1
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Mendez-Gomez HR, DeVries A, Castillo P, von Roemeling C, Qdaisat S, Stover BD, Xie C, Weidert F, Zhao C, Moor R, Liu R, Soni D, Ogando-Rivas E, Chardon-Robles J, McGuiness J, Zhang D, Chung MC, Marconi C, Michel S, Barpujari A, Jobin GW, Thomas N, Ma X, Campaneria Y, Grippin A, Karachi A, Li D, Sahay B, Elliott L, Foster TP, Coleman KE, Milner RJ, Sawyer WG, Ligon JA, Simon E, Cleaver B, Wynne K, Hodik M, Molinaro AM, Guan J, Kellish P, Doty A, Lee JH, Massini T, Kresak JL, Huang J, Hwang EI, Kline C, Carrera-Justiz S, Rahman M, Gatica S, Mueller S, Prados M, Ghiaseddin AP, Silver NL, Mitchell DA, Sayour EJ. RNA aggregates harness the danger response for potent cancer immunotherapy. Cell 2024; 187:2521-2535.e21. [PMID: 38697107 DOI: 10.1016/j.cell.2024.04.003] [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: 06/16/2023] [Revised: 01/09/2024] [Accepted: 04/03/2024] [Indexed: 05/04/2024]
Abstract
Cancer immunotherapy remains limited by poor antigenicity and a regulatory tumor microenvironment (TME). Here, we create "onion-like" multi-lamellar RNA lipid particle aggregates (LPAs) to substantially enhance the payload packaging and immunogenicity of tumor mRNA antigens. Unlike current mRNA vaccine designs that rely on payload packaging into nanoparticle cores for Toll-like receptor engagement in immune cells, systemically administered RNA-LPAs activate RIG-I in stromal cells, eliciting massive cytokine/chemokine response and dendritic cell/lymphocyte trafficking that provokes cancer immunogenicity and mediates rejection of both early- and late-stage murine tumor models. In client-owned canines with terminal gliomas, RNA-LPAs improved survivorship and reprogrammed the TME, which became "hot" within days of a single infusion. In a first-in-human trial, RNA-LPAs elicited rapid cytokine/chemokine release, immune activation/trafficking, tissue-confirmed pseudoprogression, and glioma-specific immune responses in glioblastoma patients. These data support RNA-LPAs as a new technology that simultaneously reprograms the TME while eliciting rapid and enduring cancer immunotherapy.
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Affiliation(s)
- Hector R Mendez-Gomez
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Anna DeVries
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Paul Castillo
- University of Florida, Department of Pediatrics, Division of Hematology-Oncology, Gainesville, FL 32610, USA
| | - Christina von Roemeling
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Sadeem Qdaisat
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA; University of Florida Genetics Institute, Gainesville, FL 32610, USA
| | - Brian D Stover
- University of Florida, Department of Pediatrics, Division of Hematology-Oncology, Gainesville, FL 32610, USA
| | - Chao Xie
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Frances Weidert
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Chong Zhao
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Rachel Moor
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Ruixuan Liu
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Dhruvkumar Soni
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Elizabeth Ogando-Rivas
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Jonathan Chardon-Robles
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - James McGuiness
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Dingpeng Zhang
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Michael C Chung
- University of Texas at Austin, College of Pharmacy, Division of Chemical Biology and Medicinal Chemistry, Austin TX 78712
| | - Christiano Marconi
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Stephen Michel
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Arnav Barpujari
- University of Florida, Department of Pediatrics, Division of Hematology-Oncology, Gainesville, FL 32610, USA
| | - Gabriel W Jobin
- University of Florida, Department of Pediatrics, Division of Hematology-Oncology, Gainesville, FL 32610, USA
| | - Nagheme Thomas
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Xiaojie Ma
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA; University of Florida, Department of Pediatrics, Division of Hematology-Oncology, Gainesville, FL 32610, USA
| | - Yodarlynis Campaneria
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Adam Grippin
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Aida Karachi
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Derek Li
- University of Florida, Division of Quantitative Sciences, UF Health Cancer Center, Gainesville, FL 32610, USA
| | - Bikash Sahay
- University of Florida, College of Veterinary Medicine, Gainesville, FL 32610, USA
| | - Leighton Elliott
- University of Florida, Department of Medicine, Division of Hematology-Oncology, Gainesville, FL 32610, USA
| | - Timothy P Foster
- University of Florida, Department of Pediatrics, Division of Hematology-Oncology, Gainesville, FL 32610, USA
| | - Kirsten E Coleman
- University of Florida, Department of Pediatrics, Division of Hematology-Oncology, Gainesville, FL 32610, USA
| | - Rowan J Milner
- University of Florida, College of Veterinary Medicine, Gainesville, FL 32610, USA
| | - W Gregory Sawyer
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - John A Ligon
- University of Florida, Department of Pediatrics, Division of Hematology-Oncology, Gainesville, FL 32610, USA
| | - Eugenio Simon
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Brian Cleaver
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Kristine Wynne
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Marcia Hodik
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Annette M Molinaro
- University of California, San Francisco, Department of Neurological Surgery, San Francisco, CA 94158, USA
| | - Juan Guan
- University of Texas at Austin, College of Pharmacy, Division of Chemical Biology and Medicinal Chemistry, Austin TX 78712
| | - Patrick Kellish
- University of Florida Interdisciplinary Center for Biotechnology Research, Gainesville, FL 32610, USA
| | - Andria Doty
- University of Florida Interdisciplinary Center for Biotechnology Research, Gainesville, FL 32610, USA
| | - Ji-Hyun Lee
- University of Florida, Department of Biostatistics, Gainesville, FL 32610, USA
| | - Tara Massini
- University of Florida, Department of Radiology, Gainesville, FL 32610, USA
| | - Jesse L Kresak
- University of Florida, Department of Pathology, Gainesville, FL 32610, USA
| | - Jianping Huang
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Eugene I Hwang
- Children's National Hospital, Center for Cancer and Blood Disorders, Washington, DC 20010, USA
| | - Cassie Kline
- University of Pennsylvania Perelman School of Medicine, Children's Hospital of Philadelphia, Department of Pediatrics, Division of Oncology, Philadelphia, PA 19104, USA
| | | | - Maryam Rahman
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Sebastian Gatica
- University of Florida, Department of Anesthesiology, Gainesville, FL 32610, USA
| | - Sabine Mueller
- University of California, San Francisco, Department of Neurology, Neurological Surgery, and Pediatrics, San Francisco, CA 94158, USA
| | - Michael Prados
- University of California, San Francisco, Department of Neurological Surgery, San Francisco, CA 94158, USA
| | - Ashley P Ghiaseddin
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Natalie L Silver
- Cleveland Clinic, Center of Immunotherapy and Precision Immuno-Oncology/Head and Neck Institute, Cleveland, OH 44106, USA
| | - Duane A Mitchell
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA
| | - Elias J Sayour
- University of Florida Lillian S. Wells Department of Neurosurgery, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL 32610, USA; University of Florida, Department of Pediatrics, Division of Hematology-Oncology, Gainesville, FL 32610, USA.
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2
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Oh JH, Cho JY. Comparative oncology: overcoming human cancer through companion animal studies. Exp Mol Med 2023; 55:725-734. [PMID: 37009802 PMCID: PMC10167357 DOI: 10.1038/s12276-023-00977-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/20/2023] [Accepted: 01/25/2023] [Indexed: 04/04/2023] Open
Abstract
Comparative oncology is a field of study that has been recently adopted for studying cancer and developing cancer therapies. Companion animals such as dogs can be used to evaluate novel biomarkers or anticancer targets before clinical translation. Thus, the value of canine models is increasing, and numerous studies have been conducted to analyze similarities and differences between many types of spontaneously occurring cancers in canines and humans. A growing number of canine cancer models as well as research-grade reagents for these models are becoming available, leading to substantial growth in comparative oncology research spanning from basic science to clinical trials. In this review, we summarize comparative oncology studies that have been conducted on the molecular landscape of various canine cancers and highlight the importance of the integration of comparative biology into cancer research.
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Affiliation(s)
- Ji Hoon Oh
- Department of Biochemistry, Brain Korea 21 Project and Research Institute for Veterinary Science, Seoul National University College of Veterinary Medicine, Seoul, 08826, Republic of Korea
- Comparative Medicine Disease Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Je-Yoel Cho
- Department of Biochemistry, Brain Korea 21 Project and Research Institute for Veterinary Science, Seoul National University College of Veterinary Medicine, Seoul, 08826, Republic of Korea.
- Comparative Medicine Disease Research Center, Seoul National University, Seoul, 08826, Republic of Korea.
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Ciftci O, Müller LM, Jäggle LM, Lehmann C, Kneilmann C, Stierstorfer B, Roy U, Witsch EJ. Cross-reactivity of human monoclonal antibodies with canine peripheral blood mononuclear cells. Vet Immunol Immunopathol 2023; 259:110578. [PMID: 36965292 DOI: 10.1016/j.vetimm.2023.110578] [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: 02/07/2023] [Revised: 03/07/2023] [Accepted: 03/11/2023] [Indexed: 03/19/2023]
Abstract
In drug development, the dog is often used as a model for non-rodent preclinical safety studies. In particular, immunophenotyping in dogs can be important to characterize the toxicological profile of a test item. A wide range of antibodies specific to surface antigens is needed, however, commercially available antibodies to dog are scarce. To date, numerous studies have reported the cross-reactivity of human monoclonal antibodies with canine peripheral blood mononuclear cells (PBMC). In this study, we aimed to increase the number of canine-specific antibodies and took a rather novel approach to further determine cross-reactivity of 378 human recombinant antibodies lacking Fc regions to surface antigens on canine PBMC. The screening resulted in 30 human monoclonal antibodies well reactive to canine PBMC. Sequence homology of the targeted human and canine antigens was analyzed with Basic Local Alignment Search Tool. Thirteen human cross-reactive antibodies of interest were analyzed with cells from canine whole blood in combination with lineage markers. Finally, ten antibodies were identified as useful markers for the application in dog. Except for CD27, the remaining nine antibodies are already commercially available human cross-reactive antibodies. This study provides a new source for all ten antibodies described here.
