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Razmara AM, Farley LE, Harris RM, Judge SJ, Lammers M, Iranpur KR, Johnson EG, Dunai C, Murphy WJ, Brown CT, Rebhun RB, Kent MS, Canter RJ. Preclinical evaluation and first-in-dog clinical trials of PBMC-expanded natural killer cells for adoptive immunotherapy in dogs with cancer. J Immunother Cancer 2024; 12:e007963. [PMID: 38631708 PMCID: PMC11029326 DOI: 10.1136/jitc-2023-007963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Natural killer (NK) cells are cytotoxic cells capable of recognizing heterogeneous cancer targets without prior sensitization, making them promising prospects for use in cellular immunotherapy. Companion dogs develop spontaneous cancers in the context of an intact immune system, representing a valid cancer immunotherapy model. Previously, CD5 depletion of peripheral blood mononuclear cells (PBMCs) was used in dogs to isolate a CD5dim-expressing NK subset prior to co-culture with an irradiated feeder line, but this can limit the yield of the final NK product. This study aimed to assess NK activation, expansion, and preliminary clinical activity in first-in-dog clinical trials using a novel system with unmanipulated PBMCs to generate our NK cell product. METHODS Starting populations of CD5-depleted cells and PBMCs from healthy beagle donors were co-cultured for 14 days, phenotype, cytotoxicity, and cytokine secretion were measured, and samples were sequenced using the 3'-Tag-RNA-Seq protocol. Co-cultured human PBMCs and NK-isolated cells were also sequenced for comparative analysis. In addition, two first-in-dog clinical trials were performed in dogs with melanoma and osteosarcoma using autologous and allogeneic NK cells, respectively, to establish safety and proof-of-concept of this manufacturing approach. RESULTS Calculated cell counts, viability, killing, and cytokine secretion were equivalent or higher in expanded NK cells from canine PBMCs versus CD5-depleted cells, and immune phenotyping confirmed a CD3-NKp46+ product from PBMC-expanded cells at day 14. Transcriptomic analysis of expanded cell populations confirmed upregulation of NK activation genes and related pathways, and human NK cells using well-characterized NK markers closely mirrored canine gene expression patterns. Autologous and allogeneic PBMC-derived NK cells were successfully expanded for use in first-in-dog clinical trials, resulting in no serious adverse events and preliminary efficacy data. RNA sequencing of PBMCs from dogs receiving allogeneic NK transfer showed patient-unique gene signatures with NK gene expression trends in response to treatment. CONCLUSIONS Overall, the use of unmanipulated PBMCs appears safe and potentially effective for canine NK immunotherapy with equivalent to superior results to CD5 depletion in NK expansion, activation, and cytotoxicity. Our preclinical and clinical data support further evaluation of this technique as a novel platform for optimizing NK immunotherapy in dogs.
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Affiliation(s)
- Aryana M Razmara
- Department of Surgery, University of California Davis School of Medicine, Sacramento, California, USA
| | - Lauren E Farley
- Department of Surgery, University of California Davis School of Medicine, Sacramento, California, USA
| | - Rayna M Harris
- Department Population Health and Reproduction, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Sean J Judge
- Department of Surgery, University of California Davis School of Medicine, Sacramento, California, USA
| | - Marshall Lammers
- Department of Surgery, University of California Davis School of Medicine, Sacramento, California, USA
| | - Khurshid R Iranpur
- Department of Surgery, University of California Davis School of Medicine, Sacramento, California, USA
| | - Eric G Johnson
- Department of Surgical and Radiological Sciences, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Cordelia Dunai
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA
| | - William J Murphy
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA
| | - C Titus Brown
- Department Population Health and Reproduction, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Robert B Rebhun
- Department of Surgical and Radiological Sciences, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Michael S Kent
- Department of Surgical and Radiological Sciences, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Robert J Canter
- Department of Surgery, University of California Davis School of Medicine, Sacramento, California, USA
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Razmara AM, Gingrich AA, Toedebusch CM, Rebhun RB, Murphy WJ, Kent MS, Canter RJ. Improved characterization and translation of NK cells for canine immunotherapy. Front Vet Sci 2024; 11:1336158. [PMID: 38379924 PMCID: PMC10877038 DOI: 10.3389/fvets.2024.1336158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 01/11/2024] [Indexed: 02/22/2024] Open
Abstract
The field of cancer immunology has seen a meteoric rise in interest and application due to the discovery of immunotherapies that target immune cells, often leading to dramatic anti-tumor effects. However, successful cellular immunotherapy for solid tumors remains a challenge, and the application of immunotherapy to dogs with naturally occurring cancers has emerged as a high yield large animal model to bridge the bench-to-bedside challenges of immunotherapies, including those based on natural killer (NK) cells. Here, we review recent developments in the characterization and understanding of canine NK cells, a critical springboard for future translational NK immunotherapy research. The characterization of canine NK cells is exceptionally pertinent given the ongoing challenges in defining them and contextualizing their similarities and differences compared to human and murine NK cells compounded by the limited availability of validated canine specific reagents. Additionally, we summarize the current landscape of the clinical and translational literature employing strategies to capitalize on endogenous and exogenous NK cell immunotherapy in canine cancer patients. The insights regarding efficacy and immune correlates from these trials provide a solid foundation to design and test novel combinational therapies to enhance NK cell activity with the added benefit of motivating comparative work to translate these findings to human cancers with extensive similarities to their canine counterparts. The compilation of knowledge from basic canine NK phenotype and function to applications in first-in-dog clinical trials will support the canine cancer model and enhance translational work to improve cancer outcomes for both dogs and humans.
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Affiliation(s)
- Aryana M. Razmara
- Department of Surgery, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Alicia A. Gingrich
- MD Anderson Cancer Center, University of Texas, Houston, TX, United States
| | - Christine M. Toedebusch
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Robert B. Rebhun
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - William J. Murphy
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Michael S. Kent
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Robert J. Canter
- Department of Surgery, University of California Davis School of Medicine, Sacramento, CA, United States
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Gingrich AA, Razmara AM, Gingrich PW, Rebhun RB, Murphy WJ, Kent MS, Brown CT, Siegel JB, Canter RJ. Missing a "Missing Self" Mechanism: Modeling and Detection of Ly49 Expression in Canine NK Cells. Immunohorizons 2023; 7:760-770. [PMID: 37971282 PMCID: PMC10696421 DOI: 10.4049/immunohorizons.2300092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/19/2023] Open
Abstract
NK cells are a key focus in immuno-oncology, based on their ability to eliminate malignant cells without prior sensitization. Dogs are valuable models for translational immunotherapy studies, especially for NK cells, where critical species differences exist between mice and humans. Given that the mechanism for recognition of "self" by canine NK cells is currently unknown, we sought to evaluate expression of Ly49 in canine NK cells using in silico and high-throughput techniques. We interrogated the identified polymorphism/mutation in canine Ly49 and assessed the potential impact on structure using computational modeling of three-dimensional protein structure and protein-protein docking of canine Ly49 with MHC class I (MHC-I). Bulk and single-cell RNA-sequencing analysis was performed to detect gene expression of Ly49/KLRA1 in resting and activated NK cells. Tertiary protein structure demonstrated significant structural similarity to the known murine system. Molecular docking of canine Ly49 with MHC-I was favorable, converging at a single low-energy conformation. RNA sequencing revealed expression of Ly49/KLRA1 in both resting and activated NK cells and demonstrated almost exclusive expression of the gene in the NK cluster at the single-cell level. Despite prior reports of a mutated, nonfunctional canine Ly49, our data support that the protein product is predicted to bind to MHC-I in a comparable conformation to the murine system and is expressed in canine NK cells with upregulation following activation. Taken together, these data suggest that Ly49 is capable of recognizing MHC-I and therefore regulating NK cell function in dogs.
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Affiliation(s)
- Alicia A. Gingrich
- Department of Surgery, University of California, Davis School of Medicine, Sacramento, CA
| | - Aryana M. Razmara
- Department of Surgery, University of California, Davis School of Medicine, Sacramento, CA
| | - Phillip W. Gingrich
- Department of Biochemistry and Molecular Medicine, University of California, Davis School of Medicine, Sacramento, CA
| | - Robert B. Rebhun
- Department of Surgical and Radiological Sciences, University of California, Davis School of Veterinary Medicine, Davis, CA
| | - William J. Murphy
- Department of Dermatology, University of California, Davis School of Medicine, Sacramento, CA
| | - Michael S. Kent
- Department of Surgical and Radiological Sciences, University of California, Davis School of Veterinary Medicine, Davis, CA
| | - C. Titus Brown
- Department of Population Health and Reproduction, University of California, Davis School of Veterinary Medicine, Davis, CA
| | - Justin B. Siegel
- Department of Biochemistry and Molecular Medicine, University of California, Davis School of Medicine, Sacramento, CA
| | - Robert J. Canter
- Department of Surgery, University of California, Davis School of Medicine, Sacramento, CA
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Lopez-Montaño M, Jimenez-Ortega L, Cruz-Hernandez TR, Hernandez-Chavez VG, Montiel-Cervantes LA, Reyes-Maldonado E, Vela-Ojeda J. Significant increase in MIC-A and MIC-B and soluble MIC-A and MIC-B in canine lymphomas. Vet Immunol Immunopathol 2023; 264:110647. [PMID: 37672843 DOI: 10.1016/j.vetimm.2023.110647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/10/2023] [Accepted: 08/23/2023] [Indexed: 09/08/2023]
Abstract
Non-Hodkin's lymphoma (NHL) is the most frequent hematologic malignancy in humans and dogs. NKG2D is one of the most critical receptors on NK cells, recognizing their natural ligands on malignant cells such as A and B major histocompatibility complex-related proteins (MIC-A and MIC-B). Soluble molecules (sMIC-A and sMIC-B) can interfere with immune synapsis between NK cells and tumor cells, impeding NK cytotoxicity. The main objectives of this study were to analyze, in dogs with diffuse large B cell lymphoma, NK cell lymphoma, and reactive lymphadenopathies, the role of NK cells, their activating receptors NKG2D and NKp46, and their ligands MIC-A and MIC-B, as well as soluble molecules sMIC-A and sMIC-B. Thirty-six dogs with a possible diagnosis of NHL and eight healthy dogs were studied. NHL was diagnosed in 28 (78 %) dogs; in the other 8 (22 %), reactive lymphadenopathies were present. Most of the lymphomas corresponded to B cell NHL (82 %). The most predominant subtype was diffuse large B cell lymphoma (21, 71.5 %), followed by five cases (18 %) that were Non-B Non-T lymphomas (presumably NK cell lymphomas) and other B cell lymphomas (3, 10.5%). There were no cases of T cell NHL. MIC-A was positive in 7 of 27 (26 %) cases of NHL, and MIC-B in 20 of 27 (74 %) NHL. In non-malignant lymphadenopathies, three (37.5 %) dogs were positive for MIC-A, and five (62.5 %) expressed MIC-B. Dogs with lymphoma had higher numbers of NK cells than eight healthy dogs. In 15 dogs (12 cases with NHL and three cases with reactive adenopathies) and eight controls, there were no differences in the number of NK cells expressing NKP46 and NKG2D. NHL dogs had higher values of sMIC-A and sMIC-B. B-cell and NK cell lymphomas correspond to 86 % and 14 % of all canine lymphomas. MIC-A, MIC-B, and sMIC-A and sMIC-B were increased in canine lymphomas.
