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Elnagga MM, Abdellrazeq GS, Sacco RE, Harsla TR, Mucci ML, Fry LM, Hulubei V, Davis WC. Comparative analysis of the specificity of monoclonal antibodies developed against the bottlenose dolphin, Tursiops truncatus, TNF-α, IL1-β, IL-6, IL-8, IL-10 with monoclonal antibodies made against ovine IFN-γ bovine IL-17A and IL-1β revealed they recognize epitopes conserved on dolphin and bovine orthologues. Vet Immunol Immunopathol 2022; 250:110456. [PMID: 35728348 DOI: 10.1016/j.vetimm.2022.110456] [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: 07/18/2021] [Revised: 05/21/2022] [Accepted: 06/15/2022] [Indexed: 11/26/2022]
Abstract
Opportunities to include Cetancodontamorpha in the study of the evolution of the immune system in the clades of Artiodactylamorpha, Ruminantiamorpha, Suinamorpha, and Camelidamorpha have increased with the use of the bottlenose dolphin, Tursiops truncatus, as a sentinel species to study the effects of environmental pollutants on the health of marine mammals. Efforts are currently underway to increase the number reagents needed for detailed studies. Thus far, screening of monoclonal antibodies (mAbs) made to leukocyte differentiation molecules (LDM) and the major histocompatibility (MHC) class I and class II molecules in Ruminantiamorpha have yielded some mAbs that recognize conserved epitopes expressed on orthologues in the bottlenose dolphin. More direct approaches are in progress to identify additional mAbs to bottlenose LDM and cytokines. As reported here, both direct and indirect approaches were used to identify mAbs specific for cytokines useful in monitoring the effects of environmental pollutants on the immune system. Immunization of mice with expressed bottlenose dolphin cytokines yielded mAbs specific for IFN-γ, TNF-α, IL-6, IL-8, IL-10, and IL-17A. Screening of previously developed mAbs used in livestock immunology research revealed mAbs developed against ovine IFN-γ and bovine IL-17 and IL-1β recognize conserved epitopes in bottlenose dolphin orthologues. The mAbs identified in the present study expand the reagents available to study the function of the immune system in bottlenose dolphins and cattle.
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Affiliation(s)
- Mahmoud M Elnagga
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Gaber S Abdellrazeq
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Randy E Sacco
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, United States Department of Agriculture, Agricultural Research Service, Ames, IA, USA
| | - Trevor R Harsla
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, United States Department of Agriculture, Agricultural Research Service, Ames, IA, USA
| | - Mallory L Mucci
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, United States Department of Agriculture, Agricultural Research Service, Ames, IA, USA
| | - Lindsay M Fry
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA; Animal Disease Research Unit, Agricultural Research Service, United States Department of Agriculture, Pullman, WA, USA
| | - Victoria Hulubei
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA
| | - William C Davis
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA.
