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Bergman PJ. Cancer Immunotherapy. Vet Clin North Am Small Anim Pract 2024; 54:441-468. [PMID: 38158304 DOI: 10.1016/j.cvsm.2023.12.002] [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] [Indexed: 01/03/2024]
Abstract
The enhanced understanding of immunology experienced over the last 5 decades afforded through the tools of molecular biology has recently translated into cancer immunotherapy becoming one of the most exciting and rapidly expanding fields. Human cancer immunotherapy is now recognized as one of the pillars of treatment alongside surgery, radiation, and chemotherapy. The field of veterinary cancer immunotherapy has also rapidly advanced in the last decade with a handful of commercially available products and a plethora of investigational cancer immunotherapies, which will hopefully expand our veterinary oncology treatment toolkit over time.
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Affiliation(s)
- Philip J Bergman
- Clinical Studies, VCA; Katonah Bedford Veterinary Center, Bedford Hills, NY, USA; Memorial Sloan-Kettering Cancer Center, New York, NY, USA.
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2
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Cao JW, Lake J, Impastato R, Chow L, Perez L, Chubb L, Kurihara J, Verneris MR, Dow S. Targeting osteosarcoma with canine B7-H3 CAR T cells and impact of CXCR2 Co-expression on functional activity. Cancer Immunol Immunother 2024; 73:77. [PMID: 38554158 PMCID: PMC10981605 DOI: 10.1007/s00262-024-03642-4] [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] [Received: 11/09/2023] [Accepted: 01/25/2024] [Indexed: 04/01/2024]
Abstract
The use of large animal spontaneous models of solid cancers, such as dogs with osteosarcoma (OS), can help develop new cancer immunotherapy approaches, including chimeric antigen receptor (CAR) T cells. The goal of the present study was to generate canine CAR T cells targeting the B7-H3 (CD276) co-stimulatory molecule overexpressed by several solid cancers, including OS in both humans and dogs, and to assess their ability to recognize B7-H3 expressed by canine OS cell lines or by canine tumors in xenograft models. A second objective was to determine whether a novel dual CAR that expressed a chemokine receptor together with the B7-H3 CAR improved the activity of the canine CAR T cells. Therefore, in the studies reported here we examined B7-H3 expression by canine OS tumors, evaluated target engagement by canine B7-H3 CAR T cells in vitro, and compared the relative effectiveness of B7-H3 CAR T cells versus B7-H3-CXCR2 dual CAR T cells in canine xenograft models. We found that most canine OS tumors expressed B7-H3; whereas, levels were undetectable on normal dog tissues. Both B7-H3 CAR T cells demonstrated activation and OS-specific target killing in vitro, but there was significantly greater cytokine production by B7-H3-CXCR2 CAR T cells. In canine OS xenograft models, little anti-tumor activity was generated by B7-H3 CAR T cells; whereas, B7-H3-CXCR2 CAR T cells significantly inhibited tumor growth, inducing complete tumor elimination in most treated mice. These findings indicated therefore that addition of a chemokine receptor could significantly improve the anti-tumor activity of canine B7-H3 CAR T cells, and that evaluation of this new dual CAR construct in dogs with primary or metastatic OS is warranted since such studies could provide a critical and realistic validation of the chemokine receptor concept.
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Affiliation(s)
- Jennifer W Cao
- Department of Microbiology, Immunology, and Pathology, Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Campus Delivery 1678, Fort Collins, CO, USA
| | - Jessica Lake
- Department of Pediatrics, Center for Cancer and Blood Disorders, University of Colorado and Children's Hospital of Colorado, Research Complex 1, North Tower 12800 E. 19th Ave. Mail Stop 8302, Room P18-4108, Aurora, CO, 80045, USA
| | - Renata Impastato
- Department of Clinical Sciences, Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Lyndah Chow
- Department of Clinical Sciences, Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Luisanny Perez
- Department of Clinical Sciences, Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Laura Chubb
- Department of Clinical Sciences, Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Jade Kurihara
- Department of Clinical Sciences, Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Michael R Verneris
- Department of Pediatrics, Center for Cancer and Blood Disorders, University of Colorado and Children's Hospital of Colorado, Research Complex 1, North Tower 12800 E. 19th Ave. Mail Stop 8302, Room P18-4108, Aurora, CO, 80045, USA.
| | - Steven Dow
- Department of Microbiology, Immunology, and Pathology, Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Campus Delivery 1678, Fort Collins, CO, USA.
