1
|
Mendoza-Morales LF, Fiorani F, Morán KD, Hecker YP, Cirone KM, Sánchez-López EF, Ramos-Duarte VA, Corigliano MG, Bilbao MG, Clemente M, Moore DP, Sander VA. Immunogenicity, safety and dual DIVA-like character of a recombinant candidate vaccine against neosporosis in cattle. Acta Trop 2024; 257:107293. [PMID: 38901525 DOI: 10.1016/j.actatropica.2024.107293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/14/2024] [Accepted: 06/17/2024] [Indexed: 06/22/2024]
Abstract
Neosporosis is the major infectious cause of abortion and reproductive losses in cattle worldwide; however, there are no available vaccines or drugs to control this disease. Recently, a dual (positive and negative) DIVA-like (Differentiation of Infected from Vaccinated Animals) vaccine was evaluated in a pregnant mouse model of neosporosis, showing promising immunogenic and protective results. The current report aimed to study the safety, the dose-dependent immunogenicity and the dual DIVA-like character of a recombinant subunit vaccine composed of the major surface antigen from Neospora caninum (rNcSAG1) and the carrier/adjuvant Heat shock protein 81.2 from Arabidopsis thaliana (rAtHsp81.2) in cattle. Healthy heifers were separated and assigned to experimental groups A-F and subcutaneously immunized with 2 doses of vaccine formulations 30 days apart as follows: A (n = 4): 50 μg rNcSAG1 + 150 μg rAtHsp81.2; B (n = 4): 200 μg rNcSAG1 + 600 μg rAtHsp81.2; C (n = 4): 500 μg rNcSAG1 + 1,500 μg rAtHsp81.2; D (n = 3): 150 μg rAtHsp81.2; E (n = 3):1,500 μg rAtHsp81.2, and F (n = 3) 2 ml of sterile PBS. The immunization of heifers with the different vaccine or adjuvant doses (groups A-E) was demonstrated to be safe and did not modify the mean value of the evaluated serum biomarkers of metabolic function (GOT/ASP, GPT/ALT, UREA, Glucose and total proteins). The kinetics and magnitude of the immune responses were dose-dependent. The higher dose of the vaccine formulation (group C) stimulated a broad and potent humoral and cellular immune response, characterized by an IgG1/IgG2 isotype profile and IFN-γ secretion. In addition, this was the first time that dual DIVA-like character of a vaccine against neosporosis was demonstrated, allowing us to differentiate vaccinated from infected heifers by two different DIVA compliant test approaches. These results encourage us to evaluate its protective efficacy in infected pregnant cattle in the future.
Collapse
Affiliation(s)
- Luisa Fernanda Mendoza-Morales
- Laboratorio de Biotecnologías en Bovinos y Ovinos, INTECH, CONICET-UNSAM, Intendente Marino Km 8,2; CC 164 (B7130IWA), Chascomús, Buenos Aires, Argentina; Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Buenos Aires, Argentina
| | - Franco Fiorani
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce, Buenos Aires, Argentina; Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria Estación Experimental Agropecuaria Balcarce (CONICET-INTA), Balcarce, Buenos Aires, Argentina
| | - Karen Daiana Morán
- Laboratorio de Reproducción, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), General Pico, La Pampa, Argentina; Facultad de Ciencias Veterinarias, Universidad Nacional de La Pampa, General Pico, La Pampa, Argentina
| | - Yanina Paola Hecker
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria Estación Experimental Agropecuaria Balcarce (CONICET-INTA), Balcarce, Buenos Aires, Argentina
| | - Karina Mariela Cirone
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria Estación Experimental Agropecuaria Balcarce (CONICET-INTA), Balcarce, Buenos Aires, Argentina
| | - Edwin Fernando Sánchez-López
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Buenos Aires, Argentina; Laboratorio de Molecular Farming y Vacunas, INTECH, CONICET-UNSAM, Chascomús, Argentina
| | - Victor Andrés Ramos-Duarte
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Buenos Aires, Argentina; Laboratorio de Molecular Farming y Vacunas, INTECH, CONICET-UNSAM, Chascomús, Argentina
| | - Mariana Georgina Corigliano
- Laboratorio de Biotecnologías en Bovinos y Ovinos, INTECH, CONICET-UNSAM, Intendente Marino Km 8,2; CC 164 (B7130IWA), Chascomús, Buenos Aires, Argentina; Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Buenos Aires, Argentina
| | - María Guillermina Bilbao
- Laboratorio de Reproducción, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), General Pico, La Pampa, Argentina; Facultad de Ciencias Veterinarias, Universidad Nacional de La Pampa, General Pico, La Pampa, Argentina
| | - Marina Clemente
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Buenos Aires, Argentina; Laboratorio de Molecular Farming y Vacunas, INTECH, CONICET-UNSAM, Chascomús, Argentina
| | - Dadín Prando Moore
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce, Buenos Aires, Argentina; Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria Estación Experimental Agropecuaria Balcarce (CONICET-INTA), Balcarce, Buenos Aires, Argentina
| | - Valeria Analía Sander
- Laboratorio de Biotecnologías en Bovinos y Ovinos, INTECH, CONICET-UNSAM, Intendente Marino Km 8,2; CC 164 (B7130IWA), Chascomús, Buenos Aires, Argentina; Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Buenos Aires, Argentina.
