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Elkhamary A, Gerner I, Bileck A, Oreff GL, Gerner C, Jenner F. Comparative proteomic profiling of the ovine and human PBMC inflammatory response. Sci Rep 2024; 14:14939. [PMID: 38942936 PMCID: PMC11213919 DOI: 10.1038/s41598-024-66059-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Accepted: 06/26/2024] [Indexed: 06/30/2024] Open
Abstract
Understanding the cellular and molecular mechanisms of inflammation requires robust animal models. Sheep are commonly used in immune-related studies, yet the validity of sheep as animal models for immune and inflammatory diseases remains to be established. This cross-species comparative study analyzed the in vitro inflammatory response of ovine (oPBMCs) and human PBMCs (hPBMCs) using mass spectrometry, profiling the proteome of the secretome and whole cell lysate. Of the entire cell lysate proteome (oPBMCs: 4217, hPBMCs: 4574 proteins) 47.8% and in the secretome proteome (oPBMCs: 1913, hPBMCs: 1375 proteins) 32.8% were orthologous between species, among them 32 orthologous CD antigens, indicating the presence of six immune cell subsets. Following inflammatory stimulation, 71 proteins in oPBMCs and 176 in hPBMCs showed differential abundance, with only 7 overlapping. Network and Gene Ontology analyses identified 16 shared inflammatory-related terms and 17 canonical pathways with similar activation/inhibition patterns in both species, demonstrating significant conservation in specific immune and inflammatory responses. However, ovine PMBCs also contained a unique WC1+γδ T-cell subset, not detected in hPBMCs. Furthermore, differences in the activation/inhibition trends of seven canonical pathways and the sets of DAPs between sheep and humans, emphasize the need to consider interspecies differences in translational studies and inflammation research.
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Affiliation(s)
- A Elkhamary
- Department for Companion Animals and Horses, Veterm, University Equine Hospital, Vetmeduni Vienna, Vienna, Austria
- Department for Surgery, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
| | - I Gerner
- Department for Companion Animals and Horses, Veterm, University Equine Hospital, Vetmeduni Vienna, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - A Bileck
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - G L Oreff
- Department for Companion Animals and Horses, Veterm, University Equine Hospital, Vetmeduni Vienna, Vienna, Austria
| | - C Gerner
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - F Jenner
- Department for Companion Animals and Horses, Veterm, University Equine Hospital, Vetmeduni Vienna, Vienna, Austria.
- Austrian Cluster for Tissue Regeneration, Vienna, Austria.
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2
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Ciliberti MG, Albenzio M, Sevi A, Frabboni L, Marino R, Caroprese M. Immunomodulatory Role of Rosmarinus officinalis L., Mentha x piperita L., and Lavandula angustifolia L. Essential Oils in Sheep Peripheral Blood Mononuclear Cells. Vet Sci 2024; 11:157. [PMID: 38668424 PMCID: PMC11054635 DOI: 10.3390/vetsci11040157] [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: 02/07/2024] [Revised: 03/22/2024] [Accepted: 03/27/2024] [Indexed: 04/29/2024] Open
Abstract
Recently, the uses of essential oils (EOs) as rumen modifiers, anti-inflammatory agents, and antioxidants were demonstrated in livestock. In the present study, the role of Mentha x piperita L. (MEO), Rosmarinus officinalis L. (REO), and Lavandula angustifolia L. (LEO) EOs in an in vitro sheep model of inflammation was investigated. With this aim, peripheral blood mononuclear cells (PBMCs) were treated with incremental concentrations (3, 5, 7, and 10%) of each EO to test their effects on cell viability and proliferation and on interleukin (IL)-6, IL-10, and IL-8 secretion. The PBMCs were stimulated by Concanavalin A (ConA) alone or in combination with lipopolysaccharide (LPS) mitogen. The positive and negative controls were represented by PBMCs in the presence or absence, respectively, of mitogens only. The cell viability and proliferation were determined by XTT and BrdU assays, while the cytokines were analyzed by ELISA. The EO treatments did not affect the viability; on the contrary, the PBMC proliferation increased in presence of all the EOs tested, according to the different percentages and mitogens used. The IL-10 secretion was higher in both the REO and the LEO tested at 3% than in the positive control; furthermore, the IL-8 level was influenced differently by the various EOs. The present data demonstrate that EOs may modulate the immune response activated by inflammation.
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Affiliation(s)
- Maria Giovanna Ciliberti
- Department of Agriculture, Food, Natural Resources, and Engineering (DAFNE), University of Foggia, 71122 Foggia, Italy; (M.A.); (A.S.); (L.F.); (R.M.); (M.C.)
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3
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Caspe SG, Ewing DA, Livingstone M, Underwood C, Milne E, Sargison ND, Wattegedera SR, Longbottom D. The Immune Response in the Uteri and Placentae of Chlamydia abortus-Infected Ewes and Its Association with Pregnancy Outcomes. Pathogens 2023; 12:846. [PMID: 37375536 PMCID: PMC10303648 DOI: 10.3390/pathogens12060846] [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: 05/08/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
The enzootic abortion of ewes, caused by the bacterium Chlamydia abortus (C. abortus), is one of the main causes of abortion in sheep. There are multiple contributory factors, including chlamydial growth, host immune response, and hormonal balance, that result in different pregnancy outcomes, such as abortion, the birth of weak lambs that may die, or healthy lambs. This study aimed to determine the relationship between phenotypical patterns of immune cell infiltration and different pregnancy outcomes in twin-bearing sheep (both lambs born dead; one alive and one dead; both alive) when experimentally infected with C. abortus. Both the sheep uteri and placentae were collected after parturition. All samples were analysed for specific immune cell features, including cell surface antigens and the T-regulatory (Treg) cell-associated transcription factor and cytokines, by immunohistochemistry and in situ hybridisation. Some of these immunological antigens were evaluated in ovine reproductive tissues for the first time. Differential patterns of T helper/Treg cells revealed significant group effects in the placentae. It suggests the potential role that the balance of lymphocyte subsets may play in affecting different pregnancy outcomes in C. abortus-infected sheep. The present study provides novel detailed information about the immune responses observed at the maternofoetal interface in sheep at the time of pre-term abortion or lambing.
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Affiliation(s)
- Sergio Gaston Caspe
- Moredun Research Institute, Penicuik EH26 0PZ, UK
- Estación Experimental Mercedes, Instituto Nacional de Tecnología Agropecuaria (INTA), Corrientes W3400, Argentina
| | | | | | | | - Elspeth Milne
- Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH10 5HF, UK
| | - Neil Donald Sargison
- Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH10 5HF, UK
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4
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Ciliberti MG, Francavilla M, Albenzio M, Inghese C, Santillo A, Sevi A, Caroprese M. Green extraction of bioactive compounds from wine lees and their bio-responses on immune modulation using in vitro sheep model. J Dairy Sci 2022; 105:4335-4353. [PMID: 35307182 DOI: 10.3168/jds.2021-21098] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 01/24/2022] [Indexed: 11/19/2022]
Abstract
The objective of this study was to apply microwave-assisted extraction using green solvents starting from 3 different wine (white, rosé, and red) lees and to test their bio-response on sheep peripheral blood mononuclear cells proliferation, Bax/Bcl-2 ratio, and cytokines secretion. Wine lees (WL) of local organic farming from white wine, produced with Trebbiano cultivar, rosé and red wine, made with Nero di Troia cultivar, were collected. The WL were subjected to microwave-assisted extraction using 2 green solvents (water and ethanol) in 3 different combinations (water; water/ethanol 1:1 vol/vol; ethanol) with a dry matter-to-solvent ratio of 1:40 (wt/vol) at 4 temperature levels: 50, 100, 150, and 200°C. Sodium carbonate Na2CO3 (2 mmol/g of dry weight of lees) was used for increasing the polyphenol extraction yield. A total number of 6 extracts, 2 for each kind of WL investigated, according to their total phenolic content and in vitro antioxidant capacity, were selected to be tested on sheep peripheral blood mononuclear cells, as an animal model. All the WL extracts demonstrated a strong antiproliferative action. On the contrary, the cytokines' profile was mainly dependent on the different winemaking derived WL and the extraction solvent combination procedures. Red WL extract obtained by a combination of water/Na2CO3 and tested at 0.8 mg/mL, resulted in an increase of both IL-6 secretion and Bax/Bcl-2 ratio. Data from the present study demonstrated that WL extracts derived from different winemaking and solvent extraction could have a bimodal action on control of inflammatory mediated damage and highlighted the importance for further studies aimed at applying the biorefinery process on by-products to increase their economic value and exploit new derived bioactive compound.
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Affiliation(s)
- M G Ciliberti
- Department of Agriculture, Food, Natural Resources, and Engineering (DAFNE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy.
| | - M Francavilla
- Department of Agriculture, Food, Natural Resources, and Engineering (DAFNE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy; STAR Facility Centre, Department of Agriculture, Food, Natural Resources and Engineering (DAFNE), University of Foggia, Via Napoli 25, 71122 Foggia, Italy
| | - M Albenzio
- Department of Agriculture, Food, Natural Resources, and Engineering (DAFNE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - C Inghese
- Nutritionist, San Severo, 71016 Foggia, Italy
| | - A Santillo
- Department of Agriculture, Food, Natural Resources, and Engineering (DAFNE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - A Sevi
- Department of Agriculture, Food, Natural Resources, and Engineering (DAFNE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - M Caroprese
- Department of Agriculture, Food, Natural Resources, and Engineering (DAFNE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
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5
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Heat stress effects on sheep: Are hair sheep more heat resistant? Theriogenology 2020; 155:157-167. [PMID: 32679441 DOI: 10.1016/j.theriogenology.2020.05.047] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/28/2020] [Accepted: 05/30/2020] [Indexed: 12/19/2022]
Abstract
Climatic variables can trigger physiological, biochemical, haematological and hormonal alterations that influence the maintenance of homeothermy and can affect production and productivity in sheep. Different mechanisms are responsible for tolerance to heat stress (HS) including coat and skin colour, body size, fat distribution, physiological reactions and not just coat type (hair/wool). This review looks at physical, physiological, molecular and genetic aspects of heat tolerance in sheep and how they affect hair and wool sheep. We propose that it is the adaptation to hot environments and not the type of coat (wool/hair) itself that determines the capacity of the resistance of the animal to HS, due to modifications in essential pathways such as energy metabolism, physiological responses and body size. When studied in similar environments, commercial wool breeds tend to show higher heat stress, but hair breeds tend not to differ from wool breeds that are adapted to hot environments.
