Biologically active oligodeoxyribonucleotides. Part 11: The least phosphate-modification of quadruplex-forming hexadeoxyribonucleotide TGGGAG, bearing 3-and 5-end-modification, with anti-HIV-1 activity.
Identifieur interne : 002649 ( PubMed/Corpus ); précédent : 002648; suivant : 002650Biologically active oligodeoxyribonucleotides. Part 11: The least phosphate-modification of quadruplex-forming hexadeoxyribonucleotide TGGGAG, bearing 3-and 5-end-modification, with anti-HIV-1 activity.
Auteurs : M. Koizumi ; R. Koga ; H. Hotoda ; T. Ohmine ; H. Furukawa ; T. Agatsuma ; T. Nishigaki ; K. Abe ; T. Kosaka ; S. Tsutsumi ; J. Sone ; M. Kaneko ; S. Kimura ; K. ShimadaSource :
- Bioorganic & medicinal chemistry [ 0968-0896 ] ; 1998.
English descriptors
- KwdEn :
- Anti-HIV Agents (blood), Anti-HIV Agents (chemical synthesis), Anti-HIV Agents (chemistry), Anti-HIV Agents (pharmacology), Base Sequence, Benzyl Compounds, Cell Survival (drug effects), Circular Dichroism, Drug Design, Drug Stability, HIV-1 (drug effects), Humans, Models, Molecular, Molecular Structure, Nucleic Acid Conformation, Oligodeoxyribonucleotides (blood), Oligodeoxyribonucleotides (chemical synthesis), Oligodeoxyribonucleotides (chemistry), Oligodeoxyribonucleotides (pharmacology), Structure-Activity Relationship.
- MESH :
- chemical , blood : Anti-HIV Agents, Oligodeoxyribonucleotides.
- chemical , chemical synthesis : Anti-HIV Agents, Oligodeoxyribonucleotides.
- chemical , chemistry : Anti-HIV Agents, Oligodeoxyribonucleotides.
- chemical , pharmacology : Anti-HIV Agents, Oligodeoxyribonucleotides.
- drug effects : Cell Survival, HIV-1.
- Base Sequence, Benzyl Compounds, Circular Dichroism, Drug Design, Drug Stability, Humans, Models, Molecular, Molecular Structure, Nucleic Acid Conformation, Structure-Activity Relationship.
Abstract
We have found that a hexadeoxyribonucleotide (5'TGGGAG3', R-95288), Koizumi, M. et al. Bioorganic & Medicinal Chemistry, 1997, 5, 2235, bearing a 3,4-dibenzyloxybenzyl (3,4-DBB) group at the 5'-end and a 2-hydroxyethylphosphate at the 3'-end, has high anti-HIV-1 activity and the least cytotoxicity in vitro and in vivo. In order to synthesize more potent hexadeoxyribonucleotides, we substituted phosphodiester (P-O) bonds in the 6-mer with the least phosphorothioate (P-S), phosphoramidate (P-N), or methylphosphonate (P-Me) bonds. When more than two P-N or P-Me bonds were introduced into a 6-mer, the phosphate-modified 6-mers had weak or no anti-HIV- activity, in spite of quadruplex structure formation. However, when P-S bonds were substituted for P-O bonds, anti-HIV-1 activity of their 6-mers did not dramatically decrease, compared with compounds substituted with P-N or P-Me bonds. The results suggest that the formation of a quadruplex structure is not always sufficient for anti-HIV-1 activity of the 6-mer, and that net negative charges derived from P-O or P-S bonds in the quadruplex are important for anti-HIV-1 activity. Moreover, among various phosphate-modified ODNs, we found that the anti-HIV-1 activity of ODN PS7 with only one P-S bond was the same as that of R-95288, both having a high stability in human plasma.
