1
|
Igoshin AV, Romashov GA, Yurchenko AA, Yudin NS, Larkin DM. Scans for Signatures of Selection in Genomes of Wagyu and Buryat Cattle Breeds Reveal Candidate Genes and Genetic Variants for Adaptive Phenotypes and Production Traits. Animals (Basel) 2024; 14:2059. [PMID: 39061521 PMCID: PMC11274160 DOI: 10.3390/ani14142059] [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: 06/14/2024] [Revised: 07/10/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024] Open
Abstract
Past and ongoing selection shapes the genomes of livestock breeds. Identifying such signatures of selection allows for uncovering the genetic bases of affected phenotypes, including economically important traits and environmental adaptations, for the further improvement of breed genetics to respond to climate and economic challenges. Turano-Mongolian cattle are a group of taurine breeds known for their adaptation to extreme environmental conditions and outstanding production performance. Buryat Turano-Mongolian cattle are among the few breeds adapted to cold climates and poor forage. Wagyu, on the other hand, is famous for high productivity and unique top-quality marbled meat. We used hapFLK, the de-correlated composite of multiple signals (DCMS), PBS, and FST methods to search for signatures of selection in their genomes. The scans revealed signals in genes related to cold adaptation (e.g., STAT3, DOCK5, GSTM3, and CXCL8) and food digestibility (SI) in the Buryat breed, and growth and development traits (e.g., RBFOX2 and SHOX2) and marbling (e.g., DGAT1, IQGAP2, RSRC1, and DIP2B) in Wagyu. Several putatively selected genes associated with reproduction, immunity, and resistance to pathogens were found in both breed genomes. The results of our work could be used for creating new productive adapted breeds or improving the extant breeds.
Collapse
Affiliation(s)
- Alexander V. Igoshin
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences (ICG SB RAS), Novosibirsk 630090, Russia; (A.V.I.)
| | - Grigorii A. Romashov
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences (ICG SB RAS), Novosibirsk 630090, Russia; (A.V.I.)
| | - Andrey A. Yurchenko
- INSERM U981, Gustave Roussy Cancer Campus, Université Paris Saclay, 94800 Villejuif, France
| | - Nikolay S. Yudin
- The Federal Research Center Institute of Cytology and Genetics, The Siberian Branch of the Russian Academy of Sciences (ICG SB RAS), Novosibirsk 630090, Russia; (A.V.I.)
| | - Denis M. Larkin
- Royal Veterinary College, University of London, London NW1 0TU, UK
| |
Collapse
|
2
|
Davis WC, Mahmoud AH, Hulubei V, Hasan A, Abdellrazeq GS. Progress in the development and use of monoclonal antibodies to study the evolution and function of the immune systems in the extant lineages of ungulates. Vet Immunol Immunopathol 2024; 270:110730. [PMID: 38422854 DOI: 10.1016/j.vetimm.2024.110730] [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: 12/03/2023] [Revised: 02/17/2024] [Accepted: 02/19/2024] [Indexed: 03/02/2024]
Abstract
Details on the origin and function of the immune system are beginning to emerge from genomic studies tracing the origin of B and T cells and the major histocompatibility complex. This is being accomplished through identification of DNA sequences of ancestral genes present in the genomes of lineages of vertebrates that have evolved from a common primordial ancestor. Information on the evolution of the composition and function of the immune system is being obtained through development of monoclonal antibodies (mAbs) specific for the MHC class I and II molecules and differentially expressed on leukocytes differentiation molecules (LDM). The mAbs have provided the tools needed to compare the similarities and differences in the phenotype and function of immune systems that have evolved during speciation. The majority of information currently available on evolution of the composition and function of the immune system is derived from study of the immune systems in humans and mice. As described in the present review, further information is beginning to emerge from comparative studies of the immune systems in the extant lineages of species present in the two orders of ungulates, Perissodactyla and Artiodactyla. Methods have been developed to facilitate comparative research across species on pathogens affecting animal and human health.
Collapse
Affiliation(s)
- William C Davis
- Department Veterinary Microbiology, College Veterinary Medicine, Washington State University, Pullman, WA, USA.
| | - Asmaa H Mahmoud
- Department Veterinary Microbiology, College Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Victoria Hulubei
- Department Veterinary Microbiology, College Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Amany Hasan
- Department Veterinary Microbiology, College Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - Gaber S Abdellrazeq
- Department Veterinary Microbiology, College Veterinary Medicine, Washington State University, Pullman, WA, USA
| |
Collapse
|
3
|
Bhat SA, Elnaggar M, Hall TJ, McHugo GP, Reid C, MacHugh DE, Meade KG. Preferential differential gene expression within the WC1.1 + γδ T cell compartment in cattle naturally infected with Mycobacterium bovis. Front Immunol 2023; 14:1265038. [PMID: 37942326 PMCID: PMC10628470 DOI: 10.3389/fimmu.2023.1265038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 10/02/2023] [Indexed: 11/10/2023] Open
Abstract
Bovine tuberculosis (bTB), caused by infection with Mycobacterium bovis, continues to cause significant issues for the global agriculture industry as well as for human health. An incomplete understanding of the host immune response contributes to the challenges of control and eradication of this zoonotic disease. In this study, high-throughput bulk RNA sequencing (RNA-seq) was used to characterise differential gene expression in γδ T cells - a subgroup of T cells that bridge innate and adaptive immunity and have known anti-mycobacterial response mechanisms. γδ T cell subsets are classified based on expression of a pathogen-recognition receptor known as Workshop Cluster 1 (WC1) and we hypothesised that bTB disease may alter the phenotype and function of specific γδ T cell subsets. Peripheral blood was collected from naturally M. bovis-infected (positive for single intradermal comparative tuberculin test (SICTT) and IFN-γ ELISA) and age- and sex-matched, non-infected control Holstein-Friesian cattle. γδ T subsets were isolated using fluorescence activated cell sorting (n = 10-12 per group) and high-quality RNA extracted from each purified lymphocyte subset (WC1.1+, WC1.2+, WC1- and γδ-) was used to generate transcriptomes using bulk RNA-seq (n = 6 per group, representing a total of 48 RNA-seq libraries). Relatively low numbers of differentially expressed genes (DEGs) were observed between most cell subsets; however, 189 genes were significantly differentially expressed in the M. bovis-infected compared to the control groups for the WC1.1+ γδ T cell compartment (absolute log2 FC ≥ 1.5 and FDR P adj. ≤ 0.1). The majority of these DEGs (168) were significantly increased in expression in cells from the bTB+ cattle and included genes encoding transcription factors (TBX21 and EOMES), chemokine receptors (CCR5 and CCR7), granzymes (GZMA, GZMM, and GZMH) and multiple killer cell immunoglobulin-like receptor (KIR) proteins indicating cytotoxic functions. Biological pathway overrepresentation analysis revealed enrichment of genes with multiple immune functions including cell activation, proliferation, chemotaxis, and cytotoxicity of lymphocytes. In conclusion, γδ T cells have important inflammatory and regulatory functions in cattle, and we provide evidence for preferential differential activation of the WC1.1+ specific subset in cattle naturally infected with M. bovis.
