849354-91-2Relevant academic research and scientific papers
Unprecedented C-selective interstrand cross-linking through in situ oxidation of furan-modified oligodeoxynucleotides
De Beeck, Marieke Op,Madder, Annemieke
experimental part, p. 796 - 807 (2011/04/15)
Chemical reagents that form interstrand cross-links have been used for a long time in cancer therapy. They covalently link two strands of DNA, thereby blocking transcription. Cross-link repair enzymes, however, can restore the transcription processes, causing resistance to certain anti-cancer drugs. The mechanism of these cross-link repair processes has not yet been fully revealed. One of the obstacles in this study is the lack of sufficient amounts of well-defined, stable, cross-linked duplexes to study the pathways of cross-link repair enzymes. Our group has developed a cross-link strategy where a furan moiety is incorporated into oligodeoxynucleotides (ODNs). These furan-modified nucleic acids can form interstrand crosslinks upon selective furan oxidation with N-bromosuccinimide.We here report on the incorporation of the furan moiety at the 20-position of a uridine through an amido or ureido linker. The resulting modified ODNs display an unprecedented selectivity for cross-linking toward a cytidine opposite the modified residue, forming one specific cross-linked duplex, which could be isolated in good yield. Furthermore, the structure of the formed cross-linked duplexes could be unambiguously characterized.
Fine-tuning furan toxicity: Fast and quantitative DNA interchain cross-link formation upon selective oxidation of a furan containing oligonucleotide
Halila, Sami,Velasco, Trinidad,De Clercq, Pierre,Madder, Annemieke
, p. 936 - 938 (2007/10/03)
Oligonucleotides containing a furan modified internal nucleoside have been synthesized; selective in situ oxidation of the furan moiety to a reactive enal species in the presence of a complementary DNA strand gives rise to fast and efficient formation of an interstrand cross-link. The Royal Society of Chemistry 2005.
