生物活性 | |||
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描述 | EMPA is a high-affinity, reversible, and selective OX2 receptor antagonist. [3H]EMPA binds to human and rat OX2-HEK293 membranes with Kd values of 1.1 and 1.4 nM, respectively. EMPA competitively antagonizes orexin-A and orexin-B-induced [3H]inositol phosphate (IP) accumulation at hOX2 receptors with pA2 values of 8.6 and 8.8, respectively. EMPA displaces [3H]EMPA binding on cell membranes containing human and rat OX2 receptors with Ki values of 1.10±0.24 nM and 1.45±0.13 nM, respectively. In human and mouse V1a receptor binding assays, EMPA has IC50=5.75 µM, Ki=2.63 µM, IC50=12.8 µM, Ki=5.8 µM. In CHO (dHFr-) cells stably expressing hOX2 receptor, EMPA can inhibit the [Ca2+]i response induced by orexin-A or orexin-B, with IC50 values of 8.8±1.7 nM and 7.9±1.7 nM, respectively[1]. |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
2.20mL 0.44mL 0.22mL |
11.00mL 2.20mL 1.10mL |
22.00mL 4.40mL 2.20mL |
参考文献 |
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