Collapse
Affiliation(s)
- Sajad A. Bhat
- UCD School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Dunsany, Ireland
| | - Mahmoud Elnaggar
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Dunsany, Ireland
| | - Thomas J. Hall
- UCD School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - Gillian P. McHugo
- UCD School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - Cian Reid
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Dunsany, Ireland
| | - David E. MacHugh
- UCD School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Kieran G. Meade
- UCD School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
- UCD Institute of Food and Health, University College Dublin, Dublin, Ireland
| |
Collapse
|
4
|
Elnagga MM, Abdellrazeq GS, Sacco RE, Harsla TR, Mucci ML, Fry LM, Hulubei V, Davis WC. Comparative analysis of the specificity of monoclonal antibodies developed against the bottlenose dolphin, Tursiops truncatus, TNF-α, IL1-β, IL-6, IL-8, IL-10 with monoclonal antibodies made against ovine IFN-γ bovine IL-17A and IL-1β revealed they recognize epitopes conserved on dolphin and bovine orthologues. Vet Immunol Immunopathol 2022; 250:110456. [PMID: 35728348 DOI: 10.1016/j.vetimm.2022.110456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 05/21/2022] [Accepted: 06/15/2022] [Indexed: 11/26/2022]
Abstract
Opportunities to include Cetancodontamorpha in the study of the evolution of the immune system in the clades of Artiodactylamorpha, Ruminantiamorpha, Suinamorpha, and Camelidamorpha have increased with the use of the bottlenose dolphin, Tursiops truncatus, as a sentinel species to study the effects of environmental pollutants on the health of marine mammals. Efforts are currently underway to increase the number reagents needed for detailed studies. Thus far, screening of monoclonal antibodies (mAbs) made to leukocyte differentiation molecules (LDM) and the major histocompatibility (MHC) class I and class II molecules in Ruminantiamorpha have yielded some mAbs that recognize conserved epitopes expressed on orthologues in the bottlenose dolphin. More direct approaches are in progress to identify additional mAbs to bottlenose LDM and cytokines. As reported here, both direct and indirect approaches were used to identify mAbs specific for cytokines useful in monitoring the effects of environmental pollutants on the immune system. Immunization of mice with expressed bottlenose dolphin cytokines yielded mAbs specific for IFN-γ, TNF-α, IL-6, IL-8, IL-10, and IL-17A. Screening of previously developed mAbs used in livestock immunology research revealed mAbs developed against ovine IFN-γ and bovine IL-17 and IL-1β recognize conserved epitopes in bottlenose dolphin orthologues. The mAbs identified in the present study expand the reagents available to study the function of the immune system in bottlenose dolphins and cattle.
Collapse
Affiliation(s)
- Mahmoud M Elnagga
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Gaber S Abdellrazeq
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA; Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Randy E Sacco
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, United States Department of Agriculture, Agricultural Research Service, Ames, IA, USA
| | - Trevor R Harsla
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, United States Department of Agriculture, Agricultural Research Service, Ames, IA, USA
| | - Mallory L Mucci
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, United States Department of Agriculture, Agricultural Research Service, Ames, IA, USA
| | - Lindsay M Fry
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA; Animal Disease Research Unit, Agricultural Research Service, United States Department of Agriculture, Pullman, WA, USA
| | - Victoria Hulubei
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA
| | - William C Davis
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, WA, USA.
| |
Collapse
|
5
|
Advantages and Challenges of Differential Immune Cell Count Determination in Blood and Milk for Monitoring the Health and Well-Being of Dairy Cows. Vet Sci 2022; 9:vetsci9060255. [PMID: 35737307 PMCID: PMC9229168 DOI: 10.3390/vetsci9060255] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/07/2022] [Accepted: 05/24/2022] [Indexed: 02/05/2023] Open
Abstract
A key challenge of the 21st century will be to provide the growing world population with a sustainable and secure supply of food. Consequently, the dairy farming’s primary task is to lower milk losses and other inefficiencies associated with diseased cows. Moreover, a shift from curative to preventive health management would be desirable for mastitis and a wide variety of other infectious and non-infectious cattle diseases, some of which are known to have profound negative effects on the performance and well-being of cows. Differential cell counting (DCC), a procedure that aims to determine the proportions of different somatic cell types in raw milk samples, has not only the potential to optimize mastitis diagnostics, but it could furthermore serve as a diagnostic tool for monitoring the general and overall health status of dairy cows. Based on a broad search of the literature, the practical utility of various types of DCC is summarized and discussed in this review. Since it might be of advantage to interpret DCC with the aid of data from studies in humans, differences between the immune systems of humans and dairy cattle, with a special focus on surface marker expression profiles and γδ (gamma delta) T-cell characteristics, are also described.
Collapse
|
6
|
Le Page L, Baldwin CL, Telfer JC. γδ T cells in artiodactyls: Focus on swine. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 128:104334. [PMID: 34919982 DOI: 10.1016/j.dci.2021.104334] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/08/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
Vaccination is the most effective medical strategy for disease prevention but there is a need to improve livestock vaccine efficacy. Understanding the structure of the immune system of swine, which are considered a γδ T cell "high" species, and thus, particularly how to engage their γδ T cells for immune responses, may allow for development of vaccine optimization strategies. The propensity of γδ T cells to home to specific tissues, secrete pro-inflammatory and regulatory cytokines, exhibit memory or recall responses and even function as antigen-presenting cells for αβ T cells supports the concept that they have enormous potential for priming by next generation vaccine constructs to contribute to protective immunity. γδ T cells exhibit several innate-like antigen recognition properties including the ability to recognize antigen in the absence of presentation via major histocompatibility complex (MHC) molecules enabling γδ T cells to recognize an array of peptides but also non-peptide antigens in a T cell receptor-dependent manner. γδ T cell subpopulations in ruminants and swine can be distinguished based on differential expression of the hybrid co-receptor and pattern recognition receptors (PRR) known as workshop cluster 1 (WC1). Expression of various PRR and other innate-like immune receptors diversifies the antigen recognition potential of γδ T cells. Finally, γδ T cells in livestock are potent producers of critical master regulator cytokines such as interferon (IFN)-γ and interleukin (IL)-17, whose production orchestrates downstream cytokine and chemokine production by other cells, thereby shaping the immune response as a whole. Our knowledge of the biology, receptor expression and response to infectious diseases by swine γδ T cells is reviewed here.
