A strain-specific inhibitor of receptor-bound HIV-1 targets a pocket near the fusion peptide and offers a template for drug design
A strain-specific inhibitor of receptor-bound HIV-1 targets a pocket near the fusion peptide and offers a template for drug design
Abstract Disruption of viral fusion represents a viable, albeit under-explored, target for HIV therapeutics. While studying the receptor-bound envelope glycoprotein conformation by cryo-EM, we identified a pocket near the base of the trimer containing a bound detergent molecule and performed in silico drug screening using a library of drug-like and commercially available molecules. After down-selection, we solved cryo-EM structures that validated binding of two small molecule hits in very similar manners to the predicted binding poses, including interactions with aromatic residues within the fusion peptide. One of the molecules demonstrated low micromolar inhibition of the autologous virus by utilizing a very rare phenylalanine in the fusion peptide and stabilizing the surrounding region. This work demonstrates that small molecules can target the fusion process, providing a new target for anti-HIV therapeutics, and highlights the need to explore how fusion peptide sequence variations affect receptor-mediated conformational states across diverse HIV strains.
Torres Jonathan L.、Santos-Martins Diogo、Ozorowski Gabriel、Forli Stefano、Ward Andrew B.
Department of Integrative Structural and Computational Biology, The Scripps Research Institute||Center for HIV/AIDS Vaccine Immunology and Immunogen Discovery, International AIDS Vaccine Initiative Neutralizing Antibody Center, and Collaboration for AIDS Vaccine DiscoveryDepartment of Integrative Structural and Computational Biology, The Scripps Research InstituteDepartment of Integrative Structural and Computational Biology, The Scripps Research Institute||Center for HIV/AIDS Vaccine Immunology and Immunogen Discovery, International AIDS Vaccine Initiative Neutralizing Antibody Center, and Collaboration for AIDS Vaccine DiscoveryDepartment of Integrative Structural and Computational Biology, The Scripps Research InstituteDepartment of Integrative Structural and Computational Biology, The Scripps Research Institute||Center for HIV/AIDS Vaccine Immunology and Immunogen Discovery, International AIDS Vaccine Initiative Neutralizing Antibody Center, and Collaboration for AIDS Vaccine Discovery
医药卫生理论医学研究方法药学分子生物学
Torres Jonathan L.,Santos-Martins Diogo,Ozorowski Gabriel,Forli Stefano,Ward Andrew B..A strain-specific inhibitor of receptor-bound HIV-1 targets a pocket near the fusion peptide and offers a template for drug design[EB/OL].(2025-03-28)[2025-04-28].https://www.biorxiv.org/content/10.1101/2020.06.11.146654.点此复制
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