生物活性 | |||
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描述 | Phosphodiesterases (PDEs) comprise 11 enzyme families that hydrolyze adenosine 3′,5′ cyclic monophosphate and/or guanosine 3′,5′ cyclic monophosphate. Luteolin is a flavonoid that has been shown to inhibit PDE1-5 with IC50 values of around 20μM. The Ki values of luteolin against PDE1-5 were 15.0 3.9, 6.4 1.9, 13.9 4.2, 11.1 3.7 and 9.5 1.7μM, respectively. The EC50 (PDE4H) value of luteolin for displacing 2nM [3H]-rolipram binding on the high-affinity rolipram binding sites was 11.2 ± 1.5μM[9]. In RAW 264.7 cells, luteolin inhibited LPS-induced TNF-alpha release with an IC50 value of less than 1μM. Preincubation of cells with luteolin also inhibited LPS-induced phosphorylation of Akt and IkappaB-alpha[10]. Treatment with luteolin (10 – 30μmol/kg, s.c.) significantly and dose-dependently shortened the duration of xylazine/ketamine-induced anesthesia. Also, luteolin inhibited 5nM [3H]-flunitrazepam binding to rat cerebral cortex membranes with a Ki value of 60.1μM[9]. |
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 |
CHO cells | Function assay | Agonist activity at rat DAT expressed in CHO cells, EC50=1.45 μM | 20971650 | ||
HEK293 cells | Function assay | 24 h | Agonist activity at mouse PPARgamma expressed in HEK293 cells co-expressing with Gal4 reporter vector after 24 hrs by dual-luciferase reporter assay, EC50=2.3 μM | 24955889 | |
HEK293 FS cells | Function assay | Inhibition of NOX4 expressed in HEK293 FS cells assessed as H2O2 production by H2O2/Tyr/LPO assay, IC50=0.85 μM | 20731357 |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
3.49mL 0.70mL 0.35mL |
17.47mL 3.49mL 1.75mL |
34.94mL 6.99mL 3.49mL |
参考文献 |
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