1
|
Camas-Pereyra R, Bautista-García GA, Pérez-Anzúrez G, Duran-Cortes ZC, Reyes-Guerrero DE, Maza-Lopez J, Olmedo-Juárez A, López-Arellano ME. Excreted/Secreted 15-kDa Proteins and Serine Protease Peptides from Haemonchus contortus Act as Immune-Response Enhancers in Lambs. Pathogens 2024; 13:604. [PMID: 39057830 PMCID: PMC11280362 DOI: 10.3390/pathogens13070604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Revised: 07/19/2024] [Accepted: 07/20/2024] [Indexed: 07/28/2024] Open
Abstract
This study assessed the immunoprotective effect in lambs of a native excreted/secreted 15-kDa protein and two synthesised S28 peptides derived from the infective transitory larvae (xL3) and adult stages (AS) of Haemonchus contortus. Twenty-two Pelibuey lambs were divided into negative and positive control groups, as well as immunised lamb groups, with 100 µg of the 15-kDa native protein (15kDaNP) and S28 peptides (S28P). The eggs per gram (EPG) and haematocrit were measured, and AS were counted and morphologically measured. To assess the immunoprotection in lambs, indirect enzyme-linked immunosorbent assays and relative expression analyses of immune cytokines were performed using serum and abomasal samples. Our results showed a 72.28% reduction in adult worms (AW) in the 15kDaNP-immunised group, achieving a high clinical response with 41% haematocrit and low EPG values (436 ± 661). Conversely, the S28P group achieved the highest IgG levels (2.125 ± 0.880 OD), with AW exhibiting the greatest body length (p > 0.05) and upregulation of the IL5 and FCεR1A genes associated with nematode control. The 15kDaNP group showed increased expression of genes related to nematode control and anti-inflammatory responses, including IL4, IL5, IL6, and IL13 (p < 0.05). The S28P and 15kDaNP should be explored as potential vaccines against sheep haemonchosis.
Collapse
Affiliation(s)
- René Camas-Pereyra
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Carr. Fed. Cuernavaca-Cuautla 8534, Jiutepec 62574, Mexico; (R.C.-P.); (D.E.R.-G.); (A.O.-J.)
- Facultad de Medicina Veterinaria y Zootecnia, Ciudad Universitaria, Ciudad de México 04510, Mexico; (G.A.B.-G.); (G.P.-A.); (J.M.-L.)
| | - Génesis Andrea Bautista-García
- Facultad de Medicina Veterinaria y Zootecnia, Ciudad Universitaria, Ciudad de México 04510, Mexico; (G.A.B.-G.); (G.P.-A.); (J.M.-L.)
| | - Gustavo Pérez-Anzúrez
- Facultad de Medicina Veterinaria y Zootecnia, Ciudad Universitaria, Ciudad de México 04510, Mexico; (G.A.B.-G.); (G.P.-A.); (J.M.-L.)
| | - Zaira Carolina Duran-Cortes
- Ingeniería en Biotecnología, Universidad Politécnica del Estado de Morelos, Boulevard Cuauhnauhuac #566, Jiutepec 62550, Mexico;
| | - David Emanuel Reyes-Guerrero
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Carr. Fed. Cuernavaca-Cuautla 8534, Jiutepec 62574, Mexico; (R.C.-P.); (D.E.R.-G.); (A.O.-J.)
- Facultad de Medicina Veterinaria y Zootecnia, Ciudad Universitaria, Ciudad de México 04510, Mexico; (G.A.B.-G.); (G.P.-A.); (J.M.-L.)
| | - Jocelyn Maza-Lopez
- Facultad de Medicina Veterinaria y Zootecnia, Ciudad Universitaria, Ciudad de México 04510, Mexico; (G.A.B.-G.); (G.P.-A.); (J.M.-L.)
| | - Agustín Olmedo-Juárez
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Carr. Fed. Cuernavaca-Cuautla 8534, Jiutepec 62574, Mexico; (R.C.-P.); (D.E.R.-G.); (A.O.-J.)
| | - María Eugenia López-Arellano
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Carr. Fed. Cuernavaca-Cuautla 8534, Jiutepec 62574, Mexico; (R.C.-P.); (D.E.R.-G.); (A.O.-J.)
| |
Collapse
|
2
|
Bouchet C, Umair S, Stasiuk S, Grant W, Green P, Knight J. Target screening using RNA interference in the sheep abomasal nematode parasite Haemonchus contortus. Mol Biochem Parasitol 2024; 260:111648. [PMID: 39004228 DOI: 10.1016/j.molbiopara.2024.111648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 06/25/2024] [Accepted: 07/11/2024] [Indexed: 07/16/2024]
Abstract
RNA interference (RNAi) on parasitic nematodes has been described as a valuable tool for screening putative targets that could be used as novel drug and/or vaccine candidates. This study aimed to set up a pipeline to identify potential targets using RNAi for vaccine/anti-parasite therapy development against Haemonchus contortus, a blood-feeding abomasal nematode parasite. The available H. contortus sequence data was mined for targets, which were tested for essentiality using RNAi electroporation assays. A total of 56 genes were identified and tested for knockdown using electroporation of first-stage larvae (L1) H. contortus with the target double-stranded RNA. Electroporation of L1 proved to be effective overall; 17 targets had a strong phenotype and significant reduction in alive H. contortus, and another 24 had a moderate phenotype with a significant reduction in larvae development. A total of 28 targets showed a significant reduction in the development of H. contortus larvae to the infective stage (L3) following the RNAi assay. Down-regulation of target transcript levels was evaluated in some targets by semi-quantitative PCR. Four out of five genes tested showed complete knockdown of mRNA levels via semi-quantitative PCR, whereas the knockdown was partial for one. In conclusion, the results indicate that the RNAi pathway is confirmed in H. contortus and that several target genes have the potential to be investigated further as possible vaccine candidates.
Collapse
Affiliation(s)
| | - Saleh Umair
- AgResearch Ltd, Private Bag 11-008, Palmerston North, New Zealand
| | - Susan Stasiuk
- AgResearch Ltd, Private Bag 11-008, Palmerston North, New Zealand; Department of Parasitology, University of Calgary Alberta, Canada
| | - Warwick Grant
- AgResearch Ltd, Private Bag 11-008, Palmerston North, New Zealand; Department of Physiology Anatomy and Microbiology, School of Life Sciences, La Trobe University, Bundoora 3083, Australia
| | - Peter Green
- AgResearch Ltd, Private Bag 11-008, Palmerston North, New Zealand
| | | |
Collapse
|
3
|
Price DRG, Steele P, Frew D, McLean K, Androscuk D, Geldhof P, Borloo J, Albaladejo JP, Nisbet AJ, McNeilly TN. Characterisation of protective vaccine antigens from the thiol-containing components of excretory/secretory material of Ostertagia ostertagi. Vet Parasitol 2024; 328:110154. [PMID: 38490160 DOI: 10.1016/j.vetpar.2024.110154] [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: 11/21/2023] [Revised: 02/21/2024] [Accepted: 02/28/2024] [Indexed: 03/17/2024]
Abstract
Previous vaccination trials have demonstrated that thiol proteins affinity purified from Ostertagia ostertagi excretory-secretory products (O. ostertagi ES-thiol) are protective against homologous challenge. Here we have shown that protection induced by this vaccine was consistent across four independent vaccine-challenge experiments. Protection is associated with reduced cumulative faecal egg counts across the duration of the trials, relative to control animals. To better understand the diversity of antigens in O. ostertagi ES-thiol we used high-resolution shotgun proteomics to identify 490 unique proteins in the vaccine preparation. The most numerous ES-thiol proteins, with 91 proteins identified, belong to the sperm-coating protein/Tpx/antigen 5/pathogenesis-related protein 1 (SCP/TAPS) family. This family includes previously identified O. ostertagi vaccine antigens O. ostertagi ASP-1 and ASP-2. The ES-thiol fraction also has numerous proteinases, representing three distinct classes, including: metallo-; aspartyl- and cysteine proteinases. In terms of number of family members, the M12 astacin-like metalloproteinases, with 33 proteins, are the most abundant proteinase family in O. ostertagi ES-thiol. The O. ostertagi ES-thiol proteome provides a comprehensive database of proteins present in this vaccine preparation and will guide future vaccine antigen discovery projects.
Collapse
Affiliation(s)
- Daniel R G Price
- Moredun Research Institute, Pentlands Science Park, Midlothian EH26 0PZ, UK.
| | - Philip Steele
- Moredun Research Institute, Pentlands Science Park, Midlothian EH26 0PZ, UK
| | - David Frew
- Moredun Research Institute, Pentlands Science Park, Midlothian EH26 0PZ, UK
| | - Kevin McLean
- Moredun Research Institute, Pentlands Science Park, Midlothian EH26 0PZ, UK
| | - Dorota Androscuk
- Moredun Research Institute, Pentlands Science Park, Midlothian EH26 0PZ, UK
| | - Peter Geldhof
- Laboratory of Parasitology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Sciences, Ghent University, Belgium
| | - Jimmy Borloo
- Laboratory of Parasitology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Sciences, Ghent University, Belgium
| | - Javier Palarea Albaladejo
- Biomathematics and Statistics Scotland, JCMB, The King's Buildings, Peter Guthrie Tait Road, Edinburgh, Scotland, UK; Department of Computer Science, Applied Mathematics and Statistics, University of Girona, Girona, Spain
| | - Alasdair J Nisbet
- Moredun Research Institute, Pentlands Science Park, Midlothian EH26 0PZ, UK
| | - Tom N McNeilly
- Moredun Research Institute, Pentlands Science Park, Midlothian EH26 0PZ, UK
| |
Collapse
|
4
|
Ortega L, Quesada J, Ruiz A, Conde-Felipe MM, Ferrer O, Muñoz MDC, Molina JA, Rodríguez F, Molina JM. Analysis of Protection and Immune Response against Teladorsagia circumcincta in Goats Immunised with Thiol-Binding Proteins from Adult Worms. Vaccines (Basel) 2024; 12:437. [PMID: 38675819 PMCID: PMC11055008 DOI: 10.3390/vaccines12040437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/11/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024] Open
Abstract
In view of the increasing occurrence of anthelmintic-resistant strains of gastrointestinal nematodes in ruminants, various alternative control strategies have been investigated, such as those based on the induction of protective immune responses by immunisation with parasite antigens. In this study, the protective activity of somatic antigens from adult worms of Teladorsagia circumcincta purified by affinity chromatography on thiol-sepharose was analysed in goats. After challenge, the enriched products induced a slight reduction in the cumulative faecal egg counts (21%) and in the number of worms (23.3%), with a greater effect on female worms, which also showed a reduction in parameters related to their fertility. These parasitological findings were associated with a Th2 immune response, with a prominent local humoral response and an eosinophilic infiltrate in the gastric mucosa (negatively associated with the fertility of female worms and the number of worms, respectively), as well as an infiltration of MCHII+, CD4+, IgG+ and IgA+ cells. However, several analyses showed an increase in CD8+ cells in the mucosa, as well as IL-2 expression in the gastric lymph nodes, which may have been associated with inhibition of protective responses or with the development of mixed Th1/Th2 responses, a finding that should be analysed in future studies.
Collapse
Affiliation(s)
- Leire Ortega
- Parasitology Unit, Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain; (L.O.); (J.Q.); (O.F.); (M.d.C.M.); (J.A.M.); (J.M.M.)
| | - Jessica Quesada
- Parasitology Unit, Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain; (L.O.); (J.Q.); (O.F.); (M.d.C.M.); (J.A.M.); (J.M.M.)
| | - Antonio Ruiz
- Parasitology Unit, Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain; (L.O.); (J.Q.); (O.F.); (M.d.C.M.); (J.A.M.); (J.M.M.)
| | - Magnolia María Conde-Felipe
- Parasitology Unit, Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain; (L.O.); (J.Q.); (O.F.); (M.d.C.M.); (J.A.M.); (J.M.M.)
| | - Otilia Ferrer
- Parasitology Unit, Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain; (L.O.); (J.Q.); (O.F.); (M.d.C.M.); (J.A.M.); (J.M.M.)
- Clinical Veterinary Hospital, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain
| | - María del Carmen Muñoz
- Parasitology Unit, Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain; (L.O.); (J.Q.); (O.F.); (M.d.C.M.); (J.A.M.); (J.M.M.)
- Clinical Veterinary Hospital, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain
| | - José Adrián Molina
- Parasitology Unit, Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain; (L.O.); (J.Q.); (O.F.); (M.d.C.M.); (J.A.M.); (J.M.M.)
| | - Francisco Rodríguez
- Department of Anatomy and Compared Anatomy Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain;
| | - José Manuel Molina
- Parasitology Unit, Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain; (L.O.); (J.Q.); (O.F.); (M.d.C.M.); (J.A.M.); (J.M.M.)
| |
Collapse
|
5
|
Palarea-Albaladejo J, McNeilly TN, Nisbet AJ. A curated multivariate approach to study efficacy and optimisation of a prototype vaccine against teladorsagiasis in sheep. Vet Res Commun 2024; 48:367-379. [PMID: 37707655 PMCID: PMC10810991 DOI: 10.1007/s11259-023-10208-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 08/25/2023] [Indexed: 09/15/2023]
Abstract
This work discusses and demonstrates the novel use of multivariate analysis and data dimensionality reduction techniques to handle the variety and complexity of data generated in efficacy trials for the development of a prototype vaccine to protect sheep against the Teladorsagia circumcincta nematode. A curated collection of data dimension reduction and visualisation techniques, in conjunction with sensible statistical modelling and testing which explicitly model key features of the data, offers a synthetic view of the relationships between the multiple biological parameters measured. New biological insight is gained into the patterns and associations involving antigen-specific antibody levels, antibody avidity and parasitological parameters of efficacy that is not achievable by standard statistical practice in the field. This approach can therefore be used to guide vaccine refinement and simplification through identifying the most immunologically relevant antigens, and it can be analogously implemented for similar studies in other areas. To facilitate this, the associated data and computer codes written for the R open system for statistical computing are made freely available.
Collapse
Affiliation(s)
- Javier Palarea-Albaladejo
- Department of Computer Science, Applied Mathematics and Statistics, University of Girona, Girona, Spain.
