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Issue 10, 2017
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Cryo-electron tomography investigation of serum albumin-camouflaged tobacco mosaic virus nanoparticles

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Abstract

Nanoparticles offer great potential in drug delivery and imaging, but shielding strategies are necessary to increase circulation time and performance. Structure–function studies are required to define the design rules to achieve effective shielding. With several formulations reaching clinical testing and approval, the ability to assess and detail nanoparticle formulations at the single particle level is becoming increasingly important. To address this need, we use cryo-electron tomography (cryo-ET) to investigate stealth-coated nanoparticles. As a model system, we studied the soft matter nanotubes formed by tobacco mosaic virus (TMV) coated with human serum albumin (SA) stealth proteins. Cryo-ET and subtomogram averaging allow for visualization of individual SA molecules and determination of their orientations relative to the TMV surface, and also for measurement of the surface coverage provided by added stealth proteins. This information fills a critical gap in the understanding of the structural morphology of stealth-coated nanoparticles, and therefore cryo-ET may play an important role in guiding the development of future nanoparticle-based therapeutics.

Graphical abstract: Cryo-electron tomography investigation of serum albumin-camouflaged tobacco mosaic virus nanoparticles

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Publication details

The article was received on 01 Sep 2016, accepted on 25 Dec 2016 and first published on 27 Dec 2016


Article type: Paper
DOI: 10.1039/C6NR06948G
Citation: Nanoscale, 2017,9, 3408-3415
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    Cryo-electron tomography investigation of serum albumin-camouflaged tobacco mosaic virus nanoparticles

    N. M. Gulati, A. S. Pitek, N. F. Steinmetz and P. L. Stewart, Nanoscale, 2017, 9, 3408
    DOI: 10.1039/C6NR06948G

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