| |
Collapse
|
2
|
Bernardes JC, Pinto-Ferreira F, Ladeia WA, Caldart ET, Paschoal ATP, Martins TA, Barreto JVP, Crespi ME, de Barros LD, Nino BDSL, Gonzalez SG, Garcia JL. Seroprevalence and risk factors for Neospora caninum and Toxoplasma gondii in dairy cattle from São Paulo State, Brazil. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2024; 33:e006024. [PMID: 38985053 PMCID: PMC11253822 DOI: 10.1590/s1984-29612024034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 04/16/2024] [Indexed: 07/11/2024]
Abstract
Neospora caninum is a major cause of reproductive loss in cattle worldwide as it leads to abortion and animal repositioning. Although Toxoplasma gondii does not cause a reproductive problem in cattle, consuming raw or uncooked beef poses the risk of transmission. This study aimed to evaluate the occurrence of anti-N. caninum and anti-T. gondii antibodies in dairy cattle in the West and Northwest regions of São Paulo State, Brazil. A total of 653 serum samples from dairy cows were analyzed using an indirect immunofluorescence assay (IFA). Epidemiological data from the farms were associated with the serological results of the animals by logistic regression based on the presence of antibodies. The frequencies of the antibodies against N. caninum and T. gondii were 41.6% (272/653) and 11.5% (75/653), respectively. A statistically significant association was observed between: the serum anti-N. caninum antibodies and breed, history of food supplementation for calves, introduction of outside animals that later presented reproductive problems, and history of reproductive problems by the trimester of gestation. The present study highlights the importance of neosporosis in dairy cattle in the study regions and that the inclusion of this parasite in the investigation of animals with reproductive disorders is important.
Collapse
|
3
|
Hecker YP, Burucúa MM, Fiorani F, Maldonado Rivera JE, Cirone KM, Dorsch MA, Cheuquepán FA, Campero LM, Cantón GJ, Marín MS, Ortega-Mora LM, Moore DP. Reactivation and Foetal Infection in Pregnant Heifers Infected with Neospora caninum Live Tachyzoites at Prepubertal Age. Vaccines (Basel) 2022; 10:vaccines10081175. [PMID: 35893824 PMCID: PMC9330614 DOI: 10.3390/vaccines10081175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/14/2022] [Accepted: 07/22/2022] [Indexed: 12/04/2022] Open
Abstract
Neospora caninum is recognised for causing cattle abortion, provoking severe economic losses in the livestock industry worldwide. The aim of the present study was to evaluate the reactivation and foetal infection in pregnant heifers inoculated with live N. caninum tachyzoites before puberty. A total of 15 30-month-old pregnant heifers were allocated into four groups: animals inoculated with live tachyzoites of NC-Argentina LP1 isolate before puberty and challenged with live tachyzoites of NC-1 strain at 210 days of gestation (DG) (Group A); animals mock inoculated before puberty and challenged with NC-1 strain at 210 DG (Group B), animals inoculated before puberty but not subsequently challenged (Group C); and noninfected and nonchallenged animals (Group D). The results of this study showed that 100% of animals infected before puberty (Groups A and C) suffered reactivation of the infection at the seventh month of gestation. In addition, in three and two calves from Groups A and C, respectively, congenital infection was confirmed. Interestingly, we provide evidence that the use of live N. caninum tachyzoites in young animals as a strategy to induce protection is neither safe nor effective.
Collapse
Affiliation(s)
- Yanina P. Hecker
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Instituto Nacional de Tecnología Agropecuaria (INTA)—Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce 7620, Argentina; (M.M.B.); (F.F.); (K.M.C.); (F.A.C.); (L.M.C.); (G.J.C.); (M.S.M.); (D.P.M.)
- Correspondence: ; Tel.: +54-02266-439100 (ext. 365)
| | - Mercedes M. Burucúa
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Instituto Nacional de Tecnología Agropecuaria (INTA)—Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce 7620, Argentina; (M.M.B.); (F.F.); (K.M.C.); (F.A.C.); (L.M.C.); (G.J.C.); (M.S.M.); (D.P.M.)
| | - Franco Fiorani
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Instituto Nacional de Tecnología Agropecuaria (INTA)—Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce 7620, Argentina; (M.M.B.); (F.F.); (K.M.C.); (F.A.C.); (L.M.C.); (G.J.C.); (M.S.M.); (D.P.M.)
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce 7620, Argentina; (J.E.M.R.); (M.A.D.)
| | - Jaime E. Maldonado Rivera
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce 7620, Argentina; (J.E.M.R.); (M.A.D.)
- Facultad de Ciencias Agropecuarias, Universidad de Cuenca, Cuenca 010205, Ecuador
| | - Karina M. Cirone
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Instituto Nacional de Tecnología Agropecuaria (INTA)—Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce 7620, Argentina; (M.M.B.); (F.F.); (K.M.C.); (F.A.C.); (L.M.C.); (G.J.C.); (M.S.M.); (D.P.M.)
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce 7620, Argentina; (J.E.M.R.); (M.A.D.)
| | - Matías A. Dorsch
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce 7620, Argentina; (J.E.M.R.); (M.A.D.)
- Plataforma de Investigación en Salud Animal, Instituto Nacional de Investigación Agropecuaria (INIA), Estación Experimental La Estanzuela, Colonia 70000, Uruguay
| | - Felipe A. Cheuquepán
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Instituto Nacional de Tecnología Agropecuaria (INTA)—Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce 7620, Argentina; (M.M.B.); (F.F.); (K.M.C.); (F.A.C.); (L.M.C.); (G.J.C.); (M.S.M.); (D.P.M.)
| | - Lucía M. Campero
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Instituto Nacional de Tecnología Agropecuaria (INTA)—Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce 7620, Argentina; (M.M.B.); (F.F.); (K.M.C.); (F.A.C.); (L.M.C.); (G.J.C.); (M.S.M.); (D.P.M.)
| | - Germán J. Cantón
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Instituto Nacional de Tecnología Agropecuaria (INTA)—Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce 7620, Argentina; (M.M.B.); (F.F.); (K.M.C.); (F.A.C.); (L.M.C.); (G.J.C.); (M.S.M.); (D.P.M.)
| | - Maia S. Marín
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Instituto Nacional de Tecnología Agropecuaria (INTA)—Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce 7620, Argentina; (M.M.B.); (F.F.); (K.M.C.); (F.A.C.); (L.M.C.); (G.J.C.); (M.S.M.); (D.P.M.)
| | - Luis M. Ortega-Mora
- SALUVET, Departamento de Sanidad Animal, Facultad de Ciencias Veterinarias, Universidad Complutense de Madrid, 28040 Madrid, Spain;
| | - Dadín P. Moore
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS), Instituto Nacional de Tecnología Agropecuaria (INTA)—Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce 7620, Argentina; (M.M.B.); (F.F.); (K.M.C.); (F.A.C.); (L.M.C.); (G.J.C.); (M.S.M.); (D.P.M.)
