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采用UPLC-MS/MS法研究树豆酮酸A在不同种属肝微粒体中的
代谢差异 Δ
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张 丽 ,蔡 进 ,班玉娟 ,朱高峰 ,陈 瑞 ,王建塔 ,汤 磊 ,黄 静 (1.贵州医科大学药学院,贵阳
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550004;2.贵州省化学合成药物研发利用工程技术研究中心,贵阳 550004)
中图分类号 R917;R969.1 文献标志码 A 文章编号 1001-0408(2019)18-2497-06
DOI 10.6039/j.issn.1001-0408.2019.18.09
摘 要 建立测定肝微粒体孵育体系中树豆酮酸A(CAA)质量浓度的方法,并比较其在不同种属肝微粒体中的代谢特征。方法:
分别将CAA溶解于由还原型烟酰胺腺嘌呤二核苷酸磷酸(NADPH)启动的大鼠、比格犬、人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、5、10、15、30、45、60 min时用乙腈终止反应,以染料木素为内标,采用超高效液相色谱-串联质谱法
(UPLC-MS/MS)检测各孵育体系中CAA的质量浓度。色谱柱为Waters BEH C18,流动相为水(含0.1%甲酸)-乙腈(含0.1%甲酸)
(45 ∶ 55,V/V),流速为0.25 mL/min,柱温为30 ℃,进样量为2 μL;采用电喷雾离子源,以选择反应监测模式进行负离子扫描,用于
定量分析的离子对分别为m/z 353.14→309.11(CAA)、m/z 269.86→224.11(内标)。以孵育0 min时CAA的质量浓度为参照,计算
其在不同孵育体系中的剩余百分比和酶动力学参数。结果:CAA 检测质量浓度的线性范围为 0.05~20 μg/mL,定量下限为
0.05 μg/mL,最低检测限为0.01 μg/mL;日内、日间RSD均小于10%,相对误差为-4.83%~8.94%,提取方法和基质效应均不影响
待测物的测定。孵育 60 min 时,CAA 在大鼠、比格犬、人肝微粒体中的剩余百分比分别为(62.79±9.99)%、(64.07±11.59)%、
(96.66±5.71)%;在大鼠、比格犬肝微粒体中的半衰期(72.19、68.61 min)均显著短于人肝微粒体(364.74 min),清除率[0.019 2、
0.020 2 mL/(min·mg)]均显著高于人肝微粒体[0.003 8 mL/(min·mg)](P<0.05)。结论:本研究建立的 UPLC-MS/MS 法简便、快
速、专属性强、灵敏度高,可用于肝微粒体孵育体系中CAA质量浓度的测定及体外代谢稳定性的研究。CAA在大鼠、比格犬肝微
粒体中的代谢稳定性均差于人肝微粒体。
关键词 树豆酮酸A;超高效液相色谱-串联质谱法;肝微粒体;不同种属;体外代谢稳定性
Study on Metabolic Differences of Cajanonic Acid A in Different Species of Liver Microsomes by
UPLC-MS/MS
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ZHANG Li ,CAI Jin ,BAN Yujuan ,ZHU Gaofeng ,CHEN Rui ,WANG Jianta ,TANG Lei ,HUANG Jing 1
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(1. School of Pharmacy, Guizhou Medical University, Guiyang 550004, China; 2. Guizhou Provincial
Engineering Technology Research Center for Chemical Drug R&D,Guiyang 550004,China)
ABSTRACT OBJECTIVE:To establish a determination method for the concentration of cajanonic acid A (CAA) in liver
microsome incubation system,and to compare the metabolism characteristics of it in different species of liver microsomes.
METHODS:CAA was dissolved in liver microsome incubation system of rat,Beagle dog and human initiated by reduced
nicotinamide adenine dinucleotide phosphate(NADPH),and was incubated in water at 37 ℃. The reaction was terminated with
acetonitrile at 0,5,10,15,30,45 and 60 min,respectively. Using genistein as internal standard,the concentration of CAA in
different incubation systems was determined by UPLC-MS/MS. The determination was performed on Waters BEH C18 column with
mobile phase consisted of water(containing 0.1% formic acid)-acetonitrile(containing 0.1% formic acid)(45 ∶ 55,V/V)at the
flow rate of 0.25 mL/min. The column temperature was 30 ℃,and the sample size was 2 μL. The electrospray ionization source
was used to the select reaction monitoring mode for negative ion scanning. The ion pairs for quantitative analysis were m/z 353.14→
309.11(CAA),m/z 269.86→224.11(internal standard)respectively. The residual percentage and enzymatic kinetic parameters of
CAA in different incubation systems were calculated according
Δ 基金项目:国家自然科学基金资助项目(No.81660573);贵州省
to the mass concentration of CAA at 0 min. RESULTS:The
科技计划项目(No.黔科合支撑[2017]2842、黔科合支撑[2017]2839、黔
科合 LH 字[2016]7379);贵州省高层次创新型人才培养项目[No.黔科 linear range of CAA was 0.05-20 μg/mL;the limit of quanti-
合人才(2016)4015 号];贵州省卫生计生委科学技术基金项目(No.gz- tation was 0.05 μ g/mL,and the lowest detection limit was
wjkj2017-1-010);贵州省普通高等学校科技拔尖人才支持计划(No.黔 0.01 μg/mL. RSDs of intra-day and inter-day were lower than
教合KY字[2017]072);贵阳市科技计划项目(No.筑科合同[2017]5-7号) 10% ; relative errors ranged - 4.83% -8.94% ; extraction
*硕士研究生。研究方向:创新型化合物的药动学。E-mail:
method and matrix effect did not affect the determination of
576048657@qq.com
the substance to be measured. At 60 min of incubation,
# 通信作者:副教授,硕士生导师,硕士。研究方向:药物新剂型、
新技术及药动学。电话:0851-86550366。E-mail:1104849720@qq. residual percentages of CAA in rat,Beagle dog and human
com liver microsomes were(62.79 ± 9.99)% ,(64.07 ± 11.59)% ,
中国药房 2019年第30卷第18期 China Pharmacy 2019 Vol. 30 No. 18 ·2497 ·