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Super-resolution imaging of ESCRT-proteins at HIV-1 assembly sites

Author Summary Viruses hijack the cellular machinery to complete their life cycle. In the case of HIV-1, the endosomal sorting complex required for transport (ESCRT) is recruited by nascent viruses to release themselves from infected cells. Currently, there has been an intense amount of research on...

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Bibliographic Details
Main Authors: Prescher, Jens (Author) , Müller, Barbara (Author)
Format: Article (Journal)
Language:English
Published: February 24, 2015
In: PLoS pathogens
Year: 2015, Volume: 11, Issue: 2, Pages: e1004677
ISSN:1553-7374
DOI:10.1371/journal.ppat.1004677
Online Access:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1371/journal.ppat.1004677
Verlag, kostenfrei, Volltext: http://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1004677
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Author Notes:Jens Prescher, Viola Baumgärtel, Sergey Ivanchenko, Adriano A. Torrano, Christoph Bräuchle, Barbara Müller, Don C. Lamb
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Summary:Author Summary Viruses hijack the cellular machinery to complete their life cycle. In the case of HIV-1, the endosomal sorting complex required for transport (ESCRT) is recruited by nascent viruses to release themselves from infected cells. Currently, there has been an intense amount of research on how the ESCRT machinery induces viral release. Using super-resolution imaging with endogenous ESCRT proteins or ESCRT proteins containing a small tag, we are able to provide insight into how ESCRT leads to budding of HIV-1. Super resolution imaging of the early ESCRT factors Tsg101 and ALIX, as well as later factors CHMP4B and CHMP2A, also showed condensed, circular structures with diameters of roughly 60 to 90 nm. The cluster sizes were significantly smaller than that of the HIV-1 bud and the distribution of cluster sizes that colocalized with nascent HIV-1 assembly sites were narrower than for non-colocalizing structures. This indicates that the point of interaction between the ESCRT machinery and the HIV-1 assembly site is in the bud neck.
Item Description:Gesehen am 10.07.2017
Physical Description:Online Resource
ISSN:1553-7374
DOI:10.1371/journal.ppat.1004677

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