Collapse
Affiliation(s)
- Lauren Le Page
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Cynthia L Baldwin
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Janice C Telfer
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA.
| |
Collapse
|
7
|
Identification of leptospiral protein antigens recognized by WC1 + γδ T cell subsets as target for development of recombinant vaccines. Infect Immun 2021; 90:e0049221. [PMID: 34694919 DOI: 10.1128/iai.00492-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pathogenic Leptospira species cause leptospirosis, a neglected zoonotic disease recognized as a global public health problem. It is also the cause of the most common cattle infection that results in major economic losses due to reproductive problems. γδ T cells play a role in the protective immune response in livestock species against Leptospira while human γδ T cells also respond to Leptospira. Thus, activation of γδ T cells has emerged as a potential component in the optimization of vaccine strategies. Bovine γδ T cells proliferate and produce IFN-γ in response to vaccination with inactivated leptospires and this response is mediated by a specific subpopulation of the WC1-bearing γδ T cells. WC1 molecules are members of the group B scavenger receptor cysteine rich (SRCR) superfamily and are composed of multiple SRCR domains, of which particular extracellular domains act as ligands for Leptospira. Since WC1 molecules function as both pattern recognition receptors and γδ TCR coreceptors, the WC1 system has been proposed as a novel target to engage γδ T cells. Here, we demonstrate the involvement of leptospiral protein antigens in the activation of WC1+ γδ T cells and identified two leptospiral outer membrane proteins able to interact directly with them. Interestingly, we show that the protein-specific γδ T cell response is composed of WC1.1+ and WC1.2+ subsets, although a greater number of WC1.1+ ???? T-cell respond. Identification of protein antigens will enhance our understanding of the role γδ T cells play in the leptospiral immune response and in recombinant vaccine development.
Collapse
|
8
|
Yirsaw AW, Gillespie A, Britton E, Doerle A, Johnson L, Marston S, Telfer J, Baldwin CL. Goat γδ T cell subpopulations defined by WC1 expression, responses to pathogens and cytokine production. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 118:103984. [PMID: 33352199 DOI: 10.1016/j.dci.2020.103984] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/15/2020] [Accepted: 12/15/2020] [Indexed: 06/12/2023]
Abstract
The major functions of γδ T cells in mammals overlap with those of αβ T cells but differ in that γδ T cells are rapid responders and see different types of antigens. While γδ T cells have been shown to be a major population of circulating lymphocytes in artiodactyl species such as cattle, sheep, and pigs, less is known about these cells in goats, an important agricultural species. We have recently shown that WC1, a γδ T cell-specific family of hybrid pattern recognition receptors/co-receptors, is a multigenic family in goats expanded beyond what occurs in cattle. This study was conducted to address some of the limitations of previous studies in determining the proportions of γδ T cells, WC1+ γδ T cells as well as the WC1.1+ and WC1.2+ subpopulations in blood and to evaluate their responses to various pathogens. Previously, the proportion of caprine γδ T cells was determined using a monoclonal antibody (mAb) 86D that we show here does not react with all γδ T cells thereby underestimating their contribution to the lymphocyte population. Using a mAb reactive with the TCRδ constant region we found the proportion of γδ T cells in blood was not significantly less than that of either CD4 or CD8 T cells and did not decrease with age after 6 months. γδ T cells that expressed WC1 ranged from ~20 to 85% of the total γδ T cells. Less than half of those were classified as WC1.1+ or WC1.2+ by mAb staining thus indicating a third major WC1+ population. We found that naïve γδ T cells proliferated in cultures of PBMC stimulated with antigens of Leptospira or Mycobacterium avium paratuberculosis (MAP) more than they did in control medium cultures or in those stimulated with M. bovis BCG antigens and that the responding γδ T cells included both WC1+ and WC1- cells. In ex vivo PMA/ionomycin-stimulated cultures of WC1- γδ T cells but not WC1+ cells produced both IL-17 and IFNγ. In longterm cultures with Leptospira or MAP both WC1- and WC1+ cells proliferated but only WC1- γδ T cells produced IL-17. In conclusion, goats have a substantial number of WC1- and WC1+ γδ T cells in PBMC that do not decrease with animal age after 6 months; both populations respond to bacterial antigens as naïve cells but in these cultures only the WC1- γδ cells produc IL-17 and IFNγ .
Collapse
Affiliation(s)
- Alehegne W Yirsaw
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Alexandria Gillespie
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Emily Britton
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Alyssa Doerle
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Lisa Johnson
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Susan Marston
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Janice Telfer
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA; Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA, 01003, USA
| | - Cynthia L Baldwin
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA; Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA, 01003, USA.
| |
Collapse
|
9
|
Special features of γδ T cells in ruminants. Mol Immunol 2021; 134:161-169. [PMID: 33774521 DOI: 10.1016/j.molimm.2021.02.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/12/2021] [Accepted: 02/28/2021] [Indexed: 02/07/2023]
Abstract
Ruminant γδ T cells were discovered in the mid-1980's shortly after a novel T cell receptor (TCR) gene from murine cells was described in 1984 and the murine TCRγ gene locus in 1985. It was possible to identify γδ T cell populations early in ruminants because they represent a large proportion of the peripheral blood mononuclear cells (PBMC). This null cell population, γδ T cells, was designated as such by its non-reactivity with monoclonal antibodies (mAb) against ovine and bovine CD4, CD8 and surface immunoglobulin (Ig). γδ T cells are non-conventional T cells known as innate-like cells capable of using both TCR as well as other types of receptor systems including pattern recognition receptors (PRR) and natural killer receptors (NKR). Bovine γδ T cells have been shown to respond to stimulation through toll-like receptors, NOD, and NKG2D as well as to cytokines alone, protein and non-protein antigens through their TCR, and to pathogen-infected host cells. The two main populations of γδ T cells are distinguished by the presence or absence of the hybrid co-receptor/PRR known as WC1 or T19. These two populations not only differ by their proportional representation in various tissues and organs but also by their migration into inflamed tissues. The WC1+ cells are found in the blood, skin and spleen while the WC1- γδ T cells predominate in the gut, mammary gland and uterus. In ruminants, γδ T cells may produce IFNγ, IL-17, IL-10 and TGFβ, have cytotoxic activity and memory responses. The expression of particular WC1 family members controls the response to particular pathogens and correlates with differences in cytokine responses. The comparison of the WC1 gene families in cattle, sheep and goats is discussed relative to other multigenic arrays that differentiate γδ T cells by function in humans and mice.