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Affiliation(s)
- Oktay Ciftci
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Laura Mara Müller
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Lisa-Marie Jäggle
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Christine Lehmann
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Christine Kneilmann
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Birgit Stierstorfer
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Urmi Roy
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Esther Julia Witsch
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany.
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4
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Mendez-Gomez HR, DeVries A, Castillo P, Stover BD, Qdaisat S, Von Roemeling C, Ogando-Rivas E, Weidert F, McGuiness J, Zhang D, Chung MC, Li D, Zhang C, Marconi C, Campaneria Y, Chardon-Robles J, Grippin A, Karachi A, Thomas N, Huang J, Milner R, Sahay B, Sawyer WG, Ligon JA, Silver N, Simon E, Cleaver B, Wynne K, Hodik M, Molinaro A, Guan J, Kellish P, Doty A, Lee JH, Carrera-Justiz S, Rahman M, Gatica S, Mueller S, Prados M, Ghiaseddin A, Mitchell DA, Sayour EJ. mRNA aggregates harness danger response for potent cancer immunotherapy. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.03.12.23287108. [PMID: 36993772 PMCID: PMC10055442 DOI: 10.1101/2023.03.12.23287108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Messenger RNA (mRNA) has emerged as a remarkable tool for COVID-19 prevention but its use for induction of therapeutic cancer immunotherapy remains limited by poor antigenicity and a regulatory tumor microenvironment (TME). Herein, we develop a facile approach for substantially enhancing immunogenicity of tumor-derived mRNA in lipid-particle (LP) delivery systems. By using mRNA as a molecular bridge with ultrapure liposomes and foregoing helper lipids, we promote the formation of 'onion-like' multi-lamellar RNA-LP aggregates (LPA). Intravenous administration of RNA-LPAs mimics infectious emboli and elicits massive DC/T cell mobilization into lymphoid tissues provoking cancer immunogenicity and mediating rejection of both early and late-stage murine tumor models. Unlike current mRNA vaccine designs that rely on payload packaging into nanoparticle cores for toll-like receptor engagement, RNA-LPAs stimulate intracellular pathogen recognition receptors (RIG-I) and reprogram the TME thus enabling therapeutic T cell activity. RNA-LPAs were safe in acute/chronic murine GLP toxicology studies and immunologically active in client-owned canines with terminal gliomas. In an early phase first-in-human trial for patients with glioblastoma, we show that RNA-LPAs encoding for tumor-associated antigens elicit rapid induction of pro-inflammatory cytokines, mobilization/activation of monocytes and lymphocytes, and expansion of antigen-specific T cell immunity. These data support the use of RNA-LPAs as novel tools to elicit and sustain immune responses against poorly immunogenic tumors.
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Ammons DT, Guth A, Rozental AJ, Kurihara J, Marolf AJ, Chow L, Griffin JF, Makii R, MacQuiddy B, Boss MK, Regan DP, Frank C, McGrath S, Packer RA, Dow S. Reprogramming the Canine Glioma Microenvironment with Tumor Vaccination plus Oral Losartan and Propranolol Induces Objective Responses. CANCER RESEARCH COMMUNICATIONS 2022; 2:1657-1667. [PMID: 36644324 PMCID: PMC9835010 DOI: 10.1158/2767-9764.crc-22-0388] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 11/17/2022]
Abstract
Purpose Malignant gliomas have a highly immune suppressive tumor microenvironment (TME) which renders them largely unresponsive to conventional therapeutics. Therefore, the present study evaluated a therapeutic protocol designed overcome the immune barrier by combining myeloid cell targeted immunotherapy with tumor vaccination. Experimental Design We utilized a spontaneously occurring canine glioma model to investigate an oral TME modifying immunotherapy in conjunction with cancer stem cell (CSC) vaccination. Dogs were treated daily with losartan (monocyte migration inhibitor) and propranolol (myeloid-derived suppressor cell depleting agent) plus anti-CSC vaccination on a bi-weekly then monthly schedule. Tumor volume was monitored by MRI and correlated with patient immune responses. Results Ten dogs with histologically confirmed gliomas were enrolled into a prospective, open-label clinical trial to evaluate the immunotherapy protocol. Partial tumor regression was observed in 2 dogs, while 6 dogs experienced stable disease, for an overall clinical benefit rate of 80%. Overall survival times (median = 351 days) and progression-free intervals (median = 163 days) were comparable to prior studies evaluating surgical debulking followed by immunotherapy. Dogs with detectable anti-CSC antibody responses had an increased overall survival time relative to dogs that did not generate antibody responses (vaccine responder MST = 500 days; vaccine non-responder MST = 218 days; p = 0.02). Conclusions These findings suggest that combining myeloid cell targeted oral immunotherapy with tumor vaccination can generate objective tumor responses, even in the absence of conventional therapy. Overall, this approach has promise as a readily implemented therapeutic strategy for use in brain cancer patients.
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Affiliation(s)
- Dylan T. Ammons
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado
| | - Amanda Guth
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado
| | - Aaron J. Rozental
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado
| | - Jade Kurihara
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado
| | - Angela J. Marolf
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado
| | - Lyndah Chow
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado
| | - John F. Griffin
- Department of Large Animal Clinical Sciences, Texas A&M University, College Station, Texas
| | - Rebecca Makii
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado
| | - Brittany MacQuiddy
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado
| | - Mary-Keara Boss
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado
| | - Daniel P. Regan
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado
| | - Chad Frank
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado
| | - Stephanie McGrath
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado
| | - Rebecca A. Packer
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado
| | - Steven Dow
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado
- Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado
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6
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Abstract
Gliomas are relatively common tumors in aged dogs (especially brachycephalic breeds), and the dog is proving to be useful as a translational model for humans with brain tumors. Hitherto, there is relatively little prognostic data for canine gliomas and none on outcome related to specific histological features. Histologic sections of tumor biopsies from 33 dogs with glioma treated with surgical resection and immunotherapy and 21 whole brains obtained postmortem were reviewed. Tumors were diagnosed as astrocytic, oligodendroglial, or undefined glioma using Comparative Brain Tumor Consortium criteria. Putative features of malignancy were evaluated, namely, mitotic counts, glomeruloid vascularization, and necrosis. For biopsies, dogs with astrocytic tumors lived longer than those with oligodendroglial or undefined tumor types (median survival 743, 205, and 144 days, respectively). Dogs with low-grade gliomas lived longer than those with high-grade gliomas (median survival 734 and 194 days, respectively). Based on analysis of tumor biopsies, low mitotic counts, absence of glomeruloid vascularization, and absence of necrosis correlated with increased survival (median 293, 223, and 220 days, respectively), whereas high mitotic counts, glomeruloid vascularization, and necrosis correlated with poor survival (median 190, 170, and 154 days, respectively). Mitotic count was the only histological feature in biopsy samples that significantly correlated with survival (P < .05). Whole-brain analyses for those same histologic features had similar and more robust correlations, and were statistically significant for all features (P < .05). The small size of biopsy samples may explain differences between biopsy and whole-brain tumor data. These findings will allow more accurate prognosis for gliomas.
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Affiliation(s)
| | | | - Aaron Rendahl
- University of Minnesota Twin Cities, St. Paul, MN, USA
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7
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Preclinical models and technologies to advance nanovaccine development. Adv Drug Deliv Rev 2021; 172:148-182. [PMID: 33711401 DOI: 10.1016/j.addr.2021.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 12/13/2022]
Abstract
The remarkable success of targeted immunotherapies is revolutionizing cancer treatment. However, tumor heterogeneity and low immunogenicity, in addition to several tumor-associated immunosuppression mechanisms are among the major factors that have precluded the success of cancer vaccines as targeted cancer immunotherapies. The exciting outcomes obtained in patients upon the injection of tumor-specific antigens and adjuvants intratumorally, reinvigorated interest in the use of nanotechnology to foster the delivery of vaccines to address cancer unmet needs. Thus, bridging nano-based vaccine platform development and predicted clinical outcomes the selection of the proper preclinical model will be fundamental. Preclinical models have revealed promising outcomes for cancer vaccines. However, only few cases were associated with clinical responses. This review addresses the major challenges related to the translation of cancer nano-based vaccines to the clinic, discussing the requirements for ex vivo and in vivo models of cancer to ensure the translation of preclinical success to patients.
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8
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Abstract
Comparative oncology clinical trials play an important and growing role in cancer research and drug development efforts. These trials, typically conducted in companion (pet) dogs, allow assessment of novel anticancer agents and combination therapies in a veterinary clinical setting that supports serial biologic sample collections and exploration of dose, schedule and corresponding pharmacokinetic/pharmacodynamic relationships. Further, an intact immune system and natural co-evolution of tumour and microenvironment support exploration of novel immunotherapeutic strategies. Substantial improvements in our collective understanding of the molecular landscape of canine cancers have occurred in the past 10 years, facilitating translational research and supporting the inclusion of comparative studies in drug development. The value of the approach is demonstrated in various clinical trial settings, including single-agent or combination response rates, inhibition of metastatic progression and randomized comparison of multiple agents in a head-to-head fashion. Such comparative oncology studies have been purposefully included in the developmental plan for several US FDA-approved and up-and-coming anticancer drugs. Challenges for this field include keeping pace with technology and data dissemination/harmonization, improving annotation of the canine genome and immune system, and generation of canine-specific validated reagents to support integration of correlative biology within clinical trial efforts.
