1426845-70-6Relevant articles and documents
Synthesis of site-specific damaged DNA strands by 8-(acetylarylamino)- 2′-deoxyguanosine adducts and effects on various DNA polymerases
Krueger, Sarah,Meier, Chris
, p. 1158 - 1169 (2013/04/10)
Beside the predominately found 8-(arylamino)-2′-dG, 8-(acetylarylamino) damages within DNA-strands may also play an important role in the induction of chemical carcinogenesis. A synthesis pathway leading to these 8-(acetylarylamino)-dG adducts using different aromatic amines has been optimized. The 8-modified dGs were converted into the corresponding phosphoramidites and site-specifically incorporated into different oligonucleotides leading to DNA strands. Lesion-bearing hybrids of these damaged DNA-strands with complementary oligonucleotides were used to study their melting properties and their circular dichroism spectra. It was shown that no EcoRI restriction took place with the damage inside the cleavage site. Finally, three different DNA polymerases were used for primer extension studies. C8-NAc-Arylamine adducts of 2′-deoxyguanosine with various aromatic amines were synthesized by using cross-coupling reactions and converted into 3′-phosphoramidites. Site-specific damaged NarI-, EcoRI- and 20mer-oligonucleotides were prepared by automated DNA-synthesis. Biophysical properties, restriction endonuclease studies and DNA-polymerase assays were performed. Copyright