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Affiliation(s)
- Maresa Lopez-Montaño
- Departamento de Morfología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Manuel Carpio y Plan de Ayala, Del. Miguel Hidalgo, 11340 Mexico City, Mexico
| | - Laura Jimenez-Ortega
- Escuela Superior de Medicina, Sección de Estudios de Posgrado e Investigación, Instituto Politécnico Nacional, Plan de San Luis y Salvador Díaz Mirón S/N, Col. Casco de Santo Tomás, CP 11340 Mexico City, Mexico
| | - Teresa Rocio Cruz-Hernandez
- Centro de diagnóstico veterinario especializado (cedivete), Área de histopatología Calle Iztapalapa 9, San Antonio, Iztapalapa, CP 09900 Mexico City, Mexico
| | - Victor Gabriel Hernandez-Chavez
- Departamento de Morfología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Manuel Carpio y Plan de Ayala, Del. Miguel Hidalgo, 11340 Mexico City, Mexico
| | - Laura Arcelia Montiel-Cervantes
- Departamento de Morfología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Manuel Carpio y Plan de Ayala, Del. Miguel Hidalgo, 11340 Mexico City, Mexico; Departamento de Hematología, Unidad Médica de Alta Especialidad, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, Seris y Zaachila S/N Colonia La Raza, Azcapotzalco, 02990 Mexico City, Mexico
| | - Elba Reyes-Maldonado
- Departamento de Morfología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Manuel Carpio y Plan de Ayala, Del. Miguel Hidalgo, 11340 Mexico City, Mexico
| | - Jorge Vela-Ojeda
- Departamento de Morfología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Manuel Carpio y Plan de Ayala, Del. Miguel Hidalgo, 11340 Mexico City, Mexico.
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5
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Cockey JR, Leifer CA. Racing CARs to veterinary immuno-oncology. Front Vet Sci 2023; 10:1130182. [PMID: 36876006 PMCID: PMC9982037 DOI: 10.3389/fvets.2023.1130182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 01/31/2023] [Indexed: 02/19/2023] Open
Abstract
Chimeric antigen receptors (CARs) have demonstrated remarkable promise in human oncology over the past two decades, yet similar strategies in veterinary medicine are still in development. CARs are synthetically engineered proteins comprised of a specific antigen-binding single chain variable fragment (ScFv) fused to the signaling domain of a T cell receptor and co-receptors. Patient T cells engineered to express a CAR are directed to recognize and kill target cells, most commonly hematological malignancies. The U.S Food and Drug Administration (FDA) has approved multiple human CAR T therapies, but translation of these therapies into veterinary medicine faces many challenges. In this review, we discuss considerations for veterinary use including CAR design and cell carrier choice, and discuss the future promise of translating CAR therapy into veterinary oncology.
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Affiliation(s)
- James R Cockey
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Cynthia A Leifer
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
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6
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Rebhun RB, York D, Cruz SM, Judge SJ, Razmara AM, Farley LE, Brady RV, Johnson EG, Burton JH, Willcox J, Wittenburg LA, Woolard K, Dunai C, Stewart SL, Sparger EE, Withers SS, Gingrich AA, Skorupski KA, Al-Nadaf S, LeJeune AT, Culp WT, Murphy WJ, Kent MS, Canter RJ. Inhaled recombinant human IL-15 in dogs with naturally occurring pulmonary metastases from osteosarcoma or melanoma: a phase 1 study of clinical activity and correlates of response. J Immunother Cancer 2022; 10:e004493. [PMID: 35680383 PMCID: PMC9174838 DOI: 10.1136/jitc-2022-004493] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2022] [Indexed: 01/04/2023] Open
Abstract
PURPOSE Although recombinant human interleukin-15 (rhIL-15) has generated much excitement as an immunotherapeutic agent for cancer, activity in human clinical trials has been modest to date, in part due to the risks of toxicity with significant dose escalation. Since pulmonary metastases are a major site of distant failure in human and dog cancers, we sought to investigate inhaled rhIL-15 in dogs with naturally occurring lung metastases from osteosarcoma (OSA) or melanoma. We hypothesized a favorable benefit/risk profile given the concentrated delivery to the lungs with decreased systemic exposure. EXPERIMENTAL DESIGN We performed a phase I trial of inhaled rhIL-15 in dogs with gross pulmonary metastases using a traditional 3+3 cohort design. A starting dose of 10 µg twice daily × 14 days was used based on human, non-human primate, and murine studies. Safety, dose-limiting toxicities (DLT), and maximum tolerated dose (MTD) were the primary objectives, while response rates, progression-free and overall survival (OS), and pharmacokinetic and immune correlative analyses were secondary. RESULTS From October 2018 to December 2020, we enrolled 21 dogs with 18 dogs reaching the 28-day response assessment to be evaluable. At dose level 5 (70 μg), we observed two DLTs, thereby establishing 50 µg twice daily × 14 days as the MTD and recommended phase 2 dose. Among 18 evaluable dogs, we observed one complete response >1 year, one partial response with resolution of multiple target lesions, and five stable disease for an overall clinical benefit rate of 39%. Plasma rhIL-15 quantitation revealed detectable and sustained rhIL-15 concentrations between 1-hour and 6 hour postnebulization. Decreased pretreatment lymphocyte counts were significantly associated with clinical benefit. Cytotoxicity assays of banked peripheral blood mononuclear cells revealed significant increases in peak cytotoxicity against canine melanoma and OSA targets that correlated with OS. CONCLUSIONS In this first-in-dog clinical trial of inhaled rhIL-15 in dogs with advanced metastatic disease, we observed promising clinical activity when administered as a monotherapy for only 14 days. These data have significant clinical and biological implications for both dogs and humans with refractory lung metastases and support exploration of combinatorial therapies using inhaled rhIL-15.
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Affiliation(s)
- Robert B Rebhun
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - Daniel York
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - Sylvia Margret Cruz
- Division of Surgical Oncology, Department of Surgery, University of California Davis Medical Center, Sacramento, California, USA
| | - Sean J Judge
- Division of Surgical Oncology, Department of Surgery, University of California Davis Medical Center, Sacramento, California, USA
| | - Aryana M Razmara
- Division of Surgical Oncology, Department of Surgery, University of California Davis Medical Center, Sacramento, California, USA
| | - Lauren E Farley
- Division of Surgical Oncology, Department of Surgery, University of California Davis Medical Center, Sacramento, California, USA
| | - Rachel V Brady
- College of Veterinary Medicine, Colorado State University, Fort Collins, Colorado, USA
| | - Eric G Johnson
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - Jenna H Burton
- Department of Clinical Sciences, Colorado State University College of Veterinary Medicine, Fort Collins, Colorado, USA
| | - Jennifer Willcox
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - Luke A Wittenburg
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - Kevin Woolard
- Department of Pathology, University of California, Davis, California, USA
| | - Cordelia Dunai
- Department of Dermatology, University of California, Davis, California, USA
| | - Susan L Stewart
- Department of Public Health Sciences, University of California, Davis, California, USA
| | - Ellen E Sparger
- Department of Medicine and Epidemiology, University of California, Davis, California, USA
| | - Sita S Withers
- Department of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Alicia A Gingrich
- Division of Surgical Oncology, Department of Surgery, University of California Davis Medical Center, Sacramento, California, USA
| | - Katherine A Skorupski
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - Sami Al-Nadaf
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - Amandine T LeJeune
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - William Tn Culp
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - William J Murphy
- Department of Dermatology, University of California Davis Medical Center, Sacramento, California, USA
- Division of Hematology and Oncology, Department of Medicine, University of California Davis Medical Center, Sacramento, California, USA
| | - Michael S Kent
- Department of Surgical and Radiological Sciences, University of California, Davis, California, USA
| | - Robert J Canter
- Division of Surgical Oncology, Department of Surgery, University of California, Davis, California, USA
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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] [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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8
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Role of NK-Like CD8 + T Cells during Asymptomatic Borrelia burgdorferi Infection. Infect Immun 2022; 90:e0055521. [PMID: 35416707 DOI: 10.1128/iai.00555-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Lyme disease (LD) due to Borrelia burgdorferi is the most prevalent vector-borne disease in the United States. There is a poor understanding of how immunity contributes to bacterial control, pathology, or both during LD. Dogs in an area of endemicity were screened for B. burgdorferi and Anaplasma exposure and stratified according to seropositivity, presence of LD symptoms, and doxycycline treatment. Significantly elevated serum interleukin-21 (IL-21) and increased circulating CD3+ CD94+ lymphocytes with an NK-like CD8+ T cell phenotype were predominant in asymptomatic dogs exposed to B. burgdorferi. Both CD94+ T cells and CD3- CD94+ lymphocytes, corresponding to NK cells, from symptomatic dogs expressed gamma interferon (IFN-γ) at a 3-fold-higher frequency upon stimulation with B. burgdorferi than the same subset among endemic controls. Surface expression of activating receptor NKp46 was reduced on CD94+ T cells from LD, compared to cells after doxycycline treatment. A higher frequency of NKp46-expressing CD94+ T cells correlated with significantly increased peripheral blood mononuclear cell (PBMC) cytotoxic activity via calcein release assay. PBMCs from dogs with symptomatic LD showed significantly reduced killing ability compared with endemic control PBMCs. An elevated NK-like CD8+ T cell response was associated with protection against development of clinical LD, while excess IFN-γ was associated with clinical disease.
