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Mau A, Chiu ES, Armien A, Johnson LR, Moore PF, Vernau W. Antemortem cytologic diagnosis of pulmonary Langerhans cell histiocytosis in a cat. Vet Clin Pathol 2023; 52:691-697. [PMID: 37914537 DOI: 10.1111/vcp.13304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/22/2023] [Accepted: 09/05/2023] [Indexed: 11/03/2023]
Abstract
Feline pulmonary Langerhans cell histiocytosis (FPLCH) is a rare histiocytic proliferative disease of middle-aged to older domestic cats. Langerhans cells in the terminal airways proliferate and infiltrate the interstitium and the airways to a lesser degree, widely effacing normal parenchyma. Historically, definitive diagnosis has required postmortem evaluation where pulmonary lesions have a classic gross and histologic morphology. Here, we present the first documented antemortem diagnosis of FPLCH using bronchoalveolar lavage (BAL) cytology and immunocytochemistry (ICC) in a 9-year-old British shorthair mix. The cat had a 3-month history of respiratory difficulty that was refractory to steroids and antimicrobials. Pulmonary radiographs had marked diffuse changes with a complex bronchointerstitial and micronodular pattern. BAL cytology revealed neutrophilic inflammation and markedly increased histiocytes with morphology distinct from typical pulmonary macrophages. ICC characterized histiocytes as CD1a+ /E-cadherin+ /CD11b- /PanCK- , consistent with a Langerhans cell phenotype. The cat was humanely euthanized due to poor prognosis and presented for necropsy. Gross, histopathologic, immunophenotypic, and ultrastructural findings confirmed a diagnosis of FPLCH. Proliferative cells were E-cadherin+ /Iba-1+ /CD18+ /CD1a+ /CD5+ /MHCII+ /CD204- /CD4- ; transmission electron microscopy identified the presence of Birbeck granules in the proliferating histiocytes, consistent with previous reports of FPLCH.
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Affiliation(s)
- Alex Mau
- William R. Pritchard Veterinary Medical Teaching Hospital, University of California-Davis School of Veterinary Medicine, Davis, California, USA
| | - Elliott S Chiu
- William R. Pritchard Veterinary Medical Teaching Hospital, University of California-Davis School of Veterinary Medicine, Davis, California, USA
| | - Anibal Armien
- California Animal Health and Food Safety Laboratory, University of California-Davis School of Veterinary Medicine, Davis, California, USA
| | - Lynelle R Johnson
- Department of Medicine and Epidemiology, University of California-Davis School of Veterinary Medicine, Davis, California, USA
| | - Peter F Moore
- Department of Pathology, Microbiology and Immunology, University of California-Davis School of Veterinary Medicine, Davis, California, USA
| | - William Vernau
- Department of Pathology, Microbiology and Immunology, University of California-Davis School of Veterinary Medicine, Davis, California, USA
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2
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Hoshino T, Murayama N, Yamagishi K, Okado Y, Iwai H, Shirai K, Hosaka S, Moore PF, Nagata M. Clinical efficacy of recombinant canine interferon-gamma therapy in dogs with cutaneous epitheliotropic T-cell lymphoma. Vet Dermatol 2023; 34:460-467. [PMID: 37006127 DOI: 10.1111/vde.13161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 12/20/2022] [Accepted: 02/19/2023] [Indexed: 04/04/2023]
Abstract
BACKGROUND The antitumour effects of interferon-gamma (IFN-γ) in humans with cutaneous epitheliotropic T-cell lymphoma (CETCL) have been described; however, the efficacy of IFN-γ in dogs has not been investigated. HYPOTHESIS/OBJECTIVES The aim of this study was to evaluate the efficacy of recombinant canine IFN-γ (rCaIFN-γ) therapy in dogs with CETCL. ANIMALS Twenty dogs with CETCL recruited from seven veterinary clinics were enrolled in the study. MATERIALS AND METHODS Fifteen dogs were treated with rCaIFN-γ, and five control dogs were treated with prednisolone. We evaluated survival time, skin lesions (erythema, nodules, ulcers and bleeding), pruritus and general condition (sleep, appetite and body weight). In the rCaIFN-γ group, a questionnaire regarding the therapy was administered to owners after the dogs died. RESULTS No significant differences existed in the median survival time between the rCaIFN-γ and control groups (log-rank test: p = 0.2761, Wilcoxon's rank sum test: p = 0.4444). However, there were significant differences in ulcer, bleeding, pruritus, sleep, appetite and body weight between the groups (Wilcoxon-Mann-Whitney U-test: p = 0.0023, p = 0.0058, p = 0.0005, p = 0.0191, p = 0.0306 and p = 0.0306, respectively). Two (40%) of five dogs were euthanised in the control group, compared with none in the rCaIFN-γ group. Fourteen questionnaires were collected, and owners reported that they were satisfied with the rCaIFN-γ treatment. CONCLUSIONS AND CLINICAL RELEVANCE Although the median survival time was not prolonged, rCaIFN-γ could be helpful in maintaining good quality of life for dogs with CETCL.
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Affiliation(s)
- Tomoya Hoshino
- Department of Dermatology, Veterinary Specialists Emergency Centre, Saitama, Japan
| | | | | | | | | | | | | | - Peter F Moore
- Department of Veterinary Pathology, University of California, Davis, California, USA
| | - Masahiko Nagata
- Department of Dermatology, Veterinary Specialists Emergency Centre, Saitama, Japan
- Dermatology Services for Dogs and Cats, Tokyo, Japan
- ASC, Tokyo, Japan
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3
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Eschke M, Moore PF, Chang H, Alber G, Keller SM. Canine peripheral blood TCRαβ T cell atlas: Identification of diverse subsets including CD8A + MAIT-like cells by combined single-cell transcriptome and V(D)J repertoire analysis. Front Immunol 2023; 14:1123366. [PMID: 36911660 PMCID: PMC9995359 DOI: 10.3389/fimmu.2023.1123366] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/19/2023] [Indexed: 02/25/2023] Open
Abstract
The dog is valued as a companion animal and increasingly recognized as a model for human disorders. Given the importance of T cells in health and disease, comprehensive knowledge of canine T cells can contribute to our understanding of pathogenesis mechanisms and inform the development of new treatment strategies. However, the diversity of canine T cells is still poorly understood mainly due to the lack of species-reactive antibodies for use in flow cytometry. The aim of this study was to generate a detailed atlas of peripheral blood TCRαβ+ T cells of healthy dogs using single-cell RNA-sequencing (scRNAseq) combined with immune repertoire sequencing. A total of 22 TCRαβ+ T cell clusters were identified, which were classified into three major groups: CD4-dominant (11 clusters), CD8A-dominant (8 clusters), and CD4/CD8A-mixed (3 clusters). Based on differential gene expression, distinct differentiation states (naïve, effector, memory, exhausted) and lineages (e.g. CD4 T helper and regulatory T cells) could be distinguished. Importantly, several T cell populations were identified, which have not been described in dogs before. Of particular note, our data provide first evidence for the existence of canine mucosa-associated invariant T cell (MAIT)-like cells, representing one of three newly identified FCER1G+ innate-like CD8A+ T cell populations in the peripheral blood of healthy dogs. In conclusion, using scRNAseq combined with immune repertoire sequencing we were able to resolve canine TCRαβ+ T cell populations at unprecedented resolution. The peripheral blood TCRαβ+ T cell atlas of healthy dogs generated here represents an important reference data set for future studies and is of relevance for identifying new targets for T cell-specific therapies.
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Affiliation(s)
- Maria Eschke
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Peter F Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, United States
| | - Haiyang Chang
- Department of Mathematics and Statistics, University of Guelph, Guelph, ON, Canada
| | - Gottfried Alber
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Stefan M Keller
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, United States
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4
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Moore PF. Histiocytic Diseases. Vet Clin North Am Small Anim Pract 2023; 53:121-140. [DOI: 10.1016/j.cvsm.2022.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Keating MK, Rosenkrantz WS, Keller SM, Moore PF. Evaluation of clonality from multiple anatomic sites in canine epitheliotropic T cell lymphoma. Vet Dermatol 2022; 33:559-567. [PMID: 35876313 DOI: 10.1111/vde.13106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/11/2022] [Accepted: 05/11/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Canine epitheliotropic cutaneous T-cell lymphoma (eCTCL) is thought to represent a disease homologue to human mycosis fungoides (MF). In human MF, neoplastic cells are phenotypically consistent with resident effector memory T cells, a population that remains for an extended period within tissue without circulating. Dogs with eCTCL often present with lesions in multiple locations, raising the question of whether the neoplasm is of the same T-cell subpopulation or not. OBJECTIVES To characterize the antigen receptor gene rearrangements of lymphocytes from skin and blood of dogs with eCTCL to determine if neoplastic clones are identical. ANIMALS Fourteen dogs with eCTCL. MATERIALS AND METHODS Histological and immunohistochemical examination, and PCR for antigen receptor rearrangement (PARR) for T-cell receptor gamma (TRG) performed on multiple cutaneous biopsy samples and blood. RESULTS All skin biopsies contained cluster of differentiation (CD)3-positive neoplastic lymphocytes. Within individual dogs, all skin biopsies revealed identical TRG clonality profiles, suggesting that the same neoplastic clone was present in all sites. In the blood, a matching clone was found in six of 14 dogs, a unique clone was observed in nine of 14 dogs, and no clone was detected in two of 14 dogs. CONCLUSIONS These findings show that canine eCTCL lesions in multiple locations harbour the same neoplastic clone, neoplastic lymphocytes do not remain fixed to the skin and instead can circulate via blood, differing clones can be identified in skin versus blood, and circulating neoplastic cells can be detected without lymphocytosis.
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Affiliation(s)
| | | | - Stefan M Keller
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California-Davis, Davis, CA, USA
| | - Peter F Moore
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California-Davis, Davis, CA, USA
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6
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Kondratjeva J, Julien F, Coutelier C, Humeau L, Moog F, Combarros D, Fourquaux I, Pressanti C, Delverdier M, Moore PF, Cadiergues MC. Cutaneous epitheliotropic T-cell lymphoma in a donkey - a case report. BMC Vet Res 2022; 18:267. [PMID: 35821128 PMCID: PMC9275177 DOI: 10.1186/s12917-022-03365-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 06/28/2022] [Indexed: 05/31/2023] Open
Abstract
Background Cutaneous epitheliotropic T-cell lymphoma is a malignant tumour of the skin already reported in humans, dogs, cats, horses, and other species, but not previously in donkeys. The standard diagnosis is based on clinical, morphological and immunophenotypic data. Differentiation of malignant versus benign proliferation of lymphocytes is crucial; in ambiguous cases T-cell receptor gamma (TRG) molecular clonality should be tested. In the present paper, we report a case of mycosis fungoides diagnosed in a donkey whose diagnosis was based on clinical, histological and immunohistochemical aspects and a positive TRG clonality test. Case presentation A twenty-five-year-old donkey gelding was referred with a mildly pruritic, generalised and severe exfoliative dermatosis. Otherwise, the animal was clinically healthy, though mildly underweight. Dermatological examination revealed severe generalised alopecic and exfoliative dermatitis, occasionally eroded, with high number of large, thin, greyish scales. All mucocutaneous junctions except the hoofs were affected. Ectoparasites and dermatophytes were ruled out. The complete blood count and blood smear evaluation revealed mild normocytic normochromic anemia. The biochemistry panel showed mild hyperproteinemia with albumin within the normal range. Protein electrophoresis showed moderate polyclonal hypergammaglobulinemia. Histological findings were characterised by interface dermatitis with massive exocytosis in the epidermis of a homogenous population of lymphoid cells showing atypia. Clusters of neoplastic cells were present within the epidermis forming Pautrier “microabscesses”. These findings are consistent with cutaneous epitheliotropic lymphoma. Immunohistochemical staining revealed uniform labelling of the neoplastic cells for CD3, and lack of expression of CD20 (a B cell lineage associated marker). Molecular clonality PCR (PARR) was performed using equine TRG primers; this revealed a clonal rearrangement in a heavy polyclonal background. Transmission electronic microscopy showed multiple lymphocytes with convoluted or cerebriform nuclei. Conclusions This case report provides the first evidence of clinical, histopathological, immunophenotypic features, electron microscopy findings and molecular analysis of a cutaneous epitheliotropic T-cell lymphoma (mycosis fungoides) in a donkey. Our observations suggest that cutaneous T-cell lymphoma should be included in the differential diagnoses of exfoliative dermatitis, even those progressing in a chronic pattern and/or with few or no pruritus.