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6
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Wattegedera SR, Livingstone M, Maley S, Rocchi M, Lee S, Pang Y, Wheelhouse NM, Aitchison K, Palarea-Albaladejo J, Buxton D, Longbottom D, Entrican G. Defining immune correlates during latent and active chlamydial infection in sheep. Vet Res 2020; 51:75. [PMID: 32487248 PMCID: PMC7268686 DOI: 10.1186/s13567-020-00798-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 05/11/2020] [Indexed: 12/31/2022] Open
Abstract
Ovine enzootic abortion (OEA) caused by the obligate intracellular bacterial pathogen Chlamydia abortus (C. abortus), is an endemic disease in most sheep-rearing countries worldwide. Following infection, C. abortus establishes a complex host-pathogen interaction with a latent phase in non-pregnant sheep followed by an active disease phase in the placenta during pregnancy leading to OEA. Improved knowledge of the host-pathogen interactions at these different phases of disease will accelerate the development of new diagnostic tests and vaccines to control OEA. Current evidence indicates that cellular immunity is essential for controlling C. abortus infection. We have previously described a model of mucosal (intranasal) infection of non-pregnant sheep with C. abortus that replicates the latent and active phases of OEA. We have investigated antigen-specific recall responses of peripheral blood mononuclear cells (PBMC) in sheep infected with C. abortus via the intranasal route to determine how these change during the latent and active phases of disease. By analysing cytokines associated with the major CD4+ve Thelper (Th) cell subsets (Interferon-gamma (IFN-γ)/Th1; Interleukin (IL)-4/Th2; IL-17A/Th17; IL-10/Tregulatory), we show that there is selective activation of PBMC producing IFN-γ and/or IL-10 during the latent phase following infection. These cytokines are also elevated during the active disease phase and while they are produced by sheep that are protected from OEA, they are also produced by sheep that abort, highlighting the difficulties in finding specific cellular immunological correlates of protection for complex intracellular pathogens.
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Affiliation(s)
- Sean R. Wattegedera
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
| | - Morag Livingstone
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
| | - Stephen Maley
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
| | - Mara Rocchi
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
| | - Susan Lee
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
| | - Yvonne Pang
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
| | - Nick M. Wheelhouse
- School of Applied Sciences, Napier University, Edinburgh, Scotland EH11 4BN UK
| | - Kevin Aitchison
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
| | - Javier Palarea-Albaladejo
- Biomathematics and Statistics Scotland, JCMB, The King’s Buildings, Peter Guthrie Tait Road, Edinburgh, Scotland EH9 3FD UK
| | - David Buxton
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
| | - David Longbottom
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
| | - Gary Entrican
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland EH26 0PZ UK
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, Scotland EH25 9RG UK
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7
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Mailybayeva A, Ryskeldinova S, Zinina N, Zhou EM, Renukaradhya GJ, Tabynov K. Evaluation of Duration of Immunogenicity and Protective Efficacy of Improved Influenza Viral Vector-Based Brucella abortus Vaccine Against Brucella melitensis Infection in Sheep and Goats. Front Vet Sci 2020; 7:58. [PMID: 32175335 PMCID: PMC7056664 DOI: 10.3389/fvets.2020.00058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/23/2020] [Indexed: 11/30/2022] Open
Abstract
In this study, we first evaluated the duration of a protective immune response against Brucella melitensis infection in non-pregnant sheep and goats immunized with an improved (by vaccine formulation and route of administration) commercial Brucella abortus vaccine based on influenza viral vectors expressing Brucella immunodominant Omp16, L7/L12, Omp19, or Cu-Zn superoxide dismutase (SOD) proteins (Flu-BA_Omp19-SOD). Sheep and goats in the vaccinated group were immunized thrice concurrently via the subcutaneous and conjunctival routes of administration at an interval of 21 days. Animals in the control group were administered with 20% Montanide Gel01 adjuvant in phosphate-buffered saline in the same way. We showed that the Flu-BA_Omp19-SOD vaccine in sheep and goats induces antigen-specific Th1-biased [immunoglobulin G2a (IgG2a) over IgG1] antibody response and T-cell and interferon γ responses lasting over a period of 1 month post–last vaccination (PLV). The levels of protection against B. melitensis 16M infection (vaccination efficacy) in vaccinated sheep for a period of 6 months were 0–20% and in goats 20–40% compared to control challenge group. But the severity of B. melitensis 16M infection in the Flu-BA_Omp19-SOD–vaccinated sheep and goats during the entire period of observation revealed the infection index (P = 0.001–P < 0.0001) and Brucella colonization in lymph nodes and organs (P = 0.04–P < 0.0001) were significantly lower than those in the control group. To conclude, the Flu-BA_Omp19-SOD vaccine using improved formulation and administration method in sheep and goats provides augmented antigen specific humoral and T-cell immune response lasting only for 1 month PLV and partial protection for 6 months against B. melitensis 16M infection.
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Affiliation(s)
- Aigerim Mailybayeva
- Laboratory of Infectious Disease Prevention, Research Institute for Biological Safety Problems, Gvardeiskiy, Kazakhstan
| | - Sholpan Ryskeldinova
- Laboratory of Infectious Disease Prevention, Research Institute for Biological Safety Problems, Gvardeiskiy, Kazakhstan
| | - Nadezhda Zinina
- Laboratory of Microbiology, Research Institute for Biological Safety Problems, Gvardeiskiy, Kazakhstan
| | - En-Min Zhou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Gourapura J Renukaradhya
- Food Animal Health Research Program, Department of Veterinary Preventive Medicine, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, United States
| | - Kaissar Tabynov
- Biological Safety Department, Kazakh National Agrarian University, Almaty, Kazakhstan.,General Clinical Department, Research Institute of Cardiology and Internal Medicine, Almaty, Kazakhstan
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8
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Ciliberti MG, Albenzio M, De Palo P, Santillo A, Caroprese M. Nexus Between Immune Responses and Oxidative Stress: The Role of Dietary Hydrolyzed Lignin in ex vivo Bovine Peripheral Blood Mononuclear Cell Response. Front Vet Sci 2020; 7:9. [PMID: 32154273 PMCID: PMC7045060 DOI: 10.3389/fvets.2020.00009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/08/2020] [Indexed: 01/23/2023] Open
Abstract
The control of immune responses is particularly critical when an increase of oxidative stress occurs, causing an impairment of immune cell response and a condition of systemic inflammation, named oxinflammation. Nutritional strategies based on the use in the diet of phytochemicals extracted from plants, rich in antioxidants, could help restore the antioxidant/oxidant balance and obtain a modulation of immune response. Lignin represents a valuable resource of phenolic compounds, which are characterized by a corroborated antioxidant effect. To date, there are no studies reporting the effects of lignin in the diet on immune responses and oxidative stress in ruminants. The objective of the present experiment was the evaluation of the dietary inclusion of Pinus taeda hydrolyzed lignin on the ex vivo immune responses and oxidative stress biomarkers by peripheral blood mononuclear cells (PBMCs) isolated from beef steers. In order to test the effect during oxidative stress exposition, cells were treated with hydrogen peroxide (H2O2). The proliferation test and the viability assay were carried out on cells, whereas, on supernatants, the cytokine profile and the oxidative stress biomarkers were evaluated. The dietary inclusion with P. taeda hydrolyzed lignin resulted in cytoprotection after H2O2 exposition, increasing the number of viable monocytes and decreasing the reactive oxygen/nitrogen species production in supernatants. The cytokine profile indicated the modulatory role of hydrolyzed lignin on immune response, with a concomitant decrease of TNF-α and increase of IL-8 production, which are strictly connected with monocyte activation and antioxidant response pathway. These results demonstrated that hydrolyzed lignin may provide a modulation of oxidative stress and inflammatory response in PBMCs; thus, the P. taeda hydrolyzed lignin could be suggested as an innovative phytochemical in ruminant feed.
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Affiliation(s)
- Maria Giovanna Ciliberti
- Department of Sciences of Agriculture, Food and Environment, University of Foggia, Foggia, Italy
| | - Marzia Albenzio
- Department of Sciences of Agriculture, Food and Environment, University of Foggia, Foggia, Italy
| | - Pasquale De Palo
- Department of Veterinary Medicine, University of Bari A. Moro, Bari, Italy
| | - Antonella Santillo
- Department of Sciences of Agriculture, Food and Environment, University of Foggia, Foggia, Italy
| | - Mariangela Caroprese
- Department of Sciences of Agriculture, Food and Environment, University of Foggia, Foggia, Italy
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9
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Guzman E, Pujol M, Ribeca P, Montoya M. Bovine Derived in vitro Cultures Generate Heterogeneous Populations of Antigen Presenting Cells. Front Immunol 2019; 10:612. [PMID: 30984187 PMCID: PMC6450137 DOI: 10.3389/fimmu.2019.00612] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 03/07/2019] [Indexed: 12/22/2022] Open
Abstract
Antigen presenting cells (APC) of the mononuclear phagocytic system include dendritic cells (DCs) and macrophages (Macs) which are essential mediators of innate and adaptive immune responses. Many of the biological functions attributed to these cell subsets have been elucidated using models that utilize in vitro-matured cells derived from common progenitors. However, it has recently been shown that monocyte culture systems generate heterogeneous populations of cells, DCs, and Macs. In light of these findings, we analyzed the most commonly used bovine in vitro-derived APC models and compared them to bona fide DCs. Here, we show that bovine monocyte-derived DCs and Macs can be differentiated on the basis of CD11c and MHC class II (MHCII) expression and that in vitro conditions generate a heterologous group of both DCs and Macs with defined and specific biological activities. In addition, skin-migrating macrophages present in the bovine afferent lymph were identified and phenotyped for the first time. RNA sequencing analyses showed that these monophagocytic cells have distinct transcriptomic profiles similar to those described in other species. These results have important implications for the interpretation of data obtained using in vitro systems.