- Department of Clinical Sciences, Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA.
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Rossmeisl JH, King JN, Robertson JL, Weger-Lucarelli J, Elankumaran S. Phase I/II Trial of Urokinase Plasminogen Activator-Targeted Oncolytic Newcastle Disease Virus for Canine Intracranial Tumors. Cancers (Basel) 2024; 16:564. [PMID: 38339315 PMCID: PMC10854777 DOI: 10.3390/cancers16030564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/24/2024] [Accepted: 01/27/2024] [Indexed: 02/12/2024] Open
Abstract
Neurotropic oncolytic viruses are appealing agents to treat brain tumors as they penetrate the blood-brain barrier and induce preferential cytolysis of neoplastic cells. The pathobiological similarities between human and canine brain tumors make immunocompetent dogs with naturally occurring tumors attractive models for the study of oncolytic virotherapies. In this dose-escalation/expansion study, an engineered Lasota NDV strain targeting the urokinase plasminogen activator system (rLAS-uPA) was administered by repetitive intravenous infusions to 20 dogs with intracranial tumors with the objectives of characterizing toxicities, immunologic responses, and neuroradiological anti-tumor effects of the virus for up to 6 months following treatment. Dose-limiting toxicities manifested as fever, hematologic, and neurological adverse events, and the maximum tolerated dose (MTD) of rLAS-uPA was 2 × 107 pfu/mL. Mild adverse events, including transient infusion reactions, diarrhea, and fever were observed in 16/18 of dogs treated at or below MTD. No infectious virus was recoverable from body fluids. Neutralizing antibodies to rLAS-uPA were present in all dogs by 2 weeks post-treatment, and viral genetic material was detected in post-treatment tumors from six dogs. Tumor volumetric reductions occurred in 2/11 dogs receiving the MTD. Systemically administered rLAS-uPA NDV was safe and induced anti-tumor effects in canine brain tumors, although modifications to evade host anti-viral immunity are needed to optimize this novel therapy.
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Affiliation(s)
- John H. Rossmeisl
- Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.N.K.); (J.L.R.)
| | - Jamie N. King
- Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.N.K.); (J.L.R.)
| | - John L. Robertson
- Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.N.K.); (J.L.R.)
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.W.-L.)
| | - James Weger-Lucarelli
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.W.-L.)
| | - Subbiah Elankumaran
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA; (J.W.-L.)
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Chow L, Wheat W, Ramirez D, Impastato R, Dow S. Direct comparison of canine and human immune responses using transcriptomic and functional analyses. Sci Rep 2024; 14:2207. [PMID: 38272935 PMCID: PMC10811214 DOI: 10.1038/s41598-023-50340-9] [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] [Received: 09/28/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
The canine spontaneous cancer model is increasingly utilized to evaluate new combined cancer immunotherapy approaches. While the major leukocyte subsets and phenotypes are closely related in dogs and humans, the functionality of T cells and antigen presenting cells in the two species has not been previously compared in detail. Such information would be important in interpreting immune response data and evaluating the potential toxicities of new cancer immunotherapies in dogs. To address this question, we used in vitro assays to compare the transcriptomic, cytokine, and proliferative responses of activated canine and human T cells, and also compared responses in activated macrophages. Transcriptomic analysis following T cell activation revealed shared expression of 515 significantly upregulated genes and 360 significantly downregulated immune genes. Pathway analysis identified 33 immune pathways shared between canine and human activated T cells, along with 34 immune pathways that were unique to each species. Activated human T cells exhibited a marked Th1 bias, whereas canine T cells were transcriptionally less active overall. Despite similar proliferative responses to activation, canine T cells produced significantly less IFN-γ than human T cells. Moreover, canine macrophages were significantly more responsive to activation by IFN-γ than human macrophages, as reflected by co-stimulatory molecule expression and TNF-α production. Thus, these studies revealed overall broad similarity in responses to immune activation between dogs and humans, but also uncovered important key quantitative and qualitative differences, particularly with respect to T cell responses, that should be considered in designing and evaluating cancer immunotherapy studies in dogs.
