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CD4 downregulation precedes Env expression and protects HIV-1-infected cells from ADCC mediated by non-neutralizing antibodies.
Richard J, Sannier G, Zhu L, Prévost J, Marchitto L, Benlarbi M, Beaudoin-Bussières G, Kim H, Sun Y, Chatterjee D, Medjahed H, Bourassa C, Delgado G-G, Dubé M, Kirchhoff F, Hahn BH, Kumar P, Kaufmann DE, Finzi A. Richard J, et al. mBio. 2024 Nov 13;15(11):e0182724. doi: 10.1128/mbio.01827-24. Epub 2024 Oct 7. mBio. 2024. PMID: 39373535 Free PMC article.
The asymmetric opening of HIV-1 Env by a potent CD4 mimetic enables anti-coreceptor binding site antibodies to mediate ADCC.
Richard J, Grunst MW, Niu L, Díaz-Salinas MA, Tolbert WD, Marchitto L, Zhou F, Bourassa C, Yang D, Chiu TJ, Chen HC, Benlarbi M; Guillaume-Beaudoin-Buissières; Gottumukkala S, Li W, Dionne K, Bélanger É, Chatterjee D, Medjahed H, Hendrickson WA, Sodroski J, Lang ZC, Morton AJ, Huang RK, Matthies D, Smith AB 3rd, Mothes W, Munro JB, Pazgier M, Finzi A. Richard J, et al. bioRxiv [Preprint]. 2024 Aug 27:2024.08.27.609961. doi: 10.1101/2024.08.27.609961. bioRxiv. 2024. PMID: 39253431 Free PMC article. Preprint.
The combination of three CD4-induced antibodies targeting highly conserved Env regions with a small CD4-mimetic achieves potent ADCC activity.
Marchitto L, Richard J, Prévost J, Tauzin A, Yang D, Chiu T-J, Chen H-C, Díaz-Salinas MA, Nayrac M, Benlarbi M, Beaudoin-Bussières G, Anand SP, Dionne K, Bélanger É, Chatterjee D, Medjahed H, Bourassa C, Tolbert WD, Hahn BH, Munro JB, Pazgier M, Smith AB 3rd, Finzi A. Marchitto L, et al. J Virol. 2024 Oct 22;98(10):e0101624. doi: 10.1128/jvi.01016-24. Epub 2024 Sep 9. J Virol. 2024. PMID: 39248460 Free PMC article.
Small CD4 mimetics sensitize HIV-1-infected macrophages to antibody-dependent cellular cytotoxicity.
Laumaea A, Marchitto L, Ding S, Beaudoin-Bussières G, Prévost J, Gasser R, Chatterjee D, Gendron-Lepage G, Medjahed H, Chen HC, Smith AB 3rd, Ding H, Kappes JC, Hahn BH, Kirchhoff F, Richard J, Duerr R, Finzi A. Laumaea A, et al. Cell Rep. 2023 Jan 31;42(1):111983. doi: 10.1016/j.celrep.2022.111983. Epub 2023 Jan 10. Cell Rep. 2023. PMID: 36640355 Free PMC article.
Temsavir blocks the immunomodulatory activities of HIV-1 soluble gp120.
Richard J, Prévost J, Bourassa C, Brassard N, Boutin M, Benlarbi M, Goyette G, Medjahed H, Gendron-Lepage G, Gaudette F, Chen HC, Tolbert WD, Smith AB 3rd, Pazgier M, Dubé M, Clark A, Mothes W, Kaufmann DE, Finzi A. Richard J, et al. Cell Chem Biol. 2023 May 18;30(5):540-552.e6. doi: 10.1016/j.chembiol.2023.03.003. Epub 2023 Mar 22. Cell Chem Biol. 2023. PMID: 36958337 Free PMC article.
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