Collapse
|
10
|
Gillespie A, Yirsaw A, Kim S, Wilson K, McLaughlin J, Madigan M, Loonie K, Britton E, Zhang F, Damani-Yokota P, Gunasekaran KP, Telfer J, Baldwin CL. Gene characterization and expression of the γδ T cell co-receptor WC1 in sheep. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 116:103911. [PMID: 33137393 DOI: 10.1016/j.dci.2020.103911] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
Sheep are known to express the hybrid co-receptor/pattern recognition receptor WC1 on their γδ T cells but details of the ovine WC1 multigenic array and gene expression were unknown. Annotation of the sheep genome assembly (Oar_rambouillet_v1.0) yielded 15 complete and 42 partial WC1 genes predicted to code for six different protein structures. RT-PCR amplification of the most distal scavenger receptor cysteine rich (SRCR) domain known as a1, which serves as the gene signature, from genomic and cDNA templates verified the majority of annotated genes. As for cattle and goats, sheep a1 domain sequences included WC1.1 and WC1.2 types. A unique ovine gene, WC1-16, had multiple SRCR a-pattern domains in tandem similar to one found in goats. Intracytoplasmic domains of WC1 transcripts had splice variants that may affect signal transduction. The larger number of WC1 genes in sheep and differences in structures and splice variants relative to cattle could have implications in expression patterns and engagement of γδ T cells by pathogens or vaccine constructs.
Collapse
MESH Headings
- Alternative Splicing
- Amino Acid Sequence
- Animals
- Cattle
- Female
- Gene Expression
- Genome/genetics
- Goats
- Membrane Glycoproteins/classification
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Phylogeny
- Protein Isoforms/genetics
- Protein Isoforms/metabolism
- Receptors, Antigen, T-Cell, gamma-delta/classification
- Receptors, Antigen, T-Cell, gamma-delta/genetics
- Receptors, Antigen, T-Cell, gamma-delta/metabolism
- Sequence Analysis, DNA/methods
- Sequence Homology, Amino Acid
- Sheep/genetics
- Sheep/metabolism
- T-Lymphocytes/metabolism
Collapse
Affiliation(s)
- Alexandria Gillespie
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Al Yirsaw
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Sookyung Kim
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Katherine Wilson
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Julie McLaughlin
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Mackenzie Madigan
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Kathleen Loonie
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Emily Britton
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Fengqiu Zhang
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Payal Damani-Yokota
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Karthick P Gunasekaran
- College of Information and Computer Sciences, 140 Governors Drive, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Janice Telfer
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA
| | - Cynthia L Baldwin
- Department of Veterinary and Animal Sciences, Integrated Sciences Building, 661 N. Pleasant St, University of Massachusetts, Amherst, MA, 01003-9264, USA.
| |
Collapse
|
11
|
Abstract
Gamma delta (γδ) T cells constitute a major lymphocyte population in peripheral blood and epithelial surfaces. They play nonredundant roles in host defense against diverse pathogens. Although γδ T cells share functional features with other cells of the immune system, their distinct methods of antigen recognition, rapid response, and tissue tropism make them a unique effector population. This review considers the current state of our knowledge on γδ T cell biology in ruminants and the important roles played by this nonconventional T cell population in protection against several infectious diseases of veterinary and zoonotic importance.
Collapse
|
12
|
Baldwin CL, Yirsaw A, Gillespie A, Le Page L, Zhang F, Damani-Yokota P, Telfer JC. γδ T cells in livestock: Responses to pathogens and vaccine potential. Transbound Emerg Dis 2019; 67 Suppl 2:119-128. [PMID: 31515956 DOI: 10.1111/tbed.13328] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 04/30/2019] [Accepted: 07/26/2019] [Indexed: 01/01/2023]
Abstract
The immediate objective of our research is to understand the molecular mechanisms underlying activation and potentiation of the protective functional response of WC1+ γδ T cells to pathogens afflicting livestock species. The long-term goal is to incorporate stimulation of these cells into the next generation of vaccine constructs. γδ T cells have roles in the immune response to many infectious diseases including viral, bacterial, protozoan and worm infections, and their functional responses overlap with those of canonical αβ T cells, for example they produce cytokines including interferon-γ and IL-17. Stimulation of non-conventional lymphocytes including γδ T cells and αβ natural killer T (NKT) cells has been shown to contribute to protective immunity in mammals, bridging the gap between the innate and adaptive immune responses. Because of their innate-like early response, understanding how to engage γδ T-cell responses has the potential to optimize strategies of those that aim to induce pro-inflammatory responses as discussed here.
Collapse
Affiliation(s)
- Cynthia L Baldwin
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Alehegne Yirsaw
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Alexandria Gillespie
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Lauren Le Page
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Fengqiu Zhang
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Payal Damani-Yokota
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| | - Janice C Telfer
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts
| |
Collapse
|
13
|
Damani-Yokota P, Gillespie A, Pasman Y, Merico D, Connelley TK, Kaushik A, Baldwin CL. Bovine T cell receptors and γδ WC1 co-receptor transcriptome analysis during the first month of life. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 88:190-199. [PMID: 30048698 DOI: 10.1016/j.dci.2018.07.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 07/20/2018] [Accepted: 07/20/2018] [Indexed: 06/08/2023]
Abstract
Here we evaluated neonatal transcription of α, β, γ and δ TCR and the γδ T cell co-receptor family WC1 in peripheral blood mononuclear cells. A previous report showed a rapid and global shift in transcription of immunoglobulin genes in neonatal calves during the first month after birth but this was not found here for the T cell genes. Transcription frequency of genes within TRAV subgroups correlated with the number of members, indicating a stochastic choice. In contrast, of the approximately 60 TRDV genes those in two of eleven TRDV1 clades and TRDVb3 were transcribed significantly more than the others while those in only one TRBV subgroup were. Transcription of genes in the TRGV5-containing cassette predominated among TRGV genes as a result of their exclusive usage by the WC1+ γδ T cells with a preference for transcription of two of four TRGV genes in that cassette. Finally, we report no large differences in transcription frequencies among the 13 WC1 genes.
