A viral nanoparticle with dual function as an anthrax antitoxin and vaccine.
| Autor: | Darly J Manayani, Diane Thomas, Kelly A Dryden, Vijay Reddy, Marc E Siladi, John M Marlett, G Jonah A Rainey, Michael E Pique, Heather M Scobie, Mark Yeager, John A T Young, Marianne Manchester, Anette Schneemann |
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| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | PLoS Pathogens, Vol 3, Iss 10, Pp 1422-1431 (2007) |
| Druh dokumentu: | article |
| ISSN: | 1553-7366 1553-7374 |
| DOI: | 10.1371/journal.ppat.0030142 |
| Popis: | The recent use of Bacillus anthracis as a bioweapon has stimulated the search for novel antitoxins and vaccines that act rapidly and with minimal adverse effects. B. anthracis produces an AB-type toxin composed of the receptor-binding moiety protective antigen (PA) and the enzymatic moieties edema factor and lethal factor. PA is a key target for both antitoxin and vaccine development. We used the icosahedral insect virus Flock House virus as a platform to display 180 copies of the high affinity, PA-binding von Willebrand A domain of the ANTXR2 cellular receptor. The chimeric virus-like particles (VLPs) correctly displayed the receptor von Willebrand A domain on their surface and inhibited lethal toxin action in in vitro and in vivo models of anthrax intoxication. Moreover, VLPs complexed with PA elicited a potent toxin-neutralizing antibody response that protected rats from anthrax lethal toxin challenge after a single immunization without adjuvant. This recombinant VLP platform represents a novel and highly effective, dually-acting reagent for treatment and protection against anthrax. |
| Databáze: | Directory of Open Access Journals |
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