- Biomathematics and Statistics Scotland, JCMB, The King's Buildings, Peter Guthrie Tait Road, Edinburgh, Scotland, UK.
| | - Tom N McNeilly
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, Scotland, UK
| | - Alasdair J Nisbet
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, Scotland, UK
| |
Collapse
|
6
|
Al-Jawabreh R, Anderson R, Atkinson LE, Bickford-Smith J, Bradbury RS, Breloer M, Bryant AS, Buonfrate D, Cadd LC, Crooks B, Deiana M, Grant W, Hallem E, Hedtke SM, Hunt V, Khieu V, Kikuchi T, Kounosu A, Lastik D, van Lieshout L, Liu Y, McSorley HJ, McVeigh P, Mousley A, Murcott B, Nevin WD, Nosková E, Pomari E, Reynolds K, Ross K, Streit A, Suleiman M, Tiberti N, Viney M. Strongyloides questions-a research agenda for the future. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230004. [PMID: 38008122 PMCID: PMC10676812 DOI: 10.1098/rstb.2023.0004] [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: 06/15/2023] [Accepted: 09/29/2023] [Indexed: 11/28/2023] Open
Abstract
The Strongyloides genus of parasitic nematodes have a fascinating life cycle and biology, but are also important pathogens of people and a World Health Organization-defined neglected tropical disease. Here, a community of Strongyloides researchers have posed thirteen major questions about Strongyloides biology and infection that sets a Strongyloides research agenda for the future. This article is part of the Theo Murphy meeting issue 'Strongyloides: omics to worm-free populations'.
Collapse
Affiliation(s)
| | - Roy Anderson
- Department of Infectious Disease Epidemiology, Imperial College London, London SW7 2BX, UK
| | - Louise E. Atkinson
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | | | | | - Minka Breloer
- Bernhard Nocht Institute for Tropical Medicine, Hamburg 20359, Germany
| | - Astra S. Bryant
- Department of Physiology and Biophysics, University of Washington, Seattle 98195, USA
| | - Dora Buonfrate
- Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Verona 37024, Italy
| | - Luke C. Cadd
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | - Bethany Crooks
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | - Michela Deiana
- Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Verona 37024, Italy
| | - Warwick Grant
- Department of Environment and Genetics, La Trobe University, Bundoora, Victoria 3083, Australia
| | - Elissa Hallem
- Department of Microbiology, Immunology, and Molecular Genetics, Molecular Biology Institute, University of California Los Angeles, Los Angeles 90095, USA
| | - Shannon M. Hedtke
- Department of Environment and Genetics, La Trobe University, Bundoora, Victoria 3083, Australia
| | - Vicky Hunt
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - Virak Khieu
- National Centre for Parasitology, Entomology and Malaria Control, Cambodia Ministry of Health, Cambodia
| | - Taisei Kikuchi
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8652, Japan
| | - Asuka Kounosu
- Division of Parasitology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Dominika Lastik
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - Lisette van Lieshout
- Leiden University Center for Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Yuchen Liu
- Department of Evolution, Ecology & Behaviour, University of Liverpool, Liverpool L69 7ZB, UK
| | - Henry J. McSorley
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Paul McVeigh
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | - Angela Mousley
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | - Ben Murcott
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - William David Nevin
- Department of Infectious Diseases, Imperial College London, London SW7 2BX, UK
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK
| | - Eva Nosková
- Department of Botany and Zoology, Faculty of Science, Masaryk University, 611 37 Brno, Czech Republic
- Institute of Vertebrate Biology, Czech Academy of Sciences, 603 65 Brno, Czech Republic
| | - Elena Pomari
- Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Verona 37024, Italy
| | - Kieran Reynolds
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - Kirstin Ross
- Environmental Health, College of Science and Engineering, Flinders University, South Australia 5042, Australia
| | - Adrian Streit
- Department of Integrative Evolutionary Biology, Max Planck Institute for Biology Tübingen, Tübingen 72076, Germany
| | - Mona Suleiman
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - Natalia Tiberti
- Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Verona 37024, Italy
| | - Mark Viney
- Department of Evolution, Ecology & Behaviour, University of Liverpool, Liverpool L69 7ZB, UK
| |
Collapse
|
7
|
Xiong L, Chen Y, Chen L, Hua R, Shen N, Yang G. Enhanced protective immunity against Baylisascaris schroederi infection in mice through a multi-antigen cocktail vaccine approach. Parasitol Res 2023; 123:20. [PMID: 38072876 DOI: 10.1007/s00436-023-08016-w] [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: 10/14/2023] [Accepted: 11/25/2023] [Indexed: 12/18/2023]
Abstract
Baylisascaris schroederi is among the most severe intestinal nematodes affecting giant pandas. Developing effective and secure vaccines can be used as a novel strategy for controlling repeated roundworm infection and addressing drug resistance. In our previous study, three recombinant antigens (rBsHP2, rBsGAL, and rBsUP) exhibited promising effects against B. schroederi infection in the mice model. This study extends the findings by formulating four-form cocktail vaccines (GAL+UP, HP2+UP, GAL+HP2, and GAL+HP2+UP) using three B. schroederi recombinant antigens to improve protection in mice further. Additionally, the protective differences after immunizing mice with different doses of cocktail antigens (150 μg, 100 μg, and 50 μg) were analyzed. Administration of rBs(GAL+UP), rBs(HP2+UP), rBs(GAL+HP2), and rBs(GAL+HP2+UP) significantly reduced liver and lung lesions, along with a decrease in L3 larvae by 83.7%, 82.1%, 76.4%, and 75.1%, respectively. These vaccines induced a Th1/Th2 mixed immunity, evidenced by elevated serum antibody levels (IgG, IgG1, IgG2a, IgE, and IgA) and splenocyte cytokines [interferon gamma (IFN-γ), interleukin (IL)-5, and IL-10]. Furthermore, varying cocktail vaccine dosages did not significantly affect protection. The results confirm that a 50 μg rBs(GAL+UP) dosage holds promise as a better candidate vaccine combination against B. schroederi infection, providing a basis for developing the B. schroederi vaccine.
Collapse
Affiliation(s)
- Lang Xiong
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Sichuan, China
| | - Yanxin Chen
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Sichuan, China
| | - Ling Chen
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Sichuan, China
| | - Ruiqi Hua
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Sichuan, China
| | - Nengxing Shen
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Sichuan, China
| | - Guangyou Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Sichuan, China.
| |
Collapse
|
8
|
Zwanenburg L, Borloo J, Decorte B, Bunte MJM, Mokhtari S, Serna S, Reichardt NC, Seys LJM, van Diepen A, Schots A, Wilbers RHP, Hokke CH, Claerebout E, Geldhof P. Plant-based production of a protective vaccine antigen against the bovine parasitic nematode Ostertagia ostertagi. Sci Rep 2023; 13:20488. [PMID: 37993516 PMCID: PMC10665551 DOI: 10.1038/s41598-023-47480-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/14/2023] [Indexed: 11/24/2023] Open
Abstract
The development of effective recombinant vaccines against parasitic nematodes has been challenging and so far mostly unsuccessful. This has also been the case for Ostertagia ostertagi, an economically important abomasal nematode in cattle, applying recombinant versions of the protective native activation-associated secreted proteins (ASP). To gain insight in key elements required to trigger a protective immune response, the protein structure and N-glycosylation of the native ASP and a non-protective Pichia pastoris recombinant ASP were compared. Both antigens had a highly comparable protein structure, but different N-glycan composition. After mimicking the native ASP N-glycosylation via the expression in Nicotiana benthamiana plants, immunisation of calves with these plant-produced recombinants resulted in a significant reduction of 39% in parasite egg output, comparable to the protective efficacy of the native antigen. This study provides a valuable workflow for the development of recombinant vaccines against other parasitic nematodes.
Collapse
Affiliation(s)
- Laurens Zwanenburg
- Laboratory of Parasitology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Jimmy Borloo
- Laboratory of Parasitology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Bregt Decorte
- Laboratory of Parasitology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Myrna J M Bunte
- Laboratory of Nematology, Department of Plant Sciences, Wageningen University & Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Sanaz Mokhtari
- Laboratory of Nematology, Department of Plant Sciences, Wageningen University & Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Sonia Serna
- Glycotechnology Laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, 20014, Donostia San Sebastián, Spain
- CIBER-BBN, Paseo Miramón 194, 20014, San Sebastian, Spain
| | - Niels-C Reichardt
- Glycotechnology Laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, 20014, Donostia San Sebastián, Spain
- CIBER-BBN, Paseo Miramón 194, 20014, San Sebastian, Spain
| | - Leen J M Seys
- Laboratory of Parasitology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Angela van Diepen
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Arjen Schots
- Laboratory of Nematology, Department of Plant Sciences, Wageningen University & Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Ruud H P Wilbers
- Laboratory of Nematology, Department of Plant Sciences, Wageningen University & Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Cornelis H Hokke
- Department of Parasitology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Edwin Claerebout
- Laboratory of Parasitology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Peter Geldhof
- Laboratory of Parasitology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium.
| |
Collapse
|
9
|
Maritz-Olivier C, Ferreira M, Olivier NA, Crafford J, Stutzer C. Mining gene expression data for rational identification of novel drug targets and vaccine candidates against the cattle tick, Rhipicephalus microplus. EXPERIMENTAL & APPLIED ACAROLOGY 2023; 91:291-317. [PMID: 37755526 PMCID: PMC10562289 DOI: 10.1007/s10493-023-00838-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/09/2023] [Indexed: 09/28/2023]
Abstract
Control of complex parasites via vaccination remains challenging, with the current combination of vaccines and small drugs remaining the choice for an integrated control strategy. Studies conducted to date, are providing evidence that multicomponent vaccines will be needed for the development of protective vaccines against endo- and ectoparasites, though multicomponent vaccines require an in-depth understanding of parasite biology which remains insufficient for ticks. With the rapid development and spread of acaricide resistance in ticks, new targets for acaricide development also remains to be identified, along with novel targets that can be exploited for the design of lead compounds. In this study, we analysed the differential gene expression of Rhipicephalus microplus ticks that were fed on cattle vaccinated with a multi-component vaccine (Bm86 and 3 putative Bm86-binding proteins). The data was scrutinised for the identification of vaccine targets, small drug targets and novel pathways that can be evaluated in future studies. Limitations associated with targeting novel proteins for vaccine and/or drug design is also discussed and placed into the context of challenges arising when targeting large protein families and intracellular localised proteins. Lastly, this study provide insight into how Bm86-based vaccines may reduce successful uptake and digestion of the bloodmeal and overall tick fecundity.
Collapse
Affiliation(s)
- Christine Maritz-Olivier
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, Gauteng, South Africa.
| | - Mariëtte Ferreira
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, Gauteng, South Africa
| | - Nicholas A Olivier
- DNA Microarray Laboratory, Department of Plant Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, Gauteng, South Africa
| | - Jan Crafford
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, Gauteng, South Africa
| | - Christian Stutzer
- Department of Biochemistry, Genetics and Microbiology, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, Gauteng, South Africa.
| |
Collapse
|
10
|
Pérez-Hernández T, Hernández JN, Machín C, McNeilly TN, Nisbet AJ, Matthews JB, Burgess STG, González JF. Exploring the transcriptomic changes underlying recombinant vaccine efficacy against Teladorsagia circumcincta in 3-month-old lambs. Vet Parasitol 2023; 320:109960. [PMID: 37269732 DOI: 10.1016/j.vetpar.2023.109960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/05/2023]
Abstract
Teladorsagia circumcincta is an abomasal parasitic nematode that can cause serious issues in small ruminant production, which are aggravated by drug resistance. Vaccines have been suggested as a feasible, long-lasting alternative for control since adaptation to the host's immune mechanisms by helminths develops at a much slower pace than anthelmintic resistance. Recently, a T. circumcincta recombinant subunit vaccine yielded over a 60% reduction in egg excretion and worm burden and induced strong humoral and cellular anti-helminth responses in vaccinated 3-month-old Canaria Hair Breed (CHB) lambs, but Canaria Sheep (CS) of a similar age were not protected by the vaccine. Here, we compared the transcriptomic profiles in the abomasal lymph nodes of such 3-month-old CHB and CS vaccinates 40 days after infection with T. circumcincta to understand differences in responsiveness at the molecular level. In the CS, differentially expressed genes (DEG) identified were related to general immunity processes such as antigen presentation or antimicrobial proteins and down-regulation of inflammation and immune response through regulatory T cell-associated genes. However, upregulated genes in CHB vaccinates were associated with type-2 oriented immune responses, i.e., immunoglobulin production, activation of eosinophils, as well as tissue structure and wound repair-related genes and protein metabolism pathways such as DNA and RNA processing. These results highlight potentially more optimal timing and orientation of immune responses in CHB sheep compared to CS associated with vaccine-induced protection. The data obtained in this study thus deepens our understanding of variations in responsiveness to vaccination in young lamb and provides insights for vaccine refinement strategies.
Collapse
Affiliation(s)
- Tara Pérez-Hernández
- Instituto Universitario Sanidad Animal y Seguridad Alimentaria, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, Spain
| | - Julia N Hernández
- Instituto Universitario Sanidad Animal y Seguridad Alimentaria, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, Spain.
| | - Cynthia Machín
- Instituto Universitario Sanidad Animal y Seguridad Alimentaria, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, Spain
| | | | | | | | | | - Jorge F González
- Instituto Universitario Sanidad Animal y Seguridad Alimentaria, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, Spain
| |
Collapse
|
11
|
Yaman Y, Bay V, Sevim S, Aymaz R, Keleş M, Önaldi AT, Özüiçli M, Şenlik B, Koncagül S, Yilmaz O, Ün C. Ovine PAPPA2 gene coding variants are linked to decreased fecal egg shedding in native Turkish sheep naturally infected with gastrointestinal nematodes. Trop Anim Health Prod 2023; 55:186. [PMID: 37130990 DOI: 10.1007/s11250-023-03612-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 04/27/2023] [Indexed: 05/04/2023]
Abstract
In this study, the association between PAPPA2 coding variants and gastrointestinal (GI) nematode fecal egg count (FEC) score in adult Turkish sheep was investigated. For this purpose, the FEC score was determined in adult sheep from six breeds: Karacabey Merino (n = 137), Kivircik (n = 116), Cine capari (n = 109), Karakacan (n = 102), Imroz (n = 73), and Chios (n = 50). Sheep were classified as shedders or non-shedders within breeds and flocks. The first group was the fecal egg shedders (> 50 per gram of feces), and the second group was the no fecal egg shedders (≤ 50 per gram of feces). The exon 1, exon 2, exon 5, exon 7, and a part of 5'UTR of the ovine PAPPA2 gene were genotyped by Sanger sequencing of these two groups. Fourteen synonymous and three non-synonymous single-nucleotide polymorphisms (SNPs) were found. The non-synonymous SNPs, D109N, D391H, and L409R variants, are reported for the first time. Two haplotype blocks were constructed on exon 2 and exon 7. The specific haplotype, C391G424G449T473C515A542 on the exon 2 that carries the 391H variant, was tested against four other common haplotypes. Our results indicate that C391G424G449T473C515A542 haplotype was significantly associated with fecal egg shedding status in adult Turkish sheep (p-value, 0.044).
