Conformation of DNA GG intrastrand cross-link of antitumor oxaliplatin and its enantiomeric analog.

ABSTRACT: Downstream processes that discriminate between DNA adducts of a third generation platinum antitumor drug oxaliplatin and conventional cisplatin are believed to be responsible for the differences in their biological effects. These different biological effects are explained by the ability of oxaliplatin to form DNA adducts more efficient in their biological effects. In this work conformation, recognition by HMG domain protein and DNA polymerization across the major 1,2-GG intrastrand cross-link formed by cisplatin and oxaliplatin in three sequence contexts were compared with the aid of biophysical and biochemical methods. The following major differences in the properties of the cross-links of oxaliplatin and cisplatin were found: i), the formation of the cross-link by oxaliplatin is more del

SUBMITTER: Malina J 

PROVIDER: S-EPMC2084227 | biostudies-literature | 2007 Dec

REPOSITORIES: biostudies-literature