Collapse
Affiliation(s)
- Payal Damani-Yokota
- Program in Molecular & Cellular Biology, University of Massachusetts, Amherst, MA, 01003, USA
| | - Alexandria Gillespie
- Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Yfke Pasman
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | | | - Timothy K Connelley
- Division of Immunity and Infection, The Roslin Institute, The University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - Azad Kaushik
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - Cynthia L Baldwin
- Program in Molecular & Cellular Biology, University of Massachusetts, Amherst, MA, 01003, USA; Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, MA, 01003, USA.
| |
Collapse
|
14
|
Damani-Yokota P, Telfer JC, Baldwin CL. Variegated Transcription of the WC1 Hybrid PRR/Co-Receptor Genes by Individual γδ T Cells and Correlation With Pathogen Responsiveness. Front Immunol 2018; 9:717. [PMID: 29867919 PMCID: PMC5949365 DOI: 10.3389/fimmu.2018.00717] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Accepted: 03/22/2018] [Indexed: 01/29/2023] Open
Abstract
γδ T cells have broad reactivity and actively participate in protective immunity against tumors and infectious disease-causing organisms. In γδ-high species such as ruminants and other artiodactyls many γδ T cells bear the lineage-specific markers known as WC1. WC1 molecules are scavenger receptors coded for by a multigenic array and are closely related to SCART found on murine γδ T cells and CD163 found on a variety of cells. We have previously shown that WC1 molecules are hybrid pattern recognition receptors thereby binding pathogens as well as signaling co-receptors for the γδ T cell receptor. WC1+ γδ T cells can be divided into two major subpopulations differentiated by the WC1 genes they express and the pathogens to which they respond. Therefore, we hypothesize that optimal γδ T cell responses are contingent on pathogen binding to WC1 molecules, especially since we have shown that silencing WC1 results in an inability of γδ T cells from primed animals to respond to the pathogen Leptospira, a model system we have employed extensively. Despite this knowledge about the crucial role WC1 plays in γδ T cell biology, the pattern of WC1 gene expression by individual γδ T cells was not known but is critical to devise methods to engage γδ T cells for responses to specific pathogens. To address this gap, we generated 78 γδ T cell clones. qRT-PCR evaluation showed that approximately 75% of the clones had one to three WC1 genes transcribed but up to six per cell occurred. The co-transcription of WC1 genes by clones showed many combinations and some WC1 genes were transcribed by both subpopulations although there were differences in the overall pattern of WC1 genes transcription. Despite this overlap, Leptospira-responsive WC1+ memory γδ T cell clones were shown to have a significantly higher propensity to express WC1 molecules that are known to bind to the pathogen.
Collapse
Affiliation(s)
- Payal Damani-Yokota
- Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA, United States
| | - Janice C Telfer
- Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA, United States.,Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, United States
| | - Cynthia L Baldwin
- Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA, United States.,Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, United States
| |
Collapse
|
15
|
Roussey JA, Oliveira LJ, Langohr IM, Sledge DG, Coussens PM. Regulatory T cells and immune profiling in johne's disease lesions. Vet Immunol Immunopathol 2016; 181:39-50. [PMID: 27013348 DOI: 10.1016/j.vetimm.2016.03.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 02/29/2016] [Accepted: 03/07/2016] [Indexed: 11/29/2022]
Abstract
Johne's disease, caused by infection with Mycobacterium avium subspecies paratuberculosis (MAP), is a chronic wasting disease of ruminants. Hallmark symptoms of clinical Johne's disease include diarrhea, progressive weight loss, and premature death; symptoms due largely to chronic inflammation in the small intestine. MAP colonizes resident macrophages within the ileum of the small intestine, subsequently establishing a persistent infection in the host. It has been proposed that regulatory T cells may play a role in the progression of Johne's disease, either through promotion of tolerance to MAP or via a loss in homeostasis that subsequently allows widespread inflammation. In this report, we evaluated the presence of Tregs, as well as other immune parameters, in the ileum and draining lymph nodes of MAP associated lesions. A lesion classification scheme was developed to categorize severity of MAP-induced lesions within infected tissues and subsequently regulatory T cell presence and overall immune activity were assessed corresponding to lesions of varying severity, in comparison to tissues from healthy control animals. Our results revealed a relationship between animal health and overall lesion severity within the infected tissues, as well as a relationship between bacterial burden and severity of pathology. Regulatory T cell abundance was shown to decrease with increasing lesion severity. Within the ileum, the expression of many Th1, Th2, and Treg-associated genes increased in mild lesions and decreased in severe lesions, whereas in the lymph nodes the expression of these genes tended to increase with increasing lesion severity. Based on our results, we conclude that a local loss of T cell (including Treg) activity occurs within severe ileal lesions associated with MAP, resulting in a loss of homeostasis that ultimately leads to the progression of clinical Johne's disease.
Collapse
Affiliation(s)
- Jonathan A Roussey
- Comparative Medicine and Integrative Biology Program, 784 Wilson Rd, G-100 VMC, Michigan State University, East Lansing, MI 48824, United States.