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9
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Sparger EE, Chang H, Chin N, Rebhun RB, Withers SS, Kieu H, Canter RJ, Monjazeb AM, Kent MS. T Cell Immune Profiles of Blood and Tumor in Dogs Diagnosed With Malignant Melanoma. Front Vet Sci 2021; 8:772932. [PMID: 34926643 PMCID: PMC8674490 DOI: 10.3389/fvets.2021.772932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/05/2021] [Indexed: 11/29/2022] Open
Abstract
Investigation of canine T cell immunophenotypes in canine melanomas as prognostic biomarkers for disease progression or predictive biomarkers for targeted immunotherapeutics remains in preliminary stages. We aimed to examine T cell phenotypes and function in peripheral blood mononuclear cells (PBMC) and baseline tumor samples by flow cytometry, and to compare patient (n = 11–20) T cell phenotypes with healthy controls dogs (n = 10–20). CD3, CD4, CD8, CD25, FoxP3, Ki67, granzyme B, and interferon-γ (IFN-γ) were used to classify T cell subsets in resting and mitogen stimulated PBMCs. In a separate patient cohort (n = 11), T cells were classified using CD3, CD4, CD8, FoxP3, and granzyme B in paired PBMC and single cell suspensions of tumor samples. Analysis of flow cytometric data of individual T cell phenotypes in PBMC revealed specific T cell phenotypes including FoxP3+ and CD25+FoxP3- populations that distinguished patients from healthy controls. Frequencies of IFN-γ+ cells after ConA stimulation identified two different patient phenotypic responses, including a normal/exaggerated IFN-γ response and a lower response suggesting dysfunction. Principle component analysis of selected T cell immunophenotypes also distinguished patients and controls for T cell phenotype and revealed a clustering of patients based on metastasis detected at diagnosis. Findings supported the overall hypothesis that canine melanoma patients display a T cell immunophenotype profile that is unique from healthy pet dogs and will guide future studies designed with larger patient cohorts necessary to further characterize prognostic T cell immunophenotypes.
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Affiliation(s)
- Ellen E Sparger
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Hong Chang
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Ning Chin
- California National Primate Research Center, Department of Medical Microbiology and Immunology, University of California, Davis, Davis, CA, United States
| | - Robert B Rebhun
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Sita S Withers
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, United States
| | - Hung Kieu
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Robert J Canter
- Surgical Oncology, School of Medicine, University of California, Davis, Sacramento, CA, United States
| | - Arta M Monjazeb
- Radiation Oncology, School of Medicine, University of California, Davis, Sacramento, CA, United States
| | - Michael S Kent
- Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
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10
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Razmara AM, Judge SJ, Gingrich AA, Cruz SM, Culp WTN, Kent MS, Rebhun RB, Canter RJ. Natural Killer and T Cell Infiltration in Canine Osteosarcoma: Clinical Implications and Translational Relevance. Front Vet Sci 2021; 8:771737. [PMID: 34869744 PMCID: PMC8635198 DOI: 10.3389/fvets.2021.771737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/08/2021] [Indexed: 11/29/2022] Open
Abstract
Metastatic osteosarcoma has a bleak prognosis in both humans and dogs, and there have been minimal therapeutic advances in recent decades to improve outcomes. Naturally occurring osteosarcoma in dogs is shown to be a highly suitable model for human osteosarcoma, and limited data suggest the similarities between species extend into immune responses to cancer. Studies show that immune infiltrates in canine osteosarcoma resemble those of human osteosarcoma, and the analysis of tumor immune constituents as predictors of therapeutic response is a promising direction for future research. Additionally, clinical studies in dogs have piloted the use of NK transfer to treat osteosarcoma and can serve as valuable precursors to clinical trials in humans. Cytotoxic lymphocytes in dogs and humans with osteosarcoma have increased activation and exhaustion markers within tumors compared with blood. Accordingly, NK and T cells have complex interactions among cancer cells and other immune cells, which can lead to changes in pathways that work both for and against the tumor. Studies focused on NK and T cell interactions within the tumor microenvironment can open the door to targeted therapies, such as checkpoint inhibitors. Specifically, PD-1/PD-L1 checkpoint expression is conserved across tumors in both species, but further characterization of PD-L1 in canine osteosarcoma is needed to assess its prognostic significance compared with humans. Ultimately, a comparative understanding of T and NK cells in the osteosarcoma tumor microenvironment in both dogs and humans can be a platform for translational studies that improve outcomes in both dogs and humans with this frequently aggressive disease.
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Affiliation(s)
- Aryana M Razmara
- Department of Surgery, School of Medicine, University of California, Davis, Davis, CA, United States
| | - Sean J Judge
- Department of Surgery, School of Medicine, University of California, Davis, Davis, CA, United States
| | - Alicia A Gingrich
- Department of Surgery, School of Medicine, University of California, Davis, Davis, CA, United States
| | - Sylvia M Cruz
- Department of Surgery, School of Medicine, University of California, Davis, Davis, CA, United States
| | - William T N Culp
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Michael S Kent
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Robert B Rebhun
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Robert J Canter
- Department of Surgery, School of Medicine, University of California, Davis, Davis, CA, United States
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11
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Gingrich AA, Reiter TE, Judge SJ, York D, Yanagisawa M, Razmara A, Sturgill I, Basmaci UN, Brady RV, Stoffel K, Murphy WJ, Rebhun RB, Brown CT, Canter RJ. Comparative Immunogenomics of Canine Natural Killer Cells as Immunotherapy Target. Front Immunol 2021; 12:670309. [PMID: 34594320 PMCID: PMC8476892 DOI: 10.3389/fimmu.2021.670309] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 08/26/2021] [Indexed: 12/11/2022] Open
Abstract
Natural killer (NK) cells are key effectors of the innate immune system, but major differences between human and murine NK cells have impeded translation. Outbred dogs offer an important link for studies of NK biology and immunotherapy. We analyzed gene expression of putative NK populations from healthy dogs and dogs with naturally-occurring cancers examining differential gene expression across multiple conditions, including steady-state, in vitro activation with cytokines and co-culture, and in vivo activation with inhaled IL-15 in dogs receiving IL-15 immunotherapy. We also compared dog, mouse and human CD3-NKp46+ NK cells using a novel orthologous transcriptome. Distinct transcriptional profiles between NK populations exist between conditions and in vitro versus in vivo treatments. In cross-species analysis, canine NK cells were globally more similar to human NK cells than mice. These data define canine NK cell gene expression under multiple conditions and across species, filling an important gap in translational NK studies.
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Affiliation(s)
- Alicia A. Gingrich
- Department of Surgery, University of California Davis, Sacramento, CA, United States
- Department of Population Health and Reproduction, University of California Davis, Davis, CA, United States
| | - Taylor E. Reiter
- Department of Population Health and Reproduction, University of California Davis, Davis, CA, United States
| | - Sean J. Judge
- Department of Surgery, University of California Davis, Sacramento, CA, United States
| | - Daniel York
- Department of Surgical and Radiological Sciences School of Veterinary Medicine, University of California Davis, Davis, CA, United States
| | - Mio Yanagisawa
- Department of Surgery, University of California Davis, Sacramento, CA, United States
| | - Aryana Razmara
- Department of Surgical and Radiological Sciences School of Veterinary Medicine, University of California Davis, Davis, CA, United States
| | - Ian Sturgill
- Department of Dermatology and Internal Medicine, University of California Davis, Sacramento, CA, United States
| | - Ugur Nur Basmaci
- Department of Surgery, University of California Davis, Sacramento, CA, United States
| | - Rachel V. Brady
- Department of Surgical and Radiological Sciences School of Veterinary Medicine, University of California Davis, Davis, CA, United States
| | - Kevin Stoffel
- Department of Dermatology and Internal Medicine, University of California Davis, Sacramento, CA, United States
| | - William J. Murphy
- Department of Dermatology and Internal Medicine, University of California Davis, Sacramento, CA, United States
| | - Robert B. Rebhun
- Department of Surgical and Radiological Sciences School of Veterinary Medicine, University of California Davis, Davis, CA, United States
| | - C. Titus Brown
- Department of Population Health and Reproduction, University of California Davis, Davis, CA, United States
| | - Robert J. Canter
- Department of Surgery, University of California Davis, Sacramento, CA, United States
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12
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Brill SA, Thamm DH. There and back again: Translating adoptive cell therapy to canine cancer and improving human treatment. Vet Comp Oncol 2021; 19:420-427. [PMID: 34169631 PMCID: PMC9310446 DOI: 10.1111/vco.12744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 05/29/2021] [Accepted: 05/31/2021] [Indexed: 11/26/2022]
Abstract
Adoptive cell transfer (ACT) is a burgeoning therapeutic modality within human immuno-oncology. Novel approaches towards ACT are being developed in the pre-clinical setting faster than they can be evaluated in human clinical trials. Many of the therapeutic approaches used in human medicine have already been evaluated to some degree in canine patients. While this form of immunotherapy in veterinary medicine is still in its infancy, as these approaches develop, canine ACT will become a tool for both the veterinary oncologist and the translational researcher. This review details canine ACT trials to date, with attention given to the precedents provided by human oncology.
