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dc.contributor.authorGonzález-Domínguez, Irene-
dc.contributor.authorGutiérrez-Granados, Sonia-
dc.contributor.authorCervera, Laura-
dc.contributor.authorGòdia, Francesc-
dc.contributor.authorDomingo, Neus-
dc.identifierdoi: 10.1016/j.bpj.2016.07.046-
dc.identifiere-issn: 1542-0086-
dc.identifierissn: 0006-3495-
dc.identifier.citationBiophysical Journal 111(6): 1173-1179 (2016)-
dc.description.abstractVirus-like particles (VLPs) have become a promising platform for vaccine production. VLPs are formed by structural viral proteins that inherently self-assemble when expressed in a host cell. They represent a highly immunogenic and safe vaccine platform, due to the absence of the viral genome and its high protein density. One of the most important parameters in vaccine production is the quality of the product. A related bottleneck in VLP-based products is the presence of cellular vesicles as a major contaminant in the preparations, which will require the set up of techniques allowing for specific discrimination of VLPs from host vesicular bodies. In this work novel, to our knowledge, multifrequency (MF) atomic force microscopy (AFM) has permitted full structural nanophysical characterization by its access to the virus capsid of the HIV-based VLPs. The assessment of these particles by advanced amplitude modulation-frequency modulation (AM-FM) viscoelastic mapping mode has enhanced the imaging resolution of their nanomechanical properties, opening a new window for the study of the biophysical attributes of VLPs. Finally, the identification and differentiation of HIV-based VLPs from cellular vesicles has been performed under ambient conditions, providing, to our knowledge, novel methodology for the monitoring and quality control of VLPs.-
dc.description.sponsorshipThis work was supported by the Plan Nacional de Investigación, Spanish Ministry of Science and Innovation (MINECO BIO2011-2330), and projects from the Spanish Ministery of Economy and Competitivity (FIS2013-48668-C2-1-P), and the Generalitat de Catalunya (2014 SGR 1216). The Catalan Institute of Nanoscience and Nanotechnology acknowledges support from the Severo Ochoa Program (MINECO, Grant SEV2013-0295). N.D. wants to acknowledge the Spanish Ministry of Science and Innovation (Ramon y Cajal research grant RYC-2010-06365).-
dc.publisherBiophysical Society-
dc.titleIdentification of HIV-1–based virus-like particles by multifrequency atomic force microscopy-
dc.description.versionPeer Reviewed-
dc.contributor.funderGeneralitat de Catalunya-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.contributor.funderMinisterio de Ciencia e Innovación (España)-
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