title: The sequence specificity of the anti-tumour drug, cisplatin, in telomeric DNA sequences compared with consecutive guanine DNA sequences.
abstract: The sequence specificity of the anti-tumour drug, cisplatin, was determined in a DNA sequence that contained seven telomeric repeats and a run of ten consecutive guanine bases. Cisplatin preferentially forms DNA adducts at consecutive guanine sequences. Hence these DNA sequences were examined in order to gain an insight into the important human genomic regions that are damaged by cisplatin. A polymerase stop/linear amplification assay was employed with an automated DNA capillary sequencer and laser-induced fluorescence detection to quantitatively determine the DNA sequence specificity of cisplatin in a plasmid clone containing seven telomeric repeats and a sequence of ten consecutive guanine bases. It was found that cisplatin preferentially damaged the ten consecutive guanine sequence although the telomeric DNA sequences were also a major site of cisplatin adduct formation.
authors: School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia. v.murray@unsw.edu.au
authors: Vincent
authors: V
authors: Murray
authors: Niruba
authors: N
authors: Kandasamy
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D001483:Base Sequence; D002945:Cisplatin / Q000494:pharmacology*; D004247:DNA / Q000737:chemistry* / Q000235:genetics; D018736:DNA Adducts / Q000737:chemistry*; D004249:DNA Damage / Q000187:drug effects; D006147:Guanine / Q000737:chemistry*; D006801:Humans; D008969:Molecular Sequence Data; D010957:Plasmids / Q000187:drug effects; D012680:Sensitivity and Specificity; D017422:Sequence Analysis, DNA / Q000379:methods; D016615:Telomere / Q000187:drug effects* / Q000235:genetics
chemical_list: D000970:Antineoplastic Agents; D018736:DNA Adducts; D006147:Guanine; D004247:DNA; D002945:Cisplatin