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新型蛇葡萄素衍生物γ-聚谷氨酸蛇葡萄素酯的合成、表征及抗肿
瘤作用评价 Δ
吴晓珊 ,倪 峰 ,高毓瀅 ,黄仁杰 (1.福建卫生职业技术学院药学系,福州 350101;2.嘉南药理大学生物科
2
1*
1
1 #
技系,中国 台湾 71710)
中图分类号 R284.3;R979.1 文献标志码 A 文章编号 1001-0408(2020)22-2720-06
DOI 10.6039/j.issn.1001-0408.2020.22.06
摘 要 目的:设计合成γ-聚谷氨酸蛇葡萄素酯(γ-PGA-AMP),并进行表征和体外抗肿瘤活性评价。方法:利用酯化反应将蛇葡
萄素接载在γ-聚谷氨酸上生成合成产物。采用紫外光谱法、傅里叶红外光谱法、氢-1核磁共振法及元素分析等方法对合成产物的
结构进行表征;采用紫外吸收光谱法在293 nm波长处测定合成产物中蛇葡萄素的含量。以5-氟尿嘧啶为阳性对照,采用MTT法
检测γ-PGA-AMP、蛇葡萄素对人乳腺癌细胞 MCF-7、人肝癌细胞 HepG2、人肺癌细胞 A549 的抑制作用,计算半数抑制浓度
(IC50 )。结果:表征结果显示,蛇葡萄素的 7 位游离羟基与γ-聚谷氨酸 a 位碳上的羧基已发生了酯化反应,合成产物即为
γ-PGA-AMP(产率为55.7%),其中蛇葡萄素含量为32.3%。γ-PGA-AMP和蛇葡萄素对MCF-7、HepG2和A549细胞均有明显的抑制
作用;γ-PGA-AMP对上述3种肿瘤细胞的IC50分别为40.19、28.29、55.23 μg/mL,蛇葡萄素的IC50分别为105.30、81.23、130.10 μg/mL,
5-FU的IC50分别为24.72、87.98、30.99 μg/mL。结论:成功合成具有体外抗肿瘤活性的γ-PGA-AMP,且抗肿瘤活性强于蛇葡萄素。
关键词 蛇葡萄素;γ-聚谷氨酸;高分子化合物;合成;表征;抗肿瘤作用
Synthesis, Characterization and Anti-tumor Effect Evaluation of Novel Ampelopsin Derivative Poly
(γ-glutamic Acid)-ampelopsin Conjugate
WU Xiaoshan ,NI Feng ,Gao Yuying ,HUANG Renjie(1. Dept. of Pharmacy,Fujian Health College,Fuzhou
1
1
1
2
350101,China;2. Dept. of Biotechnology,Chia-Nan University of Pharmacy and Science,Taiwan 71710,
China)
ABSTRACT OBJECTIVE:To design and synthesize poly(γ-glutamic acid)-ampelopsin(γ-PGA-AMP),and to characterize it
and evaluate its anti-tumor activity in vitro. METHODS:Synthetic product was produced through an esterification reaction between
γ-PGA and ampelopsin. The structure of synthetic product was characterized by the UV spectrophotometry,Fourier transform
infrared (FT-IR) spectroscopy,H-NMR spectra and the quantitative elemental analysis. The content of ampelopsin in synthetic
1
product was determined by UV absorption spectrometry at 292 nm. Using 5-FU as positive control,MTT assay was used to
determine inhibitory effects of γ-PGA-AMP and ampelopsin on human breast cancer cell MCF-7,human liver cancer cell HepG2
and human lung cancer cell A549. The IC50 was calculated. RESULTS:The results showed that the free 7-hydroxyl group of
ampelopsin and the a-carboxyl group of γ-polyglutamic acid had been esterified to obtain γ-PGA-AMP;the yield of γ-PGA-AMP
was 55.7%,and the content of ampelopsin was 32.3%. The inhibitory effect of γ-PGA-AMP and ampelopsin on MCF-7,HepG2
and A549 cells was obvious. IC 50 of γ-PGA-AMP(to 3 above tumor cells)were 40.19,28.29 and 55.23 μg/mL,those of ampelopsin
were 105.30,81.23,130.10 μg/mL,those of 5-FU were 24.72,87.98,30.99 μg/mL,respectively. CONCLUSIONS:γ-PGA-AMP
with anti-tumor effect in vitro is synthesized successfully,and its anti-tumor effect is stronger than that of ampelopsin.
KEYWORDS Ampelopsin;Poly(γ-glutamic acid);Polymer compounds;Synthesis;Characterization;Anti-tumor effect
蛇葡萄素的化学名为 3,5,7,3′,4′,5′-六羟基-2,3- 种植物中。蛇葡萄素的毒性低,具有抗氧化、镇痛、止
二氢黄酮,分子式为 C15H12O8,又名二氢杨梅素、双氢杨 咳、抑菌、保肝护肝、改善肝纤维化、降血糖、降血脂、增
梅树皮素、福建茶素等,是一种多酚羟基双氢黄酮醇,属 强免疫力、抗肿瘤等多种药理活性 [5-7] 。目前,蛇葡萄素
黄酮类化合物 [1-2] ,主要存在于大叶蛇葡萄 、藤茶 等多 的研究热点在其抗肿瘤活性上,但是在研究过程中,有
[4]
[3]
Δ 基金项目:福建省自然科学基金资助项目(No.2018J01118);福 学者发现该化合物的体内抗癌效果并不理想,分析原因
建省中青年教师教育科研项目(No.JA15784)
可能与该化合物溶解性和稳定性较差,同时存在较多的
* 讲 师 ,博 士 研 究 生 。 研 究 方 向 :药 物 分 析 。 E-mail:wux-
作用靶点,选择性不强、药理效应较弱等不足有关 [8-9] 。
iaoshan2018@sibs.ac.cn
针对上述不足,本课题组拟选用高分子聚合物γ-聚谷氨
# 通信作者:教授。研究方向:药物新剂型与新技术开发。电话:
0591-22869830。E-mail:hrj2@163.com 酸对蛇葡萄素进行结构修饰。γ-聚谷氨酸是一种天然高
·2720 · China Pharmacy 2020 Vol. 31 No. 22 中国药房 2020年第31卷第22期