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2
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Thomas BL, Guadagnin AR, Fehlberg LK, Sugimoto Y, Shinzato I, Drackley JK, Cardoso FC. Feeding rumen-protected lysine to dairy cows prepartum improves performance and health of their calves. J Dairy Sci 2021; 105:2256-2274. [PMID: 34955262 DOI: 10.3168/jds.2021-20545] [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: 03/30/2021] [Accepted: 10/17/2021] [Indexed: 11/19/2022]
Abstract
Providing adequate concentrations of AA in the prepartum diet is pivotal for the cow's health and performance. However, less is known about the potential in utero effects of particular AA on early-life performance of calves. This experiment was conducted to determine the effects on dairy calves when their dams were fed rumen-protected lysine (RPL; AjiPro-L Generation 3, Ajinomoto Heartland Inc.; 0.54% dry matter of total mixed ration as top dress) from 26 ± 4.6 d (mean ± standard deviation) before calving until calving. Seventy-eight male (M) and female (F) Holstein calves were assigned to 2 treatments based on their dams' prepartum treatment, RPL supplementation (PRE-L) or without RPL (CON). At the time of birth (0.5-2 h after calving), before colostrum was fed, blood samples were collected. An initial body weight was obtained at 1 to 3 h after birth. Calves were fed 470 g of colostrum replacer (Land O'Lakes Bovine IgG Colostrum Replacer, Land O'Lakes, Inc.) diluted in 3.8 L of water. Calves were provided water ad libitum and fed milk replacer (Advance Excelerate, Milk Specialties Global Animal Nutrition; 28.5% crude protein, 15% fat) at 0600 h and 1700 h until 42 d of age. Calves were measured weekly, at weaning (d 42), and at the end of the experimental period (d 56). Plasma concentrations of AA were measured on d 0, 7, and 14 d using ultra-performance liquid chromatography-mass spectrometry (Waters) with a derivatization method (AccQ-Tag Derivatization). Final body weight was greater for M (87 ± 11 kg) than F (79 ± 7 kg). Calves in PRE-L tended to have greater dry matter (814 ± 3 g/d) and crude protein (234 ± 6 g/d) intakes than those in CON (793 ± 9 g/d and 228 ± 11 g/d, respectively). Calves in PRE-L had greater average daily gain (0.96 ± 0.04 kg/d) than calves in CON (0.85 ± 0.03 kg/d) during wk 6 to 8. Calves in PRE-L tended to be medicated fewer days than CON (4.7 ± 1.2 d vs. 6.2 ± 3.4 d, respectively). Calves in PRE-L-M and CON-F (2,916 ± 112 µM and 2,848 ± 112 µM, respectively) had greater total AA concentration in plasma than calves in PRE-L-F and CON-M (2,684 ± 112 µM and 2,582 ± 112 µM, respectively). Calves in PRE-L-F and CON-M (4.09 ± 0.11% and 4.16 ± 0.11%, respectively) had greater concentration of Lys as a percentage of total AA compared with calves in CON-F and PRE-L-M (3.91 ± 0.11% and 3.90 ± 0.11%, respectively). Calves in PRE-L tended to have greater percentage of phagocytic neutrophils (39.6 ± 1.59%) than calves in CON (35.9 ± 1.59%). In conclusion, increasing the metabolizable lysine provided to prepartum dairy cows had modest effect over offspring performance, with the major result being a greater average daily gain for calves in PRE-L during the preweaning phase (wk 6-8).
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Affiliation(s)
- B L Thomas
- Department of Animal Sciences, University of Illinois, Urbana 61801
| | - A R Guadagnin
- Department of Animal Sciences, University of Illinois, Urbana 61801
| | - L K Fehlberg
- Department of Animal Sciences, University of Illinois, Urbana 61801
| | - Y Sugimoto
- Ajinomoto Co. Inc., Tokyo, Japan 104-8315
| | - I Shinzato
- Ajinomoto Co. Inc., Tokyo, Japan 104-8315
| | - J K Drackley
- Department of Animal Sciences, University of Illinois, Urbana 61801
| | - F C Cardoso
- Department of Animal Sciences, University of Illinois, Urbana 61801.
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Makau MC, Powell J, Prendergast J, Latré de Laté P, Morrison LJ, Fisch A, Gathura P, Kitala P, Connelley T, Toye P. Inverted CD4 +/CD8 + T cell ratio in Boran (Bos indicus) cattle. Vet Immunol Immunopathol 2020; 230:110126. [PMID: 33080530 PMCID: PMC7700890 DOI: 10.1016/j.vetimm.2020.110126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/29/2020] [Accepted: 10/03/2020] [Indexed: 10/26/2022]
Abstract
The CD4+/CD8+ ratio is used as a marker of the immune regulation of T cell balance. When the ratio in peripheral blood is less than 1, this is considered an indication of immune suppression in an individual. Previous work on bovine Peripheral Blood Mononuclear Cells (PBMC) has consistently reported a ratio ≥1 as seen in other mammalian hosts, i.e. higher circulating CD4+ cell numbers than CD8+ cell numbers. However, a consistent inverted CD4+/CD8+ ratio (<1) was observed in Boran cattle, an African Bos indicus breed. The T cell populations were characterized in Boran cattle (n = 52), revealing higher percentages of circulating CD8+ cells (31.9 % average) than CD4+ cells (19.1 % average), thus resulting in the inversion of the expected T cell homeostasis in these animals. The results show that this inversion is not an effect of age or relatedness of the cattle, rather, it was shared by almost all Boran cattle used in this study. Despite this inversion being a feature shared by both males and females, the female cattle had significantly higher CD4+/CD8+ ratios than the male Boran. This paper describes the characteristics of the T cell fractions in the study animals and compares the findings to those of other Boran cattle in Kenya, and four other cattle breeds representing African indicine, African taurine, Brazilian indicine and European taurine cattle. We demonstrate that the consistent observation of inverted CD4+/CD8+ cell ratio was restricted to the Boran.