| | - Lilian J Oliveira
- Department of Animal Science, Michigan State University, 474 S. Shaw ln., East Lansing, MI 48824, United States
| | - Ingeborg M Langohr
- Pathobiology and Diagnostic Investigation, Diagnostic Center for Population and Animal Health, Michigan State University, 4125 Beaumont Rd., East Lansing, MI 48824, United States
| | - Dodd G Sledge
- Pathobiology and Diagnostic Investigation, Diagnostic Center for Population and Animal Health, Michigan State University, 4125 Beaumont Rd., East Lansing, MI 48824, United States
| | - Paul M Coussens
- Department of Animal Science, Michigan State University, 474 S. Shaw ln., East Lansing, MI 48824, United States
| |
Collapse
|
16
|
Morrison WI, Connelley T, Hemmink JD, MacHugh ND. Understanding the Basis of Parasite Strain-Restricted Immunity toTheileria parva. Annu Rev Anim Biosci 2015; 3:397-418. [DOI: 10.1146/annurev-animal-022513-114152] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- W. Ivan Morrison
- The Roslin Institute, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Roslin, Midlothian EH25 9RG, United Kingdom;
| | - Timothy Connelley
- The Roslin Institute, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Roslin, Midlothian EH25 9RG, United Kingdom;
| | | | - Niall D. MacHugh
- The Roslin Institute, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Roslin, Midlothian EH25 9RG, United Kingdom;
| |
Collapse
|
17
|
Hsu H, Baldwin CL, Telfer JC. The Endocytosis and Signaling of the γδ T Cell Coreceptor WC1 Are Regulated by a Dileucine Motif. THE JOURNAL OF IMMUNOLOGY 2015; 194:2399-406. [DOI: 10.4049/jimmunol.1402020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
18
|
Hsu H, Chen C, Nenninger A, Holz L, Baldwin CL, Telfer JC. WC1 is a hybrid γδ TCR coreceptor and pattern recognition receptor for pathogenic bacteria. THE JOURNAL OF IMMUNOLOGY 2015; 194:2280-8. [PMID: 25632007 DOI: 10.4049/jimmunol.1402021] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
WC1 proteins are uniquely expressed on γδ T cells and belong to the scavenger receptor cysteine-rich (SRCR) superfamily. While present in variable, and sometimes high, numbers in the genomes of mammals and birds, in cattle there are 13 distinct genes (WC1-1 to WC1-13). All bovine WC1 proteins can serve as coreceptors for the TCR in a tyrosine phosphorylation dependent manner, and some are required for the γδ T cell response to Leptospira. We hypothesized that individual WC1 receptors encode Ag specificity via coligation of bacteria with the γδ TCR. SRCR domain binding was directly correlated with γδ T cell response, as WC1-3 SRCR domains from Leptospira-responsive cells, but not WC1-4 SRCR domains from Leptospira-nonresponsive cells, bound to multiple serovars of two Leptospira species, L. borgpetersenii, and L. interrogans. Three to five of eleven WC1-3 SRCR domains, but none of the eleven WC1-4 SRCR domains, interacted with Leptospira spp. and Borrelia burgdorferi, but not with Escherichia coli or Staphylococcus aureus. Mutational analysis indicated that the active site for bacterial binding in one of the SRCR domains is composed of amino acids in three discontinuous regions. Recombinant WC1 SRCR domains with the ability to bind leptospires inhibited Leptospira growth. Our data suggest that WC1 gene arrays play a multifaceted role in the γδ T cell response to bacteria, including acting as hybrid pattern recognition receptors and TCR coreceptors, and they may function as antimicrobials.
Collapse
Affiliation(s)
- Haoting Hsu
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA 01003
| | - Chuang Chen
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA 01003
| | - Ariel Nenninger
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and
| | - Lauren Holz
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and
| | - Cynthia L Baldwin
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA 01003
| | - Janice C Telfer
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA 01003
| |
Collapse
|
19
|
Baldwin CL, Telfer JC. The bovine model for elucidating the role of γδ T cells in controlling infectious diseases of importance to cattle and humans. Mol Immunol 2014; 66:35-47. [PMID: 25547715 DOI: 10.1016/j.molimm.2014.10.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 10/22/2014] [Accepted: 10/24/2014] [Indexed: 01/29/2023]
Abstract
There are several instances of co-investigation and related discoveries and achievements in bovine and human immunology; perhaps most interesting is the development of the BCG vaccine, the tuberculin skin test and the more recent interferon-gamma test that were developed first in cattle to prevent and diagnosis bovine tuberculosis and then applied to humans. There are also a number of immune-physiological traits that ruminant share with humans including the development of their immune systems in utero which increases the utility of cattle as a model for human immunology. These are reviewed here with a particular focus on the use of cattle to unravel γδ T cell biology. Based on the sheer number of γδ T cells in this γδ T cell high species, it is reasonable to expect γδ T cells to play an important role in protective immune responses. For that reason alone cattle may provide good models for elucidating at least some of the roles γδ T cells play in protective immunity in all species. This includes fundamental research on γδ T cells as well as the responses of ruminant γδ T cells to a variety of infectious disease situations including to protozoan and bacterial pathogens. The role that pattern recognition receptors (PRR) play in the activation of γδ T cells may be unique relative to αβ T cells. Here we focus on that of the γδ T cell specific family of molecules known as WC1 or T19 in ruminants, which are part of the CD163 scavenger receptor cysteine rich (SRCR) family that includes SCART1 and SCART2 expressed on murine γδ T cells. We review the evidence for WC1 being a PRR as well as an activating co-receptor and the role that γδ T cells bearing these receptors play in immunity to leptospirosis and tuberculosis. This includes the generation of memory responses to vaccines, thereby continuing the tradition of co-discovery between cattle and humans.
Collapse
Affiliation(s)
- Cynthia L Baldwin
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst 01003, United States.
| | - Janice C Telfer
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst 01003, United States.
| |
Collapse
|
20
|
Herzig CTA, Mailloux VL, Baldwin CL. Spectratype analysis of the T cell receptor δ CDR3 region of bovine γδ T cells responding to leptospira. Immunogenetics 2014; 67:95-109. [PMID: 25502871 DOI: 10.1007/s00251-014-0817-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 11/16/2014] [Indexed: 01/13/2023]
Abstract
Gamma delta T cells comprise the majority of blood T cells in ruminants at birth and remain at high levels for several years with most expressing the WC1 co-receptor. A subpopulation of Bos taurus WC1(+) cells expressing a restricted set of WC1 molecules respond immediately by proliferation and interferon-γ production to leptospira following vaccination, preceding the response by CD4 T cells. Our goal is to define the γδ T cell recognition elements involved. Previously, we showed that the responding cells employed a variety of TRDV genes indicating that the CDR1 and CDR2 of TCRδ could vary and may not be principally involved in antigen specificity. Murine and human γδ T cells bind T22 and self lipids through their CDR3δ. Like mice, cattle use up to five TRDD genes in a single CDR3δ adding flexibility to length and configuration for antigen binding. Here, we used spectratyping to evaluate the CDR3δ of leptospira-responsive cells. Little or no compartmentalization of CDR3δ was found for antigen-responsive cells that incorporated TRDV1, TRDV2, or TRDV3 even though they comprise the majority of the leptospira-responding population. Compartmentalization occurred for TRDV4-containing transcripts and was maintained over time and among cattle. However, no common amino acid motif was apparent in those CDR3δ sequences, although a bias in D gene usage occurred. We hypothesize that the restricted set of WC1 co-receptors expressed by the responding cells may lend specificity to the response through their ability to bind bacteria facilitating interaction of various TCRs with bacterial components resulting in cross-linking and activation.