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Affiliation(s)
| | | | - Céline Coutelier
- Small Animal and Equine Hospital, ENVT, Université de Toulouse, Toulouse, France
| | - Louis Humeau
- Small Animal and Equine Hospital, ENVT, Université de Toulouse, Toulouse, France
| | - Fabien Moog
- Small Animal and Equine Hospital, ENVT, Université de Toulouse, Toulouse, France
| | - Daniel Combarros
- Small Animal and Equine Hospital, ENVT, Université de Toulouse, Toulouse, France.,INFINITy, Université de Toulouse, CNRS, UPS, InsermToulouse, France
| | - Isabelle Fourquaux
- Centre de Microscopie Electronique Appliquée À La Biologie, Université de Toulouse, Toulouse, France
| | - Charline Pressanti
- Small Animal and Equine Hospital, ENVT, Université de Toulouse, Toulouse, France.,INFINITy, Université de Toulouse, CNRS, UPS, InsermToulouse, France
| | - Maxence Delverdier
- Basic Sciences Department, Université de Toulouse, ENVT, Toulouse, France.,IHAP, Université de Toulouse, INRAE, ENVT, Toulouse, France
| | - Peter F Moore
- Leukocyte Antigen Biology Laboratory, UC Davis, VM PMI, Davis, CA, USA
| | - Marie Christine Cadiergues
- Small Animal and Equine Hospital, ENVT, Université de Toulouse, Toulouse, France. .,INFINITy, Université de Toulouse, CNRS, UPS, InsermToulouse, France.
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7
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Zhang S, Black RG, Kohli K, Hayes BJ, Miller C, Koehne A, Schroeder BA, Abrams K, Schulte BC, Alexiev BA, Heimberger AB, Zhang A, Jing W, Ng JCK, Shinglot H, Seguin B, Salter AI, Riddell SR, Jensen MC, Gottschalk S, Moore PF, Torok-Storb B, Pollack SM. B7-H3 Specific CAR T Cells for the Naturally Occurring, Spontaneous Canine Sarcoma Model. Mol Cancer Ther 2022; 21:999-1009. [PMID: 35405743 PMCID: PMC9381119 DOI: 10.1158/1535-7163.mct-21-0726] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 01/31/2022] [Accepted: 03/31/2022] [Indexed: 01/07/2023]
Abstract
One obstacle for human solid tumor immunotherapy research is the lack of clinically relevant animal models. In this study, we sought to establish a chimeric antigen receptor (CAR) T-cell treatment model for naturally occurring canine sarcomas as a model for human CAR T-cell therapy. Canine CARs specific for B7-H3 were constructed using a single-chain variable fragment derived from the human B7-H3-specific antibody MGA271, which we confirmed to be cross-reactive with canine B7-H3. After refining activation, transduction, and expansion methods, we confirmed target killing in a tumor spheroid three-dimensional assay. We designed a B7-H3 canine CAR T-cell and achieved consistently high levels of transduction efficacy, expansion, and in vitro tumor killing. Safety of the CAR T cells were confirmed in two purposely bred healthy canine subjects following lymphodepletion by cyclophosphamide and fludarabine. Immune response, clinical parameters, and manifestation were closely monitored after treatments and were shown to resemble that of humans. No severe adverse events were observed. In summary, we demonstrated that similar to human cancers, B7-H3 can serve as a target for canine solid tumors. We successfully generated highly functional canine B7-H3-specific CAR T-cell products using a production protocol that closely models human CAR T-cell production procedure. The treatment regimen that we designed was confirmed to be safe in vivo. Our research provides a promising direction to establish in vitro and in vivo models for immunotherapy for canine and human solid tumor treatment.
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Affiliation(s)
- Shihong Zhang
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - R. Graeme Black
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Karan Kohli
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Brian J. Hayes
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Cassandra Miller
- Comparative Medicine, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Amanda Koehne
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Brett A. Schroeder
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.,NCI, NIH, Bethesda, Maryland
| | - Kraig Abrams
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Brian C. Schulte
- Department of Medicine, University of California San Francisco, San Francisco, California
| | | | - Amy B. Heimberger
- Department of Neurologic Surgery, Northwestern University, Chicago, Illinois
| | - Ali Zhang
- Department of Medicine, Northwestern University, Chicago, Illinois
| | - Weiqing Jing
- Department of Medicine, Northwestern University, Chicago, Illinois
| | | | - Himaly Shinglot
- Department of Medicine, Northwestern University, Chicago, Illinois
| | - Bernard Seguin
- Colorado State University, Flint Animal Cancer Center, Fort Collins, Colorado
| | - Alexander I. Salter
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Stanley R. Riddell
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.,Lyell Immunopharma, Seattle, Washington
| | - Michael C. Jensen
- Division of Hematology and Oncology, Seattle Children's Hospital, Seattle, Washington
| | - Stephen Gottschalk
- Department of Bone Marrow Transplantation and Cellular Therapy, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Peter F. Moore
- Department of Veterinary Medicine, University of California Davis, Davis, California
| | - Beverly Torok-Storb
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Seth M. Pollack
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.,Department of Medicine, Northwestern University, Chicago, Illinois.,Corresponding Author: Seth M. Pollack, Oncology, Northwestern University, 303 E. Superior St. #3-115, Chicago, IL 60611. E-mail:
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8
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Hullsiek R, Li Y, Snyder KM, Wang S, Di D, Borgatti A, Lee C, Moore PF, Zhu C, Fattori C, Modiano JF, Wu J, Walcheck B. Examination of IgG Fc Receptor CD16A and CD64 Expression by Canine Leukocytes and Their ADCC Activity in Engineered NK Cells. Front Immunol 2022; 13:841859. [PMID: 35281028 PMCID: PMC8907477 DOI: 10.3389/fimmu.2022.841859] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/31/2022] [Indexed: 12/15/2022] Open
Abstract
Human natural killer (NK) cells can target tumor cells in an antigen-specific manner by the recognition of cell bound antibodies. This process induces antibody-dependent cell-mediated cytotoxicity (ADCC) and is exclusively mediated by the low affinity IgG Fc receptor CD16A (FcγRIIIA). Exploiting ADCC by NK cells is a major area of emphasis for advancing cancer immunotherapies. CD64 (FcγRI) is the only high affinity IgG FcR and it binds to the same IgG isotypes as CD16A, but it is not expressed by human NK cells. We have generated engineered human NK cells expressing recombinant CD64 with the goal of increasing their ADCC potency. Preclinical testing of this approach is essential for establishing efficacy and safety of the engineered NK cells. The dog provides particular advantages as a model, which includes spontaneous development of cancer in the setting of an intact and outbred immune system. To advance this immunotherapy model, we cloned canine CD16A and CD64 and generated specific mAbs. We report here for the first time the expression patterns of these FcγRs on dog peripheral blood leukocytes. CD64 was expressed by neutrophils and monocytes, but not lymphocytes, while canine CD16A was expressed at high levels by a subset of monocytes and lymphocytes. These expression patterns are similar to that of human leukocytes. Based on phenotypic characteristics, the CD16A+ lymphocytes consisted of T cells (CD3+ CD8+ CD5dim α/β TCR+) and NK cells (CD3− CD5− CD94+), but not B cells. Interestingly, the majority of canine CD16A+ lymphocytes were from the T cell population. Like human CD16A, canine CD16A was downregulated by a disintegrin and metalloproteinase 17 (ADAM17) upon leukocyte activation, revealing a conserved means of regulation. We also directly demonstrate that both canine CD16A and CD64 can induce ADCC when expressed in the NK cell line NK-92. These findings pave the way to engineering canine NK cells or T cells with high affinity recombinant canine CD64 to maximize ADCC and to test their safety and efficacy to benefit both humans and dogs.
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Affiliation(s)
- Robert Hullsiek
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN, United States
| | - Yunfang Li
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN, United States
| | - Kristin M Snyder
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN, United States.,Animal Cancer Care and Research Program, University of Minnesota, St. Paul, MN, United States
| | - Sam Wang
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN, United States
| | - Da Di
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN, United States
| | - Antonella Borgatti
- Animal Cancer Care and Research Program, University of Minnesota, St. Paul, MN, United States.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States.,Center for Immunology, University of Minnesota, Minneapolis, MN, United States.,Clinical Investigation Center, University of Minnesota, St. Paul, MN, United States
| | - Chae Lee
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN, United States
| | - Peter F Moore
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California, Davis, CA, United States
| | - Cong Zhu
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN, United States
| | - Chiara Fattori
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States
| | - Jaime F Modiano
- Animal Cancer Care and Research Program, University of Minnesota, St. Paul, MN, United States.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States.,Center for Immunology, University of Minnesota, Minneapolis, MN, United States.,Stem Cell Institute, University of Minnesota, Minneapolis, MN, United States.,Institute for Engineering in Medicine, University of Minnesota, Minneapolis, MN, United States.,Department of Laboratory Medicine and Pathology, School of Medicine, University of Minnesota, Minneapolis, MN, United States
| | - Jianming Wu
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN, United States.,Animal Cancer Care and Research Program, University of Minnesota, St. Paul, MN, United States.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States
| | - Bruce Walcheck
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, MN, United States.,Animal Cancer Care and Research Program, University of Minnesota, St. Paul, MN, United States.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States.,Center for Immunology, University of Minnesota, Minneapolis, MN, United States.,Stem Cell Institute, University of Minnesota, Minneapolis, MN, United States
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9
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Onishi-Sakamoto S, Makishi K, Takami K, Asahina R, Maeda S, Nagata M, Moore PF, Ide K, Nishifuji K. Narrow-band ultraviolet B therapy attenuates cutaneous T-cell responses in hapten-induced, experimental contact dermatitis in beagles. Vet Dermatol 2021; 32:605-e161. [PMID: 34796565 DOI: 10.1111/vde.13035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND In human medicine, narrow-band ultraviolet B (NB-UVB) phototherapy has been used to treat various T-cell-mediated skin diseases. However, the effect of NB-UVB on inflamed canine skin remains uncertain. OBJECTIVES To investigate the effect of NB-UVB phototherapy on the skin of dogs with hapten-induced contact dermatitis. ANIMALS Seven healthy beagles without skin problems. METHODS AND MATERIALS Dogs were irradiated with varying doses of NB-UVB to determine the minimal erythema dose (MED). After determining the MEDs of six dogs (excluding one of the seven whose skin did not show a visible reaction), we investigated the effect of NB-UVB on their inflamed skin by topically applying 2,4-dinitrochlorobenzene (DNCB), which causes type 1 helper T cell (Th1)- and cytotoxic T-cell (Tc)1-induced skin inflammation. We then irradiated the skin with NB-UVB. We analysed the treated skin samples via histopathological and immunohistochemical methods, and TdT-mediated dUTP nick-end labelling (TUNEL) to demonstrate apoptotic cells. We also analysed the cytokine gene transcription via real-time quantitative reverse transcription PCR. RESULTS The NB-UVB MEDs caused mild inflammatory changes yet no severe epidermal exfoliations in the irradiated skin. In DNCB-treated skin irradiated by the NB-UVB MEDs, TUNEL-positive dermal apoptotic cells were increased significantly compared with those of DNCB-treated, nonirradiated skin. INF-γ and TNF-α transcription levels in DNCB-treated, irradiated skin were significantly lower than those in the DNCB-treated, nonirradiated skin. CONCLUSION AND CLINICAL RELEVANCE Phototherapy using NB-UVB MEDs attenuated cutaneous Th1 and Tc1 cytokine responses with minimal skin damage in a canine model of hapten-induced contact dermatitis.
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Affiliation(s)
- Saki Onishi-Sakamoto
- Laboratory of Veterinary Internal Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Kiichi Makishi
- Laboratory of Veterinary Internal Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | | | - Ryota Asahina
- Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sadatoshi Maeda
- Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | | | - Peter F Moore
- School of Veterinary Medicine, University of California Davis, Davis, CA, USA
| | - Kaori Ide
- Laboratory of Veterinary Internal Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Koji Nishifuji
- Laboratory of Veterinary Internal Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
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10
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Radtanakatikanon A, Moore PF, Keller SM, Vernau W. Novel clonality assays for T cell lymphoma in cats targeting the T cell receptor beta, T cell receptor delta, and T cell receptor gamma loci. J Vet Intern Med 2021; 35:2865-2875. [PMID: 34929760 PMCID: PMC8692208 DOI: 10.1111/jvim.16288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/11/2021] [Accepted: 10/13/2021] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND T cell clonality assays in veterinary medicine currently target only the T cell receptor gamma (TRG) locus. Existing assays have suboptimal sensitivity because of insufficient primer coverage of all possible rearrangements. OBJECTIVE Develop higher sensitivity clonality assays targeting the TRG, delta (TRD), and beta (TRB) loci in cats. ANIMALS Cats with histopathologically confirmed lymphoma (n = 89), non-lymphoma (n = 35), and possible hepatic small cell lymphoma (n = 31). METHODS Molecular clonality assay development utilizing our recently reported topology and expressed repertoire data of the T cell receptor loci in cats. Determination of clonality status of lymphoma, non lymphoma, and possible hepatic small cell lymphoma samples, and calculation of assay sensitivity and specificity. RESULTS The new multiplex TRG assay yielded the highest sensitivity (95.5%). All assays yielded 100% specificity except for the new multiplex TRG assay (97.3%). The combination of the new TRG and TRB assays yielded sensitivity of 98.9% and specificity of 97.0%. The new TRG assay detected clonality in 17/31 possible small cell lymphoma livers, whereas an existing TRG assay detected clonality in 6/31 livers. CONCLUSIONS AND CLINICAL IMPORTANCE The assessment of multiple T cell loci compensates for the potential shortcomings of individual assays. Using a combination of molecular clonality assays will increase the overall sensitivity for the diagnosis of T-cell lymphoma in cats, especially intestinal, and hepatic small cell lymphoma. Hepatic small cell lymphomas detected by the new TRG assay utilized rarely expressed V and J genes not recognized by previous assays, likely indicating unique biology of hepatic small cell lymphoma in cats.
