- High-throughput chemical modification of oligonucleotides for systematic structure-activity relationship evaluation.
High-throughput chemical modification of oligonucleotides for systematic structure-activity relationship evaluation.
Bioconjugate chemistry (2014-11-15)
Daniel Zewge, Francis Gosselin, Denise M Kenski, Jenny Li, Vasant Jadhav, Yu Yuan, Sandhya S Nerurkar, David M Tellers, W Michael Flanagan, Ian W Davies
PMID25398098
ABSTRACT
Chemical modification of siRNA is achieved in a high-throughput manner (96-well plate format) by copper catalyzed azide-alkyne cycloadditions. This transformation can be performed in one synthetic operation at up to four positions with complete specificity, good yield, and acceptable purity. As demonstrated here, this approach extends the current synthetic options for oligonucleotide modifications and simultaneously facilitates the systematic, rapid biological evaluation of modified siRNA.
MATERIALS
Product Number
Brand
Product Description
Sigma-Aldrich
Trichloroacetic acid, suitable for electrophoresis, suitable for fixing solution (for IEF and PAGE gels), ≥99%
Sigma-Aldrich
Water, for embryo transfer, sterile-filtered, BioXtra, suitable for mouse embryo cell culture
Sigma-Aldrich
Methanol, suitable for HPLC, gradient grade, suitable as ACS-grade LC reagent, ≥99.9%
Imidazole, European Pharmacopoeia (EP) Reference Standard
Pure Water Density Standard, UKAS ISO/IEC17025 and ISO Guide 34 certified, density: 0.9982 g/mL at 20 °C, density: 0.9970 g/mL at 25 °C
Pure Water Density Standard, UKAS ISO/IEC17025 and ISO Guide 34 certified, density: 0.9982 g/mL at 20 °C, density: 0.9970 g/mL at 25 °C
Ondansetron impurity E, European Pharmacopoeia (EP) Reference Standard
Supelco
Residual Solvent - Acetonitrile(solution in DMSO), Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Acetonitrile solution, contains 0.05 % (w/v) ammonium formate, 5 % (v/v) water, 0.1 % (v/v) formic acid, suitable for HPLC