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce 7620, Argentina; (J.E.M.R.); (M.A.D.)
| |
Collapse
|
4
|
Novoa MB, Sarli M, Reidel IG, Veaute C, Valentini B, Primo ME. Neospora caninum truncated recombinant proteins formulated with liposomes and CpG-ODNs triggered a humoral immune response in cattle after immunisation and challenge. Vet Immunol Immunopathol 2021; 238:110285. [PMID: 34146834 DOI: 10.1016/j.vetimm.2021.110285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/06/2021] [Accepted: 06/11/2021] [Indexed: 11/29/2022]
Abstract
Abortions caused by Neospora caninum are a serious problem in cattle production and require effective immunoprophylaxis. The objective of this work was to assess the humoral immune response to four recombinant (r) N. caninum antigens in cattle after immunisation and challenge. MIC1 and MIC3 proteins from the micronemes, SRS2 from the surface of tachyzoites, and GRA7 from the dense granules were expressed as truncated recombinant proteins in Escherichia coli. Cationic liposomes (Lip) and CpG oligodeoxynucleotides (CpG-ODNs) were used as adjuvant. Steers were assigned to three groups of six steers each and were inoculated twice subcutaneously, 21 days apart. The rP + Lip + CpG-ODN group received the truncated recombinant proteins rMIC1, rMIC3, rSRS2 and rGRA7 formulated with the adjuvant; the Lip + CpG-ODN group received the adjuvant alone; and the PBS group received sterile phosphate-buffered saline. All steers were subcutaneously challenged with the NC-1 strain of N. caninum 35 days after the second dose of immunisation. Steers from the rP + Lip + CpG-ODN group developed specific IgG, IgG1 and IgG2 against the four recombinant proteins after immunisation. After challenge, IgG against rMIC1 and rMIC3 was detected in rP + Lip + CpG-ODN group and against rSRS2 and rGRA7 in all groups. IgG1 and IgG2 against the four recombinant proteins remained high after challenge in the rP + Lip + CpG-ODN group. Indirect ELISA detected anti-N. caninum antibodies after challenge in all groups, with the highest level of antibodies being detected in the rP + Lip + CpG-ODN group. The recombinant vaccine formulated with rMIC1, rMIC3, rSRS2 and rGRA7 using Lip + CpG-ODN as adjuvant was immunogenic in cattle and the humoral immune response after challenge was enhanced in vaccinated cattle.
Collapse
Affiliation(s)
- María Belén Novoa
- Instituto de Investigación de la Cadena Láctea (INTA-CONICET), Estación Experimental Agropecuaria Rafaela, Route 34, km 227, 2300, Rafaela, Argentina.
| | - Macarena Sarli
- Instituto de Investigación de la Cadena Láctea (INTA-CONICET), Estación Experimental Agropecuaria Rafaela, Route 34, km 227, 2300, Rafaela, Argentina
| | - Ivana Gabriela Reidel
- Laboratorio de Inmunología Experimental, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, S3000ZAA, Santa Fe, Argentina
| | - Carolina Veaute
- Laboratorio de Inmunología Experimental, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, S3000ZAA, Santa Fe, Argentina
| | - Beatriz Valentini
- Instituto de Investigación de la Cadena Láctea (INTA-CONICET), Estación Experimental Agropecuaria Rafaela, Route 34, km 227, 2300, Rafaela, Argentina
| | - María Evangelina Primo
- Instituto de Investigación de la Cadena Láctea (INTA-CONICET), Estación Experimental Agropecuaria Rafaela, Route 34, km 227, 2300, Rafaela, Argentina
| |
Collapse
|
5
|
Hecker YP, Regidor-Cerrillo J, Fiorani F, Horcajo P, Soria I, Gual I, Torioni S, Campero LM, Echaide IE, Álvarez-García G, Ortega-Mora LM, Zamorano PI, Venturini MC, Odeón AC, Cantón GJ, Moore DP. Immune response to Neospora caninum live tachyzoites in prepubertal female calves. Parasitol Res 2019; 118:2945-2955. [PMID: 31485864 DOI: 10.1007/s00436-019-06447-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 08/27/2019] [Indexed: 12/11/2022]
Abstract
The aim of the present study was to characterize the specific immune response in prepubertal female calves inoculated with Neospora caninum. Forty-eight N. caninum-seronegative 6-month-old Angus female calves were randomly allocated into two groups: group A calves were inoculated subcutaneously (sc) with 1 × 106 tachyzoites of the low virulence NC-Argentina LP1 isolate in sterile phosphate-buffered saline (PBS); group B calves were mock inoculated sc with sterile PBS. Calves from group A developed a specific immune response characterized by the production of IgG antibodies and the expression of IFN-γ and TNF-α cytokines. Animals did not present any febrile reaction or reactions at the site of inoculation. Although chronic N. caninum infection was developed in 50% of calves of group A after inoculation, according to the presence of antibodies against rNc-SAG4, antigen characteristic of bradyzoites, N. caninum antibodies dropped below the cut-off of ELISA from day 210 post-inoculation onwards. Future trials using the same group of inoculated animals will allow the characterization of the evolution of the immune response during pregnancy and to determine whether the immunization with the local isolate is able to prevent congenital transmission and to protect against heterologous challenges.