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Affiliation(s)
| | - Myriam Pujol
- Doctoral Program in Agronomy Forestry and Veterinary Sciences, Universidad de Chile, Santiago, Chile
| | | | - Maria Montoya
- The Pirbright Institute, Woking, United Kingdom.,Centro de Investigaciones Biológicas (CIB - CSIC), Madrid, Spain
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10
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Ciliberti MG, Albenzio M, Francavilla M, Neglia G, Esposito L, Caroprese M. Extracts from Microalga Chlorella sorokiniana Exert an Anti-Proliferative Effect and Modulate Cytokines in Sheep Peripheral Blood Mononuclear Cells. Animals (Basel) 2019; 9:E45. [PMID: 30704147 PMCID: PMC6406596 DOI: 10.3390/ani9020045] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/1970] [Accepted: 01/24/2019] [Indexed: 02/07/2023] Open
Abstract
The objective of this experiment was to study the effects of the unsaponified fraction (UP), the acetylated unsaponified fraction (AUP), and the total lipid fraction (TL) extracted and purified from Chlorella sorokiniana (CS) on the proliferation and cytokine profile of sheep peripheral blood mononuclear cells (PBMCs). Cells were cultured with 0.4 mg/mL and 0.8 mg/mL concentrations of each extract (UP, AUP, and TL fractions) and activated with 5 μg/mL concanavalin A (ConA) and 1 μg/mL lipopolysaccharide (LPS) at 37 °C for 24 h. PBMCs cultured with ConA and LPS represented the stimulated cells (SC), and PBMCs without ConA and LPS represented the unstimulated cells (USC). Cell-free supernatants were collected to determine IL-10, IL-1β, and IL-6 secretions; on cells, measurement of proliferation was performed. All the extracts tested significantly decreased the cell proliferation; in particular, the UP fraction at 0.4 mg/mL showed the lowest proliferative response. Furthermore, at 0.8 mg/mL, the UP fraction enhanced IL-10 secretion. On the contrary, the TL fraction at 0.4 mg/mL induced an increase in IL-10, IL-6, and, to a lesser extent, IL-1β secretions by cells. The AUP fraction did not change cytokine secretion. The results demonstrated that CS extracts could be useful ingredients in animal feed in order to minimize the use of antibiotics by modulating cell proliferation and cytokine response.
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Affiliation(s)
- Maria Giovanna Ciliberti
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli 25, 71121 Foggia, Italy.
| | - Marzia Albenzio
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli 25, 71121 Foggia, Italy.
| | - Matteo Francavilla
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli 25, 71121 Foggia, Italy.
| | - Gianluca Neglia
- Department of Veterinary Medicine and Animal Production, Federico II University, V. F. Delpino 1, 80137 Naples, Italy.
| | - Luigi Esposito
- Department of Veterinary Medicine and Animal Production, Federico II University, V. F. Delpino 1, 80137 Naples, Italy.
| | - Mariangela Caroprese
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli 25, 71121 Foggia, Italy.
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11
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Wattegedera SR, Doull LE, Goncheva MI, Wheelhouse NM, Watson DM, Pearce J, Benavides J, Palarea-Albaladejo J, McInnes CJ, Ballingall K, Entrican G. Immunological Homeostasis at the Ovine Placenta May Reflect the Degree of Maternal Fetal Interaction. Front Immunol 2019; 9:3025. [PMID: 30687304 PMCID: PMC6334339 DOI: 10.3389/fimmu.2018.03025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/06/2018] [Indexed: 01/07/2023] Open
Abstract
Successful mammalian pregnancies are a result of complex physiological, endocrinological, and immunological processes that combine to create an environment where the mother is tolerant to the semi-allogeneic fetus. Our knowledge of the mechanisms that contribute to maternal tolerance is derived mainly from human and murine studies of haemochorial placentation. However, as this is the most invasive type of placentation it cannot be assumed that identical mechanisms apply to the less invasive epitheliochorial placentation found in other species such as ruminants. Here, we examine three features associated with reproductive immune regulation in a transformed ovine trophoblast cell line and ex-vivo ovine reproductive tissues collected at term, namely: major histocompatibility complex (MHC) expression, Indoleamine 2,3 dioxygenase-1 (IDO-1) expression, and Natural Killer (NK) cell infiltration. High levels of MHC class I protein expression were detected at the surface of the trophoblast cell line using a pan-MHC class I specific monoclonal antibody. The majority of MHC class I transcripts isolated from the cell line clustered with classical MHC alleles. Transcriptional analysis of placental tissues identified only classical MHC class I transcripts. We found no evidence of constitutive transcription of IDO-1 in either the trophoblast cell line or placental tissues. Ex-vivo tissues collected from the materno-fetal interface were negative for cells expressing NKp46/NCR1. Collectively, these observations suggest that the relatively non-invasive synepitheliochorial placentation found in sheep has a more limited requirement for local immunoregulation compared to the more invasive haemochorial placentation of primates and rodents.
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Affiliation(s)
- Sean R Wattegedera
- Vaccines Department, Moredun Research Institute, Penicuik, United Kingdom
| | - Laura E Doull
- Centre for Dementia Prevention, University of Edinburgh, Edinburgh, United Kingdom
| | - Mariya I Goncheva
- Department of Microbiology and Immunology, University of Western Ontario, London, ON, Canada
| | | | | | - Julian Pearce
- University College London Hospital, London, United Kingdom
| | | | | | - Colin J McInnes
- Vaccines Department, Moredun Research Institute, Penicuik, United Kingdom
| | - Keith Ballingall
- Vaccines Department, Moredun Research Institute, Penicuik, United Kingdom
| | - Gary Entrican
- Vaccines Department, Moredun Research Institute, Penicuik, United Kingdom.,The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, United Kingdom
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12
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Caroprese M, Ciliberti M, De Palo P, Santillo A, Sevi A, Albenzio M. Glucocorticoid effects on sheep peripheral blood mononuclear cell proliferation and cytokine production under in vitro hyperthermia. J Dairy Sci 2018; 101:8544-8551. [DOI: 10.3168/jds.2018-14471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 05/15/2018] [Indexed: 12/28/2022]
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13
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Nefefe T, Liebenberg J, van Kleef M, Steyn HC, Pretorius A. Innate immune transcriptomic evaluation of PBMC isolated from sheep after infection with E. ruminantium Welgevonden strain. Mol Immunol 2017; 91:238-248. [PMID: 28988038 DOI: 10.1016/j.molimm.2017.09.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 08/18/2017] [Accepted: 09/27/2017] [Indexed: 12/30/2022]
Abstract
Heartwater is a tick-borne non-infectious fatal disease of wild and domestic ruminants caused by the bacterium Ehrlichia ruminantium, transmitted by Amblyomma ticks. Although there is evidence that interferon-gamma (IFN-γ) controls E. ruminantium growth and that cellular immune responses could be protective, an effective recombinant vaccine for this disease is lacking. An overall analysis of which immune pathways are up- or down-regulated in sheep peripheral blood mononuclear cells is expected to lead to a better understanding of the global immune response of sheep to E. ruminantium infection. Therefore, a systems biology oriented approach following the infection with E. ruminantium was investigated from peripheral blood mononuclear cells to aid recombinant vaccine development. In this study, heartwater naïve sheep were infected and challenged by allowing E. ruminantium infected ticks to feed on them. After primary infection, all the animals were treated with antibiotic during the resulting febrile response. Blood was collected daily for E. ruminantium detection by qPCR (pCS20 assay). The pCS20 assay only detected the pathogen in the blood one day prior to and during the febrile stage of infection confirming infection of the sheep. IFN-γ real-time PCR indicated that this cytokine was expressed at specific time points: post infection, during the febrile stage of the disease and after challenge. These were used as a guide to select samples for transcriptome sequencing. This paper focuses on transcripts that are associated with innate activating pathways that were identified to be up- and down-regulated after primary infection and the subsequent challenge. These included the CD14 monocyte marker, toll-like receptor (TLR), nod-like receptor, chemokine, cytosolic and cytokine-cytokine interaction receptor pathways. In particular, TLR4, TLR9 and CD14 were activated together with DNA detection pathways, suggesting that vaccine formulations may be improved if CpG motifs and lipopolysaccharides are included. This data indicates that innate immune activation, perhaps by using adjuvants, should be an important component for consideration during future heartwater recombinant vaccine development.
