A1 Refereed original research article in a scientific journal
Aminooxy functionalized oligonucleotides: Preparation, on-support derivatization, and postsynthetic attachment to polymer support
Authors: Salo H, Virta P, Hakala H, Prakash TP, Kawasaki AM, Manoharan M, Lonnberg H
Publisher: AMER CHEMICAL SOC
Publication year: 1999
Journal:: Bioconjugate Chemistry
Journal name in source: BIOCONJUGATE CHEMISTRY
Journal acronym: BIOCONJUGATE CHEM
Volume: 10
Issue: 5
First page : 815
Last page: 823
Number of pages: 9
ISSN: 1043-1802
DOI: https://doi.org/10.1021/bc990021m
Abstract
Three novel phosphoramidites, each bearing a phthaloyl-protected aminooxy tail, were prepared and applied in automated oligonucleotide synthesis. After chain assembly, the phthaloyl protection was removed with hydrazinium acetate. Normal succinyl linker turned to be stable under these conditions, and hence the support-bound oligonucleotide could be converted to a pyrene oxime conjugates by reacting with pyrene carbaldehyde or cis-retinal. Standard ammonolytic deprotection then released the deprotected conjugate in solution. Alternatively, the crude aminooxy-tethered oligonucleotide was immobilized to microscopic polymer particles by reacting the aminooxy function with the particle-bound aldehyde or epoxide groups. These immobilized oligonuceotides were shown to serve properly as probes in a mixed phase hybridization assay.
Three novel phosphoramidites, each bearing a phthaloyl-protected aminooxy tail, were prepared and applied in automated oligonucleotide synthesis. After chain assembly, the phthaloyl protection was removed with hydrazinium acetate. Normal succinyl linker turned to be stable under these conditions, and hence the support-bound oligonucleotide could be converted to a pyrene oxime conjugates by reacting with pyrene carbaldehyde or cis-retinal. Standard ammonolytic deprotection then released the deprotected conjugate in solution. Alternatively, the crude aminooxy-tethered oligonucleotide was immobilized to microscopic polymer particles by reacting the aminooxy function with the particle-bound aldehyde or epoxide groups. These immobilized oligonuceotides were shown to serve properly as probes in a mixed phase hybridization assay.
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