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Published on: January 19, 2015
Nuclease stability as dominant factor in the antiviral activity of oligonucleotides directed against HSV-1 IE110
A Peyman1, M Helsberg, G Kretzschmar
1Hoechst Aktiengesellschaft, Central Pharma Research G838, Frankfurt, Germany.
Abstract:
The anti-herpes simplex virus type 1 (anti-HSV-1) efficacy of a series of oligonucleotides was determined as a function of their chemical structure. All oligonucleotides consisted of the same sequence directed against the translation initiation codon of the HSV-1 immediate early gene. The oligonucleotides were modified with phosphorothioate linkage patterns according to various protection strategies against nucleolytic degradation. We show that nuclease resistance is the dominant factor that determines the antiviral efficacy in this series. A minimal protection strategy, consisting of end-capping and pyrimidine protection, has proven to be particularly useful, because it not only yields nuclease-resistant oligonucleotides but also minimizes non-sequence-specific effects.
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