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Affiliation(s)
- T Nefefe
- Agricultural Research Council - Onderstepoort Veterinary Research, Private Bag X5, Onderstepoort, 0110, South Africa; Department of Veterinary Tropical Diseases, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa.
| | - J Liebenberg
- Agricultural Research Council - Onderstepoort Veterinary Research, Private Bag X5, Onderstepoort, 0110, South Africa
| | - M van Kleef
- Agricultural Research Council - Onderstepoort Veterinary Research, Private Bag X5, Onderstepoort, 0110, South Africa; Department of Veterinary Tropical Diseases, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa
| | - H C Steyn
- Agricultural Research Council - Onderstepoort Veterinary Research, Private Bag X5, Onderstepoort, 0110, South Africa
| | - A Pretorius
- Agricultural Research Council - Onderstepoort Veterinary Research, Private Bag X5, Onderstepoort, 0110, South Africa; Department of Veterinary Tropical Diseases, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa
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14
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Ciliberti MG, Francavilla M, Intini S, Albenzio M, Marino R, Santillo A, Caroprese M. Phytosterols from Dunaliella tertiolecta Reduce Cell Proliferation in Sheep Fed Flaxseed during Post Partum. Mar Drugs 2017; 15:md15070216. [PMID: 28684702 PMCID: PMC5532658 DOI: 10.3390/md15070216] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 06/16/2017] [Accepted: 06/30/2017] [Indexed: 02/03/2023] Open
Abstract
The post partum period is characterized by immunosuppression and increased disease susceptibility. Both phytosterols from microalga Dunaniella tertiolecta and dietary supplementation with n-3 polyunsaturated fatty acids (PUFA) influence cell proliferation and cytokine release during inflammation. The objective of this paper was the evaluation of the effects of physterols, extracted and purified from D. tertiolecta, on the in vitro immune responses of ewes supplemented with flaxseed during post partum. Twenty Comisana parturient ewes were divided in two balanced groups, and supplemented with flaxseed (FS, 250 g/day) or fed with a conventional diet (CON). Blood samples (15 mL) were collected for five weeks, starting from lambing, in order to isolate peripheral blood mononuclear cells (PBMC). Stimulated PBMC were treated with a total sterols fraction from D. tertiolecta (TS), a mix of ergosterol and 7-dehydroporiferasterol (purified extract, PE), and a mix of acetylated ergosterol and 7-dehydroporiferasterol (acetylated purified extract, AcPE), extracted and purified from D. tertiolecta at two concentrations (0.4 and 0.8 mg/mL). Results of the experiment demonstrated that n-3 PUFA from flaxseed induced an anti-inflammatory cytokine profile, with an increase of both IL-10, IL-6 and a decrease of IL-1β. TS, PE, and AcPE purified from D. tertiolecta showed an anti-proliferative effect on sheep PBMC regardless their chemical composition and concentration.
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Affiliation(s)
- Maria Giovanna Ciliberti
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli, 25-71121 Foggia, Italy.
| | - Matteo Francavilla
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli, 25-71121 Foggia, Italy.
- Institute of Marine Science, National Research Council, Arsenale Castello, 2737/F, 30122 Venice, Italy.
| | - Simona Intini
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli, 25-71121 Foggia, Italy.
| | - Marzia Albenzio
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli, 25-71121 Foggia, Italy.
| | - Rosaria Marino
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli, 25-71121 Foggia, Italy.
| | - Antonella Santillo
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli, 25-71121 Foggia, Italy.
| | - Mariangela Caroprese
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli, 25-71121 Foggia, Italy.
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15
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Wattegedera SR, Corripio-Miyar Y, Pang Y, Frew D, McNeilly TN, Palarea-Albaladejo J, McInnes CJ, Hope JC, Glass EJ, Entrican G. Enhancing the toolbox to study IL-17A in cattle and sheep. Vet Res 2017; 48:20. [PMID: 28388924 PMCID: PMC5385008 DOI: 10.1186/s13567-017-0426-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/13/2017] [Indexed: 12/24/2022] Open
Abstract
The development of methods to detect cytokine expression by T cell subsets in ruminants is fundamental to strategic development of new livestock vaccines for prevention of infectious diseases. It has been possible to detect T cell expression of IFN-γ, IL-4 and IL-10 in ruminants for many years but methods to detect expression of IL-17A are relatively limited. To address this gap in capability we have cloned bovine and ovine IL-17A cDNAs and expressed biologically-active recombinant proteins in Chinese Hamster Ovary (CHO) cells. We used the transfected CHO cells to screen commercially-available antibodies for their ability to detect IL-17A expression intracellularly and in culture supernates. We demonstrate that an ELISA for bovine IL-17A detects native ovine IL-17A. Moreover, the constituent polyclonal antibodies (pabs) in the ELISA were used to enumerate peripheral blood mononuclear cells (PBMC) expressing IL-17A from cattle and sheep by ELISpot. We identified two monoclonal antibodies (mabs) that detect recombinant intracellular IL-17A in CHO cells by flow cytometry. One of these mabs was used to detect native intracellular IL-17A expression in PBMC in conjunction with cell surface phenotyping mabs [CD4+ve, CD8+ve and Workshop Cluster 1 (WC-1)+ve gamma-delta (γδ)] we show that distinct T cell subsets in cattle (defined as CD4+ve, CD8+ve or WC-1+ve) and sheep (defined as CD4+ve or WC-1+ve) can express IL-17A following activation. These novel techniques provide a solid basis to investigate IL-17A expression and define specific CD4+ve T cell subset activation in ruminants.
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Affiliation(s)
- Sean R Wattegedera
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland, EH26 0PZ, UK.
| | - Yolanda Corripio-Miyar
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland, EH26 0PZ, UK.,The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
| | - Yvonne Pang
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland, EH26 0PZ, UK
| | - David Frew
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland, EH26 0PZ, UK
| | - Tom N McNeilly
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland, EH26 0PZ, UK
| | - Javier Palarea-Albaladejo
- Biomathematics and Statistics Scotland, JCMB, The King's Buildings, Peter Guthrie Tait Road, Edinburgh, Scotland, EH9 3FD, UK
| | - Colin J McInnes
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland, EH26 0PZ, UK
| | - Jayne C Hope
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
| | - Elizabeth J Glass
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
| | - Gary Entrican
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Scotland, EH26 0PZ, UK.,The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
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16
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Lacasta D, Figueras L, Bueso J, De las Heras M, Ramos J, Ferrer L, González J, Ruíz de Arcaute M, Ortín A, Marteles D, Navarro T, Fernández A. Experimental infection with Salmonella enterica subsp. diarizonae serotype 61:k:1,5,(7) in sheep: Study of cell mediated immune response. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2017.01.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Inhibition of Antigen-Specific and Nonspecific Stimulation of Bovine T and B Cells by Lymphostatin from Attaching and Effacing Escherichia coli. Infect Immun 2017; 85:IAI.00845-16. [PMID: 27920212 PMCID: PMC5278176 DOI: 10.1128/iai.00845-16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 11/23/2016] [Indexed: 11/20/2022] Open
Abstract
Enterohemorrhagic Escherichia coli (EHEC) and enteropathogenic E. coli (EPEC) are enteric bacterial pathogens of worldwide importance. Most EPEC and non-O157 EHEC strains express lymphostatin (also known as LifA), a chromosomally encoded 365-kDa protein. We previously demonstrated that lymphostatin is a putative glycosyltransferase that is important in intestinal colonization of cattle by EHEC serogroup O5, O111, and O26 strains. However, the nature and consequences of the interaction between lymphostatin and immune cells from the bovine host are ill defined. Using purified recombinant protein, we demonstrated that lymphostatin inhibits mitogen-activated proliferation of bovine T cells and, to a lesser extent, proliferation of cytokine-stimulated B cells, but not NK cells. It broadly affected the T cell compartment, inhibiting all cell subsets (CD4, CD8, WC-1, and γδ T cell receptor [γδ-TCR]) and cytokines examined (interleukin 2 [IL-2], IL-4, IL-10, IL-17A, and gamma interferon [IFN-γ]) and rendered T cells refractory to mitogen for a least 18 h after transient exposure. Lymphostatin was also able to inhibit proliferation of T cells stimulated by IL-2 and by antigen presentation using a Theileria-transformed cell line and autologous T cells from Theileria-infected cattle. We conclude that lymphostatin is likely to act early in T cell activation, as stimulation of T cells with concanavalin A, but not phorbol 12-myristate 13-acetate combined with ionomycin, was inhibited. Finally, a homologue of lymphostatin from E. coli O157:H7 (ToxB; L7095) was also found to possess comparable inhibitory activity against T cells, indicating a potentially conserved strategy for interference in adaptive responses by attaching and effacing E. coli.
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18
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Ciliberti MG, Albenzio M, Inghese C, Santillo A, Marino R, Sevi A, Caroprese M. Peripheral blood mononuclear cell proliferation and cytokine production in sheep as affected by cortisol level and duration of stress. J Dairy Sci 2016; 100:750-756. [PMID: 27865492 DOI: 10.3168/jds.2016-11688] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 09/25/2016] [Indexed: 12/16/2022]
Abstract
A large number of studies recognize glucocorticoids (Gc) as suppressors of inflammation; Gc exert an important role in coordinating the magnitude and duration of host immune responses. In the present in vitro investigation, we tested incremental levels of cortisol to verify the immunosuppressive or immunopermissive role of cortisol in sheep peripheral blood mononuclear cells (PBMC) after acute and chronic stress. Phytohemagglutinin (PHA)-stimulated PBMC were cultured for 24h and 96h at 37°C with 5% of CO2 and varying cortisol levels: 10 ng/mL (baseline), 100 ng/mL (physiological poststressor), and 1,000 ng/mL [hyperactivated hypothalamic-pituitary-adrenal (HPA) axis]. The cell-free supernatants were collected for determination of IL-6, IL-1β, and IL-10 by ELISA, and the bromodeoxyuridine assay was performed on cells. Physiological cortisol concentration negatively affected the levels of IL-6 secreted by PBMC, resulting in increased cell proliferation after acute stress (24h of incubation). However, physiological cortisol concentration exhibited a reduction in cell proliferation induced by increased levels of IL-6 secreted by PBMC during chronic stress (96h of incubation). The cortisol concentration representing a hyperactivated HPA axis led to a reduction in cell proliferation after acute stress, which was probably induced by the elevated IL-10 production. Our results demonstrate that in sheep the effect of Gc on the immune system was related to the magnitude and the duration of stress. In particular, cortisol levels higher than physiological concentrations suppressed cell proliferation soon after acute stress. Instead, the physiological poststressor concentration of cortisol affected the immune responses in a bidirectional manner depending on the duration of the stressor.