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Affiliation(s)
- Samuel A Brill
- Flint Animal Cancer Center, Colorado State University, Fort Collins, Colorado, USA.,Cell and Molecular Biology Graduate Program, Colorado State University, Fort Collins, Colorado, USA
| | - Douglas H Thamm
- Flint Animal Cancer Center, Colorado State University, Fort Collins, Colorado, USA.,Cell and Molecular Biology Graduate Program, Colorado State University, Fort Collins, Colorado, USA.,Developmental Therapeutics Program, University of Colorado Comprehensive Cancer Center, Fort Collins, Colorado, USA
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13
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Kisseberth WC, Lee DA. Adoptive Natural Killer Cell Immunotherapy for Canine Osteosarcoma. Front Vet Sci 2021; 8:672361. [PMID: 34164452 PMCID: PMC8215197 DOI: 10.3389/fvets.2021.672361] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/05/2021] [Indexed: 12/11/2022] Open
Abstract
Osteosarcoma is the most common primary bone tumor in both humans and dogs. It is a highly metastatic cancer and therapy has not improved significantly since the inclusion of adjuvant chemotherapy into disease treatment strategies. Osteosarcoma is an immunogenic tumor, and thus development of immunotherapies for its treatment, especially treatment of microscopic pulmonary metastases might improve outcomes. NK cells are lymphocytes of the innate immune system and can recognize a variety of stressed cells, including cancer cells, in the absence of major histocompatibility complex (MHC)-restricted receptor ligand interactions. NK cells have a role in controlling tumor progression and metastasis and are important mediators of different therapeutic interventions. The core hypothesis of adoptive natural killer (NK) cell therapy is there exists a natural defect in innate immunity (a combination of cancer-induced reduction in NK cell numbers and immunosuppressive mechanisms resulting in suppressed function) that can be restored by adoptive transfer of NK cells. Here, we review the rationale for adoptive NK cell immunotherapy, NK cell biology, TGFβ and the immunosuppressive microenvironment in osteosarcoma, manufacturing of ex vivo expanded NK cells for the dog and provide perspective on the present and future clinical applications of adoptive NK cell immunotherapy in spontaneous osteosarcoma and other cancers in the dog.
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Affiliation(s)
- William C Kisseberth
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, OH, United States
| | - Dean A Lee
- Department of Pediatrics, Nationwide Children's Hospital and The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
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14
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Lee SH, Lim YJ, Kim CJ, Yu D, Lee JJ, Won Hong J, Baek YJ, Jung JY, Shin DJ, Kim SK. Safety and immunological effects of recombinant canine IL-15 in dogs. Cytokine 2021; 148:155599. [PMID: 34103211 DOI: 10.1016/j.cyto.2021.155599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/03/2021] [Accepted: 05/26/2021] [Indexed: 11/19/2022]
Abstract
Interleukin-15 (IL-15) is a pleiotropic cytokine that plays pivotal roles in innate and adaptive immunity. It is also a promising cytokine for treating cancer. Despite growing interest in its use as an immunotherapeutic, its safety and immunological effects in dogs have not been reported. In this study, healthy dogs were given recombinant canine IL-15 (rcIL-15) intravenously at a daily dose of 20 μg/kg for 8 days and monitored for 32 days to determine the safety and immunological effects of rcIL-15. The repeated administration of rcIL-15 was well tolerated, did not cause any serious side effects, and promoted the selective proliferation and activation of canine anti-cancer effector cells, including CD3+CD8+ cytotoxic T lymphocytes, CD3+CD5dimCD21-, and non-B/non-T NK cell populations, without stimulating Treg lymphocytes. The rcIL-15 injections also stimulated the expression of molecules and transcription factors associated with the activation and effector functions of NK cells, including CD16, NKG2D, NKp30, NKp44, NKp46, perforin, granzyme B, Ly49, T-bet, and Eomes. These results suggest that rcIL-15 might be a valuable therapeutic adjuvant to improve immunity against cancer in dogs.
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Affiliation(s)
- Soo-Hyeon Lee
- Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Yu-Jin Lim
- Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Cheol-Jung Kim
- Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Dohyeon Yu
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Je-Jung Lee
- Department of Hemotology-Oncology, Chonnam National Univresity Hwasun Hospital, Hwasun, Jeollanamdo, Republic of Korea
| | - Jeong Won Hong
- Research Institute for Natural Products, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Yeon-Ju Baek
- Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Ji-Youn Jung
- Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, Chungnam, Republic of Korea; Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, Republic of Korea; Research Institute for Natural Products, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Dong-Jun Shin
- Research Institute for Natural Products, Kongju National University, Yesan-gun, Chungnam, Republic of Korea; SD Medic Co, Gwangju, Republic of Korea.
| | - Sang-Ki Kim
- Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, Chungnam, Republic of Korea; Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, Republic of Korea; Research Institute for Natural Products, Kongju National University, Yesan-gun, Chungnam, Republic of Korea.
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15
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Kim CJ, Park SC, Lee SH, Lim YJ, Yoon M, Park JG, Baek YB, Cho KO, Hong JW, Shin DJ, Kim SK. Safety analysis of ex vivo-expanded canine natural killer cells in a xenogeneic mouse model of graft-versus-host disease. J Leukoc Biol 2021; 111:439-450. [PMID: 33884654 DOI: 10.1002/jlb.5a1019-501rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Canine natural killer (NK) cells are large, granular lymphocytes that are neither B lymphocytes nor T lymphocytes. However, it has been reported that canine NK cells share some of the phenotypic characteristics of T lymphocytes, such as CD3 and CD5. Studies are needed to assess the safety of canine NK cells for immunotherapy, especially because the safety of using allogeneic NK cells as an immunotherapy for dogs has yet to be shown. In this study, the safety of cultured canine NK cells was assessed using a xenogeneic mouse model of graft-versus-host disease (GVHD). Mice were injected with either canine peripheral blood mononuclear cells (PBMCs) or cultured NK cells for 2 or 3 weeks. Data were then collected on changes in mice body weights, disease severity scores, and survival rates. Histopathological and immunohistochemical evaluations were also performed. All mice injected with canine PBMCs died within 45 days after injection. Severe clinical signs were caused by GVHD. The histopathological and immunohistochemical evaluations showed that mice injected with canine PBMCs had multiple lesions, including necrosis in their lungs, livers, kidneys, and stomachs, and the injected cells were present around the lesions. By contrast, no mice injected with cultured NK cells without removing the CD3+ TCR- cells exhibited any clinical abnormalities. Moreover, they all survived the 90-day experimental period without exhibiting any histopathological changes. Accordingly, the results of this study suggest that canine NK cells do not cause significant side effects such as GVHD and allogeneic NK cells can safely be used for cancer immunotherapy in dogs.
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Affiliation(s)
- Cheol-Jung Kim
- Department of Laboratory and Companion Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Se-Cheol Park
- Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, Chungnam, Republic of Korea.,Korea Testing & Research Institute, Hwasun, Jeollanamdo, Republic of Korea
| | - Soo-Hyeon Lee
- Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Yu-Jin Lim
- Department of Laboratory and Companion Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Meesun Yoon
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jun-Gyu Park
- Laboratory of Veterinary Pathology, College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Yeong-Bin Baek
- Laboratory of Veterinary Pathology, College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Kyoung-Oh Cho
- Laboratory of Veterinary Pathology, College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Jeong Won Hong
- Research Institute for Natural Products, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Dong-Jun Shin
- Research Institute for Natural Products, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
| | - Sang-Ki Kim
- Department of Laboratory and Companion Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, Republic of Korea.,Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, Chungnam, Republic of Korea.,Research Institute for Natural Products, Kongju National University, Yesan-gun, Chungnam, Republic of Korea
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16
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Pantelyushin S, Ranninger E, Guerrera D, Hutter G, Maake C, Markkanen E, Bettschart-Wolfensberger R, Rohrer Bley C, Läubli H, vom Berg J. Cross-Reactivity and Functionality of Approved Human Immune Checkpoint Blockers in Dogs. Cancers (Basel) 2021; 13:785. [PMID: 33668625 PMCID: PMC7918463 DOI: 10.3390/cancers13040785] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/05/2021] [Accepted: 02/10/2021] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Rodent cancer models have limitations in predicting efficacy, tolerability and accompanying biomarkers of ICIs in humans. Companion dogs suffering from neoplastic diseases have gained attention as a highly relevant translational disease model. Despite successful reports of PD-1/PD-L1 blockade in dogs, no compounds are available for veterinary medicine. METHODS Here, we assessed suitability of seven FDA-approved human ICIs to target CTLA-4 or PD-1/PD-L1 in dogs. Cross-reactivity and blocking potential was assessed using ELISA and flow cytometry. Functional responses were assessed on peripheral blood mononuclear cells (PBMCs) derived from healthy donors (n = 12) and cancer patient dogs (n = 27) as cytokine production after stimulation. Immune composition and target expression of healthy donors and cancer patients was assessed via flow cytometry. RESULTS Four candidates showed cross-reactivity and two blocked the interaction of canine PD-1 and PD-L1. Of those, only atezolizumab significantly increased cytokine production of healthy and patient derived PBMCs in vitro. Especially lymphoma patient PBMCs responded with increased cytokine production. In other types of cancer, response to atezolizumab appeared to correlate with a lower frequency of CD8 T cells. CONCLUSIONS Cross-functionality of atezolizumab encourages reverse translational efforts using (combination) immunotherapies in companion dog tumor patients to benefit both veterinary and human medicine.