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Affiliation(s)
- Maurine C Makau
- International Livestock Research Institute (ILRI) and Centre for Tropical Livestock Genetics and Health, P.O. Box 30709, Nairobi 00100, Kenya.
| | - Jessica Powell
- The Roslin Institute and Centre for Tropical Livestock Genetics and Health, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, United Kingdom
| | - James Prendergast
- The Roslin Institute and Centre for Tropical Livestock Genetics and Health, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, United Kingdom
| | - Perle Latré de Laté
- International Livestock Research Institute (ILRI) and Centre for Tropical Livestock Genetics and Health, P.O. Box 30709, Nairobi 00100, Kenya
| | - Liam J Morrison
- The Roslin Institute and Centre for Tropical Livestock Genetics and Health, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, United Kingdom
| | - Andressa Fisch
- Ribeirão Preto College of Nursing, University of Sao Paulo, Avenida dos Bandeirantes, 3900, 14040-902 Ribeirao Preto Brazil
| | - Peter Gathura
- The University of Nairobi, Department of Public Health, Pharmacology and Toxicology, P.O Box 30197-00100, Nairobi, Kenya
| | - Phillip Kitala
- The University of Nairobi, Department of Public Health, Pharmacology and Toxicology, P.O Box 30197-00100, Nairobi, Kenya
| | - Timothy Connelley
- The Roslin Institute and Centre for Tropical Livestock Genetics and Health, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, United Kingdom
| | - Philip Toye
- International Livestock Research Institute (ILRI) and Centre for Tropical Livestock Genetics and Health, P.O. Box 30709, Nairobi 00100, Kenya
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Abdellrazeq GS, Mahmoud AH, Park KT, Fry LM, Elnaggar MM, Schneider DA, Hulubei V, Davis WC. relA is Achilles' heel for mycobacterial pathogens as demonstrated with deletion mutants in Mycobacterium avium subsp. paratuberculosis and mycobacterium bovis bacillus Calmette-Guérin (BCG). Tuberculosis (Edinb) 2020; 120:101904. [PMID: 32090858 DOI: 10.1016/j.tube.2020.101904] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 12/22/2019] [Accepted: 01/13/2020] [Indexed: 12/30/2022]
Abstract
Studies with Mycobacterium avium subsp. paratuberculosis (Map) in cattle revealed deletion of relA, a global regulator gene, abrogated ability of the mutant to establish a persistent infection, attributed to development of an immune response that cleared infection. Analysis of the recall response demonstrated presence of CD8 cytotoxic T cells that kill intracellular bacteria. Replication of the primary response demonstrated the CTL response could be elicited with the ΔMap/relA mutant or the target of the immune response, a 35 kD membrane protein. Follow up comparative studies with Mycobacterium bovis bacillus Calmette-Guérin (BCG) and a BCG relA (ΔBCG/relA) deletion mutant revealed deletion of relA enhanced the CTL response compared to BCG. Analysis of the cytokine profile of cells proliferating in response to stimulation with BCG or BCG/relA showed increased expression of IFN-γ, TNF-α, and IL-17 by cells stimulated with ΔBCG/relA in comparison with BCG. The proliferative and CTL responses were markedly reduced in response to stimulation with heat killed BCG or ΔBCG/relA. Intracellular bacterial killing was mediated through the perforin, granzyme B (GnzB), and the granulysin pathway. The data indicate relA is the Achilles' heel for pathogenic mycobacteria and deletion may be key to improving efficacy of attenuated vaccines for mycobacterial pathogens.
