| Size | Price | Stock | Qty |
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| 25mg |
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| 50mg |
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| 100mg |
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Purity: ≥98%
HI-TOPK-032 is a novel, potent and selective TOPK kinase inhibitor which strongly suppressed TOPK kinase activity in vitro but had little effect on extracellular signal–regulated kinase 1 (ERK1), c-jun—NH2—kinase 1, or p38 kinase activities. Moreover, HI-TOPK-032 increased colon cancer cell apoptosis by controlling the abundance of p53, cleaved caspase-7, and cleaved PARP, and inhibited both anchorage-dependent and -independent colon cancer cell growth by decreasing ERK-RSK phosphorylation. A colon cancer xenograft model's tumor growth was inhibited in vivo by the administration of HI-TOPK-032. The development of HI-TOPK-032 as a possible treatment for colorectal cancer is under consideration. Apoptosis, inflammation, tumor development, and cancer growth are all significantly impacted by the serine-threonine mitogen-activated protein kinase kinase family member T-LAK cell-originated protein kinase (TOPK/PBK) (Cancer Res; 72(12); 3060–8).
| Targets |
TOPK; ERK-RSK; p53; Caspase-7
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| ln Vitro |
HI-TOPK-032 has a substantial inhibitory effect on TOPK dormancy activity, but has no effect on p38, c-jun-NH2-dormancy1, or extracellular signal-regulated dormancy 1 (ERK1). HI-TOPK-032 modifies TOPK's ATP binding. This chemical reacts correspondingly with LYS30 and generates hydrogen bonds with GLY83 and ASP151. However, 40% of MEK1 activity in chromatin was reduced by the maximum dose (5 μM) of HI-TOPK-032. By controlling p53, localized caspase-7, and localized PARP, HI-TOPK-032 also prevented ERK-RSK phosphorylation. Wall-dependent and non-navigational circular growth is inhibited by an increase in the number of circular navigators [1].
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| ln Vivo |
Mice treated with 1 or 10 mg/kg of HI-TOPK-032 showed a significant growth inhibition of more than 60% of HCT-116 tumor growth when compared to the tumor treatment group. The mice exhibited good tolerance to the treatment group of HI-TOPK-032. The phosphorylation of ERK and ERK's immediate downstream protein RSK was markedly suppressed in the HI-TOPK-032 treatment group, while p53 expression was considerably elevated [1].
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| Enzyme Assay |
Through an in vitro kinase assay with [γ-32P]ATP and ERK1 (active, 500 ng), inactive RSK2 (ERK1 substrate, 1 μg), JNK1 (active, 50 ng), c-Jun (JNK1 substrate, 1 μg), p38 (active, 200 ng), and ATF2 (p38 substrate, 500 ng), the impact of HI-TOPK-032 on ERK1, JNK1, and p38 activity is evaluated. In a nutshell, 40 μL of reaction buffer is used along with 10 μCi of [γ-32P]ATP and HI-TOPK-032 (0.5, 1, 2, 5 μM). SDS-PAGE is used to separate the mixture after 30 minutes of room temperature incubation, during which time 10 μL of protein loading buffer is added to stop the reaction[1].
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| Cell Assay |
HI-TOPK-032 is administered at varying concentrations to HCT-116 colon cancer cells (1, 2, 5 μM). Following a period of 1, 2, or 3 days of incubation, 20 μL of CellTiter96 AQueous One Solution is introduced, and the cells are subsequently incubated for 1 hour at 37°C in an incubator with 5% CO2. At 492 nm, absorbance is measured[1].
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| Animal Protocol |
Mice: The four groups of mice are as follows: (i) the untreated vehicle group; (ii) the 1 mg and 10 mg HI-TOPK-032/kg body weight; (iii) the 10 mg and 1 mg body weight group; and (iv) the no cells and 10 mg HI-TOPK-032/kg body weight group. To inoculate each mouse's right flank, a suspension of HCT-116 cells is placed in serum-free McCoy 5A medium s.c. For twenty-five days, the vehicle or HI-TOPK-032 is injected three times a week. It calculates tumor volume[1].
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| References |
[1]. Kim DJ, et al. Novel TOPK inhibitor HI-TOPK-032 effectively suppresses colon cancer growth. Cancer Res. 2012 Jun 15;72(12):3060-8
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| Molecular Formula |
C20H11N5OS
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|---|---|
| Molecular Weight |
369.399241685867
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| Exact Mass |
369.07
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| Elemental Analysis |
C, 65.03; H, 3.00; N, 18.96; O, 4.33; S, 8.68
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| CAS # |
487020-03-1
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| Related CAS # |
487020-03-1
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| Appearance |
Solid powder
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| SMILES |
C1=CC=C2C(=C1)N=C3C(=C4C=C(C=CN4C3=N2)NC(=O)C5=CC=CS5)C#N
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| InChi Key |
BCSBXWKRZUPFHW-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C20H11N5OS/c21-11-13-16-10-12(22-20(26)17-6-3-9-27-17)7-8-25(16)19-18(13)23-14-4-1-2-5-15(14)24-19/h1-10H,(H,22,26)
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| Chemical Name |
N-(12-cyanoindolizino[2,3-b]quinoxalin-2-yl)thiophene-2-carboxamide
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| Synonyms |
HI-TOPK-032; HI-TOPK032; HI-TOPK 032; HI TOPK-032; HI TOPK032; HI TOPK 032
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| HS Tariff Code |
2934.99.9001
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| 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)
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| Solubility (In Vitro) |
DMSO: 4~5 mg/mL (10.8~13.5 mM)
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| Solubility (In Vivo) |
Solubility in Formulation 1: 10 mg/mL (27.07 mM) in 15% Cremophor EL + 85% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with sonication.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: 0.25 mg/mL (0.68 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 2.5 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. (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.7071 mL | 13.5355 mL | 27.0709 mL | |
| 5 mM | 0.5414 mL | 2.7071 mL | 5.4142 mL | |
| 10 mM | 0.2707 mL | 1.3535 mL | 2.7071 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.
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.
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