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Journal of Veterinary Research
Volume 63 (2019): Numero 4 (December 2019)
Accesso libero
Evaluation of long-term antibody response and cross-serotype reaction in ducks immunised with recombinant
Riemerella anatipestifer
outer membrane protein A and CpG ODN
May Phonvisay
May Phonvisay
,
Jai-Wei Lee
Jai-Wei Lee
,
Jhong-Jie Liou
Jhong-Jie Liou
,
Hsian-Yu Wang
Hsian-Yu Wang
e
Chun-Yen Chu
Chun-Yen Chu
| 16 nov 2019
Journal of Veterinary Research
Volume 63 (2019): Numero 4 (December 2019)
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CONDIVIDI
Pubblicato online:
16 nov 2019
Pagine:
543 - 548
Ricevuto:
10 apr 2019
Accettato:
24 ott 2019
DOI:
https://doi.org/10.2478/jvetres-2019-0066
Parole chiave
duck
,
vaccine
,
adjuvant
,
long-term antibody
© 2019 M. Phonvisay et al. published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Fig. 1
Expression and immunogenicity analysis of recombinant OmpA. A – rOmpA separated on 10% SDS-PAGE for protein quantitation. Lanes 1–5 – BSA standards, lane 6 – lysate of E. coli expressing rOmpA induced for 4 h, lane 7 – lysate of E. coli expressing inactivated rOmpA, and lane M – gene marker. B – The 65 kDa of expressed rOmpA separated on 10% SDS-PAGE. Lane 1 – pET-32a incubated for 0 h, lane 2 – pET-32a incubated for 4 h, lane 3 – lysate of E. coli expressing rOmpA induced for 0 h, lane 4 – lysate of E. coli expressing rOmpA induced for 4 h, and lane M – gene marker. C – Western blot analysis with anti-RA duck sera. Lane 1 – pET-32a incubated for 0 h, lane 2 – pET-32a incubated for 4 h, lane 3 – lysate of E. coli expressing rOmpA induced for 0 h, lane 4 – lysate of E. coli expressing rOmpA induced for 4 h and M – gene marker
Fig. 2
RA-specific antibody level in immunised ducks. Different superscript letters indicate statistically significant difference (p < 0.05) between groups for each sampling time point
Fig. 3
Cytokine mRNA levels in immunised ducks. The mRNA expression levels of IFN-α (A), IFN-γ (B), IL-6 (C), and IL-12 (D) are shown as fold change relative to the saline control. Data are presented as the mean ± standard deviation of ducks in the treatment (n = 5). Different superscript letters indicate statistically significant difference (p < 0.05) between groups for the same sampling time point
Fig. 4
Cross-serotype detection by antiserum from ducks immunised with rOmpA + CpG. A – Detection with antiserum of unimmunised ducks. B – Detection with antiserum of ducks immunised with rOmpA + CpG. RA1 – RA serotype 1, RA2 – RA serotype 2, RA6 – RA serotype 6, RA56a – RA of unknown serotype, rOmpA – rOmpA induced for 4 h, and M – protein ladder with labelled molecular weights. The positions of the 65-kDa rOmpA and the 42-kDa OmpA proteins are indicated by the arrows