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Affiliation(s)
- Gaber S Abdellrazeq
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Asmaa H Mahmoud
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA; Veterinary Quarantine of Alexandria, General Organization for Veterinary Services, Ministry of Agriculture and Land Reclamation, Egypt
| | - Kun-Taek Park
- Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, South Korea
| | - Lindsay M Fry
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA; USDA, ARS, Animal Disease Research Unit, Pullman, WA, USA
| | - Mahmoud M Elnaggar
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - David A Schneider
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA; USDA, ARS, Animal Disease Research Unit, Pullman, WA, USA
| | - Victoria Hulubei
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA
| | - William C Davis
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA.
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Simultaneous cognate epitope recognition by bovine CD4 and CD8 T cells is essential for primary expansion of antigen-specific cytotoxic T-cells following ex vivo stimulation with a candidate Mycobacterium avium subsp. paratuberculosis peptide vaccine. Vaccine 2020; 38:2016-2025. [PMID: 31902643 DOI: 10.1016/j.vaccine.2019.12.052] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 10/28/2019] [Accepted: 12/22/2019] [Indexed: 12/12/2022]
Abstract
Studies in cattle show CD8 cytotoxic T cells (CTL), with the ability to kill intracellular bacteria, develop following stimulation of monocyte-depleted peripheral blood mononuclear cells (mdPBMC) with antigen presenting cells (APC, i.e. conventional dendritic cells [cDC] and monocyte-derived DC [MoDC]) pulsed with MMP, a membrane protein from Mycobacterium avium subsp. paratuberculosis (Map) encoded by MAP2121c. CTL activity was diminished if CD4 T cells were depleted from mdPBMC before antigen (Ag) presentation by APC, suggesting simultaneous cognate recognition of MMP epitopes presented by MHC I and MHC II molecules to CD4 and CD8 T cells is essential for development of CTL activity. To explore this possibility, studies were conducted with mdPBMC cultures in the presence of monoclonal antibodies (mAbs) specific for MHC class I and MHC class II molecules. The CTL response of mdPBMC to MMP-pulsed APC was completely blocked in the presence of mAbs to both MHC I and II molecules and also blocked in the presence of mAbs to either MHC I or MHC II alone. The results demonstrate simultaneous cognate recognition of Ag by CD4 and CD8 T cells is essential for delivery of CD4 T cell help to CD8 T cells to elicit development of CTL.
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Franceschi V, Mahmoud AH, Abdellrazeq GS, Tebaldi G, Macchi F, Russo L, Fry LM, Elnaggar MM, Bannantine JP, Park KT, Hulubei V, Cavirani S, Davis WC, Donofrio G. Capacity to Elicit Cytotoxic CD8 T Cell Activity Against Mycobacterium avium subsp. paratuberculosis Is Retained in a Vaccine Candidate 35 kDa Peptide Modified for Expression in Mammalian Cells. Front Immunol 2019; 10:2859. [PMID: 31921129 PMCID: PMC6917596 DOI: 10.3389/fimmu.2019.02859] [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: 08/02/2019] [Accepted: 11/21/2019] [Indexed: 01/24/2023] Open
Abstract
Studies focused on development of an attenuated vaccine against Mycobacterium avium subsp. paratuberculosis (Map), the causative agent of paratuberculosis (Ptb) in cattle and other species, revealed that deletion of relA, a global gene regulator, abrogates the ability of Map to establish a persistent infection. In the absence of relA, cattle develop CD8 cytotoxic T cells (CTL) with the ability to kill intracellular bacteria. Analysis of the recall response to a relA mutant, Map/ΔrelA, with cells from a vaccinated steer demonstrated that a 35-kDa membrane peptide (MMP) is one of the targets of the response. This observation suggested that it might be possible to develop a peptide-based vaccine. As reported here, the gene encoding the hypothetical MMP ORF, MAP2121c, was modified for expression in mammalian cells as a first step in developing an expression cassette for incorporation into a mammalian expression vector. The modified sequence of MMP, tPA-MMP, was mutated to generate two additional sequences for the study, one with substitutions to replace five potential residues that could be glycosylated, tPA-MMP-5mut, and one with substitutions to replace the first two potential residues that could be