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Affiliation(s)
- Amy K LeBlanc
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Christina N Mazcko
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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9
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Partridge B, Rossmeisl JH. Companion animal models of neurological disease. J Neurosci Methods 2020; 331:108484. [PMID: 31733285 PMCID: PMC6942211 DOI: 10.1016/j.jneumeth.2019.108484] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 02/07/2023]
Abstract
Clinical translation of novel therapeutics that improve the survival and quality of life of patients with neurological disease remains a challenge, with many investigational drug and device candidates failing in advanced stage clinical trials. Naturally occurring inherited and acquired neurological diseases, such as epilepsy, inborn errors of metabolism, brain tumors, spinal cord injury, and stroke occur frequently in companion animals, and many of these share epidemiologic, pathophysiologic and clinical features with their human counterparts. As companion animals have a relatively abbreviated lifespan and genetic background, are immunocompetent, share their environment with human caregivers, and can be clinically managed using techniques and tools similar to those used in humans, they have tremendous potential for increasing the predictive value of preclinical drug and device studies. Here, we review comparative features of spontaneous neurological diseases in companion animals with an emphasis on neuroimaging methods and features, illustrate their historical use in translational studies, and discuss inherent limitations associated with each disease model. Integration of companion animals with naturally occurring disease into preclinical studies can complement and expand the knowledge gained from studies in other animal models, accelerate or improve the manner in which research is translated to the human clinic, and ultimately generate discoveries that will benefit the health of humans and animals.
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Affiliation(s)
- Brittanie Partridge
- Veterinary and Comparative Neuro-Oncology Laboratory, Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, 24061, USA; Brain Tumor Center of Excellence, Wake Forest University Comprehensive Cancer Center, Medical Center Blvd, NRC 405, Winston Salem, NC, 27157, USA
| | - 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; Brain Tumor Center of Excellence, Wake Forest University Comprehensive Cancer Center, Medical Center Blvd, NRC 405, Winston Salem, NC, 27157, USA.
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10
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Withers SS, Sparger EE, Boudreaux B, Mason NJ. Utilizing Microbes to Treat Naturally Occurring Cancer in Veterinary Species. CURRENT CLINICAL MICROBIOLOGY REPORTS 2019. [DOI: 10.1007/s40588-019-00130-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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11
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Overgaard NH, Fan TM, Schachtschneider KM, Principe DR, Schook LB, Jungersen G. Of Mice, Dogs, Pigs, and Men: Choosing the Appropriate Model for Immuno-Oncology Research. ILAR J 2019; 59:247-262. [PMID: 30476148 DOI: 10.1093/ilar/ily014] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 07/30/2018] [Indexed: 02/06/2023] Open
Abstract
The immune system plays dual roles in response to cancer. The host immune system protects against tumor formation via immunosurveillance; however, recognition of the tumor by immune cells also induces sculpting mechanisms leading to a Darwinian selection of tumor cell variants with reduced immunogenicity. Cancer immunoediting is the concept used to describe the complex interplay between tumor cells and the immune system. This concept, commonly referred to as the three E's, is encompassed by 3 distinct phases of elimination, equilibrium, and escape. Despite impressive results in the clinic, cancer immunotherapy still has room for improvement as many patients remain unresponsive to therapy. Moreover, many of the preclinical results obtained in the widely used mouse models of cancer are lost in translation to human patients. To improve the success rate of immuno-oncology research and preclinical testing of immune-based anticancer therapies, using alternative animal models more closely related to humans is a promising approach. Here, we describe 2 of the major alternative model systems: canine (spontaneous) and porcine (experimental) cancer models. Although dogs display a high rate of spontaneous tumor formation, an increased number of genetically modified porcine models exist. We suggest that the optimal immuno-oncology model may depend on the stage of cancer immunoediting in question. In particular, the spontaneous canine tumor models provide a unique platform for evaluating therapies aimed at the escape phase of cancer, while genetically engineered swine allow for elucidation of tumor-immune cell interactions especially during the phases of elimination and equilibrium.
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Affiliation(s)
- Nana H Overgaard
- Department of Micro- and Nanotechnology, Technical University of Denmark, Kgs Lyngby, Denmark
| | - Timothy M Fan
- Department of Veterinary Clinical Medicine, University of Illinois, Urbana-Champaign, Illinois
| | | | - Daniel R Principe
- Medical Scientist Training Program, University of Illinois College of Medicine, Chicago, Illinois
| | - Lawrence B Schook
- Department of Radiology, University of Illinois, Chicago, Illinois.,Department of Animal Sciences, University of Illinois, Urbana-Champaign, Illinois
| | - Gregers Jungersen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
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12
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Miller AD, Miller CR, Rossmeisl JH. Canine Primary Intracranial Cancer: A Clinicopathologic and Comparative Review of Glioma, Meningioma, and Choroid Plexus Tumors. Front Oncol 2019; 9:1151. [PMID: 31788444 PMCID: PMC6856054 DOI: 10.3389/fonc.2019.01151] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/16/2019] [Indexed: 12/22/2022] Open
Abstract
In the dog, primary intracranial neoplasia represents ~2-5% of all cancers and is especially common in certain breeds including English and French bulldogs and Boxers. The most common types of primary intracranial cancer in the dog are meningioma, glioma, and choroid plexus tumors, generally occurring in middle aged to older dogs. Much work has recently been done to understand the characteristic imaging and clinicopathologic features of these tumors. The gross and histologic landscape of these tumors in the dog compare favorably to their human counterparts with many similarities noted in histologic patterns, subtype, and grades. Data informing the underlying molecular abnormalities in the canine tumors have only begun to be unraveled, but reveal similar pathways are mutated between canine and human primary intracranial neoplasia. This review will provide an overview of the clinicopathologic features of the three most common forms of primary intracranial cancer in the dog, delve into the comparative aspects between the dog and human neoplasms, and provide an introduction to current standard of care while also highlighting novel, experimental treatments that may help bridge the gap between canine and human cancer therapies.
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Affiliation(s)
- Andrew D. Miller
- Section of Anatomic Pathology, Department of Biomedical Sciences, Cornell University College of Veterinary Medicine, Ithaca, NY, United States
| | - C. Ryan Miller
- Division of Neuropathology, Department of Pathology, O'Neal Comprehensive Cancer Center and Comprehensive Neuroscience Center, University of Alabama School of Medicine, Birmingham, AL, United States
| | - John H. Rossmeisl
- Section of Neurology and Neurosurgery, Veterinary and Comparative Neuro-Oncology Laboratory, Department of Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA, United States
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13
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Dalton MF, Stilwell JM, Krimer PM, Miller AD, Rissi DR. Clinicopathologic Features, Diagnosis, and Characterization of the Immune Cell Population in Canine Choroid Plexus Tumors. Front Vet Sci 2019; 6:224. [PMID: 31380398 PMCID: PMC6646530 DOI: 10.3389/fvets.2019.00224] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 06/20/2019] [Indexed: 12/28/2022] Open
Abstract
The World Health Organization characterizes human choroid plexus tumor (CPT) as papilloma (CPP), atypical CPP (ACPP), and carcinoma (CPC). CPCs can disseminate via cerebrospinal fluid and be mistaken for metastatic carcinoma, creating a diagnostic challenge. Kir7.1 immunohistochemistry (IHC) is a highly reliable tool for diagnostic confirmation of CPTs and their differentiation from metastatic carcinomas in human beings and dogs. This study describes the neuropathology, Kir7.1 staining profile, and the immune cell population within the tumor microenvironment in 11 CPTs in dogs. Archived tissue sections with a diagnosis of CPT were examined and immunolabelled with Kir7.1 for diagnostic confirmation. The number of Ki67-positive neoplastic cells was calculated in 2.4 mm2 (equivalent to 10 FN22/40X fields), and a mean value was generated for each neoplasm. IHC for CD3, CD20, MAC387, and Iba1 was performed for immune cell characterization, and the number of stained cells for each antibody was counted in 2.4 mm2, generating individual cumulative values for each antibody. T-tests with Bonferroni correction evaluated IHC differences between tumor types, and Spearman's rank correlations evaluated relationships among IHC markers. Kir7.1 immunoreactivity was intense at the apical cell membrane in CPPs and ACPPs, and at the apical cell membrane and cytoplasm in CPCs. Ki67 immunoreactivity was detected in all cases. CD3+ and CD20+ lymphocytes trended together (p = 0.005) and were present within and around all CPTs. Five cases had intravascular MAC387+ monocytes. Iba1 immunoreactivity was robust within and around all tumors. Statistical differences in immune cell markers were not found among tumor types. As previously reported, Kir7.1 is a reliable antibody for the diagnosis of canine CPTs. Although immune cells were present in all cases, no significant associations were found between the type of cells and tumor diagnosis. The characterization of the immune cells within CPTs could be useful in future studies involving immunotherapy.