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Affiliation(s)
- M G Ciliberti
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - M Albenzio
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - C Inghese
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - A Santillo
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - R Marino
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - A Sevi
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - M Caroprese
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy.
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19
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Corripio-Miyar Y, Hope J, McInnes CJ, Wattegedera SR, Jensen K, Pang Y, Entrican G, Glass EJ. Phenotypic and functional analysis of monocyte populations in cattle peripheral blood identifies a subset with high endocytic and allogeneic T-cell stimulatory capacity. Vet Res 2015; 46:112. [PMID: 26407849 PMCID: PMC4582714 DOI: 10.1186/s13567-015-0246-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 08/17/2015] [Indexed: 12/22/2022] Open
Abstract
Circulating monocytes in several mammalian species can be subdivided into functionally distinct subpopulations based on differential expression of surface molecules. We confirm that bovine monocytes express CD172a and MHC class II with two distinct populations of CD14+CD16low/-CD163+ and CD14−CD16++CD163low- cells, and a more diffuse population of CD14+CD16+CD163+ cells. In contrast, ovine monocytes consisted of only a major CD14+CD16+ subset and a very low percentage of CD14−CD16++cells. The bovine subsets expressed similar levels of CD80, CD40 and CD11c molecules and mRNA encoding CD115. However, further mRNA analyses revealed that the CD14−CD16++ monocytes were CX3CR1highCCR2low whereas the major CD14+ subset was CX3CR1lowCCR2high. The former were positive for CD1b and had lower levels of CD11b and CD86 than the CD14+ monocytes. The more diffuse CD14+CD16+ population generally expressed intermediate levels of these molecules. All three populations responded to stimulation with phenol-extracted lipopolysaccharide (LPS) by producing interleukin (IL)-1β, with the CD16++ subset expressing higher levels of IL-12 and lower levels of IL-10. The CD14−CD16++ cells were more endocytic and induced greater allogeneic T cell responses compared to the other monocyte populations. Taken together the data show both similarities and differences between the classical, intermediate and non-classical definitions of monocytes as described for other mammalian species, with additional potential subpopulations. Further functional analyses of these monocyte populations may help explain inter-animal and inter-species variations to infection, inflammation and vaccination in ruminant livestock.
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Affiliation(s)
- Yolanda Corripio-Miyar
- Division of Infection & Immunity, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.
| | - Jayne Hope
- Division of Infection & Immunity, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.
| | - Colin J McInnes
- Current address: Moredun Research Institute, Pentlands Science Park, Bush Loan, Midlothian, EH26 0PZ, UK.
| | - Sean R Wattegedera
- Current address: Moredun Research Institute, Pentlands Science Park, Bush Loan, Midlothian, EH26 0PZ, UK.
| | - Kirsty Jensen
- Division of Infection & Immunity, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.
| | - Yvonne Pang
- Current address: Moredun Research Institute, Pentlands Science Park, Bush Loan, Midlothian, EH26 0PZ, UK.
| | - Gary Entrican
- Division of Infection & Immunity, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK. .,Current address: Moredun Research Institute, Pentlands Science Park, Bush Loan, Midlothian, EH26 0PZ, UK.
| | - Elizabeth J Glass
- Division of Infection & Immunity, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.
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20
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Doull L, Wattegedera SR, Longbottom D, Mwangi D, Nath M, Glass EJ, Entrican G. Late production of CXCL8 in ruminant oro-nasal turbinate cells in response to Chlamydia abortus infection. Vet Immunol Immunopathol 2015; 168:97-102. [PMID: 26342452 DOI: 10.1016/j.vetimm.2015.08.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 08/06/2015] [Accepted: 08/26/2015] [Indexed: 11/15/2022]
Abstract
Chlamydia abortus is an obligate intracellular bacterium that is an important cause of ovine abortion worldwide. There are reports of abortions in cattle, but these are very rare compared to the reported incidence in sheep. The bacterium is transmitted oro-nasally and can establish a sub-clinical infection until pregnancy, when it can invade the placenta and induce an inflammatory cascade leading to placentitis and abortion. Early host-pathogen interactions could explain differential pathogenesis and subsequent disease outcome in ruminant species. In this study, we assessed the ability of sheep and cattle oro-nasal turbinate cells to sense and respond to C. abortus infection. The cells expressed toll like receptor (TLR) 2, TLR4, nucleotide oligomerization domain (NOD) 1 and NOD-like receptor pyrin domain containing 3 (NLRP3) mRNA. In response to C. abortus infection, both ovine and bovine turbinate cells produce CXCL8 mRNA and protein late in the bacterial developmental cycle, but do not produce IL-1β or TNF-α. The UV-inactivated bacteria did not elicit a CXCL8 response, suggesting that intracellular multiplication of the bacteria is important for activating the signalling pathways. The production of innate immune cytokines from cattle and sheep turbinate cells in response to C. abortus infection was found to be largely similar.
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Affiliation(s)
- L Doull
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh EH26 0PZ, Scotland, UK; The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
| | - S R Wattegedera
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh EH26 0PZ, Scotland, UK
| | - D Longbottom
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh EH26 0PZ, Scotland, UK
| | - D Mwangi
- Zoetis, 333 Portage Street, KZO-300-385.6SE, Kalamazoo, MI 49007, USA
| | - M Nath
- Biomathematics and Statistics Scotland, JCMB, The King's Buildings, Peter Guthrie Tait Road, Edinburgh EH9 3FD, UK
| | - E J Glass
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
| | - G Entrican
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh EH26 0PZ, Scotland, UK; The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK.
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21
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Ciliberti MG, Albenzio M, Annicchiarico G, Sevi A, Muscio A, Caroprese M. Alterations in sheep peripheral blood mononuclear cell proliferation and cytokine release by polyunsaturated fatty acid supplementation in the diet under high ambient temperature. J Dairy Sci 2015; 98:872-9. [DOI: 10.3168/jds.2014-8333] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 11/05/2014] [Indexed: 11/19/2022]
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22
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Entrican G, Wattegedera SR, Griffiths DJ. Exploiting ovine immunology to improve the relevance of biomedical models. Mol Immunol 2014; 66:68-77. [PMID: 25263932 PMCID: PMC4368439 DOI: 10.1016/j.molimm.2014.09.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 08/19/2014] [Accepted: 09/01/2014] [Indexed: 12/29/2022]
Abstract
Sheep make a valuable contribution to immunology research. Lessons to be learned from studying infections in the natural host. Factors to consider when selecting biomedical models.
Animal models of human disease are important tools in many areas of biomedicine; for example, in infectious disease research and in the development of novel drugs and medical devices. Most studies involving animals use rodents, in particular congenic mice, due to the availability of a wide number of strains and the ease with which they can be genetically manipulated. The use of mouse models has led to major advances in many fields of research, in particular in immunology but despite these advances, no animal model can exactly reproduce all the features of human disease. It is increasingly becoming recognised that in many circumstances mice do not provide the best model and that alternative species may be more appropriate. Here, we describe the relative merits of sheep as biomedical models for human physiology and disease in comparison to mice, with a particular focus on reproductive and respiratory pathogens.
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Affiliation(s)
- Gary Entrican
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh EH26 0PZ, Scotland, UK.
| | - Sean R Wattegedera
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh EH26 0PZ, Scotland, UK
| | - David J Griffiths
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh EH26 0PZ, Scotland, UK
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23
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Caroprese M, Ciliberti MG, Annicchiarico G, Albenzio M, Muscio A, Sevi A. Hypothalamic-pituitary-adrenal axis activation and immune regulation in heat-stressed sheep after supplementation with polyunsaturated fatty acids. J Dairy Sci 2014; 97:4247-58. [PMID: 24792803 DOI: 10.3168/jds.2013-7696] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 03/16/2014] [Indexed: 01/10/2024]
Abstract
The aim of this study was to assess the effects of supplementation with polyunsaturated fatty acids from different sources on immune regulation and hypothalamic-pituitary-adrenal (HPA) axis activation in heat-stressed sheep. The experiment was carried out during the summer 2012. Thirty-two Comisana ewes were divided into 4 groups (8 sheep/group): (1) supplemented with whole flaxseed (FS); (2) supplemented with Ascophyllum nodosum (AG); (3) supplemented with a combination of flaxseed and A. nodosum (FS+AG); and (4) control (C; no supplementation). On d 22 of the experiment, cortisol concentrations in sheep blood were measured after an injection of ACTH. Cellular immune response was evaluated by intradermic injection of phytohemagglutinin (PHA) at 0, 15, and 30 d of the trial. Humoral response to ovalbumin (OVA) was measured at 0, 15, and 30 d. At 0, 15, and 30 d of the experiment, blood samples were collected from each ewe to determine production of T-helper (Th)1 cytokines (IL-12 and IFN-γ), and Th2 cytokines (IL-10, IL-4, IL-13), and concentrations of heat shock proteins (HSP) 70 and 90. Ewes supplemented with flaxseed alone had greater cortisol concentrations and a longer-lasting cell-mediated immune response compared with ewes in the control and other groups. Anti-OVA IgG concentrations increased in all groups throughout the trial, even though ewes in the FS+AG group had the lowest anti-OVA IgG concentrations at 15 d. The level of IL-10 increased in all groups throughout the experiment; the FS+AG group had the lowest IL-13 concentration at 15 and 30 d. The concentration of HSP 70 increased in AG ewes at the end of the experiment and decreased in FS ewes, whereas that of HSP 90 increased in FS ewes compared with FS+AG ewes. Flaxseed supplementation was found to influence in vivo HPA activation in heat-stressed sheep, resulting in increased cortisol concentrations, probably to meet increased energy demand for thermoregulation. Flaxseed supplementation also supported Th1 response via a complex cross-talk between IL-10, IL-12, and IFN-γ production.
