Biotinylated Platinum(II) Ferrocenylterpyridine Complexes for Targeted Photoinduced Cytotoxicity
作者:Koushambi Mitra、Abhijith Shettar、Paturu Kondaiah、Akhil R. Chakravarty
DOI:10.1021/acs.inorgchem.6b00680
日期:2016.6.6
controlled generation of an active platinum(II) species, which binds to the calf-thymus DNA used for this study. The biotinylated photoactive Fc-tpy complexes showed significant photoinduced cytotoxicity, giving a IC50 value of ∼7 μM in visible light of 400–700 nm with selective uptake in BT474 cancer cells over HBL-100 normal cells. Furthermore, ferrocenyl complexes resulted in light-induced ROS-mediated
生物素化的铂(II)二茂铁基吡啶(Fc-tpy)复合物[Pt(Fc-tpy)(L 1)] Cl(1)和[Pt(Fc-tpy)(L 2)] Cl(2),其中HL 1和制备了HL 2是含生物素的配体,并研究了它们在癌细胞中对正常细胞的靶向光诱导的细胞毒性作用。制备非生物素化的复合物[Pt(Fc-tpy)(L 3)] Cl(3)作为对照,以研究生物素部分在复合物的细胞摄取特性中的作用。三种铂(II)苯基叔吡啶(Ph-tpy)络合物,即[Pt(Ph-tpy)(L 1)] Cl(4),[Pt(Ph-tpy)(L 2)] Cl(5)和[Pt(Ph-tpy)(L 3)] Cl(6)进行了合成和探索,以了解在Ph-tpy上金属结合的Fc-tpy配体作为光引发剂的作用。Fc-tpy复合物在640 nm附近显示出很强的吸收带,而在它们的Ph-tpy类似物中却没有。Fc-tpy络合物(在0.1 M TBAP中为1