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白花丹素镧(Ⅲ)配合物与牛血清白蛋白相互作用的光谱学研究
引用本文:顾运琼,梁伟江,罗旭健,周能,谭明雄.白花丹素镧(Ⅲ)配合物与牛血清白蛋白相互作用的光谱学研究[J].化学研究,2013(6):605-610.
作者姓名:顾运琼  梁伟江  罗旭健  周能  谭明雄
作者单位:[1]玉林师范学院化学与材料学院,广西玉林537000 [2]广西师范大学药用资源化学与药物分子工程教育部重点实验室,广西桂林541004
基金项目:基金项目:国家自然科学基金(21261025,81060360);广西省自然科学基金(2010-013064,0991282)和广西师范大学药用资源化学与药物分子工程教育部重点实验室开放基金(CMEMR2011-09).
摘    要:白花丹素(Plumbagin,简称PLN)是从传统中药白花丹中提取出来的具有抗肿瘤活性的萘醌类化合物(2-甲基-5-羟基-1,4萘醌),而白花丹素镧(Ⅲ)配合物PLN-La(Ⅲ)]对MCF-7、BEL7404和NIC-460等肿瘤细胞株具有体外细胞毒活性.采用荧光光谱、同步荧光及紫外光谱法研究了PLN和PLN-La(Ⅲ)与牛血清白蛋白(BSA)的相互作用.结果表明,PLN和PLN-La(Ⅲ)均可通过静态荧光猝灭的方式减弱BSA的荧光强度;同PLN相比,PLN-La(Ⅲ)与BSA的结合常数较小.

关 键 词:白花丹素  镧(Ⅲ)配合物  牛血清白蛋白  相互作用  光谱学研究

Spectroscopic study on the interaction between cytotoxic lanthanum( Ⅲ ) complex of plumbagin with bovine serum albumin
GU Yun qiong,LIANG Wei-jiang,LUO Xu-jian,ZHOU Neng,TAN Ming xiong.Spectroscopic study on the interaction between cytotoxic lanthanum( Ⅲ ) complex of plumbagin with bovine serum albumin[J].Chemical Research,2013(6):605-610.
Authors:GU Yun qiong  LIANG Wei-jiang  LUO Xu-jian  ZHOU Neng  TAN Ming xiong
Institution:1. College of Chemistry and Materials, Yulin Normal University, Yulin 537000, Guangxi, China ; 2. Key Laboratory of Ministry of Education for Chemistry and Molecular Engineering of Medicinal Resources, Guangzi Normal University, Guilin 541004, Guangxi, China)
Abstract:Plumbagin (PLN) was isolated from plumbago zeylanica, an anticancer traditional Chinese medicine. PLN and its complex with La (Ⅲ), La (C11 H7O3 ) 3 ( H2 O) 2 , were then allowed to interact with bovine serum albumin (BSA). The interactions among PLN and La(C11 H7O3)3 (H2O)2 and BSA were investigated by fluorescence spectrometry, synchronous fluorescence spectrometry, and ultraviolet-visible light absorption spectrometry. It was observed that PLN and La( Ⅲ) complex can reduce the fluorescence intensity of BSA by way of static quenching. Besides, the binding constant of La( Ⅲ ) complex with BSA is obviously lower than that of PLN with BSA.
Keywords:plumbagin  La(Ⅲ) complex  bovine serum albumin  interaction  spectroscopic study
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