Collapse
Affiliation(s)
- Yanina P Hecker
- National Research Council (CONICET), Buenos Aires, Argentina. .,National Institute of Agrarian Technology (INTA), Buenos Aires, Argentina.
| | - Javier Regidor-Cerrillo
- SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Franco Fiorani
- National Research Council (CONICET), Buenos Aires, Argentina.,National Institute of Agrarian Technology (INTA), Buenos Aires, Argentina.,Faculty of Agrarian Sciences, National University of Mar del Plata, Mar del Plata, Argentina
| | - Pilar Horcajo
- SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Ivana Soria
- National Institute of Agrarian Technology (INTA), Buenos Aires, Argentina
| | - Ignacio Gual
- National Research Council (CONICET), Buenos Aires, Argentina.,Faculty of Agrarian Sciences, National University of Mar del Plata, Mar del Plata, Argentina
| | - Susana Torioni
- National Institute of Agrarian Technology (INTA), Buenos Aires, Argentina
| | - Lucía M Campero
- National Research Council (CONICET), Buenos Aires, Argentina.,Immunoparasitology Laboratory, Faculty of Veterinary Medicine, National University of La Plata, La Plata, Argentina
| | - Ignacio E Echaide
- National Institute of Agrarian Technology (INTA), Buenos Aires, Argentina
| | - Gema Álvarez-García
- SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Luis M Ortega-Mora
- SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Patricia I Zamorano
- National Research Council (CONICET), Buenos Aires, Argentina.,National Institute of Agrarian Technology (INTA), Buenos Aires, Argentina
| | - María C Venturini
- Immunoparasitology Laboratory, Faculty of Veterinary Medicine, National University of La Plata, La Plata, Argentina
| | - Anselmo C Odeón
- National Institute of Agrarian Technology (INTA), Buenos Aires, Argentina
| | - Germán J Cantón
- National Institute of Agrarian Technology (INTA), Buenos Aires, Argentina
| | - Dadín P Moore
- National Research Council (CONICET), Buenos Aires, Argentina.,National Institute of Agrarian Technology (INTA), Buenos Aires, Argentina.,Faculty of Agrarian Sciences, National University of Mar del Plata, Mar del Plata, Argentina
| |
Collapse
|
6
|
Pereyra R, Mansilla FC, Petersen MI, Suarez V, Capozzo AV. Evidence of reduced vertical transmission of Neospora caninum associated with higher IgG1 than IgG2 serum levels and presence of IFN-γ in non-aborting chronically infected cattle under natural condition. Vet Immunol Immunopathol 2019; 208:53-57. [PMID: 30712792 DOI: 10.1016/j.vetimm.2019.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/11/2018] [Accepted: 01/07/2019] [Indexed: 11/17/2022]
Abstract
Neospora caninum infection of cattle can be vertically transmitted, resulting in abortion or birth of infected calves. Vertical transmission occurs both in acutely or chronically infected cattle. There is little information on the immune response needed to prevent endogenous transplacental transmission, particularly from chronically infected cattle to their offspring in a natural environment. In this study, N. caninum seropositive pregnant cattle from three different farms with high avidity antibodies and low IgM titers were selected and their newborn colostrum-deprived calves were tested for anti-N. caninum antibodies. Based on these results, dams were grouped according to their congenital transmission status. The analysis of the immune profile of the chronically-infected pregnant cattle revealed that higher ratio between IgG1 and IgG2 anti-N. caninum serum titers and higher levels of systemic IFN-γ were associated with diminished vertical transmission rates, compared to dams with the opposite profile. Our results evidenced an association between the immune profile and vertical transmission in non-aborting chronically infected dams, and confirm that vertical transmission, even when not leading to abortion, is related to a defined immune profile. This is important information to accomplish successful vaccine development efforts.
Collapse
Affiliation(s)
- Rodrigo Pereyra
- Área de Investigación en Sanidad Animal IIACS-CIAP- Estación experimental Agropecuaria EEA, INTA Cerrillos, Salta, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas, CONICET, Argentina
| | - Florencia Celeste Mansilla
- Instituto de Virología. Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina
| | - Marcos Ivan Petersen
- Consejo Nacional de Investigaciones Científicas y Tecnológicas, CONICET, Argentina; Instituto de Virología. Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina
| | - Victor Suarez
- Área de Investigación en Sanidad Animal IIACS-CIAP- Estación experimental Agropecuaria EEA, INTA Cerrillos, Salta, Argentina
| | - Alejandra Victoria Capozzo
- Consejo Nacional de Investigaciones Científicas y Tecnológicas, CONICET, Argentina; Instituto de Virología. Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina.
| |
Collapse
|
7
|
Type I and type II cytokine production of CD4+ T-cells in immune response biased dairy cattle around calving. Vet Immunol Immunopathol 2018; 199:70-76. [PMID: 29678232 DOI: 10.1016/j.vetimm.2018.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 02/14/2018] [Accepted: 03/01/2018] [Indexed: 11/22/2022]
Abstract
The peripartum period is a period of high stress, transition and management changes for dairy cows. It is associated with higher incidence of both metabolic and pathogenic disease. Both antibody-(AMIR) and cell-(CMIR) mediated immune responses play a key role in the maintenance of health in mammals protecting against extracellular and intracellular pathogens, respectively. Generally, interferon gamma (IFN-γ) has been associated with CMIR, whereas interleukin 4 (IL-4) has been associated with AMIR bias, and interleukin 17 (IL-17A) is associated with pro-inflammatory. It has been previously demonstrated that cows can be classified as high (H), average (A), and low (L) immune responders based upon their AMIR and CMIR to test antigens, and that this classification is associated with disease occurrence throughout lactation. The mechanisms behind these differences in phenotype and the effects of the peripartum period have not been fully investigated. The aim of this study was to determine the effects of the peripartum period on cytokine production of CD4+ T-cells or T helper (Th) cells, key mediators of the adaptive immune response. Immune response phenotyped cows were selected based on H-AMIR/L-CMIR (H-AMIR cows; n = 10) and H-CMIR/L-AMIR (H-CMIR cows; n = 11) response to test antigens. Isolated CD4+ T-cells collected at 28 days before calving (prepartum samples), 4 days after calving (early postpartum samples), and 21 days after calving (late postpartum samples) from these groups were stimulated with Concanavalin-A (ConA) with unstimulated controls. Subsequently, IL-4, IFN-γ, and IL-17A concentrations were quantified by ELISA. Overall, there was no obvious decline in IL-4, IFN-γ or IL-17A close to calving observed from CD4+ T-cells from each of these phenotypically distinct groups of cows. However, CD4+ T-cells isolated from H-CMIR secreted higher amounts of IL-4 (746.43 ± 428 pg/mL), IL-17A (446IL ± 62 pg/mL), and IFN-γ (7755.79 ± 4449 pg/mL) than H-AMIR cows (IL-4 (212.15 ± 121 pg/mL), IL-17A (163.15 ± 87 pg/mL), and IFN-γ (2909.771 ± 1671 pg/mL)) on day 21 after calving, late postpartum. This study indicates a genetic predisposition based on immune response phenotype of cytokine production from CD4+ T-cells around calving.