Collapse
Affiliation(s)
- Yalçın Yaman
- Department of Genetics, Faculty of Veterinary Medicine, Siirt University, 56000, Siirt, Turkey
| | - Veysel Bay
- Department of Animal Science, Faculty of Agriculture, Ege University, 35100, İzmir, Turkey.
| | - Semih Sevim
- District Directorate of Agriculture and Forestry, 09800, Nazilli, Aydın, Turkey
- Department of Breeding and Genetics, Sheep Breeding and Research Institute, 10200, Bandirma, Balikesir, Turkey
| | - Ramazan Aymaz
- Department of Breeding and Genetics, Sheep Breeding and Research Institute, 10200, Bandirma, Balikesir, Turkey
| | - Murat Keleş
- Department of Breeding and Genetics, Sheep Breeding and Research Institute, 10200, Bandirma, Balikesir, Turkey
| | - A Taner Önaldi
- Bahri Dağdaş International Research Institute, 42000, Konya, Turkey
| | - Mehmet Özüiçli
- Department of Parasitology, Veterinary Faculty, Balıkesir University, 10000, Balıkesir, Turkey
| | - Bayram Şenlik
- Department of Parasitology, Veterinary Faculty, Uludag University, 16000, Bursa, Turkey
| | - Seyrani Koncagül
- Department of Animal Science, Faculty of Agriculture, Ankara University, 06000, Ankara, Turkey
| | - Onur Yilmaz
- Department of Animal Science, Agricultural Faculty, Adnan Menderes University, 09000, Aydın, Turkey
| | - Cemal Ün
- Department of Biology, Faculty of Science, Ege University, 35100, İzmir, Turkey
| |
Collapse
|
12
|
Molina JM, Hernández YI, Ferrer O, Conde-Felipe MM, Rodríguez F, Ruiz A. Immunization with thiol-binding proteins from Haemonchus contortus adult worms partially protects goats against infection during prepatency. Exp Parasitol 2023; 248:108512. [PMID: 36965594 DOI: 10.1016/j.exppara.2023.108512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/25/2022] [Accepted: 03/16/2023] [Indexed: 03/27/2023]
Abstract
To contribute of the knowledge of the immune mechanisms underlying the response to the immunization of goats with thiol-binding proteins fractions (PBS-TSBP) from Haemonchus contortus (H. contortus) adult worms, this study analyzed the degree of protection and the immune responses developed against the parasite after vaccination with this antigenic complex during the time-elapsing between challenge with L3 of the parasite and the development of adult worms, evidenced by the appearance of first faecal eggs (prepatent period or prepatency). Goat kids immunized with PBS-TBSP generated an immune response during the prepatency which translates into a reduction in the number of worms, as well as a lower reduction on packed cell volume and plasma protein levels in relation to the non-vaccinated animals. As previously described in other studies carried out after the prepatent period, this protection was associated with a systemic humoral response. At the local level, a specific humoral response was also observed, together with an immune-inflammatory infiltrate in the gastric mucosa of MCH-II + cells and CD4+ lymphocytes, whose number was associated with a reduction in the number of worms and an increase in plasma proteins. A high peripheral eosinophilia was detected, but no corresponding increased infiltration of the gastric mucosa by eosinophils or globular leukocytes was observed. In agreement with previous data on the immunolocalization of the antigens used here, the results obtained contribute to the idea that these may be excretion/secretion (E/S) products necessary for parasite survival, whose inactivation during the larval and/or pre-adult stages may have contributed to immunoprotection.
Collapse
Affiliation(s)
- J M Molina
- Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain.
| | - Y I Hernández
- Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain.
| | - O Ferrer
- Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain.
| | - M M Conde-Felipe
- Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain.
| | - F Rodríguez
- Department of Anatomy and Compared Anatomy Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Spain.
| | - A Ruiz
- Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain.
| |
Collapse
|
13
|
Hassan SU, Chua EG, Paz EA, Tay CY, Greeff JC, Palmer DG, Dudchenko O, Aiden EL, Martin GB, Kaur P. Chromosome-length genome assembly of Teladorsagia circumcincta - a globally important helminth parasite in livestock. BMC Genomics 2023; 24:74. [PMID: 36792983 PMCID: PMC9933375 DOI: 10.1186/s12864-023-09172-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 02/08/2023] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND Gastrointestinal (GIT) helminthiasis is a global problem that affects livestock health, especially in small ruminants. One of the major helminth parasites of sheep and goats, Teladorsagia circumcincta, infects the abomasum and causes production losses, reductions in weight gain, diarrhoea and, in some cases, death in young animals. Control strategies have relied heavily on the use of anthelmintic medication but, unfortunately, T. circumcincta has developed resistance, as have many helminths. Vaccination offers a sustainable and practical solution, but there is no commercially available vaccine to prevent Teladorsagiosis. The discovery of new strategies for controlling T. circumcincta, such as novel vaccine targets and drug candidates, would be greatly accelerated by the availability of better quality, chromosome-length, genome assembly because it would allow the identification of key genetic determinants of the pathophysiology of infection and host-parasite interaction. The available draft genome assembly of T. circumcincta (GCA_002352805.1) is highly fragmented and thus impedes large-scale investigations of population and functional genomics. RESULTS We have constructed a high-quality reference genome, with chromosome-length scaffolds, by purging alternative haplotypes from the existing draft genome assembly and scaffolding the result using chromosome conformation, capture-based, in situ Hi-C technique. The improved (Hi-C) assembly resulted in six chromosome-length scaffolds with length ranging from 66.6 Mbp to 49.6 Mbp, 35% fewer sequences and reduction in size. Substantial improvements were also achieved in both the values for N50 (57.1 Mbp) and L50 (5 Mbp). A higher and comparable level of genome and proteome completeness was achieved for Hi-C assembly on BUSCO parameters. The Hi-C assembly had a greater synteny and number of orthologs with a closely related nematode, Haemonchus contortus. CONCLUSION This improved genomic resource is suitable as a foundation for the identification of potential targets for vaccine and drug development.
Collapse
Affiliation(s)
- Shamshad Ul Hassan
- grid.1012.20000 0004 1936 7910UWA School of Agriculture and Environment, The University of Western Australia, 6009 Crawley, WA Australia ,grid.1012.20000 0004 1936 7910Helicobacter Research Laboratory, The Marshall Centre for Infectious Disease Research and Training, School of Biomedical Sciences, University of Western Australia, Perth, WA Australia
| | - Eng Guan Chua
- grid.1012.20000 0004 1936 7910Helicobacter Research Laboratory, The Marshall Centre for Infectious Disease Research and Training, School of Biomedical Sciences, University of Western Australia, Perth, WA Australia
| | - Erwin A. Paz
- grid.1012.20000 0004 1936 7910UWA School of Agriculture and Environment, The University of Western Australia, 6009 Crawley, WA Australia ,grid.1012.20000 0004 1936 7910Helicobacter Research Laboratory, The Marshall Centre for Infectious Disease Research and Training, School of Biomedical Sciences, University of Western Australia, Perth, WA Australia
| | - Chin Yen Tay
- grid.1012.20000 0004 1936 7910Helicobacter Research Laboratory, The Marshall Centre for Infectious Disease Research and Training, School of Biomedical Sciences, University of Western Australia, Perth, WA Australia
| | - Johan C. Greeff
- grid.493004.aDepartment of Primary Industries and Regional Development, Western Australia 3 Baron Hay Court, South Perth, 6151 WA Australia
| | - Dieter G. Palmer
- grid.493004.aDepartment of Primary Industries and Regional Development, Western Australia 3 Baron Hay Court, South Perth, 6151 WA Australia
| | - Olga Dudchenko
- grid.39382.330000 0001 2160 926XThe Center for Genome Architecture, Department of Molecular and Human Genetics, Baylor College of Medicine, 77030 Houston, TX USA ,grid.21940.3e0000 0004 1936 8278Center for Theoretical Biological Physics, Rice University, 77005 Houston, TX USA
| | - Erez Lieberman Aiden
- grid.39382.330000 0001 2160 926XThe Center for Genome Architecture, Department of Molecular and Human Genetics, Baylor College of Medicine, 77030 Houston, TX USA ,grid.21940.3e0000 0004 1936 8278Center for Theoretical Biological Physics, Rice University, 77005 Houston, TX USA ,Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech, Pudong China ,grid.66859.340000 0004 0546 1623Broad Institute of MIT and Harvard, Cambridge, MA USA
| | - Graeme B. Martin
- grid.1012.20000 0004 1936 7910UWA School of Agriculture and Environment, The University of Western Australia, 6009 Crawley, WA Australia
| | - Parwinder Kaur
- UWA School of Agriculture and Environment, The University of Western Australia, 6009, Crawley, WA, Australia.
| |
Collapse
|
14
|
Adduci I, Sajovitz F, Hinney B, Lichtmannsperger K, Joachim A, Wittek T, Yan S. Haemonchosis in Sheep and Goats, Control Strategies and Development of Vaccines against Haemonchus contortus. Animals (Basel) 2022; 12:ani12182339. [PMID: 36139199 PMCID: PMC9495197 DOI: 10.3390/ani12182339] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/20/2022] [Accepted: 09/02/2022] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Haemonchus contortus is the most pathogenic blood-feeding parasitic nematode in sheep and goats, threatening animal welfare and causing tremendous economic losses to the small ruminant industry. This comprehensive review article sums up current control strategies, worm-derived antigens and recent advances in anti-Haemonchus vaccine development. New insights into antigen engineering and general considerations for clinical trials are discussed here. Abstract The evolutionary success of parasitic worms causes significant economic losses and animal health problems, including in the small ruminant industry. The hematophagous nematode Haemonchus contortus is a common endoparasite that infects wild and domestic ruminants worldwide, especially in tropical and subtropical regions. To date, the most commonly applied control strategy is the administration of anthelminthic drugs. The main disadvantages of these chemicals are their ecotoxic effects, the necessary withdrawal period (especially important in dairy animals) and the increasing development of resistance. Vaccines offer an attractive alternative control strategy against Haemonchus infections. In previous years, several potential vaccine antigens prepared from H. contortus using the latest technologies have been assessed in clinical trials using different methods and strategies. This review highlights the current state of knowledge on anti-H. contortus vaccines (covering native, recombinant and DNA-based vaccines), including an evaluation, as well a discussion of the challenges and achievements in developing protective, efficient, and long-lasting vaccines to control H. contortus infection and haemonchosis in small ruminants. This paper also addresses novel developments tackling the challenge of glycosylation of putative candidates in recombinant form.
Collapse
Affiliation(s)
- Isabella Adduci
- Institute of Parasitology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Wien, Austria
| | - Floriana Sajovitz
- University Clinic for Ruminants, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Wien, Austria
| | - Barbara Hinney
- Institute of Parasitology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Wien, Austria
| | - Katharina Lichtmannsperger
- University Clinic for Ruminants, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Wien, Austria
| | - Anja Joachim
- Institute of Parasitology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Wien, Austria
| | - Thomas Wittek
- University Clinic for Ruminants, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Wien, Austria
| | - Shi Yan
- Institute of Parasitology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Wien, Austria
- Correspondence:
| |
Collapse
|
15
|
Hassan NMF, Ghazy AA. Advances in diagnosis and control of anthelmintic resistant gastrointestinal helminths infecting ruminants. J Parasit Dis 2022; 46:901-915. [PMID: 36091263 PMCID: PMC9458815 DOI: 10.1007/s12639-021-01457-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 10/25/2021] [Indexed: 11/26/2022] Open
Abstract
Infection with gastrointestinal helminths is widely spread among ruminant causing severe losses and adversely affects the livestock husbandry. Synthetic chemotherapeutics have been utilized throughout years, as a means of combating helminthiasis. Anthelmintic resistance (AR) has a serious concern on livestock industry which, mainly arises as outcome of misuse, improper dosing and frequent utilization of the synthetic drugs.Various gastrointestinal helminths have the capability to survive the therapeutic dose of anthelmintics and become resistant to the major anthelmintic classes. Early diagnosis might delay or reduce the risk of AR. Conventional phenotyping methods were commonly used for detection of anthelmintic resistant helminths, but appeared to lack of sensitivity, especially when the frequency of resistant allele is very low. Several molecular assays were carried out to detect the AR with greater accuracy. Sustainable effective preventive and control measures for gastrointestinal helminths infection remain the corner stone to overcome AR. Rational use of anthelmintics with keeping unexposed proportion of worm populations, could have the potentiality to maintain and prolong the efficacy of anthelmintics. Several alternative anthelmintic treatments might offer valuable solutions either alone or adjunct to synthetic drugs to dilute the spread of resistance alleles among the helminths population. This article reviews current status of various diagnostic methods and control measures for anthelmintic resistant gastrointestinal helminths infecting ruminants and tries to present a practical protocol to avoid or delay the development of AR.
Collapse
Affiliation(s)
- Noha M. F. Hassan
- Department of Parasitology and Animal Diseases, National Research Centre, P.O. Box: 12622, Cairo, Egypt
| | - Alaa A. Ghazy
- Department of Parasitology and Animal Diseases, National Research Centre, P.O. Box: 12622, Cairo, Egypt
| |
Collapse
|
16
|
Liu W, McNeilly TN, Mitchell M, Burgess STG, Nisbet AJ, Matthews JB, Babayan SA. Vaccine-induced time- and age-dependent mucosal immunity to gastrointestinal parasite infection. NPJ Vaccines 2022; 7:78. [PMID: 35798788 PMCID: PMC9262902 DOI: 10.1038/s41541-022-00501-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 06/13/2022] [Indexed: 11/10/2022] Open
Abstract
Individuals vary broadly in their response to vaccination and subsequent challenge infection, with poor vaccine responders causing persistence of both infection and transmission in populations. Yet despite having substantial economic and societal impact, the immune mechanisms that underlie such variability, especially in infected tissues, remain poorly understood. Here, to characterise how antihelminthic immunity at the mucosal site of infection developed in vaccinated lambs, we inserted gastric cannulae into the abomasa of three-month- and six-month-old lambs and longitudinally analysed their local immune response during subsequent challenge infection. The vaccine induced broad changes in pre-challenge abomasal immune profiles and reduced parasite burden and egg output post-challenge, regardless of age. However, age affected how vaccinated lambs responded to infection across multiple immune pathways: adaptive immune pathways were typically age-dependent. Identification of age-dependent and age-independent protective immune pathways may help refine the formulation of vaccines, and indicate specificities of pathogen-specific immunity more generally.