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Affiliation(s)
- Araya Radtanakatikanon
- Department of Pathology, Microbiology and ImmunologySchool of Veterinary Medicine, University of CaliforniaDavisCaliforniaUSA
- Department of Pathology, Faculty of Veterinary ScienceChulalongkorn UniversityBangkokThailand
| | - Peter F. Moore
- Department of Pathology, Microbiology and ImmunologySchool of Veterinary Medicine, University of CaliforniaDavisCaliforniaUSA
| | - Stefan M. Keller
- Department of Pathology, Microbiology and ImmunologySchool of Veterinary Medicine, University of CaliforniaDavisCaliforniaUSA
| | - William Vernau
- Department of Pathology, Microbiology and ImmunologySchool of Veterinary Medicine, University of CaliforniaDavisCaliforniaUSA
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11
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Chadsey LE, Cook MR, Green EE, Jennings RN, Moore PF, Vernau W, Kisseberth WC, Diaz SF. Treatment of indolent cutaneous T-cell lymphoma with hypofractionated radiation therapy in three cats. Vet Dermatol 2021; 32:515-e143. [PMID: 34240483 DOI: 10.1111/vde.13002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 05/09/2021] [Accepted: 05/17/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Feline indolent cutaneous T-cell lymphoma (ICL) is an uncommon neoplastic disease. There is currently no consensus on treatment recommendations for ICL. OBJECTIVE To report the clinical outcome of three cats with ICL treated with hypofractionated electron-beam radiotherapy (RT). ANIMALS Three privately owned cats with ICL. MATERIALS AND METHODS Medical records and client surveys were reviewed. A diagnosis of probable ICL was based on history, clinical presentation and histopathological findings, and confirmed using CD3 immunohistochemical analysis and PCR for antigen receptor gene rearrangement (PARR). All cats were treated with hypofractionated RT (four fractions of 8 Gy). RESULTS All cats presented with skin lesions characterised by erythema and alopecia that were refractory to previous treatment with systemic glucocorticoids. Before hypofractionated RT treatment, lesions were histologically described as having diffuse infiltration of the dermis with CD3+ T cells. Molecular clonality analysis revealed clonal T-cell receptor gamma gene rearrangement. After RT, two cats showed histological improvement defined by decreased infiltration of lymphocytes, with cellular infiltrate present only in the deeper dermis; one cat had near complete histological resolution of lesions with only minimal residual lymphocytes. One cat was determined to have a complete clinical response while the other showed partial responses. No acute adverse effects of radiation were observed; chronic effects included leukotrichia, partial alopecia and mild fibrosis. All clients reported improvement in quality of life for their cats. CONCLUSIONS AND CLINICAL IMPORTANCE Clinical and histological improvement in these cats suggests that hypofractionated RT can be a useful treatment modality for cats with ICL.
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Affiliation(s)
- Laura E Chadsey
- Department of, Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
| | - Matthew R Cook
- Department of, Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
| | - Eric E Green
- Department of, Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
| | - Ryan N Jennings
- Department of, Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
| | - Peter F Moore
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - William Vernau
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - William C Kisseberth
- Department of, Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
| | - Sandra F Diaz
- Department of, Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
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12
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Choi JW, Withers SS, Chang H, Spanier JA, De La Trinidad VL, Panesar H, Fife BT, Sciammas R, Sparger EE, Moore PF, Kent MS, Rebhun RB, McSorley SJ. Development of canine PD-1/PD-L1 specific monoclonal antibodies and amplification of canine T cell function. PLoS One 2020; 15:e0235518. [PMID: 32614928 PMCID: PMC7332054 DOI: 10.1371/journal.pone.0235518] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 06/16/2020] [Indexed: 12/14/2022] Open
Abstract
Interruption of the programmed death 1 (PD-1) / programmed death ligand 1 (PD-L1) pathway is an established and effective therapeutic strategy in human oncology and holds promise for veterinary oncology. We report the generation and characterization of monoclonal antibodies specific for canine PD-1 and PD-L1. Antibodies were initially assessed for their capacity to block the binding of recombinant canine PD-1 to recombinant canine PD-L1 and then ranked based on efficiency of binding as judged by flow cytometry. Selected antibodies were capable of detecting PD-1 and PD-L1 on canine tissues by flow cytometry and Western blot. Anti-PD-L1 worked for immunocytochemistry and anti-PD-1 worked for immunohistochemistry on formalin-fixed paraffin embedded canine tissues, suggesting the usage of this antibody with archived tissues. Additionally, anti-PD-L1 (JC071) revealed significantly increased PD-L1 expression on canine monocytes after stimulation with peptidoglycan or lipopolysaccharide. Together, these antibodies display specificity for the natural canine ligand using a variety of potential diagnostic applications. Importantly, multiple PD-L1-specific antibodies amplified IFN-γ production in a canine peripheral blood mononuclear cells (PBMC) concanavlin A (Con A) stimulation assay, demonstrating functional activity.
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Affiliation(s)
- Jin Wook Choi
- Center for Immunology and Infectious Diseases, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Sita S. Withers
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Hong Chang
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Justin A. Spanier
- Center for Immunology, Department of Medicine, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Victoria L. De La Trinidad
- Center for Immunology and Infectious Diseases, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Harmanpreet Panesar
- Center for Immunology and Infectious Diseases, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Brian T. Fife
- Center for Immunology, Department of Medicine, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Roger Sciammas
- Center for Immunology and Infectious Diseases, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Ellen E. Sparger
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Peter F. Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Michael S. Kent
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Robert B. Rebhun
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, United States of America
| | - Stephen J. McSorley
- Center for Immunology and Infectious Diseases, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California, United States of America
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13
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Fernandez M, Boudreaux BB, Wilson L, Moore PF, Rademacher N, Pucheu-Haston C. Invasive histiocytoma in the ear canal of a dog. Vet Dermatol 2020; 31:317-e80. [PMID: 32249514 DOI: 10.1111/vde.12848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Cutaneous histiocytomas (CH) are derived from epidermal Langerhans cells. Single CH are generally associated with a good prognosis in dogs because most undergo spontaneous remission. However, aggressive behaviour and lymph node metastasis have been reported in a small number of dogs with single CH. OBJECTIVE To describe the clinical presentation, treatment and disease progression of an aggressive CH located in the ear canal of a dog. ANIMAL An 8-year-old intact male Rottweiler dog. METHODS AND MATERIALS A unilateral ear canal mass was identified as a CH on routine haematoxylin and eosin stained samples. The diagnosis was confirmed by the demonstration of markers associated with Langerhans cells (Iba-1, E-cadherin and CD18) and the absence of markers associated with B cells (CD79a, CD20, Pax5), T cells (CD3), plasma cells (Mum-1) and macrophages (CD11d, CD204). RESULTS A total ear canal ablation was performed, but tumour cells extended throughout the horizontal canal and to the deep surgical margin. Due to the locally invasive nature of the mass and incomplete excision, adjunctive chemotherapy with CCNU was pursued. No measurable local disease was appreciable at the time of the last treatment. At 250 days post-surgery the dog was euthanized owing to the development of multiple abdominal masses. No evidence of local tumour recurrence was noted. CONCLUSIONS AND CLINICAL IMPORTANCE Although single CH are typically associated with benign behaviour, the mass in this dog demonstrated locally invasive behaviour. Cutaneous histiocytomas in the ear canals of dogs may represent a particularly aggressive variant of the condition.
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Affiliation(s)
- Monica Fernandez
- Departments of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - Bonnie B Boudreaux
- Departments of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - Leslie Wilson
- Departments of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Peter F Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, 1 Shields Drive, Davis, CA, 95616, USA
| | - Nathalie Rademacher
- Departments of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - Cherie Pucheu-Haston
- Departments of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, LA, USA
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14
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Radtanakatikanon A, Keller SM, Darzentas N, Moore PF, Folch G, Nguefack Ngoune V, Lefranc MP, Vernau W. Topology and expressed repertoire of the Felis catus T cell receptor loci. BMC Genomics 2020; 21:20. [PMID: 31906850 PMCID: PMC6945721 DOI: 10.1186/s12864-019-6431-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 12/24/2019] [Indexed: 01/26/2023] Open
Abstract
Background The domestic cat (Felis catus) is an important companion animal and is used as a large animal model for human disease. However, the comprehensive study of adaptive immunity in this species is hampered by the lack of data on lymphocyte antigen receptor genes and usage. The objectives of this study were to annotate the feline T cell receptor (TR) loci and to characterize the expressed repertoire in lymphoid organs of normal cats using high-throughput sequencing. Results The Felis catus TRG locus contains 30 genes: 12 TRGV, 12 TRGJ and 6 TRGC, the TRB locus contains 48 genes: 33 TRBV, 2 TRBD, 11 TRBJ, 2 TRBC, the TRD locus contains 19 genes: 11 TRDV, 2 TRDD, 5 TRDJ, 1 TRDC, and the TRA locus contains 127 genes: 62 TRAV, 64 TRAJ, 1 TRAC. Functional feline V genes form monophyletic clades with their orthologs, and clustering of multimember subgroups frequently occurs in V genes located at the 5′ end of TR loci. Recombination signal (RS) sequences of the heptamer and nonamer of functional V and J genes are highly conserved. Analysis of the TRG expressed repertoire showed preferential intra-cassette over inter-cassette rearrangements and dominant usage of the TRGV2–1 and TRGJ1–2 genes. The usage of TRBV genes showed minor bias but TRBJ genes of the second J-C-cluster were more commonly rearranged than TRBJ genes of the first cluster. The TRA/TRD V genes almost exclusively rearranged to J genes within their locus. The TRAV/TRAJ gene usage was relatively balanced while the TRD repertoire was dominated by TRDJ3. Conclusions This is the first description of all TR loci in the cat. The genomic organization of feline TR loci was similar to that of previously described jawed vertebrates (gnathostomata) and is compatible with the birth-and-death model of evolution. The large-scale characterization of feline TR genes provides comprehensive baseline data on immune repertoires in healthy cats and will facilitate the development of improved reagents for the diagnosis of lymphoproliferative diseases in cats. In addition, these data might benefit studies using cats as a large animal model for human disease.
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Affiliation(s)
- Araya Radtanakatikanon
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, USA.
| | - Stefan M Keller
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Nikos Darzentas
- Department of Internal Medicine II, University Hospital Schleswig-Holstein, Kiel, Germany.,Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Peter F Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Géraldine Folch
- IMGT® the international ImMunoGeneTics information system®, Laboratoire d'ImmunoGénétique Moléculaire LIGM, Institut de Génétique Humaine IGH, UMR 9002 CNRS, Université de Montpellier, Montpellier Cedex 5, France
| | - Viviane Nguefack Ngoune
- IMGT® the international ImMunoGeneTics information system®, Laboratoire d'ImmunoGénétique Moléculaire LIGM, Institut de Génétique Humaine IGH, UMR 9002 CNRS, Université de Montpellier, Montpellier Cedex 5, France
| | - Marie-Paule Lefranc
- IMGT® the international ImMunoGeneTics information system®, Laboratoire d'ImmunoGénétique Moléculaire LIGM, Institut de Génétique Humaine IGH, UMR 9002 CNRS, Université de Montpellier, Montpellier Cedex 5, France
| | - William Vernau
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, USA
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15
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Rabiger FV, Rothe K, von Buttlar H, Bismarck D, Büttner M, Moore PF, Eschke M, Alber G. Distinct Features of Canine Non-conventional CD4 -CD8α - Double-Negative TCRαβ + vs. TCRγδ + T Cells. Front Immunol 2019; 10:2748. [PMID: 31824515 PMCID: PMC6883510 DOI: 10.3389/fimmu.2019.02748] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 11/11/2019] [Indexed: 01/01/2023] Open
Abstract
The role of conventional TCRαβ+CD4+ or TCRαβ+CD8α+ single-positive (sp) T lymphocytes in adaptive immunity is well-recognized. However, non-conventional T cells expressing TCRαβ or TCRγδ but lacking CD4 and CD8α expression [i.e., CD4−CD8α− double-negative (dn) T cells] are thought to play a role at the interface between the innate and adaptive immune system. Dn T cells are frequent in swine, cattle or sheep and predominantly express TCRγδ. In contrast, TCRγδ+ T cells are rare in dogs. In this study, we identified a high proportion of canine dn T cells in the TCRαβ+ T cell population of PBMC, lymphatic and non-lymphatic organs. In PBMC, the frequency of this T cell subpopulation made up one third of the frequency of TCRαβ+CD4+ sp, and almost half of the frequency of TCRαβ+CD8α+ sp T cells (i.e., ~15% of all TCRαβ+ T cells). Among TCRαβ+CD4−CD8α− dn T cells of PBMC and tissues, FoxP3+ cells were identified indicating regulatory potential of this T cell subset. 80% of peripheral blood FoxP3+TCRαβ+CD4−CD8α− dn T cells co-expressed CD25, and, interestingly, also the FoxP3-negative TCRαβ+CD4−CD8α− dn T cells comprised ~34% CD25+ cells. Some of the FoxP3-positive TCRαβ+CD4−CD8α− dn T cells co-expressed GATA-3 suggesting stable function of regulatory T cells. The frequency of GATA-3 expression by FoxP3−TCRαβ+CD4−CD8α− dn T cells was even higher as compared with TCRαβ+CD4+ sp T cells (20.6% vs. 11.9%). Albeit lacking FoxP3 and CD25 expression, TCRγδ+CD4−CD8α− dn T cells also expressed substantial proportions of GATA-3. In addition, TCRαβ+CD4−CD8α− dn T cells produced IFN-γ and IL-17A upon stimulation. T-bet and granzyme B were only weakly expressed by both dn T cell subsets. In conclusion, this study identifies two dn T cell subsets in the dog: (i) a large (~7.5% in Peyer's patches, ~15% in lung) population of TCRαβ+CD4−CD8α− dn T cells with subpopulations thereof showing an activated phenotype, high expression of FoxP3 or GATA-3 as well as production of IFN-γ or IL-17A and (ii) a small TCRγδ+CD4−CD8α− dn T cell subset also expressing GATA-3 without production of IFN-γ or IL-17A. It will be exciting to unravel the function of each subset during immune homeostasis and diseases of dogs.
