目的 使用原代培养的人肝细胞研究倍半萜烯内酯类化合物衍生物ACT001对P450酶的诱导作用，为ACT001的临床使用提供参考。方法 分别将3批次的冷冻原代人肝细胞进行接种培养，使用ACT001对CYP1A2、CYP2B6和CYP3A4进行诱导，实时荧光定量PCR（qRT-PCR）测定P450酶mRNA表达水平，液相色谱-质谱联用（LC-MS/MS）法测定P450酶活力。结果 P450酶mRNA表达水平及酶活力的结果均显示模型制备成功；与对照组比较，ACT001 1、6 μmol/L组细胞CYP1A2 mRNA表达水平和酶活力未见明显变化；ACT001 30 μmol/L组细胞CYP1A2 mRNA表达水平显著降低，酶活力虽出现下降趋势，但不如mRNA下降明显。随着ACT001浓度增加，CYP2B6 mRNA表达水平逐渐升高，与对照组比较，ACT001 30 μmol/L组细胞CYP2B6 mRNA表达水平显著升高，均超过对照组的7倍，酶活力增加均>4倍，超过苯巴比妥钠诱导倍数的40%。与对照组比较，ACT001 1 μmol/L组细胞CYP3A4 mRNA表达水平明显升高，超过对照组的4倍，但未达到阳性诱导剂利福平诱导倍率的40%，且随着ACT001浓度的增加，细胞内CYP3A4 mRNA表达水平逐渐降低；同时，ACT001不同浓度给药后CYP3A4酶活力未出现明显升高，均小于对照组的2倍。结论 ACT001对CYP1A2、CYP3A4没有诱导潜能，对CYP2B6存在诱导潜能，在临床联合用药时应避免与CYP2B6的底物联合使用，以减少因P450酶介导的药物-药物间相互作用（DDI）产生的不良反应。

Objective In this study, primary cultured human hepatocytes were used to study the induction of P450 enzyme by the sesquiterpene lactone derivative ACT001, which provided reference for the clinical use of ACT001. Methods Three batches of frozen primary human hepatocytes were inoculated and cultured, and CYP1A2, CYP2B6 and CYP3A4 were induced by ACT001. Real-time fluorescence quantitative PCR was used to determine the mRNA expression level of P450 enzyme, and the activity of P450 enzyme was determined by LC-MS/MS method. Results The expression level of P450 enzyme mRNA and the activity of P450 enzyme showed that the P450 enzyme induction model was successfully established. Compared with the control group, the CYP1A2 mRNA expression level and enzyme activity of ACT001 1 μmol/L and 6 μmol/L group showed no significant changes. The mRNA expression level of CYP1A2 in ACT001 30 μmol/L group was significantly decreased, and the enzyme activity was decreased, but not as significantly as that of mRNA. With the increase of ACT001 concentration, the expression level of CYP2B6 mRNA was gradually increased. Compared with the control group, the expression level of CYP2B6 mRNA in the ACT001 group at 30 μmol/L was significantly increased, which was seven times higher than that in the control group, and the increase of enzyme activity was four times higher than that in the control group, which was 40% higher than that in the phenobarbital sodium induction multiple. Compared with the control group, the CYP3A4 mRNA expression level of cells in the ACT001 1 μmol/L group was significantly increased, which was four times higher than that of the control group, but did not reach 40% of the positive inducer rifampicin, and the CYP3A4 mRNA expression level was decreased gradually with the increase of ACT001 concentration. At the same time, there was no significant increase in CYP3A4 enzyme activity after ACT001 administration at different concentrations, which was less than two times of that in the control group. Conclusion The data indicated that ACT001 had no induction potential for CYP1A2 and CYP3A4, and had potential for CYP2B6 induction. In combination with CYP2B6 substrates, it should be avoided in clinical combination therapy to reduce adverse reactions caused by P450-mediated drug drug interaction.

R285.5

国家自然科学基金重点项目（81430096）；国家自然科学基金青年科学基金项目（81503154）