Collapse
Affiliation(s)
- Wei Liu
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, G12 8QQ, Scotland, UK
| | - Tom N McNeilly
- The Moredun Research Institute, Pentlands Science Park, Scotland, EH26 0PZ, UK.
| | - Mairi Mitchell
- The Moredun Research Institute, Pentlands Science Park, Scotland, EH26 0PZ, UK
| | - Stewart T G Burgess
- The Moredun Research Institute, Pentlands Science Park, Scotland, EH26 0PZ, UK
| | - Alasdair J Nisbet
- The Moredun Research Institute, Pentlands Science Park, Scotland, EH26 0PZ, UK
| | - Jacqueline B Matthews
- The Moredun Research Institute, Pentlands Science Park, Scotland, EH26 0PZ, UK.,Roslin Technologies Limited, Roslin Innovation Centre, University of Edinburgh, Easter Bush, Scotland, EH25 9RG, UK
| | - Simon A Babayan
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, G12 8QQ, Scotland, UK. .,The Moredun Research Institute, Pentlands Science Park, Scotland, EH26 0PZ, UK.
| |
Collapse
|
17
|
Differences in the protection elicited by a recombinant Teladorsagia circumcincta vaccine in weaned lambs of two Canarian sheep breeds. Vet Parasitol 2022; 306:109722. [DOI: 10.1016/j.vetpar.2022.109722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 11/21/2022]
|
18
|
Tian X, Lu M, Bu Y, Zhang Y, Aimulajiang K, Liang M, Li C, Yan R, Xu L, Song X, Li X. Immunization With Recombinant Haemonchus contortus Y75B8A.8 Partially Protects Local Crossbred Female Goats From Haemonchus contortus Infection. Front Vet Sci 2022; 9:765700. [PMID: 35445096 PMCID: PMC9014092 DOI: 10.3389/fvets.2022.765700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 02/04/2022] [Indexed: 11/13/2022] Open
Abstract
Haemonchus contortus Y75B8A.8 (Hc8) derived from H. contortus excretory–secretory (ES) products was identified as a functional inhibitor of goat interleukin 2 (IL-2). It may act as a vaccine candidate for the development of therapeutic strategies against H. contortus infection. In this research, recombinant Hc8 (rHc8) and goat anti-rHc8 polyclonal antibodies were employed to evaluate the protective capacities of Hc8 antigen against H. contortus infections via active and passive immunization trials, respectively. In both trials, local crossbred female goats aged 9–12 months old were randomly divided into three groups, five in each group, respectively. Parasitological examinations, including fecal egg counts (FEC), cumulative FEC (cFEC), and worm burdens, were performed. In addition, antibody levels in mucosal homogenate (MH) samples and hematological and immunological parameters were detected. In the passive trial, goats were intravenously immunized with 5 mg total IgG containing anti-rHc8 goat polyclonal antibodies. After twice immunization, compared with the challenged control group, cFEC was reduced by 39%. In addition, there was a 46% reduction of worm burdens compared with the challenged controls. In the active immunization trials, 500 μg of recombinant Hc8 protein was given subcutaneously twice to 9–12-month-old local crossbred female goats with a 2-week interval, resulting in the generation of high levels of antigen-specific circulating antibodies. Besides, cFEC and abomasal worm burden were reduced by 70 and 55%, respectively, compared with the challenged control group. In addition, immunized goats had higher mucosal homogenate IgA and hemoglobin levels than the challenged controls in both passive and active immunization trials. These preliminary results demonstrated the immunoprophylactic effects of Hc8 antigen and will inform new studies on ES proteins in developing subunit recombinant vaccines against H. contortus.
Collapse
Affiliation(s)
- Xiaowei Tian
- Xinxiang Key Laboratory of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China.,MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Mingmin Lu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Yongqian Bu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Yang Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Kalibixiati Aimulajiang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Meng Liang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Charles Li
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD, United States
| | - Ruofeng Yan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Lixin Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Xiaokai Song
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Xiangrui Li
- Xinxiang Key Laboratory of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China.,MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| |
Collapse
|
19
|
Nematode Orthologs of Macrophage Migration Inhibitory Factor (MIF) as Modulators of the Host Immune Response and Potential Therapeutic Targets. Pathogens 2022; 11:pathogens11020258. [PMID: 35215200 PMCID: PMC8877345 DOI: 10.3390/pathogens11020258] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/03/2022] [Accepted: 02/14/2022] [Indexed: 01/27/2023] Open
Abstract
One of the adaptations of nematodes, which allows long-term survival in the host, is the production of proteins with immunomodulatory properties. The parasites secrete numerous homologs of human immune mediators, such as macrophage migration inhibitory factor (MIF), which is a substantial regulator of the inflammatory immune response. Homologs of mammalian MIF have been recognized in many species of nematode parasites, but their role has not been fully understood. The application of molecular biology and genetic engineering methods, including the production of recombinant proteins, has enabled better characterization of their structure and properties. This review provides insight into the current state of knowledge on MIF homologs produced by nematodes, as well as their structure, enzymatic activity, tissue expression pattern, impact on the host immune system, and potential use in the treatment of parasitic, inflammatory, and autoimmune diseases.
Collapse
|
20
|
Ortega L, Quesada J, Ruiz A, Conde-Felipe MM, Ferrer O, Rodríguez F, Molina JM. Local immune response of Canarian Majorera goats infected with Teladorsagia circumcincta. Parasit Vectors 2022; 15:25. [PMID: 35033166 PMCID: PMC8760786 DOI: 10.1186/s13071-021-05145-y] [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: 08/10/2021] [Accepted: 12/28/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Due to increased anthelmintic resistance, alternative methods to drugs are necessary to control gastrointestinal nematodes (GINs). Some of the most promising alternatives are based on the immune response of the host, such as the selection of genetically resistant breeds or the use of vaccines against these parasites. Given the limited information available on the immune response against GINs in goats, this study investigated the local immune response of goat kids of an indigenous Canary Islands breed (Majorera breed) experimentally infected with Teladorsagia circumcincta, one of the most pathogenic and prevalent GIN species. METHODS For this purpose, the relationship between different parasitological (number of mature and immature worms, worm length, and number of intrauterine eggs) and immunological parameters at the local level (related to both the humoral and cellular immune response) was analyzed at early (1 week post-infection [wpi]) and late (8 wpi) stages of infection. RESULTS Primary infection of goat kids with T. circumcincta infective larvae (L3) generated a complex immune response that could be defined as Th2 type, characterized by increased infiltration in abomasal tissues of several effector cells as well as a progressive presence of specific antibodies against parasitic antigens in the gastric mucus. Cellular responses were evidenced from 1 wpi onward, showing an increase in antigen-presenting cells and various lymphocyte subsets in the gastric mucosa. CONCLUSIONS The complexity of the host response was evidenced by statistically significant changes in the number of all these subpopulations (MHCII+, CD4+, CD8+, γδ+, CD45R+, IgA+, and IgG+), as well as in the evolution of the relative cytokine gene expression. From a functional point of view, negative associations were observed between the number of most of the immune cells (CD4, IgA, IgG, and CD45R cells) and parameters that could be related to the fecundity of worms, a phenomenon that was especially evident when the number of IgG and CD45R cells or the specific IgA levels of the gastric mucus were compared with parasitological parameters such as the female worm length or fecal egg counts at 8 wpi.
Collapse
Affiliation(s)
- Leire Ortega
- Parasitology Unit. Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain
| | - Jessica Quesada
- Parasitology Unit. Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain
| | - Antonio Ruiz
- Parasitology Unit. Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain
| | - María Magnolia Conde-Felipe
- Parasitology Unit. Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain
| | - Otilia Ferrer
- Parasitology Unit. Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain
| | - Francisco Rodríguez
- Department of Anatomy and Compared Anatomy Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain
| | - José Manuel Molina
- Parasitology Unit. Department of Animal Pathology, Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Gran Canaria, Spain.
| |
Collapse
|
21
|
Springer A, von Holtum C, von Samson-Himmelstjerna G, Strube C. Immunization Trials with Recombinant Major Sperm Protein of the Bovine Lungworm Dictyocaulus viviparus. Pathogens 2022; 11:pathogens11010055. [PMID: 35056003 PMCID: PMC8779484 DOI: 10.3390/pathogens11010055] [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: 12/07/2021] [Revised: 12/22/2021] [Accepted: 12/27/2021] [Indexed: 02/01/2023] Open
Abstract
The lungworm Dictyocaulus viviparus is one of the most economically important bovine parasites in temperate climate regions. Following infection, D. viviparus induces a temporary protective immunity, and a vaccine based on attenuated, infective larvae is commercially available. However, due to several disadvantages of the live vaccine, the development of a recombinant subunit vaccine is highly desirable. Therefore, the major sperm protein (MSP), which is essential for the parasite’s reproduction, was tested as a recombinantly Escherichia coli-expressed glutathione-S-transferase (GST)-fused vaccine antigen in immunization trials with two different adjuvants, Quil A and Al(OH)3. Calves (N = 4 per group) were immunized on study day (SD) 0, 21 and 42 and given a challenge infection on SD 63–65. The two control groups received only the respective adjuvant. Based on geometric means (GM), a 53.64% reduction in larvae per female worm was observed in the rMSP Quil A group vs. its control group (arithmetic means (AM): 54.43%), but this difference was not statistically significant. In the rMSP Al(OH)3 group, the mean number of larvae per female worm was even higher than in the respective control group (GM: 9.24%, AM: 14.14%). Furthermore, male and female worm burdens and the absolute number of larvae did not differ significantly, while the Al(OH)3 control group harbored significantly longer worms than the vaccinated group. Vaccinated animals showed a rise in rMSP-specific antibodies, particularly IgG and its subclass IgG1, and the native protein was detected by immunoblots. Although rMSP alone did not lead to significantly reduced worm fecundity, it might still prove useful as part of a multi-component vaccine.
Collapse
|
22
|
A journey through 50 years of research relevant to the control of gastrointestinal nematodes in ruminant livestock and thoughts on future directions. Int J Parasitol 2021; 51:1133-1151. [PMID: 34774857 DOI: 10.1016/j.ijpara.2021.10.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 11/20/2022]
Abstract
This review article provides an historical perspective on some of the major research advances of relevance to ruminant livestock gastrointestinal nematode control over the last 50 years. Over this period, gastrointestinal nematode control has been dominated by the use of broad-spectrum anthelmintic drugs. Whilst this has provided unprecedented levels of successful control for many years, this approach has been gradually breaking down for more than two decades and is increasingly unsustainable which is due, at least in part, to the emergence of anthelmintic drug resistance and a number of other factors discussed in this article. We first cover the remarkable success story of the discovery and development of broad-spectrum anthelmintic drugs, the changing face of anthelmintic drug discovery research and the emergence of anthelmintic resistance. This is followed by a review of some of the major advances in the increasingly important area of non-pharmaceutical gastrointestinal nematode control including immunology and vaccine development, epidemiological modelling and some of the alternative control strategies such as breeding for host resistance, refugia-based methods and biological control. The last 50 years have witnessed remarkable innovation and success in research aiming to improve ruminant livestock gastrointestinal nematode control, particularly given the relatively small size of the research community and limited funding. In spite of this, the growing global demand for livestock products, together with the need to maximise production efficiencies, reduce environmental impacts and safeguard animal welfare - as well as specific challenges such as anthelmintic drug resistance and climate change- mean that gastrointestinal nematode researchers will need to be as innovative in the next 50 years as in the last.
Collapse
|
23
|
Abstract
INTRODUCTION : Human infections with helminth worm parasites are extraordinarily prevalent across tropical and subtropical parts of the world, and control relies primarily on drugs that offer short-term suppression of infection. There is an urgent need for new vaccines that would confer long-lived immunity, protecting children in particular and minimizing community transmission. AREAS COVERED : This article discusses the development of helminth vaccines, from the first successful veterinary vaccines that demonstrated the feasibility of inducing protective immunity to helminths, to more recent initiatives to test human helminth antigens. The field has focussed primarily on evaluating individual antigens that could constitute targets amenable to antibody attack to inhibit parasite establishment. In a new direction, vaccines employing extracellular vesicles released by helminths have also given exciting results. EXPERT OPINION : Taking into account the complex life cycles and sophisticated immune evasion strategies of many helminths, a combination of antigens and approaches designed to target essential functional pathways of the parasite will be required to achieve a high level of protection in future anti-helminth vaccines.
Collapse
Affiliation(s)
- Rick M. Maizels
- Wellcome Centre for Integrative Parasitology; Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK,CONTACT Rick M. Maizels Wellcome Centre for Integrative Parasitology; Institute of Infection, Immunity and Inflammation, University of Glasgow, 120 University Place, GlasgowG12 8TA, UK
| |
Collapse
|
24
|
Aliabadi J, Rakhshandehroo E, Yektaseresht A. Development and evaluation of an indirect ELISA for detection of Teladorsagia circumcincta infection in sheep. BMC Vet Res 2021; 17:326. [PMID: 34641866 PMCID: PMC8510574 DOI: 10.1186/s12917-021-03042-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 10/05/2021] [Indexed: 12/22/2022] Open
Abstract
Background The gastrointestinal helminth, Teladorsagia circumcincta, is one of the major health risks and production-limiting diseases in small ruminant populations, particularly in temperate regions. With the increasing importance of disease management and recruited anthelmintic resistant types, accurate approaches are needed for the diagnosis of the infection in the host. Due to uncertain results using faecal examinations, the ELISA method was indicated for the detection of nematode antigenic materials. Despite some promising results, problems were described in terms of test specificity and cross-reactions. Therefore, this study aimed to evaluate the IgG response to worm somatic and excretory/secretory (ES) products using western blot analysis and an indirect ELISA for the detection of T. circumcincta infection in sheep. Results Based on the immuno-reactivity analysis, immunogenic fractions with molecular weights (MWs) of approximately 60, 75 and 100 kDa were detected in somatic content and two antigens of about 63 and 75 kDa in ES material. Accordingly, a specific product at 75 kDa had the strongest reaction and appeared as the most common antigenic protein. In ELISA, all the sera from the infected sheep revealed the OD rates above the calculated cut-off value with about two-fold greater average. Negative control samples were also specifically recognized with the mean OD rate of about 1/3 of the estimated cut-off value. The cross-reaction test, using rabbit anti-T. circumcincta IgG, did not show reactivity with the ES antigens of other prevalent nematodes including Haemonchus contortus, Protostrongylus rufescens and Marshallagia marshalli. In contrast, a strong positive reaction was observed with the somatic antigens of M. marshalli. Conclusions The results of this study indicated that the indirect ELISA method using the ES content enables distinguishing the T. circumcincta infected sheep with high specificity. Those antigenic ES peptides with 63 and particularly 75 kDa MWs should be further investigated due to the potential for serological diagnostic methods and immunoprotective targets in the host. Supplementary Information The online version contains supplementary material available at 10.1186/s12917-021-03042-1.