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Affiliation(s)
- Friederike V Rabiger
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Kathrin Rothe
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Heiner von Buttlar
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Doris Bismarck
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Mathias Büttner
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Peter F Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Maria Eschke
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Gottfried Alber
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
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16
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Orellana-Guerrero D, Renaudin C, Edwards L, Rose E, Aleman M, Moore PF, Dujovne G. Fungal Placentitis Caused by Aspergillus terreus in a Mare: Case Report. J Equine Vet Sci 2019; 83:102799. [PMID: 31791522 DOI: 10.1016/j.jevs.2019.102799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 08/28/2019] [Accepted: 09/17/2019] [Indexed: 11/18/2022]
Abstract
Placentitis has been reported as the most important cause of equine abortions, stillbirths, and perinatal deaths in horses. Most cases are caused by bacteria and less commonly by fungal elements. The aim of this report is to describe the clinical presentation of a fungal placentitis caused by Aspergillus terrerus. A 5-year-old thoroughbred maiden mare at the 217th day of gestation presented with some classic signs of placentitis (premature udder development and milk dripping). All ultrasonographic findings were consistent with a live fetus and a severe placentitis. On vaginal examination, purulent discharge was found coming from the external cervical os. Samples sent for culture yielded very small numbers of mixed growth including Enterococcus faecalis (by matrix-assisted laser desorption/ionization time-of-flight mass spectrometer), Streptococcus viridans, and Aspergillus terreus, and polymerase chain reaction was positive for Aspergillus terreus and Pseudomonas. The mare was placed on broad-spectrum antimicrobials, nonsteroidal anti-inflammatories, and hormonal and antifungal treatment. The fetus kept on developing and growing despite the placentitis for 14 days until the demise of the fetus in utero occurred. Aspergillus terreus was isolated from the chorionic surface but not from the fetus. Fungal placentitis is not very commonly found in mares. The extent of the placental lesions and the severity of the placentitis contributed to the death of the fetus. This is one of the few case reports available describing fungal placentitis. Aspergillus terreus has not been previously reported as a cause of placentitis.
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Affiliation(s)
- Daniela Orellana-Guerrero
- William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis CA
| | - Catherine Renaudin
- William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis CA
| | - Lisa Edwards
- William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis CA
| | - Elizabeth Rose
- William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis CA
| | - Monica Aleman
- Department of Medicine and Epidemiology School of Veterinary Medicine, University of California, Davis, CA
| | - Peter F Moore
- Department of Pathology, Microbiology, and Immunology School of Veterinary Medicine, University of California, Davis, CA
| | - Ghislaine Dujovne
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA.
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17
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Rabiger FV, Bismarck D, Protschka M, Köhler G, Moore PF, Büttner M, von Buttlar H, Alber G, Eschke M. Canine tissue-associated CD4+CD8α+ double-positive T cells are an activated T cell subpopulation with heterogeneous functional potential. PLoS One 2019; 14:e0213597. [PMID: 30865691 PMCID: PMC6415905 DOI: 10.1371/journal.pone.0213597] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 02/25/2019] [Indexed: 12/28/2022] Open
Abstract
Canine CD4+CD8α+ double-positive (dp) T cells of peripheral blood are a unique effector memory T cell subpopulation characterized by an increased expression of activation markers in comparison with conventional CD4+ or CD8α+ single-positive (sp) T cells. In this study, we investigated CD4+CD8α+ dp T cells in secondary lymphatic organs (i.e. mesenteric and tracheobronchial lymph nodes, spleen, Peyer’s patches) and non-lymphatic tissues (i.e. lung and epithelium of the small intestine) within a homogeneous group of healthy Beagle dogs by multi-color flow cytometry. The aim of this systematic analysis was to identify the tissue-specific localization and characteristics of this distinct T cell subpopulation. Our results revealed a mature extrathymic CD1a-CD4+CD8α+ dp T cell population in all analyzed organs, with highest frequencies within Peyer’s patches. Constitutive expression of the activation marker CD25 is a feature of many CD4+CD8α+ dp T cells independent of their localization and points to an effector phenotype. A proportion of lymph node CD4+CD8α+ dp T cells is FoxP3+ indicating regulatory potential. Within the intestinal environment, the cytotoxic marker granzyme B is expressed by CD4+CD8α+ dp intraepithelial lymphocytes. In addition, a fraction of CD4+CD8α+ dp intraepithelial lymphocytes and of mesenteric lymph node CD4+CD8α+ dp T cells is TCRγδ+. However, the main T cell receptor of all tissue-associated CD4+CD8α+ dp T cells could be identified as TCRαβ. Interestingly, the majority of the CD4+CD8α+ dp T cell subpopulation expresses the unconventional CD8αα homodimer, in contrast to CD8α+ sp T cells, and CD4+CD8α+ dp thymocytes which are mainly CD8αβ+. The presented data provide the basis for a functional analysis of tissue-specific CD4+CD8α+ dp T cells to elucidate their role in health and disease of dogs.
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Affiliation(s)
- Friederike V. Rabiger
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Doris Bismarck
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Martina Protschka
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | | | - Peter F. Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, Davis, United States
| | - Mathias Büttner
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Heiner von Buttlar
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Gottfried Alber
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
- * E-mail:
| | - Maria Eschke
- Institute of Immunology/Molecular Pathogenesis, Center for Biotechnology and Biomedicine, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
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18
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Hwang MH, Darzentas N, Bienzle D, Moore PF, Guscetti F, Morrison J, Keller SM. A review of canine B cell clonality assays and primer set optimization using large-scale repertoire data. Vet Immunol Immunopathol 2019; 209:45-52. [PMID: 30885305 DOI: 10.1016/j.vetimm.2019.01.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 11/03/2018] [Accepted: 01/17/2019] [Indexed: 12/01/2022]
Abstract
Several molecular clonality assays have been developed to assess canine B cell proliferations. These assays were based on different sequence data, utilized different assay designs and employed different testing strategies. This has resulted in a complex body of literature and complicates evidence-based selection of primer sets. In addition, further refinement of primer sets is difficult because it is unknown how well current primer sets cover the expressed sequence repertoire. The objectives of this study were 1) to provide an overview of published IGH clonality assays that highlights key differences in assay design and testing strategy and 2) to propose a novel method for optimizing primer sets that leverages large-scale sequencing data. A review of previously published assays highlighted confounding factors that hamper a direct comparison of performance metrics between studies. These findings illustrate the need for a multi-institutional effort to harmonize veterinary clonality testing. A novel in silico analysis of primer sequences using a large dataset of expressed sequences identified shortfalls of existing primer sets and was used to guide primer optimization. Three optimized primer sets were tested and yielded qualitative sensitivity values between 80-90%. The qualitative sensitivity ranged from 1% to over 50% and was dependent on the size of the neoplastic clone and the sample DNA used. These findings illustrate that inclusion of high-throughput sequencing data for primer design can be a useful tool to guide primer design and optimization. This strategy could be applied to other antigen receptor loci or species to further improve veterinary clonality assays.
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Affiliation(s)
- Mei-Hua Hwang
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Nikos Darzentas
- Department of Internal Medicine II, University Hospital Schleswig-Holstein, Kiel, Germany; Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Dorothee Bienzle
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Peter F Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, California, USA
| | - Franco Guscetti
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Jodi Morrison
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Stefan M Keller
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.
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19
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Abstract
A 5‐year‐old, spayed female French Bulldog presented with multiple papules on the skin of the scapular area. Histopathological examination of punch biopsy samples revealed dense infiltration of small lymphoid cells in the superficial dermis and in areas surrounding hair follicles. Immunohistochemical analysis indicated that these cells were positive for CD3, CD4, and TCRαβ, but negative for CD1c, CD8α, CD8β, CD11c, CD20, CD45RA, CD90, MHC‐II, and TCRγδ. In addition, CD45 was highly expressed, and the proliferation fraction was very low. Molecular clonality of T‐cell receptor G chains yielded a clonal result. The skin lesions were surgically excised because they had progressed to the lateral front leg. Postoperative clinical course was favorable, and recurrence was not observed until the dog died in a traffic accident, approximately 1 year later.
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Affiliation(s)
| | | | | | - Peter F Moore
- Department of Pathology Microbiology and Immunology, University of California, Davis, California, USA
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20
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Withers SS, Moore PF, Chang H, Choi JW, McSorley SJ, Kent MS, Monjazeb AM, Canter RJ, Murphy WJ, Sparger EE, Rebhun RB. Multi-color flow cytometry for evaluating age-related changes in memory lymphocyte subsets in dogs. Dev Comp Immunol 2018; 87:64-74. [PMID: 29859828 PMCID: PMC6197816 DOI: 10.1016/j.dci.2018.05.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/29/2018] [Accepted: 05/30/2018] [Indexed: 06/08/2023]
Abstract
While dogs are increasingly being utilized as large-animal models of disease, important features of age-related immunosenescence in the dog have yet to be evaluated due to the lack of defined naïve vs. memory T lymphocyte phenotypes. We therefore performed multi-color flow cytometry on peripheral blood mononuclear cells from young and aged beagles, and determined the differential cytokine production by proposed memory subsets. CD4+ and CD8+ T lymphocytes in aged dogs displayed increased cytokine production, and decreased proliferative capacity. Antibodies targeting CD45RA and CD62L, but less so CD28 or CD44, defined canine cells that consistently exhibited properties of naïve-, central memory-, effector memory-, and terminal effector-like CD4+ and CD8+ T lymphocyte subsets. Older dogs demonstrated decreased frequencies of naïve-like CD4+ and CD8+ T lymphocytes, and an increased frequency of terminal effector-like CD8+ T lymphocytes. Overall findings revealed that aged dogs displayed features of immunosenescence similar to those reported in other species.
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Affiliation(s)
- Sita S Withers
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Peter F Moore
- Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Hong Chang
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Jin W Choi
- Center for Comparative Medicine, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California-Davis, County Road 98 & Hutchison Drive, Davis, CA 95616, USA
| | - Stephen J McSorley
- Center for Comparative Medicine, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California-Davis, County Road 98 & Hutchison Drive, Davis, CA 95616, USA
| | - Michael S Kent
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Arta M Monjazeb
- Comprehensive Cancer Center, Department of Radiation Oncology, School of Medicine, University of California-Davis, 4501 X Street, G-140, Sacramento, CA 95817, USA
| | - Robert J Canter
- Comprehensive Cancer Center, Department of Surgery, School of Medicine, University of California-Davis, 4501 X Street, G-140, Sacramento, CA 95817, USA
| | - William J Murphy
- Department of Dermatology, School of Medicine, University of California-Davis, 2921 Stockton Blvd, Sacramento, CA 95716, USA
| | - Ellen E Sparger
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA.
| | - Robert B Rebhun
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA.