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Affiliation(s)
- Stanislav Pantelyushin
- Institute of Laboratory Animal Science, University of Zurich, CH-8952 Schlieren, Switzerland; (S.P.); (D.G.)
- Institute of Anatomy, University of Zurich, CH-8057 Zurich, Switzerland;
| | - Elisabeth Ranninger
- Department of Clinical and Diagnostic Services, Section of Anesthesiology, Vetsuisse Faculty, University of Zurich, CH-8057 Zurich, Switzerland; (E.R.); (R.B.-W.)
| | - Diego Guerrera
- Institute of Laboratory Animal Science, University of Zurich, CH-8952 Schlieren, Switzerland; (S.P.); (D.G.)
| | - Gregor Hutter
- Department of Biomedicine, University of Basel, CH-4031 Basel, Switzerland; (G.H.); (H.L.)
- Department of Neurosurgery, University Hospital Basel, CH-4031 Basel, Switzerland
| | - Caroline Maake
- Institute of Anatomy, University of Zurich, CH-8057 Zurich, Switzerland;
| | - Enni Markkanen
- Institute of Veterinary Pharmacology and Toxicology, Vetsuisse Faculty, University of Zurich, CH-8057 Zurich, Switzerland;
| | - Regula Bettschart-Wolfensberger
- Department of Clinical and Diagnostic Services, Section of Anesthesiology, Vetsuisse Faculty, University of Zurich, CH-8057 Zurich, Switzerland; (E.R.); (R.B.-W.)
| | - Carla Rohrer Bley
- Division of Radiation Oncology, Vetsuisse Faculty, University of Zurich, CH-8057 Zurich, Switzerland;
| | - Heinz Läubli
- Department of Biomedicine, University of Basel, CH-4031 Basel, Switzerland; (G.H.); (H.L.)
- Division of Medical Oncology, University Hospital Basel, CH-4031 Basel, Switzerland
| | - Johannes vom Berg
- Institute of Laboratory Animal Science, University of Zurich, CH-8952 Schlieren, Switzerland; (S.P.); (D.G.)
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17
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Mason NJ. Comparative Immunology and Immunotherapy of Canine Osteosarcoma. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1258:199-221. [PMID: 32767244 DOI: 10.1007/978-3-030-43085-6_14] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Approximately 800 people are diagnosed with osteosarcoma (OSA) per year in the USA. Although 70% of patients with localized OSA are cured with multiagent chemotherapy and surgical resection, the prognosis for patients with metastatic or relapsed disease is guarded. The small number of patients diagnosed annually contributes to an incomplete understanding of disease pathogenesis, and challenges in performing appropriately powered clinical trials and detecting correlative biomarkers of response. While mouse models of OSA are becoming increasingly sophisticated, they generally fail to accurately recapitulate tumor heterogeneity, tumor microenvironment (TME), systemic immune dysfunction, and the clinical features of tumor recurrence, metastases, and chemoresistance, which influence outcome. Pet dogs spontaneously develop OSA with an incidence that is 30-50 times higher than humans. Canine OSA parallels the human disease in its clinical presentation, biological behavior, genetic complexity, and therapeutic management. However, despite therapy, most dogs die from metastatic disease within 1 year of diagnosis. Since OSA occurs in immune-competent dogs, immune factors that sculpt tumor immunogenicity and influence responses to immune modulation are in effect. In both species, immune modulation has shown beneficial effects on patient outcome and work is now underway to identify the most effective immunotherapies, combination of immunotherapies, and correlative biomarkers that will further improve clinical response. In this chapter, the immune landscape of canine OSA and the immunotherapeutic strategies used to modulate antitumor immunity in dogs with the disease will be reviewed. From this immunological viewpoint, the value of employing dogs with spontaneous OSA to accelerate and inform the translation of immunotherapies into the human clinic will be underscored.
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Affiliation(s)
- Nicola J Mason
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA. .,Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA. .,Parker Institute for Cancer Immunotherapy, University of Pennsylvania, Philadelphia, PA, USA.
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18
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CD94 Ex Vivo Cultures in a Bone Marrow Transplantation Setting. Transplant Direct 2020; 6:e632. [PMID: 33225057 PMCID: PMC7673772 DOI: 10.1097/txd.0000000000001082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/09/2020] [Accepted: 09/23/2020] [Indexed: 11/27/2022] Open
Abstract
Background Complementary, marrow donor-derived peripheral blood T-lymphocyte infusions enable consistent hematopoietic engraftment in lethally irradiated dog leukocyte antigen (DLA)-haploidentical littermate recipients, but at the cost of severe graft versus host disease (GVHD). Here, we explored whether CD94-selected and in vitro-expanded natural killer (NK) cells could be substituted for T-lymphocytes for enhancing marrow engraftment without causing severe GVHD. Methods Five dogs were conditioned with 700 cGy total body irradiation followed by infusion of DLA-haploidentical donor marrow and CD94-selected, in vitro-expanded NK cells. NK cells were infused at a median of 140 000 (range 78 000-317 000) cells/kg. Results Four dogs rejected their marrow grafts, whereas 1 dog fully engrafted and developed GVHD. We observed an increase in peripheral blood NK cells after infusion of CD94-selected, ex vivo-expanded NK in 2 dogs. Peripheral blood lymphocyte counts peaked at day 7 or 8 posttransplant in the 4 rejecting dogs, whereas in the fully engrafted dog, lymphocyte counts remained stable at suboptimal levels. Conclusions Our study indicates NK cells can be expanded in vitro and safely infused into DLA-haploidentical recipients. Within the range of CD94-selected and expanded cells infused we concluded that they failed to both uniformly promote engraftment and avert GVHD.
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19
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Pantelyushin S, Ranninger E, Bettschart-Wolfensberger R, Vom Berg J. OMIP-065: Dog Immunophenotyping and T-Cell Activity Evaluation with a 14-Color Panel. Cytometry A 2020; 97:1024-1027. [PMID: 32583607 DOI: 10.1002/cyto.a.24168] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 05/19/2020] [Accepted: 05/30/2020] [Indexed: 11/11/2022]
Abstract
Companion dogs are increasingly recognized as large-animal models of diseases such as cancer, infectious-, inflammatory-, or autoimmune diseases. At the same time, compared to human clinics, veterinarians have only a fraction of the treatment options available. To study the immunological aspects of canine diseases and ultimately develop or adapt human treatments for the dog, the methodology also needs to be in place. Such tools include robust and reliable flow cytometric panels. The purpose of the panel described here is to assess the immune cell composition and their functionality in the peripheral blood mononuclear cells (PBMCs) of dogs. Moreover, its "plug and play" composition allows for an in-depth analysis of T-cell responses in ex vivo assays (Table 1). Initially, this panel has been designed for the analysis of cryopreserved PBMCs to allow batched analysis and to reduce interexperimental variation. Withers and colleagues published a comparable and-to our knowledge-currently the most extensive canine panel to date (1). While their study focused on the aging and activation status of T cells in dogs, our panel is designed to look at a broader range of cells with a higher number of markers. This allows a more in-depth analysis of functional extracellular and intracellular markers. In addition, all antibodies in our proposed panel are directly labeled. In combination with suitable lymphocyte isolation protocols, this panel could potentially also be adapted to analyze tissue biopsies from various different organs. © 2020 International Society for Advancement of Cytometry.
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Affiliation(s)
| | - Elisabeth Ranninger
- Anaesthesiology Section, Vetsuisse Faculty, University of Zürich, Zurich, Switzerland
| | | | - Johannes Vom Berg
- Institute of Laboratory Animal Science, University of Zurich, Schlieren, Switzerland
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20
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Graves SS, Storb R. Developments and translational relevance for the canine haematopoietic cell transplantation preclinical model. Vet Comp Oncol 2020; 18:471-483. [PMID: 32385957 DOI: 10.1111/vco.12608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/01/2020] [Accepted: 05/04/2020] [Indexed: 12/13/2022]
Abstract
The development of safe and reliable haematopoietic cell transplantation (HCT) protocols to treat human patients with malignant and non-malignant blood disorders was highly influenced by preclinical studies obtained in random-bred canines. The surmounted barriers included recognizing the crucial importance of histocompatibility matching, establishing long-term donor haematopoietic cell engraftment, preventing graft-vs-host disease and advancing effective conditioning and post-grafting immunosuppression protocols, all of which were evaluated in canines. Recent studies have applied the tolerance inducing potential of HCT to solid organ and vascularized composite tissue transplantation. Several advances in HCT and tolerance induction that were first developed in the canine preclinical model and subsequently applied to human patients are now being recruited into veterinary practice for the treatment of malignant and non-malignant disorders in companion dogs. Here, we review recent HCT advancements attained in the canine model during the past 15 years.
