A Quantitative Live-Cell Superresolution Imaging Framework for Measuring the Mobility of Single Molecules at Sites of Virus Assembly.

A Quantitative Live-Cell Superresolution Imaging Framework for Measuring the Mobility of Single Molecules at Sites of Virus Assembly.
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DOI:
10.3390/pathogens9110972
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发表时间:
2020-11-21
期刊:
Pathogens (Basel, Switzerland)
影响因子:
--
通讯作者:
van Engelenburg SB
van Engelenburg SB
中科院分区:
其他
文献类型:
--
作者:
Groves NS;Bruns MM;van Engelenburg SB

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超分辨率显微镜进入病毒学和微生物学领域,已经开始能够绘制对宿主-病原体界面至关重要的分子组件图,这些组件的组织规模低于光学显微镜的分辨率极限。然而,要从严格的时间不变观测中完全理解寄主和病原体之间的分子相互作用是具有挑战性的。在这里,我们描述了一种使用同时双色超分辨率显微镜来获得关于HIV-1组装的结构和动态信息的方法。具体地说,我们展示了使用活细胞光激活定位显微镜(Palm)重建单个病毒组装部位,同时评估HIV-1包膜糖蛋白在与病毒晶格相互作用期间的亚病毒迁移率。我们认为,我们的方法广泛适用于通过在纳米尺度上量化这些蛋白质的动力学来阐明病原体和宿主蛋白质-蛋白质的相互作用。
The insurgence of superresolution microscopy into the fields of virology and microbiology has begun to enable the mapping of molecular assemblies critical for host–pathogen interfaces that organize on a scale below the resolution limit of the light microscope. It is, however, challenging to completely understand the molecular interactions between host and pathogen from strictly time-invariant observations. Herein, we describe a method using simultaneous dual-color superresolution microscopy to gain both structural and dynamic information about HIV-1 assembly. Specifically, we demonstrate the reconstruction of single virus assembly sites using live-cell photo-activated localization microscopy (PALM) while concurrently assessing the sub-viral mobility of the HIV-1 envelope glycoprotein during interaction with the viral lattice. We propose that our method is broadly applicable to elucidating pathogen and host protein–protein interactions through quantification of the dynamics of these proteins at the nanoscale.
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