Collapse
Affiliation(s)
- Jalal Aliabadi
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, P.O. Box 71441-69155, Shiraz, Iran
| | - Ehsan Rakhshandehroo
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, P.O. Box 71441-69155, Shiraz, Iran.
| | - Azadeh Yektaseresht
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, P.O. Box 71441-69155, Shiraz, Iran
| |
Collapse
|
25
|
Lu M, Tian X, Wang W, Zhang Y, Aimulajiang K, Tian AL, Li C, Yan R, Xu L, Song X, Li X. The excretory-secretory antigen HcADRM1 to generate protective immunity against Haemonchus contortus. Parasitology 2021; 148:1497-1508. [PMID: 34193327 PMCID: PMC11010155 DOI: 10.1017/s0031182021001141] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/02/2021] [Accepted: 06/23/2021] [Indexed: 11/06/2022]
Abstract
The prevention, treatment and control of Haemonchus contortus have been increasingly problematic due to its widespread occurrence and anthelmintic resistance. There are very few descriptions of recombinant antigens being protective for H. contortus, despite the success of various native antigen preparations, including Barbervax. We recently identified an H. contortus excretory–secretory antigen, H. contortus adhesion-regulating molecule 1 (HcADRM1), that served as an immunomodulator to impair host T-cell functions. Given the prophylactic potential of HcADRM1 protein as a vaccine candidate, we hereby assessed the efficacies of HcADRM1 preparations against H. contortus infection. Parasitological and immunological parameters were evaluated throughout all time points of the trials, including fecal egg counts (FEC), abomasal worm burdens, complete blood counts, cytokine production profiles and antibody responses. Active vaccination with recombinant HcADRM1 (rHcADRM1) protein induced protective immunity in inoculated goats, resulting in reductions of 48.9 and 58.6% in cumulative FEC and worm burdens. Simultaneously, passive administration of anti-HcADRM1 antibodies generated encouraging levels of protection with 46.7 and 56.2% reductions in cumulative FEC and worm burdens in challenged goats. In addition, HcADRM1 preparations-immunized goats showed significant differences in mucosal and serum antigen-specific immunoglobulin G (IgG) levels, total mucosal IgA levels, haemoglobin values and circulating interferon-γ, interleukin (IL)-4 and IL-17A production compared to control goats in both trials. The preliminary data of these laboratory trials validated the immunoprophylactic effects of rHcADRM1 protein. It can be pursued as a potential vaccine antigen to develop an effective recombinant subunit vaccine against H. contortus under field conditions.
Collapse
Affiliation(s)
- Mingmin Lu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu210095, P. R. China
| | - Xiaowei Tian
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu210095, P. R. China
| | - Wenjuan Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu210095, P. R. China
| | - Yang Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu210095, P. R. China
| | - Kalibixiati Aimulajiang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu210095, P. R. China
| | - Ai-Ling Tian
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province730046, P. R. China
| | - Charles Li
- U.S. Department of Agriculture, Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, Beltsville, MD20705, USA
| | - Ruofeng Yan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu210095, P. R. China
| | - Lixin Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu210095, P. R. China
| | - Xiaokai Song
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu210095, P. R. China
| | - Xiangrui Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu210095, P. R. China
| |
Collapse
|
26
|
Maza-Lopez J, Contreras-Ochoa CO, Reyes-Guerrero DE, Encarnación-Guevara S, Hernández-Ortíz M, Olmedo-Juárez A, López-Arellano ME. Analysis of the immunomodulatory activity of excreted and secreted products from Haemonchus placei transition infective larvae (xL 3). Vet Parasitol 2021; 298:109512. [PMID: 34271321 DOI: 10.1016/j.vetpar.2021.109512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 06/24/2021] [Accepted: 06/26/2021] [Indexed: 11/24/2022]
Abstract
The excretory/secretory (E/S) products released by infective transitory larvae (xL3) of Haemonchus placei have an important biological function in stimulating immune mechanisms during the invasive process. Our objective was to analyse the modulatory activity of 15 and 70 kDa E/S products from H. placei xL3. Both E/S products were collected from xL3in vitro cultures at 24 and 72 h. Proteins were confirmed by SDS-PAGE, and the corresponding spots were elicited by gel isoelectrofocusing (IEF) and characterised by mass spectrometry. Additionally, flow cytometry of CD4+/γδ+ T cells and immune gene expression were performed by proliferation assays using each E/S product to stimulate lymphocyte and peripheral blood mononuclear cells (PBMCs) from non-infected calves. The IEF results displayed two spots of 7.0 and 5.7 pI for the 15 and 70 kDa products, respectively. Additionally, 29 and 17 peptides from the 15 and 70 kDa E/S products, respectively, were identified with the hypothetical neurotransmitter and enzymatic functions necessary for larval development. The relative expression displayed upregulation of IL4, 5, 6, 8, 10, 13, IFNγ, and FCεR1A genes (from 2.0- to 17.6-fold, p < 0.05) stimulated by the 15 and 70 kDa proteins, indicating specific genes against haemonchosis. Although the percentage of median florescence intensity (MFI%) of CD4+/γδ+ T cells did not change for both E/S products compared to the negative control and concanavalin-A stimulated cells as the positive control (p > 0.05), the 15-kDa protein reduced the levels of both T cells, and the 70-kDa proteins increased the γδ+ cells slightly. Additionally, there was increased PBMCs proliferation by the 70 kDa proteins (p < 0.05), denoting the biological role of other immune cells. The 15 and 70 kDa protein E/S products from H. placei xL3 showed modulation of the immune response, and although more studies are required, they indicate important functions in the host/parasite interaction.
Collapse
Affiliation(s)
- Jocelyn Maza-Lopez
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad#1001, Col. Chamilpa, Cuernavaca, Mor., C.P. 62209, Mexico
| | - Carla O Contreras-Ochoa
- Centro de Investigación sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Av. Universidad#655, Col. Santa María Ahuacatitlán, Cuernavaca, Mor., C.P. 62100, Mexico
| | - David E Reyes-Guerrero
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias. Carr. Fed. Cuernavaca-Cuautla#8534, Jiutepec, Mor., C.P. 62550, Mexico
| | - Sergio Encarnación-Guevara
- Centro de Ciencias Genómicas. Universidad Nacional Autónoma de México, Campus Morelos, Av. Universidad s/n Co. Chamilpa 62210, Cuernavaca, Mor., C.P. 62100, Mexico
| | - Magdalena Hernández-Ortíz
- Centro de Ciencias Genómicas. Universidad Nacional Autónoma de México, Campus Morelos, Av. Universidad s/n Co. Chamilpa 62210, Cuernavaca, Mor., C.P. 62100, Mexico
| | - Agustín Olmedo-Juárez
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias. Carr. Fed. Cuernavaca-Cuautla#8534, Jiutepec, Mor., C.P. 62550, Mexico
| | - Ma Eugenia López-Arellano
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias. Carr. Fed. Cuernavaca-Cuautla#8534, Jiutepec, Mor., C.P. 62550, Mexico.
| |
Collapse
|
27
|
Machín C, Corripio-Miyar Y, Hernández JN, Pérez-Hernández T, Hayward AD, Wright HW, Price DRG, Matthews JB, McNeilly TN, Nisbet AJ, González JF. Cellular and humoral immune responses associated with protection in sheep vaccinated against Teladorsagia circumcincta. Vet Res 2021; 52:89. [PMID: 34134748 PMCID: PMC8207578 DOI: 10.1186/s13567-021-00960-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 05/20/2021] [Indexed: 11/13/2022] Open
Abstract
Due to increased anthelmintic resistance, complementary methods to drugs are necessary to control gastrointestinal nematodes (GIN). Vaccines are an environmentally-friendly and promising option. In a previous study, a Teladorsagia circumcincta recombinant sub-unit vaccine was administered to two sheep breeds with different levels of resistance against GIN. In the susceptible Canaria Sheep (CS) breed, vaccinates harboured smaller worms with fewer eggs in utero than the control group. Here, we extend this work, by investigating the cellular and humoral immune responses of these two sheep breeds following vaccination and experimental infection with T. circumcincta. In the vaccinated CS group, negative associations between antigen-specific IgA, IgG2 and Globule Leukocytes (GLs) with several parasitological parameters were established as well as a higher CD4+/CD8+ ratio than in control CS animals, suggesting a key role in the protection induced by the vaccine. In the more resistant Canaria Hair Breed (CHB) sheep the vaccine did not significantly impact on the parasitological parameters studied and none of these humoral associations were observed in vaccinated CHB lambs, although CHB had higher proportions of CD4+ and CD8+ T cells within the abomasal lymph nodes, suggesting higher mucosal T cell activation. Each of the component proteins in the vaccine induced an increase in immunoglobulin levels in vaccinated groups of each breed. However, levels of immunoglobulins to only three of the antigens (Tci-MEP-1, Tci-SAA-1, Tci-ASP-1) were negatively correlated with parasitological parameters in the CS breed and they may be, at least partially, responsible for the protective effect of the vaccine in this breed. These data could be useful for improving the current vaccine prototype.
Collapse
Affiliation(s)
- Cynthia Machín
- Facultad de Veterinaria, Instituto Universitario Sanidad Animal y Seguridad Alimentaria, Universidad de Las Palmas de Gran Canaria, Arucas, Spain
| | | | - Julia N Hernández
- Facultad de Veterinaria, Instituto Universitario Sanidad Animal y Seguridad Alimentaria, Universidad de Las Palmas de Gran Canaria, Arucas, Spain.
| | - Tara Pérez-Hernández
- Facultad de Veterinaria, Instituto Universitario Sanidad Animal y Seguridad Alimentaria, Universidad de Las Palmas de Gran Canaria, Arucas, Spain
| | | | | | | | | | | | | | - Jorge F González
- Facultad de Veterinaria, Instituto Universitario Sanidad Animal y Seguridad Alimentaria, Universidad de Las Palmas de Gran Canaria, Arucas, Spain
| |
Collapse
|
28
|
Pearson MS, Tedla BA, Becker L, Nakajima R, Jasinskas A, Mduluza T, Mutapi F, Oeuvray C, Greco B, Sotillo J, Felgner PL, Loukas A. Immunomics-Guided Antigen Discovery for Praziquantel-Induced Vaccination in Urogenital Human Schistosomiasis. Front Immunol 2021; 12:663041. [PMID: 34113343 PMCID: PMC8186320 DOI: 10.3389/fimmu.2021.663041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 04/22/2021] [Indexed: 12/25/2022] Open
Abstract
Despite the enormous morbidity attributed to schistosomiasis, there is still no vaccine to combat the disease for the hundreds of millions of infected people. The anthelmintic drug, praziquantel, is the mainstay treatment option, although its molecular mechanism of action remains poorly defined. Praziquantel treatment damages the outermost surface of the parasite, the tegument, liberating surface antigens from dying worms that invoke a robust immune response which in some subjects results in immunologic resistance to reinfection. Herein we term this phenomenon Drug-Induced Vaccination (DIV). To identify the antigenic targets of DIV antibodies in urogenital schistosomiasis, we constructed a recombinant proteome array consisting of approximately 1,000 proteins informed by various secretome datasets including validated proteomes and bioinformatic predictions. Arrays were screened with sera from human subjects treated with praziquantel and shown 18 months later to be either reinfected (chronically infected subjects, CI) or resistant to reinfection (DIV). IgG responses to numerous antigens were significantly elevated in DIV compared to CI subjects, and indeed IgG responses to some antigens were completely undetectable in CI subjects but robustly recognized by DIV subjects. One antigen in particular, a cystatin cysteine protease inhibitor stood out as a unique target of DIV IgG, so recombinant cystatin was produced, and its vaccine efficacy assessed in a heterologous Schistosoma mansoni mouse challenge model. While there was no significant impact of vaccination with adjuvanted cystatin on adult worm numbers, highly significant reductions in liver egg burdens (45-55%, P<0.0001) and intestinal egg burdens (50-54%, P<0.0003) were achieved in mice vaccinated with cystatin in two independent trials. This study has revealed numerous antigens that are targets of DIV antibodies in urogenital schistosomiasis and offer promise as subunit vaccine targets for a drug-linked vaccination approach to controlling schistosomiasis.
Collapse
Affiliation(s)
- Mark S. Pearson
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
| | - Bemnet A. Tedla
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
| | - Luke Becker
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
| | - Rie Nakajima
- Vaccine Research and Development Center, Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, United States
| | - Al Jasinskas
- Vaccine Research and Development Center, Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, United States
| | - Takafira Mduluza
- Department of Biotechnology and Biochemistry, University of Zimbabwe, Harare, Zimbabwe
- TIBA Partnership, NIHR Global Health Research Unit Tackling Infections to Benefit Africa (TIBA) at the University of Edinburgh based in Harare (TIBA Zimbabwe), Harare, Zimbabwe
| | - Francisca Mutapi
- Institute of Immunology and infection Research, Ashworth Laboratories, Edinburgh, United Kingdom
- TIBA Partnership, NIHR Global Health Research Unit Tackling Infections to Benefit Africa (TIBA) at the University of Edinburgh, Edinburgh, United Kingdom
| | - Claude Oeuvray
- TIBA Partnership, NIHR Global Health Research Unit Tackling Infections to Benefit Africa (TIBA) at the University of Edinburgh, Edinburgh, United Kingdom
| | - Beatrice Greco
- Global Health Institute of Merck, Ares Trading S.A., a subsidiary of Merck KGaA (Darmstadt, Germany), Eysins, Switzerland
| | - Javier Sotillo
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
- Parasitology Reference and Research Laboratory, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Philip L. Felgner
- Vaccine Research and Development Center, Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, United States
| | - Alex Loukas
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
| |
Collapse
|
29
|
Rooney J, Cortés A, Scotti R, Price DRG, Bartley Y, Fairlie-Clarke K, McNeilly TN, Nisbet AJ, Cantacessi C. Vaccination against the brown stomach worm, Teladorsagia circumcincta, followed by parasite challenge, induces inconsistent modifications in gut microbiota composition of lambs. Parasit Vectors 2021; 14:189. [PMID: 33823914 PMCID: PMC8025363 DOI: 10.1186/s13071-021-04688-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 03/16/2021] [Indexed: 01/04/2023] Open
Abstract
Background Growing evidence points towards a role of gastrointestinal (GI) helminth parasites of ruminants in modifying the composition of the host gut flora, with likely repercussions on the pathophysiology of worm infection and disease, and on animal growth and productivity. However, a thorough understanding of the mechanisms governing helminth-microbiota interactions and of their impact on host health and welfare relies on reproducibility and replicability of findings. To this aim, in this study, we analysed quantitative and qualitative fluctuations in the faecal microbiota composition of lambs vaccinated against, and experimentally infected with, the parasitic GI nematode Teladorsagia circumcincta over the course of two separate trials performed over two consecutive years. Methods Two trials were conducted under similar experimental conditions in 2017 and 2018, respectively. In each trial, lambs were randomly assigned to one of the following experimental groups: (i) vaccinated/infected, (ii) unvaccinated/infected and (iii) unvaccinated/uninfected. Faecal samples collected from individual animals were subjected to DNA extraction followed by high-throughput sequencing of the V3-V4 region of the bacterial 16S rRNA gene and bioinformatics and biostatistical analyses of sequence data. Results Substantial differences in the populations of bacteria affected by immunisation against and infection by T. circumcincta were detected when comparing data from the two trials. Nevertheless, the abundance of Prevotella spp. was significantly linked to helminth infection in both trials. Conclusions Despite the largely conflicting findings between the two trials, our data revealed that selected gut microbial populations are consistently affected by T. circumcincta infection and/or vaccination. Nevertheless, our study calls for caution when interpreting data generated from in vivo helminth-microbiome interaction studies that may be influenced by several intrinsic and extrinsic host-, parasite- and environment-related factors.![]() Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04688-4.
