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Immunogenicity of a Recombinant Hemagglutinin Neuraminidase-Porcine Rubulavirus Produced by Escherichia Coli of Porcine Rubulavirus Gives Protective Immunity of Litter After Challenge

Abstract

Porcine rubulavirus (PRV) is a contagious virus that affects the Mexican swine industry. This work aimed to evaluate the immunogenicity of an recombinant hemagglutinin neuraminidase-Porcine rubulavirus (rHN-PorPV) candidate vaccine on pregnant sows, and the protective efficacy afforded to their 7-day-old suckling piglets against PRV lethal challenge. Three sows were immunized with rHN-PorPV formulated with immune-stimulating complex (ISCOMs) and two sows with rHN-PorPV protein alone as well as a mock-immunized pregnant sow (negative control). Quantitative ELISA detected a high concentration of anti-rHN-PorPV Immunoglobulin G (IgG) antibodies in sow sera after the second dose of vaccine administered on day 14 until farrowing, showing viral-neutralizing and cross-neutralization activity against different variants of PRV. Sera samples from piglets of immunized sows (with or without adjuvant), showed high concentrations of IgG antibodies. As expected, piglets from the negative control sow (n=5), exhibited severe signs of disease and 100% of mortality after PRV challenge study. Conversely, 75% and 87.5% of the piglets born from the rHN-PorPV and the rHN-PorPV-ISCOMs-immunized sows (n=8), survived, respectively, showing milder PRV clinical signs. Our data indicate that rHN-PorPV candidate vaccine produced in Escherichia coli induces efficient humoral response in pregnant sows and that the maternally derived immunity provides high protection to suckling piglets against PRV lethal challenge.

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References
1.
Stephan H, Gay G, Ramirez T . Encephalomyelitis, reproductive failure and corneal opacity (blue eye) in pigs, associated with a paramyxovirus infection. Vet Rec. 1988; 122(1):6-10. DOI: 10.1136/vr.122.1.6. View

2.
Ahlberg V, Lovgren Bengtsson K, Wallgren P, Fossum C . Global transcriptional response to ISCOM-Matrix adjuvant at the site of administration and in the draining lymph node early after intramuscular injection in pigs. Dev Comp Immunol. 2012; 38(1):17-26. DOI: 10.1016/j.dci.2012.03.005. View

3.
Cuevas-Romero J, Blomstrom A, Berg M . Molecular and epidemiological studies of Porcine rubulavirus infection - an overview. Infect Ecol Epidemiol. 2015; 5:29602. PMC: 4653323. DOI: 10.3402/iee.v5.29602. View

4.
Berg M, Hjertner B, Moreno-Lopez J, Linne T . The P gene of the porcine paramyxovirus LPMV encodes three possible polypeptides P, V and C: the P protein mRNA is edited. J Gen Virol. 1992; 73 ( Pt 5):1195-200. DOI: 10.1099/0022-1317-73-5-1195. View

5.
Cuevas-Romero S, Hernandez-Baumgarten E, Kennedy S, Hernandez-Jauregui P, Berg M, Moreno-Lopez J . Long-term RNA persistence of porcine rubulavirus (PorPV-LPMV) after an outbreak of a natural infection: the detection of viral mRNA in sentinel pigs suggests viral transmission. Virus Res. 2014; 188:155-61. DOI: 10.1016/j.virusres.2014.04.012. View