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Ko 143 is a potent and selective breast cancer resistance protein multidrug transporter (BCRP) inhibitor (EC90 = 26 nM). Displays > 200-fold selectivity over P-gp and MRP-1 transporters. Increases intracellular drug accumulation and reverses BCRP-mediated multidrug resistance. Inhibits ABCB1 and ABCC1 at higher concentrations. Rapidly metabolized in rat plasma.
Toxicol Appl Pharmacol. 2024 Sep 24.
Human trophoblast organoids for improved prediction of placental ABC transporter-mediated drug transport
Ko 143 purchased from AbMole
| Cell Experiment | |
|---|---|
| Cell lines | MDCK II parent cells and ABCG2-transduced MDCK II cells |
| Preparation method | Reduction of mitoxantrone efflux from ABCG2-transduced MDCK II cells treated with Ko143 (1) or Ko143 analogues 3, 20, 21, and 22 as determined by mitoxantrone fluorescence. Cells were incubated with test compounds and mitoxantrone for 60 min. The mitoxantrone concentration was 1 μM in all experiments. |
| Concentrations | 1 μM |
| Incubation time | 60 min |
| Animal Experiment | |
|---|---|
| Animal models | Female Abcb1a/b(−/−) (Mdr1a/b(−/−) mice |
| Formulation | DMSO concentration of 5% (v/v) with a solution containing 10% (v/v) Tween 80, 25% (v/v) PEG 300, and 65% (v/v) sterile water. |
| Dosages | 1, 7, 15 mg/kg |
| Administration | i.v. injection |
| Molecular Weight | 469.57 |
| Formula | C26H35N3O5 |
| CAS Number | 461054-93-3 |
| Solubility (25°C) | DMSO 23 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
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