DOI: 10.1016/s0968-0896(98)80021-7
PubMed: 9925303
Links to Exploration step
pubmed:9925303Le document en format XML
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<author><name sortKey="Koizumi, M" sort="Koizumi, M" uniqKey="Koizumi M" first="M" last="Koizumi">M. Koizumi</name>
<affiliation><nlm:affiliation>Exploratory Chemistry Research Lab., Sankyo Co., Ltd, Tokyo, Japan. koizum@shina.sankyo.co.jp</nlm:affiliation>
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<author><name sortKey="Koga, R" sort="Koga, R" uniqKey="Koga R" first="R" last="Koga">R. Koga</name>
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<author><name sortKey="Hotoda, H" sort="Hotoda, H" uniqKey="Hotoda H" first="H" last="Hotoda">H. Hotoda</name>
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<author><name sortKey="Ohmine, T" sort="Ohmine, T" uniqKey="Ohmine T" first="T" last="Ohmine">T. Ohmine</name>
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<author><name sortKey="Furukawa, H" sort="Furukawa, H" uniqKey="Furukawa H" first="H" last="Furukawa">H. Furukawa</name>
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<author><name sortKey="Agatsuma, T" sort="Agatsuma, T" uniqKey="Agatsuma T" first="T" last="Agatsuma">T. Agatsuma</name>
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<author><name sortKey="Nishigaki, T" sort="Nishigaki, T" uniqKey="Nishigaki T" first="T" last="Nishigaki">T. Nishigaki</name>
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<author><name sortKey="Abe, K" sort="Abe, K" uniqKey="Abe K" first="K" last="Abe">K. Abe</name>
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<author><name sortKey="Kosaka, T" sort="Kosaka, T" uniqKey="Kosaka T" first="T" last="Kosaka">T. Kosaka</name>
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<author><name sortKey="Sone, J" sort="Sone, J" uniqKey="Sone J" first="J" last="Sone">J. Sone</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Biologically active oligodeoxyribonucleotides. Part 11: The least phosphate-modification of quadruplex-forming hexadeoxyribonucleotide TGGGAG, bearing 3-and 5-end-modification, with anti-HIV-1 activity.</title>
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<author><name sortKey="Ohmine, T" sort="Ohmine, T" uniqKey="Ohmine T" first="T" last="Ohmine">T. Ohmine</name>
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<author><name sortKey="Furukawa, H" sort="Furukawa, H" uniqKey="Furukawa H" first="H" last="Furukawa">H. Furukawa</name>
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<term>Base Sequence</term>
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<term>Nucleic Acid Conformation</term>
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<term>Oligodeoxyribonucleotides (chemical synthesis)</term>
<term>Oligodeoxyribonucleotides (chemistry)</term>
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<term>Structure-Activity Relationship</term>
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<term>Oligodeoxyribonucleotides</term>
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<term>Oligodeoxyribonucleotides</term>
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<front><div type="abstract" xml:lang="en">We have found that a hexadeoxyribonucleotide (5'TGGGAG3', R-95288), Koizumi, M. et al. Bioorganic & Medicinal Chemistry, 1997, 5, 2235, bearing a 3,4-dibenzyloxybenzyl (3,4-DBB) group at the 5'-end and a 2-hydroxyethylphosphate at the 3'-end, has high anti-HIV-1 activity and the least cytotoxicity in vitro and in vivo. In order to synthesize more potent hexadeoxyribonucleotides, we substituted phosphodiester (P-O) bonds in the 6-mer with the least phosphorothioate (P-S), phosphoramidate (P-N), or methylphosphonate (P-Me) bonds. When more than two P-N or P-Me bonds were introduced into a 6-mer, the phosphate-modified 6-mers had weak or no anti-HIV- activity, in spite of quadruplex structure formation. However, when P-S bonds were substituted for P-O bonds, anti-HIV-1 activity of their 6-mers did not dramatically decrease, compared with compounds substituted with P-N or P-Me bonds. The results suggest that the formation of a quadruplex structure is not always sufficient for anti-HIV-1 activity of the 6-mer, and that net negative charges derived from P-O or P-S bonds in the quadruplex are important for anti-HIV-1 activity. Moreover, among various phosphate-modified ODNs, we found that the anti-HIV-1 activity of ODN PS7 with only one P-S bond was the same as that of R-95288, both having a high stability in human plasma.</div>
</front>
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<Abstract><AbstractText>We have found that a hexadeoxyribonucleotide (5'TGGGAG3', R-95288), Koizumi, M. et al. Bioorganic & Medicinal Chemistry, 1997, 5, 2235, bearing a 3,4-dibenzyloxybenzyl (3,4-DBB) group at the 5'-end and a 2-hydroxyethylphosphate at the 3'-end, has high anti-HIV-1 activity and the least cytotoxicity in vitro and in vivo. In order to synthesize more potent hexadeoxyribonucleotides, we substituted phosphodiester (P-O) bonds in the 6-mer with the least phosphorothioate (P-S), phosphoramidate (P-N), or methylphosphonate (P-Me) bonds. When more than two P-N or P-Me bonds were introduced into a 6-mer, the phosphate-modified 6-mers had weak or no anti-HIV- activity, in spite of quadruplex structure formation. However, when P-S bonds were substituted for P-O bonds, anti-HIV-1 activity of their 6-mers did not dramatically decrease, compared with compounds substituted with P-N or P-Me bonds. The results suggest that the formation of a quadruplex structure is not always sufficient for anti-HIV-1 activity of the 6-mer, and that net negative charges derived from P-O or P-S bonds in the quadruplex are important for anti-HIV-1 activity. Moreover, among various phosphate-modified ODNs, we found that the anti-HIV-1 activity of ODN PS7 with only one P-S bond was the same as that of R-95288, both having a high stability in human plasma.</AbstractText>
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