Collapse
|
8
|
Mansilla FC, Quintana ME, Cardoso NP, Capozzo AV. Fusion of foreign T-cell epitopes and addition of TLR agonists enhance immunity againstNeospora caninumprofilin in cattle. Parasite Immunol 2016; 38:663-669. [DOI: 10.1111/pim.12354] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 08/04/2016] [Indexed: 12/24/2022]
Affiliation(s)
- F. C. Mansilla
- INTA-Instituto de Virología. Centro de Investigaciones en Ciencias Veterinarias y Agronómicas; Buenos Aires Argentina
| | - M. E. Quintana
- INTA-Instituto de Virología. Centro de Investigaciones en Ciencias Veterinarias y Agronómicas; Buenos Aires Argentina
- CONICET. Consejo Nacional de Investigaciones Científicas y Técnicas; Buenos Aires Argentina
| | - N. P. Cardoso
- INTA-Instituto de Virología. Centro de Investigaciones en Ciencias Veterinarias y Agronómicas; Buenos Aires Argentina
- CONICET. Consejo Nacional de Investigaciones Científicas y Técnicas; Buenos Aires Argentina
| | - A. V. Capozzo
- INTA-Instituto de Virología. Centro de Investigaciones en Ciencias Veterinarias y Agronómicas; Buenos Aires Argentina
- CONICET. Consejo Nacional de Investigaciones Científicas y Técnicas; Buenos Aires Argentina
| |
Collapse
|
9
|
Antonello AM, Camillo G, Weber A, Braunig P, Sangioni LA, Vogel FSF. DINÂMICA SOROLÓGICA DE ANTICORPOS CONTRA Neospora caninum DURANTE A GESTAÇÃO DE VACAS NATURALMENTE INFECTADAS. CIÊNCIA ANIMAL BRASILEIRA 2015. [DOI: 10.1590/1089-6891v16i428127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Resumo Neosporose é uma das maiores causas de perdas reprodutivas em rebanhos bovinos. O estágio da gestação em que ocorre a infecção ou o recrudescimento das formas bradizoítas, que se reflete no nível de anticorpos, é um dos fatores que define o futuro da gestação. Portanto, este trabalho visa a traçar um esboço do perfil sorológico de fêmeas naturalmente infectadas durante a gestação. Para isso, amostras séricas de 25 vacas da raça holandesa foram coletadas desde o dia da inseminação artificial até a véspera do parto, em intervalos mensais. Essas amostras foram testadas por imunofluorescência indireta em busca de IgG. Dos 25 animais, somente 13 foram utilizados na análise, por serem soropositivos desde o início ou por se soroconverteram durante a gestação. Observou-se um aumento gradual dos níveis de anticorpos ao longo da gestação, mais evidente na metade final do período. Observou-se também diferença significativa nos títulos de anticorpos entre os períodos iniciais e finais da gestação, sugerindo a reativação de formas bradizoítas. Tais resultados reforçam a ideia da flutuação nos níveis de anticorpos ao longo da gestação, influenciado pela reativação de N. caninum. O conhecimento dessa dinâmica é importante para a patogenia e epidemiologia da infecção bem como para o diagnóstico.
Collapse
|
10
|
Almería S, López-Gatius F. Markers related to the diagnosis and to the risk of abortion in bovine neosporosis. Res Vet Sci 2015; 100:169-75. [PMID: 25841793 DOI: 10.1016/j.rvsc.2015.03.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 03/14/2015] [Indexed: 01/01/2023]
Abstract
Bovine neosporosis has emerged as a main cause of abortion in cattle worldwide. An important question to understand the disease is why not all infected cows abort. In the present review we summarize the knowledge on markers related to the diagnosis and more importantly to the risk of abortion in the infected cow. Markers considered herein include those based on specific antibodies, antibody titers and antibody subtypes, cellular immunological markers, hormones and other proteins related to gestation. The identification of parasite molecules that are specifically identified in the aborting cows might help to understand the mechanism of parasite-associated abortion and control the disease.
Collapse
Affiliation(s)
- Sonia Almería
- Departament de Sanitat i Anatomia Animals, Universitat Autònoma de Barcelona (UAB), 08193 Barcelona, Spain; Centre de Recerca en Sanitat Animal (CReSA) - Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Campus UAB, 08193 Barcelona, Spain.