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Affiliation(s)
- Lyndah Chow
- Flint Animal Cancer Center, Department of Clinical Sciences and Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Campus Delivery 1678, Fort Collins, CO, USA.
| | - William Wheat
- Flint Animal Cancer Center, Department of Clinical Sciences and Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Campus Delivery 1678, Fort Collins, CO, USA
| | - Dominique Ramirez
- Flint Animal Cancer Center, Department of Clinical Sciences and Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Campus Delivery 1678, Fort Collins, CO, USA
- Department of Biochemistry, University of Colorado Boulder, Boulder, CO, USA
| | - Renata Impastato
- Flint Animal Cancer Center, Department of Clinical Sciences and Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Campus Delivery 1678, Fort Collins, CO, USA
| | - Steven Dow
- Flint Animal Cancer Center, Department of Clinical Sciences and Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Campus Delivery 1678, Fort Collins, CO, USA.
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5
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Vanhaezebrouck IF, Scarpelli ML. Companion Animals as a Key to Success for Translating Radiation Therapy Research into the Clinic. Cancers (Basel) 2023; 15:3377. [PMID: 37444487 PMCID: PMC10341092 DOI: 10.3390/cancers15133377] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/23/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
Many successful preclinical findings fail to be replicated during translation to human studies. This leads to significant resources being spent on large clinical trials, and in some cases, promising therapeutics not being pursued due to the high costs of clinical translation. These translational failures emphasize the need for improved preclinical models of human cancer so that there is a higher probability of successful clinical translation. Companion-animal cancers offer a potential solution. These cancers are more similar to human cancer than other preclinical models, with a natural evolution over time, genetic alterations, intact immune system, and a permanent adaptation to the microenvironment. These advantages have led pioneers in veterinary radiation oncology to aid human medicine by elucidating basic principles of radiation biology. More recently, the veterinary and human radiation oncology fields have increasingly collaborated to achieve advancements in education, radiotherapy techniques, and trial networks. This review describes these advancements, including significant prior research findings and the evolution of the veterinary radiation oncology discipline. It concludes by describing how companion-animal models can help shape the future of human radiotherapy. Taken as a whole, this review suggests companion-animal cancers may become widely used for preclinical radiotherapy research.
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Affiliation(s)
| | - Matthew L. Scarpelli
- School of Health Sciences, Purdue University, 550 W Stadium Ave, West Lafayette, IN 47907, USA;
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Ammons DT, MacDonald CR, Chow L, Repasky EA, Dow S. Chronic adrenergic stress and generation of myeloid-derived suppressor cells: Implications for cancer immunotherapy in dogs. Vet Comp Oncol 2023; 21:159-165. [PMID: 36876492 DOI: 10.1111/vco.12891] [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] [Received: 01/23/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/07/2023]
Abstract
Recent studies have highlighted a key role played by the sympathetic nervous system (SNS) and adrenergic stress in mediating immune suppression associated with chronic inflammation in cancer and other diseases. The connection between chronic SNS activation, adrenergic stress and immune suppression is linked in part to the ability of catecholamines to stimulate the bone marrow release and differentiation of myeloid-derived suppressor cells (MDSC). Rodent model studies have revealed an important role for β-adrenergic receptor signalling in suppression of cancer immunity in mice subjected to chronic stresses, including thermal stress. Importantly, therapeutic blockade of beta-adrenergic responses by drugs such as propranolol can partially reverse the generation and differentiation of MDSC, and partly restore tumour immunity. Clinical trials in both humans and dogs with cancer have demonstrated that propranolol blockade can improve responses to radiation therapy, cancer vaccines and immune checkpoint inhibitors. Thus, the SNS stress response has become an important new target to relieve immune suppression in cancer and other chronic inflammatory conditions.
