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Tariquidar (XR9576)
Catalog No.S8028
For research use only.
Tariquidar (XR9576) is a potent and selective noncompetitive inhibitor of P-glycoprotein with Kd of 5.1 nM in CHrB30 cell line, reverses drug resistance in MDR cell Lines. Phase 3.
CAS No. 206873-63-4
Selleck's Tariquidar (XR9576) has been cited by 36 publications
Purity & Quality Control
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Biological Activity
| Description | Tariquidar (XR9576) is a potent and selective noncompetitive inhibitor of P-glycoprotein with Kd of 5.1 nM in CHrB30 cell line, reverses drug resistance in MDR cell Lines. Phase 3. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Targets |
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| In vitro |
Tariquidar displays high-affinity binding to P-gp with Bmax of 275 pmol/mg. Tariquidar shows non-competitive interaction with the P-gp substrates vinblastine and paclitaxel. Tariquidar increases the steady-state accumulation of these cytotoxics in CHrB30 cells to levels observed in non-P-gp-expressing AuxB1 cells with EC50 of 487 nM. Tariquidar is able to inhibit the vanadate-sensitive ATPase activity of P-gp by 60-70%, with potent IC50 values of 43 nM. [1] Tariquidar may inhibit other resistance mechanisms at higher concentrations. 1 μM Tariquidar abrogates ABCG2 (BCRP)-mediated resistance to camptothecins in vitro. [2] Tariquidar potentiates the cyto-toxicity of several drugs including doxorubicin, paclitaxel, etoposide, and vincristine; complete reversal of resistance is achieved in the presence of 25- 80 nM Tariquidar. In MC26, a murine colon carcinoma cell line with intrinsic chemoresistance, the doxorubicin IC50 is fivefold lower in the presence of 0.1 μM Tariquidar (36 vs 7 nM). In murine mammary carcinoma, human small-cell lung carcinoma and human ovarian carcinoma cell lines with acquired chemotherapeutic resistance (EMT6/AR1.0, H69/LX4 and 2780 AD), the in vitro doxorubicin IC50 is 22-150-fold lower in the presence of 0.1 μM Tariquidar. P-gp inhibition persists for 23 h after removal of Tariquidar from the culture system. [3] Tariquidar restored the cyto-toxicity of doxorubicin and vinblastine in the National Cancer Institute (NCI)/ADRRES multicellular tumor spheroid model derived from the MCF7WT breast cancer cell line. [4] |
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| Cell Data |
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| Assay |
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| In vivo | Tariquidar (2- 8 mg/kg p.o.) is found to significantly potentiate the antitumor activity of doxorubicin (5 mg/kg, i.v.) against MC26 murine colon carcinoma in vivo. In human carcinoma xenografts, coadministration of XR9576 (6 -12 mg/kg p.o.) fully restored the antitumor activity of paclitaxel, etoposide, and vincristine against two highly resistant MDR human tumor xenografts (2780AD, H69/LX4) in nude mice. [3] |
Protocol (from reference)
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Solubility (25°C)
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In vitro |
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Chemical Information
| Molecular Weight | 646.73 | ||
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| Formula | C38H38N4O6 |
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| CAS No. | 206873-63-4 | ||
| Storage | 3 years | -20°C | powder |
| 2 years | -80°C | in solvent | |
| Smiles | COC1=C(C=C2CN(CCC2=C1)CCC3=CC=C(C=C3)NC(=O)C4=CC(=C(C=C4NC(=O)C5=CC6=CC=CC=C6N=C5)OC)OC)OC | ||
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)
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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.)
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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
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Clinical Trial Information
| NCT Number | Recruitment | Interventions | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|---|
| NCT01663545 | Completed | -- | Epilepsies Partial | National Institute of Neurological Disorders and Stroke (NINDS)|National Institutes of Health Clinical Center (CC) | July 31 2012 | -- |
| NCT01547754 | Terminated | -- | HIV-Associated Cognitive Motor Complex | National Institute of Mental Health (NIMH)|National Institutes of Health Clinical Center (CC) | January 9 2012 | -- |
| NCT01386476 | Completed | -- | Drug Resistance | National Institute of Mental Health (NIMH)|National Institutes of Health Clinical Center (CC) | June 15 2011 | -- |
| NCT00082368 | Completed | Drug: Tariquidar|Drug: Tc-94m Sestamibi | Cancer | National Cancer Institute (NCI)|National Institutes of Health Clinical Center (CC) | May 16 2004 | Phase 2 |
(data from https://clinicaltrials.gov, updated on 2022-08-01)
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:
Can you please give me more specific and detailed information of how to dissolve and use this compound (S8028) for in vivo studies?
Answer:
Tariquidar in 30% Propylene glycol, 5% Tween 80, 65% D5W at 30mg/ml will be a suspension or emulsion. If you are going to administrate the compound by oral gavage, it is fine. We also have test some vehicles for Tariquidar for i.p injection, and it is soluble in 5% DMSO+45% PEG 300+ddH2O at 2mg/ml clearly. When preparing the solution, please dissolve the compound in DMSO clearly first, then add PEG. After they mixed well, then dilute with water.
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