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Affiliation(s)
- Martha F Dalton
- Department of Pathology and Athens Veterinary Diagnostic Laboratory, University of Georgia College of Veterinary Medicine, Athens, GA, United States
| | - Justin M Stilwell
- Department of Pathology and Athens Veterinary Diagnostic Laboratory, University of Georgia College of Veterinary Medicine, Athens, GA, United States
| | - Paula M Krimer
- Department of Pathology and Athens Veterinary Diagnostic Laboratory, University of Georgia College of Veterinary Medicine, Athens, GA, United States
| | - Andrew D Miller
- Section of Anatomic Pathology, Department of Biomedical Sciences, Cornell University College of Veterinary Medicine, Ithaca, NY, United States
| | - Daniel R Rissi
- Department of Pathology and Athens Veterinary Diagnostic Laboratory, University of Georgia College of Veterinary Medicine, Athens, GA, United States
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14
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Forbes NS, Coffin RS, Deng L, Evgin L, Fiering S, Giacalone M, Gravekamp C, Gulley JL, Gunn H, Hoffman RM, Kaur B, Liu K, Lyerly HK, Marciscano AE, Moradian E, Ruppel S, Saltzman DA, Tattersall PJ, Thorne S, Vile RG, Zhang HH, Zhou S, McFadden G. White paper on microbial anti-cancer therapy and prevention. J Immunother Cancer 2018; 6:78. [PMID: 30081947 PMCID: PMC6091193 DOI: 10.1186/s40425-018-0381-3] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/27/2018] [Indexed: 12/13/2022] Open
Abstract
In this White Paper, we discuss the current state of microbial cancer therapy. This paper resulted from a meeting ('Microbial Based Cancer Therapy') at the US National Cancer Institute in the summer of 2017. Here, we define 'Microbial Therapy' to include both oncolytic viral therapy and bacterial anticancer therapy. Both of these fields exploit tumor-specific infectious microbes to treat cancer, have similar mechanisms of action, and are facing similar challenges to commercialization. We designed this paper to nucleate this growing field of microbial therapeutics and increase interactions between researchers in it and related fields. The authors of this paper include many primary researchers in this field. In this paper, we discuss the potential, status and opportunities for microbial therapy as well as strategies attempted to date and important questions that need to be addressed. The main areas that we think will have the greatest impact are immune stimulation, control of efficacy, control of delivery, and safety. There is much excitement about the potential of this field to treat currently intractable cancer. Much of the potential exists because these therapies utilize unique mechanisms of action, difficult to achieve with other biological or small molecule drugs. By better understanding and controlling these mechanisms, we will create new therapies that will become integral components of cancer care.
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Affiliation(s)
- Neil S Forbes
- grid.266683.f0000 0001 2184 9220Department of Chemical EngineeringUniversity of Massachusetts 159 Goessmann Hall 01003 Amherst MA USA
| | | | - Liang Deng
- 0000 0001 2171 9952grid.51462.34Department of Medicine, Memorial Sloan Kettering Cancer Center 10065 New York NY USA
| | - Laura Evgin
- 0000 0004 0459 167Xgrid.66875.3aMayo Clinic Rochester USA
| | - Steve Fiering
- 0000 0001 2179 2404grid.254880.3Geisel School of Medicine at Dartmouth Hanover USA
| | | | - Claudia Gravekamp
- 0000000121791997grid.251993.5Albert Einstein College of Medicine Bronx USA
| | - James L Gulley
- 0000 0004 1936 8075grid.48336.3aNational Cancer Institute, National Institutes of Health Bethesda USA
| | | | - Robert M Hoffman
- 0000 0001 2107 4242grid.266100.3UC, San Diego San Diego USA
- 0000 0004 0461 1271grid.417448.aAntiCancer Inc. San Diego USA
| | - Balveen Kaur
- 0000000121548364grid.55460.32University of Texas Austin USA
| | - Ke Liu
- 0000 0001 2243 3366grid.417587.8Center for Biologics Evaluation and ResearchUS Food and Drug Administration Silver Spring USA
| | | | - Ariel E Marciscano
- 0000 0004 1936 8075grid.48336.3aNational Cancer Institute, National Institutes of Health Bethesda USA
| | | | - Sheryl Ruppel
- 0000 0004 4665 8158grid.419407.fLeidos Biomedical Research, Inc. Frederick USA
| | - Daniel A Saltzman
- 0000000419368657grid.17635.36University of Minnesota Minneapolis USA
| | | | - Steve Thorne
- 0000 0004 1936 9000grid.21925.3dUniversity of Pittsburgh Pittsburgh USA
| | - Richard G Vile
- 0000 0004 0459 167Xgrid.66875.3aMayo Clinic Rochester USA
| | | | - Shibin Zhou
- 0000 0001 2171 9311grid.21107.35Johns Hopkins University Baltimore USA
| | - Grant McFadden
- 0000 0001 2151 2636grid.215654.1Center for Immunotherapy, Vaccines and Virotherapy , Biodesign InstituteArizona State University 727 E Tyler Street, Room A330E 85281 Tempe AZ USA
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15
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Immunohistochemical Characterization of Immune Cell Infiltration in Feline Glioma. J Comp Pathol 2018; 160:15-22. [DOI: 10.1016/j.jcpa.2018.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 01/16/2018] [Accepted: 02/22/2018] [Indexed: 12/15/2022]
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16
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Immunotherapy with subcutaneous immunogenic autologous tumor lysate increases murine glioblastoma survival. Sci Rep 2017; 7:13902. [PMID: 29066810 PMCID: PMC5654749 DOI: 10.1038/s41598-017-12584-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 08/08/2017] [Indexed: 02/06/2023] Open
Abstract
Immunotherapeutic strategies for glioblastoma, the most frequent malignant primary brain tumor, aim to improve its disastrous consequences. On top of the standard treatment, one strategy uses T cell activation by autologous dendritic cells (DC) ex vivo loaded with tumor lysate to attack remaining cancer cells. Wondering whether 'targeting' in vivo DCs could replace these ex vivo ones, immunogenic autologous tumor lysate was used to treat glioma-inoculated mice in the absence of ex vivo loaded DCs. Potential immune mechanisms were studied in two orthotopic, immunocompetent murine glioma models. Pre-tumoral subcutaneous lysate treatment resulted in a survival benefit comparable to subcutaneous DC therapy. Focussing on the immune response, glioma T cell infiltration was observed in parallel with decreased amounts of regulatory T cells. Moreover, these results were accompanied by the presence of strong tumor-specific immunological memory, shown by complete survival of a second glioblastoma tumor, inoculated 100 days after the first one. Finally, in combination with temozolomide, survival of established glioma in mice could be increased. Our results show the potential of immunogenic autologous tumor lysate used to treat murine glioblastoma, which will be worthwhile to study in clinical trials as it has potential as a cost-efficient adjuvant treatment strategy for gliomas.
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17
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Garcia PA, Kos B, Rossmeisl JH, Pavliha D, Miklavčič D, Davalos RV. Predictive therapeutic planning for irreversible electroporation treatment of spontaneous malignant glioma. Med Phys 2017; 44:4968-4980. [DOI: 10.1002/mp.12401] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 04/14/2017] [Accepted: 05/07/2017] [Indexed: 12/18/2022] Open
Affiliation(s)
- Paulo A. Garcia
- School of Biomedical Engineering and Sciences Virginia Tech – Wake Forest University Blacksburg VA 24061 USA
- Laboratory for Energy and Microsystems Innovation Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge MA 02142 USA
| | - Bor Kos
- Faculty of Electrical Engineering University of Ljubljana Trzaska 25 1000 Ljubljana Slovenia
| | - John H. Rossmeisl
- School of Biomedical Engineering and Sciences Virginia Tech – Wake Forest University Blacksburg VA 24061 USA
- Department of Small Animal Clinical Sciences Virginia‐Maryland Regional College of Veterinary Medicine Blacksburg VA 24060 USA
- Veterinary and Comparative Neuro‐oncology LaboratoryVirginia‐Maryland Regional College of Veterinary Medicine Blacksburg VA 24060 USA
| | - Denis Pavliha
- Faculty of Electrical Engineering University of Ljubljana Trzaska 25 1000 Ljubljana Slovenia
| | - Damijan Miklavčič
- Faculty of Electrical Engineering University of Ljubljana Trzaska 25 1000 Ljubljana Slovenia
| | - Rafael V. Davalos
- School of Biomedical Engineering and Sciences Virginia Tech – Wake Forest University Blacksburg VA 24061 USA
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18
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Fraser AR, Bacci B, le Chevoir MA, Long SN. Epidermal Growth Factor Receptor and Ki-67 Expression in Canine Gliomas. Vet Pathol 2016; 53:1131-1137. [PMID: 27154542 DOI: 10.1177/0300985816644301] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Novel therapies, including molecular targeted therapies, are being developed for the treatment of human gliomas. To use such therapies for canine gliomas, more complete characterization of molecular targets is required. Epidermal growth factor receptor (EGFR) is one such therapeutic target used in human glioma trials, and the Ki-67 labeling index (LI) is a marker of proliferation and a prognostic indicator. The objectives of this cross-sectional study were to evaluate the expression of EGFR and Ki-67 in canine gliomas and to determine if immunopositivity is associated with tumor type and histologic grade. Thirty-one formalin-fixed, paraffin-embedded canine gliomas were evaluated for EGFR and Ki-67 expression by immunohistochemistry. EGFR immunopositivity was evaluated using a semi-quantitative score and the Ki-67 LI calculated based on the percentage of positive cells. EGFR and Ki-67 expression were identified in 16 of 31 (52%) and 28 of 31 (90%) tumors, respectively. EGFR expression was significantly greater in high-grade tumors compared with low-grade tumors (P = .04) and was significantly greater in gliomatosis cerebri compared with oligodendroglioma (P = .002), astrocytoma (P = .01), and oligoastrocytoma (P = .04). The Ki-67 LI was significantly greater in high-grade tumors compared with low grade tumors (P = .02); the median Ki-67 LI was 2.3% (range, 0%-17.6%) for low-grade tumors and 9.3% (range, 1.7%-41.0%) for high-grade tumors. A significant moderate correlation was identified between EGFR immunopositivity and Ki-67 LI (r = 0.47, P = .007). Overall, EGFR may be a suitable therapeutic target for some canine gliomas, particularly gliomatosis cerebri.