Collapse
Affiliation(s)
- Carolyn T A Herzig
- Department of Veterinary and Animal Sciences, University of Massachusetts, Integrated Sciences Building, 661 N. Pleasant St, Amherst, MA, 01003, USA
| | | | | |
Collapse
|
21
|
Baldwin CL, Hsu H, Chen C, Palmer M, McGill J, Waters WR, Telfer JC. The role of bovine γδ T cells and their WC1 co-receptor in response to bacterial pathogens and promoting vaccine efficacy: A model for cattle and humans. Vet Immunol Immunopathol 2014; 159:144-55. [DOI: 10.1016/j.vetimm.2014.02.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
22
|
McGill JL, Sacco RE, Baldwin CL, Telfer JC, Palmer MV, Ray Waters W. The role of gamma delta T cells in immunity to Mycobacterium bovis infection in cattle. Vet Immunol Immunopathol 2014; 159:133-43. [DOI: 10.1016/j.vetimm.2014.02.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
23
|
Chen C, Hsu H, Hudgens E, Telfer JC, Baldwin CL. Signal transduction by different forms of the γδ T cell-specific pattern recognition receptor WC1. THE JOURNAL OF IMMUNOLOGY 2014; 193:379-90. [PMID: 24850725 DOI: 10.4049/jimmunol.1400168] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
WC1 coreceptors are scavenger receptor cysteine-rich (SRCR) family members, related to T19 in sheep, SCART in mice, and CD163c-α in humans, and form a 13-member subfamily in cattle exclusively expressed on γδ T cells. Subpopulations of γδ T cells are defined by anti-WC1 mAbs and respond to different pathogen species accordingly. In this study, variegated WC1 gene expression within subpopulations and differences in signaling and cell activation due to endodomain sequences are described. The endodomains designated types I to III differ by a 15- or 18-aa insert in type II and an additional 80 aa containing an additional eight tyrosines for type III. Anti-WC1 mAbs enhanced cell proliferation of γδ T cells when cross-linked with the TCR regardless of the endodomain sequences. Chimeric molecules of human CD4 ectodomain with WC1 endodomains transfected into Jurkat cells showed that the tyrosine phosphorylation of the type II was the same as that of the previously reported archetypal sequence (type I) with only Y24EEL phosphorylated, whereas for type III only Y199DDV and Y56TGD were phosphorylated despite conservation of the Y24EEL/Y24QEI and Y199DDV/I tyrosine motifs among the three types. Time to maximal phosphorylation was more rapid with type III endodomains and sustained longer. Differences in tyrosine phosphorylation were associated with differences in function in that cross-linking of type III chimeras with TCR resulted in significantly greater IL-2 production. Identification of differences in the signal transduction through the endodomains of WC1 contributes to understanding the functional role of the WC1 coreceptors in the γδ T cell responses.
Collapse
Affiliation(s)
- Chuang Chen
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and
| | - Haoting Hsu
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA 01003
| | - Edward Hudgens
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and
| | - Janice C Telfer
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA 01003
| | - Cynthia L Baldwin
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003; and Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA 01003
| |
Collapse
|
24
|
McGill JL, Sacco RE, Baldwin CL, Telfer JC, Palmer MV, Waters WR. Specific Recognition of Mycobacterial Protein and Peptide Antigens by γδ T Cell Subsets following Infection with VirulentMycobacterium bovis. THE JOURNAL OF IMMUNOLOGY 2014; 192:2756-69. [DOI: 10.4049/jimmunol.1302567] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
25
|
Abstract
Bovine herpesvirus 1 (BHV-1) infection is widespread and causes a variety of diseases. Although similar in many respects to the human immune response to human herpesvirus 1, the differences in the bovine virus proteins, immune system components and strategies, physiology, and lifestyle mean the bovine immune response to BHV-1 is unique. The innate immune system initially responds to infection, and primes a balanced adaptive immune response. Cell-mediated immunity, including cytotoxic T lymphocyte killing of infected cells, is critical to recovery from infection. Humoral immunity, including neutralizing antibody and antibody-dependent cell-mediated cytotoxicity, is important to prevention or control of (re-)infection. BHV-1 immune evasion strategies include suppression of major histocompatibility complex presentation of viral antigen, helper T-cell killing, and latency. Immune suppression caused by the virus potentiates secondary infections and contributes to the costly bovine respiratory disease complex. Vaccination against BHV-1 is widely practiced. The many vaccines reported include replicating and non-replicating, conventional and genetically engineered, as well as marker and non-marker preparations. Current development focuses on delivery of major BHV-1 glycoproteins to elicit a balanced, protective immune response, while excluding serologic markers and virulence or other undesirable factors. In North America, vaccines are used to prevent or reduce clinical signs, whereas in some European Union countries marker vaccines have been employed in the eradication of BHV-1 disease.
Collapse
|
26
|
McGill JL, Nonnecke BJ, Lippolis JD, Reinhardt TA, Sacco RE. Differential chemokine and cytokine production by neonatal bovine γδ T-cell subsets in response to viral toll-like receptor agonists and in vivo respiratory syncytial virus infection. Immunology 2013; 139:227-44. [PMID: 23368631 DOI: 10.1111/imm.12075] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 01/14/2013] [Accepted: 01/16/2013] [Indexed: 12/21/2022] Open
Abstract
γδ T cells respond to stimulation via toll-like receptors (TLR). Bovine γδ T cells express TLR3 and TLR7, receptors that are key for the recognition of viruses such as bovine respiratory syncytial virus (BRSV); however, responses of γδ T cells to stimulation via these receptors, and their role during viral infections, remains unclear. Here, we demonstrate that neonatal bovine γδ T cells exhibit robust chemokine and cytokine production in response to the TLR3 agonist, Poly(I:C), and the TLR7 agonist, Imiquimod. Importantly, we observe a similar phenotype in γδ T-cell subsets purified from calves infected with BRSV. Bovine γδ T cells are divided into subsets based upon their expression of WC1, and the response to TLR stimulation and viral infection differs between these subsets, with WC1.1(+) and WC1(neg) γδ T cells producing macrophage inflammatory protein-1α and granulocyte-macrophage colony-stimulating factor, and WC1.2(+) γδ T cells preferentially producing the regulatory cytokines interleukin-10 and transforming growth factor-β. We further report that the active vitamin D metabolite 1,25-dihydroxyvitamin D3 does not alter γδ T-cell responses to TLR agonists or BRSV. To our knowledge, this is the first characterization of the γδ T-cell response during in vivo BRSV infection and the first suggestion that WC1.1(+) and WC1(neg) γδ T cells contribute to the recruitment of inflammatory populations during viral infection. Based on our results, we propose that circulating γδ T cells are poised to rapidly respond to viral infection and suggest an important role for γδ T cells in the innate immune response of the bovine neonate.
