Combinatorially selected guanosine-quartet structure is a potent inhibitor of human immunodeficiency virus envelope-mediated cell fusion.

Abstract

The phosphorothioate oligonucleotide T2G4T2 was identified as an inhibitor of HIV infection in vitro by combinatorial screening of a library of phosphorothioate oligonucleotides that contained all possible octanucleotide sequences. The oligonucleotide forms a parallel-stranded tetrameric guanosine-quartet structure. Tetramer formation and the phosphorothioate backbone are essential for antiviral activity. The tetramer binds to the human immunodeficiency virus envelope protein gp120 at the V3 loop and inhibits both cell-to-cell and virus-to-cell infection.

• Authors: J R Wyatt, T A Vickers, J L Roberson, R W Buckheit Jr, T Klimkait, E DeBaets, P W Davis, B Rayner, J L Imbach, D J Ecker
• Journal: Proceedings of the National Academy of Sciences of the United States of America (Proc Natl Acad Sci U S A) Vol. 91 Issue 4 Pg. 1356-60 (Feb 15 1994) ISSN: 0027-8424 [Print] United States
• PMID: 7906414 (Publication Type: Journal Article)

Chemical References

• Antiviral Agents
• HIV Envelope Protein gp120
• Oligodeoxyribonucleotides
• Thionucleotides
• oligonucleotide 5320

Topics

• Antiviral Agents (pharmacology)
• CD4-Positive T-Lymphocytes (metabolism, microbiology)
• Cell Fusion (drug effects)
• Cells, Cultured
• Dose-Response Relationship, Drug
• HIV Envelope Protein gp120 (metabolism)
• HIV-1 (drug effects, growth & development, pathogenicity)
• Humans
• Oligodeoxyribonucleotides (chemical synthesis, metabolism, pharmacology)
• Thionucleotides (chemical synthesis, metabolism, pharmacology)
• Virulence (drug effects)