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Affiliation(s)
- A R Fraser
- Translational Research and Animal Clinical Trial Studies Group, Section of Veterinary Neurology and Neurosurgery, Faculty of Veterinary and Agricultural Science, The University of Melbourne, Victoria, Australia Anderson Moores Veterinary Specialists, The Granary, Bunstead Barns, Poles Lane, Hursley, Winchester, Hampshire, United Kingdom
| | - B Bacci
- Department of Anatomic Pathology, Faculty of Veterinary and Agricultural Science, The University of Melbourne, Victoria, Australia School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - M A le Chevoir
- Translational Research and Animal Clinical Trial Studies Group, Section of Veterinary Neurology and Neurosurgery, Faculty of Veterinary and Agricultural Science, The University of Melbourne, Victoria, Australia
| | - S N Long
- Translational Research and Animal Clinical Trial Studies Group, Section of Veterinary Neurology and Neurosurgery, Faculty of Veterinary and Agricultural Science, The University of Melbourne, Victoria, Australia
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19
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Schiffman JD, Breen M. Comparative oncology: what dogs and other species can teach us about humans with cancer. Philos Trans R Soc Lond B Biol Sci 2016; 370:rstb.2014.0231. [PMID: 26056372 DOI: 10.1098/rstb.2014.0231] [Citation(s) in RCA: 237] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Over 1.66 million humans (approx. 500/100,000 population rate) and over 4.2 million dogs (approx. 5300/100,000 population rate) are diagnosed with cancer annually in the USA. The interdisciplinary field of comparative oncology offers a unique and strong opportunity to learn more about universal cancer risk and development through epidemiology, genetic and genomic investigations. Working across species, researchers from human and veterinary medicine can combine scientific findings to understand more quickly the origins of cancer and translate these findings to novel therapies to benefit both human and animals. This review begins with the genetic origins of canines and their advantage in cancer research. We next focus on recent findings in comparative oncology related to inherited, or genetic, risk for tumour development. We then detail the somatic, or genomic, changes within tumours and the similarities between species. The shared cancers between humans and dogs that we discuss include sarcoma (osteosarcoma, soft tissue sarcoma, histiocytic sarcoma, hemangiosarcoma), haematological malignancies (lymphoma, leukaemia), bladder cancer, intracranial neoplasms (meningioma, glioma) and melanoma. Tumour risk in other animal species is also briefly discussed. As the field of genomics advances, we predict that comparative oncology will continue to benefit both humans and the animals that live among us.
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Affiliation(s)
- Joshua D Schiffman
- Department of Pediatrics and Oncological Sciences, Primary Children's Hospital, Intermountain Healthcare, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Matthew Breen
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, Center for Comparative Medicine and Translational Research, Center for Human Health and the Environment, Cancer Genetics, UNC Lineberger Comprehensive Cancer Center, North Carolina State University, Raleigh, NC, USA
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20
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MacDiarmid JA, Langova V, Bailey D, Pattison ST, Pattison SL, Christensen N, Armstrong LR, Brahmbhatt VN, Smolarczyk K, Harrison MT, Costa M, Mugridge NB, Sedliarou I, Grimes NA, Kiss DL, Stillman B, Hann CL, Gallia GL, Graham RM, Brahmbhatt H. Targeted Doxorubicin Delivery to Brain Tumors via Minicells: Proof of Principle Using Dogs with Spontaneously Occurring Tumors as a Model. PLoS One 2016; 11:e0151832. [PMID: 27050167 PMCID: PMC4822833 DOI: 10.1371/journal.pone.0151832] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 03/05/2016] [Indexed: 12/29/2022] Open
Abstract
Background Cytotoxic chemotherapy can be very effective for the treatment of cancer but toxicity on normal tissues often limits patient tolerance and often causes long-term adverse effects. The objective of this study was to assist in the preclinical development of using modified, non-living bacterially-derived minicells to deliver the potent chemotherapeutic doxorubicin via epidermal growth factor receptor (EGFR) targeting. Specifically, this study sought to evaluate the safety and efficacy of EGFR targeted, doxorubicin loaded minicells (designated EGFRminicellsDox) to deliver doxorubicin to spontaneous brain tumors in 17 companion dogs; a comparative oncology model of human brain cancers. Methodology/Principle Findings EGFRminicellsDox were administered weekly via intravenous injection to 17 dogs with late-stage brain cancers. Biodistribution was assessed using single-photon emission computed tomography (SPECT) and magnetic resonance imaging (MRI). Anti-tumor response was determined using MRI, and blood samples were subject to toxicology (hematology, biochemistry) and inflammatory marker analysis. Targeted, doxorubicin-loaded minicells rapidly localized to the core of brain tumors. Complete resolution or marked tumor regression (>90% reduction in tumor volume) were observed in 23.53% of the cohort, with lasting anti-tumor responses characterized by remission in three dogs for more than two years. The median overall survival was 264 days (range 49 to 973). No adverse clinical, hematological or biochemical effects were observed with repeated administration of EGFRminicellsDox (30 to 98 doses administered in 10 of the 17 dogs). Conclusions/Significance Targeted minicells loaded with doxorubicin were safely administered to dogs with late stage brain cancer and clinical activity was observed. These findings demonstrate the strong potential for clinical applications of targeted, doxorubicin-loaded minicells for the effective treatment of patients with brain cancer. On this basis, we have designed a Phase 1 clinical study of EGFR-targeted, doxorubicin-loaded minicells for effective treatment of human patients with recurrent glioblastoma.
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Affiliation(s)
| | - Veronika Langova
- Small Animal Specialist Hospital, Sydney, New South Wales, Australia
| | - Dale Bailey
- Department of Nuclear Medicine, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Scott T. Pattison
- Cancer Therapeutics, EnGeneIC Pty Ltd, Sydney, New South Wales, Australia
| | - Stacey L. Pattison
- Cancer Therapeutics, EnGeneIC Pty Ltd, Sydney, New South Wales, Australia
| | - Neil Christensen
- Small Animal Specialist Hospital, Sydney, New South Wales, Australia
| | - Luke R. Armstrong
- Cancer Therapeutics, EnGeneIC Pty Ltd, Sydney, New South Wales, Australia
| | | | | | | | - Marylia Costa
- Cancer Therapeutics, EnGeneIC Pty Ltd, Sydney, New South Wales, Australia
| | - Nancy B. Mugridge
- Cancer Therapeutics, EnGeneIC Pty Ltd, Sydney, New South Wales, Australia
| | - Ilya Sedliarou
- Cancer Therapeutics, EnGeneIC Pty Ltd, Sydney, New South Wales, Australia
| | - Nicholas A. Grimes
- Cancer Therapeutics, EnGeneIC Pty Ltd, Sydney, New South Wales, Australia
| | - Debra L. Kiss
- Cancer Therapeutics, EnGeneIC Pty Ltd, Sydney, New South Wales, Australia
| | - Bruce Stillman
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, United States of America
| | - Christine L. Hann
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Gary L. Gallia
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Robert M. Graham
- Victor Chang Cardiac Research Institute, Sydney, New South Wales, Australia
- University of New South Wales, Sydney, New South Wales, Australia
| | - Himanshu Brahmbhatt
- Cancer Therapeutics, EnGeneIC Pty Ltd, Sydney, New South Wales, Australia
- * E-mail:
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21
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Regan D, Guth A, Coy J, Dow S. Cancer immunotherapy in veterinary medicine: Current options and new developments. Vet J 2015; 207:20-28. [PMID: 26545847 DOI: 10.1016/j.tvjl.2015.10.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 09/24/2015] [Accepted: 10/04/2015] [Indexed: 12/12/2022]
Abstract
Excitement in the field of tumor immunotherapy is being driven by several remarkable breakthroughs in recent years. This review will cover recent advances in cancer immunotherapy, including the use of T cell checkpoint inhibitors, engineered T cells, cancer vaccines, and anti-B cell and T cell antibodies. Inhibition of T cell checkpoint molecules such as PD-1 and CTLA-4 using monoclonal antibodies has achieved notable success against advanced tumors in humans, including melanoma, renal cell carcinoma, and non-small cell lung cancer. Therapy with engineered T cells has also demonstrated remarkable tumor control and regression in human trials. Autologous cancer vaccines have recently demonstrated impressive prolongation of disease-free intervals and survival times in dogs with lymphoma. In addition, caninized monoclonal antibodies targeting CD20 and CD52 just recently received either full (CD20) or conditional (CD52) licensing by the United States Department of Agriculture for clinical use in the treatment of canine B-cell and T-cell lymphomas, respectively. Thus, immunotherapy for cancer is rapidly moving to the forefront of cancer treatment options in veterinary medicine as well as human medicine.
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Affiliation(s)
- Daniel Regan
- Animal Cancer Center, Department of Clinical Sciences, Colorado State University, Ft. Collins, CO 80523, USA
| | - Amanda Guth
- Animal Cancer Center, Department of Clinical Sciences, Colorado State University, Ft. Collins, CO 80523, USA
| | - Jonathan Coy
- Animal Cancer Center, Department of Clinical Sciences, Colorado State University, Ft. Collins, CO 80523, USA
| | - Steven Dow
- Animal Cancer Center, Department of Clinical Sciences, Colorado State University, Ft. Collins, CO 80523, USA.