glycosylated, tPA-MMP-2mut. The sequences were placed in an expression cassette to produce peptides for analysis. An ex vivo platform was used with flow cytometry and a bacterium viability assay to determine if modifications in the gene encoding MMP for expression in mammalian cells altered its capacity to elicit development of CD8 CTL, essential for its use in a peptide-based vaccine. Monocyte-depleted PBMC (mdPBMC) were stimulated with antigen-presenting cells (APC) pulsed with different MMP constructs. CD4 and CD8 T cells proliferated in response to stimulation with MMP (control) expressed in Escherichia coli (eMMP), tPA-MMP, and tPA-MMP-2mut. CD8 T cells retained the capacity to kill intracellular bacteria. The tPA-MMP-5mut failed to elicit a proliferative response and was not included in further studies. The data show that the expression cassettes containing MMP and MMP-2mut can be used to screen and select a mammalian expression vector for the development of an efficacious peptide-based vaccine against Ptb.
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Affiliation(s)
| | - Asmaa H Mahmoud
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, United States.,Veterinary Quarantine of Alexandria, General Organization for Veterinary Services, Ministry of Agriculture, Alexandria, Egypt
| | - Gaber S Abdellrazeq
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, United States.,Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Giulia Tebaldi
- Department of Medical-Veterinary Science, University of Parma, Parma, Italy
| | - Francesca Macchi
- Department of Medical-Veterinary Science, University of Parma, Parma, Italy
| | - Luca Russo
- Department of Medical-Veterinary Science, University of Parma, Parma, Italy
| | - Lindsay M Fry
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, United States.,Animal Disease Research Unit, Agricultural Research Service (ARS), USDA, Pullman, WA, United States
| | - Mahmoud M Elnaggar
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, United States.,Veterinary Quarantine of Alexandria, General Organization for Veterinary Services, Ministry of Agriculture, Alexandria, Egypt
| | - John P Bannantine
- National Animal Disease Center, Agricultural Research Service (ARS), USDA, Ames, IA, United States
| | - Kun-Taek Park
- Department of Biotechnology, Inje University, Gimhae, South Korea
| | - Victoria Hulubei
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, United States
| | - Sandro Cavirani
- Department of Medical-Veterinary Science, University of Parma, Parma, Italy
| | - William C Davis
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, United States
| | - Gaetano Donofrio
- Department of Medical-Veterinary Science, University of Parma, Parma, Italy
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7
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A peptide-based vaccine for Mycobacterium avium subspecies paratuberculosis. Vaccine 2019; 37:2783-2790. [PMID: 31003915 DOI: 10.1016/j.vaccine.2019.04.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 03/26/2019] [Accepted: 04/14/2019] [Indexed: 12/22/2022]
Abstract
Recent efforts to develop a live attenuated vaccine against Mycobacterium avium subsp. paratuberculosis (Map), the causative agent of Johne's disease (JD), revealed relA is important in Map virulence. Deletion of the relA gene impairs the ability of Map to establish a persistent infection. Analysis of the basis for this observation revealed infection with a relA deletion mutant (ΔrelA) elicits development of cytotoxic CD8 T cells (CTL) with the ability to kill intracellular bacteria. Further analysis of the recall response elicited by ΔrelA vaccination showed a 35 kDa membrane peptide (MMP) is one of the targets of the immune response, suggesting it might be possible to develop a peptide-based vaccine based on MMP. To explore this possibility, ex vivo vaccination studies were conducted with MMP alone and incorporated into a nanoparticle (NP) vector comprised of poly (D, L-lactide-co-glycolide) and monophosphoryl lipid A (PLGA/MPLA). As reported, ex vivo vaccination studies showed CD8 CTL were elicited with classic and monocyte derived dendritic cells (cDC and MoDC) pulsed with MMP alone and incorporated into a PGLA/MPLA vector. Incorporation of MMP into a NP vector enhanced the ability of CD8 CTL to kill intracellular bacteria. The findings indicate incorporation of MMP into a PGLA/MPLA nanoparticle vector is one of the possible ways to develop a MMP based vaccine for Johne's disease.