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21
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Hwang MH, Darzentas N, Bienzle D, Moore PF, Morrison J, Keller SM. Characterization of the canine immunoglobulin heavy chain repertoire by next generation sequencing. Vet Immunol Immunopathol 2018; 202:181-190. [DOI: 10.1016/j.vetimm.2018.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 06/16/2018] [Accepted: 07/04/2018] [Indexed: 10/28/2022]
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22
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Couto KM, Moore PF, Zwingenberger AL, Willcox JL, Skorupski KA. Clinical characteristics and outcome in dogs with small cell T-cell intestinal lymphoma. Vet Comp Oncol 2018; 16:337-343. [PMID: 29322604 DOI: 10.1111/vco.12384] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/14/2017] [Accepted: 12/15/2017] [Indexed: 12/31/2022]
Abstract
Small cell intestinal lymphoma has not been well characterized in dogs. The objective of this study was to describe clinical characteristics and outcome in dogs with small cell intestinal lymphoma. We hypothesized that affected dogs would have prolonged survival compared with high-grade gastrointestinal (GI) lymphoma. Pathology records were searched for dogs with histologically confirmed small cell GI lymphoma. Seventeen dogs with confirmed small cell intestinal lymphoma were identified, and clinical and outcome data were retrospectively collected. Histopathology was reviewed by a board-certified pathologist, and tissue sections were subjected to immunophenotyping and molecular clonality assessment. All dogs had small cell, T-cell, lymphoma confirmed within various regions of small intestine, with 1 dog also having disease in abdominal lymph nodes. All dogs had clinical signs attributable to GI disease; diarrhoea (n = 13) was most common. Ultrasonographic abnormalities were present in 8 of 13 dogs with abnormal wall layering (n = 7) and hyperechoic mucosal striations (n = 7) representing the most common findings. In total, 14 dogs received some form of treatment. The median survival time (MST) for all dogs was 279 days and the MST for the 14 dogs that received any treatment was 628 days. Dogs with anaemia and weight loss at presentation had significantly shorter survival times and dogs that received a combination of steroids and an alkylating agent had significantly longer survival times. Small cell, T-cell, intestinal lymphoma is a distinct disease process in dogs, and those undergoing treatment may experience prolonged survival.
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Affiliation(s)
- K M Couto
- Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, California.,Vista Veterinary Specialists by Ethos Veterinary Health, Sacramento, California
| | - P F Moore
- Department of Pathology, Microbiology, & Immunology, School of Veterinary Medicine, University of California, Davis, California
| | - A L Zwingenberger
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - J L Willcox
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - K A Skorupski
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
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23
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Sykes SE, Byfield V, Sullivan L, Bender SJ, Moore PF, Sánchez MD. Feline Respiratory Extramedullary Plasmacytoma with Lymph Node Metastasis and Intrahistiocytic Amyloid. J Comp Pathol 2016; 156:173-177. [PMID: 28017340 PMCID: PMC7094673 DOI: 10.1016/j.jcpa.2016.11.270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/08/2016] [Accepted: 11/19/2016] [Indexed: 11/29/2022]
Abstract
A 14-year-old domestic longhaired cat presented with a 2-year history of nasal discharge and a recent onset of inappetence and submandibular lymphadenopathy. The cat was humanely destroyed after developing severe respiratory distress. Necropsy examination revealed thickened nasal turbinates and soft palate, and friable red–tan material within the frontal sinus, nasal cavity and nasopharynx. The lungs contained multifocal irregular friable tan nodules. Multiple lymph nodes were enlarged, friable and red–tan in colour. Histopathology revealed a mature type extramedullary plasmacytoma (EMP) within the frontal sinus, nasal cavity, soft palate, larynx, trachea, lungs and multiple lymph nodes. The lymph nodes and larynx also contained marked granulomatous inflammation with extensive intrahistiocytic (and lesser amounts of extracellular) lambda light chain amyloid, confirmed by electron microscopy and immunohistochemistry. Neoplastic cells expressed CD79a and MUM1. This is the first report of an infiltrative EMP of the feline respiratory tract with lymph node metastasis and predominantly intrahistiocytic amyloid.
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Affiliation(s)
- S E Sykes
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, 3800 Spruce St, Philadelphia, Pennsylvania, USA.
| | - V Byfield
- Red Bank Veterinary Hospital, 210 Route 206 S., Hillsborough, New Jersey, USA
| | - L Sullivan
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, 3800 Spruce St, Philadelphia, Pennsylvania, USA
| | - S J Bender
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, 3800 Spruce St, Philadelphia, Pennsylvania, USA
| | - P F Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California (Davis), Davis, California, USA
| | - M D Sánchez
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, 3800 Spruce St, Philadelphia, Pennsylvania, USA
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24
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Meichner K, Kraszeski BH, Durrant JR, Grindem CB, Breuhaus BA, Moore PF, Neel JA, Linder KE, Borst LB, Fogle JE, Tarigo JL. Extreme lymphocytosis with myelomonocytic morphology in a horse with diffuse large B‐cell lymphoma. Vet Clin Pathol 2016; 46:64-71. [DOI: 10.1111/vcp.12435] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kristina Meichner
- Department of Pathology University of Georgia College of Veterinary Medicine Athens GA USA
| | - Blaire H. Kraszeski
- Department of Clinical Sciences College of Veterinary Medicine North Carolina State University Raleigh NC USA
| | - Jessica R. Durrant
- Department of Population Health and Pathobiology College of Veterinary Medicine North Carolina State University Raleigh NC USA
| | - Carol B. Grindem
- Department of Population Health and Pathobiology College of Veterinary Medicine North Carolina State University Raleigh NC USA
| | - Babetta A. Breuhaus
- Department of Clinical Sciences College of Veterinary Medicine North Carolina State University Raleigh NC USA
| | - Peter F. Moore
- Department of Pathology, Microbiology, and Immunology University of California Davis CA USA
| | - Jennifer A. Neel
- Department of Population Health and Pathobiology College of Veterinary Medicine North Carolina State University Raleigh NC USA
| | - Keith E. Linder
- Department of Population Health and Pathobiology College of Veterinary Medicine North Carolina State University Raleigh NC USA
| | - Luke B. Borst
- Department of Population Health and Pathobiology College of Veterinary Medicine North Carolina State University Raleigh NC USA
| | - Jonathan E. Fogle
- Department of Population Health and Pathobiology College of Veterinary Medicine North Carolina State University Raleigh NC USA
| | - Jaime L. Tarigo
- Department of Pathology University of Georgia College of Veterinary Medicine Athens GA USA
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25
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Schjaerff M, Keller SM, Affolter VK, Kristensen AT, Moore PF. Cellular endocytic compartment localization of expressed canine CD1 molecules. Vet Immunol Immunopathol 2016; 182:11-21. [PMID: 27863541 DOI: 10.1016/j.vetimm.2016.08.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 08/03/2016] [Accepted: 08/31/2016] [Indexed: 11/27/2022]
Abstract
CD1 molecules are glycoproteins present primarily on dendritic cells (DCs), which recognize and present a variety of foreign- and self-lipid antigens to T-cells. Humans have five different CD1 isoforms that survey distinct cellular compartments allowing for recognition of a large repertoire of lipids. The canine CD1 family consists of seven functional CD1 molecules (canine CD1a2, CD1a6, CD1a8, CD1a9, CD1b, CD1c and CD1e) and one presumed non-functional isoform (canine CD1d) due to a disrupted gene structure. The aim of this study was to describe in vitro steady-state localization ptterns of canine CD1 isoforms and their correlation with endocytic organelles. GFP-fused canine CD1 293T cell transfectants were stained with markers for early endocytic compartments (EEA-1) and late endocytic/lysosomal compartments (LAMP-1), respectively, and analyzed by confocal microscopy. Canine CD1a molecules localized to the plasma membrane and partially to the early endocytic compartment, but not to late endosomes or lysosomes. In contrast, canine CD1b was highly associated with late endosomal/lysosomal compartments and showed a predominant intracellular expression pattern. Canine CD1c protein expression localized more promiscuously to both the early endosomal compartments and the late endosomal/lysosomal compartments. The canine CD1e molecule showed a strictly intracellular expression with a partial overlap with late endosomal/lysosomal compartments. Lastly, canine CD1d was expressed abnormally showing only a diminished GFP expression. In conclusion, canine CD1 transfectants show distinct localization patterns that are similar to human CD1 proteins with the exception of the canine CD1d isoform, which most likely is non-functional. These findings imply that canine CD1 localization overall resembles human CD1 trafficking patterns. This knowledge is important for the understanding of lipid antigen-receptor immunity in the dog.
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Affiliation(s)
- Mette Schjaerff
- Department of Veterinary Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, One Shields Avenue, Davis, 95616 CA, USA; Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, 1870 Frederiksberg, Denmark
| | - Stefan M Keller
- Department of Veterinary Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, One Shields Avenue, Davis, 95616 CA, USA
| | - Verena K Affolter
- Department of Veterinary Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, One Shields Avenue, Davis, 95616 CA, USA
| | - Annemarie T Kristensen
- Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, 1870 Frederiksberg, Denmark
| | - Peter F Moore
- Department of Veterinary Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, One Shields Avenue, Davis, 95616 CA, USA.
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26
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Werner JA, Woo JC, Vernau W, Graham PS, Grahn RA, Lyons LA, Moore PF. Characterization of Feline Immunoglobulin Heavy Chain Variable Region Genes for the Molecular Diagnosis of B-cell Neoplasia. Vet Pathol 2016; 42:596-607. [PMID: 16145206 DOI: 10.1354/vp.42-5-596] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
To develop a molecular-based assay so that the diagnosis of feline B-cell neoplasia can be facilitated, we have characterized 24 feline immunoglobulin heavy chain variable region ( IGH V) complementary DNA (cDNA) transcripts. Structural homology with rearranged human IGH V genes was found, and the sequence information was used to design a feline-specific polymerase chain reaction (PCR)-based assay to amplify the complementarity determining region 3 as a marker for B-cell clonality. Conserved primers derived from the second and third framework regions of V gene segments were used in conjunction with 2 sequence-specific primers and 1 degenerate primer derived from the J gene segments. Each PCR reaction was run in duplicate, and both native and denatured PCR products were evaluated using polyacrylamide gel electrophoresis. Formalin-fixed, paraffin-embedded (FFPE) tissue sections from cats with confirmed B-cell neoplasia (diffuse large B-cell lymphoma, plasmacytoma, and myeloma) were examined, and 15/22 (68.2%) cats produced results indicative of the presence of a monoclonal population of B cells. The evaluation of denatured PCR products (heteroduplex analysis) facilitated a more accurate interpretation in 3/15 (20%) cats. Pseudoclonality was a major reason for the failure to detect monoclonality. Poor DNA quality is a significant concern and was responsible for the removal of 2 cats from the study. Using this assay, FFPE normal feline lymphoid tissues and unfixed peripheral blood mononuclear cells were determined to be composed of polyclonal populations of B cells. This assay represents a useful adjunctive diagnostic tool for the diagnosis and investigation of feline B-cell lymphoproliferative disorders.
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Affiliation(s)
- J A Werner
- Department of Veterinary, Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
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27
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Abstract
Sixty-six cases of indolent canine lymphoid proliferation were reviewed. Age ranged from 1.5 to 16 years (median 9.0 years). Dogs of 26 breeds, plus 13 of mixed breeding or unknown lineage, were represented. B-Cell lymphomas (CD79a+) predominated. Marginal zone lymphoma (MZL), the largest group, involved lymph node (33 cases) and spleen (13 cases), with both tissues involved in five of these cases. Follicular lymphoma (FL) involved lymph nodes (five cases), and mantle cell lymphoma (MCL) occurred as solitary splenic masses (three cases). Nodal CD3+ T-zone lymphomas (TZL) (10 cases), were included since they resembled late-stage MZL at the architectural level. Two cases of marginal zone hyperplasia (MZH) were included to aid in differentiation of early MZL. Clonality status was determined in 54 cases by analysis of immunoglobulin heavy chain (IGH) and T-cell antigen receptor gamma (TCRG) gene rearrangement. Clonal rearrangement of IGH was detected in 28 of 35 MZL cases (80%), four of four FL cases (100%) and three of three MCL cases (100%). Concurrent cross lineage rearrangement of TCRG was detected in six MZL and two FL cases. Clonal rearrangement of TCRG was documented in five of eight TZL cases (63%). Limited survival data obtained for 18 dogs indicated that the B-cell lymphomas (MZL, MCL, and FL) and the T-cell lymphoma (TZL) were associated with indolent behavior and long survival. Although to the authors' knowledge, the true incidence of canine indolent lymphomas is unknown, the tumors are not rare and may have been underrecognized. Recognition of their architectural features, routine application of immunophenotyping, and molecular clonality assessment should alleviate this.
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Affiliation(s)
- V E Valli
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois, Room 284 SAC, 1008 W Hazelwood Dr., Urbana, IL, 61802, USA.
