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M9610202.TXT
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1996-01-30
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Document 0202
DOCN M9610202
TI Sequence-specific inhibition of human immunodeficiency virus (HIV)
reverse transcription by antisense oligonucleotides: comparative study
in cell-free assays and in HIV-infected cells.
DT 9601
AU Bordier B; Perala-Heape M; Degols G; Lebleu B; Litvak S; Sarih-Cottin L;
Helene C; Institut de Biochimie Cellulaire et Neurochimie, Centre
National; de la Recherche Scientifique, Bordeaux, France.
SO Proc Natl Acad Sci U S A. 1995 Sep 26;92(20):9383-7. Unique Identifier :
AIDSLINE MED/96016173
AB We have investigated two regions of the viral RNA of human
immunodeficiency virus type 1 (HIV-1) as potential targets for antisense
oligonucleotides. An oligodeoxynucleotide targeted to the U5 region of
the viral genome was shown to block the elongation of cDNA synthesized
by HIV-1 reverse transcriptase in vitro. This arrest of reverse
transcription was independent of the presence of RNase H activity
associated with the reverse transcriptase enzyme. A second
oligodeoxynucleotide targeted to a site adjacent to the primer binding
site inhibited reverse transcription in an RNase H-dependent manner.
These two oligonucleotides were covalently linked to a poly(L-lysine)
carrier and tested for their ability to inhibit HIV-1 infection in cell
cultures. Both oligonucleotides inhibited virus production in a
sequence- and dose-dependent manner. PCR analysis showed that they
inhibited proviral DNA synthesis in infected cells. In contrast, an
antisense oligonucleotide targeted to the tat sequence did not inhibit
proviral DNA synthesis but inhibited viral production at a later step of
virus development. These experiments show that antisense
oligonucleotides targeted to two regions of HIV-1 viral RNA can inhibit
the first step of viral infection--i.e., reverse transcription--and
prevent the synthesis of proviral DNA in cell cultures.
DE Base Sequence Cell Line Cell-Free System Comparative Study DNA
Primers DNA Replication Human HIV-1/*ENZYMOLOGY Kinetics Molecular
Sequence Data Oligonucleotides, Antisense/*PHARMACOLOGY Polylysine
Polymerase Chain Reaction Proviruses/ENZYMOLOGY Reverse Transcriptase
Inhibitors/*PHARMACOLOGY Ribonuclease H, Calf Thymus/METABOLISM
RNA-Directed DNA Polymerase/*DRUG EFFECTS RNA,
Viral/CHEMISTRY/METABOLISM Support, Non-U.S. Gov't JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).