scholarly journals Virus-like particles derived from major capsid protein VP1 of different polyomaviruses differ in their ability to induce maturation in human dendritic cells

Virology ◽  
2006 ◽  
Vol 354 (2) ◽  
pp. 252-260 ◽  
Author(s):  
Alma Gedvilaite ◽  
David C. Dorn ◽  
Kestutis Sasnauskas ◽  
Gabriele Pecher ◽  
Aiste Bulavaite ◽  
...  
Keyword(s):  
Dendritic Cells ◽  
Capsid Protein ◽  
Major Capsid Protein ◽  
Virus Like Particles ◽  
Capsid Protein Vp1 ◽  
Human Dendritic Cells

Generation of virus-like particles consisting of the major capsid protein VP1 of goose hemorrhagic polyomavirus and their application in serological tests

2006 ◽  
Vol 120 (1-2) ◽  
pp. 128-137 ◽  
Author(s):  
Anja Zielonka ◽  
Alma Gedvilaite ◽  
Rainer Ulrich ◽  
Dörte Lüschow ◽  
Kestutis Sasnauskas ◽  
...  
Keyword(s):  
Capsid Protein ◽  
Major Capsid Protein ◽  
Serological Tests ◽  
Virus Like Particles ◽  
Capsid Protein Vp1

scholarly journals Head-to-Head Comparison of Modular Vaccines Developed Using Different Capsid Virus-Like Particle Backbones and Antigen Conjugation Systems

Vaccines ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 539
Author(s):  
Laurits Fredsgaard ◽  
Louise Goksøyr ◽  
Susan Thrane ◽  
Kara-Lee Aves ◽  
Thor G. Theander ◽  
...  
Keyword(s):  
Immune Response ◽  
Human Papillomavirus ◽  
Immune Responses ◽  
Capsid Protein ◽  
Major Capsid Protein ◽  
Molecular Scaffolds ◽  
Conjugation System ◽  
Virus Like Particles ◽  
Virus Like Particle ◽  
Specific Igg

Capsid virus-like particles (cVLPs) are used as molecular scaffolds to increase the immunogenicity of displayed antigens. Modular platforms have been developed whereby antigens are attached to the surface of pre-assembled cVLPs. However, it remains unknown to what extent the employed cVLP backbone and conjugation system may influence the immune response elicited against the displayed antigen. Here, we performed a head-to-head comparison of antigen-specific IgG responses elicited by modular cVLP-vaccines differing by their employed cVLP backbone or conjugation system, respectively. Covalent antigen conjugation (i.e., employing the SpyTag/SpyCatcher system) resulted in significantly higher antigen-specific IgG titers compared to when using affinity-based conjugation (i.e., using biotin/streptavidin). The cVLP backbone also influenced the antigen-specific IgG response. Specifically, vaccines based on the bacteriophage AP205 cVLP elicited significantly higher antigen-specific IgG compared to corresponding vaccines using the human papillomavirus major capsid protein (HPV L1) cVLP. In addition, the AP205 cVLP platform mediated induction of antigen-specific IgG with a different subclass profile (i.e., higher IgG2a and IgG2b) compared to HPV L1 cVLP. These results demonstrate that the cVLP backbone and conjugation system can individually affect the IgG response elicited against a displayed antigen. These data will aid the understanding and process of tailoring modular cVLP vaccines to achieve improved immune responses.

scholarly journals Genetic Analysis of the Major Capsid Protein of the Archaeal Fusellovirus SSV1: Mutational Flexibility and Conformational Change

2017 ◽  
Author(s):  
Eric A. Iverson ◽  
David A. Goodman ◽  
Madeline E. Gorchels ◽  
Kenneth M. Stedman
Keyword(s):  
Capsid Protein ◽  
Major Capsid Protein ◽  
Point Mutations ◽  
Site Directed Mutagenesis ◽  
Vp1 Gene ◽  
Capsid Protein Gene ◽  
Vp1 Protein ◽  
Transposon Insertion ◽  
N Terminus ◽  
Capsid Protein Vp1

Viruses with spindle or lemon-shaped virions are rare in the world of viruses, but are common in viruses of archaeal extremophiles, possibly due to the extreme conditions in which they thrive. However, the structural and genetic basis for the unique spindle shape is unknown. The best-studied spindle-shaped virus, SSV1, is composed mostly of the major capsid protein VP1. Similar to many other viruses, proteolytic cleavage of VP1 is thought to be critical for virion formation. Unlike half of the genes in SSV1, including the minor capsid protein gene vp3, the vp1 gene does not tolerate deletion or transposon insertion. In order determine the role of the vp1 gene and its proteolysis for virus function, we developed techniques for site-directed mutagenesis of the SSV1 genome and complemented deletion mutants with vp1 genes from other SSVs. By analyzing these mutants we demonstrate that the N-terminus of the VP1 protein is required, but the N-terminus, or entire SSV1 VP1 protein, can be exchanged with VP1s from other SSVs. However, the conserved glutamate at the cleavage site is not essential for infectivity. Interestingly, viruses containing point mutations at this position generate mostly abnormal virions.

scholarly journals Genetic Analysis of the Major Capsid Protein of the Archaeal Fusellovirus SSV1: Mutational Flexibility and Conformational Change

2017 ◽  
Author(s):  
Eric A. Iverson ◽  
David A. Goodman ◽  
Madeline E. Gorchels ◽  
Kenneth M. STEDMAN
Keyword(s):  
Capsid Protein ◽  
Major Capsid Protein ◽  
Point Mutations ◽  
Site Directed Mutagenesis ◽  
Vp1 Gene ◽  
Vp1 Protein ◽  
Transposon Insertion ◽  
N Terminus ◽  
Capsid Protein Vp1 ◽  
Virion Formation

Viruses with spindle or lemon-shaped virions are rare in the world of viruses, but are common in viruses of archaeal extremophiles, possibly due to the extreme conditions in which they thrive. However, the structural and genetic basis for the unique spindle shape is unknown. The best-studied spindle-shaped virus, SSV1, is composed mostly of the major capsid protein VP1. Similar to many other viruses, proteolytic cleavage of VP1 is thought to be critical for virion formation. Unlike half of the genes in SSV1, including the minor capsid protein VP3, the vp1 gene does not tolerate deletion or transposon insertion. In order determine the role of the vp1 gene and its proteolysis for virus function, we developed techniques for site-directed mutagenesis of the SSV1 genome and complemented deletion mutants with vp1 genes from other SSVs. By analyzing these mutants we demonstrate that the N-terminus of the VP1 protein is required, but the N-terminus, or entire SSV1 VP1 protein, can be exchanged with VP1s from other SSVs. However, the conserved glutamate at the cleavage site is not essential. Interestingly, viruses containing point mutations at this position generate mostly abnormal virions.

Characterization of Coxsackievirus B4 virus-like particles VLP produced by the recombinant baculovirus-insect cell system expressing the major capsid protein

2020 ◽  
Vol 47 (4) ◽  
pp. 2835-2843
Author(s):  
Ikbel Hadj Hassine ◽  
Jawhar Gharbi ◽  
Bechr Hamrita ◽  
Mohammed A. Almalki ◽  
José Francisco Rodríguez ◽  
...  
Keyword(s):  
Capsid Protein ◽  
Insect Cell ◽  
Major Capsid Protein ◽  
Recombinant Baculovirus ◽  
Cell System ◽  
Virus Like Particles ◽  
Coxsackievirus B4
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