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28
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Abstract
Histiocytic proliferative diseases include reactive and neoplastic proliferations of dendritic cells (DC) or macrophages. Various forms of DC proliferations have been documented in humans and dogs; their etiology is largely unknown. With the exception of a few case reports, histiocytic proliferations have not been characterized in cats. This study summarizes clinical, morphologic, and immunophenotypic features of a feline progressive histiocytosis (FPH) in 30 cats. There was no breed or age predilection. Females were more often affected than males. Solitary or multiple nonpruritic firm papules, nodules, and plaques had a predilection for feet, legs, and face. Lesions consisted of poorly circumscribed epitheliotropic (13/30) and nonepitheliotropic (17/30) histiocytic infiltrates of the superficial and deep dermis, with variable extension into the subcutis. The histiocytic population was relatively monomorphous early in the clinical course. With disease progression, cellular pleomorphism was more frequently encountered. Histiocytes expressed CD1a, CD1c, CD18, and major histocompatibility complex class II molecules. This immunophenotype suggests a DC origin of these lesions. Coexpression of E-cadherin, a feature of cutaneous Langerhans cells, was only observed in 3 cats. FPH followed a progressive clinical course; the lesions, however, were limited to the skin for an extended period of time. Terminal involvement of internal organs was documented in 7 cases. Treatment with chemotherapeutics or immunosuppressive and immunomodulatory drugs was not successful. The etiology of FPH remains unknown. FPH is best considered an initially indolent cutaneous neoplasm, which is mostly slowly progressive and may spread beyond the skin in the terminal stage.
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Affiliation(s)
- V K Affolter
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California at Davis, Davis, CA 95616, USA.
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29
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Sinclair KM, Eckstrand C, Moore PF, Hawkins MG. Epitheliotropic Gastrointestinal T-Cell Lymphoma With Concurrent Insulinoma and Adrenocortical Carcinoma in a Domestic Ferret (Mustela putorius furo). J Exot Pet Med 2016. [DOI: 10.1053/j.jepm.2015.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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30
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Schjaerff M, Keller SM, Fass J, Froenicke L, Grahn RA, Lyons L, Affolter VK, Kristensen AT, Moore PF. Refinement of the canine CD1 locus topology and investigation of antibody binding to recombinant canine CD1 isoforms. Immunogenetics 2015; 68:191-204. [DOI: 10.1007/s00251-015-0889-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 12/04/2015] [Indexed: 11/29/2022]
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31
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Hirako A, Sugiyama A, Sakurai M, Ozaki K, Sakai H, Takeuchi T, Morita T, Moore PF. Cutaneous histiocytic sarcoma with E-cadherin expression in a Pembroke Welsh Corgi dog. J Vet Diagn Invest 2015; 27:589-95. [DOI: 10.1177/1040638715604185] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
An 11-year-old male neutered Pembroke Welsh Corgi dog displayed a mass measuring 7.5 cm × 6.6 cm × 1.6 cm in the skin. Neoplastic tissue was nonencapsulated, and the neoplastic cells showed infiltrative growth into the surrounding tissue on microscopic examination. The neoplastic tissue was mainly located from the dermis to the subcutis. Epidermotropism of neoplastic cells was not observed. The tissue was composed of irregular, solid nests of round to polygonal cells. Nests were separated by fine fibrovascular stroma. Mitotic index was high (7.90 ± 0.38 per high power field) and extensive necrosis was observed in the neoplastic tissue. Vascular invasion was often observed in the neoplastic tissue. Neoplastic cells were positive for vimentin, HLA-DR antigen, Iba1, CD18, and E-cadherin, but cells did not express cytokeratin, S100, CD20, CD79α, CD3, MUM-1, lambda light chain, kappa light chain, lysozyme, CD204, or CD11d by immunohistochemistry. Electron microscopic analysis revealed dendrites on these cells. From the above-mentioned findings, the tumor was diagnosed as a cutaneous histiocytic sarcoma with E-cadherin expression. It is possible that neoplastic cells in the present case were derived from cutaneous Langerhans cell. To our knowledge, cutaneous histiocytic sarcoma with E-cadherin expression in domestic animals has not been previously diagnosed in domestic animals.
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Affiliation(s)
- Ayano Hirako
- Department of Veterinary Laboratory Medicine (Hirako, Sugiyama, Takeuchi), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Veterinary Pathology (Sakurai, Morita), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Pathology, Faculty of Pharmaceutical Science, Setsunan University, Osaka, Japan (Ozaki)
- Department of Veterinary Pathology, School of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan (Sakai)
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California–Davis, Davis, CA (Moore)
| | - Akihiko Sugiyama
- Department of Veterinary Laboratory Medicine (Hirako, Sugiyama, Takeuchi), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Veterinary Pathology (Sakurai, Morita), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Pathology, Faculty of Pharmaceutical Science, Setsunan University, Osaka, Japan (Ozaki)
- Department of Veterinary Pathology, School of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan (Sakai)
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California–Davis, Davis, CA (Moore)
| | - Masashi Sakurai
- Department of Veterinary Laboratory Medicine (Hirako, Sugiyama, Takeuchi), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Veterinary Pathology (Sakurai, Morita), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Pathology, Faculty of Pharmaceutical Science, Setsunan University, Osaka, Japan (Ozaki)
- Department of Veterinary Pathology, School of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan (Sakai)
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California–Davis, Davis, CA (Moore)
| | - Kiyokazu Ozaki
- Department of Veterinary Laboratory Medicine (Hirako, Sugiyama, Takeuchi), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Veterinary Pathology (Sakurai, Morita), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Pathology, Faculty of Pharmaceutical Science, Setsunan University, Osaka, Japan (Ozaki)
- Department of Veterinary Pathology, School of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan (Sakai)
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California–Davis, Davis, CA (Moore)
| | - Hiroki Sakai
- Department of Veterinary Laboratory Medicine (Hirako, Sugiyama, Takeuchi), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Veterinary Pathology (Sakurai, Morita), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Pathology, Faculty of Pharmaceutical Science, Setsunan University, Osaka, Japan (Ozaki)
- Department of Veterinary Pathology, School of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan (Sakai)
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California–Davis, Davis, CA (Moore)
| | - Takashi Takeuchi
- Department of Veterinary Laboratory Medicine (Hirako, Sugiyama, Takeuchi), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Veterinary Pathology (Sakurai, Morita), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Pathology, Faculty of Pharmaceutical Science, Setsunan University, Osaka, Japan (Ozaki)
- Department of Veterinary Pathology, School of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan (Sakai)
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California–Davis, Davis, CA (Moore)
| | - Takehito Morita
- Department of Veterinary Laboratory Medicine (Hirako, Sugiyama, Takeuchi), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Veterinary Pathology (Sakurai, Morita), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Pathology, Faculty of Pharmaceutical Science, Setsunan University, Osaka, Japan (Ozaki)
- Department of Veterinary Pathology, School of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan (Sakai)
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California–Davis, Davis, CA (Moore)
| | - Peter F. Moore
- Department of Veterinary Laboratory Medicine (Hirako, Sugiyama, Takeuchi), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Veterinary Pathology (Sakurai, Morita), School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Pathology, Faculty of Pharmaceutical Science, Setsunan University, Osaka, Japan (Ozaki)
- Department of Veterinary Pathology, School of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan (Sakai)
- Department of Pathology, Microbiology, Immunology, School of Veterinary Medicine, University of California–Davis, Davis, CA (Moore)
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Abstract
Histiocytic proliferative disorders are commonly observed in dogs and less often cats. Histiocytic disorders occur in most of the dendritic cell (DC) lineages. Canine cutaneous histiocytoma originates from Langerhans cells (LCs) indicated by expression of CD1a, CD11c/CD18, and E-cadherin. When histiocytomas occur as multiple lesions in skin with optional metastasis to lymph nodes and internal organs, the disease resembles cutaneous Langerhans cell histiocytosis of humans. Langerhans cell disorders do not occur in feline skin. Feline pulmonary LCH has been recognized as a cause of respiratory failure due to diffuse pulmonary infiltration by histiocytes, which express CD18 and E-cadherin and contain Birbeck's granules. In dogs and cats, histiocytic sarcomas (HS) arise from interstitial DCs that occur in most tissues of the body. Histiocytic sarcomas begin as localized lesions, which rapidly disseminate to many organs. Primary sites include spleen, lung, skin, brain (meninges), lymph node, bone marrow, and synovial tissues of limbs. An indolent form of localized HS, progressive histiocytosis, originates in the skin of cats. Hemophagocytic HS originates in splenic red pulp and bone marrow macrophages in dogs and cats. In dogs, histiocytes in hemophagocytic HS express CD11d/CD18, which is a leuko-integrin highly expressed by macrophages in splenic red pulp and bone marrow. Canine reactive histiocytic diseases, systemic histiocytosis (SH) and cutaneous histiocytosis, are complex inflammatory diseases with underlying immune dysregulation. The lesions are dominated by activated interstitial DCs and lymphocytes, which invade vessel walls and extend as vasocentric infiltrates in skin, lymph nodes, and internal organs (SH).
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Affiliation(s)
- P F Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, 4206 VM3A, 1 Shields Ave, University of California, Davis, CA 95616, USA.
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Luff JA, Yuan H, Kennedy D, Schlegel R, Felsburg P, Moore PF. Keratinocyte antiviral response to Poly(dA:dT) stimulation and papillomavirus infection in a canine model of X-linked severe combined immunodeficiency. PLoS One 2014; 9:e102033. [PMID: 25025687 PMCID: PMC4099134 DOI: 10.1371/journal.pone.0102033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 06/13/2014] [Indexed: 11/24/2022] Open
Abstract
X-linked severe combined immunodeficiency (XSCID) is caused by a genetic mutation within the common gamma chain (γc), an essential component of the cytokine receptors for interleukin (IL)-2, IL-4, IL-7, IL-9, IL-15, and IL-21. XSCID patients are most commonly treated with bone marrow transplants (BMT) to restore systemic immune function. However, BMT-XSCID humans and dogs remain at an increased risk for development of cutaneous papillomavirus (PV) infections and their associated neoplasms, most typically cutaneous papillomas. Since basal keratinocytes are the target cell for the initial PV infection, we wanted to determine if canine XSCID keratinocytes have a diminished antiviral cytokine response to poly(dA:dT) and canine papillomavirus-2 (CPV-2) upon initial infection. We performed quantitative RT-PCR for antiviral cytokines and downstream interferon stimulated genes (ISG) on poly(dA:dT) stimulated and CPV-2 infected monolayer keratinocyte cultures derived from XSCID and normal control dogs. We found that XSCID keratinocytes responded similarly to poly(dA:dT) as normal keratinocytes by upregulating antiviral cytokines and ISGs. CPV-2 infection of both XSCID and normal keratinocytes did not result in upregulation of antiviral cytokines or ISGs at 2, 4, or 6 days post infection. These data suggest that the antiviral response to initial PV infection of basal keratinocytes is similar between XSCID and normal patients, and is not the likely source for the remaining immunodeficiency in XSCID patients.
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Affiliation(s)
- Jennifer A Luff
- Department of Veterinary Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America
| | - Hang Yuan
- Department of Pathology, Georgetown University Medical School, Washington, D.C., United States of America
| | - Douglas Kennedy
- Department of Immunology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Richard Schlegel
- Department of Pathology, Georgetown University Medical School, Washington, D.C., United States of America
| | - Peter Felsburg
- Department of Immunology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Peter F Moore
- Department of Veterinary Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America
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Myers JE, Dujovne GA, Galuppo LD, Conley AJ, Moore PF, Mok MY, Aristizabal FA, Christensen BW. Theriogenology question of the month. Granulosa-theca cell tumor. J Am Vet Med Assoc 2014; 245:179-82. [PMID: 24984126 DOI: 10.2460/javma.245.2.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- James E Myers
- Loomis Basin Equine Medical Center, 2973 Penryn Rd, Penryn, CA 95663
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Daniaux LA, Laurenson MP, Marks SL, Moore PF, Taylor SL, Chen RX, Zwingenberger AL. Ultrasonographic thickening of the muscularis propria in feline small intestinal small cell T-cell lymphoma and inflammatory bowel disease. J Feline Med Surg 2013; 16:89-98. [PMID: 23900499 DOI: 10.1177/1098612x13498596] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Gastrointestinal lymphoma is the most common form of lymphoma in the cat. More recently, an ultrasonographic pattern associated with feline small cell T-cell gastrointestinal lymphoma has been recognized as a diffuse thickening of the muscularis propria of the small intestine. This pattern is also described with feline inflammatory bowel disease. To evaluate the similarities between the diseases, we quantified the thickness of the muscularis propria layer in the duodenum, jejunum and ileum of 14 cats affected by small cell T-cell lymphoma and inflammatory bowel disease (IBD) and 19 healthy cats. We found a significantly increased thickness of the muscularis propria in cats with lymphoma and IBD compared with healthy cats. The mean thickness of the muscularis propria in cats with lymphoma or IBD was twice the thickness of that of healthy cats, and was the major contributor to significant overall bowel wall thickening in the duodenum and jejunum. A muscularis to submucosa ratio >1 is indicative of an abnormal bowel segment. Colic lymph nodes in cats with lymphoma were increased in size compared with healthy cats. In cats with gastrointestinal lymphoma and histologic transmural infiltration of the small intestines, colic or jejunal lymph nodes were rounded, increased in size and hypoechoic.
