Antisense phosphorothioate oligodeoxynucleotides alter HIV type 1 replication in cultured human macrophages and peripheral blood mononuclear cells
- PMID: 7546914
- DOI: 10.1089/aid.1995.11.863
Antisense phosphorothioate oligodeoxynucleotides alter HIV type 1 replication in cultured human macrophages and peripheral blood mononuclear cells
Abstract
The use of antisense oligodeoxynucleotides as antiviral drugs to combat HIV-1 infection may offer an alternative to traditional pharmacological therapies. We compared the effects of two 28-mer antisense phosphorothioate oligodeoxynucleotides [PS-oligo(dN)] with non-sequence-specific controls on HIV-1 replication in long-term human monocyte/macrophage and PBMC cultures. The anti-rev PS-oligo(dN) was complementary to the messenger RNA (mRNA) sequences derived from the overlapping region of the HIV-1 regulatory genes tat and rev, while anti-gag targeted the translational initiation site of the gag mRNA. In vitro cytotoxicity of the PS-oligo(dN) was evaluated at concentrations ranging from 0.1 to 10.0 microM for a period of 20 days. Cell survival was 100% at 0.1 microM, but decreased to 5% at 10.0 microM in relation to the untreated control cultures. Our data demonstrate that replication of both the T cell-tropic and macrophage-tropic HIV-1 strains in primary cells can be inhibited by PS-oligo(dN) in a sequence-specific and dose-dependent manner at concentrations achievable in vivo. However, the sequence-dependent antiviral activity of the utilized PS-oligo(dN) was limited to a window of specificity at concentrations between 0.25 and 1.0 microM.
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