and stimulated via anti-CD3/CD28/CD2. Co-incubation was carried out with these treated H292 cells for 8–12 h (T cells: Tumor cells = 5:1). After incubation, surviving cells were then fixed and stained with crystal violet. Sacle bar: 300 μm.
  • Bafetinib inhibits the expression of PD-L1 in lung cancer. (A) Screening on H292 cells treated with different small molecule drugs (10 μM) for 24 h. (B) The expression of PD-L1 protein was measured by Western blot in H292 cells, which were treated with Bafetinib (0.625, 1.25, and 2.5 μM) for 24 h. The relative protein level of PD-L1 in H292 was quantitatively analyzed on the right. (C) Expression of B7-H3, Galectin-9, PD-L1, and CD47 was measured by Western blot in H292 cells when treated with Bafetinib (2.5 μM) for 24 h (D, E) The expression of PD-L1 protein was measured by Western blot in H460, H358, PC9 cells, and primary lung cancer when treated with Bafetinib (0.625, 1.25, and 2.5 μM) for 24 h. (F) Surface PD-L1 expression on H292 treated with Bafetinib (0.625, 1.25, and 2.5 μM) was determined by flow cytometry. Cells were estimated for PD-L1 or mouse IgG control antibodies. Data were the mean ± SEM of quadruplicate experiments. The data were analyzed by one-way ANOVA with Dunnett’s post hoc test. ***, p < 0.001; *, p < 0.05.
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