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莽草酸衍生物的合成及其对紫杉醇耐药人乳腺癌细胞的逆转作

        用研究        Δ


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        张 璐 ,陈思颖 ,王 谦 ,张 锦 ,黄丽英 ,任 乐 ,田会萍 ,王 楠 ,董亚琳 (1.西安交通大学第一附属
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                        1
        医院药学部,西安 710061;2.陕西科技大学食品与生物工程学院,西安 710021)
        中图分类号 R914.5         文献标志码 A           文章编号 1001-0408(2020)08-0945-08
        DOI  10.6039/j.issn.1001-0408.2020.08.09
        摘  要   目的:对莽草酸进行结构修饰,并探讨其衍生物对紫杉醇耐药人乳腺癌细胞MCF-7/PTX的逆转作用。方法:以莽草酸为
        先导结构,通过酯化、酰胺化、氢化、还原等方法对其1位羧基进行结构修饰,合成一系列莽草酸衍生物;以非耐药细胞MCF-7为参
        照,采用MTT法筛选具有抑制活性的衍生物,并同法考察活性衍生物对MCF-7/PTX细胞的半数抑制浓度(IC50 )和逆转倍数(RI);
        以耐药相关蛋白转胶蛋白2为靶点,采用Glide 1.0计算机辅助设计软件将活性衍生物与转胶蛋白2进行分子对接。结果:共合成
        得到15个衍生物(T1~T15 ),其中T4~T15为首次合成所得。MTT试验结果显示,(3R,4S,5R)-N-苄基-3,4,5-三羟基-1-环己烯-1-甲
        酰胺(T7 )、(3R,4S,5R)-N-(3,4,5-三羟基-1-环己烯甲基)-苄胺(T14 )、(3R,4S,5R)-3,4-O-异亚丙基-5-O-乙酰基-1-环己烯-1-甲酸甲
        酯(T15 )对MCF-7和MCF-7/PTX细胞均具有一定的抑制作用,且各剂量T7、T14、T15+紫杉醇联用组对MCF-7/PTX细胞的IC50值均显
        著低于阴性对照(紫杉醇单用)组(P<0.05);T14、T15的RI较高,其最高剂量的RI已达8.8、9.3,与阳性对照药物维拉帕米(10.8)相
        当。分子对接结果显示,T7 3、4位上的羟基可与转胶蛋白2催化区域的Arg625、Asp627形成多个氢键;T14除上述氢键外,其1位上
        的二级胺侧链还可与转胶蛋白2的Glu657形成氢键;T15母核上的羟基被供电基团衍生化后,其与转胶蛋白2的结合更为紧密,抑
        制作用有所增强。结论:衍生物T7、T14、T15对紫杉醇耐药人乳腺癌细胞均具有一定的逆转活性。母核上的多羟基结构是莽草酸及
        其衍生物与转胶蛋白2形成氢键的主要结构区域,对其进行供电基团衍生化或在莽草酸1位羧基引入二级胺、疏水基团等均可有
        利于增强衍生物的耐药逆转活性。
        关键词 莽草酸衍生物;转胶蛋白2;乳腺癌;紫杉醇耐药;逆转作用

        Study on the Synthesis of Shikimic Acid Derivatives and Their Reversal Effects on Paclitaxel-resistant
        Human Breast Cancer Cells
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        ZHANG Lu ,CHEN Siying ,WANG Qian ,ZHANG Jin ,HUANG Liying ,REN Le ,TIAN Huiping ,WANG
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        Nan ,DONG Yalin(1. Dept. of Pharmacy,the First Affiliated Hospital of Xi’an Jiaotong University,Xi’an
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        710061,China;2. School of Food and Biological Engineering,Shaanxi University of Science & Technology,
        Xi’an 710021,China)
        ABSTRACT    OBJECTIVE:To structurally modify shikimic acid,and to investigate the reversal effects of its derivatives on
        paclitaxel-resistant human breast cancer cells MCF-7/PTX. METHODS:Using shikimic acid as the lead structure,1-position
        carboxyl group was structurally modified to synthesize a series of shikimic acid derivatives through esterification,amidation,
        hydrogenation and reduction,etc. Using non-drug resistant cells MCF-7 as reference,MTT assay was used to screen derivatives
        with inhibitory activity as well as half-inhibitory concentration(IC50 )and reversal index(RI)of derivatives to MCF-7/PTX. With
        the drug resistance-related transgelin 2 as the target,the molecular docking of the active derivatives with the drug resistance-related
        protein was carried out by using Glide 1.0 computer-aided design software. RESULTS:Totally 15 derivatives were obtained(T1-T15 ),
        of  which  T4-T15  were  obtained  for  the  first  time.  MTT  assay  showed  that (3R, 4S, 5R) -N-benzyl-3, 4,
        5-trihydroxy-1-cyclohexene-1-formamide (T7 ),(3R,4S,5R)-N-(3,4,5-trihydroxy-1-cyclohexenylmethyl)-benzylamine (T14 ),
       (3R,4S,5R)-3,4-O-isopropyl-5-O-acetyl-1-cyclohexene-1-methyl formate (T15 ) inhibited MCF-7 and MCF-7/PTX cells to a
        certain extent;IC50 values of T7,T14 and T15 combined with pacliaxel to MCF-7/PTX cells were significantly lower than that in
        negative control(Paclitaxel alone)group(P<0.05). RIs of T14 and T15 were higher,and RIs of the highest dose were 8.8 and 9.3,
        which were equivalent to positive control verapamil(10.8). The results of molecular docking showed that the hydroxyl groups at
                                                           positions 3,4 of T7 could form multiple hydrogen bonds with
           Δ 基金项目:陕西省自然科学基础研究计划(No.2017JM8013);
                                                           Arg625 and Asp627 in the catalytic region of transgelin 2. In
        陕西省中医药管理局项目(No.ZYMS017)
                                                           addition to the hydrogen bond mentioned above at T7,the
           *主管药师。研究方向:临床药学。电话:029-85323244。E-
                                                           secondary amine side chain at position 1 of T14 could also form
        mail:batistuta28@126.com
           # 通信作者:主任药师,教授,博士生导师,博士。研究方向:临床                 hydrogen bond with Glu657 of transgelin 2. When the
        药学。电话:029-85323243。E-mail:dongyalin@ mail.xjtu.edu.cn  hydroxyl group on the T15 mother nucleus was derived from


        中国药房    2020年第31卷第8期                                              China Pharmacy 2020 Vol. 31 No. 8  ·945  ·
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