咔咯钴(Ⅲ)配合物与DNA的相互作用及抗肿瘤活性  

DNA-binding and Anti-tumor Activities of Cobalt Corrole Complexes

作　　者：史蕾[1] 杨文聪[1] 曾淑莹 莫婷婷[1] 张召[2] 曹曼丽[1] 刘海洋[2] 

机构地区：[1]广东第二师范学院化学系,广州510303 [2]华南理工大学化学系,广州510641

出　　处：《高等学校化学学报》2016年第6期1059-1068,共10页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21171057,21371059);广东省自然科学基金(批准号:S2012040006270);广东大学生科技创新培育专项资金(攀登计划专项资金);国家级大学生创新创业训练计划项目(批准号:201514278005)资助~~

摘　　要：合成了10-(4-羟基苯基)-5,15-二(五氟苯基)咔咯钴(Ⅲ)配合物(1-Co)和10-(4-吩噻嗪苯基)-5,15-二(五氟苯基)咔咯钴(Ⅲ)配合物(2-Co),并采用核磁共振波谱、质谱和紫外-可见光谱等对其结构进行了表征,利用紫外光谱、荧光光谱、圆二色谱、黏度测试和琼脂糖凝胶电泳等技术研究了配合物1-Co和2-Co与小牛胸腺DNA(ct-DNA)之间的相互作用.结果表明,配合物1-Co和2-Co与DNA之间的作用模式为外部结合,且在光照下均能引发DNA断裂.细胞毒性实验结果表明,配合物1-Co和2-Co具有很低的暗细胞毒性,但在光照条件下均能有效抑制H460,He La,A549等肿瘤细胞株增殖,表明配合物1-Co和2-Co在光动力治疗中具有潜在的应用价值.细胞核染色和线粒体膜电位检测结果表明,在光照条件下配合物2-Co可能是通过氧化损伤线粒体的途径抑制肿瘤细胞增殖.10-（ 4-Hydroxylphenyl）-5,15-bis（ pentafluorophenyl） corrolatocobalt（ 1-Co） and 10-（ 4-phenothiazine）-5,15-bis（ pentafluorophenyl） corrolatocobalt（ 2-Co） were synthesized and characterized by NMR,HR-MS and UV-Vis spectrometries. The interactions of the two complexes with ct-DNA were studied by fluorescence,UV-Vis and circular dichroism spectrometries,viscosity measurements as well as agarose gel electrophoresis. The results suggested that complexes 1-Co and 2-Co both interact with DNA via an outside binding mode. Furthermore,the two cobalt corrole complexes can effectively cleavage DNA under irradiation.MTT experiments indicated that both complexes display low levels of dark toxicity,but have high photocytotoxic activity against H460,He La and A549 cell lines. This implies complexes 1-Co and 2-Co may have potential application in photodynamic therapy（ PDT） as photosensitizer. Through the observation of the nucleus morphological and the measurement of mitochondrial membrane potential,we speculated that complex 2-Co can constrain tumor cell proliferation through the oxidative damage of mitochondria possibly.

关 键 词：咔咯 吩噻嗪 卟啉 DNA 抗肿瘤活性 

分 类 号：O614.81[理学—无机化学]