Synthesis and biophysical studies of oligonucleotides containing hydroxamate linkages
作者:Kanda S Ramasamy、Liyan He、Vesna Stoisavljevic、Brent Harpham、Wilfried Seifert
DOI:10.1016/s0040-4039(00)00661-4
日期:2000.6
Novel oligonucleotide dimers containing hydroxamate linkages (15 and 16) were synthesized, incorporated into oligonucleotide sequences and studied for their hybridization properties with complementary DNA and RNA targets. The modified oligonucleotides showed similar binding properties and enhanced resistance to exonucleases compared to natural oligonucleotides.
Syntheses and binding studies of oligonucleotides containing N-hydroxycarbamate linkages: potential DNA cleaving antisense oligomers
作者:Hui Li、Marvin J Miller
DOI:10.1016/s0040-4039(00)00662-6
日期:2000.6
An efficient synthesis of N-hydroxycarbamate containing thymidine dimer 9 was accomplished and it was incorporated into automatic DNA syntheses to make thymidine 16mers T*-1, T*-2 and T*-3. Binding abilities of T*-1, T*-2 and T*-3 with poly (dA)-16mer were assayed by melting denaturation (Tm) studies of the corresponding duplexes. Iron binding ability of a thymidine oligomer with N-hydroxycarbamate linkages was studied by MALDI-MS. Nuclease stability assays showed that the modified oligonucleotides have enhanced resistance toward nuclease SI (endonuclease) compared to natural oligonucleotides. (C) 2000 Elsevier Science Ltd. All rights reserved.