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Affiliation(s)
- Scott S Graves
- Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Rainer Storb
- Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,University of Washington School of Medicine, Seattle, Washington, USA
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21
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Judge SJ, Yanagisawa M, Sturgill IR, Bateni SB, Gingrich AA, Foltz JA, Lee DA, Modiano JF, Monjazeb AM, Culp WTN, Rebhun RB, Murphy WJ, Kent MS, Canter RJ. Blood and tissue biomarker analysis in dogs with osteosarcoma treated with palliative radiation and intra-tumoral autologous natural killer cell transfer. PLoS One 2020; 15:e0224775. [PMID: 32084139 PMCID: PMC7034869 DOI: 10.1371/journal.pone.0224775] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/04/2020] [Indexed: 01/01/2023] Open
Abstract
We have previously reported radiation-induced sensitization of canine osteosarcoma (OSA) to natural killer (NK) therapy, including results from a first-in-dog clinical trial. Here, we report correlative analyses of blood and tissue specimens for signals of immune activation in trial subjects. Among 10 dogs treated with palliative radiotherapy (RT) and intra-tumoral adoptive NK transfer, we performed ELISA on serum cytokines, flow cytometry for immune phenotype of PBMCs, and PCR on tumor tissue for immune-related gene expression. We then queried The Cancer Genome Atlas (TCGA) to evaluate the association of cytotoxic/immune-related gene expression with human sarcoma survival. Updated survival analysis revealed five 6-month survivors, including one dog who lived 17.9 months. Using feeder line co-culture for NK expansion, we observed maximal activation of dog NK cells on day 17-19 post isolation with near 100% expression of granzyme B and NKp46 and high cytotoxic function in the injected NK product. Among dogs on trial, we observed a trend for higher baseline serum IL-6 to predict worse lung metastasis-free and overall survival (P = 0.08). PCR analysis revealed low absolute gene expression of CD3, CD8, and NKG2D in untreated OSA. Among treated dogs, there was marked heterogeneity in the expression of immune-related genes pre- and post-treatment, but increases in CD3 and CD8 gene expression were higher among dogs that lived > 6 months compared to those who did not. Analysis of the TCGA confirmed significant differences in survival among human sarcoma patients with high and low expression of genes associated with greater immune activation and cytotoxicity (CD3e, CD8a, IFN-γ, perforin, and CD122/IL-2 receptor beta). Updated results from a first-in-dog clinical trial of palliative RT and autologous NK cell immunotherapy for OSA illustrate the translational relevance of companion dogs for novel cancer therapies. Similar to human studies, analyses of immune markers from canine serum, PBMCs, and tumor tissue are feasible and provide insight into potential biomarkers of response and resistance.
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Affiliation(s)
- Sean J. Judge
- Department of Surgery, University of California Davis Medical Center, Sacramento, California, United States of America
| | - Mio Yanagisawa
- Department of Surgery, University of California Davis Medical Center, Sacramento, California, United States of America
| | - Ian R. Sturgill
- Department of Surgery, University of California Davis Medical Center, Sacramento, California, United States of America
| | - Sarah B. Bateni
- Department of Surgery, University of California Davis Medical Center, Sacramento, California, United States of America
| | - Alicia A. Gingrich
- Department of Surgery, University of California Davis Medical Center, Sacramento, California, United States of America
| | - Jennifer A. Foltz
- Nationwide Children’s Hospital, Center for Childhood Cancer & Blood Diseases, Columbus, Ohio, United States of America
| | - Dean A. Lee
- Nationwide Children’s Hospital, Center for Childhood Cancer & Blood Diseases, Columbus, Ohio, United States of America
| | - Jaime F. Modiano
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Animal Cancer Care and Research Center, Center for Immunology, Masonic Cancer Center, and Stem Cell Institute, University of Minnesota, St. Paul, Minneapolis, United States of America
| | - Arta M. Monjazeb
- Department of Radiation Oncology, University of California Davis Medical Center, Sacramento, California, United States of America
| | - William T. N. Culp
- The Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America
| | - Robert B. Rebhun
- The Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America
| | - William J. Murphy
- Distinguished Professor of Dermatology and Internal Medicine, Vice Chair of Dermatology, University of California Davis Medical Center, Sacramento, California, United States of America
| | - Michael S. Kent
- The Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America
| | - Robert J. Canter
- Department of Surgery, Division of Surgical Oncology, University of California Davis Medical Center, Sacramento, California, United States of America
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22
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Dow S. A Role for Dogs in Advancing Cancer Immunotherapy Research. Front Immunol 2020; 10:2935. [PMID: 32010120 PMCID: PMC6979257 DOI: 10.3389/fimmu.2019.02935] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 11/29/2019] [Indexed: 12/27/2022] Open
Abstract
While rodent cancer models are essential for early proof-of-concept and mechanistic studies for immune therapies, these models have limitations with regards to predicting the ultimate effectiveness of new immunotherapies in humans. As a unique spontaneous, large animal model of cancer, the value of conducting studies in pet dogs with cancer has been increasingly recognized by the research community. This review will therefore summarize key aspects of the dog cancer immunotherapy model and the role that these studies may play in the overall immunotherapy drug research effort. We will focus on cancer types and settings in which the dog model is most likely to impact clinical immuno-oncology research and drug development. Immunological reagent availability is discussed, along with some unique opportunities and challenges associated with the dog immunotherapy model. Overall it is hoped that this review will increase awareness of the dog cancer immunotherapy model and stimulate additional collaborative studies to benefit both man and man's best friend.
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Affiliation(s)
- Steven Dow
- Flint Animal Cancer Center, Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
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23
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Trikha P, Lee DA. The role of AhR in transcriptional regulation of immune cell development and function. Biochim Biophys Acta Rev Cancer 2019; 1873:188335. [PMID: 31816350 DOI: 10.1016/j.bbcan.2019.188335] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 12/02/2019] [Accepted: 12/02/2019] [Indexed: 12/13/2022]
Abstract
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcriptional factor (TF) that is a member of the Per-Arnt-Sim family of proteins. AhR regulates diverse processes, including malignant transformation, hematopoietic cell development, and fate determination of immune cell lineages. Moreover, AhR forms a crucial link between innate and adaptive arms of the immune system. Malignant cells frequently evolve multiple mechanisms for suppressing tumor-specific responses, including the induction of suppressive pathways involving AhR and its metabolic byproducts in the tumor microenvironment that promote immune evasion and tumor progression. Thus, interest is high in further defining the role of AhR in carcinogenesis and immune development and regulation, particularly regarding the therapeutic interventions that unleash immune responses to cancer cells. Here, we provide an overview of the role of AhR in the regulation of innate and adaptive immune response and discuss the implications of targeting this pathway to augment the immune response in cancer patients.
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Affiliation(s)
- Prashant Trikha
- Cellular Therapy & Cancer Immunotherapy Program, Center for Childhood Cancer & Blood Diseases, WA-4112 Abigail Wexner Research Institute, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH 43205, United States of America.
| | - Dean A Lee
- Cellular Therapy & Cancer Immunotherapy Program, Center for Childhood Cancer & Blood Diseases, WA-4112 Abigail Wexner Research Institute, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH 43205, United States of America
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24
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Gingrich AA, Modiano JF, Canter RJ. Characterization and Potential Applications of Dog Natural Killer Cells in Cancer Immunotherapy. J Clin Med 2019; 8:jcm8111802. [PMID: 31717876 PMCID: PMC6912828 DOI: 10.3390/jcm8111802] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/16/2019] [Accepted: 10/24/2019] [Indexed: 12/22/2022] Open
Abstract
Natural killer (NK) cells of the innate immune system are a key focus of research within the field of immuno-oncology based on their ability to recognize and eliminate malignant cells without prior sensitization or priming. However, barriers have arisen in the effective translation of NK cells to the clinic, in part because of critical species differences between mice and humans. Companion animals, especially dogs, are valuable species for overcoming many of these barriers, as dogs develop spontaneous tumors in the setting of an intact immune system, and the genetic and epigenetic factors that underlie oncogenesis appear to be similar between dogs and humans. Here, we summarize the current state of knowledge for dog NK cells, including cell surface marker phenotype, key NK genes and genetic regulation, similarities and differences of dog NK cells to other mammals, especially human and mouse, expression of canonical inhibitory and activating receptors, ex vivo expansion techniques, and current and future clinical applications. While dog NK cells are not as well described as those in humans and mice, the knowledge of the field is increasing and clinical applications in dogs can potentially advance the field of human NK biology and therapy. Better characterization is needed to truly understand the similarities and differences of dog NK cells with mouse and human. This will allow for the canine model to speed clinical translation of NK immunotherapy studies and overcome key barriers in the optimization of NK cancer immunotherapy, including trafficking, longevity, and maximal in vivo support.