| | | |
Collapse
|
11
|
Monney T, Hemphill A. Vaccines against neosporosis: what can we learn from the past studies? Exp Parasitol 2014; 140:52-70. [PMID: 24602874 DOI: 10.1016/j.exppara.2014.02.015] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 02/09/2014] [Accepted: 02/18/2014] [Indexed: 10/25/2022]
Abstract
Neospora caninum is an intracellular apicomplexan parasite, which is a leading cause of abortion in cattle; thus neosporosis represents an important veterinary health problem and is of high economic significance. The parasite can infect cattle via trans-placental transmission from an infected cow to its fetus (vertical transmission), or through the oral route via ingestion of food or water contaminated with oocysts that were previously shed with the feces of a canid definitive host (horizontal transmission). Although vaccination was considered a rational strategy to prevent bovine neosporosis, the only commercialized vaccine (Neoguard®) produced ambiguous results with relatively low efficacy, and was recently removed from the market. Therefore, there is a need to develop an efficient vaccine capable of preventing both, the horizontal transmission through infected food or water to a naïve animal as well as the vertical transmission from infected but clinically asymptomatic dams to the fetus. Different vaccine strategies have been investigated, including the use of live attenuated vaccines, killed parasite lysates, total antigens or antigen fractions from killed parasites, and subunit vaccines. The vast majority of experimental studies were performed in mice, and to a certain extent in gerbils, but there is also a large number of investigations that were conducted in cattle and sheep. However, it is difficult to directly compare these studies due to the high variability of the parameters employed. In this review, we will summarize the recent advances made in vaccine development against N. caninum in cattle and in mice and highlight the most important factors, which are likely to influence the degree of protection mediated by vaccination.
Collapse
Affiliation(s)
- Thierry Monney
- Institute of Parasitology, Vetsuisse Faculty, University of Berne, Länggass-Strasse 122, CH-3012 Berne, Switzerland
| | - Andrew Hemphill
- Institute of Parasitology, Vetsuisse Faculty, University of Berne, Länggass-Strasse 122, CH-3012 Berne, Switzerland.
| |
Collapse
|
12
|
Regidor-Cerrillo J, Arranz-Solís D, Benavides J, Gómez-Bautista M, Castro-Hermida JA, Mezo M, Pérez V, Ortega-Mora LM, González-Warleta M. Neospora caninum infection during early pregnancy in cattle: how the isolate influences infection dynamics, clinical outcome and peripheral and local immune responses. Vet Res 2014; 45:10. [PMID: 24479988 PMCID: PMC3922688 DOI: 10.1186/1297-9716-45-10] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 01/22/2014] [Indexed: 11/10/2022] Open
Abstract
This work studies the influence of Neospora caninum intra-species diversity on abortion outcome, infection dynamics in terms of parasite dissemination and peripheral-local immune responses in pregnant cattle. Animals were intravenously inoculated at day 70 of pregnancy with 10⁷ tachyzoites of two isolates showing marked differences in virulence in vitro and in pregnant mouse models: Nc-Spain7, a high virulence isolate, and Nc-Spain8, a low-to-moderate virulence isolate. After inoculation, pregnancy was monitored, and dams were culled when foetal death was detected. Foetal mortality occurred in all infected heifers between days 24 and 49 post-infection (pi), however, it was detected sooner in Nc-Spain7-infected animals (median day = 34) than those inoculated with Nc-Spain8 (median day = 41) with a trend towards significance (P < 0.11). Similar histological lesions were observed in placentomes and in most of the foetuses from the two infected groups. However, parasites were more frequently detected in the placenta and foetuses by PCR and in the foetal brain by immunohistochemistry in Nc-Spain7-infected animals. Specific antibodies were detected starting at day 13 post-infection in all infected cattle, with higher IgG levels in Nc-Spain7-infected group. IFN-γ and IL-4 profiles also varied between infected groups in PBMC stimulation assays. Infected animals showed significant increases in their cytokine mRNA levels (IFN-γ, IL-4, IL-10, IL-12p40 and TNF-α) in the caruncle at time of foetal death. Differences between the infected groups were also observed for cytokine profiles. These results demonstrate the influence of the N. caninum isolate on foetal death outcome, infection dynamics and immune responses in cattle.
Collapse
Affiliation(s)
- Javier Regidor-Cerrillo
- Animal Health Department, SALUVET, Faculty of Veterinary Sciences, Complutense University of Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain.
| | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Serrano-Pérez B, Garcia-Ispierto I, de Sousa NM, Beckers JF, Almería S, López-Gatius F. Gamma interferon production and plasma concentrations of pregnancy-associated glycoproteins 1 and 2 in gestating dairy cows naturally infected with Neospora caninum. Reprod Domest Anim 2014; 49:275-80. [PMID: 24456132 DOI: 10.1111/rda.12267] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 11/22/2013] [Indexed: 11/29/2022]
Abstract
Gamma interferon (IFN-γ) production and cross-breed pregnancy have been attributed a role in protecting dairy cows infected with Neospora caninum against abortion. Plasma levels of pregnancy-associated glycoproteins-1 (PAG-1) are a marker of placental/foetal well-being and of PAG-2 is an abortion risk indicator in chronically N. caninum-infected animals. The present study examines, in cross-breed pregnancies, interactions between IFN-γ production and levels of PAG-1 and PAG-2 in non-aborting naturally Neospora-infected dairy cows. Data were obtained from 60 pregnant Holstein-Friesian cows: 44 Neospora-seropositive and 16 Neospora-seronegative; 12 became pregnant using Holstein-Friesian semen and 48 using Limousin semen. Blood samples were collected on Days 40, 90, 120, 150, 180 and 210 of gestation. Gamma interferon was only detected in the plasma of nine of the 44 Neospora-seropositive cows, all of them became pregnant using Limousin semen. Through GLM procedures, in cows inseminated with Limousin semen and Neospora-seropositive cows showing no IFN-γ production, PAG-1 concentrations were high and increased throughout gestation compared to the levels detected in cows inseminated with Holstein-Friesian semen and Neospora-seropositive cows producing IFN-γ, respectively. In Neospora-seronegative cows and in Neospora-seropositive cows showing no IFN-γ production, significantly increased PAG-2 concentrations were observed on gestation Day 120. Our findings indicate that IFN-γ production correlates negatively and the production of antibodies against N. caninum is uncorrelated with plasma PAG concentrations during gestation in Neospora-infected dairy cows. Accordingly, IFN-γ production could be linked to the transplacental migration of tachyzoites, which may cause a reduction in PAG levels.