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Elnaggar MM, Abdellrazeq GS, Dassanayake RP, Fry LM, Hulubei V, Davis WC. Characterization of αβ and γδ T cell subsets expressing IL-17A in ruminants and swine. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 85:115-124. [PMID: 29627456 DOI: 10.1016/j.dci.2018.04.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/03/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
As part of our ongoing program to expand immunological reagents available for research in cattle, we developed a monoclonal antibody (mAb) to bovine interleukin-17A (IL-17A), a multifunctional cytokine centrally involved in regulating innate and adaptive immune responses. Initial comparative studies demonstrated the mAb recognizes a conserved epitope expressed on orthologues of IL-17A in sheep, goats and pigs. Comparative flow cytometric analyses of lymphocyte subsets stimulated with phorbol 12-myristate 13-acetate (PMA) and ionomycin revealed differences in expression of IL-17A by CD4, CD8, and γδ T cells across ruminants and swine species. Results in cattle showed the largest proportion of IL-17A+ cells were CD4+ followed by γδ and CD8+ T cells. Further analysis revealed the IL-17A+ γδ T cell subset was comprised of WC1.1+, WC1.2+, and WC1- subsets. Analysis of the IL-17A+ CD8+ T cell subset revealed it was comprised of αβ and γδ T cell subsets. Results in sheep and goats revealed IL-17A is expressed mainly by CD4+ and CD8+ T cells, with little expression by γδ T cells. Analysis of IL-17A+ CD8+ T cells showed the majority were CD8+ αβ in sheep, whereas they were CD8+ γδ in goats. The majority of the sheep and goat IL-17A+ γδ T cells were WC1+. Results obtained in swine showed expression of IL-17A by CD4, CD8, and γδ T cell subsets were similar to results reported in other studies. Comparison of expression of IL-17A with IFN-γ revealed subsets co-expressed IL-17A and IFN-γ in cattle, sheep, and goats. The new mAb expands opportunities for immunology research in ruminants and swine.
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Affiliation(s)
- Mahmoud M Elnaggar
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt.
| | - Gaber S Abdellrazeq
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Rohana P Dassanayake
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, United States Department of Agriculture, Agricultural Research Service, Ames, IA, USA
| | - Lindsay M Fry
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA; Animal Disease Research Unit, Agricultural Research Service, United States Department of Agriculture, Pullman, WA, USA
| | - Victoria Hulubei
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA
| | - William C Davis
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA
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9
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Abdellrazeq GS, Elnaggar MM, Bannantine JP, Park KT, Souza CD, Backer B, Hulubei V, Fry LM, Khaliel SA, Torky HA, Schneider DA, Davis WC. A Mycobacterium avium subsp. paratuberculosis relA deletion mutant and a 35 kDa major membrane protein elicit development of cytotoxic T lymphocytes with ability to kill intracellular bacteria. Vet Res 2018; 49:53. [PMID: 29941017 PMCID: PMC6019527 DOI: 10.1186/s13567-018-0549-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 05/31/2018] [Indexed: 12/20/2022] Open
Abstract
Efforts to develop live attenuated vaccines against Mycobacterium avium subspecies paratuberculosis (Map), using indirect methods to screen Map deletion mutants for potential efficacy, have not been successful. A reduction in the capacity to survive in macrophages has not predicted the ability of mutants to survive in vivo. Previous studies for screening of three deletion mutants in cattle and goats revealed one mutant, with a deletion in relA (ΔMap/relA), could not establish a persistent infection. Further studies, using antigen presenting cells (APC), blood dendritic cells and monocyte derived DC, pulsed with ΔMap/relA or a 35 kDa Map membrane protein (MMP) revealed a component of the response to ΔMap/relA was directed towards MMP. As reported herein, we developed a bacterium viability assay and cell culture assays for analysis and evaluation of cytotoxic T cells generated against ΔMap/relA or MMP. Analysis of the effector activity of responding cells revealed the reason ΔMap/relA could not establish a persistent infection was that vaccination elicited development of cytotoxic CD8 T cells (CTL) with the capacity to kill intracellular bacteria. We demonstrated the same CTL response could be elicited with two rounds of antigenic stimulation of APC pulsed with ΔMap/relA or MMP ex vivo. Cytotoxicity was mediated through the perforin granzyme B pathway. Finally, cognate recognition of peptides presented in context of MHC I and II molecules to CD4 and CD8 T cells is required for development of CTL.