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Affiliation(s)
- Dylan T Ammons
- Flint Animal Cancer Center, Fort Collins, Colorado, USA
- Department of Microbiology, Immunology, and Pathology, Fort Collins, Colorado, USA
| | - Cameron R MacDonald
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Lyndah Chow
- Flint Animal Cancer Center, Fort Collins, Colorado, USA
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Elizabeth A Repasky
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Steven Dow
- Flint Animal Cancer Center, Fort Collins, Colorado, USA
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
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Brady RV, Thamm DH. Tumor-associated macrophages: Prognostic and therapeutic targets for cancer in humans and dogs. Front Immunol 2023; 14:1176807. [PMID: 37090720 PMCID: PMC10113558 DOI: 10.3389/fimmu.2023.1176807] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 03/24/2023] [Indexed: 04/08/2023] Open
Abstract
Macrophages are ancient, phagocytic immune cells thought to have their origins 500 million years ago in metazoan phylogeny. The understanding of macrophages has evolved to encompass their foundational roles in development, homeostasis, tissue repair, inflammation, and immunity. Notably, macrophages display high plasticity in response to environmental cues, capable of a strikingly wide variety of dynamic gene signatures and phenotypes. Macrophages are also involved in many pathological states including neural disease, asthma, liver disease, heart disease, cancer, and others. In cancer, most tumor-associated immune cells are macrophages, coined tumor-associated macrophages (TAMs). While some TAMs can display anti-tumor properties such as phagocytizing tumor cells and orchestrating an immune response, most macrophages in the tumor microenvironment are immunosuppressive and pro-tumorigenic. Macrophages have been implicated in all stages of cancer. Therefore, interest in manipulating macrophages as a therapeutic strategy against cancer developed as early as the 1970s. Companion dogs are a strong comparative immuno-oncology model for people due to documented similarities in the immune system and spontaneous cancers between the species. Data from clinical trials in humans and dogs can be leveraged to further scientific advancements that benefit both species. This review aims to provide a summary of the current state of knowledge on macrophages in general, and an in-depth review of macrophages as a therapeutic strategy against cancer in humans and companion dogs.
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Affiliation(s)
- Rachel V. Brady
- Cell and Molecular Biology Graduate Program, Colorado State University, Fort Collins, CO, United States
| | - Douglas H. Thamm
- Cell and Molecular Biology Graduate Program, Colorado State University, Fort Collins, CO, United States
- Flint Animal Cancer Center, Colorado State University, Fort Collins, CO, United States
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Datta M, Chatterjee S, Perez EM, Gritsch S, Roberge S, Duquette M, Chen IX, Naxerova K, Kumar AS, Ghosh M, Emblem KE, Ng MR, Ho WW, Kumar P, Krishnan S, Dong X, Speranza MC, Neagu MR, Iorgulescu JB, Huang RY, Youssef G, Reardon DA, Sharpe AH, Freeman GJ, Suvà ML, Xu L, Jain RK. Losartan controls immune checkpoint blocker-induced edema and improves survival in glioblastoma mouse models. Proc Natl Acad Sci U S A 2023; 120:e2219199120. [PMID: 36724255 PMCID: PMC9963691 DOI: 10.1073/pnas.2219199120] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 12/29/2022] [Indexed: 02/03/2023] Open
Abstract
Immune checkpoint blockers (ICBs) have failed in all phase III glioblastoma trials. Here, we found that ICBs induce cerebral edema in some patients and mice with glioblastoma. Through single-cell RNA sequencing, intravital imaging, and CD8+ T cell blocking studies in mice, we demonstrated that this edema results from an inflammatory response following antiprogrammed death 1 (PD1) antibody treatment that disrupts the blood-tumor barrier. Used in lieu of immunosuppressive corticosteroids, the angiotensin receptor blocker losartan prevented this ICB-induced edema and reprogrammed the tumor microenvironment, curing 20% of mice which increased to 40% in combination with standard of care treatment. Using a bihemispheric tumor model, we identified a "hot" tumor immune signature prior to losartan+anti-PD1 therapy that predicted long-term survival. Our findings provide the rationale and associated biomarkers to test losartan with ICBs in glioblastoma patients.
