Among the non-specific immune events, it is well established
that fish can secrete type I interferon in response to viral infection
and it is one of the gene markers used to studying the early protection
induced by a vaccine. Our results clearly show that the
pcDNA-VP2 vaccine up-regulates IFN-1 expression, with early increases
of around 57-fold with respect to the empty plasmid. A
comparison with previous results with the alginate coated vaccine
[29] suggests that the expression of the innate-immune-related
genes was clearly higher in the fish fed with pcDNA-VP2 vaccine
pellets. As expected, IFN-1 was expressed most strongly 2e3 days
pv, although significant up-regulation of IFN-g was also evident
after 5 days (also named IFN-II), as also observed at different times
for Mx-1, IL8 and IL12 in the vaccinated fish with respect to the fish
fed with the empty plasmid.
Among the non-specific immune events, it is well establishedthat fish can secrete type I interferon in response to viral infectionand it is one of the gene markers used to studying the early protectioninduced by a vaccine. Our results clearly show that thepcDNA-VP2 vaccine up-regulates IFN-1 expression, with early increasesof around 57-fold with respect to the empty plasmid. Acomparison with previous results with the alginate coated vaccine[29] suggests that the expression of the innate-immune-relatedgenes was clearly higher in the fish fed with pcDNA-VP2 vaccinepellets. As expected, IFN-1 was expressed most strongly 2e3 dayspv, although significant up-regulation of IFN-g was also evidentafter 5 days (also named IFN-II), as also observed at different timesfor Mx-1, IL8 and IL12 in the vaccinated fish with respect to the fishfed with the empty plasmid.
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