Collapse
Affiliation(s)
- B Serrano-Pérez
- Department of Animal Production, Agrotecnio Center, University of Lleida, Lleida, Spain
| | | | | | | | | | | |
Collapse
|
14
|
Hecker Y, Moore D, Quattrocchi V, Regidor-Cerrillo J, Verna A, Leunda M, Morrell E, Ortega-Mora L, Zamorano P, Venturini M, Campero C. Immune response and protection provided by live tachyzoites and native antigens from the NC-6 Argentina strain of Neospora caninum in pregnant heifers. Vet Parasitol 2013; 197:436-46. [DOI: 10.1016/j.vetpar.2013.07.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 07/02/2013] [Accepted: 07/15/2013] [Indexed: 10/26/2022]
|
15
|
Dose-dependent immunogenicity of a soluble Neospora caninum tachyzoite-extract vaccine formulated with a soy lecithin/β-glucan adjuvant in cattle. Vet Parasitol 2013; 197:13-21. [DOI: 10.1016/j.vetpar.2013.04.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 04/10/2013] [Accepted: 04/20/2013] [Indexed: 11/20/2022]
|
16
|
Nishimura M, Kohara J, Kuroda Y, Hiasa J, Tanaka S, Muroi Y, Kojima N, Furuoka H, Nishikawa Y. Oligomannose-coated liposome-entrapped dense granule protein 7 induces protective immune response to Neospora caninum in cattle. Vaccine 2013; 31:3528-35. [PMID: 23742998 DOI: 10.1016/j.vaccine.2013.05.083] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 05/01/2013] [Accepted: 05/21/2013] [Indexed: 11/18/2022]
Abstract
Neospora caninum is an intracellular protozoan parasite that causes abortion in cows. Vaccination is an important strategy for control of neosporosis, and a safe and effective vaccine suitable for cattle is required. Dense granule protein 7 of N. caninum (NcGRA7) is a secretory protein with high antigenicity in hosts. We demonstrated previously that NcGRA7 entrapped in liposomes coated with mannotriose (M3-NcGRA7) could induce a parasite-specific T-helper type 1 immune response and produce humoral antibodies that resulted in increased offspring survival and decreased infection in the brains of mice dams. In the present study, the efficacy of M3-NcGRA7 as a vaccine candidate against N. caninum has been evaluated in cattle (n=12). Cattle were immunized with M3-NcGRA7 containing 50 μg (n=4) or 200 μg NcGRA7 (n=4) subcutaneously twice with a 4-week interval and all cattle including the non-immunized controls (n=4) were inoculated with 10(7) tachyzoites of Nc-1 strain 27 days after the second immunization and euthanized at 85-87 days post infection (dpi). In immunized cattle, NcGRA7-specific antibody production and IFN-γ production in PBMC was induced before challenge. At 3 dpi, body temperature and concentration of serum IFN-γ tended to be higher in control cattle than in the immunized cattle. Furthermore, the parasite load in the brain significantly decreased in cattle immunized with 50 μg M3-NcGRA7 compared with controls. These results suggest that M3-NcGRA7 can induce protective immune responses to N. caninum tachyzoites in cattle, which could lead to practical application of safe and effective subunit vaccines.
Collapse
Affiliation(s)
- Maki Nishimura
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Benavides J, Katzer F, Maley SW, Bartley PM, Cantón G, Palarea-Albaladejo J, Purslow CA, Pang Y, Rocchi MS, Chianini F, Buxton D, Innes EA. High rate of transplacental infection and transmission of Neospora caninum following experimental challenge of cattle at day 210 of gestation. Vet Res 2012; 43:83. [PMID: 23228067 PMCID: PMC3567967 DOI: 10.1186/1297-9716-43-83] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 11/21/2012] [Indexed: 11/10/2022] Open
Abstract
In order to investigate the pathogenesis of neosporosis following a primary infection in late pregnancy, cattle were subcutaneously challenged with 5 × 108Neospora caninum (NC1 isolate) tachyzoites at day 210 of gestation and serial necropsies were then carried out at 14, 28, 42 and 56 days post-infection (dpi). No abortions occurred and all the foetuses were viable at the time of euthanasia. There was a high rate of vertical transmission, as parasites were detected by immunohistochemical labelling and PCR in all the foetuses from 28 dpi. Focal necrotic lesions were observed in the placentomes of the placenta from 28 dpi and showed resolution during later time points, denoted by infiltration of inflammatory cells at 42 dpi and fibrosis at 56 dpi. Foetuses at 28 and 42 dpi showed scarce and isolated lesions which are unlikely to represent a threat to foetal viability. No lesions were observed in the foetuses at 14 or 56 dpi suggesting control of the infection and resolution of the lesions by maternal and foetal immune responses. Once infection was established, it could not be cleared from the host and vertical transmission of the parasite occurred in all infected hosts. Parasite was detected in the placenta at 28 dpi, while in previous experimental infections of cattle at day 70 and 140 of gestation using the same challenge model, it was already present at day 14 post infection. This suggests that a change in the maternal immune response plays a crucial role in limiting the initial infection during the last term of pregnancy.
