Specific Conformational Change in Giant DNA Caused by Anticancer Tetrazolato-Bridged Dinuclear Platinum(II) Complexes: Middle-Length Alkyl Substituents Exhibit Minimum Effect
作者:Seiji Komeda、Hiroki Yoneyama、Masako Uemura、Akira Muramatsu、Naoto Okamoto、Hiroaki Konishi、Hiroyuki Takahashi、Akimitsu Takagi、Wakao Fukuda、Tadayuki Imanaka、Toshio Kanbe、Shinya Harusawa、Yuko Yoshikawa、Kenichi Yoshikawa
DOI:10.1021/acs.inorgchem.6b02239
日期:2017.1.17
N3)]2+ (5-H-Y), which is a tetrazolato-bridged dinuclear platinum(II) complex, were prepared by substituting a linear alkyl chain moiety at C5 of the tetrazolate ring. The general formula for the derivatives is [cis-Pt(NH3)2}2(μ-OH)(μ-5-R-tetrazolato-N2,N3)]2+, where R is (CH2)nCH3 and n = 0 to 8 (complexes 1–9). The cytotoxicity of complexes 1–4 in NCI-H460 human non-small-cell lung cancer cells decreased
具有高抗肿瘤活性的化合物[ cis -Pt(NH 3)2 } 2(μ-OH)(μ-tetrazolato- N2,N3)] 2+(5-HY)的衍生物,它是四氮唑桥连的双核通过在四唑酸酯环的C5处取代线性烷基链部分来制备铂(II)配合物。衍生物的通式为[顺式-Pt(NH 3)2 } 2(μ-OH)(μ-5-R-四唑-N2,N3)] 2+,其中R为(CH 2)n CH 3和Ñ = 0至8(配合物1 - 9)。复合物的细胞毒性1 - 4在NCI-H460人非小细胞肺癌细胞与增加烷基链长度减小,并且那些配合物的5 - 9随着烷基链长度的增加。也就是说,发现复合物1 – 9的体外细胞毒性与烷基链长呈U形联系。这种U形缔合可归因于细胞内积累的程度。尽管圆二色光谱测量表明配合物1 – 9在DNA的二级结构中诱导了相当的构象变化,四唑酮桥连的复合物诱导了不同程度的DNA紧缩,如荧光显微镜检测到的单个D