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Affiliation(s)
- Alicia A. Gingrich
- Department of Surgery, University of California Davis, 2221 Stockton Blvd, Sacramento, CA 95817, USA;
| | - Jaime F. Modiano
- Animal Cancer Care and Research Program, College of Veterinary Medicine and Masonic Cancer Center, University of Minnesota, 1365 Gortner Ave, St. Paul, MN 55108, USA;
| | - Robert J. Canter
- Department of Surgery, University of California Davis, 2221 Stockton Blvd, Sacramento, CA 95817, USA;
- Correspondence:
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25
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Kim Y, Lee SH, Kim CJ, Lee JJ, Yu D, Ahn S, Shin DJ, Kim SK. Canine non-B, non-T NK lymphocytes have a potential antibody-dependent cellular cytotoxicity function against antibody-coated tumor cells. BMC Vet Res 2019; 15:339. [PMID: 31610784 PMCID: PMC6790994 DOI: 10.1186/s12917-019-2068-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 08/29/2019] [Indexed: 02/08/2023] Open
Abstract
Background The antibody-dependent cellular cytotoxicity (ADCC) is a cell-mediated immune defense mechanism in which effector immune cells actively lyse antibody-coated target cells. The ADCC of tumor cells is employed in the treatment of various cancers overexpressing unique antigens, and only natural killer (NK) cells are known to be major effectors of antibody mediated ADCC activity. Canine NK cells are still defined as non-B, non-T large granular lymphocytes because of the lack of information regarding the NK cell-restricted specific marker in dogs, and it has never been demonstrated that canine NK cells have ADCC ability against tumor cells. In the present study, we investigated whether canine non-B, non-T NK cells have ADCC ability against target antibody-coated tumor cells, using cetuximab and trastuzumab, the only human antibodies reported binding to canine cancer cells. Results Activated canine non-B, non-T NK cells (CD3−CD21−CD5−TCRαβ−TCRγδ−) for 13~17 days ex vivo showed ADCC ability against trastuzumab- or cetuximab-coated target tumor cells expressing various levels of human epidermal growth factor receptor 2 (HER-2) and epidermal growth factor receptor (EGFR). Trastuzumab and cetuximab induced significant ADCC responses of canine NK cells even in CMT-U334 and CF41.Mg cells expressing low levels of HER-2 and/or EGFR, as well as in SKBR3 and DU145 cells overexpressing HER-2 and/or EGFR. The trastuzumab-mediated ADCC activity of NK cells was significantly enhanced by treatment with rcIL-21. Conclusions The results of this study suggest that canine non-B, non-T NK lymphocytes have a potential ADCC function and that combinational strategies of monoclonal antibodies with either cytokines, which activate NK cells in vivo, or adoptive transfer of NK cells may be a feasible method for amplifying the efficacy of immunotherapy against malignant cancers even with very low expression of target molecules in dogs. Electronic supplementary material The online version of this article (10.1186/s12917-019-2068-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yoseop Kim
- Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, 32439, Republic of Korea.,Present Address: Research Institute, Vaxcell-Bio Therapeutics, Hwasun, Jellanamdo, Republic of Korea
| | - Soo-Hyeon Lee
- Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, Chungnam, Republic of Korea.,Present Address: CHABiolab Co.,Ltd, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Cheol-Jung Kim
- Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, 32439, Republic of Korea
| | - Je-Jung Lee
- Department of Hemotology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Jeollanamdo, Republic of Korea
| | - Dohyeon Yu
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Soomin Ahn
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Dong-Jun Shin
- Research Institute for Natural Products, Kongju National University, Yesan-gun, Chungnam, 32439, Republic of Korea.
| | - Sang-Ki Kim
- Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, Chungnam, 32439, Republic of Korea. .,Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, Chungnam, Republic of Korea. .,Research Institute for Natural Products, Kongju National University, Yesan-gun, Chungnam, 32439, Republic of Korea.
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26
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Lee DA. Cellular therapy: Adoptive immunotherapy with expanded natural killer cells. Immunol Rev 2019; 290:85-99. [DOI: 10.1111/imr.12793] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 06/27/2019] [Accepted: 06/29/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Dean A. Lee
- Department of Hematology, Oncology, and Bone Marrow Transplantation Nationwide Children's Hospital Columbus Ohio
- Department of Pediatrics The Ohio State University Columbus Ohio
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27
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Goyos A, Fort M, Sharma A, Lebrec H. Current Concepts in Natural Killer Cell Biology and Application to Drug Safety Assessments. Toxicol Sci 2019; 170:10-19. [PMID: 31020324 DOI: 10.1093/toxsci/kfz098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Natural killer (NK) cells are lymphocytes capable of cytotoxicity against virally infected cells and tumor cells. The display of effector function by NK cells is the result of interactions between germline encoded activating/inhibitory NK cell receptors and their ligands (major histocompatibility complex class I, major histocompatibility complex class I-like, viral, and cellular stress-related surface molecules) expressed on target cells. Determination of NK cell number and function is a common element of the immunotoxicology assessment paradigm for the development of certain classes of pharmaceuticals across a range of modalities. This article summarizes the evidence associating NK cell dysfunction with infectious and cancer risks, reviews emerging NK cell biology, including the impact of immunogenetics on NK cell education and function, and provides perspectives about points to consider when assessing NK cell function in different species in the context of safety assessment.
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Affiliation(s)
- Ana Goyos
- Amgen Research, Inc, South San Francisco, California 94080
| | - Madeline Fort
- Amgen Research, Inc, South San Francisco, California 94080
| | - Amy Sharma
- Genentech, Inc, South San Francisco, California 94080
| | - Herve Lebrec
- Amgen Research, Inc, South San Francisco, California 94080
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28
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Graves SS, Gyurkocza B, Stone DM, Parker MH, Abrams K, Jochum C, Gallo S, Saad M, Johnson MM, Rosinski SL, Storb R. Development and characterization of a canine-specific anti-CD94 (KLRD-1) monoclonal antibody. Vet Immunol Immunopathol 2019; 211:10-18. [PMID: 31084888 DOI: 10.1016/j.vetimm.2019.03.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 01/31/2019] [Accepted: 03/14/2019] [Indexed: 12/29/2022]
Abstract
Natural killer (NK) cells are non-T, non-B lymphocytes are part of the innate immune system and function without prior activation. The human NK cell surface determinant, CD94, plays a critical role in regulation of NK cell activity as a heterodimer with NKG2 subclasses. Canine NK cells are not as well defined as the human and murine equivalents, due in part to the paucity of reagents specific to cell surface markers. Canines possess NK/NKT cells that have similar morphological characteristics to those found in humans, yet little is known about their functional characteristics nor of cell surface expression of CD94. Here, we describe the development and function of a monoclonal antibody (mAb) to canine (ca) CD94. Freshly isolated canine CD94+ cells were CD3+/-, CD8+/-, CD4-, CD21-, CD5low, NKp46+, and were cytotoxic against a canine target cell line. Anti-caCD94 mAb proved useful in enriching NK/NKT cells from PBMC for expansion on CTAC feeder cells in the presence of IL-2 and IL-15. The cultured cells were highly cytolytic with co-expression of NKp46 and reduced expression of CD3. Transmission electron microscopy revealed expanded CD94+ lymphocytes were morphologically large granular lymphocytes with large electron dense granules. Anti-caCD94 (mAb) can serve to enrich NK/NKT cells from dog peripheral blood for ex vivo expansion for HCT and is a potentially valuable reagent for studying NK/NKT regulation in the dog.
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Affiliation(s)
- Scott S Graves
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, United States
| | - Boglarka Gyurkocza
- Department of Hematology, Memorial Sloan-Kettering Cancer Center, New York, NY, 10065, United States
| | - Diane M Stone
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, United States
| | - Maura H Parker
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, United States
| | - Kraig Abrams
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, United States
| | - Christoph Jochum
- Clinic of Internal Medicine and Gastroenterology, University Medicine Essen St-Josef Hospital, Werden, Essen, Germany
| | - Susanna Gallo
- Medical Oncology, Turin Metropolitan Transplantation Center, Candiolo Cancer Institute-FPO IRCCS, Candiolo, Italy
| | - Marium Saad
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, United States
| | - Melissa M Johnson
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, United States
| | - Steven L Rosinski
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, United States
| | - Rainer Storb
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, United States; Department of Medicine, University of Washington, Seattle, WA, 981095, United States.
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29
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Cellular Immunotherapy of Canine Cancer. Vet Sci 2018; 5:vetsci5040100. [PMID: 30563208 PMCID: PMC6313932 DOI: 10.3390/vetsci5040100] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 11/11/2018] [Accepted: 11/30/2018] [Indexed: 12/26/2022] Open
Abstract
Infusions with immune cells, such as lymphocytes or natural killer (NK) cells, represent one of several modalities of immunotherapy. In human patients with advanced B-cell leukemia or lymphoma, infusions with chimeric antigen receptor (CAR) T-lymphocytes have shown promising responses. However, the scientific and clinical development of cell-based therapies for dogs, who get cancer of similar types as humans, is lagging behind. One reason is that immune cells and their functionality in dogs are less well characterized, largely due a lack of canine-specific reagents to detect surface markers, and specific cytokines to isolate and expand their immune cells. This review summarizes the current status of canine cancer immunotherapies, with focus on autologous and allogeneic T-lymphocytes, as well as NK cells, and discusses potential initiatives that would allow therapies with canine immune cells to “catch up” with the advances in humans.
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30
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Lee SH, Shin DJ, Kim Y, Kim CJ, Lee JJ, Yoon MS, Uong TNT, Yu D, Jung JY, Cho D, Jung BG, Kim SK, Suh GH. Comparison of Phenotypic and Functional Characteristics Between Canine Non-B, Non-T Natural Killer Lymphocytes and CD3 +CD5 dimCD21 - Cytotoxic Large Granular Lymphocytes. Front Immunol 2018; 9:841. [PMID: 29755462 PMCID: PMC5934500 DOI: 10.3389/fimmu.2018.00841] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 04/05/2018] [Indexed: 12/28/2022] Open
Abstract
Natural killer (NK) cells play a pivotal role in the immune response against infections and malignant transformation, and adopted transfer of NK cells is thought to be a promising therapeutic approach for cancer patients. Previous reports describing the phenotypic features of canine NK cells have produced inconsistent results. Canine NK cells are still defined as non-B and non-T (CD3−CD21−) large granular lymphocytes. However, a few reports have demonstrated that canine NK cells share the phenotypic characteristics of T lymphocytes, and that CD3+CD5dimCD21− lymphocytes are putative canine NK cells. Based on our previous reports, we hypothesized that phenotypic modulation could occur between these two populations during activation. In this study, we investigated the phenotypic and functional differences between CD3+CD5dimCD21− (cytotoxic large granular lymphocytes) and CD3−CD5−CD21− NK lymphocytes before and after culture of peripheral blood mononuclear cells isolated from normal dogs. The results of this study show that CD3+CD5dimCD21− lymphocytes can be differentiated into non-B, non-T NK (CD3−CD5−CD21−TCRαβ−TCRγδ−GranzymeB+) lymphocytes through phenotypic modulation in response to cytokine stimulation. In vitro studies of purified CD3+CD5dimCD21− cells showed that CD3−CD5−CD21− cells are derived from CD3+CD5dimCD21− cells through phenotypic modulation. CD3+CD5dimCD21− cells share more NK cell functional characteristics compared with CD3−CD5−CD21− cells, including the expression of T-box transcription factors (Eomes, T-bet), the production of granzyme B and interferon-γ, and the expression of NK cell-related molecular receptors such as NKG2D and NKp30. In conclusion, the results of this study suggest that CD3+CD5dimCD21− and CD3−CD5−CD21− cells both contain a subset of putative NK cells, and the difference between the two populations may be due to the degree of maturation.
