Atomic structures of enterovirus D68 in complex with two monoclonal antibodies define distinct mechanisms of viral neutralization.

Atomic structures of enterovirus D68 in complex with two monoclonal antibodies define distinct mechanisms of viral neutralization.
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肠道病毒 D68 与两种单克隆抗体复合物的原子结构定义了不同的病毒中和机制

DOI:
10.1038/s41564-018-0275-7
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发表时间:
2019-01
影响因子:
28.3
通讯作者:
Xia N
Xia N
中科院分区:
生物学1区
文献类型:
--
作者:
Zheng Q;Zhu R;Xu L;He M;Yan X;Liu D;Yin Z;Wu Y;Li Y;Yang L;Hou W;Li S;Li Z;Chen Z;Li Z;Yu H;Gu Y;Zhang J;Baker TS;Zhou ZH;Graham BS;Cheng T;Li S;Xia N

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肠道病毒D68(EV-D68)在其整个生命周期中经历成熟的、进入细胞的中间体(A-颗粒)和空体之间的结构转换。各种形式和抗体结合衣壳的结构信息将有助于开发针对EV-D68感染的有效疫苗和治疗方法,EV-D68感染在世界各地导致儿童呼吸道和瘫痪疾病。在这里,我们报告了代表病毒主要阶段的三个EV-D68衣壳状态的结构。我们进一步描述了两个原始的单抗(15C5和11G1),它们具有不同的结构定义的病毒中和机制。15C5和11G1分别在二十面体三重轴和五重轴上与衣壳基因座啮合。为了阻止病毒附着,15C5结合了三种形式的衣壳,并触发成熟的病毒粒子转变为A粒子,模拟功能受体ICAM-5的结合,而11G1仅识别A粒子。我们的数据为微小核糖核酸病毒衣壳结构的转变提供了结构和分子上的解释,并展示了抗体介导的中和的不同机制。
Enterovirus D68 (EV-D68) undergoes structural transformation between mature, cell-entry intermediate (A-particle) and empty forms throughout its life cycle. Structural information for the various forms and antibody-bound capsids will facilitate the development of effective vaccines and therapeutics against EV-D68 infection, which causes childhood respiratory and paralytic diseases worldwide. Here, we report the structures of three EV-D68 capsid states representing the virus at major phases. We further describe two original monoclonal antibodies (15C5 and 11G1) with distinct structurally defined mechanisms for virus neutralization. 15C5 and 11G1 engage the capsid loci at icosahedral three-fold and five-fold axes, respectively. To block viral attachment, 15C5 binds three forms of capsids, and triggers mature virions to transform into A-particles, mimicking engagement by the functional receptor ICAM-5, whereas 11G1 exclusively recognizes the A-particle. Our data provide a structural and molecular explanation for the transition of picornavirus capsid conformations and demonstrate distinct mechanisms for antibody-mediated neutralization.
DOI: 10.1126/sciadv.1501929
发表时间: 2016-08
期刊: Science advances
影响因子: 13.6
作者:
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发表时间: 2017-07-25
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发表时间: 2010-02
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影响因子: --
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DOI: 10.1016/j.jsb.2015.09.001
发表时间: 2015-10-01
影响因子: 3
作者:
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