Formation of DNA adducts by the anticancer drug carboplatin: different nucleotide sequence preferences in vitro and in cells.

Abstract

We have studied the formation of adducts upon carboplatin treatment of isolated DNA and in cells. The major adduct formed in vitro, determined with atomic absorption spectroscopy and enzyme-linked immunosorbent assay, was the intrastrand cross-link cis-Pt(NH3)2d(pGpG)(Pt-GG) (58%). cis-Pt-(NH3)2d(pApG) (Pt-AG) (11%), cis-Pt(NH3)2d(GMP)2 (G-Pt-G) (9%), and… (More)

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