title: Properties of quadruplex oligonucleotides with anti-HIV-1 activity.
abstract: A phosphorothioate oligonucleotide composed of deoxyguanosine and thymidine was identified as an inhibitor of HIV-1 infection at an early stage of the HIV-1 replication cycle in vitro. The phosphodiester and phosphorothioate chimeric oligonucleotides were found to be potent inhibitors of several steps of HIV-1 infection: the interaction with CD4 and the chemokine receptor, the reverse transcriptase activity, and the integrase activity. To elucidate the mechanism of the anti-HIV-1 function of these oligonucleotides in terms of their structure, we focussed on their G-serial sequences and investigated the characteristics of their solution structures. These oligonucleotides were proved to be able to adopt G-quadruplex structures by UV and CD measurements. We presume that the anti-HIV-1 activities of these oligonucleotides are consequently attributable to G-quadruplex formation.
authors.affiliation: High Technology Research Center, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Tamura
authors.forename: M
authors.initials: M
authors.lastname: Yoshida
authors.forename: J
authors.initials: J
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Hiratou
authors.forename: N
authors.initials: N
authors.lastname: Miyano-Kurosaki
authors.forename: K
authors.initials: K
authors.lastname: Takai
authors.forename: H
authors.initials: H
authors.lastname: Takaku
mesh_terms: D019380:Anti-HIV Agents / Q000737:chemistry* / Q000494:pharmacology*; D001483:Base Sequence; D015497:HIV-1 / Q000187:drug effects* / Q000502:physiology; D006801:Humans; D066298:In Vitro Techniques; D009690:Nucleic Acid Conformation; D009838:Oligodeoxyribonucleotides / Q000737:chemistry* / Q000494:pharmacology*; D013053:Spectrophotometry; D013873:Thionucleotides / Q000737:chemistry / Q000494:pharmacology; D014779:Virus Replication / Q000187:drug effects
chemical_list: D019380:Anti-HIV Agents; D009838:Oligodeoxyribonucleotides; D013873:Thionucleotides