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A small-molecule, nonpeptide CCR5 antagonist with highly potent and selective anti-HIV-1 activity

Open access
Baba, Masanori, Nishimura, Osamu, Kanzaki, Naoyuki, Okamoto, Mika, Sawada, Hidekazu, Iizawa, Yuji, Shiraishi, Mitsuru, Aramaki, Yoshio, Okonogi, Kenji, Ogawa, Yasuaki, Meguro, Kanji, Fujino, Masahiko·1999·Proceedings of the National Academy of Sciences

Abstract

The β-chemokine receptor CCR5 is considered to be an attractive target for inhibition of macrophage-tropic (CCR5-using or R5) HIV-1 replication because individuals having a nonfunctional receptor (a homozygous 32-bp deletion in the CCR5 coding region) are apparently normal but resistant to infection with R5 HIV-1. In this study, we found that TAK-779, a nonpeptide compound with a small molecular weight (Mr 531.13), antagonized the binding of RANTES (regulated on activation, normal T cell expressed and secreted) to CCR5-expressing Chinese hamster ovary cells and blocked CCR5-mediated Ca 2+signaling at nanomolar concentrations. The inhibition of β-chemokine receptors by TAK-779 appeared to be specific to CCR5 because the compound antagonized CCR2b to a lesser extent but did not affect CCR1, CCR3, or CCR4. Consequently, TAK-779 displayed highly potent and selective inhibition of R5 HIV-1 replication without showing any cytotoxicity to the host cells. The compound inhibited the replication of R5 HIV-1 clinical isolates as well as a laboratory strain at a concentration of 1.6–3.7 nM in peripheral blood mononuclear cells, though it was totally inactive against T-cell line-tropic (CXCR4-using or X4) HIV-1.

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Crossref · 10.1073/pnas.96.10.5698

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Metadata

Authors
Baba, M., Nishimura, O., Kanzaki, N., Okamoto, M., Sawada, H., Iizawa, Y., Shiraishi, M., Aramaki, Y., Okonogi, K., Ogawa, Y., Meguro, K., & Fujino, M.
Venue
Proceedings of the National Academy of Sciences
Published
1999-05-11
Volume
96
Issue
10
Pages
5698-5703
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2140478082
Cited by
751
References
1
FWCI
19.69
Type
journal article
Language
en
Open access
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CoChat. (2026). Citation check: A small-molecule, nonpeptide CCR5 antagonist with highly potent and selective anti-HIV-1 activity. https://app.cochat.ai/papers/10.1073/pnas.96.10.5698
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Baba, M., Nishimura, O., Kanzaki, N., Okamoto, M., Sawada, H., Iizawa, Y., Shiraishi, M., Aramaki, Y., Okonogi, K., Ogawa, Y., Meguro, K., & Fujino, M. (1999). A small-molecule, nonpeptide CCR5 antagonist with highly potent and selective anti-HIV-1 activity. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.96.10.5698

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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