Collapse
Affiliation(s)
- Julio Benavides
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh, EH26 0PZ, United Kingdom.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Vázquez L, Dacal V, López C, Díaz P, Morrondo P, Díez-Baños P, Panadero R. Antigen-specific antibody isotypes, lymphocyte subsets and cytokine profiles in cattle naturally infested by Hypoderma sp. (Diptera: Oestridae). Vet Parasitol 2012; 184:230-7. [DOI: 10.1016/j.vetpar.2011.09.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 08/12/2011] [Accepted: 09/05/2011] [Indexed: 11/26/2022]
|
19
|
Mansilla FC, Franco-Mahecha OL, Lavoria MÁ, Moore DP, Giraldez AN, Iglesias ME, Wilda M, Capozzo AV. The immune enhancement of a novel soy lecithin/β-glucans based adjuvant on native Neospora caninum tachyzoite extract vaccine in mice. Vaccine 2012; 30:1124-31. [PMID: 22178728 DOI: 10.1016/j.vaccine.2011.12.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 12/01/2011] [Accepted: 12/03/2011] [Indexed: 11/21/2022]
Abstract
Efficient, cost-effective and safe Th1-immunity-inducing vaccine formulations are paramount for achieving protection against Neospora caninum. In this study, a new adjuvant (Providean-AVEC) was used in the development of a N. caninum vaccine and evaluated in a mouse model. Soluble N. caninum tachyzoite native protein extract (sNcAg) was selected as vaccine antigen based on its capacity to activate production of pro-inflammatory cytokines on dendritic cells. Vaccines containing 4 and 0.4 μg of sNcAg, and Providean-AVEC, ISCOM-Matrix or aluminum hydroxide (Alum) were tested in BALB/c mice. While mice vaccinated with 4μg of sNcAg + Providean-AVEC developed specific antibodies shortly after the first dose, the rest of the high antigen payload formulations only induced seroconversion after the booster. Mice immunized with the high payload ISCOM vaccine (4 μg sNcAg) or with either low or high payload Providean-AVEC formulations (0.4 μg and 4 μg sNcAg, respectively) elicited higher IgG2a than IgG1 serum levels, and IFN-γ anamnestic responses with a Th1-cytokine biased profile. These animals had no histological signs of cerebral lesions and parasite burden assessed by quantitative real-time PCR was not detected. Vaccine preparations including Providean-AVEC as adjuvant limited N. canimum multiplication even with only a tenth of antigen payload compared to vaccines containing other adjuvants. Using adjuvants to specifically activate dendritic cells, combined with a careful antigen selection can enhance cellular responses to inert N. caninum vaccines.
Collapse
Affiliation(s)
- Florencia Celeste Mansilla
- Instituto de Ciencia y Tecnología Dr. César Milstein, Saladillo 2468, 1440 Ciudad Autónoma de Buenos Aires, Argentina
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Rocchi MS, Bartley PM, Inglis NF, Collantes-Fernandez E, Entrican G, Katzer F, Innes EA. Selection of Neospora caninum antigens stimulating bovine CD4+ve T cell responses through immuno-potency screening and proteomic approaches. Vet Res 2011; 42:91. [PMID: 21813001 PMCID: PMC3167765 DOI: 10.1186/1297-9716-42-91] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Accepted: 08/03/2011] [Indexed: 11/23/2022] Open
Abstract
Neospora caninum is recognised worldwide as a major cause of bovine infectious abortion. There is a real need to develop effective strategies to control infection during pregnancy which may lead to either abortion or congenital transmission. Due to the intracellular nature of the parasite, cell-mediated immune (CMI) responses involving CD4+ve, CD8+ve, γ/δ TCR+ve T cells and NK cells, as well as production of IFN-γ, are thought to be important for protective immunity. In this study we applied a combination of proteomic and immunological approaches to identify antigens of N. caninum that are recognized by CD4+ve T cell lines derived from infected cattle. Initially, N. caninum tachyzoite Water Soluble Antigens (NcWSA) were fractionated by size-exclusion HPLC and then screened for immune-potency using CD4+ve T cell lines. LC-ESI-MS/MS (liquid chromatography electrospray ionisation tandem mass spectrometry) was employed to catalogue and identify the proteins comprising three immunologically selected fractions and led to the identification of six N. caninum target proteins as well as sixteen functional orthologues of Toxoplasma gondii. This approach allows the screening of biologically reactive antigenic fractions by the immune cells responsible for protection (such as bovine CD4+ve cells) and the subsequent identification of the stimulating components using tandem mass spectrometry.
Collapse
Affiliation(s)
- Mara S Rocchi
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Midlothian, EH26 0PZ, UK.
| | | | | | | | | | | | | |
Collapse
|
21
|
|
22
|
Santolaria P, Almería S, Martínez-Bello D, Nogareda C, Mezo M, Gonzalez-Warleta M, Castro-Hermida J, Pabón M, Yániz J, López-Gatius F. Different humoral mechanisms against Neospora caninum infection in purebreed and crossbreed beef/dairy cattle pregnancies. Vet Parasitol 2011; 178:70-6. [DOI: 10.1016/j.vetpar.2010.12.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 12/04/2010] [Accepted: 12/09/2010] [Indexed: 10/18/2022]
|
23
|
Hu J, Ferroglio E, Trisciuoglio A. Immunoblot diagnosis of infection with Neospora caninum in cattle based on recombinant NcSAG4 Antigen. Parasitol Res 2011; 108:1055-8. [PMID: 21340564 DOI: 10.1007/s00436-011-2286-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2010] [Accepted: 10/06/2010] [Indexed: 11/28/2022]
Abstract
The Neospora caninum (N. caninum) NcSAG4 gene was subcloned into a pET-28a (+) vector and successfully expressed in Escherichia coli as inclusion body, and confirmed by SDS-PAGE and Western blot using anti-His monoclonal antibody. The purified protein was then purified using Ni-NTA affinity chromatography column and recognized by positive serum from N. caninum-infected cattle. Immunoblot (IB) method based on purified recombinant NcSAG4 (rNcSAG4) antigen to detect antibodies against N. caninum in cattle was developed. Subsequently, both IB and ELISA kit were used to test sera (52) from naturally infected/uninfected cattle. Results showed that 50 and 48 out of 52 was positive for IB and ELISA kit, respectively, revealing that IB is more or at least as sensitive as ELISA when used for serodiagnosis of infected cattle.
Collapse
Affiliation(s)
- Jinqiang Hu
- Dipartimento di Produzioni Animali, Epidemiologia ed Ecologia, Università di Torino, No. 44 Via L. Da Vinci, Grugliasco, Torino, 10095, Italy.
| | | | | |
Collapse
|
24
|
Immune response to Neospora caninum native antigens formulated with immune stimulating complexes in calves. Vet Parasitol 2011; 175:245-51. [DOI: 10.1016/j.vetpar.2010.10.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Revised: 08/19/2010] [Accepted: 10/11/2010] [Indexed: 11/22/2022]
|