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Affiliation(s)
- M Caroprese
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy.
| | - M G Ciliberti
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - G Annicchiarico
- Council for Research and Experimentation in Agriculture, 71020 Foggia, Italy
| | - M Albenzio
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - A Muscio
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - A Sevi
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
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Castaño P, Fuertes M, Ferre I, Fernández M, Ferreras MDC, Moreno-Gonzalo J, González-Lanza C, Katzer F, Regidor-Cerrillo J, Ortega-Mora LM, Pérez V, Benavides J. Placental thrombosis in acute phase abortions during experimental Toxoplasma gondii infection in sheep. Vet Res 2014; 45:9. [PMID: 24475786 PMCID: PMC3931317 DOI: 10.1186/1297-9716-45-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 01/16/2014] [Indexed: 02/08/2023] Open
Abstract
After oral administration of ewes during mid gestation with 2000 freshly prepared sporulated oocysts of T. gondii isolate M4, abortions occurred between days 7 and 11 in 91.6% of pregnant and infected ewes. Afterwards, a further infection was carried out at late gestation in another group of sheep with 500 sporulated oocysts. Abortions happened again between days 9 and 11 post infection (pi) in 58.3% of the infected ewes. Classically, abortions in natural and experimental ovine toxoplasmosis usually occur one month after infection. Few experimental studies have reported the so-called acute phase abortions as early as 7 to 14 days after oral inoculation of oocysts, and pyrexia was proposed to be responsible for abortion, although the underline mechanism was not elucidated. In the present study, all placentas analysed from ewes suffering acute phase abortions showed infarcts and thrombosis in the caruncullar villi of the placentomes and ischemic lesions (periventricular leukomalacia) in the brain of some foetuses. The parasite was identified by PCR in samples from some placentomes of only one sheep, and no antigen was detected by immunohistochemical labelling. These findings suggest that the vascular lesions found in the placenta, and the consequent hypoxic damage to the foetus, could be associated to the occurrence of acute phase abortions. Although the pathogenesis of these lesions remains to be determined, the infectious dose or virulence of the isolate may play a role in their development.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Julio Benavides
- Departamento de Sanidad Animal, Instituto de Ganadería de Montaña (CSIC-ULE), Grulleros, 24346 León, Spain.
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25
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McNeilly TN, Rocchi M, Bartley Y, Brown JK, Frew D, Longhi C, McLean L, McIntyre J, Nisbet AJ, Wattegedera S, Huntley JF, Matthews JB. Suppression of ovine lymphocyte activation by Teladorsagia circumcincta larval excretory-secretory products. Vet Res 2013; 44:70. [PMID: 23964850 PMCID: PMC3848371 DOI: 10.1186/1297-9716-44-70] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 07/29/2013] [Indexed: 11/20/2022] Open
Abstract
Teladorsagia circumcincta is an important pathogenic nematode of sheep. It has been demonstrated previously that stimulation of murine T lymphocytes with excretory-secretory (ES) products derived from fourth stage larvae of T. circumcincta (Tci-L4-ES) results in de novo expression of Foxp3, a transcription factor intimately involved in regulatory T cell function. In the current study, Foxp3+ T cell responses in the abomasum and the effects of Tci-L4-ES on ovine peripheral blood mononuclear cells (PBMC) following T. circumcincta infection were investigated. T. circumcincta infection resulted in a significant increase in numbers of abomasal Foxp3+ T cells, but not an increase in the proportion of T cells expressing Foxp3. Unlike in mice, Tci-L4-ES was incapable of inducing T cell Foxp3 expression but instead suppressed mitogen-induced and antigen-specific activation and proliferation of ovine PBMC in vitro. This effect was heat labile, suggesting that it is mediated by protein(s). Suppression was associated with up-regulation of interleukin-10 (IL-10) mRNA, and specific monoclonal antibody neutralisation of IL-10 resulted in a 50% reduction in suppression, indicating involvement of the IL-10 signaling pathway. Suppression was significantly reduced in PBMC isolated from T. circumcincta infected vs. helminth-naïve lambs, and this reduction in suppression was associated with an increase in Tci-L4-ES antigen-specific T cells within the PBMC. In conclusion, we have identified a mechanism by which T. circumcincta may modulate the host adaptive immune response, potentially assisting survival of the parasite within the host. However, the impact of Tci-L4-ES-mediated lymphocyte suppression during T. circumcincta infection remains to be determined.
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Affiliation(s)
- Tom N McNeilly
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, UK.
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26
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Longbottom D, Livingstone M, Maley S, van der Zon A, Rocchi M, Wilson K, Wheelhouse N, Dagleish M, Aitchison K, Wattegedera S, Nath M, Entrican G, Buxton D. Intranasal infection with Chlamydia abortus induces dose-dependent latency and abortion in sheep. PLoS One 2013; 8:e57950. [PMID: 23469113 PMCID: PMC3585262 DOI: 10.1371/journal.pone.0057950] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 01/27/2013] [Indexed: 02/07/2023] Open
Abstract
Background Latency is a key feature of the animal pathogen Chlamydia abortus, where infection remains inapparent in the non-pregnant animal and only becomes evident during a subsequent pregnancy. Often the first sign that an animal is infected is abortion occurring late in gestation. Despite this, little is understood of the underlying mechanisms that control latency or the recrudescence of infection that occurs during subsequent pregnancy. The aim of this study was to develop an experimental model of latency by mimicking the natural route of infection through the intranasal inoculation of non-pregnant sheep with C. abortus. Methodology/Principal Findings Three groups of sheep (groups 1, 2 and 3) were experimentally infected with different doses of C. abortus (5×103, 5×105 and 5×107 inclusion forming units (IFU), respectively) prior to mating and monitored over 2 breeding cycles for clinical, microbiological, pathological, immunological and serological outcomes. Two further groups received either negative control inoculum (group 4a,b) or were inoculated subcutaneously on day 70 of gestation with 2×106 IFU C. abortus (group 5). Animals in groups 1, 2 and 5 experienced an abortion rate of 50–67%, while only one animal aborted in group 3 and none in group 4a,b. Pathological, microbiological, immunological and serological analyses support the view that the maternal protective immune response is influenced by initial exposure to the bacterium. Conclusions/Significance The results show that intranasal administration of non-pregnant sheep with a low/medium dose of C. abortus results in a latent infection that leads in a subsequent pregnancy to infection of the placenta and abortion. In contrast a high dose stimulates protective immunity, resulting in a much lower abortion rate. This model will be useful in understanding the mechanisms of infection underlying latency and onset of disease, as well as in the development of novel therapeutics and vaccines for controlling infection.
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27
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Caroprese M, Albenzio M, Ciliberti MG, Francavilla M, Sevi A. A mixture of phytosterols from Dunaliella tertiolecta affects proliferation of peripheral blood mononuclear cells and cytokine production in sheep. Vet Immunol Immunopathol 2012; 150:27-35. [PMID: 22985633 DOI: 10.1016/j.vetimm.2012.08.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 07/31/2012] [Accepted: 08/06/2012] [Indexed: 01/17/2023]
Abstract
The aim of this study was to investigate the immunomodulatory and anti-inflammatory role of a mixture of phytosterols extracted from the microalga Dunaliella tertiolecta on peripheral blood mononuclear cells (PBMC) isolated from sheep. PBMC were treated to determine cell proliferation and cytokine production with different sterols: ergosterol (E), a mixture of eleven Algae sterols extracted and purified from D. tertiolecta (Algae Extract, AE), a mixture of ergosterol and 7-dehydroporiferasterol extracted and purified from D. tertiolecta (Purified Extract, PE). Cytokine production (TNF-α, IL-6, IL-1β, and IL-10) was evaluated after cell treatment with Concanavalin A (Con A) and lipopolysaccharide (LPS). The mixture of ergosterol and 7-dehydroporiferasterol extracted and purified from D. tertiolecta showed a suppressive effect on cell proliferation, and a reduction of pro-inflammatory cytokines production. Furthermore, a stimulatory effect on the production of the regulatory cytokine IL-10 was found. The immunosuppressive effect exerted by the mixture of ergosterol and 7-dehydroporiferasterol from D. tertiolecta was dose-dependent both in suppressing cell proliferation and in stimulating IL-10 production. Present results showed that the immunomodulatory and anti-inflammatory activities were more apparent in the purified extract characterized by the mixture of ergosterol and 7-dehydroporiferasterol, and might depend on the existence of a synergic effect of the structures of the two phytosterols. Furthermore, findings from our study suggest that the purified extract characterized by the mixture of ergosterol and 7-dehydroporiferasterol from D. tertiolecta could be used to reduce immune reactions resulting from inflammatory diseases in sheep production systems, and could have innovative implications on the modulation of sheep immune system when used as feed supplements.
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Affiliation(s)
- Mariangela Caroprese
- Department of Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy.
