VirusMapper: open-source nanoscale mapping of viral architecture through super-resolution microscopy.

Abstract:

:The nanoscale molecular assembly of mammalian viruses during their infectious life cycle remains poorly understood. Their small dimensions, generally bellow the 300nm diffraction limit of light microscopes, has limited most imaging studies to electron microscopy. The recent development of super-resolution (SR) light microscopy now allows the visualisation of viral structures at resolutions of tens of nanometers. In addition, these techniques provide the added benefit of molecular specific labelling and the capacity to investigate viral structural dynamics using live-cell microscopy. However, there is a lack of robust analytical tools that allow for precise mapping of viral structure within the setting of infection. Here we present an open-source analytical framework that combines super-resolution imaging and naïve single-particle analysis to generate unbiased molecular models. This tool, VirusMapper, is a high-throughput, user-friendly, ImageJ-based software package allowing for automatic statistical mapping of conserved multi-molecular structures, such as viral substructures or intact viruses. We demonstrate the usability of VirusMapper by applying it to SIM and STED images of vaccinia virus in isolation and when engaged with host cells. VirusMapper allows for the generation of accurate, high-content, molecular specific virion models and detection of nanoscale changes in viral architecture.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Gray RD,Beerli C,Pereira PM,Scherer KM,Samolej J,Bleck CK,Mercer J,Henriques R

doi

10.1038/srep29132

subject

Has Abstract

pub_date

2016-07-04 00:00:00

pages

29132

issn

2045-2322

pii

srep29132

journal_volume

6

pub_type

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