Stiftelsen lantbruksforskning

Lantbruks- och trädgårdsföretagarnas egen forskningsstiftelse finansierar behovsdriven forskning för svenska förhållanden.
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Möjlig formulering av ett vaccin mot Strongylus vulgaris

Status: Pågående
Projektnummer: H-20-47-568
Kategori: Research program | Horse
Ansökningsår: 2020
Huvudsökande: Caroline Fossum
Organisation: SLU
E-postadress: Caroline.Fossum@slu.se
Telefon: 018-672782
Medsökande: Stina Hellman
Medsökande: null null
Beviljade medel: 2 933 000 SEK

The proposed project aims to continue research for development of a vaccine protective against the pathogenic equine parasite Strongylus vulgaris. The ongoing work to establish appropriate in vitro models to screen the effect of candidate vaccine antigens/adjuvants will be continued. Cytokine screenings in cultures of equine PBMC and intestinal organoids will enable studies of both the systemic (PBMC) and local (organoids) response to parasite antigens. Our main antigen candidate, the recombinant protein SvSXP, will be evaluated together with a novel adjuvant, G3, first in our in vitro systems and thereafter in an immunisation trial in collaboration with experts on parasite immunology at the University of Kentucky. In search of additional vaccine antigens a bacteriophage cDNA library constructed from migrating S. vulgaris larvae will be utilized. Bacteriophage clones expressing promising larval antigens will be further propagated and tested for inclusion in the vaccine formula.

Projektet syftar till att fortsätta utvecklingen av ett vaccin som skyddar mot hästens farligaste inälvsparasiter, Strongylus vulgaris. Det redan påbörjade projektet med att etablera in vitro modeller för att screena immunreaktioner mot olika kandidatantigen/adjuvans planeras fortsätta. Genom att mäta cytokinsvaret i cellkulturer bestående av mononukleära blodceller och tarmorganoider kan både de systemiska (blodceller) och lokala (organoider) immunreaktionerna mot olika parasitantigen utvärderas. Kandidatantigenet SvSXP kommer tillsammans med ett nytt adjuvans, G3, att utvärderas först in vitro och sedan i ett vaccinationsförsök i samarbete med erfarna parasitimmunologer vid University of Kentucky. För att finna ytterligare vaccinantigen kommer ett redan existerande S.vulgaris cDNA bibliotek att användas. Kloner som visar potential att inkluderas i vaccinformuleringen kommer att testas och utvärderas med den etablerade metodologin.

 

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