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  • Title: Lipophilic Pt(II) complexes with selective efficacy against cisplatin-resistant testicular cancer cells.
    Author: Biersack B, Dietrich A, Zoldakova M, Kalinowski B, Paschke R, Schobert R, Mueller T.
    Journal: J Inorg Biochem; 2011 Dec; 105(12):1630-7. PubMed ID: 22071088.
    Abstract:
    A series of dichloridoplatinum(II) complexes with selective and high cytotoxicity [IC(90)(96h)≤3 μM] against cisplatin-resistant 1411HP testicular cancer cells were identified. They bear stationary 6-aminomethylnicotinate or 2,4-diaminobutyrate ligands esterified with lipophilic terpenyl residues, i.e., (-)/(+)-menthyl, (+)-cedrenyl, (-)-menthoxypropyl, or with a decyl-tethered 1,1,2-triphenylethene. They accumulated to a larger extent in 1411HP cells than in cells of the cisplatin-sensitive H12.1 germ cell tumour. Their mechanism of apoptosis induction differed from that of cisplatin by being independent of p53 and of caspase-3 activation and by an early loss of the mitochondrial membrane potential. The new complexes are promising candidates for the treatment of cisplatin-resistant testicular tumours.
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