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Affiliation(s)
- Lise A Daniaux
- 1William R Pritchard Veterinary Medical Teaching Hospital, University of California, Davis, CA, USA
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O'Brien D, Moore PF, Vernau W, Peauroi JR, Rebhun RB, Rodriguez CO, Skorupski KA. Clinical characteristics and outcome in dogs with splenic marginal zone lymphoma. J Vet Intern Med 2013; 27:949-54. [PMID: 23734665 DOI: 10.1111/jvim.12116] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 02/28/2013] [Accepted: 04/18/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Splenic marginal zone lymphoma (MZL) is a form of indolent B-cell lymphoma that is not well characterized in dogs. HYPOTHESIS/OBJECTIVES The purpose of this study was to describe clinical characteristics and outcome in dogs with splenic MZL confirmed by histopathology, immunophenotyping, and molecular clonality assessment. We hypothesized that affected dogs would have prolonged survival time with splenectomy alone. ANIMALS Thirty-four dogs were included. Twenty-nine dogs were diagnosed after splenectomy, and 5 dogs were diagnosed at necropsy. METHODS Pathology records were searched for dogs with histologically confirmed splenic MZL. Clinical and outcome data were retrospectively collected by medical record review, and prognostic factors were evaluated. Histopathology was reviewed by a board-certified pathologist, and tissue sections were subjected to immunophenotyping and molecular clonality assessment by PCR. RESULTS Immunohistochemistry confirmed a B-cell phenotype for all dogs. Molecular clonality assessment was performed in 33 of 34 dogs, of which 24 had clonal rearrangement of immunoglobulin (Ig) loci, 3 had pseudoclonal rearrangement, and 6 had polyclonal rearrangement. The overall median survival time (MST) for the 29 dogs that underwent splenectomy was 383 days. The MST for 14 of 29 asymptomatic dogs that underwent splenectomy for MZL was 1,153 days as compared to 309 days for 15/29 dogs with clinical signs referable to splenic MZL (P = .018). Lymph node involvement, hemoabdomen, anemia, chemotherapy, and concurrent malignancy did not affect survival outcome. CONCLUSIONS AND CLINICAL IMPORTANCE Dogs diagnosed with splenic MZL can have prolonged survival with splenectomy alone, without the use of adjuvant chemotherapy. Asymptomatic dogs may have a better survival outcome.
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Affiliation(s)
- D O'Brien
- Department of Surgical and Radiological Sciences, Davis, CA, USA.
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Junginger J, Lemensieck F, Moore PF, Schwittlick U, Nolte I, Hewicker-Trautwein M. Canine gut dendritic cells in the steady state and in inflammatory bowel disease. Innate Immun 2013; 20:145-60. [PMID: 23723379 DOI: 10.1177/1753425913485475] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Alongside the intestinal border, dendritic cells (DCs) sample large amounts of endogenous and potentially pathogenic antigens followed by initiation of protective immune responses or induction of tolerance. Breakdown of oral tolerance towards commensal bacteria is suggested to be crucial for the development of both human and canine inflammatory bowel disease (IBD). The aim of this study was to investigate canine intestinal DCs in the steady state and in dogs with IBD using multicolour immunofluorescence. In the healthy gut, DC-like cells expressed MHC II, CD1a8.2 and CD11c, and, in lower amounts, CD11b, within lamina propria, Peyer's patches (PPs) and mesenteric lymph nodes (MLNs), whereas those expressing CD80 and CD86 were only present in PPs and MLNs. Occasionally, DC-like cells were in contact with the intestinal lumen through transepithelial projections. In canine IBD, CD1a8.2+, CD11b+ and CD11c+ DC-like cells were decreased within the stomach, duodenum and colon, whereas the colonic mucosa revealed elevation of CD86+ DC-like cells. The complex network of DC-like cells in the gut indicates their important role in canine mucosal immunity, including active sampling of luminal antigens. Furthermore, their shift in diseased dogs suggests a pathogenetic significance for canine IBD.
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Affiliation(s)
- Johannes Junginger
- 1Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
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Luff JA, Yuan H, Suter MM, Müller EJ, Schlegel R, Moore PF. Canine keratinocytes upregulate type I interferons and proinflammatory cytokines in response to poly(dA:dT) but not to canine papillomavirus. Vet Immunol Immunopathol 2013; 153:177-86. [PMID: 23557936 DOI: 10.1016/j.vetimm.2013.02.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 01/25/2013] [Accepted: 02/04/2013] [Indexed: 01/11/2023]
Abstract
Papillomaviruses (PV) are double stranded (ds) DNA viruses that infect epithelial cells within the skin or mucosa, most often causing benign neoplasms that spontaneously regress. The immune system plays a key role in the defense against PVs. Since these viruses infect keratinocytes, we wanted to investigate the role of the keratinocyte in initiating an immune response to canine papillomavirus-2 (CPV-2) in the dog. Keratinocytes express a variety of pattern recognition receptors (PRR) to distinguish different cutaneous pathogens and initiate an immune response. We examined the mRNA expression patterns for several recently described cytosolic nucleic acid sensing PRRs in canine monolayer keratinocyte cultures using quantitative reverse transcription-polymerase chain reaction. Unstimulated normal cells were found to express mRNA for melanoma differentiation associated gene 5 (MDA5), retinoic acid-inducible gene I (RIG-I), DNA-dependent activation of interferon regulatory factors, leucine rich repeat flightless interacting protein 1, and interferon inducible gene 16 (IFI16), as well as their adaptor molecules myeloid differentiation primary response gene 88, interferon-β promoter stimulator 1, and endoplasmic reticulum-resident transmembrane protein stimulator of interferon genes. When stimulated with synthetic dsDNA [poly(dA:dT)] or dsRNA [poly(I:C)], keratinocytes responded with increased mRNA expression levels for interleukin-6, tumor necrosis factor-α, interferon-β, RIG-I, IFI16, and MDA5. There was no detectable increase in mRNA expression, however, in keratinocytes infected with CPV-2. Furthermore, CPV-2-infected keratinocytes stimulated with poly(dA:dT) and poly(I:C) showed similar mRNA expression levels for these gene products when compared with expression levels in uninfected cells. These results suggest that although canine keratinocytes contain functional PRRs that can recognize and respond to dsDNA and dsRNA ligands, they do not appear to recognize or initiate a similar response to CPV-2.
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Affiliation(s)
- Jennifer A Luff
- Department of Veterinary Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA.
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Abstract
In dogs, papillomaviruses are thought to cause oral and cutaneous papillomas and pigmented plaques. Eight canine papillomaviruses have been fully sequenced to date. Four of these canine papillomaviruses, including Canis familiaris papillomavirus (CPV)-3, CPV-4, CPV-5, and CPV-8, were amplified from pigmented plaques. Given the identification of several different canine papillomaviruses within pigmented plaques, it is likely that there are additional papillomavirus sequences that have not been previously identified. The aim of the present study was to amplify papillomavirus DNA from pigmented plaques and identify potentially novel papillomavirus sequences through nucleotide sequence analysis. Polymerase chain reaction was used to amplify DNA sequences of the papillomavirus L1 gene from 27 pigmented plaques. Identification of novel papillomavirus sequences was based on less than 90% shared DNA homology to any known papillomavirus. DNA from 10 different papillomaviruses was identified within the pigmented plaques, including 6 putative novel papillomavirus sequences. CPV-4 was detected within 41% (11/27) of the pigmented plaques, while CPV-5 was identified within 2 pigmented plaques and CPV-3 within a single pigmented plaque. A previously identified novel papillomavirus sequence was identified within 2 pigmented plaques. The remaining 11 pigmented plaques contained 6 papillomavirus DNA sequences that have not been previously reported. These putative novel PV sequences were most similar to the canine papillomaviruses that have been detected within canine pigmented plaques.
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Affiliation(s)
- Jennifer A Luff
- Department of Pathology, Microbiology, and Immunology, One Shields Avenue, Room 4206, Building VM3A, School of Veterinary Medicine, University of California, Davis, Davis, CA 95616, USA.
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Robert-Tissot C, Rüegger VL, Cattori V, Meli ML, Riond B, Moore PF, Engels M, Franchini M, Hofmann-Lehmann R, Lutz H. Stimulation with a class A CpG oligonucleotide enhances resistance to infection with feline viruses from five different families. Vet Res 2012; 43:60. [PMID: 22906110 PMCID: PMC3537549 DOI: 10.1186/1297-9716-43-60] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Accepted: 07/30/2012] [Indexed: 12/24/2022] Open
Abstract
Domestic cats are commonly affected by viral pathogens that induce lengthy infections with fatal outcomes. Prevention of viral propagation is of primordial importance in shelters and catteries, where cats from different backgrounds have narrow contacts. Oligonucleotides (ODN) containing cytosine-phosphate-guanosine motifs of class A (CpG-A) are highly potent synthetic inducers of innate antiviral mechanisms. The aim of this study was to test their ability to modulate innate immune responses and prevent viral replication as stand-alone agents in the domestic cat. CpG-A stimulation of feline peripheral blood mononuclear cells (PBMCs) enhanced their proliferation, increased the presence of co-stimulatory molecules on their surface and influenced their gene expression profiles in an antiviral orientation. Incubation of the supernatants of CpG-A stimulated PBMCs with feline cell lines of epithelial and fibroblastic origin induced expression of the antiviral myxovirus resistance (Mx) gene in these target cells, which also showed enhanced resistance to feline viruses from five distinct families, namely Coronaviridae, Herpesviridae, Caliciviridae, Parvoviridae, and Retroviridae. Most importantly, subcutaneous administration of CpG-A in domestic cats systemically increased the expression of Mx, reaching maximal levels within 24 h. Plasma from treated cats could furthermore inhibit viral replication in vitro. Altogether, our data highlight the promising potential of CpG-A to induce a preventive antiviral state in the cat and to protect feline populations against a broad range of virus infections.
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Affiliation(s)
- Céline Robert-Tissot
- Clinical Laboratory, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, CH-8057, Zurich, Switzerland.
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Moore AS, Frimberger AE, Sullivan N, Moore PF. Histologic and immunohistochemical review of splenic fibrohistiocytic nodules in dogs. J Vet Intern Med 2012; 26:1164-8. [PMID: 22882592 DOI: 10.1111/j.1939-1676.2012.00986.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 05/06/2012] [Accepted: 06/26/2012] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Splenic fibrohistiocytic nodules (SFHN) are commonly diagnosed. It is suspected that these represent a heterogeneous group of malignant and nonmalignant diseases, separation of which could improve the ability of clinicians to prognosticate for dogs. HYPOTHESIS/OBJECTIVES Immunohistochemistry will differentiate histologic diagnoses within the group of SFHN; survival after splenectomy is associated with those histologic types. ANIMALS Thirty-two dogs with SFHN treated by or under direction from veterinary oncologists. METHODS Retrospective case record analysis from dogs followed from splenectomy until death. Clinical, histopathologic, and immunohistochemistry data analyzed for an association with survival time. RESULTS Thirty-two dogs had SFHN; grade 1 (2 dogs), grade 2 (9 dogs), and grade 3 (lymphoid percentage <40%; 21 dogs). Twenty-two dogs died, 10 were censored (9 alive median of 883 days after splenectomy). Median overall survival was 387 days, and grade 3 SFHN was negatively [corrected] associated with survival time as previously reported (P < .001). Of 31 available samples, dogs had diseases reclassified as nodular hyperplasia (13; 8 complex, 5 lymphoid including 2 marginal zone), lymphoma (4; 2 marginal zone lymphoma, 1 high grade B-cell lymphoma, and 1 marginal zone transitional to high grade B-cell lymphoma), 8 stromal sarcomas, and 6 histiocytic sarcomas. Dogs with histiocytic sarcoma had worse survival (median 74 days) than dogs with other diseases. CONCLUSIONS AND CLINICAL IMPORTANCE Splenic histiocytic sarcoma is an aggressive disease; however, some dogs with stromal sarcomas had long survival times. The term SFHN is no longer warranted for this group of disorders.
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Affiliation(s)
- A S Moore
- Veterinary Oncology Consultants, Wauchope, NSW, Australia.
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Bartoskova A, Turanek-Knotigova P, Matiasovic J, Oreskovic Z, Vicenova M, Stepanova H, Ondrackova P, Vitasek R, Leva L, Moore PF, Faldyna M. γδ T lymphocytes are recruited into the inflamed uterus of bitches suffering from pyometra. Vet J 2012; 194:303-8. [PMID: 22771147 DOI: 10.1016/j.tvjl.2012.05.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 05/12/2012] [Accepted: 05/23/2012] [Indexed: 12/23/2022]
Abstract
Very little is known about the occurrence of immune system cells in the canine uterus. The aim of this study was to generate information about lymphocyte subsets that are present in the healthy canine uterus and that are recruited under inflammatory conditions caused by pyometra. Using immunohistochemistry and flow cytometry, a significant influx of γδ T lymphocytes was found in pyometra samples mainly due to recruitment of γδ(+)/CD8(-) T lymphocytes. The relative expression of genes encoding selected cytokines/chemokines was evaluated in samples from healthy and pyometra-affected uteri. Expression of pro-inflammatory cytokines (including IL-1β, TNF-α, IL-8, IL-17 and IFN-γ) and chemokines (including CXCL10, CCL4 and CCL5) was upregulated in pyometra samples confirming the presence of inflammation. In contrast, the expression of the homeostatic chemokine CCL25 and of the anti-inflammatory cytokine IL-10 was downregulated and unchanged, respectively.