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Affiliation(s)
- Soo-Hyeon Lee
- Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, South Korea.,Department of Laboratory and Companion Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, South Korea
| | - Dong-Jun Shin
- Department of Laboratory and Companion Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, South Korea.,Research Institute for Natural Products, Kongju National University, Yesan-gun, South Korea
| | - Yoseop Kim
- Department of Laboratory and Companion Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, South Korea
| | - Cheol-Jung Kim
- Department of Laboratory and Companion Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, South Korea
| | - Je-Jung Lee
- Department of Hemotology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Mee Sun Yoon
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Gwangju, South Korea
| | - Tung Nguyen Thanh Uong
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Gwangju, South Korea
| | - Dohyeon Yu
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Ji-Youn Jung
- Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, South Korea.,Department of Laboratory and Companion Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, South Korea.,Research Institute for Natural Products, Kongju National University, Yesan-gun, South Korea
| | - Duck Cho
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Bock-Gie Jung
- Department of Pulmonary Immunology, The University of Texas Health Science Center, Tyler, TX, United States
| | - Sang-Ki Kim
- Department of Integrated Life Science and Technology, Kongju National University, Yesan-gun, South Korea.,Department of Laboratory and Companion Animal Science, College of Industrial Science, Kongju National University, Yesan-gun, South Korea.,Research Institute for Natural Products, Kongju National University, Yesan-gun, South Korea
| | - Guk-Hyun Suh
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea
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31
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Klingemann H. Immunotherapy for Dogs: Running Behind Humans. Front Immunol 2018; 9:133. [PMID: 29459862 PMCID: PMC5807660 DOI: 10.3389/fimmu.2018.00133] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 01/16/2018] [Indexed: 12/31/2022] Open
Abstract
A number of excellent reviews on the potential of canine cancer immunotherapy are available, but many extrapolate from observations in humans when in fact only very few immunotherapies have been developed for canines that have shown efficacy in well-designed studies. Pharmaceutical and biotech companies are aware that the market for more expensive immunotherapies in canines is limited resulting in limited funding for clinical trials. However, dogs and other pets deserve access to this new form of cancer therapy. The purpose of this brief review is to summarize the current status of available immunotherapies for dogs and their near-term prospects, provided we can effectively translate discoveries and progress in humans to canines.
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Canter RJ, Grossenbacher SK, Foltz JA, Sturgill IR, Park JS, Luna JI, Kent MS, Culp WTN, Chen M, Modiano JF, Monjazeb AM, Lee DA, Murphy WJ. Radiotherapy enhances natural killer cell cytotoxicity and localization in pre-clinical canine sarcomas and first-in-dog clinical trial. J Immunother Cancer 2017; 5:98. [PMID: 29254507 PMCID: PMC5735903 DOI: 10.1186/s40425-017-0305-7] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 11/13/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND We have previously shown that radiotherapy (RT) augments natural killer (NK) functions in pre-clinical models of human and mouse cancers, including sarcomas. Since dogs are an excellent outbred model for immunotherapy studies, we sought to assess RT plus local autologous NK transfer in canine sarcomas. METHODS Dog NK cells (CD5dim, NKp46+) were isolated from PBMCs and expanded with irradiated K562-C9-mIL21 feeder cells and 100 IU/mL recombinant human IL-2. NK homing and cytotoxicity ± RT were evaluated using canine osteosarcoma tumor lines and dog patient-derived xenografts (PDX). In a first-in-dog clinical trial for spontaneous osteosarcoma, we evaluated RT and intra-tumoral autologous NK transfer. RESULTS After 14 days, mean NK expansion and yield were 19.0-fold (±8.6) and 258.9(±76.1) ×106 cells, respectively. Post-RT, NK cytotoxicity increased in a dose-dependent fashion in vitro reaching ~ 80% at effector:target ratios of ≥10:1 (P < 0.001). In dog PDX models, allogeneic NK cells were cytotoxic in ex vivo killing assays and produced significant PDX tumor growth delay (P < 0.01) in vivo. After focal RT and intravenous NK transfer, we also observed significantly increased NK homing to tumors in vivo. Of 10 dogs with spontaneous osteosarcoma treated with focal RT and autologous NK transfer, 5 remain metastasis-free at the 6-month primary endpoint with resolution of suspicious pulmonary nodules in one patient. We also observed increased activation of circulating NK cells after treatment and persistence of labelled NK cells in vivo. CONCLUSIONS NK cell homing and cytotoxicity are increased following RT in canine models of sarcoma. Results from a first-in-dog clinical trial are promising, including possible abscopal effects.
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Affiliation(s)
- Robert J Canter
- Department of Surgery, Division of Surgical Oncology, University of California Davis Medical Center, Sacramento, CA, 95817, USA. .,Department of Surgery, Division of Surgical Oncology, UC Davis School of Medicine, 4501 X Street, Suite 3010, Sacramento, CA, 95817, USA.
| | - Steven K Grossenbacher
- Laboratory of Cancer Immunology, Department of Dermatology, University of California Davis Medical Center, Sacramento, CA, 95817, USA
| | - Jennifer A Foltz
- Nationwide Children's Hospital, Center for Childhood Cancer & Blood Diseases, 700 Children's Drive, Columbus, OH, 43205, USA
| | - Ian R Sturgill
- Laboratory of Cancer Immunology, Department of Dermatology, University of California Davis Medical Center, Sacramento, CA, 95817, USA
| | - Jiwon S Park
- Department of Surgery, University of California Davis Medical Center, Sacramento, CA, 95817, USA
| | - Jesus I Luna
- Laboratory of Cancer Immunology, Department of Dermatology, University of California Davis Medical Center, Sacramento, CA, 95817, USA
| | - Michael S Kent
- The Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616, USA
| | - William T N Culp
- The Center for Companion Animal Health, Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616, USA
| | - Mingyi Chen
- Department of Pathology and Laboratory Medicine, UT Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Jaime F Modiano
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Animal Cancer Care and Research Center, Center for Immunology, Masonic Cancer Center, and Stem Cell Institute, University of Minnesota, St. Paul, MN, 55108, USA
| | - Arta M Monjazeb
- Department of Radiation Oncology, University of California Davis Medical Center, Sacramento, CA, 95817, USA
| | - Dean A Lee
- Nationwide Children's Hospital, Center for Childhood Cancer & Blood Diseases, 700 Children's Drive, Columbus, OH, 43205, USA
| | - William J Murphy
- Departments of Dermatology and Internal Medicine, University of California Davis Medical Center, Sacramento, CA, 95817, USA
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Eulenberg VM, Lidbury JA. Hepatic Fibrosis in Dogs. J Vet Intern Med 2017; 32:26-41. [PMID: 29194760 PMCID: PMC5787209 DOI: 10.1111/jvim.14891] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/17/2017] [Accepted: 10/31/2017] [Indexed: 12/19/2022] Open
Abstract
Hepatic fibrosis is commonly diagnosed in dogs, often as a sequela to chronic hepatitis (CH). The development of fibrosis is a crucial event in the progression of hepatic disease that is of prognostic value. The pathophysiology of hepatic fibrosis in human patients and rodent models has been studied extensively. Although less is known about this process in dogs, evidence suggests that fibrogenic mechanisms are similar between species and that activation of hepatic stellate cells is a key step. Diagnosis and staging of hepatic fibrosis in dogs requires histopathological examination of a liver biopsy specimen. However, performing a liver biopsy is invasive and assessment of fibrotic stage is complicated by the absence of a universally accepted staging scheme in veterinary medicine. Serum biomarkers that can discriminate among different fibrosis stages are used in human patients, but such markers must be more completely evaluated in dogs before clinical use. When successful treatment of its underlying cause is feasible, reversal of hepatic fibrosis has been shown to be possible in rodent models and human patients. Reversal of fibrosis has not been well documented in dogs, but successful treatment of CH is possible. In human medicine, better understanding of the pathomechanisms of hepatic fibrosis is leading to the development of novel treatment strategies. In time, these may be applied to dogs. This article comparatively reviews the pathogenesis of hepatic fibrosis, its diagnosis, and its treatment in dogs.
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Affiliation(s)
- V M Eulenberg
- Gastrointestinal Laboratory, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX
| | - J A Lidbury
- Gastrointestinal Laboratory, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX
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34
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Mazzega E, de Marco A. Engineered cross-reacting nanobodies simplify comparative oncology between humans and dogs. Vet Comp Oncol 2017; 16:E202-E206. [DOI: 10.1111/vco.12359] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 09/22/2017] [Indexed: 11/30/2022]
Affiliation(s)
- E. Mazzega
- Laboratory for Environmental and Life Sciences; University of Nova Gorica; Vipava Slovenia
| | - A. de Marco
- Laboratory for Environmental and Life Sciences; University of Nova Gorica; Vipava Slovenia
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