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Affiliation(s)
- Meenal Datta
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Sampurna Chatterjee
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Elizabeth M. Perez
- Department of Pathology and Center for Cancer Research, Massachusetts General Hospital, Harvard Medical School, Boston, MA02114
- Broad Institute of MIT and Harvard, Cambridge, MA02142
- Department of Systems Biology, Harvard Medical School, Boston, MA02115
| | - Simon Gritsch
- Department of Pathology and Center for Cancer Research, Massachusetts General Hospital, Harvard Medical School, Boston, MA02114
- Broad Institute of MIT and Harvard, Cambridge, MA02142
| | - Sylvie Roberge
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Mark Duquette
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Ivy X. Chen
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Kamila Naxerova
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Ashwin S. Kumar
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA02142
| | - Mitrajit Ghosh
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Kyrre E. Emblem
- Department of Physics and Computational Radiology, Division of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, 0372Norway
| | - Mei R. Ng
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - William W. Ho
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA02142
| | - Pragya Kumar
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Shanmugarajan Krishnan
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Xinyue Dong
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Maria C. Speranza
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA02115
- Department of Medicine, Harvard Medical School, Boston, MA02115
| | - Martha R. Neagu
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA
| | - J. Bryan Iorgulescu
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA02115
| | - Raymond Y. Huang
- Department of Radiology, Brigham and Women’s Hospital, Boston, MA02115
| | - Gilbert Youssef
- Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, MA02215
| | - David A. Reardon
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA02115
- Department of Medicine, Harvard Medical School, Boston, MA02115
| | - Arlene H. Sharpe
- Broad Institute of MIT and Harvard, Cambridge, MA02142
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA
| | - Gordon J. Freeman
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA02115
- Department of Medicine, Harvard Medical School, Boston, MA02115
| | - Mario L. Suvà
- Department of Pathology and Center for Cancer Research, Massachusetts General Hospital, Harvard Medical School, Boston, MA02114
- Broad Institute of MIT and Harvard, Cambridge, MA02142
| | - Lei Xu
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
| | - Rakesh K. Jain
- Edwin L. Steele Laboratories, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA02114
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Cao J, Chow L, Dow S. Strategies to overcome myeloid cell induced immune suppression in the tumor microenvironment. Front Oncol 2023; 13:1116016. [PMID: 37114134 PMCID: PMC10126309 DOI: 10.3389/fonc.2023.1116016] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/17/2023] [Indexed: 04/29/2023] Open
Abstract
Cancer progression and metastasis due to tumor immune evasion and drug resistance is strongly associated with immune suppressive cellular responses, particularly in the case of metastatic tumors. The myeloid cell component plays a key role within the tumor microenvironment (TME) and disrupts both adaptive and innate immune cell responses leading to loss of tumor control. Therefore, strategies to eliminate or modulate the myeloid cell compartment of the TME are increasingly attractive to non-specifically increase anti-tumoral immunity and enhance existing immunotherapies. This review covers current strategies targeting myeloid suppressor cells in the TME to enhance anti-tumoral immunity, including strategies that target chemokine receptors to deplete selected immune suppressive myeloid cells and relieve the inhibition imposed on the effector arms of adaptive immunity. Remodeling the TME can in turn improve the activity of other immunotherapies such as checkpoint blockade and adoptive T cell therapies in immunologically "cold" tumors. When possible, in this review, we have provided evidence and outcomes from recent or current clinical trials evaluating the effectiveness of the specific strategies used to target myeloid cells in the TME. The review seeks to provide a broad overview of how myeloid cell targeting can become a key foundational approach to an overall strategy for improving tumor responses to immunotherapy.
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Affiliation(s)
- Jennifer Cao
- Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
| | - Lyndah Chow
- Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
| | - Steven Dow
- Flint Animal Cancer Center, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
- *Correspondence: Steven Dow,
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