diseases. We found that platinum(II)–gadolinium(III) complexes with the formula [Pt(NH3)2Cl}2GdL](NO3)2 possess such properties. The Gd center is stable in solution and the cytoplasm, whereas the Pt centers undergo ligand substitution in cancer cells. The Pt units interact with DNA and significantly promote the cellular uptake of Gd complexes. The cytotoxicity of the Pt–Gd complexes is comparable to that
治疗试剂是新兴的能够同时治疗和诊断疾病的多功能分子。我们发现具有式[Pt(NH 3)2 Cl} 2 GdL](NO 3)2的
铂(II)-d(III)配合物具有这样的性质。Gd中心在溶液和细胞质中稳定,而Pt中心在癌细胞中经历
配体取代。Pt单位与DNA相互作用,并显着促进细胞对Gd络合物的吸收。在高浓度(≥0.1 m M)下,Pt-Gd复合物的细胞毒性与
顺铂相当,并且其质子弛豫性高于商业磁共振成像(MRI)造影剂Gd-
DTPA。B6小鼠的T 1加权MRI显示,这些复合物可以揭示体内
铂药物的积累。它们的细胞毒性和成像功能使Pt-Gd复合物有望成为治疗癌症的治疗药物。