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Affiliation(s)
- Gaber S Abdellrazeq
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA.,Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Mahmoud M Elnaggar
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA.,Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | | | - Kun T Park
- Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gimhae, Gyeongsangnam-do, South Korea
| | - Cleverson D Souza
- Department of Veterinary Clinical Sciences, Washington State University, Pullman, WA, USA
| | - Brian Backer
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA
| | - Victoria Hulubei
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA
| | - Lindsay M Fry
- USDA, ARS, Animal Disease Research Unit, Pullman, WA, USA
| | - Samy A Khaliel
- Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Helmy A Torky
- Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - David A Schneider
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA.,USDA, ARS, Animal Disease Research Unit, Pullman, WA, USA
| | - William C Davis
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA.
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Wilson-Welder JH, Nally JE, Alt DP, Humphrey SB, Olsen SC. Short communication: Lymphocyte proliferative responses in cattle naturally infected with digital dermatitis consist of CD8+ and γδ-T cells but lack CD4+ T cells. J Dairy Sci 2018; 101:8301-8307. [PMID: 29908808 DOI: 10.3168/jds.2017-13913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 05/02/2018] [Indexed: 11/19/2022]
Abstract
Digital dermatitis is an infectious disease of cattle and the leading cause of lameness. This disease is complicated by the reoccurrence of the lesions and the observation of lesions on more than one limb at different time points, indicating infection may not result in a protective immune response. The objective of this study was to characterize the peripheral blood cellular response in naturally infected and naïve cattle to bacterial antigens derived from pathogens associated with digital dermatitis lesions. Peripheral blood mononuclear cells were isolated from dairy cattle identified as having active or chronic lesions during routine hoof-trimming. Following bacterial antigen stimulation, cells were analyzed for proliferation and phenotype by flow cytometry, and culture supernatants were analyzed for IFN-γ secretion. Digital-dermatitis-infected animals had greater serum antibody titers to treponemal antigens, higher percentages of proliferating CD8+, γδ-T cells, and B cells, and increased IFN-γ secretion in vitro when compared with responses of naïve animals. No increase in proliferation of CD4+ T cells was detected in infected or naïve cattle. Although CD8+ and γδ-T cell responses may be antigen specific, the memory nature or long-lived response is yet unknown. The lack of responsiveness of CD4+ memory cells to treponemal antigens could explain the high rate of reoccurrence of digital dermatitis in infected animals.
