生物活性 | |||
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描述 | The multidrug resistance is an obstacle in the chemotherapy treatment for many solid and haematological tumours. Many factors can cause the multidrug resistance. Among them, the overexpression of P-gp (ABCB1), an ATP-binding cassette (ABC) drug efflux transporter, on the surface of resistant cells is considered as a key factor mediating multidrug resistance. Elacridar is a dual inhibitor of P-gp/BCRP, which can completely inhibit directed transport of crizotinib by P-gp at concentration of 5μM in MDCKII cells expressing human ABCB1. Elacridar is usually used combined with other anticancer drugs to increase the bio-available, achieve higher plasma concentration and improve brain accumulation of these anticancer drugs, such as tyrosine kinase inhibitor (TKI) . Coadministration of elacridar at dose of 100mg/kg could increase the plasma and brain concentrations and brain/plasma ratio of crizotinib in mice, suggesting that the effect of elacridar on increasement of crizotinib oral availability and delivery to the brain[1]. |
细胞研究 | |||||
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细胞系 | 浓度 | 检测类型 | 检测时间 | 活动说明 | 数据源 |
Caco-2 cells | Function assay | Inhibition of human P-gp mediated [3H]vinblastine transport activity in human Caco-2 cells, EC50=2 μM | 18276145 | ||
HEK293 cells | Function assay | Inhibition of ABCG2 expressed in HEK293 cells assessed as mitoxantrone-mediated efflux by flow cytometry, IC50=0.41 μM | 17317193 | ||
Kb-V1 cells | Function assay | 10 mins | Inhibition of ABCB1 expressed in Kb-V1 cells after 10 mins by calcein-AM assay, IC50=0.193 μM | 21570282 |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
1.77mL 0.35mL 0.18mL |
8.87mL 1.77mL 0.89mL |
17.74mL 3.55mL 1.77mL |
参考文献 |
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