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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
Three families of CD4-induced antibodies are associated with the capacity of plasma from people living with HIV to mediate ADCC in the presence of CD4-mimetics.
Tauzin A, Marchitto L, Bélanger É, Benlarbi M, Beaudoin-Bussières G, Prévost J, Yang D, Chiu T-J, Chen H-C, Bourassa C, Medjahed H, Korzeniowski MK, Gottumukkala S, Tolbert WD, Richard J, Smith AB 3rd, Pazgier M, Finzi A. Tauzin A, et al. J Virol. 2024 Oct 22;98(10):e0096024. doi: 10.1128/jvi.00960-24. Epub 2024 Sep 4. J Virol. 2024. PMID: 39230306