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Affiliation(s)
- A Bartoskova
- Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
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Mastrorilli C, Spangler EA, Christopherson PW, Aubry OA, Newton JC, Smith AN, Kennis RA, Weismann JL, Moore PF. Multifocal cutaneous histiocytic sarcoma in a young dog and review of histiocytic cell immunophenotyping. Vet Clin Pathol 2012; 41:412-8. [DOI: 10.1111/j.1939-165x.2012.00449.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Cinzia Mastrorilli
- Department of Pathobiology, College of Veterinary Medicine; Auburn University; Auburn; AL; USA
| | - Elizabeth A. Spangler
- Department of Pathobiology, College of Veterinary Medicine; Auburn University; Auburn; AL; USA
| | - Peter W. Christopherson
- Department of Pathobiology, College of Veterinary Medicine; Auburn University; Auburn; AL; USA
| | - Oceane A. Aubry
- Department of Clinical Sciences, College of Veterinary Medicine; Auburn University; Auburn; AL; USA
| | - Joseph C. Newton
- Department of Pathobiology, College of Veterinary Medicine; Auburn University; Auburn; AL; USA
| | - Annette N. Smith
- Department of Clinical Sciences, College of Veterinary Medicine; Auburn University; Auburn; AL; USA
| | - Robert A. Kennis
- Department of Clinical Sciences, College of Veterinary Medicine; Auburn University; Auburn; AL; USA
| | - Jaime L. Weismann
- Department of Pathobiology, College of Veterinary Medicine; Auburn University; Auburn; AL; USA
| | - Peter F. Moore
- Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine; University of California-Davis; Davis; CA; USA
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Brockley LK, Heading KL, Jardine JE, Moore PF, Bennett PF. Polyostotic lymphoma with multiple pathological fractures in a six-month-old cat. J Feline Med Surg 2012; 14:285-91. [PMID: 22334622 DOI: 10.1177/1098612x12439258] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A 6-month-old female neutered domestic shorthair cat was examined for pain and swelling of the distal limbs. Swelling and malalignment of both carpi, dorsiflexion of the distal metatarsals and a mild, multicentric lymphadenopathy were detected on examination. Screening blood tests revealed a biclonal gammopathy, hypercalcemia and atypical leukocytes. Survey radiographs revealed lysis and proliferative changes within the physes. Multiple pathological physeal fractures were present, including the distal radii, metacarpal and metatarsal bones. No treatment was attempted and the patient was euthanased. Histopathology revealed infiltration by monomorphic round cells within the liver, spleen, kidney and bone marrow. Immunohistochemistry revealed strong reactivity to CD20. Clonality assays revealed clonal results for the B-cell loci, consistent with B-cell lymphoma. To the authors' knowledge this is the first report of polyostotic lymphoma with multiple pathological fractures in a cat. The predominantly distal distribution of osseous lesions is rarely reported in dogs and humans.
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Abstract
A 6-year-old spayed Labrador Retriever Mix dog was evaluated for a 2-week history of progressive generalized weakness and reluctance to stand. Physical examination revealed severe weakness with obtunded mentation, head tilt, bilateral nystagmus, and decreased vision. CBC findings included mild nonregenerative anemia, marked thrombocytopenia, and a few atypical mononuclear cells on the blood film. The cells were 15-30 μm in diameter and had round to oval to reniform centrally placed nuclei with stippled chromatin, prominent nucleoli, and abundant basophilic cytoplasm with numerous discrete vacuoles and, occasionally, small azurophilic granules. Similar cells were found in bone marrow. On histologic examination of tissues collected at necropsy, neoplastic cells were detected in bone marrow, hepatic sinusoids, cerebral and meningeal vessels, and in capillaries of the heart, renal interstitium, small intestinal submucosa, and muscularis, and alveolar septa. A small discrete mass in the right atrium consisted of similar neoplastic cells, and the spleen was diffusely infiltrated. Tissue distribution was suggestive of intravascular lymphoma. Neoplastic cells in tissue sections were immunoreactive for vimentin, CD18, CD45, and granzyme B and lacked immunoreactivity for cytokeratin. Neoplastic cells on bone marrow aspirate smears and blood films lacked immunoreactivity for CD3, CD79a, CD1c, CD11b, CD11c, CD11d, and E-cadherin. In the absence of immunophenotypic evidence for the neoplastic cells being derived from B-cell, T-cell, or histocytic/dendritic lineages and the lack of clonal antigen receptor gene rearrangement(s), along with positive immunoreactivity for granzyme B, a tumor of NK cells was considered likely. Based on current knowledge, this is the first report of canine intravascular lymphoma, of probable NK cell origin, with peripheral blood involvement.
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Affiliation(s)
- Laura V Lane
- Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK 74078, USA.
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Leonard BC, Marks SL, Outerbridge CA, Affolter VK, Kananurak A, Young A, Moore PF, Bannasch DL, Bevins CL. Activity, expression and genetic variation of canine β-defensin 103: a multifunctional antimicrobial peptide in the skin of domestic dogs. J Innate Immun 2012; 4:248-59. [PMID: 22261569 DOI: 10.1159/000334566] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 10/19/2011] [Indexed: 01/28/2023] Open
Abstract
The skin functions as more than a physical barrier to infection. Epithelial cells of the skin can synthesize antimicrobial peptides, including defensins, which exhibit direct antimicrobial activity. Here we characterize the expression pattern, genetic variation and activity of the major β-defensin expressed in canine skin, canine β-defensin 103 (CBD103). The gene encoding CBD103 exhibits two forms of polymorphism: a common 3-basepair deletion allele and a gene copy-number variation. Golden retrievers and Labrador retrievers were the only breeds that encoded the variant allele of CBD103, termed CBD103ΔG23. Both these breeds also exhibited a CBD103 gene copy-number polymorphism that ranged from 2 to 4 gene-copies per diploid genome. Recombinant CBD103 and CBD103ΔG23, as well as the human ortholog human β-defensin 3 (hBD3) and hBD3ΔG23, showed potent and comparable antimicrobial killing against both methicillin-susceptible and methicillin-resistant Staphylococcus pseudintermedius. Skin biopsy specimens from dogs with atopic dermatitis revealed CBD103 expression levels similar to those in healthy controls and comparable at lesional and nonlesional sites. This expression pattern in dogs differs from the previously reported reduced expression of the human ortholog in atopic dermatitis. Overall, the similarities of CBD103 and its human ortholog reported here support the notion that the domestic dog may serve as a valuable model for studying β-defensin biology in the skin.
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Affiliation(s)
- Brian C Leonard
- Department of Microbiology and Immunology, UC Davis School of Medicine, Davis, CA 95616-8645, USA
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Hilton H, Nieto JE, Moore PF, Harmon FA, Naydan DK, Snyder JR. Expression of cyclooxygenase genes in the jejunum of horses during low-flow ischemia and reperfusion. Am J Vet Res 2011; 72:681-6. [PMID: 21529221 DOI: 10.2460/ajvr.72.5.681] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine expression of cyclooxygenase (COX) genes 1 and 2 (also called prostaglandin-endoperoxide synthases 1 and 2) and stability of housekeeping gene expression during low-flow ischemia and reperfusion in the jejunum of horses. ANIMALS 5 healthy adult horses. PROCEDURES Horses were anesthetized, and two 30-cm segments of jejunum were surgically exteriorized. Blood flow was maintained at baseline (untreated) values in 1 (control) segment and was decreased to 20% of baseline (low-flow ischemia) for 75 minutes, followed by 75 minutes of reperfusion, in the other (experimental) segment. Biopsy samples were collected from experimental segments at baseline (T0), after 75 minutes of ischemia (T1), and after 75 minutes of reperfusion (T2); samples were collected from control segments at T0 and T2. Horses were euthanized 24 hours after induction of ischemia (T3), and additional samples were collected. Samples were evaluated histologically. Total RNA was extracted; expression of COX genes and stability of 8 housekeeping genes were determined via quantitative real-time PCR assays. RESULTS COX-1 and COX-2 genes were constitutively expressed in baseline samples. Low-flow ischemia resulted in significant upregulation of COX-2 gene expression at each subsequent time point, compared with baseline values. The most stably expressed reference genes were β-actin and hypoxanthine phosphoribosyltransferase, whereas glyceraldehyde 3-phosphate dehydrogenase and β-2 microglobulin were the least stably expressed. CONCLUSIONS AND CLINICAL RELEVANCE Low-flow ischemia resulted in upregulation of COX-2 gene expression in the jejunum of horses. Housekeeping genes traditionally used as internal standards may not be stable in this tissue during arterial low-flow ischemia and reperfusion.
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Affiliation(s)
- Hugo Hilton
- Department of Surgical and Radiological Sciences, Comparative Gastrointestinal Laboratory, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616, USA.
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Leonard BC, Chu H, Johns JL, Gallo RL, Moore PF, Marks SL, Bevins CL. Expression and activity of a novel cathelicidin from domestic cats. PLoS One 2011; 6:e18756. [PMID: 21533281 PMCID: PMC3075274 DOI: 10.1371/journal.pone.0018756] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Accepted: 03/17/2011] [Indexed: 01/21/2023] Open
Abstract
Cathelicidins are small cationic antimicrobial peptides found in many species including primates, mammals, marsupials, birds and even more primitive vertebrates, such as the hagfish. Some animals encode multiple cathelicidins in their genome, whereas others have only one. This report identifies and characterizes feline cathelicidin (feCath) as the sole cathelicidin in domestic cats (Felis catus). Expression of feCath is predominantly found in the bone marrow, with lower levels of expression in the gastrointestinal tract and skin. By immunocytochemistry, feCath localizes to the cytoplasm of neutrophils in feline peripheral blood. Structurally, the mature feCath sequence is most similar to a subgroup of cathelicidins that form linear α-helices. feCath possesses antimicrobial activity against E. coli D31, Salmonella enterica serovar Typhimurium (IR715), Listeria monocytogenes and Staphylococcus pseudintermedius (clinical isolate) similar to that of the human ortholog, LL-37. In contrast, feCath lacks the DNA binding activity seen with LL-37. Given its similarity in sequence, structure, tissue expression, and antimicrobial activity, the cathelicidin encoded by cats, feCath, belongs to the subgroup of linear cathelicidins found not only in humans, but also non-human primates, dogs, mice, and rats.
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Affiliation(s)
- Brian C. Leonard
- Department of Microbiology and Immunology, UC Davis School of Medicine, Davis, California, United States of America
| | - Hiutung Chu
- Department of Microbiology and Immunology, UC Davis School of Medicine, Davis, California, United States of America
| | - Jennifer L. Johns
- Department of Pathology, Microbiology and Immunology, UC Davis School of Veterinary Medicine, Davis, California, United States of America
| | - Richard L. Gallo
- Division of Dermatology, University of California San Diego and VA San Diego Healthcare System, San Diego, California, United States of America
| | - Peter F. Moore
- Department of Pathology, Microbiology and Immunology, UC Davis School of Veterinary Medicine, Davis, California, United States of America
| | - Stanley L. Marks
- Department of Medicine and Epidemiology, UC Davis School of Veterinary Medicine, Davis, California, United States of America
| | - Charles L. Bevins
- Department of Microbiology and Immunology, UC Davis School of Medicine, Davis, California, United States of America
- * E-mail:
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Colegrove KM, Wellehan JFX, Rivera R, Moore PF, Gulland FMD, Lowenstine LJ, Nordhausen RW, Nollens HH. Polyomavirus infection in a free-ranging California sea lion (Zalophus californianus) with intestinal T-cell lymphoma. J Vet Diagn Invest 2010; 22:628-32. [PMID: 20622238 DOI: 10.1177/104063871002200422] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
An adult female California sea lion (Zalophus californianus) that stranded in central California was found to have a small glossal polypoid mass on gross necropsy. Histologically, the mass was consistent with a fibropapilloma, and intranuclear inclusions were found within endothelial cells lining small arterioles within the mass. Electron microscopy revealed 40-nm virions within endothelial intranuclear inclusions. Rolling circle amplification was used to obtain a partial viral genomic sequence. Sequence analysis identified the virus as a novel polyomavirus, tentatively named California sea lion polyomavirus 1. In addition, the sea lion had a severely thickened small intestine and swollen pale kidneys on gross examination. Severe renal amyloidosis with chronic interstitial nephritis was diagnosed histologically as well as T-cell intestinal lymphoma, which was confirmed via immunophenotyping and molecular clonality. The relationship, if any, between polyomavirus infection and the other disease processes in this sea lion is not known, but it is considered unlikely that the polyomavirus induced the lymphoma.
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Affiliation(s)
- Kathleen M Colegrove
- Zoological Pathology Program, University of Illinois, Loyola University Medical Center, Building 101, Room 0745, 2160 South First Avenue, Maywood, IL 60153, USA.
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