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22
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MacNeill AL. On the potential of oncolytic virotherapy for the treatment of canine cancers. Oncolytic Virother 2015; 4:95-107. [PMID: 27512674 PMCID: PMC4918385 DOI: 10.2147/ov.s66358] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Over 6 million dogs are diagnosed with cancer in the USA each year. Treatment options for many of these patients are limited. It is important that the veterinary and scientific communities begin to explore novel treatment protocols for dogs with cancer. Oncolytic viral therapy is a promising treatment option that may prove to be relatively inexpensive and effective against several types of cancer. The efficacy of oncolytic virus therapies has been clearly demonstrated in murine cancer models, but the positive outcomes observed in mice are not always seen in human cancer patients. These therapies should be thoroughly evaluated in dogs with spontaneously arising cancers to provide needed information about the potential effectiveness of virus treatment for human cancers and to promote the health of our companion animals. This article provides a review of the results of oncolytic virus treatment of canine cancers.
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Affiliation(s)
- Amy L MacNeill
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
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23
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Dendritic cell immunotherapy for brain tumors. J Neurooncol 2015; 123:425-32. [PMID: 26037466 DOI: 10.1007/s11060-015-1830-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 05/25/2015] [Indexed: 12/15/2022]
Abstract
Glioblastomas are characterized by immunosuppression, rapid proliferation, angiogenesis, and invasion into the surrounding brain parenchyma. Limitations in current therapeutic approaches have spurred the development of personalized, patient-specific treatments. Among these, active immunotherapy has emerged as a viable option for glioma treatment. The ability to generate an immune response utilizing patient-derived dendritic cells (DCs) (professional antigen-presenting cells) is especially attractive. This approach to glioma treatment allows for the immunologic targeting and destruction of malignant cells. Data acquired in multiple pre-clinical models and clinical trials have shown significant responses and prolonged survival. Here we provide an overview of the current status of DC vaccination for the treatment of gliomas.
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Hicks J, Platt S, Kent M, Haley A. Canine brain tumours: a model for the human disease? Vet Comp Oncol 2015; 15:252-272. [PMID: 25988678 DOI: 10.1111/vco.12152] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 04/04/2015] [Accepted: 04/06/2015] [Indexed: 01/10/2023]
Abstract
Canine brain tumours are becoming established as naturally occurring models of disease to advance diagnostic and therapeutic understanding successfully. The size and structure of the dog's brain, histopathology and molecular characteristics of canine brain tumours, as well as the presence of an intact immune system, all support the potential success of this model. The limited success of current therapeutic regimens such as surgery and radiation for dogs with intracranial tumours means that there can be tremendous mutual benefit from collaboration with our human counterparts resulting in the development of new treatments. The similarities and differences between the canine and human diseases are described in this article, emphasizing both the importance and limitations of canines in brain tumour research. Recent clinical veterinary therapeutic trials are also described to demonstrate the areas of research in which canines have already been utilized and to highlight the important potential benefits of translational research to companion dogs.
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Affiliation(s)
- J Hicks
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - S Platt
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - M Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - A Haley
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
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25
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Clinical trials of immunogene therapy for spontaneous tumors in companion animals. ScientificWorldJournal 2014; 2014:718520. [PMID: 25506617 PMCID: PMC4251357 DOI: 10.1155/2014/718520] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 10/02/2014] [Indexed: 12/23/2022] Open
Abstract
Despite the important progress obtained in the treatment of some pets' malignancies, new treatments need to be developed. Being critical in cancer control and progression, the immune system's appropriate modulation may provide effective therapeutic options. In this review we summarize the outcomes of published immunogene therapy veterinary clinical trials reported by many research centers. A variety of tumors such as canine melanoma, soft tissue sarcomas, osteosarcoma and lymphoma, feline fibrosarcoma, and equine melanoma were subjected to different treatment approaches. Both viral and mainly nonviral vectors were used to deliver gene products as cytokines, xenogeneic tumor associated antigens, specific ligands, and proapoptotic regulatory factors. In some cases autologous, allogenic, or xenogeneic transgenic cytokine producing cells were assayed. In general terms, minor or no adverse collateral effects appeared during this kind of therapies and treated patients usually displayed a better course of the disease (longer survival, delayed or suppressed recurrence or metastatic spread, and improvement of the quality of life). This suggests the utility of these methodologies as standard adjuvant treatments. The encouraging outcomes obtained in companion animals support their ready application in veterinary clinical oncology and serve as preclinical proof of concept and safety assay for future human gene therapy trials.
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Rossmeisl JH. New treatment modalities for brain tumors in dogs and cats. Vet Clin North Am Small Anim Pract 2014; 44:1013-38. [PMID: 25441624 DOI: 10.1016/j.cvsm.2014.07.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Despite advancements in standard therapies, intracranial tumors remain a significant source of morbidity and mortality in veterinary and human medicine. Several newer approaches are gaining more widespread acceptance or are currently being prepared for translation from experimental to routine therapeutic use. Clinical trials in dogs with spontaneous brain tumors have contributed to the development and human translation of several novel therapeutic brain tumor approaches.
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Affiliation(s)
- John H Rossmeisl
- Neurology and Neurosurgery, Department of Small Animal Clinical Sciences, VA-MD Regional College of Veterinary Medicine, Virginia Tech, 215 Duckpond Drive, Mail Code 0442, Blacksburg, VA 24061, USA.
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Dickinson P. Advances in diagnostic and treatment modalities for intracranial tumors. J Vet Intern Med 2014; 28:1165-85. [PMID: 24814688 PMCID: PMC4857954 DOI: 10.1111/jvim.12370] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 02/24/2014] [Accepted: 03/25/2014] [Indexed: 12/23/2022] Open
Abstract
Intracranial neoplasia is a common clinical condition in domestic companion animals, particularly in dogs. Application of advances in standard diagnostic and therapeutic modalities together with a broad interest in the development of novel translational therapeutic strategies in dogs has resulted in clinically relevant improvements in outcome for many canine patients. This review highlights the status of current diagnostic and therapeutic approaches to intracranial neoplasia and areas of novel treatment currently in development.
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Affiliation(s)
- P.J. Dickinson
- Department of Surgical and Radiological SciencesSchool of Veterinary MedicineUniversity of California DavisDavisCA
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28
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Lowenstein PR, Castro MG. The value of EGFRvIII as the target for glioma vaccines. Am Soc Clin Oncol Educ Book 2014:42-50. [PMID: 24857059 DOI: 10.14694/edbook_am.2014.34.42] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Malignant brain tumors continue to be rapidly progressive and resistant to most treatments. Even with state-of-the-art standard of care (surgery, chemotherapy, and radiotherapy) long-term survival in the last 80 years improved from 6 to 15 months. Improved imaging has also likely contributed to prolonged survival. Immunotherapy for cancer dates back to publications from 1742. The central idea is that the immune system can detect and eliminate foreign antigens, either from infectious agents or tumors, and thus could be therapeutic in brain tumors. Recent introduction of immune modulators of cytotoxic T-lymphocyte antigen (CTLA)-4 and programmed cell death 1/programmed cell death 1 ligand (PD-1/PDL1) add much excitement to this field. For brain tumors, there are several ongoing phase I and III trials to determine whether any of the current immunotherapy approaches can demonstrate activity in randomized, controlled double-blinded trials-with ongoing and historical trials presented in tables within the manuscript. Immunotherapy has explored the use of various types of antigens (obtained either from homogenates of patients' tumors or synthetically produced), and various immunization procedures and adjuvants. Glioma antigens have also been isolated from the patients' own tumor, then produced in vitro (for example the glioma antigen EGFRvIII), and used to immunize patients directly, or with carriers such as dendritic cells with or without additional adjuvants. Several of these practical approaches are currently in phase III trials. Remaining challenges are how to increase the percentage of complete responses and response duration, and the enigmatic absence of an almost total lack of adverse brain inflammation following immunization of brain tumor patients, as has been observed following immunization against brain antigens in other diseases, such as Alzheimer's Disease.
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Affiliation(s)
- Pedro R Lowenstein
- From the Department of Neurosurgery and Cell and Developmental Biology, Graduate Program in Immunology, and Graduate Program in Cancer Biology, The University of Michigan Comprehensive Cancer Center, The University of Michigan School of Medicine, Ann Arbor, MI
| | - Maria G Castro
- From the Department of Neurosurgery and Cell and Developmental Biology, Graduate Program in Immunology, and Graduate Program in Cancer Biology, The University of Michigan Comprehensive Cancer Center, The University of Michigan School of Medicine, Ann Arbor, MI
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29
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Gentschev I, Patil SS, Petrov I, Cappello J, Adelfinger M, Szalay AA. Oncolytic virotherapy of canine and feline cancer. Viruses 2014; 6:2122-37. [PMID: 24841386 PMCID: PMC4036544 DOI: 10.3390/v6052122] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/22/2014] [Accepted: 04/30/2014] [Indexed: 12/13/2022] Open
Abstract
Cancer is the leading cause of disease-related death in companion animals such as dogs and cats. Despite recent progress in the diagnosis and treatment of advanced canine and feline cancer, overall patient treatment outcome has not been substantially improved. Virotherapy using oncolytic viruses is one promising new strategy for cancer therapy. Oncolytic viruses (OVs) preferentially infect and lyse cancer cells, without causing excessive damage to surrounding healthy tissue, and initiate tumor-specific immunity. The current review describes the use of different oncolytic viruses for cancer therapy and their application to canine and feline cancer.
