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Modulating viral gene expression by aptamers to RNA structures.

Jean-Jacques Toulmé·Fabien Darfeuille·Gaëlle Kolb·Sandrine Chabas·Cathy Staedel
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Abstract

Oligonucleotides exhibiting a strong affinity and a high specificity for RNA hairpins were obtained by in vitro selection. Such oligomers give rise to loop-loop complexes with the target hairpins: the trans-activation responsive (TAR) element of the Human Immunodeficiency virus-1 (HIV-1) or subdomains of the Hepatitis C virus (HCV) mRNA. Chemically modified derivatives of an antiTAR aptamer were shown to compete out the binding of the viral protein Tat and to selectively inhibit the in vitro TAR-dependent transcription of a reporter gene. In addition, antisense oligomers derived from sequences selected against the domain IIId of the HCV internal ribosome entry site were shown to specifically block translation both in a cell-free assay and in cultured cells.

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AnimalsGene Expression Regulation, ViralHIV Long Terminal RepeatHepacivirusHumansOligonucleotidesProtein BiosynthesisProtein Structure, TertiaryRNA, ViralViral ProteinsJournal ArticleResearch Support, Non-U.S. Gov'tReview

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Jean-Jacques Toulmé, Fabien Darfeuille, Gaëlle Kolb, Sandrine Chabas, Cathy Staedel. Modulating viral gene expression by aptamers to RNA structures.. https://doi.org/10.1016/s0248-4900(03)00036-4

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