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附子水提物对大鼠十二指肠外排转运蛋白和紧密连接蛋白表达
的影响 Δ
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2
1*
1 #
季苗苗 ,梁新丽 ,钟友宝 ,陈 来 ,廖正根 (1.江西中医药大学现代中药制剂教育部重点实验室,南昌
330004;2.江西中医药大学实验动物科技中心,南昌 330004)
中图分类号 R966 文献标志码 A 文章编号 1001-0408(2019)20-2813-05
DOI 10.6039/j.issn.1001-0408.2019.20.15
摘 要 目的:研究附子水提物对大鼠十二指肠组织中3种外排转运蛋白和3种紧密连接蛋白及其基因表达的影响。方法:取32
只SD雄性大鼠,随机分为正常组和附子水提物低、中、高剂量组[0.45、0.9、1.8 g/(kg·d),以生药量计算],每组8只,分别灌胃水和
相应药液0.1 mL/kg,连续给药7 d。末次给药后,取大鼠十二指肠肠段,采用Western blotting法检测肠组织中P-糖蛋白(P-gp)、乳
腺癌耐药蛋白(Bcrp)、多药耐药蛋白2(Mrp2)为代表的外排转运蛋白和密封蛋白(Claudin-1)、闭合蛋白(Occludin)、闭锁小带蛋白
(ZO-1)为代表的紧密连接蛋白的表达水平;采用实时定量聚合酶链式反应法测定上述6种蛋白对应基因的mRNA表达水平。结
果:与正常组比较,附子水提物各剂量组大鼠十二指肠组织中P-gp、Mrp2、Bcrp、Claudin-1、Occludin、ZO-1的蛋白表达水平均显著
升高(P<0.01);附子水提物各剂量组P-gp的mRNA表达水平,附子水提物低、高剂量组Bcrp的mRNA表达水平以及附子水提物
中、高剂量组Claudin-1的mRNA表达水平均显著升高,差异均有统计学意义(P<0.05或P<0.01),其余基因的mRNA表达水平差
异均无统计学意义(P>0.05)。结论:附子水提物可从mRNA和/或蛋白水平上调3种外排转运蛋白和3种紧密连接蛋白的表达,
从而可能与上述外排转运蛋白的其他底物类药物以及以细胞旁路途径为主要转运通道的药物发生相互作用,在临床上联合用药
时可考虑对用药剂量作相应调整。
关键词 附子;水提物;十二指肠;外排转运蛋白;紧密连接蛋白;细胞旁路;药物相互作用;大鼠
Effects of Aconitum carmichaelii Water Extract on the Expression of Efflux Transporters and Tight
Junction Proteins in Duodenum of Rats
JI Miaomiao ,LIANG Xinli ,ZHONG Youbao ,CHEN Lai ,LIAO Zhenggen(1. Key Laboratory of Modern
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Preparation of Chinese Meteria Medica,Ministry of Education,Jiangxi University of TCM,Nanchang 330004,
China;2. Laboratory Animal Research Center for Science and Technology,Jiangxi University of TCM,
Nanchang 330004,China)
ABSTRACT OBJECTIVE:To study the effects of Aconitum carmichaelii water extract on the expression of 3 kinds of efflux
transporters and 3 kinds of tight junction proteins as well as their genes in duodenum tissues of rats. METHODS:Thirty-two SD
male rats were randomly divided into normal group,A. carmichaelii water extract low-dose,medium-dose and high-dose groups
[0.45,0.9,1.8 g/(kg·d),by crude drug],with 8 rats in each group. They were given water and relevant liquid 0.1 mL/kg
intragastrically for consecutive 7 d. After last administration,the duodenal segments of rats were collected. Western blotting assay
was used to detect the expression of efflux transporters as P-glycoprotein (P-gp),breast cancer resistance protein (Bcrp),
multidrug resistance protein 2(Mrp2)as well as tight junction proteins as Claudin-1,Occludin and ZO-1. mRNA expression of 6
kinds of proteins relevant gene were determined by qRT-PCR respectively. RESULTS:Compared with normal group,the protein
expression of P-gp, Mrp2, Bcrp, Claudin-1, Occludin and ZO-1 in duodenum of rats were increased significantly in A.
carmichaelii water extract groups(P<0.01). mRNA expression of P-gp in A. carmichaelii water extract groups,mRNA expression
of Bcrp in A. carmichaelii water extract low-dose and high-dose groups as well as mRNA expression of Claudin-1 in A. carmichaelli
water extract medium-dose and high-dose groups were increased significantly,with statistical significance(P<0.05 or P<0.01).
There was no statistical significance in mRNA expression of other genes (P>0.05). CONCLUSIONS:A. carmichaelii water
extract can up-regulate the expression of 3 kinds of efflux transporters and 3 kinds of tight junction proteins at the level of mRNA
and/or protein,thus may interact with other substrates of the
Δ 基 金 项 目 :国 家 自 然 科 学 基 金 资 助 项 目(No.81660757、
aforementioned efflux transporters and drugs with cell bypass
81760434);江 西 省 主 要 学 科 学 术 和 技 术 带 头 人 资 助 计 划
pathway as the main transport pathway. In clinical practice,
(No.20162BCB22015)
adjustment of dosage may be considered in drug combination.
*硕士研究生。研究方向:生物药剂学。E-mail:jmlv110@163.
com KEYWORDS Aconitum carmichaelii; Water extract;
# 通信作者:教授,博士生导师,博士。研究方向:药物新剂型和 Duodenum;Efflux transporter;Tight junction protein;Cell
新技术。电话:0791-7119011。E-mail:lyzlyg@163.com bypass pathway;Drug interaction;Rat
中国药房 2019年第30卷第20期 China Pharmacy 2019 Vol. 30 No. 20 ·2813 ·