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Affiliation(s)
- Ivaylo Gentschev
- Department of Biochemistry, University of Wuerzburg, Wuerzburg D-97074, Germany.
| | - Sandeep S Patil
- Department of Biochemistry, University of Wuerzburg, Wuerzburg D-97074, Germany.
| | - Ivan Petrov
- Department of Biochemistry, University of Wuerzburg, Wuerzburg D-97074, Germany.
| | - Joseph Cappello
- Genelux Corporation, San Diego Science Center, San Diego, CA 92109, USA.
| | - Marion Adelfinger
- Department of Biochemistry, University of Wuerzburg, Wuerzburg D-97074, Germany.
| | - Aladar A Szalay
- Department of Biochemistry, University of Wuerzburg, Wuerzburg D-97074, Germany.
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Olin MR, Pluhar GE, Andersen BM, Shaver R, Waldron NN, Moertel CL. Victory and defeat in the induction of a therapeutic response through vaccine therapy for human and canine brain tumors: a review of the state of the art. Crit Rev Immunol 2014; 34:399-432. [PMID: 25404047 PMCID: PMC4485925 DOI: 10.1615/critrevimmunol.2014011577] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Anti-tumor immunotherapy using tumor lysate-based vaccines has made great advances over recent decades. Cancer vaccines aim to elicit adaptive immune responses through various pathways by providing tumor and tumor-associated antigens with an immune stimulant or adjuvant. These anti-tumor vaccines are therefore developed as personalized treatments. Utilizing tumors as a source of vaccine antigens in immunotherapy has demonstrated promising results with minimal toxicity. However, to date, researchers have failed to overcome the overpowering immune suppressive effects within the tumor microenvironment. Immune suppression occurs naturally via multiple mechanisms. These mechanisms serve an important homeostatic role restoring a normal tissue microenvironment following an inflammatory response. Due to these suppressive mechanisms and the inherent heterogeneity of tumors, it is imperative to then elicit and maintain a specific tumoricidal response if vaccine therapy or some other combination of reagents is chosen. In this review, we focus on the historical use of tumors as a source of antigens to elicit a tumoricidal response and the limitations encountered that prevent greater success in immunotherapy. We describe the advantages and disadvantages of various vaccines and their ineffectiveness due to tumor-induced immune suppression.
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Affiliation(s)
- Michael R. Olin
- Department of Pediatrics. University of Minnesota, Minneapolis, MN 55445
| | - G. Elizabeth Pluhar
- Department of Veterinary Medicine, College of Veterinary Medicine. University of Minnesota, St. Paul, MN 55108
| | - Brian M. Andersen
- Department of Pediatrics. University of Minnesota, Minneapolis, MN 55445
| | - Rob Shaver
- Department of Pediatrics. University of Minnesota, Minneapolis, MN 55445
| | - Nate N. Waldron
- Department of Pediatrics. University of Minnesota, Minneapolis, MN 55445
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31
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Debinski W, Dickinson P, Rossmeisl JH, Robertson J, Gibo DM. New agents for targeting of IL-13RA2 expressed in primary human and canine brain tumors. PLoS One 2013; 8:e77719. [PMID: 24147065 PMCID: PMC3797726 DOI: 10.1371/journal.pone.0077719] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 09/11/2013] [Indexed: 11/20/2022] Open
Abstract
Interleukin 13 receptor alpha 2 (IL-13RA2) is over-expressed in a vast majority of human patients with high-grade astrocytomas like glioblastoma. Spontaneous astrocytomas in dogs resemble human disease and have been proposed as translational model system for investigation of novel therapeutic strategies for brain tumors. We have generated reagents for both detection and therapeutic targeting of IL-13RA2 in human and canine brain tumors. Peptides from three different regions of IL-13RA2 with 100% sequence identity between human and canine receptors were used as immunogens for generation of monoclonal antibodies. Recombinant canine mutant IL-13 (canIL-13.E13K) and canIL-13.E13K based cytotoxin were also produced. The antibodies were examined for their immunoreactivities in western blots, immunohistochemistry, immunofluorescence and cell binding assays using human and canine tumor specimen sections, tissue lysates and established cell lines; the cytotoxin was tested for specific cell killing. Several isolated MAbs were immunoreactive to IL-13RA2 in western blots of cell and tissue lysates from glioblastomas from both human and canine patients. Human and canine astrocytomas and oligodendrogliomas were also positive for IL-13RA2 to various degrees. Interestingly, both human and canine meningiomas also exhibited strong reactivity. Normal human and canine brain samples were virtually negative for IL-13RA2 using the newly generated MAbs. MAb 1E10B9 uniquely worked on tissue specimens and western blots, bound live cells and was internalized in GBM cells over-expressing IL-13RA2. The canIL-13.E13K cytotoxin was very potent and specific in killing canine GBM cell lines. Thus, we have obtained several monoclonal antibodies against IL-13RA2 cross-reacting with human and canine receptors. In addition to GBM, other brain tumors, such as high grade oligodendrogliomas, meningiomas and canine choroid plexus papillomas, appear to express the receptor at high levels and thus may be appropriate candidates for IL-13RA2-targeted imaging/therapies. Canine spontaneous primary brain tumors represent an excellent translational model for human counterparts.
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Affiliation(s)
- Waldemar Debinski
- The Brain Tumor Center of Excellence, Thomas K. Hearn Brain Tumor Research Center, Departments of Neurosurgery, Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Peter Dickinson
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California at Davis, Davis, California, United States of America
| | - John H. Rossmeisl
- Department of Small Animal Clinical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia, United States of America
| | - John Robertson
- Department of Small Animal Clinical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia, United States of America
| | - Denise M. Gibo
- The Brain Tumor Center of Excellence, Thomas K. Hearn Brain Tumor Research Center, Departments of Neurosurgery, Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
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32
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Denies S, Sanders NN. Recent progress in canine tumor vaccination: potential applications for human tumor vaccines. Expert Rev Vaccines 2013; 11:1375-86. [PMID: 23249236 DOI: 10.1586/erv.12.104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tumor vaccination holds great promise for the treatment of cancer and research concerning tumor vaccination in dogs is of great interest for veterinary as well as human medicine. Indeed, cancer is the leading cause of death in adult dogs and companion animals are acknowledged as excellent preclinical models for human oncology. The license of the veterinary melanoma vaccine (Oncept™) and Provenge® for the treatment of prostate cancer in men established tumor vaccination as a valid treatment modality for cancer. Although the results with this and other vaccines are promising, there are still some hurdles to overcome. In this article, preclinical and clinical trials with tumor vaccines in dogs are discussed, as well as the surplus value of canine cancer patients for human medicine.
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Affiliation(s)
- Sofie Denies
- Laboratory of Gene Therapy, Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, B-9820 Merelbeke, Belgium
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33
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Andersen BM, Pluhar GE, Seiler CE, Goulart MR, SantaCruz KS, Schutten MM, Meints JP, O'Sullivan MG, Bentley RT, Packer RA, Thomovsky SA, Chen AV, Faissler D, Chen W, Hunt MA, Olin MR, Ohlfest JR. Vaccination for invasive canine meningioma induces in situ production of antibodies capable of antibody-dependent cell-mediated cytotoxicity. Cancer Res 2013; 73:2987-97. [PMID: 23471847 PMCID: PMC3655124 DOI: 10.1158/0008-5472.can-12-3366] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Malignant and atypical meningiomas are resistant to standard therapies and associated with poor prognosis. Despite progress in the treatment of other tumors with therapeutic vaccines, this approach has not been tested preclinically or clinically in these tumors. Spontaneous canine meningioma is a clinically meaningful but underutilized model for preclinical testing of novel strategies for aggressive human meningioma. We treated 11 meningioma-bearing dogs with surgery and vaccine immunotherapy consisting of autologous tumor cell lysate combined with toll-like receptor ligands. Therapy was well tolerated, and only one dog had tumor growth that required intervention, with a mean follow up of 585 days. IFN-γ-elaborating T cells were detected in the peripheral blood of 2 cases, but vaccine-induced tumor-reactive antibody responses developed in all dogs. Antibody responses were polyclonal, recognizing both intracellular and cell surface antigens, and HSP60 was identified as one common antigen. Tumor-reactive antibodies bound allogeneic canine and human meningiomas, showing common antigens across breed and species. Histologic analysis revealed robust infiltration of antibody-secreting plasma cells into the brain around the tumor in posttreatment compared with pretreatment samples. Tumor-reactive antibodies were capable of inducing antibody-dependent cell-mediated cytotoxicity to autologous and allogeneic tumor cells. These data show the feasibility and immunologic efficacy of vaccine immunotherapy for a large animal model of human meningioma and warrant further development toward human trials.
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Affiliation(s)
- Brian M Andersen
- Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA.
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34
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Bovenberg MSS, Degeling MH, Tannous BA. Cell-based immunotherapy against gliomas: from bench to bedside. Mol Ther 2013; 21:1297-305. [PMID: 23648695 DOI: 10.1038/mt.2013.80] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 03/17/2013] [Indexed: 12/19/2022] Open
Abstract
Glioblastoma (GBM) comprises 51% of all gliomas and is the most malignant form of brain tumors with a median survival of 18-21 months. Standard-of-care treatment includes maximal surgical resection of the tumor mass in combination with radiation and chemotherapy. However, as the poor survival rate indicates, these treatments have not been effective in preventing disease progression. Cellular immunotherapy is currently being explored as therapeutic approach to treat malignant brain tumors. In this review, we discuss advances in active, passive, and vaccine-based immunotherapeutic strategies for gliomas both at the bench and in the clinic.