Collapse
Affiliation(s)
- Jodi L McGill
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, Agricultural Research Service, Ames, IA 50010, USA.
| | | | | | | | | |
Collapse
|
27
|
Melville JM, Bischof RJ, Meeusen EN, Westover AJ, Moss TJM. Changes in fetal thymic immune cell populations in a sheep model of intrauterine inflammation. Reprod Sci 2012; 19:740-7. [PMID: 22421448 DOI: 10.1177/1933719111432873] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Intrauterine inflammation is a common antecedent of preterm birth and can alter the development of the fetal thymus, the site of development, and maturation of T lymphocytes. The effects of intrauterine inflammation on specific thymic T lymphocyte populations are largely unknown. We hypothesized that intrauterine inflammation would alter fetal thymic T cell populations. Immunohistochemistry was used to quantitate the relative proportions of thymic cortical and medullary cell populations in fetal sheep 7 days after intra-amniotic lipopolysaccharide (LPS) injection. The proportions of CD8⁺and MHC II⁺ cells in the fetal thymus were reduced in response to LPS. The ratio of CD4:CD8 cells was increased by LPS exposure. No changes were observed in the percentage of CD4⁺, γδ(WC1)⁺, CD45R⁺B cells, or CD44⁺ cells. These studies indicate that intrauterine inflammation impacts thymic composition of CD8 T cells and the development and/or activation of CD4 T cells in the fetal thymus.
Collapse
Affiliation(s)
- Jacqueline M Melville
- The Ritchie Centre, Monash Institute of Medical Research, Monash University, Clayton, Victoria, Australia.
| | | | | | | | | |
Collapse
|
28
|
Guzman E, Price S, Poulsom H, Hope J. Bovine γδ T cells: cells with multiple functions and important roles in immunity. Vet Immunol Immunopathol 2011; 148:161-7. [PMID: 21501878 DOI: 10.1016/j.vetimm.2011.03.013] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 03/01/2011] [Accepted: 03/05/2011] [Indexed: 12/01/2022]
Abstract
The γδ T-cell receptor (TCR)-positive lymphocytes are a major circulating lymphocyte population in cattle, especially in young calves. In contrast, human and mice have low levels of circulating γδ TCR(+) T cells (γδ T cells). The majority of the circulating γδ T cells in ruminants express the workshop cluster 1 (WC1) molecule and are of the phenotype WC1(+) CD2(-) CD4(-) CD8(-). WC1 is a 220000 molecular weight glycoprotein with homology to the scavenger receptor cysteine-rich (SRCR) family, closely related to CD163. The existence of 13 members in the bovine WC1 gene family has recently been demonstrated and although murine and human orthologues to WC1 genes exist, functional gene products have not been identified in species other than ruminants and pigs. Highly diverse TCRδ usage has been reported, with expanded variable genes in cattle compared to humans and mice. Differential γ chain usage is evident between populations of bovine γδ T cells, this may have implications for functionality. There is a growing body of evidence that WC1(+) γδ T cells are important in immune responses to mycobacteria and may have important roles in T cell regulation and antigen presentation. In this review, we will summarize recent observations in γδ T cell biology and the importance of γδ T cells in immune responses to mycobacterial infections in cattle.
Collapse
Affiliation(s)
- Efrain Guzman
- Institute for Animal Health, Division of Immunology, Compton, Newbury RG20 7NN, United Kingdom
| | | | | | | |
Collapse
|
29
|
Scavenger receptor WC1 contributes to the γδ T cell response to Leptospira. Mol Immunol 2011; 48:801-9. [PMID: 21227509 DOI: 10.1016/j.molimm.2010.12.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2010] [Revised: 12/01/2010] [Accepted: 12/02/2010] [Indexed: 11/21/2022]
Abstract
WC1 molecules are exclusively expressed on the surface of γδ T cells. They belong to the scavenger receptor cysteine-rich (SRCR) superfamily and are encoded by a multi-gene family. WC1 molecules have been grouped on the basis of antibody reactivity. The expression of WC1 molecules from these serologically defined groups is correlated with differences in γδ T cell responses. The expression of receptors within the WC1.1 group correlates with the capacity of γδ T cells to respond to Leptospira antigen. In this study, we used RNA interference to directly investigate the role of WC1 expression in the response to Leptospira borgpetersenii. We found that when three out of thirteen WC1 gene products were downregulated by RNA interference, γδ T cell proliferation and IFN-γ production in response to Leptospira antigen was significantly reduced. Our data demonstrate that specific receptors in the WC1 family directly participate in Leptospira recognition and/or activation of γδ T cells.
Collapse
|
30
|
D'Alessandro A, Zolla L, Scaloni A. The bovine milk proteome: cherishing, nourishing and fostering molecular complexity. An interactomics and functional overview. MOLECULAR BIOSYSTEMS 2010; 7:579-97. [PMID: 20877905 DOI: 10.1039/c0mb00027b] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Bovine milk represents an essential source of nutrients for lactating calves and a key raw material for human food preparations. A wealth of data are present in the literature dealing with massive proteomic analyses of milk fractions and independent targeted studies on specific groups of proteins, such as caseins, globulins, hormones and cytokines. In this study, we merged data from previous investigations to compile an exhaustive list of 573 non-redundant annotated protein entries. This inventory was exploited for integrated in silico studies, including functional GO term enrichment (FatiGO/Babelomics), multiple pathway and network analyses. As expected, most of the milk proteins were grouped under pathways/networks/ontologies referring to nutrient transport, lipid metabolism and objectification of the immune system response. Notably enough, another functional family was observed as the most statistically significant one, which included proteins involved in the induction of cellular proliferation processes as well as in anatomical and haematological system development. Although the latter function for bovine milk proteins has long been postulated, studies reported so far mainly focused on a handful of molecules and missed the whole overview resulting from an integrated holistic analysis. A preliminary map of the bovine milk proteins interactome was also built up, which will be refined in future as result of the widespread use of quantitative methods in protein interaction studies and consequent reduction of false-positives within associated databases.
Collapse
Affiliation(s)
- Angelo D'Alessandro
- Department of Environmental Sciences, University of Tuscia, Largo dell'Università, SNC, 01100 Viterbo, Italy
| | | | | |
Collapse
|
31
|
Ackermann MR, Derscheid R, Roth JA. Innate immunology of bovine respiratory disease. Vet Clin North Am Food Anim Pract 2010; 26:215-28. [PMID: 20619180 PMCID: PMC2904317 DOI: 10.1016/j.cvfa.2010.03.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Mark R Ackermann
- Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA 50011-1250, USA.
| | | | | |
Collapse
|