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GSK461364
Catalog No.S2193 Synonyms: GSK461364A
For research use only.
GSK461364 (GSK461364A) inhibits purified Plk1 with Ki of 2.2 nM in a cell-free assay. It is more than 1000-fold selective against Plk2/3. Phase 1.
CAS No. 929095-18-1
Selleck's GSK461364 has been cited by 27 publications
Purity & Quality Control
Choose Selective PLK Inhibitors
Related Compound Libraries
Other PLK Products
Biological Activity
| Description | GSK461364 (GSK461364A) inhibits purified Plk1 with Ki of 2.2 nM in a cell-free assay. It is more than 1000-fold selective against Plk2/3. Phase 1. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Features | Demonstrates >390-fold selectivity for Plk1 relative to Plk2 and Plk3. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Targets |
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| In vitro |
GSK461364 inhibits cancer cell line proliferation from multiple origins with minimal toxicity in nondividing human cells. [1] RNA silencing of WT p53 increases the antiproliferative activity of GSK461364. As many cancer therapies tend to be more effective in p53 WT patients, the higher sensitivity of p53-deficient tumors toward GSK461364 could potentially offer an opportunity to treat tumors that are refractory to other chemotherapies as well as early line therapy for these genotypes. GSK461364 is a thiophene amide that inhibits purified Plk1 enzyme in vitro with a Ki of 2 nM and has >100-fold selectivity for Plk1 compared with Plk2 and Plk3. GSK461364 is a potent inhibitor of cell proliferation causing 50% growth inhibition (GI50) below 100 nM in most of the cell lines tested with limited toxicity against human nonproliferating cells. Inhibition of cell cycle progression is concentration dependent with initial delay at G2 phase at high GSK461364 concentrations and arrest at M phase at lower concentrations. Currently, GSK461364 is in a dose-escalation first-time-in-human trial. Cell lines with mutations in the TP53 gene tended to be more sensitive to GSK461364, and that inhibiting the p53 response by RNA silencing confers increased sensitivity in some p53 wild-type (WT) cells. Furthermore, these more sensitive cell lines also have increased levels of chromosome instability, a characteristic associated with TP53 mutations. [2] In preclinical testing, GSK461364 shows antiproliferative activity against multiple (>120) tumor cell lines and potently inhibits the proliferation of greater than 83% and 91% of these cell lines, with IC50 values lower than 50 and 100 nM, respectively. [3] |
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| Cell Data |
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| Assay |
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| In vivo | Cell culture growth inhibition by GSK461364 can be cytostatic or cytotoxic but leads to tumor regression in xenograft tumor models under proper dose scheduling. GSK461364 shows clear antitumor activity in human tumor xenograft models. [1] GSK461364 shows a dose-dependent mitotic arrest in mouse xenografts, which correlates with effects on tumor growth. [2] Intraperitoneal administration of GSK461364 causes regression or tumor growth delay in different xenograft models, including Colo205 xenografts. Suppression of Plk1 in vivo by using GSK461364 results in mitotic arrest with aberrant mitotic figures consisting of monopolar or collapsed mitotic spindles. [3] |
Protocol (from reference)
| Kinase Assay:[1] |
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| Cell Research:[2] |
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| Animal Research:[1] |
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| References |
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Solubility (25°C)
|
In vitro |
DMSO |
10 mg/mL
(18.39 mM) |
| Water |
Insoluble
|
|
| Ethanol |
'30 mg/mL
|
|
|
In vivo |
Add solvents to the product individually and in order |
30 mg/mL |
* 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 Information
| Molecular Weight | 543.6 | ||
|---|---|---|---|
| Formula | C27H28F3N5O2S |
||
| CAS No. | 929095-18-1 | ||
| Storage | 3 years | -20°C | powder |
| 2 years | -80°C | in solvent | |
| Smiles | CC(C1=CC=CC=C1C(F)(F)F)OC2=C(SC(=C2)N3C=NC4=C3C=C(C=C4)CN5CCN(CC5)C)C(=O)N | ||
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)
mg/kg
g
μL
Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)
% DMSO
%
% Tween 80
% ddH2O
%DMSO
%
Calculation results:
Working concentration: mg/ml;
Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.
Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.
Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.
Clinical Trial Information
| NCT Number | Recruitment | Interventions | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|---|
| NCT00536835 | Completed | Drug: GSK461364 | Lymphoma Non-Hodgkin | GlaxoSmithKline | August 16 2007 | Phase 1 |
(data from https://clinicaltrials.gov, updated on 2022-01-17)
Tech Support
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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Frequently Asked Questions
Question 1:
I would like to know whether the recommended in vivo formulation will be suitable for i.p. injections
Answer:
GSK461364 in 1% DMSO+30% polyethylene glycol+1% Tween 80 at 30mg/ml is a suspension, and it is fine for oral gavage.
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