SAV Ag CpG/polyI:C formulated vaccination potentiate protective immune responses in Atlantic salmon - no additive or synergistic effect present when co-injecting a Rhabdovirus G-DNA vaccine
Vaccines of today rely on adjuvant efficacy to provide a link between innate and adaptive immunity. CpG oligodeoxynucleotides (ODN) and polyinosinic:polycytidylic acid (polyI:C) are both toll-like receptor (TLR) ligands signaling through a combination of pathogen recognition receptors (PRR) and in m...
Main Author: | |
---|---|
Format: | Master Thesis |
Language: | English |
Published: |
University of Tromsø
2013
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/7109 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/7109 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/7109 2023-05-15T15:33:03+02:00 SAV Ag CpG/polyI:C formulated vaccination potentiate protective immune responses in Atlantic salmon - no additive or synergistic effect present when co-injecting a Rhabdovirus G-DNA vaccine Thim, Hanna Leena 2013-02-11 https://hdl.handle.net/10037/7109 eng eng University of Tromsø Universitetet i Tromsø https://hdl.handle.net/10037/7109 URN:NBN:no-uit_munin_6708 openAccess Copyright 2013 The Author(s) VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 BIO-3901 Master thesis Mastergradsoppgave 2013 ftunivtroemsoe 2021-06-25T17:54:08Z Vaccines of today rely on adjuvant efficacy to provide a link between innate and adaptive immunity. CpG oligodeoxynucleotides (ODN) and polyinosinic:polycytidylic acid (polyI:C) are both toll-like receptor (TLR) ligands signaling through a combination of pathogen recognition receptors (PRR) and in mammals CpG/polyI:C are known to induce T-helper 1 (Th1) and cytotoxic T-lymphocyte (CTL) responses. Currently, the commercial vaccine against salmonid alpha virus (SAV) is based on inactivated whole-virus antigen combined with oil (Montanide ISA), mainly stimulating humoral responses. Here, the purpose was to differentiate between adjuvant and antigen induced protection for both water and oil formulated SAV Ag combined with CpG/polyI:C. Moreover, i.p. injected SAV Ag was also co-injected (i.m.) with Novirhabdovirus G DNA vaccine (vhsG), a potent inducer of innate antiviral responses in fish. This to observe if vhsG could enhance the immunity induced by the SAV Ag vaccine and also combined with SAV Ag CpG/polyI:C, to test whether vhsG could maximize the protection further. Expression of early antiviral genes, protection and elicited humoral responses were used to differentiate between the various vaccine formulations, pre- and post- cohabitant SAV challenge. SAV Ag alone and SAV Ag CpG/polyI:C provided full protection against SAV masking the objective to differentiate between Ag and adjuvant induced protection. Nonetheless, CpG/polyI:C again induced high innate immune gene expression (IFNa1, Vig-1, Mx and IFNγ) post vaccination and a potent induction of heat stable (neutralizing antibodies) and heat volatile humoral responses (complement) pre- and post- challenge. The stimulatory effect of vhsG co-injected treatments on early innate immune gene expression was modest. Co-injection of vhsG with SAV Ag CpG/polyI:C did not provide any beneficial adjuvant effects, rather indicating an inhibitory interplay between CpG/polyI:C and vhsG. Results presented here, again demonstrate the immunostimulatory potency of CpG/polyI:C to be used as an adjuvant in viral vaccines for fish. Master Thesis Atlantic salmon University of Tromsø: Munin Open Research Archive Sav’ ENVELOPE(156.400,156.400,68.817,68.817) |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 BIO-3901 |
spellingShingle |
VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 BIO-3901 Thim, Hanna Leena SAV Ag CpG/polyI:C formulated vaccination potentiate protective immune responses in Atlantic salmon - no additive or synergistic effect present when co-injecting a Rhabdovirus G-DNA vaccine |
topic_facet |
VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 BIO-3901 |
description |
Vaccines of today rely on adjuvant efficacy to provide a link between innate and adaptive immunity. CpG oligodeoxynucleotides (ODN) and polyinosinic:polycytidylic acid (polyI:C) are both toll-like receptor (TLR) ligands signaling through a combination of pathogen recognition receptors (PRR) and in mammals CpG/polyI:C are known to induce T-helper 1 (Th1) and cytotoxic T-lymphocyte (CTL) responses. Currently, the commercial vaccine against salmonid alpha virus (SAV) is based on inactivated whole-virus antigen combined with oil (Montanide ISA), mainly stimulating humoral responses. Here, the purpose was to differentiate between adjuvant and antigen induced protection for both water and oil formulated SAV Ag combined with CpG/polyI:C. Moreover, i.p. injected SAV Ag was also co-injected (i.m.) with Novirhabdovirus G DNA vaccine (vhsG), a potent inducer of innate antiviral responses in fish. This to observe if vhsG could enhance the immunity induced by the SAV Ag vaccine and also combined with SAV Ag CpG/polyI:C, to test whether vhsG could maximize the protection further. Expression of early antiviral genes, protection and elicited humoral responses were used to differentiate between the various vaccine formulations, pre- and post- cohabitant SAV challenge. SAV Ag alone and SAV Ag CpG/polyI:C provided full protection against SAV masking the objective to differentiate between Ag and adjuvant induced protection. Nonetheless, CpG/polyI:C again induced high innate immune gene expression (IFNa1, Vig-1, Mx and IFNγ) post vaccination and a potent induction of heat stable (neutralizing antibodies) and heat volatile humoral responses (complement) pre- and post- challenge. The stimulatory effect of vhsG co-injected treatments on early innate immune gene expression was modest. Co-injection of vhsG with SAV Ag CpG/polyI:C did not provide any beneficial adjuvant effects, rather indicating an inhibitory interplay between CpG/polyI:C and vhsG. Results presented here, again demonstrate the immunostimulatory potency of CpG/polyI:C to be used as an adjuvant in viral vaccines for fish. |
format |
Master Thesis |
author |
Thim, Hanna Leena |
author_facet |
Thim, Hanna Leena |
author_sort |
Thim, Hanna Leena |
title |
SAV Ag CpG/polyI:C formulated vaccination potentiate protective immune responses in Atlantic salmon - no additive or synergistic effect present when co-injecting a Rhabdovirus G-DNA vaccine |
title_short |
SAV Ag CpG/polyI:C formulated vaccination potentiate protective immune responses in Atlantic salmon - no additive or synergistic effect present when co-injecting a Rhabdovirus G-DNA vaccine |
title_full |
SAV Ag CpG/polyI:C formulated vaccination potentiate protective immune responses in Atlantic salmon - no additive or synergistic effect present when co-injecting a Rhabdovirus G-DNA vaccine |
title_fullStr |
SAV Ag CpG/polyI:C formulated vaccination potentiate protective immune responses in Atlantic salmon - no additive or synergistic effect present when co-injecting a Rhabdovirus G-DNA vaccine |
title_full_unstemmed |
SAV Ag CpG/polyI:C formulated vaccination potentiate protective immune responses in Atlantic salmon - no additive or synergistic effect present when co-injecting a Rhabdovirus G-DNA vaccine |
title_sort |
sav ag cpg/polyi:c formulated vaccination potentiate protective immune responses in atlantic salmon - no additive or synergistic effect present when co-injecting a rhabdovirus g-dna vaccine |
publisher |
University of Tromsø |
publishDate |
2013 |
url |
https://hdl.handle.net/10037/7109 |
long_lat |
ENVELOPE(156.400,156.400,68.817,68.817) |
geographic |
Sav’ |
geographic_facet |
Sav’ |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
https://hdl.handle.net/10037/7109 URN:NBN:no-uit_munin_6708 |
op_rights |
openAccess Copyright 2013 The Author(s) |
_version_ |
1766363521557200896 |