Correlative multi-scale cryo-imaging unveils SARS-CoV-2 assembly and egress.
Correlative multi-scale cryo-imaging unveils SARS-CoV-2 assembly and egress.
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相关的多尺度冷冻成像揭示了SARS-CoV-2的组装和出口。
DOI:
10.1038/s41467-021-24887-y
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发表时间:
2021-07-30
影响因子:
16.6
通讯作者:
Zhang P
中科院分区:
文献类型:
--
作者:
Mendonça L;Howe A;Gilchrist JB;Sheng Y;Sun D;Knight ML;Zanetti-Domingues LC;Bateman B;Krebs AS;Chen L;Radecke J;Li VD;Ni T;Kounatidis I;Koronfel MA;Szynkiewicz M;Harkiolaki M;Martin-Fernandez ML;James W;Zhang P
Since the outbreak of the SARS-CoV-2 pandemic, there have been intense structural studies on purified viral components and inactivated viruses. However, structural and ultrastructural evidence on how the SARS-CoV-2 infection progresses in the native cellular context is scarce, and there is a lack of comprehensive knowledge on the SARS-CoV-2 replicative cycle. To correlate cytopathic events induced by SARS-CoV-2 with virus replication processes in frozen-hydrated cells, we established a unique multi-modal, multi-scale cryo-correlative platform to image SARS-CoV-2 infection in Vero cells. This platform combines serial cryoFIB/SEM volume imaging and soft X-ray cryo-tomography with cell lamellae-based cryo-electron tomography (cryoET) and subtomogram averaging. Here we report critical SARS-CoV-2 structural events – e.g. viral RNA transport portals, virus assembly intermediates, virus egress pathway, and native virus spike structures, in the context of whole-cell volumes revealing drastic cytppathic changes. This integrated approach allows a holistic view of SARS-CoV-2 infection, from the whole cell to individual molecules. In this study, Peijun Zhang and colleagues use cryoFIB/SEM volume imaging and soft x-ray cryo-tomography with cryo-electron tomography (cryoET) of cellular periphery, lamellae, and subtomogram averaging to place critical structural events in the SARS-CoV-2 infection cycle in the context of whole-cell images.
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