Collapse
Affiliation(s)
- James Rooney
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Alba Cortés
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK.,Departament de Farmàcia I Tecnologia Farmacèutica I Parasitologia, Facultat de Farmàcia, Universitat de València, Valencia, Spain
| | - Riccardo Scotti
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Daniel R G Price
- Vaccines and Diagnostics Department, Moredun Research Institute, Edinburgh, UK
| | - Yvonne Bartley
- Vaccines and Diagnostics Department, Moredun Research Institute, Edinburgh, UK
| | | | - Tom N McNeilly
- Disease Control Department, Moredun Research Institute, Edinburgh, UK
| | - Alasdair J Nisbet
- Vaccines and Diagnostics Department, Moredun Research Institute, Edinburgh, UK
| | - Cinzia Cantacessi
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK.
| |
Collapse
|
30
|
Zafra R, Buffoni L, Pérez-Caballero R, Molina-Hernández V, Ruiz-Campillo MT, Pérez J, Martínez-Moreno Á, Martínez Moreno FJ. Efficacy of a multivalent vaccine against Fasciola hepatica infection in sheep. Vet Res 2021; 52:13. [PMID: 33509286 PMCID: PMC7841919 DOI: 10.1186/s13567-021-00895-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 01/11/2021] [Indexed: 12/14/2022] Open
Abstract
In this work we report the protection found in a vaccination trial performed in sheep with two different vaccines composed each one by a cocktail of antigens (rCL1, rPrx, rHDM and rLAP) formulated in two different adjuvants (Montanide ISA 61 VG (G1) and Alhydrogel®(G2)). The parameters of protection tested were fluke burden, faecal egg count and evaluation of hepatic lesions. In vaccinated group 1 we found a significant decrease in fluke burden in comparison to both unimmunised and infected control group (37.2%; p = 0.002) and to vaccinated group 2 (Alhydrogel®) (27.08%; p = 0.016). The lower fluke burden found in G1 was accompanied by a decrease in egg output of 28.71% in comparison with the infected control group. Additionally, gross hepatic lesions found in vaccine 1 group showed a significant decrease (p = 0.03) in comparison with unimmunised-infected group. The serological study showed the highest level for both IgG1 and IgG2 in animals from group 1. All these data support the hypothesis of protection found in vaccine 1 group.
Collapse
Affiliation(s)
- Rafael Zafra
- Animal Health Department (Parasitology and Parasitic Diseases), Faculty of Veterinary Medicine, University of Córdoba, Sanidad Animal Building, Rabanales Campus, Córdoba, Spain
| | - Leandro Buffoni
- Animal Health Department (Parasitology and Parasitic Diseases), Faculty of Veterinary Medicine, University of Córdoba, Sanidad Animal Building, Rabanales Campus, Córdoba, Spain.
| | - Raúl Pérez-Caballero
- Animal Health Department (Parasitology and Parasitic Diseases), Faculty of Veterinary Medicine, University of Córdoba, Sanidad Animal Building, Rabanales Campus, Córdoba, Spain
| | - Verónica Molina-Hernández
- Department of Anatomy, Comparative Pathology and Toxicology, Faculty of Veterinary Medicine, University of Córdoba, Sanidad Animal Building, Rabanales Campus, Córdoba, Spain
| | - María T Ruiz-Campillo
- Department of Anatomy, Comparative Pathology and Toxicology, Faculty of Veterinary Medicine, University of Córdoba, Sanidad Animal Building, Rabanales Campus, Córdoba, Spain
| | - José Pérez
- Department of Anatomy, Comparative Pathology and Toxicology, Faculty of Veterinary Medicine, University of Córdoba, Sanidad Animal Building, Rabanales Campus, Córdoba, Spain
| | - Álvaro Martínez-Moreno
- Animal Health Department (Parasitology and Parasitic Diseases), Faculty of Veterinary Medicine, University of Córdoba, Sanidad Animal Building, Rabanales Campus, Córdoba, Spain
| | - Francisco J Martínez Moreno
- Animal Health Department (Parasitology and Parasitic Diseases), Faculty of Veterinary Medicine, University of Córdoba, Sanidad Animal Building, Rabanales Campus, Córdoba, Spain
| |
Collapse
|
31
|
Lu M, Tian X, Zhang Y, Wang W, Tian AL, Aimulajiang K, Liu L, Li C, Yan R, Xu L, Song X, Li X. Protection studies of an excretory-secretory protein HcABHD against Haemonchus contortus infection. Vet Res 2021; 52:3. [PMID: 33407892 PMCID: PMC7786147 DOI: 10.1186/s13567-020-00871-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 11/19/2020] [Indexed: 01/15/2023] Open
Abstract
Unlike the successful immunization of native H. contortus antigens that contributed to the realization of the first commercial vaccine Barbervax, not many studies revealed the encouraging protective efficacies of recombinant H. contortus antigens in laboratory trials or under field conditions. In our preliminary study, H. contortus α/β-hydrolase domain protein (HcABHD) was demonstrated to be an immunomodulatory excretory-secretory (ES) protein that interacts with goat T cells. We herein evaluated the protective capacities of two HcABHD preparations, recombinant HcABHD (rHcABHD) antigen and anti-rHcABHD IgG, against H. contortus challenge via active and passive immunization trials, respectively. Parasitological parameter, antibody responses, hematological pathology and cytokine profiling in unchallenged and challenged goats were monitored and determined throughout both trials. Subcutaneous administration of rHcABHD with Freund adjuvants elicited protective immune responses in challenged goats, diminishing cumulative fecal egg counts (FEC) and total worm burden by 54.0% and 74.2%, respectively, whereas passive immunization with anti-rHcABHD IgG conferred substantial protection to challenged goats by generating a 51.5% reduction of cumulative FEC and a 73.8% reduction of total worm burden. Additionally, comparable changes of mucosal IgA levels, circulating IgG levels, hemoglobin levels, and serum interleukin (IL)-4 and IL-17A levels were observed in rHcABHD protein/anti-rHcABHD IgG immunized goats in both trials. Taken together, the recombinant version of HcABHD might have further application under field conditions in protecting goats against H. contortus infection, and the integrated immunological pipeline of ES antigen identification, screening and characterization may provide new clues for further development of recombinant subunit vaccines to control H. contortus.
Collapse
Affiliation(s)
- Mingmin Lu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China
| | - Xiaowei Tian
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China
| | - Yang Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China
| | - Wenjuan Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China
| | - Ai-Ling Tian
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, Gansu, P. R. China
| | - Kalibixiati Aimulajiang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China
| | - Lianrui Liu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China
| | - Charles Li
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD, 20705, USA
| | - Ruofeng Yan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China
| | - Lixin Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China
| | - Xiaokai Song
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China
| | - Xiangrui Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, P. R. China.
| |
Collapse
|
32
|
Sloan S, Jenvey C, Cairns C, Stear M. Cathepsin F of Teladorsagia circumcincta is a recently evolved cysteine protease. Evol Bioinform Online 2020; 16:1176934320962521. [PMID: 33100828 PMCID: PMC7549167 DOI: 10.1177/1176934320962521] [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: 08/12/2020] [Accepted: 09/02/2020] [Indexed: 11/30/2022] Open
Abstract
Parasitic cysteine proteases are involved in parasite stage transition, invasion
of host tissues, nutrient uptake, and immune evasion. The cysteine protease
cathepsin F is the most abundant protein produced by fourth-stage larvae (L4) of
the nematode Teladorsagia circumcincta, while its transcript is
only detectable in L4 and adults. T. circumcincta cathepsin F
is a recently evolved cysteine protease that does not fall clearly into either
of the cathepsin L or F subfamilies. This protein exhibits characteristics of
both cathepsins F and L, and its phylogenetic relationship to its closest
homologs is distant, including proteins of closely related nematodes of the same
subfamily.
Collapse
Affiliation(s)
- Sarah Sloan
- AgriBio Centre for AgriBioscience, Department of Animal, Plant and Soil Sciences, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia
| | - Caitlin Jenvey
- AgriBio Centre for AgriBioscience, Department of Animal, Plant and Soil Sciences, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia
| | - Callum Cairns
- AgriBio Centre for AgriBioscience, Department of Animal, Plant and Soil Sciences, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia
| | - Michael Stear
- AgriBio Centre for AgriBioscience, Department of Animal, Plant and Soil Sciences, School of Life Sciences, La Trobe University, Bundoora, Victoria, Australia
| |
Collapse
|
33
|
Correlation of salivary antibody to carbohydrate larval antigen (CarLA) with health and gastrointestinal nematode parasitism in sheep under Ontario grazing conditions. Vet Parasitol 2020; 283:109183. [PMID: 32679510 DOI: 10.1016/j.vetpar.2020.109183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/02/2020] [Accepted: 07/04/2020] [Indexed: 11/20/2022]
Abstract
Leveraging mucosal immunity is a promising method for controlling gastrointestinal nematode (GIN) parasitism in sheep. Salivary antibody to carbohydrate larval antigen (sCarLA), a heritable measure of immunity to third-stage GIN larvae (L3), has been successfully applied to genetic improvement programs in New Zealand. However, sCarLA levels wane in the absence of ongoing GIN exposure. New Zealand's temperate climate permits year-round exposure to L3, but cold winters in boreal regions such as Ontario, Canada interrupt exposure for five months or more. This study investigated associations between sCarLA levels, GIN parasitism, and indicators of overall health in sheep grazing under Ontario conditions. A commercial flock of 140 Rideau cross ewe lambs were followed from approximately 30 days of age in May 2016 until November 2017, including lambing and lactation in the spring of 2017. Every 6-8 weeks during the grazing season and at mid-gestation in March 2017, fecal egg counts were performed, blood collected to assess serum albumin, globulin, and hematocrit, and pasture samples obtained to confirm exposure to infective larvae. Measurements of sCarLA level were performed at the beginning, middle, and end of each grazing season, and at mid-gestation. Spearman's rank correlation coefficients were calculated to compare sCarLA levels over time, and general linear mixed models created to evaluate associations between sCarLA levels, GIN fecal egg count, hematocrit, serum albumin, and serum globulin. Levels of sCarLA followed a similar seasonal pattern to GIN fecal egg counts with a 6-8 week delay; much higher sCarLA levels were observed in the second grazing season. The proportion of the flock with detectable sCarLA (≥ 0.3 units/mL) was 68.3 % by the end of the first grazing season, declined over winter to 43.9 % at lambing, and approached 100 % after 3 months of grazing in the second grazing season. Correlations between sCarLA levels over time were consistently positive, of weak to moderate strength, and significant (p < 0.05). At all time points, sCarLA level was significantly (p < 0.001) and negatively associated with fecal egg counts. The flock displayed minimal variability in hematocrit, serum albumin, and serum globulin; none of which were significantly associated with sCarLA levels. These results suggest that sCarLA can be maintained over winter and is a useful measure of immunity to GINs in sheep under Ontario grazing conditions.
Collapse
|
34
|
The potential for vaccines against scour worms of small ruminants. Int J Parasitol 2020; 50:533-553. [PMID: 32569640 DOI: 10.1016/j.ijpara.2020.04.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 04/01/2020] [Accepted: 04/03/2020] [Indexed: 02/08/2023]
Abstract
This review addresses the research landscape regarding vaccines against scour worms, particularly Trichostrongylus spp. and Teladorsagia circumcincta. The inability of past research to deliver scour-worm vaccines with reliable and reproducible efficacy has been due in part to gaps in knowledge concerning: (i) host-parasite interactions leading to development of type-2 immunity, (ii) definition of an optimal suite of parasite antigens, and (iii) rational formulation and administration to induce protective immunity against gastrointestinal nematodes (GIN) at the site of infestation. Recent 'omics' developments enable more systematic analyses. GIN genomes are reaching completion, facilitating "reverse vaccinology" approaches that have been used successfully for the Rhipicephalus australis vaccine for cattle tick, while methods for gene silencing and editing in GIN enable identification and validation of potential vaccine antigens. We envisage that any efficacious scour worm vaccine(s) would be adopted similarly to "Barbervax™" within integrated parasite management schemes. Vaccines would therefore effectively parallel the use of resistant animals, and reduce the frequency of drenching and pasture contamination. These aspects of integration, efficacy and operation require updated models and validation in the field. The conclusion of this review outlines an approach to facilitate an integrated research program.
Collapse
|
35
|
Cortés A, Wills J, Su X, Hewitt RE, Robertson J, Scotti R, Price DRG, Bartley Y, McNeilly TN, Krause L, Powell JJ, Nisbet AJ, Cantacessi C. Infection with the sheep gastrointestinal nematode Teladorsagia circumcincta increases luminal pathobionts. MICROBIOME 2020; 8:60. [PMID: 32354347 PMCID: PMC7193420 DOI: 10.1186/s40168-020-00818-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 03/02/2020] [Indexed: 05/05/2023]
Abstract
BACKGROUND The multifaceted interactions between gastrointestinal (GI) helminth parasites, host gut microbiota and immune system are emerging as a key area of research within the field of host-parasite relationships. In spite of the plethora of data available on the impact that GI helminths exert on the composition of the gut microflora, whether alterations of microbial profiles are caused by direct parasite-bacteria interactions or, indirectly, by alterations of the GI environment (e.g. mucosal immunity) remains to be determined. Furthermore, no data is thus far available on the downstream roles that qualitative and quantitative changes in gut microbial composition play in the overall pathophysiology of parasite infection and disease. RESULTS In this study, we investigated the fluctuations in microbiota composition and local immune microenvironment of sheep vaccinated against, and experimentally infected with, the 'brown stomach worm' Teladorsagia circumcincta, a parasite of worldwide socio-economic significance. We compared the faecal microbial profiles of vaccinated and subsequently infected sheep with those obtained from groups of unvaccinated/infected and unvaccinated/uninfected animals. We show that alterations of gut microbial composition are associated mainly with parasite infection, and that this involves the expansion of populations of bacteria with known pro-inflammatory properties that may contribute to the immunopathology of helminth disease. Using novel quantitative approaches for the analysis of confocal microscopy-derived images, we also show that gastric tissue infiltration of T cells is driven by parasitic infection rather than anti-helminth vaccination. CONCLUSIONS Teladorsagia circumcincta infection leads to an expansion of potentially pro-inflammatory gut microbial species and abomasal T cells. This data paves the way for future experiments aimed to determine the contribution of the gut flora to the pathophysiology of parasitic disease, with the ultimate aim to design and develop novel treatment/control strategies focused on preventing and/or restricting bacterial-mediated inflammation upon infection by GI helminths. Video Abstract.