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29
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Caroprese M, Albenzio M, Marino R, Santillo A, Sevi A. Immune response and milk production of dairy cows fed graded levels of rumen-protected glutamine. Res Vet Sci 2012; 93:202-9. [DOI: 10.1016/j.rvsc.2011.07.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Revised: 07/12/2011] [Accepted: 07/15/2011] [Indexed: 10/17/2022]
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30
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Entrican G, Lunney JK. Veterinary Immunology Committee Toolkit Workshop 2010: Progress and plans. Vet Immunol Immunopathol 2012; 148:197-201. [DOI: 10.1016/j.vetimm.2011.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Revised: 02/09/2011] [Accepted: 03/05/2011] [Indexed: 01/26/2023]
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31
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A two year BTV-8 vaccination follow up: Molecular diagnostics and assessment of humoral and cellular immune reactions. Vet Microbiol 2012; 154:247-56. [DOI: 10.1016/j.vetmic.2011.07.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 05/17/2011] [Accepted: 07/19/2011] [Indexed: 11/21/2022]
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32
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Entrican G, Wheelhouse N, Wattegedera SR, Longbottom D. New challenges for vaccination to prevent chlamydial abortion in sheep. Comp Immunol Microbiol Infect Dis 2011; 35:271-6. [PMID: 22209689 DOI: 10.1016/j.cimid.2011.12.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 12/05/2011] [Accepted: 12/06/2011] [Indexed: 10/14/2022]
Abstract
Ovine enzootic abortion (OEA) is caused by the obligate intracellular Gram-negative bacterium Chlamydia abortus. OEA remains a common cause of infectious abortion in many sheep-rearing countries despite the existence of commercially available vaccines that protect against the disease. There are a number of confounding factors that influence the uptake and use of these vaccines, which includes an inability to discriminate between infected and vaccinated animals (DIVA) using conventional serological diagnostic techniques. This suggests that the immunity elicited by current vaccines is similar to that observed in convalescent, immune sheep that have experienced OEA. The existence of these vaccines provides an opportunity to understand how protection against OEA is elicited and also to understand why vaccines can occasionally appear to fail, as has been reported recently for OEA. Interferon-gamma (IFN-γ), the cytokine that classically defines Th1-type adaptive immunity, is a strong correlate of protection against OEA in sheep and has been shown to inhibit the growth of C. abortus in vitro. Humoral immunity to C. abortus is observed in both vaccinated and naturally infected sheep, but antibody responses tend to be used more as diagnostic markers than targets for strategic vaccine design. A future successful DIVA vaccine against OEA should aim to elicit the immunological correlate of protection (IFN-γ) concomitantly with an antibody profile that is distinct from that of the natural infection. Such an approach requires careful selection of protective components of C. abortus combined with an effective delivery system that elicits IFN-γ-producing CD4+ve memory T cells.
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Affiliation(s)
- Gary Entrican
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, Midlothian, EH26 0PZ Scotland, United Kingdom.
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33
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Mackenzie-Dyck S, Attah-Poku S, Juillard V, Babiuk LA, van Drunen Littel-van den Hurk S. The synthetic peptides bovine enteric β-defensin (EBD), bovine neutrophil β-defensin (BNBD) 9 and BNBD 3 are chemotactic for immature bovine dendritic cells. Vet Immunol Immunopathol 2011; 143:87-107. [PMID: 21764462 DOI: 10.1016/j.vetimm.2011.06.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 05/11/2011] [Accepted: 06/17/2011] [Indexed: 11/17/2022]
Abstract
Human and murine immature DCs (iDCs) are highly efficient in antigen capture and processing, while as mature cells they present antigen and are potent initiators of cell-mediated immune responses. Consequently, iDCs are logical targets for vaccine antigens. Originally discovered for their antimicrobial activity, and thought of as strictly part of the innate immune system, studies with defensins such as human β (beta)-defensin 2 (hBD2) and murine β-defensin 2 (mBD2) have shown that they can function as chemo-attractant for iDCs and, in vaccination strategies, can enhance antigen-specific adaptive immune responses. Most studies to date have been conducted in mice. In contrast, little is known about defensins in cattle. To expand our understanding of the role of defensins in modulating immune responses in cattle, DCs were generated from bovine monocytes and the immature state of these bovine DCs was characterized phenotypically and through functional assays. By day 3 (DC3), bovine monocyte-derived DCs stained positively for DC-specific receptors CD1, CD80/86, CD205, DC-Lamp and MMR. When compared to conventional 6-day DC cultures or DCs cultured for 10 days with and without maturation factors, these DC3 were functionally at their most immature stage. Fourteen of the 16 known bovine β-defensins were synthesized and the synthetic peptides were screened for their ability to attract bovine iDCs. Bovine DC3 were consistently attracted to BNBD3, an analog of BNBD3 (aBNBD3), BNBD9 and bovine EBD in vitro and to aBNBD3 in vivo. These results are the first to describe chemotactic ability of synthetic bovine β-defensins for immature bovine monocyte-derived DCs.
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Affiliation(s)
- Sarah Mackenzie-Dyck
- Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, Canada
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Ferret-Bernard S, Lacroix-Lamandé S, Remot A, Metton C, Bernardet N, Charley B, Drouet F, Laurent F. Mesenteric lymph node cells from neonates present a prominent IL-12 response to CpG oligodeoxynucleotide via an IL-15 feedback loop of amplification. Vet Res 2011; 42:19. [PMID: 21314903 PMCID: PMC3039596 DOI: 10.1186/1297-9716-42-19] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Accepted: 09/30/2010] [Indexed: 12/29/2022] Open
Abstract
At birth, the immune system is still in development making neonates more susceptible to infections. The recognition of microbial ligands is a key step in the initiation of immune responses. It can be mimicked to stimulate the immune system by the use of synthetic ligands recognising pattern recognition receptors. In human and mouse, it has been found that neonatal cytokine responses to toll-like receptor (TLR) ligands differ in many ways from those of adults but the relevant studies have been limited to cord blood and spleen cells. In this study, we compared the responses in neonate and adult sheep to CpG oligodeoxynucleotides (ODN), a TLR9 ligand, in both a mucosal and a systemic organ. We observed that in response to CpG-ODN more IL-12 was produced by neonatal than adult sheep cells from mesenteric lymph nodes (MLN) and spleen. This higher IL-12 response was limited to the first 20 days after birth for MLN cells but persisted for a longer period for spleen cells. The major IL-12-producing cells were identified as CD14+CD11b+. These cells were poor producers of IL-12 in response to direct stimulation with CpG-ODN and required the cooperation of other MLN cells. The difference in response to CpG-ODN between neonates and adults can be attributed to both a higher proportion of CD14+CD11b+ cells in neonate lambs and their higher capacity to produce IL-15. The IL-15 increases IL-12 production by an amplifying feedback loop involving CD40.
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Affiliation(s)
- Stéphanie Ferret-Bernard
- INRA, UR1282 Infectiologie Animale et Santé Publique, Equipe « Contrôle et Immunologie des Maladies Entériques du Nouveau-Né », Nouzilly, France.
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35
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Ferret-Bernard S, Remot A, Lacroix-Lamandé S, Metton C, Bernardet N, Drouet F, Laurent F. Cellular and molecular mechanisms underlying the strong neonatal IL-12 response of lamb mesenteric lymph node cells to R-848. PLoS One 2010; 5:e13705. [PMID: 21060840 PMCID: PMC2965667 DOI: 10.1371/journal.pone.0013705] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Accepted: 10/04/2010] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Comparative studies on the response of neonates and adults to TLR stimulation have been almost exclusively limited to comparisons of human neonatal cord blood cells with peripheral blood from adults, and analyses of spleen cell responses in mice. We need to extend these studies and gain further information regarding such responses at mucosal sites. METHODOLOGY/PRINCIPAL FINDINGS We used sheep as a large animal model to study TLR agonist responses in the lymph nodes draining the intestine, an organ that must adapt to profound changes after birth. In response to the imidazoquinoline compound R-848, neonatal mesenteric lymph node (MLN) and spleen cells produced more IL-12 and, consequently, more IFNγ than their adult counterparts. This difference was age-related for both organs, but the preferential IL-12 response decreased more rapidly in the MLN, with young animals producing similar amounts of this cytokine to adults, from the age of 20 days onwards. Intracellular assays and depletion experiments identified CD14(+)CD11b(+)CD40(+) cells as the main producer of IL-12. These cells accounted for a greater proportion of neonatal than of adult MLN cells, and also produced, in direct response to R-848, more IL-12 after isolation. This strong IL-12 response in neonates occurred despite the production of larger amounts of the regulatory cytokine IL-10 and the stronger upregulation of SOCS-1 and SOCS-3 mRNA levels than in adult cells, and was correlated with an increase in p38/MAPK phosphorylation. CONCLUSIONS/SIGNIFICANCE This is the first attempt to decipher the mechanism by which neonatal MLN cells produce more IL-12 than adult cells in response to the TLR8 agonist R-848. CD14(+)CD11b(+)CD40(+) IL-12-producing cells were more numerous in neonate than in adult MLN cells and displayed higher intracellular responsiveness upon R-848 stimulation. This work provides relevant information for future vaccination or immunostimulation strategies targeting neonates.
