7BQ5

ZIKV sE bound to mAb Z6

7BQ5 の概要

• エントリーDOI: 10.2210/pdb7bq5/pdb
• 分子名称: envelope protein, Z6 heavy chain, Z6 Light Chain (3 entities in total)
• 機能のキーワード: zika virus, antibody, fusion loop, viral protein, viral protein-immune system complex, viral protein/immune system
• 由来する生物種: Zika virus (ZIKV); 詳細
• タンパク質・核酸の鎖数: 6
• 化学式量合計: 184743.45

構造登録者

Dai, L.,Qi, J.,Gao, G.F. (登録日: 2020-03-24, 公開日: 2021-03-24, 最終更新日: 2024-10-16)

主引用文献

Dai, L.,Xu, K.,Li, J.,Huang, Q.,Song, J.,Han, Y.,Zheng, T.,Gao, P.,Lu, X.,Yang, H.,Liu, K.,Xia, Q.,Wang, Q.,Chai, Y.,Qi, J.,Yan, J.,Gao, G.F.
Protective Zika vaccines engineered to eliminate enhancement of dengue infection via immunodominance switch.
Nat.Immunol., 22:958-968, 2021

PubMed Abstract: Antibody-dependent enhancement (ADE) is an important safety concern for vaccine development against dengue virus (DENV) and its antigenically related Zika virus (ZIKV) because vaccine may prime deleterious antibodies to enhance natural infections. Cross-reactive antibodies targeting the conserved fusion loop epitope (FLE) are known as the main sources of ADE. We design ZIKV immunogens engineered to change the FLE conformation but preserve neutralizing epitopes. Single vaccination conferred sterilizing immunity against ZIKV without ADE of DENV-serotype 1-4 infections and abrogated maternal-neonatal transmission in mice. Unlike the wild-type-based vaccine inducing predominately cross-reactive ADE-prone antibodies, B cell profiling revealed that the engineered vaccines switched immunodominance to dispersed patterns without DENV enhancement. The crystal structure of the engineered immunogen showed the dimeric conformation of the envelope protein with FLE disruption. We provide vaccine candidates that will prevent both ZIKV infection and infection-/vaccination-induced DENV ADE.

PubMed: 34267374
DOI: 10.1038/s41590-021-00966-6

実験手法

X-RAY DIFFRACTION (2.99 Å)