Parenterally Administered P24-VP8* Nanoparticle Vaccine Conferred Strong Protection against Rotavirus Diarrhea and Virus Shedding in Gnotobiotic Pigs

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dc.contributor.authorRamesh, Ashwinen
dc.contributor.authorMao, Jiangdien
dc.contributor.authorLei, Shaohuaen
dc.contributor.authorTwitchell, Ericaen
dc.contributor.authorShiraz, Ashton K.en
dc.contributor.authorJiang, Xien
dc.contributor.authorTan, Mingen
dc.contributor.authorYuan, Lijuanen
dc.date.accessioned2019-11-12T13:33:14Zen
dc.date.available2019-11-12T13:33:14Zen
dc.date.issued2019-11-06en
dc.date.updated2019-11-12T08:28:31Zen
dc.description.abstractCurrent live rotavirus vaccines are costly with increased risk of intussusception due to vaccine replication in the gut of vaccinated children. New vaccines with improved safety and cost-effectiveness are needed. In this study, we assessed the immunogenicity and protective efficacy of a novel P24-VP8* nanoparticle vaccine using the gnotobiotic (Gn) pig model of human rotavirus infection and disease. Three doses of P24-VP8* (200 &mu;g/dose) intramuscular vaccine with Al(OH)<sub>3</sub> adjuvant (600 &mu;g) conferred significant protection against infection and diarrhea after challenge with virulent Wa strain rotavirus. This was indicated by the significant reduction in the mean duration of diarrhea, virus shedding in feces, and significantly lower fecal cumulative consistency scores in post-challenge day (PCD) 1&ndash;7 among vaccinated pigs compared to the mock immunized controls. The P24-VP8* vaccine was highly immunogenic in Gn pigs. It induced strong VP8*-specific serum IgG and Wa-specific virus-neutralizing antibody responses from post-inoculation day 21 to PCD 7, but did not induce serum or intestinal IgA antibody responses or a strong effector T cell response, which are consistent with the immunization route, the adjuvant used, and the nature of the non-replicating vaccine. The findings are highly translatable and thus will facilitate clinical trials of the P24-VP8* nanoparticle vaccine.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRamesh, A.; Mao, J.; Lei, S.; Twitchell, E.; Shiraz, A.; Jiang, X.; Tan, M.; Yuan, L. Parenterally Administered P24-VP8* Nanoparticle Vaccine Conferred Strong Protection against Rotavirus Diarrhea and Virus Shedding in Gnotobiotic Pigs. Vaccines 2019, 7, 177.en
dc.identifier.doihttps://doi.org/10.3390/vaccines7040177en
dc.identifier.urihttp://hdl.handle.net/10919/95498en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectrotavirus nanoparticle vaccineen
dc.subjectgnotobiotic pigsen
dc.titleParenterally Administered P24-VP8* Nanoparticle Vaccine Conferred Strong Protection against Rotavirus Diarrhea and Virus Shedding in Gnotobiotic Pigsen
dc.title.serialVaccinesen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
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