Collapse
Affiliation(s)
- Alba Cortés
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - John Wills
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - Xiaopei Su
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - Rachel E Hewitt
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - Jack Robertson
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - Riccardo Scotti
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - Daniel R G Price
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - Yvonne Bartley
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - Tom N McNeilly
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | | | - Jonathan J Powell
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - Alasdair J Nisbet
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - Cinzia Cantacessi
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK.
| |
Collapse
|
36
|
Claerebout E, Geldhof P. Helminth Vaccines in Ruminants: From Development to Application. Vet Clin North Am Food Anim Pract 2020; 36:159-171. [PMID: 32029181 PMCID: PMC7125739 DOI: 10.1016/j.cvfa.2019.10.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Edwin Claerebout
- Faculty of Veterinary Medicine, Laboratory of Parasitology, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium.
| | - Peter Geldhof
- Faculty of Veterinary Medicine, Laboratory of Parasitology, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium
| |
Collapse
|
37
|
Couto BPD, Corrêa LQ, de Sousa JEN, Goulart de Carvalho EF, Gonzaga HT, Costa-Cruz JM. Parasitological and immunological aspects of oral and subcutaneous prednisolone treatment in rats experimentally infected with Strongyloides venezuelensis. Acta Trop 2020; 204:105349. [PMID: 31958413 DOI: 10.1016/j.actatropica.2020.105349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 10/25/2022]
Abstract
Strongyloides venezuelensis is a model to study human strongyloidiasis, which infects wild rodents and shares common antigenic epitopes with Strongyloides stercoralis. This study aimed to evaluate parasitological and immunological parameters of prednisolone immunosuppression protocols in rats (Rattus novergicus) infected with S. venezuelensis. Rats were divided into six groups (n = 36): untreated and uninfected (-) or infected (+); oral treatment and uninfected (o-) or infected (o+); subcutaneous treatment and uninfected (sc-) or infected (sc+). For oral immunosuppression, 5 mg/mL of water diluted prednisolone were given five days before infection, and in the days 8 and 21 (for 5 days). For subcutaneous immunosuppression, 10 mg/kg of prednisolone were given daily. The infection was established by the subcutaneous injection of approximately 3,000 S. venezuelensis filarioid larvae per animal. All animals from the (+) and (o+) groups survived, while four rats from the (sc+) died prior to necropsy date. Parasitological analysis showed higher egg elimination in (o+) in comparison to (+) and (sc+) on 7, 13 and 26 days post infection (d.p.i.).The recovery of parasitic females at day 30 was significantly higher in (o+), compared to (+). The (+) and (o+) groups showed a clear increase in anti-S. venezuelensis IgG, IgG1 and IgG2 from 13th d.p.i. Oral immunosuppression led to a higher number of adult females and increased egg output while maintaining IgG and subclasses antibody levels comparable to the positive control.
Collapse
Affiliation(s)
- Bruna Patricia do Couto
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Amazonas s/n, bloco 4C, 38400-902 Uberlândia, Minas Gerais, Brasil
| | - Luísa Queiroz Corrêa
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Amazonas s/n, bloco 4C, 38400-902 Uberlândia, Minas Gerais, Brasil
| | - José Eduardo Neto de Sousa
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Amazonas s/n, bloco 4C, 38400-902 Uberlândia, Minas Gerais, Brasil
| | - Edson Fernando Goulart de Carvalho
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Amazonas s/n, bloco 4C, 38400-902 Uberlândia, Minas Gerais, Brasil
| | - Henrique Tomaz Gonzaga
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Amazonas s/n, bloco 4C, 38400-902 Uberlândia, Minas Gerais, Brasil
| | - Julia Maria Costa-Cruz
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Amazonas s/n, bloco 4C, 38400-902 Uberlândia, Minas Gerais, Brasil.
| |
Collapse
|
38
|
Immunization of Goats with Recombinant Protein 14-3-3 Isoform 2(rHcftt-2) Induced Moderate Protection against Haemonchus contortus Challenge. Pathogens 2020; 9:pathogens9010046. [PMID: 31935869 PMCID: PMC7168593 DOI: 10.3390/pathogens9010046] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/05/2020] [Accepted: 01/05/2020] [Indexed: 12/13/2022] Open
Abstract
A previous study identified that isoform 2 (Hcftt-2) of the 14-3-3 protein of Haemonchus contortus (H. contortus) could suppress immune functions of goat peripheral blood mononuclear cells (PBMCs) and might be a potential vaccine target, as neutralization of the protein function may enhance anti-parasite immunity. In this research, the recombinant Hcftt-2 was evaluated for its immunoprotective efficacy against H. contortus infection in goats. Five experimental goats were immunized twice with rHcftt-2 along with Freund’s adjuvant. The five immunized goats and five nonimmunized goats (adjuvant only) were challenged with 5000 L3-stage H. contortus larvae after 14 days of second immunization. Five nonimmunized and uninfected goats (adjuvant only) were set as the uninfected group. A significant increase in the serum immunoglobin G(IgG) and serum IgA levels were identified in the rHcftt-2 immunized animals. The mean eggs per gram in feces (EPG) and the worm burdens of rHcftt-2 immunized group were reduced by 26.46% (p < 0.05) and 32.33%, respectively. In brief, immunization of goats with rHcftt-2 induced moderate protection against H. contortus challenge.
Collapse
|
39
|
Rojas A, Baneth G. Secretome of the carcinogenic helminth Spirocerca lupi reveals specific parasite proteins associated with its different life stages. Vet Parasitol 2019; 275:108935. [PMID: 31704657 DOI: 10.1016/j.vetpar.2019.108935] [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: 07/09/2019] [Revised: 09/30/2019] [Accepted: 10/01/2019] [Indexed: 12/28/2022]
Abstract
Spirocerca lupi is a parasitic and carcinogenic nematode of canids distributed in tropical and subtropical regions around the world. The excretion-secretion proteins (PES) of S. lupi have been suggested to play a role in the pathogenesis of its infection. We aimed to identify the PES of different stages of S. lupi and search for proteins that would be useful for diagnostic, therapeutic and vaccination purposes as well as understand their functions. A nano-UPLC mass spectrometry de novo analysis was performed on proteins collected from cultures of S. lupi L3 larvae, L4 females, adult females and adult males from naturally infected hosts. A total of 211 proteins were identified in all cultures. Accordingly, 117, 130, 99 and 116 proteins were detected in L3 larva, L4 females, adult females and adult males, respectively, with a strong correlation in the biological replicates (Pearson coefficients > 0.73). Fourty-four proteins were detected in all developmental stages, 64 were stage-specific and 49 were exclusively identified in L4 females. Cell compartment enrichment analysis revealed that proteins common to all stages were cytoplasmatic (p < 9.x10-6), whereas L4 unique proteins were in collagen trimers, and macromolecular complexes (p < 0.00001). Functional enrichment analysis of proteins showed significant enrichment in lipid metabolism in L3-unique proteins (p<0.00005), in mannose metabolism and protein de-glycosylation for L4-unique proteins (p < 0.00004), and in phosphorus metabolism in proteins shared by all stages (p < 2.1 x10-9). Interestingly, annexin 6, associated with cancer in humans, was detected in all life stages, but in a larger abundance in L4 females and adults. These findings indicate that S. lupi establishes complex interactions with its hosts by an arsenal of proteins expressed in different patterns in each life stage which influence the pathogenesis and oncogenesis of S. lupi and may be used as potential targets for diagnostic assays, drug targets or vaccine candidates.
Collapse
Affiliation(s)
- Alicia Rojas
- Koret School of Veterinary Medicine, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel.
| | - Gad Baneth
- Koret School of Veterinary Medicine, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| |
Collapse
|
40
|
Price DRG, Nisbet AJ, Frew D, Bartley Y, Oliver EM, McLean K, Inglis NF, Watson E, Corripio-Miyar Y, McNeilly TN. Characterisation of a niche-specific excretory-secretory peroxiredoxin from the parasitic nematode Teladorsagia circumcincta. Parasit Vectors 2019; 12:339. [PMID: 31292008 PMCID: PMC6617597 DOI: 10.1186/s13071-019-3593-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/03/2019] [Indexed: 11/24/2022] Open
Abstract
Background The primary cause of parasitic gastroenteritis in small ruminants in temperate regions is the brown stomach worm, Teladorsagia circumcincta. Host immunity to this parasite is slow to develop, consistent with the ability of T. circumcincta to suppress the host immune response. Previous studies have shown that infective fourth-stage T. circumcincta larvae produce excretory–secretory products that are able to modulate the host immune response. The objective of this study was to identify immune modulatory excretory–secretory proteins from populations of fourth-stage T. circumcincta larvae present in two different host-niches: those associated with the gastric glands (mucosal-dwelling larvae) and those either loosely associated with the mucosa or free-living in the lumen (lumen-dwelling larvae). Results In this study excretory–secretory proteins from mucosal-dwelling and lumen-dwelling T. circumcincta fourth stage larvae were analysed using comparative 2-dimensional gel electrophoresis. A total of 17 proteins were identified as differentially expressed, with 14 proteins unique to, or enriched in, the excretory–secretory proteins of mucosal-dwelling larvae. One of the identified proteins, unique to mucosal-dwelling larvae, was a putative peroxiredoxin (T. circumcincta peroxiredoxin 1, Tci-Prx1). Peroxiredoxin orthologs from the trematode parasites Schistosoma mansoni and Fasciola hepatica have previously been shown to alternatively activate macrophages and play a key role in promoting parasite induced Th2 type immunity. Here we demonstrate that Tci-Prx1 is expressed in all infective T. circumcincta life-stages and, when produced as a recombinant protein, has peroxidase activity, whereby hydrogen peroxide (H2O2) is reduced and detoxified. Furthermore, we use an in vitro macrophage stimulation assay to demonstrate that, unlike peroxiredoxins from trematode parasites Schistosoma mansoni and Fasciola hepatica, Tci-Prx1 is unable to alternatively activate murine macrophage cells. Conclusions In this study, we identified differences in the excretory–secretory proteome of mucosal-dwelling and lumen-dwelling infective fourth-stage T. circumcincta larvae, and demonstrated the utility of this comparative proteomic approach to identify excretory–secretory proteins of potential importance for parasite survival and/or host immune modulation. Electronic supplementary material The online version of this article (10.1186/s13071-019-3593-6) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Daniel R G Price
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK.
| | - Alasdair J Nisbet
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - David Frew
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - Yvonne Bartley
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - E Margaret Oliver
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - Kevin McLean
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - Neil F Inglis
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | - Eleanor Watson
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| | | | - Tom N McNeilly
- Moredun Research Institute, Pentlands Science Park, Edinburgh, EH26 0PZ, UK
| |
Collapse
|
41
|
Impacts of breed type and vaccination on Teladorsagia circumcincta infection in native sheep in Gran Canaria. Vet Res 2019; 50:29. [PMID: 31029163 PMCID: PMC6486963 DOI: 10.1186/s13567-019-0646-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 03/22/2019] [Indexed: 11/30/2022] Open
Abstract
Vaccines and genetic resistance offer potential future alternatives to the exclusive use of anthelmintics to control gastrointestinal nematodes (GIN). Here, a Teladorsagia circumcincta prototype vaccine was administered to two sheep breeds which differ in their relative levels of resistance to infection with GIN. Vaccination of the more susceptible Canaria Sheep (CS) breed induced significant reductions in worm length and numbers of worm eggs in utero (EIU) when compared to control CS sheep. In the more resistant Canaria Hair Breed (CHB), although vaccination induced a reduction in all parasitological parameters analysed, differences between vaccinated and control sheep were not statistically significant. Such interactions between sheep breed and vaccination may allow better integrated control of GIN in future.
Collapse
|
42
|
Nisbet AJ, McNeilly TN, Price DRG, Oliver EM, Bartley Y, Mitchell M, Palarea-Albaladejo J, Matthews JB. The rational simplification of a recombinant cocktail vaccine to control the parasitic nematode Teladorsagia circumcincta. Int J Parasitol 2019; 49:257-265. [PMID: 30690091 PMCID: PMC6456928 DOI: 10.1016/j.ijpara.2018.10.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/23/2018] [Accepted: 10/28/2018] [Indexed: 01/05/2023]
Abstract
Using data from five independent vaccine trials, which employed a subunit cocktail vaccine containing eight recombinant proteins to protect sheep against Teladorsagia circumcincta, a strategy was developed to simplify antigen complexity of the vaccine. A meta-analysis of data from these five trials demonstrated statistically significant reductions in cumulative faecal egg count and worm burden in vaccinated sheep when compared with those which had received adjuvant only (P = 0.009 and P < 0.0001, respectively). Relationships between antigen-specific antibody levels, antibody avidity and parasitological parameters of efficacy were analysed for each of the eight proteins in these trials. Of these, the strongest correlations between percentage reduction in cumulative faecal egg count and avidity were obtained for the vaccine antigen T. circumcincta apyrase-1 (Tci-APY-1) in relation to either total antigen-specific IgG or IgG1 in sera (P = 0.019 and P = 0.030, respectively). In addition, IgG and IgA within the serum and abomasal mucus of control (parasite challenged) lambs strongly recognised Tci-APY-1 and T. circumcincta metalloproteinase-1 (Tci-MEP-1) but only weakly bound the other six antigens, indicating Tci-APY-1 and Tci-MEP-1 are most effectively recognised by the parasite-induced antibody response. On the basis of these findings, a two-protein vaccine comprising Tci-APY-1 and Tci-MEP-1 was tested in a direct comparison with the original eight-component vaccine. A further group was immunised with Tci-MEP-1 in combination with a mutated form of Tci-APY-1 (mTci-APY-1), which had no enzymatic activity. Across the trial, the mean faecal egg count levels of the eight-antigen recipients were lower than those of the adjuvant only control group (P = 0.013) and the mean FEC of the mTci-APY-1 and Tci-MEP-1 recipients was lower, although not statistically significantly, than that of the adjuvant-only control group (P = 0.093). Mean cumulative faecal egg count levels were reduced by 43% in lambs immunised with mTci-APY-1 plus Tci-MEP-1 compared with the controls (P = 0.079).
Collapse
Affiliation(s)
- Alasdair J Nisbet
- Moredun Research Institute, Pentlands Science Park, Edinburgh EH26 0PZ, United Kingdom.
| | - Tom N McNeilly
- Moredun Research Institute, Pentlands Science Park, Edinburgh EH26 0PZ, United Kingdom
| | - Daniel R G Price
- Moredun Research Institute, Pentlands Science Park, Edinburgh EH26 0PZ, United Kingdom
| | - E Margaret Oliver
- Moredun Research Institute, Pentlands Science Park, Edinburgh EH26 0PZ, United Kingdom
| | - Yvonne Bartley
- Moredun Research Institute, Pentlands Science Park, Edinburgh EH26 0PZ, United Kingdom
| | - Mairi Mitchell
- Moredun Research Institute, Pentlands Science Park, Edinburgh EH26 0PZ, United Kingdom
| | | | - Jacqueline B Matthews
- Moredun Research Institute, Pentlands Science Park, Edinburgh EH26 0PZ, United Kingdom
| |
Collapse
|
43
|
Gascoigne E, Morgan ER, Lovatt F, Vineer HR. Controlling nematode infections in sheep: application of HACCP. IN PRACTICE 2018. [DOI: 10.1136/inp.k3858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
44
|
Shears RK, Bancroft AJ, Sharpe C, Grencis RK, Thornton DJ. Vaccination Against Whipworm: Identification of Potential Immunogenic Proteins in Trichuris muris Excretory/Secretory Material. Sci Rep 2018. [PMID: 29540816 PMCID: PMC5851985 DOI: 10.1038/s41598-018-22783-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Trichuris trichiura (whipworm) is one of the four major soil-transmitted helminth infections of man, affecting an estimated 465 million people worldwide. An effective vaccine that induces long-lasting protective immunity against T. trichiura would alleviate the morbidity associated with this intestinal-dwelling parasite, however the lack of known host protective antigens has hindered vaccine development. Here, we show that vaccination with ES products stimulates long-lasting protection against chronic infection in male C57BL/6 mice. We also provide a framework for the identification of immunogenic proteins within T. muris ES, and identify eleven candidates with direct homologues in T. trichiura that warrant further study. Given the extensive homology between T. muris and T. trichiura at both the genomic and transcriptomic levels, this work has the potential to advance vaccine design for T. trichiura.