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Affiliation(s)
- Stéphanie Ferret-Bernard
- Equipe «Contrôle et Immunologie des Maladies Entériques du Nouveau-Né», UR1282 Infectiologie Animale et Santé Publique, INRA Nouzilly, Nouzilly, France
| | - Aude Remot
- Equipe «Contrôle et Immunologie des Maladies Entériques du Nouveau-Né», UR1282 Infectiologie Animale et Santé Publique, INRA Nouzilly, Nouzilly, France
| | - Sonia Lacroix-Lamandé
- Equipe «Contrôle et Immunologie des Maladies Entériques du Nouveau-Né», UR1282 Infectiologie Animale et Santé Publique, INRA Nouzilly, Nouzilly, France
| | - Coralie Metton
- Equipe «Contrôle et Immunologie des Maladies Entériques du Nouveau-Né», UR1282 Infectiologie Animale et Santé Publique, INRA Nouzilly, Nouzilly, France
| | - Nelly Bernardet
- Equipe «Contrôle et Immunologie des Maladies Entériques du Nouveau-Né», UR1282 Infectiologie Animale et Santé Publique, INRA Nouzilly, Nouzilly, France
| | - Françoise Drouet
- Equipe «Contrôle et Immunologie des Maladies Entériques du Nouveau-Né», UR1282 Infectiologie Animale et Santé Publique, INRA Nouzilly, Nouzilly, France
| | - Fabrice Laurent
- Equipe «Contrôle et Immunologie des Maladies Entériques du Nouveau-Né», UR1282 Infectiologie Animale et Santé Publique, INRA Nouzilly, Nouzilly, France
- * E-mail:
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Entrican G, Wattegedera S, Wheelhouse N, Allan A, Rocchi M. Immunological paradigms and the pathogenesis of ovine chlamydial abortion. Am J Reprod Immunol 2010; 64:287-94. [PMID: 20712809 DOI: 10.1111/j.1600-0897.2010.00907.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Successful mammalian pregnancy involves complex immunological interactions between the mother and foetus that are not yet fully understood. A number of immunological paradigms have been established to explain the failure of the maternal immune system to reject the semi-allogeneic foetus, mainly based on studies in mice and humans. However, as placental structure, gestation periods and number of concepti per pregnancy can vary greatly between mammals, it is not always clear how applicable these immunological paradigms are to reproduction in other species. Here, we discuss the predictions of three important immunological paradigms in relation to the pathogenesis of ovine enzootic abortion (OEA), a common cause of infectious abortion in sheep and other ruminants. OEA is caused by the intracellular Gram-negative bacterium Chlamydophila abortus that exhibits a tropism for placental trophoblast. The paradigms of particular relevance to the pathogenesis of OEA are as follows: (i) intracellular bacterial infections are controlled by T(H)1-type CD4(+ve) T cells; (ii) indoleamine 2,3-dioxygenase is expressed in the placenta to prevent immunological rejection of the semi-allogeneic foetus; and (iii) pregnancy is a maternal T(H)2-type phenomenon. We discuss the relevance and validity of these paradigms for chlamydial abortion and reproductive immunology in sheep.
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Affiliation(s)
- Gary Entrican
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh, Scotland, UK.
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Wattegedera SR, Watson DM, Hope JC, Kaiser P, Sales J, McInnes CJ, Entrican G. Relative quantitative kinetics of interferon-gamma and interleukin-10 mRNA and protein production by activated ovine peripheral blood mononuclear cells. Vet Immunol Immunopathol 2010; 136:34-42. [PMID: 20197203 DOI: 10.1016/j.vetimm.2010.02.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2009] [Revised: 02/02/2010] [Accepted: 02/02/2010] [Indexed: 10/19/2022]
Abstract
Interferon-gamma (IFN-gamma) and interleukin (IL)-10 are cross-regulatory cytokines capable of driving and controlling the adaptive host immune response. The inter-relationship between IFN-gamma and IL-10 expression has not been defined in sheep despite biological evidence suggesting that they perform similar functions to their orthologues described in other species. To address this, we have developed a quantitative (q)PCR method to assess relative levels of IFN-gamma and IL-10 mRNA expression in activated ovine peripheral blood mononuclear cells (PBMC) and compared the kinetics of mRNA expression with amounts of cytokine secreted by the cells over a 96h period. PBMC were collected from sheep immunised with the nominal antigen ovalbumin (Ova) and re-stimulated in vitro with antigen and the T cell mitogen concanavalin A (ConA). The recall response to antigen was characterised by a single peak in IFN-gamma mRNA expression at 48h of culture (13-fold increase over unstimulated cells) and relatively lower expression of IL-10 mRNA (average 2-3-fold increase over the 96h culture period). Antigen-driven IFN-gamma protein concentration was greatest at the end of the culture period (96h) whereas IL-10 protein level was not elevated above that observed in unstimulated cells. The typical response to ConA was greater for both cytokines, with IFN-gamma mRNA expression peaking at 6h of culture (133-fold increase) then declining rapidly whereas IL-10 mRNA expression peaked at 24h (16-fold increase) and declined more gradually. Despite these differences in the relative kinetics of mRNA expression in mitogen-activated PBMC, the typical pattern of protein expression of the two cytokines was similar. Both showed a gradual rise in protein concentration starting from 12h of culture which was still rising at the end of the culture period (96h). These data demonstrate that the kinetics of mRNA expression for IFN-gamma and IL-10 in activated ovine PBMC do not necessarily correlate with detectable protein in culture.
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Affiliation(s)
- S R Wattegedera
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik, Midlothian EH26 0PZ, UK.
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Tourais-Esteves I, Bernardet N, Lacroix-Lamandé S, Ferret-Bernard S, Laurent F. Neonatal goats display a stronger TH1-type cytokine response to TLR ligands than adults. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2008; 32:1231-1241. [PMID: 18514862 DOI: 10.1016/j.dci.2008.03.011] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2008] [Revised: 03/29/2008] [Accepted: 03/31/2008] [Indexed: 05/26/2023]
Abstract
In mammals, Toll-like receptors play a critical role in initiating innate immune responses and modulating adaptive immunity, by recognizing conserved microbial molecular patterns. This study was undertaken to identify specific features of the responses to synthetic toll-like receptor (TLR) agonists in goats, for the definition of tailored immunostimulation strategies. We show here, in contrast to what has been shown in mice, that mesenteric lymph nodes (MLNs) cells and splenocytes from neonatal goats produce much higher levels of TH1-type cytokines than adults in response to various TLR agonists. IL-12 was identified as a critical cytokine for IFNgamma production by CD8(+) neonatal cells. The higher level of IL-12 production by neonatal MLN and spleen cells than by adult cells was not correlated with a higher level of TLR expression or lower levels of production of the regulatory cytokine IL-10. In neonates, two cell populations-class II(+) CD8(+) and class II(+) CD8(-) cells-produce IL-12 in response to R848 and Poly I:C, respectively. Thus, goat kids have characteristics that could be exploited to favor development of the TH1-type responses critical for the control of intracellular pathogens.
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Affiliation(s)
- Isabel Tourais-Esteves
- Laboratoire Contrôle et Immunologie des Maladies Entériques du Nouveau-né, UR1282 Infectiologie Animale et Santé Publique, INRA de Tours, F-37380 Nouzilly, France
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39
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Wattegedera S, Rocchi M, Sales J, Howard CJ, Hope JC, Entrican G. Antigen-specific peripheral immune responses are unaltered during normal pregnancy in sheep. J Reprod Immunol 2008; 77:171-8. [PMID: 17826845 DOI: 10.1016/j.jri.2007.07.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2007] [Revised: 07/20/2007] [Accepted: 07/24/2007] [Indexed: 10/22/2022]
Abstract
A shift in the balance of T(Helper) (T(H))1/T(H)2 cytokine production by maternal peripheral blood leukocytes is regarded as a common important feature of successful mammalian pregnancy. Although the phenomenon has been studied extensively in animals with invasive hemochorial placentae, the paradigm has not been studied in detail in species with less-invasive placentae, such as sheep that have a synepitheliochorial placenta. Sixteen sheep were immunised with the nominal antigen chicken egg albumin (Ova) and antigen-specific humoral and cellular responses were established in all sheep. The 16 sheep were synchronised, 11 were mated and successfully conceived, the remaining 5 served as non-pregnant controls. Peripheral blood mononuclear cells (PBMC) were isolated approximately every 2 weeks and restimulated in vitro with either Ova or the T cell mitogen concanavalin A (ConA), and cell proliferation and cytokine production measured. There were no detectable differences in antigen-driven PBMC proliferation, interferon-gamma (IFN-gamma), interleukin (IL)-4 or IL-10 production between pregnant and non-pregnant sheep. Also, there were no appreciable differences in ConA-induced IFN-gamma, IL-4 or IL-10 between the groups. These data suggest that a shift in T(H)1/T(H)2 cytokine production does not occur in pregnant sheep and indicate that further comparative reproductive immunology studies on species with non-invasive placentation will be informative of materno-fetal interactions and immune regulation during pregnancy.
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Affiliation(s)
- S Wattegedera
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh EH26 0PZ, UK.
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40
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Carboxymethytl pachymaram up-regulates dendritic cell’s function in hepatitis B virus transgenic mice in vitro. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s11859-006-0040-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Berger ST, Griffin FT. A comparison of ovine monocyte-derived macrophage function following infection with Mycobacterium avium ssp. avium and Mycobacterium avium ssp. paratuberculosis. Immunol Cell Biol 2006; 84:349-56. [PMID: 16509826 DOI: 10.1111/j.1440-1711.2006.01431.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Mycobacterium avium ssp. paratuberculosis causes Johne's disease in ruminants, whereas the antigenically and genetically similar subspecies Mycobacterium avium ssp. avium is less virulent. In this study, we compared one strain of each subspecies for its ability to survive, induce cytokines, suppress MHC class I and II expression and induce apoptosis or necrosis in ovine monocyte-derived macrophages. Both subspecies survived intracellularly and induced the secretion of IL-10. Low levels of TNF-alpha were detected after infection with both subspecies at 4 h. IL-12 was not upregulated after infection. Downregulation of MHC class I and II was evident in response to infection with both M. avium ssp. avium and M. avium ssp. paratuberculosis. No significant cytotoxicity was detectable in ovine macrophages after the addition of bacteria. M. avium ssp. paratuberculosis induced slightly more apoptosis than M. avium ssp. avium. Still the overall rate of apoptosis was very low and both subspecies suppressed LPS-induced macrophage apoptosis.
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Affiliation(s)
- Sven T Berger
- Disease Research Laboratory, Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
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