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Affiliation(s)
- Jennifer H Wilson-Welder
- Infectious Bacterial Diseases, National Animal Disease Center, Agriculture Research Service, USDA, Ames, IA 50010.
| | - Jarlath E Nally
- Infectious Bacterial Diseases, National Animal Disease Center, Agriculture Research Service, USDA, Ames, IA 50010
| | - David P Alt
- Infectious Bacterial Diseases, National Animal Disease Center, Agriculture Research Service, USDA, Ames, IA 50010
| | - Samuel B Humphrey
- Microscopy Services, National Animal Disease Center, Agriculture Research Service, USDA, Ames, IA 50010
| | - Steven C Olsen
- Infectious Bacterial Diseases, National Animal Disease Center, Agriculture Research Service, USDA, Ames, IA 50010
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Grandoni F, Elnaggar MM, Abdellrazeq GS, Signorelli F, Fry LM, Marchitelli C, Hulubei V, Khaliel SA, Torky HA, Davis WC. Characterization of leukocyte subsets in buffalo (Bubalus bubalis) with cross-reactive monoclonal antibodies specific for bovine MHC class I and class II molecules and leukocyte differentiation molecules. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 74:101-109. [PMID: 28433527 DOI: 10.1016/j.dci.2017.04.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 04/17/2017] [Accepted: 04/17/2017] [Indexed: 06/07/2023]
Abstract
Although buffaloes (Bubalus bubalis) are a major component of the livestock industry worldwide, limited progress has been made in the study of the mechanisms regulating the immune response to pathogens and parasites affecting their health and productivity. This has been, in part, attributable to the limited availability of reagents to study immune responses in buffalo. As reported here, a set of cross-reactive monoclonal antibodies (mAbs), developed against bovine, ovine and caprine leukocyte differentiation molecules (LDM) and major histocompatibility complex (MHC) molecules, were identified and used to compare expression of LDM in Italian and Egyptian buffalo. The results show most of the epitopes identified with the mAbs are conserved on LDM and MHC I and II molecules in both lineages of buffalo. Comparison of the composition of lymphocyte subsets between buffalo and cattle revealed they are similar except for expression of CD2 and CD8 on workshop cluster one (WC1) positive γδ T cells. In cattle, CD8 is expressed on a subset of CD2+/WC1- γδ T cells that are present in low frequency in blood of young and old animals, whereas, CD8-/CD2-/WC1+ γδ T cells are present in high frequency in young animals, decreasing with age. In the buffalo, CD2 is expressed on a subset of WC1+ γδ T cells and CD8 is expressed on all WC1+ γδ T cells. The availability of this extensive set of mAbs provides opportunities to study the immunopathogenesis of pathogens and parasites affecting the health of buffalo.
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Affiliation(s)
- Francesco Grandoni
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Centro di ricerca per la Produzione delle Carni e Il Miglioramento genetico (CREA-PCM), Monterotondo, Roma, Italy
| | - Mahmoud M Elnaggar
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Gaber S Abdellrazeq
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Federica Signorelli
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Centro di ricerca per la Produzione delle Carni e Il Miglioramento genetico (CREA-PCM), Monterotondo, Roma, Italy
| | - Lindsay M Fry
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA; USDA, ARS, Animal Disease Research Unit, Pullman, WA 99164, USA
| | - Cinzia Marchitelli
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Centro di ricerca per la Produzione delle Carni e Il Miglioramento genetico (CREA-PCM), Monterotondo, Roma, Italy
| | - Victoria Hulubei
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Samy A Khaliel
- Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Helmy A Torky
- Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - William C Davis
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA.
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Elnaggar MM, Abdellrazeq GS, Mack V, Fry LM, Davis WC, Park KT. Characterization and use of new monoclonal antibodies to CD11c, CD14, and CD163 to analyze the phenotypic complexity of ruminant monocyte subsets. Vet Immunol Immunopathol 2016; 178:57-63. [DOI: 10.1016/j.vetimm.2016.06.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 06/07/2016] [Accepted: 06/27/2016] [Indexed: 11/28/2022]
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13
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Differences in leukocyte differentiation molecule abundances on domestic sheep (Ovis aries) and bighorn sheep (Ovis canadensis) neutrophils identified by flow cytometry. Comp Immunol Microbiol Infect Dis 2016; 46:40-6. [DOI: 10.1016/j.cimid.2016.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 04/12/2016] [Indexed: 01/02/2023]
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