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采用UPLC-MS/MS法研究辣薄荷基厚朴酚在不同种属肝微粒体

        中的代谢特征                Δ


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        邓 星    1,2* ,罗莉娅 ,苟立平 ,温倩雯 ,汤明海 ,万 丽 (1.成都中医药大学药学院,成都 611137;2.四川
        大学华西医院肿瘤生物治疗研究室,成都 610041)
        中图分类号 R969.1          文献标志码 A          文章编号 1001-0408(2019)02-0170-06
        DOI   10.6039/j.issn.1001-0408.2019.02.06

        摘   要   目的:建立测定肝微粒体孵育体系中辣薄荷基厚朴酚浓度的方法,并探讨其在不同种属肝微粒体中的代谢特征。方法:
        分别将辣薄荷基厚朴酚溶解于烟酰胺腺嘌呤二核苷酸磷酸(NADPH)启动的人、大鼠、小鼠、猴、犬肝微粒体孵育体系中,置于
        37 ℃水浴中进行孵育,分别于孵育的0、2、5、10、15、20、30、45、60 min时用甲醇终止反应,以厚朴酚为内标,采用超高效液相色谱-
        串联质谱法(UPLC-MS/MS)测定各孵育体系中辣薄荷基厚朴酚的质量浓度。色谱柱为Acquity UPLC                         TM  CSH C18,流动相为0.1%
        甲酸溶液-甲醇(梯度洗脱),流速为0.3 mL/min,柱温为30 ℃,进样量为2 μL;离子源为电喷雾离子源,以多反应监测模式进行正离
        子扫描,用于定量分析的离子对分别为m/z 401.2→331.1(辣薄荷基厚朴酚)、m/z 265.1→247.0(内标)。以孵育0 min时辣薄荷基厚
        朴酚的质量浓度为参照,计算其在不同孵育体系中的药物剩余百分比、体外代谢半衰期(t1/2 )和固有清除率(CLint )。采用化学抑制
        剂法探讨辣薄荷基厚朴酚的代谢途径;在上述色谱条件下,采用一级全扫描以正离子方式检测,初步分析其体外代谢产物。结果:
        辣薄荷基厚朴酚质量浓度检测的线性范围为3.91~500.00 ng/mL,定量下限为3.91 ng/mL;日内、日间RSD均小于10%,准确度为
        87.40%~103.75%,基质效应不影响待测物的测定。辣薄荷基厚朴酚在人、大鼠、小鼠、犬肝微粒体中代谢明显,而在猴肝微粒体
        中代谢不明显;孵育30 min后,其在各种属肝微粒体的药物剩余百分比趋于稳定。辣薄荷基厚朴酚在人、大鼠、小鼠、猴、犬肝微粒
        体中的 t1/2分别为 12.07、17.68、17.59、216.56、61.88 min,CLint分别为 0.115、0.078、0.079、0.006、0.022 mL/(min·mg)。细胞色素 P450
        (CYP)2A6、CYP2D6、CYP2C19、CYP3A4、CYP2C9、CYP2E1、CYP1A2 酶对该化合物代谢的抑制率分别为 55.76%、93.94%、
        96.01%、93.69%、71.81%、23.25%、28.04%。辣薄荷基厚朴酚在人肝微粒体中两个主要代谢产物的准分子离子峰分别为 m/z
                   +
        441.2([M+Na])、m/z 337.2([M+H])。结论:本研究建立的UPLC-MS/MS法简便、快速、专属性强,可用于肝微粒体孵育体系中辣
                                   +
        薄荷基厚朴酚浓度的测定及药动学的研究。该化合物在人、大鼠、小鼠、猴、犬等5种肝微粒体中的代谢特征有差异,且其代谢过
        程可能与CYP2D6、CYP2C19、CYP3A4、CYP2C9等酶有关。
        关键词 辣薄荷基厚朴酚;不同种属;肝微粒体;体外代谢稳定性;代谢酶;代谢产物

        Study on the Metabolic Characteristics of Piperitylmagnolol in Different Species of Liver Microsomes by
        UPLC-MS/MS
                                                                                              1
        DENG Xing   1,2 ,LUO Liya 1,2 ,GOU Liping 1,2 ,WEN Qianwen 1,2 ,TANG Minghai ,WAN Li (1. School of
                                                                                    2
        Pharmacy,Chengdu University of TCM,Chengdu 611137,China;2. Dept. of Cancer Biotherapy,West China
        Hospital,Sichuan University,Chengdu 610041,China)

        ABSTRACT    OBJECTIVE:To establish a method for the determination of piperitylmagnolol in the incubation system of liver
        microsomes,and to investigate the metabolic characteristics of it in different species of liver microsomes. METHODS:The
        piperitylmagnolol were respectively dissolved in NADPH activated liver microsome incubation systems of human,rat,mouse,
        monkey and dog,and then incubated in water at 37 ℃. The reaction was terminated with methanol at 0,2,5,10,15,20,30,
        45 and 60 minutes of incubation,respectively. Using magnolol as internal standard,UPLC-MS/MS method was used to determine
        the concentration of piperitylmagnolol in the incubation system. The determination was performed on Acquity UPLC TM  CSH C18
        column with mobile phase consisted of 0.1% formic acid-methanol(gradient elution)at the flow rate of 0.3 mL/min. The column
        temperature was set at 30 ℃,and the sample size was 2 μL. The ion source was electrospray ion source,and the positive ion
        scanning was carried out in the multiple reaction monitoring mode. The ion pairs used for quantitative analysis were m/z 401.2→
        331.1(piperitylmagnolol)and m/z 265.1→247.0(internal standard),respectively. Using the concentration of piperitylmagnolol at 0
        min of incubation as a reference,the residual percentage,metabolism half-life in vitro(t1/2 )and intrinsic clearance(CLint )were
                                                            calculated for different incubation systems. The metabolic
            Δ 基金项目:国家自然科学基金资助项目(No.81673653)
                                                            pathway of piperitylmagnolol was studied by chemical inhibitor
            *硕士研究生。研究方向:药物分析。E-mail:dxing1110@163.
                                                            method. Under the above chromatographic conditions, the
        com
            # 通信作者:教授,博士生导师。研究方向:药物分析。E-mail:               metabolites in vitro were preliminarily analyzed by first-order
        wanli8801@163.com                                   full scanning and positive ion detection. RESULTS:The linear


        ·170  ·  China Pharmacy 2019 Vol. 30 No. 2                                   中国药房    2019年第30卷第2期
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