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Affiliation(s)
- M Sarah S Bovenberg
- Department of Neurology, Experimental Therapeutics and Molecular Imaging Laboratory, Neuroscience Center, Massachusetts General Hospital, Boston, Massachusetts, USA
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35
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Puntel M, A K M GM, Farrokhi C, Vanderveen N, Paran C, Appelhans A, Kroeger KM, Salem A, Lacayo L, Pechnick RN, Kelson KR, Kaur S, Kennedy S, Palmer D, Ng P, Liu C, Krasinkiewicz J, Lowenstein PR, Castro MG. Safety profile, efficacy, and biodistribution of a bicistronic high-capacity adenovirus vector encoding a combined immunostimulation and cytotoxic gene therapy as a prelude to a phase I clinical trial for glioblastoma. Toxicol Appl Pharmacol 2013; 268:318-30. [PMID: 23403069 PMCID: PMC3641940 DOI: 10.1016/j.taap.2013.02.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 01/31/2013] [Accepted: 02/01/2013] [Indexed: 12/12/2022]
Abstract
Adenoviral vectors (Ads) are promising gene delivery vehicles due to their high transduction efficiency; however, their clinical usefulness has been hampered by their immunogenicity and the presence of anti-Ad immunity in humans. We reported the efficacy of a gene therapy approach for glioma consisting of intratumoral injection of Ads encoding conditionally cytotoxic herpes simplex type 1 thymidine kinase (Ad-TK) and the immunostimulatory cytokine fms-like tyrosine kinase ligand 3 (Ad-Flt3L). Herein, we report the biodistribution, efficacy, and neurological and systemic effects of a bicistronic high-capacity Ad, i.e., HC-Ad-TK/TetOn-Flt3L. HC-Ads elicit sustained transgene expression, even in the presence of anti-Ad immunity, and can encode large therapeutic cassettes, including regulatory elements to enable turning gene expression "on" or "off" according to clinical need. The inclusion of two therapeutic transgenes within a single vector enables a reduction of the total vector load without adversely impacting efficacy. Because clinically the vectors will be delivered into the surgical cavity, normal regions of the brain parenchyma are likely to be transduced. Thus, we assessed any potential toxicities elicited by escalating doses of HC-Ad-TK/TetOn-Flt3L (1×10(8), 1×10(9), or 1×10(10) viral particles [vp]) delivered into the rat brain parenchyma. We assessed neuropathology, biodistribution, transgene expression, systemic toxicity, and behavioral impact at acute and chronic time points. The results indicate that doses up to 1×10(9) vp of HC-Ad-TK/TetOn-Flt3L can be safely delivered into the normal rat brain and underpin further developments for its implementation in a phase I clinical trial for glioma.
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Affiliation(s)
- Mariana Puntel
- Department of Neurosurgery, The University of Michigan School of Medicine, MSRB II, RM 4570C, 1150 West Medical Center Drive, Ann Arbor, MI 48109-5689, USA
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Abstract
The brain is in many ways an immunologically and pharmacologically privileged site. The blood-brain barrier (BBB) of the cerebrovascular endothelium and its participation in the complex structure of the neurovascular unit (NVU) restrict access of immune cells and immune mediators to the central nervous system (CNS). In pathologic conditions, very well-organized immunologic responses can develop within the CNS, raising important questions about the real nature and the intrinsic and extrinsic regulation of this immune privilege. We assess the interactions of immune cells and immune mediators with the BBB and NVU in neurologic disease, cerebrovascular disease, and intracerebral tumors. The goals of this review are to outline key scientific advances and the status of the science central to both the neuroinflammation and CNS barriers fields, and highlight the opportunities and priorities in advancing brain barriers research in the context of the larger immunology and neuroscience disciplines. This review article was developed from reports presented at the 2011 Annual Blood-Brain Barrier Consortium Meeting.
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White E, Bienemann A, Taylor H, Castrique E, Bunnun C, Wyatt M, Gill S. An evaluation of site-specific immune responses directed against first-generation adenoviral vectors administered by convection-enhanced delivery. J Gene Med 2011; 13:269-82. [PMID: 21544905 DOI: 10.1002/jgm.1567] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Direct adenoviral vector injections into the brain have been used in clinical trials to treat patients with high-grade gliomas. However, a recent phase 3 trial using first-generation vectors failed to demonstrate significant survival benefits. Malignant gliomas infiltrate extensively through the white matter, making them difficult to treat, and chemotherapy is at best partially effective. Convection enhanced delivery (CED) represents a rationale approach for achieving widespread targeting of infiltrating tumour cells. Previous studies have demonstrated that infusions of particle numbers above a threshold level [10(8) plaque-forming units (pfu)] are associated with a pronounced inflammatory response in rat grey matter, although no such comparisons have been made with CED infusions into the white matter. METHODS In the present study, we investigated the distribution and immune response after the administration of 10(7) and 10(9) pfu of a first-generation adenoviral vector (Ad.CMV.EGFP) by CED in both small and large animal models. RESULTS We show that Ad.CMV.EGFP can be efficiently distributed by CED over large volumes of brain. A threshold vector dose of between 10(7) and 10(9) pfu was seen in both rat striatum and white matter, above which transgene expression was lost at 30 days. Furthermore, all adenoviral infusions were associated with evidence of significant tissue damage, as demonstrated by loss of neurones and astrocytes or the presence of extensive astrocytosis. CONCLUSIONS These results indicate that CED is capable of mediating widespread adenoviral vector distribution, although these vectors are associated with significant tissue toxicity that may render their safe application in clinical trials unfeasible.
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Affiliation(s)
- Edward White
- Department of Neurosurgery, Frenchay Hospital, Bristol, UK
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38
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Castro MG, Candolfi M, Kroeger K, King GD, Curtin JF, Yagiz K, Mineharu Y, Assi H, Wibowo M, Ghulam Muhammad AKM, Foulad D, Puntel M, Lowenstein PR. Gene therapy and targeted toxins for glioma. Curr Gene Ther 2011; 11:155-80. [PMID: 21453286 DOI: 10.2174/156652311795684722] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Accepted: 03/08/2011] [Indexed: 12/12/2022]
Abstract
The most common primary brain tumor in adults is glioblastoma. These tumors are highly invasive and aggressive with a mean survival time of 15-18 months from diagnosis to death. Current treatment modalities are unable to significantly prolong survival in patients diagnosed with glioblastoma. As such, glioma is an attractive target for developing novel therapeutic approaches utilizing gene therapy. This review will examine the available preclinical models for glioma including xenographs, syngeneic and genetic models. Several promising therapeutic targets are currently being pursued in pre-clinical investigations. These targets will be reviewed by mechanism of action, i.e., conditional cytotoxic, targeted toxins, oncolytic viruses, tumor suppressors/oncogenes, and immune stimulatory approaches. Preclinical gene therapy paradigms aim to determine which strategies will provide rapid tumor regression and long-term protection from recurrence. While a wide range of potential targets are being investigated preclinically, only the most efficacious are further transitioned into clinical trial paradigms. Clinical trials reported to date are summarized including results from conditionally cytotoxic, targeted toxins, oncolytic viruses and oncogene targeting approaches. Clinical trial results have not been as robust as preclinical models predicted; this could be due to the limitations of the GBM models employed. Once this is addressed, and we develop effective gene therapies in models that better replicate the clinical scenario, gene therapy will provide a powerful approach to treat and manage brain tumors.
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Affiliation(s)
- Maria G Castro
- Gene Therapeutics Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA.
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39
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The function of dog models in developing gene therapy strategies for human health. Mamm Genome 2011; 22:476-85. [PMID: 21732191 DOI: 10.1007/s00335-011-9348-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 06/18/2011] [Indexed: 10/18/2022]
Abstract
The domestic dog is of great benefit to humankind, not only through companionship and working activities cultivated through domestication and selective breeding, but also as a model for biomedical research. Many single-gene traits have been well-characterized at the genomic level, and recent advances in whole-genome association studies will allow for better understanding of complex, multigenic hereditary diseases. Additionally, the dog serves as an invaluable large animal model for assessment of novel therapeutic agents. Thus, the dog has filled a crucial step in the translation of basic research to new treatment regimens for various human diseases. Four well-characterized diseases in canine models are discussed as they relate to other animal model availability, novel therapeutic approach, and extrapolation to human gene therapy trials.
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40
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van Putten EH, Dirven CM, van den Bent MJ, Lamfers ML. Sitimagene ceradenovec: a gene-based drug for the treatment of operable high-grade glioma. Future Oncol 2011; 6:1691-710. [PMID: 21142657 DOI: 10.2217/fon.10.134] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The field of gene therapy for malignant glioma has made important advances since the first gene transfer studies were performed 20 years ago. Multiple Phase I/II trials and two Phase III trials have been performed and have demonstrated the feasibility and safety of intratumoral vector delivery in the brain. Sitimagene ceradenovec is an adenoviral vector encoding the herpes simplex thymidine kinase gene, developed by Ark Therapeutics Group plc (UK and Finland) for the treatment of patients with operable high-grade glioma. In preclinical and Phase I/II clinical studies, sitimagene ceradenovec exhibited a significant increase in survival. Although the preliminary results of a Phase III clinical study demonstrated a significant positive effect of sitimagene ceradenovec treatment on time to reintervention or death when compared with standard care treatment (hazard ratio: 1.43; 95% CI: 1.06-1.93; p < 0.05), the European Committee for Medicinal Products for Human Use did not consider the data to provide sufficient evidence of clinical benefit. Further clinical evaluation, powered to demonstrate a benefit on a robust end point, is required. This article focuses on sitimagene ceradenovec and provides an overview of the developments in the field of gene therapy for malignant glioma.
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Affiliation(s)
- Erik Hp van Putten
- Department of Neurosurgery, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
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Lowenstein PR. Cancer vaccines in glioma: how to balance the challenges of small trials, efficiency, and potential adverse events. J Clin Oncol 2010; 28:4670-3. [PMID: 20921460 DOI: 10.1200/jco.2010.32.1117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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