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-Structure paper
タイトル | Neutralizing antibodies elicited in macaques recognize V3 residues on altered conformations of HIV-1 Env trimer. |
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ジャーナル・号・ページ | NPJ Vaccines, Vol. 9, Issue 1, Page 240, Year 2024 |
掲載日 | 2024年12月5日 |
![]() | Andrew T DeLaitsch / Jennifer R Keeffe / Harry B Gristick / Juliet A Lee / Wenge Ding / Weimin Liu / Ashwin N Skelly / George M Shaw / Beatrice H Hahn / Pamela J Björkman / ![]() |
PubMed 要旨 | Eliciting broadly neutralizing antibodies that protect against diverse HIV-1 strains is a primary goal of AIDS vaccine research. We characterized Ab1456 and Ab1271, two heterologously-neutralizing ...Eliciting broadly neutralizing antibodies that protect against diverse HIV-1 strains is a primary goal of AIDS vaccine research. We characterized Ab1456 and Ab1271, two heterologously-neutralizing antibodies elicited in non-human primates by priming with an engineered V3-targeting SOSIP Env immunogen and boosting with increasingly native-like SOSIP Envs derived from different strain backgrounds. Structures of Env trimers in complex with these antibodies revealed V3 targeting, but on conformational states of Env distinct from the typical closed, prefusion trimeric SOSIP structure. Env trimers bound by Ab1456 adopted conformations resembling CD4-bound open Env states in the absence of soluble CD4, whereas trimers bound by Ab1271 exhibited a trimer apex-altered conformation to accommodate antibody binding. The finding that elicited antibodies cross-neutralized by targeting altered, non-closed, prefusion Env trimer conformations provides important information about Env dynamics that is relevant for HIV-1 vaccine design aimed at raising antibodies to desired epitopes on closed pre-fusion Env trimers. |
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手法 | EM (単粒子) |
解像度 | 4.6 - 14.0 Å |
構造データ | ![]() EMDB-45942: Unbound 6535.3 SOSIP.664 trimer ![]() EMDB-45943: Ab1271 Fab-bound 6535.3 SOSIP.664 trimer ![]() EMDB-45944: Ab1456 Fab / JRCSF SOSIP.664 (consensus map) ![]() EMDB-45945: Ab1456 Fab / JRCSF SOSIP.664 (class 1) ![]() EMDB-45946: Ab1456 Fab / JRCSF SOSIP.664 (class 2) ![]() EMDB-45947: Ab1456 Fab / JRCSF SOSIP.664 (class 3) ![]() EMDB-45948: Ab1456 Fab / JRCSF SOSIP.664 (class 4) ![]() EMDB-45949: Ab1456 Fab / JRCSF SOSIP.664 (class 5) ![]() EMDB-45950: Ab1456 Fab / JRCSF SOSIP.664 (class 6) ![]() EMDB-45951: Ab1456 Fab / JRCSF SOSIP.664 (class 7) ![]() EMDB-45952: Ab1456 Fab / JRCSF SOSIP.664 (class 8) |
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