8TO9

Cryo-EM structure of TRNM-f*01 Fab in complex with HIV-1 Env trimer ConC SOSIP

Summary for 8TO9

• Entry DOI: 10.2210/pdb8to9/pdb
• EMDB information: 41440
• Descriptor: Envelope glycoprotein gp120, TRNM-f*01 heavy chain, TRNM-f*01 light chain, ... (7 entities in total)
• Functional Keywords: antibody, vaccination, viral protein, immune system, viral protein-immune system complex, viral protein/immune system
• Biological source: Homo sapiens (human); More
• Total number of polymer chains: 12
• Total formula weight: 303477.50

Authors

Roark, R.S.,Morano, N.C.,Shapiro, L.S.,Kwong, P.D. (deposition date: 2023-08-03, release date: 2024-08-07, Last modification date: 2025-05-14)

Primary citation

Wang, H.,Cheng, C.,Dal Santo, J.L.,Shen, C.H.,Bylund, T.,Henry, A.R.,Howe, C.A.,Hwang, J.,Morano, N.C.,Morris, D.J.,Pletnev, S.,Roark, R.S.,Zhou, T.,Hansen, B.T.,Hoyt, F.H.,Johnston, T.S.,Wang, S.,Zhang, B.,Ambrozak, D.R.,Becker, J.E.,Bender, M.F.,Changela, A.,Chaudhary, R.,Corcoran, M.,Corrigan, A.R.,Foulds, K.E.,Guo, Y.,Lee, M.,Li, Y.,Lin, B.C.,Liu, T.,Louder, M.K.,Mandolesi, M.,Mason, R.D.,McKee, K.,Nair, V.,O'Dell, S.,Olia, A.S.,Ou, L.,Pegu, A.,Raju, N.,Rawi, R.,Roberts-Torres, J.,Sarfo, E.K.,Sastry, M.,Schaub, A.J.,Schmidt, S.D.,Schramm, C.A.,Schwartz, C.L.,Smith, S.C.,Stephens, T.,Stuckey, J.,Teng, I.T.,Todd, J.P.,Tsybovsky, Y.,Van Wazer, D.J.,Wang, S.,Doria-Rose, N.A.,Fischer, E.R.,Georgiev, I.S.,Karlsson Hedestam, G.B.,Sheng, Z.,Woodward, R.A.,Douek, D.C.,Koup, R.A.,Pierson, T.C.,Shapiro, L.,Shaw, G.M.,Mascola, J.R.,Kwong, P.D.
Potent and broad HIV-1 neutralization in fusion peptide-primed SHIV-infected macaques.
Cell, 187:7214-7231.e23, 2024

PubMed Abstract: An antibody-based HIV-1 vaccine will require the induction of potent cross-reactive HIV-1-neutralizing responses. To demonstrate feasibility toward this goal, we combined vaccination targeting the fusion-peptide site of vulnerability with infection by simian-human immunodeficiency virus (SHIV). In four macaques with vaccine-induced neutralizing responses, SHIV infection boosted plasma neutralization to 45%-77% breadth (geometric mean 50% inhibitory dilution [ID] ∼100) on a 208-strain panel. Molecular dissection of these responses by antibody isolation and cryo-electron microscopy (cryo-EM) structure determination revealed 15 of 16 antibody lineages with cross-clade neutralization to be directed toward the fusion-peptide site of vulnerability. In each macaque, isolated antibodies from memory B cells recapitulated the plasma-neutralizing response, with fusion-peptide-binding antibodies reaching breadths of 40%-60% (50% inhibitory concentration [IC] < 50 μg/mL) and total lineage-concentrations estimates of 50-200 μg/mL. Longitudinal mapping indicated that these responses arose prior to SHIV infection. Collectively, these results provide in vivo molecular examples for one to a few B cell lineages affording potent, broadly neutralizing plasma responses.

PubMed: 39471811
DOI: 10.1016/j.cell.2024.10.003

Experimental method

ELECTRON MICROSCOPY (4.03 Å)