Abstract
Gene-expression modulator 91 (GEM91) is a 25-nt antisense oligodeoxynucleotide phosphorothioate complementary to the Gag mRNA of human immunodeficiency virus type 1 (HIV-1). Cellular uptake and intracellular distribution of GEM91 within cells suggest that this oligomer is readily available for antisense activity. GEM91 inhibited HIV-1 replication in a dose-dependent and sequence-specific manner. In a comparative study, 2 microM GEM91 was as effective as 5 microM 3'-azido-3'-deoxythymidine in blocking virus replication during the 28-day treatment of an HIV-1-infected T-cell line. GEM91 also completely inhibited (> 99%) the growth of three different HIV-1 isolates in primary lymphocytes and prevented the cytopathic effect of the virus in primary CD4+ T cells. Similarly, treatment with GEM91 for 3 weeks of HIV-1/BaL-infected primary macrophages blocked virus replication. Based on GEM91 anti-HIV-activity, safety, and pharmacokinetic profile in animals, a clinical trial was started using this compound as an antisense oligonucleotide drug for the treatment of the acquired immunodeficiency syndrome.
MeSH Terms
Antigens, CD/biosynthesis
Antiviral Agents/toxicity
Base Sequence
Biological Transport
CD4 Antigens/biosynthesis
CD8 Antigens/biosynthesis
Cell Line
Cells, Cultured
Flow Cytometry
Gene Products, gag/biosynthesis
Genes, gag
HIV-1/drug effects,physiology
Humans
Kinetics
Lymphocytes/cytology,drug effects,microbiology
Macrophages/cytology,microbiology
Molecular Sequence Data
Oligodeoxyribonucleotides, Antisense
Oligonucleotides, Antisense/pharmacokinetics,toxicity
RNA, Messenger/drug effects
Thionucleotides/pharmacokinetics,toxicity
Virus Replication/drug effects
Chemicals
Antigens, CD
Antiviral Agents
CD4 Antigens
CD8 Antigens
Gene Products, gag
Oligodeoxyribonucleotides, Antisense
Oligonucleotides, Antisense
RNA, Messenger
Thionucleotides
GEM91
Authors & Affiliations
8 authors, click to expand affiliations / ORCID
Lisziewicz J
Laboratory of Tumor Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892.
Sun D
Weichold F F
Thierry A R
Lusso P
Tang J
Gallo R C
Agrawal S
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