TCS-PIM-1-4a (SMI-4a)

Alias: TCS PIM-1 4a;SMI-4a; SMI4a; SMI 4a
Cat No.:V3233 Purity: ≥98%
TCS-PIM-1-4a ( (the mixture of E- and Z-enantiomers of SMI-4a) is a novel Pim inhibitor with IC50of 13 nM for Pim-1 and 2.3 μM for Pim-2.
TCS-PIM-1-4a (SMI-4a) Chemical Structure CAS No.: 327033-36-3
Product category: Pim
This product is for research use only, not for human use. We do not sell to patients.
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

TCS-PIM-1-4a ( (the mixture of E- and Z-enantiomers of SMI-4a) is a novel Pim inhibitor with IC50 of 13 nM for Pim-1 and 2.3 μM for Pim-2. The Pim protein kinases are frequently overexpressed in prostate cancer and certain forms of leukemia and lymphoma. TCS-PIM-1-4a was identified by screening to be a Pim-1 inhibitor and was found to attenuate the autophosphorylation of tagged Pim-1 in intact cells. Although TCS-PIM-1-4a is a competitive inhibitor with respect to ATP, a screen of approximately 50 diverse protein kinases demonstrated that it has high selectivity for Pim kinases. Overall, TCS-PIM-1-4a represents a new Pim kinase inhibitor that may provide leads to novel anticancer agents.

Biological Activity I Assay Protocols (From Reference)
ln Vitro

In vitro activity: SMI-4a is a novel benzylidene-thiazolidine-2, 4-dione small molecule, potent and selective inhibitor of Pim1 with IC50 of 17 nM, it is modestly potent to Pim-2, and does not significantly inhibit any other serine/threonine- or tyrosine-kinases. SMI-4a blocks the growth of precursor T-cell lymphoblastic leukemia/lymphoma. SMI-4a was found to induce phosphorylation of extracellular signal-related kinase1/2 (ERK1/2). The serine/threonine Pim kinases are up-regulated in specific hematologic neoplasms, and play an important role in key signal transduction pathways, including those regulated by MYC, MYCN, FLT3-ITD, BCR-ABL, HOXA9, and EWS fusions. SMI-4a kills a wide range of both myeloid and lymphoid cell lines with precursor T-cell lymphoblastic leukemia/lymphoma (pre-T-LBL/T-ALL) being highly sensitive. Incubation of pre-T-LBL cells with SMI-4a induced G1 phase cell-cycle arrest secondary to a dose-dependent induction of p27(Kip1), apoptosis through the mitochondrial pathway, and inhibition of the mammalian target of rapamycin C1 (mTORC1) pathway based on decreases in phospho-p70 S6K and phospho-4E-BP1, 2 substrates of this enzyme. In addition, treatment of these cells with SMI-4a was found to induce phosphorylation of extracellular signal-related kinase1/2 (ERK1/2), and the combination of SMI-4a and a mitogen-activated protein kinase kinase 1/2 (MEK1/2) inhibitor was highly synergistic in killing pre-T-LBL cells. In immunodeficient mice carrying subcutaneous pre-T-LBL tumors, treatment twice daily with SMI-4a caused a significant delay in the tumor growth without any change in the weight, blood counts, or chemistries. These data suggest that inhibition of the Pim protein kinases may be developed as a therapeutic strategy for the treatment of pre-T-LBL. SMI-4a is an ATP competitive inhibitor of Pim1 with IC50 of 17 nM. SMI-4a shows high selectivity for Pim1 against a panel of kinases. SMI-4a inhibits the in vitro phosphorylation by Pim-1 of the known substrate, the translational repressor 4E-BP1. SMI-4a (5μM) inhibits pancreatic and leukemic cells growth. SMI-4a reduces phosphorylation of the Pim target Bad in prostate and hematopoietic cells. SMI-4a causes cell cycle arrest and reverses the antiapoptotic activity of Pim-1. SMI-4a increases the amount of p27Kip1 in the nucleus. SMI-4a treatment of pre-T-LBL inhibits the mTOR pathway. SMI-4a reduces MYC protein expression in pre-T-LBL. SMI-4a treatment induces up-regulation of MAPK pathway


Kinase Assay: SMI-4a is a selective ATP-competitive Pim-1 kinase inhibitor with an IC50 of 21 nM for Pim-1 compared to an IC50 of 100 nM for Pim-2 and with little or no activity against a panel of 50 other kinases tested.


Cell Assay: 6812/2 cells were incubated for 24 hours and Jurkat cells, for 48 hours with SMI-4a (10μM) or dimethyl sulfoxide (DMSO) in serum-free medium. After incubation, cells were harvested, washed once in phosphate-buffered saline (PBS), fixed in cold 70% ethanol for 45 minutes, stained with propidium iodide solution that contains RNaseA for 30 minutes, and analyzed by flow cytometry.

ln Vivo
SMI-4a (60 mg/Kg) treatment twice daily significantly reduce tumor size and is well tolerated. Tumors harvested 1 hour after the final oral gavage of SMI-4a demonstrates decreased phosphorylation of p70 S6K compared with tumors from mice treated with vehicle, whereas in comparison total p70 S6K expression isunchanged.
Animal Protocol
Dissolved in 65% DMSO, 30% PEG-400, 5% Tween-80; 75, 60 mg/kg; oral administration
Nu/nu nude mice injected with pre-T-LBL cells
References
2011 Jan 11;108(2):528-33.;Mol Cancer Ther.2009 Jun;8(6):1473-83;Blood.2010 Jan 28;115(4):824-33.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C11H6F3NO2S
Molecular Weight
273.23
CAS #
327033-36-3
Related CAS #
327033-36-3
SMILES
O=C(NC/1=O)SC1=C\C2=CC=CC(C(F)(F)F)=C2
Synonyms
TCS PIM-1 4a;SMI-4a; SMI4a; SMI 4a
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: 10 mM in DMSO
Water:<1 mg/mL
Ethanol:
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 3.6599 mL 18.2996 mL 36.5992 mL
5 mM 0.7320 mL 3.6599 mL 7.3198 mL
10 mM 0.3660 mL 1.8300 mL 3.6599 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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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
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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.

Biological Data
  • TCS-PIM-1-4a (SMI-4a)

    SMI-4a treatment inhibits the phosphorylation of TORC1 substrates.Blood.2010 Jan 28;115(4):824-33.
  • TCS-PIM-1-4a (SMI-4a)

    SMI-4a treatment induces apoptosis in pre–T-LBL.Blood.2010 Jan 28;115(4):824-33.
  • TCS-PIM-1-4a (SMI-4a)

    ERK1/2 phosphorylation is increased by SMI-4a treatment.Blood.2010 Jan 28;115(4):824-33.
  • TCS-PIM-1-4a (SMI-4a)

    The sensitivity of leukemic cell lines to Pim kinase inhibitor SMI-4a.Blood.2010 Jan 28;115(4):824-33.
  • TCS-PIM-1-4a (SMI-4a)

    SMI-4a treatment of pre–T-LBL down-regulates the level of MYC protein.Blood.2010 Jan 28;115(4):824-33.
  • TCS-PIM-1-4a (SMI-4a)

    The in vivo sensitivity of 6812/2 to SMI-4a treatment.Blood.2010 Jan 28;115(4):824-33.
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