Oligonucleotide inhibition of the interaction of HIV-1 Tat protein with the trans -activation responsive region (TAR) of HIV RNA
Identifieur interne : 003831 ( Main/Exploration ); précédent : 003830; suivant : 003832Oligonucleotide inhibition of the interaction of HIV-1 Tat protein with the trans -activation responsive region (TAR) of HIV RNA
Auteurs : Béatrice Mestre [Royaume-Uni] ; Andrey Arzumanov [Royaume-Uni] ; Mohinder Singh [Royaume-Uni] ; Florence Boulmé [France] ; Simon Litvak [France] ; Michael J. Gait [Royaume-Uni]Source :
- BBA - Gene Structure and Expression [ 0167-4781 ] ; 1999.
English descriptors
- Teeft :
- Acta, Analogue, Antisense, Antisense oligonucleotides, Apical, Apical loop, Assay, Bbaexp, Biochimica, Biophysica, Biophysica acta, Bulge region, Chem, Control oligonucleotides, Hoechst, Human virus, Human virus type, Inhibition, Inhibitor, Karn, Lter, Lter binding, Lter binding assay, Lter binding interference assays, Lter retention, Mestre, Mobility shift analysis, Mobility shift assay, Native polyacrylamide, Neomycin, Nucleic acids, Oligodeoxyribonucleotides, Oligonucleotide, Oligonucleotide inhibition, Oligonucleotides, Oligoribonucleotide, Oligoribonucleotides, Oxford university press, Peptide, Peptide binding, Practical approach, Pyrimidine, Recognition sequence, Responsive region, Retarded band, Room temperature, Synthetic oligonucleotides, Transcription, Tris acetate.
Abstract
Abstract: The interaction of HIV-1 Tat protein with its recognition sequence, the trans-activation responsive region TAR is a potential target for drug discovery against HIV infection. We show by use of an in vitro competition filter binding interference assay that synthetic oligodeoxyribonucleotides complementary to the HIV-1 TAR RNA apical stem-loop and bulge region inhibit the binding of Tat protein or a Tat peptide (residues 37–72) better than two small molecules that have been shown to bind TAR RNA, Hoechst 33258 and neomycin B. The inhibition is not sensitive to length between 13 and 16 residues or precise positioning but shorter oligonucleotides are less effective. Enhanced inhibition was obtained for a 16-mer 2′-O-methyl oligoribonucleotide but not for C5-propyne pyrimidine-substituted oligonucleotides. Control non-antisense oligonucleotides were occasionally also effective in filter binding interference but only the complementary antisense 2′-O-methyl oligoribonucleotide was effective in gel mobility shift assays in direct TAR binding or in interference with Tat peptide binding to the TAR stem-loop. This is the first demonstration of effective inhibition of the Tat-TAR interaction by nuclease-stabilized oligonucleotide analogues.
Url:
DOI: 10.1016/S0167-4781(99)00019-6
Affiliations:
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Gait</name><name sortKey="Singh, Mohinder" sort="Singh, Mohinder" uniqKey="Singh M" first="Mohinder" last="Singh">Mohinder Singh</name></country><country name="France"><region name="Nouvelle-Aquitaine"><name sortKey="Boulme, Florence" sort="Boulme, Florence" uniqKey="Boulme F" first="Florence" last="Boulmé">Florence Boulmé</name></region><name sortKey="Litvak, Simon" sort="Litvak, Simon" uniqKey="Litvak S" first="Simon" last="Litvak">Simon Litvak</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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