Influenza NG-34 T cell conserved epitope adjuvanted with CAF01 as a possible influenza vaccine candidate
Visualitza/Obre
Autor/a
Sisteré-Oró, Marta
Pedersen, Gabriel K.
Córdoba, Lorena
Christensen, Dennis
Data de publicació
2020-04-20ISSN
0928-4249
Resum
Conserved epitopes are targets commonly researched to be part of universal vaccine candidates against influenza viruses (IV). These conserved epitopes need to be cross-protecting against distinct IV subtypes and to have a strong immunogenic potential. Nevertheless, subunit vaccines generally require a strong adjuvant to enhance their immunological effects. Herewith, we compare four different adjuvants differing in their immunological signatures that may enhance efficacy of a conserved hemagglutinin (HA)-epitope from IV, the NG-34, to define the most efficient combination of antigen/adjuvant to combat IV infections. Soluble NG-34 was mixed with adjuvants like aluminium hydroxide (AH) and AddaVax, known to induce Th2 and humoral responses; CAF01 which displays a biased Th1/Th17 profile and Diluvac Forte which augments the humoral response. Combinations were tested in different groups of mice which were subjected to immunological analyses. CAF01 + NG-34 induced a complete immune response with the highest IgG1, IgG2c titers and percentages of activated CD4 T cell promoting IFN-γ, IL-2 and TNF-α producing cells. Furthermore, in NG-34 stimulated mice splenocytes, cytokine levels of IFN-γ, IL-1β, IL-6, IL-10, IL-17 and TNF-α were also the highest in the CAF01 + NG-34 mouse group. This complete induced immune response covering the humoral and the cellular arms of the adaptive immunity promoted by CAF01 + NG-34 group suggests that CAF01 could be a good candidate as an adjuvant to combine with NG-34 for an efficacious vaccine against IV. However, more studies performed in IV hosts as well as studies with a challenge model are further required.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
619 - Veterinària
Pàgines
11
Publicat per
BMC
Publicat a
Veterinary Research
Citació
Sisteré-Oró, Marta, Gabriel K. Pedersen, Lorena Córdoba, Sergi López-Serrano, Dennis Christensen, and Ayub Darji. 2020. "Influenza NG-34 T Cell Conserved Epitope Adjuvanted With CAF01 As A Possible Influenza Vaccine Candidate". Veterinary Research 51 (1). doi:10.1186/s13567-020-00770-4.
Número de l'acord de la subvenció
EC/H2020/730964/ES/European Vaccine Research and Development Infrastructure/TRANSVAC2
MINECO/Programa estatal de I+D+I orientada a los retos de la sociedad/AGL2013-48923-C2-2-R/ES/Nuevas estrategias vacunales frente a enfermedades víricas ganaderas empleando pseudopartículas virales modificadas/
Programa
Sanitat Animal
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