Collapse
Affiliation(s)
- Rebecca K Shears
- Wellcome Trust Centre for Cell-Matrix Research and Manchester Immunology Group, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, M13 9PT, England
| | - Allison J Bancroft
- Wellcome Trust Centre for Cell-Matrix Research and Manchester Immunology Group, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, M13 9PT, England
| | - Catherine Sharpe
- Wellcome Trust Centre for Cell-Matrix Research and Manchester Immunology Group, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, M13 9PT, England
| | - Richard K Grencis
- Wellcome Trust Centre for Cell-Matrix Research and Manchester Immunology Group, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, M13 9PT, England
| | - David J Thornton
- Wellcome Trust Centre for Cell-Matrix Research and Manchester Immunology Group, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, M13 9PT, England.
| |
Collapse
|
45
|
Stutzer C, Richards SA, Ferreira M, Baron S, Maritz-Olivier C. Metazoan Parasite Vaccines: Present Status and Future Prospects. Front Cell Infect Microbiol 2018; 8:67. [PMID: 29594064 PMCID: PMC5859119 DOI: 10.3389/fcimb.2018.00067] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 02/26/2018] [Indexed: 12/21/2022] Open
Abstract
Eukaryotic parasites and pathogens continue to cause some of the most detrimental and difficult to treat diseases (or disease states) in both humans and animals, while also continuously expanding into non-endemic countries. Combined with the ever growing number of reports on drug-resistance and the lack of effective treatment programs for many metazoan diseases, the impact that these organisms will have on quality of life remain a global challenge. Vaccination as an effective prophylactic treatment has been demonstrated for well over 200 years for bacterial and viral diseases. From the earliest variolation procedures to the cutting edge technologies employed today, many protective preparations have been successfully developed for use in both medical and veterinary applications. In spite of the successes of these applications in the discovery of subunit vaccines against prokaryotic pathogens, not many targets have been successfully developed into vaccines directed against metazoan parasites. With the current increase in -omics technologies and metadata for eukaryotic parasites, target discovery for vaccine development can be expedited. However, a good understanding of the host/vector/pathogen interface is needed to understand the underlying biological, biochemical and immunological components that will confer a protective response in the host animal. Therefore, systems biology is rapidly coming of age in the pursuit of effective parasite vaccines. Despite the difficulties, a number of approaches have been developed and applied to parasitic helminths and arthropods. This review will focus on key aspects of vaccine development that require attention in the battle against these metazoan parasites, as well as successes in the field of vaccine development for helminthiases and ectoparasites. Lastly, we propose future direction of applying successes in pursuit of next generation vaccines.
Collapse
Affiliation(s)
- Christian Stutzer
- Tick Vaccine Group, Department of Genetics, University of Pretoria, Pretoria, South Africa
| | | | | | | | | |
Collapse
|
46
|
Abstract
Helminth infections have large negative impacts on production efficiency in ruminant farming systems worldwide, and their effective management is essential if livestock production is to increase to meet future human needs for dietary protein. The control of helminths relies heavily on routine use of chemotherapeutics, but this approach is unsustainable as resistance to anthelmintic drugs is widespread and increasing. At the same time, infection patterns are being altered by changes in climate, land-use and farming practices. Future farms will need to adopt more efficient, robust and sustainable control methods, integrating ongoing scientific advances. Here, we present a vision of helminth control in farmed ruminants by 2030, bringing to bear progress in: (1) diagnostic tools, (2) innovative control approaches based on vaccines and selective breeding, (3) anthelmintics, by sustainable use of existing products and potentially new compounds, and (4) rational integration of future control practices. In this review, we identify the technical advances that we believe will place new tools in the hands of animal health decision makers in 2030, to enhance their options for control and allow them to achieve a more integrated and sustainable approach to helminth control in support of animal welfare and production.
Collapse
|
47
|
Wesołowska A, Basałaj K, Norbury LJ, Sielicka A, Wędrychowicz H, Zawistowska-Deniziak A. Vaccination against Fasciola hepatica using cathepsin L3 and B3 proteases delivered alone or in combination. Vet Parasitol 2017; 250:15-21. [PMID: 29329618 DOI: 10.1016/j.vetpar.2017.12.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 12/04/2017] [Accepted: 12/05/2017] [Indexed: 11/29/2022]
Abstract
No licensed vaccine is currently available for prevention of Fasciola hepatica infections. However, considering the alarming increase in drug resistance, there is an urgent need for a safe and fully effective vaccine against fasciolosis. Here, we tested if cathepsins L (FhCL3-1, FhCL3-2) and B (FhCB3) secreted by juvenile liver flukes are viable vaccine targets when delivered alone or in combination in a rat model. Since control over the early immune response is crucial for parasite's establishment in its host, it was hypothesised that targeting fluke juvenile stages may prove beneficial. Moreover, it was assumed that selected antigens will act in a cumulative manner to interfere with liver fluke migration and thereby will reduce F. hepatica infection. Recombinant FhCL3-1 and FhCL3-2 delivered alone reduced liver fluke burdens by 47 % and 63 %, respectively. A trivalent vaccine containing rFhCL3-1/CL3-2/CB3 did not increase the protective vaccine efficacy compared to the rFhCL3-2 vaccinated group (53 %), although, reductions in liver fluke wet weight (statistically significant) and liver damage score were most pronounced. Further, the highest IgG1 and IgG2a levels were seen in rFhCL3-2 vaccinated rats, the group for which the highest reduction in worm burden was demonstrated. Moreover, IgG1 and IgG2a levels in vaccinated rats were significantly elevated compared to those reported for control groups up to 4 week post-infection. While the mechanism of protection remains unknown, it appears that it depends on vaccine-induced antibodies directed against cathepsins. The obtained results imply that F. hepatica juvenile-specific cathepsins are promising vaccine candidates that induce responses that successfully target early migratory liver fluke stages. Now, the challenge is to evaluate these juvenile-specific cathepsins for use in livestock.
Collapse
Affiliation(s)
- Agnieszka Wesołowska
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences,Twarda 51/55, 00-818, Warsaw, Poland
| | - Katarzyna Basałaj
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences,Twarda 51/55, 00-818, Warsaw, Poland
| | - Luke J Norbury
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences,Twarda 51/55, 00-818, Warsaw, Poland; School of Science, RMIT University, Bundoora, Victoria, 3083, Australia
| | - Alicja Sielicka
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences,Twarda 51/55, 00-818, Warsaw, Poland
| | - Halina Wędrychowicz
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences,Twarda 51/55, 00-818, Warsaw, Poland
| | - Anna Zawistowska-Deniziak
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences,Twarda 51/55, 00-818, Warsaw, Poland.
| |
Collapse
|
48
|
Charlier J, Thamsborg SM, Bartley DJ, Skuce PJ, Kenyon F, Geurden T, Hoste H, Williams AR, Sotiraki S, Höglund J, Chartier C, Geldhof P, van Dijk J, Rinaldi L, Morgan ER, von Samson-Himmelstjerna G, Vercruysse J, Claerebout E. Mind the gaps in research on the control of gastrointestinal nematodes of farmed ruminants and pigs. Transbound Emerg Dis 2017; 65 Suppl 1:217-234. [PMID: 29124904 DOI: 10.1111/tbed.12707] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Indexed: 12/31/2022]
Abstract
Gastrointestinal (GI) nematode control has an important role to play in increasing livestock production from a limited natural resource base and to improve animal health and welfare. In this synthetic review, we identify key research priorities for GI nematode control in farmed ruminants and pigs, to support the development of roadmaps and strategic research agendas by governments, industry and policymakers. These priorities were derived from the DISCONTOOLS gap analysis for nematodes and follow-up discussions within the recently formed Livestock Helminth Research Alliance (LiHRA). In the face of ongoing spread of anthelmintic resistance (AR), we are increasingly faced with a failure of existing control methods against GI nematodes. Effective vaccines against GI nematodes are generally not available, and anthelmintic treatment will therefore remain a cornerstone for their effective control. At the same time, consumers and producers are increasingly concerned with environmental issues associated with chemical parasite control. To address current challenges in GI nematode control, it is crucial to deepen our insights into diverse aspects of epidemiology, AR, host immune mechanisms and the socio-psychological aspects of nematode control. This will enhance the development, and subsequent uptake, of the new diagnostics, vaccines, pharma-/nutraceuticals, control methods and decision support tools required to respond to the spread of AR and the shifting epidemiology of GI nematodes in response to climatic, land-use and farm husbandry changes. More emphasis needs to be placed on the upfront evaluation of the economic value of these innovations as well as the socio-psychological aspects to prioritize research and facilitate uptake of innovations in practice. Finally, targeted regulatory guidance is needed to create an innovation-supportive environment for industries and to accelerate the access to market of new control tools.
Collapse
Affiliation(s)
- J Charlier
- Kreavet, Kruibeke, Belgium.,Avia-GIS, Zoersel, Belgium
| | - S M Thamsborg
- Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg C, Denmark
| | | | - P J Skuce
- Moredun Research Institute, Edinburgh, UK
| | - F Kenyon
- Moredun Research Institute, Edinburgh, UK
| | | | - H Hoste
- UMR IHAP 1225, INRA, ENVT, Université de Toulouse, Toulouse, France
| | - A R Williams
- Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg C, Denmark
| | - S Sotiraki
- VetResInst, HAO-DEMETER, Thessaloniki, Greece
| | - J Höglund
- BVF, Section for Parasitology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | | | - P Geldhof
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - J van Dijk
- Institute of Infection and Global Health, University of Liverpool, Neston, Cheshire, UK
| | - L Rinaldi
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Napoli, Italy
| | - E R Morgan
- Institute for Global Food Security, Queen's University Belfast, Belfast, UK.,School of Veterinary Science, University of Bristol, North Somerset, UK
| | | | - J Vercruysse
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - E Claerebout
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| |
Collapse
|
49
|
González-Hernández A, Borloo J, Peelaers I, Casaert S, Leclercq G, Claerebout E, Geldhof P. Comparative analysis of the immune responses induced by native versus recombinant versions of the ASP-based vaccine against the bovine intestinal parasite Cooperia oncophora. Int J Parasitol 2017; 48:41-49. [PMID: 28859849 DOI: 10.1016/j.ijpara.2017.07.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 06/28/2017] [Accepted: 07/03/2017] [Indexed: 11/25/2022]
Abstract
The protective capacities of a native double-domain activation-associated secreted protein (ndd-ASP)-based vaccine against the cattle intestinal nematode Cooperia oncophora has previously been demonstrated. However, protection analysis upon vaccination with a recombinantly produced antigen has never been performed. Therefore, the aim of the current study was to test the protective potential of a Pichia-produced double-domain ASP (pdd-ASP)-based vaccine against C. oncophora. Additionally, we aimed to compare the cellular and humoral mechanisms underlying the vaccine-induced responses by the native (ndd-ASP) and recombinant vaccines. Immunisation of cattle with the native C. oncophora vaccine conferred significant levels of protection after an experimental challenge infection, whereas the recombinant vaccine did not. Moreover, vaccination with ndd-ASP resulted in a higher proliferation of CD4-T cells both systemically and in the small intestinal mucosa when compared with animals vaccinated with the recombinant antigen. In terms of humoral response, although both native and recombinant vaccines induced similar levels of antibodies, animals vaccinated with the native vaccine were able to raise antibodies with greater specificity towards ndd-ASP in comparison with antibodies raised by vaccination with the recombinant vaccine, suggesting a differential immune recognition towards the ndd-ASP and pdd-ASP. Finally, the observation that animals displaying antibodies with higher percentages of recognition towards ndd-ASP also exhibited the lowest egg counts suggests a potential relationship between antibody specificity and protection.
Collapse
Affiliation(s)
- Ana González-Hernández
- Laboratory of Parasitology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Sciences, Ghent University, Belgium
| | - Jimmy Borloo
- Laboratory of Parasitology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Sciences, Ghent University, Belgium
| | - Iris Peelaers
- Laboratory of Parasitology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Sciences, Ghent University, Belgium
| | - Stijn Casaert
- Laboratory of Parasitology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Sciences, Ghent University, Belgium
| | - Georges Leclercq
- Laboratory of Experimental Immunology, Department of Clinical Chemistry, Microbiology and Immunology, Faculty of Medicine and Health Sciences, Ghent University, Belgium
| | - Edwin Claerebout
- Laboratory of Parasitology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Sciences, Ghent University, Belgium
| | - Peter Geldhof
- Laboratory of Parasitology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Sciences, Ghent University, Belgium.
| |
Collapse
|
50
|
Matthews JB, Geldhof P, Tzelos T, Claerebout E. Progress in the development of subunit vaccines for gastrointestinal nematodes of ruminants. Parasite Immunol 2017; 38:744-753. [PMID: 27726158 DOI: 10.1111/pim.12391] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 10/05/2016] [Indexed: 11/30/2022]
Abstract
The global increase in anthelmintic resistant nematodes of ruminants, together with consumer concerns about chemicals in food, necessitates the development of alternative methods of control for these pathogens. Subunit recombinant vaccines are ideally placed to fill this gap. Indeed, they are probably the only valid option for the long-term control of ruminant parasitic nematodes given the increasing ubiquity of multidrug resistance in a range of worm species across the world. The development of a subunit multicellular parasite vaccine to the point of practical application would be a groundbreaking step in the control of these important endemic infections of livestock. This review summarizes the current status of subunit vaccine development for a number of important gastrointestinal nematodes of cattle and sheep, with a focus on the limitations and problems encountered thus far, and suggestions as to how these hurdles might be overcome.
Collapse
Affiliation(s)
- J B Matthews
- Vaccines Division, Moredun Research Institute, Pentlands Science Park, Edinburgh, UK
| | - P Geldhof
- Faculty of Veterinary Medicine, Department of Virology, Parasitology and Immunology, Ghent University, Merelbeke, Belgium
| | - T Tzelos
- Vaccines Division, Moredun Research Institute, Pentlands Science Park, Edinburgh, UK
| | - E Claerebout
- Faculty of Veterinary Medicine, Department of Virology, Parasitology and Immunology, Ghent University, Merelbeke, Belgium
| |
Collapse
|