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Paudel SN, Hutzen BJ, Miller KE, Garfinkle EAR, Chen CY, Wang PY, Glaspell AM, Currier MA, Ringwalt EM, Boon L, Mardis ER, Cairo MS, Ratner N, Dodd RD, Cassady KA, Cripe TP. Myelomodulatory treatments augment the therapeutic benefit of oncolytic viroimmunotherapy in murine models of malignant peripheral nerve sheath tumors. Front Immunol 2024; 15:1384623. [PMID: 39044819 PMCID: PMC11263800 DOI: 10.3389/fimmu.2024.1384623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Accepted: 06/10/2024] [Indexed: 07/25/2024] Open
Abstract
Introduction Malignant peripheral nerve sheath tumors (MPNST) pose a significant therapeutic challenge due to high recurrence rates after surgical resection and a largely ineffective response to traditional chemotherapy. An alternative treatment strategy is oncolytic viroimmunotherapy, which can elicit a durable and systemic antitumor immune response and is Food and Drug Administration (FDA)-approved for the treatment of melanoma. Unfortunately, only a subset of patients responds completely, underscoring the need to address barriers hindering viroimmunotherapy effectiveness. Methods Here we investigated the therapeutic utility of targeting key components of the MPNST immunosuppressive microenvironment to enhance viroimmunotherapy's antitumor efficacy in three murine models, one of which showed more immunogenic characteristics than the others. Results Myelomodulatory therapy with pexidartinib, a small molecule inhibitor of CSF1R tyrosine kinase, and the oncolytic herpes simplex virus T-VEC exhibited the most significant increase in median survival time in the highly immunogenic model. Additionally, targeting myeloid cells with the myelomodulatory therapy trabectedin, a small molecule activator of caspase-8 dependent apoptosis, augmented the survival benefit of T-VEC in a less immunogenic MPNST model. However, tumor regressions or shrinkages were not observed. Depletion experiments confirmed that the enhanced survival benefit relied on a T cell response. Furthermore, flow cytometry analysis following combination viroimmunotherapy revealed decreased M2 macrophages and myeloid-derived suppressor cells and increased tumor-specific gp70+ CD8 T cells within the tumor microenvironment. Discussion In summary, our findings provide compelling evidence for the potential to leverage viroimmunotherapy with myeloid cell targeting against MPNST and warrant further investigation.
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Affiliation(s)
- Siddhi N. Paudel
- Center for Childhood Cancer Research, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Brian J. Hutzen
- Center for Childhood Cancer Research, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Katherine E. Miller
- Institute for Genomic Medicine, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
- Department of Pediatrics, The Ohio State University Wexner College of Medicine, Columbus, OH, United States
| | - Elizabeth A. R. Garfinkle
- Institute for Genomic Medicine, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Chun-Yu Chen
- Center for Childhood Cancer Research, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Pin-Yi Wang
- Center for Childhood Cancer Research, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Andrea M. Glaspell
- Center for Childhood Cancer Research, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Mark A. Currier
- Center for Childhood Cancer Research, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Emily M. Ringwalt
- Center for Childhood Cancer Research, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | | | - Elaine R. Mardis
- Institute for Genomic Medicine, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
- Department of Pediatrics, The Ohio State University Wexner College of Medicine, Columbus, OH, United States
| | - Mitchell S. Cairo
- Department of Pediatrics, Medicine, Pathology, Microbiology and Immunology, and Cell Biology, New York Medical College, Valhalla, NY, United States
| | - Nancy Ratner
- Cancer and Blood Diseases Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
| | - Rebecca D. Dodd
- Department of Internal Medicine, Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, United States
| | - Kevin A. Cassady
- Center for Childhood Cancer Research, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
- Department of Pediatrics, The Ohio State University Wexner College of Medicine, Columbus, OH, United States
| | - Timothy P. Cripe
- Center for Childhood Cancer Research, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
- Department of Pediatrics, The Ohio State University Wexner College of Medicine, Columbus, OH, United States
- Division of Pediatric Hematology/Oncology/BMT, Nationwide Children’s Hospital, Columbus, OH, United States
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2
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Lu J, Long Y, Sun J, Gong L. Towards a comprehensive view of the herpes B virus. Front Immunol 2023; 14:1281384. [PMID: 38035092 PMCID: PMC10687423 DOI: 10.3389/fimmu.2023.1281384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
Herpes B virus is a biosafety level 4 pathogen and widespread in its natural host species, macaques. Although most infected monkeys show asymptomatic or mild symptoms, human infections with this virus can cause serious neurological symptoms or fatal encephalomyelitis with a high mortality rate. Herpes B virus can be latent in the sensory ganglia of monkeys and humans, often leading to missed diagnoses. Furthermore, the herpes B virus has extensive antigen crossover with HSV, SA8, and HVP-2, causing false-positive results frequently. Timely diagnosis, along with methods with sensitivity and specificity, are urgent for research on the herpes B virus. The lack of a clear understanding of the host invasion and life cycle of the herpes B virus has led to slow progress in the development of effective vaccines and drugs. This review discusses the research progress and problems of the epidemiology of herpes B virus, detection methods and therapy, hoping to inspire further investigation into important factors associated with transmission of herpes B virus in macaques and humans, and arouse the development of effective vaccines or drugs, to promote the establishment of specific pathogen-free (SPF) monkeys and protect humans to effectively avoid herpes B virus infection.
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Affiliation(s)
- Jiangling Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, China
| | - Yiru Long
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jianhua Sun
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, China
| | - Likun Gong
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, China
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3
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Hu M, Liao X, Tao Y, Chen Y. Advances in oncolytic herpes simplex virus and adenovirus therapy for recurrent glioma. Front Immunol 2023; 14:1285113. [PMID: 38022620 PMCID: PMC10652401 DOI: 10.3389/fimmu.2023.1285113] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023] Open
Abstract
Recurrent glioma treatment is challenging due to molecular heterogeneity and treatment resistance commonly observed in these tumors. Researchers are actively pursuing new therapeutic strategies. Oncolytic viruses have emerged as a promising option. Oncolytic viruses selectively replicate within tumor cells, destroying them and stimulating the immune system for an enhanced anticancer response. Among Oncolytic viruses investigated for recurrent gliomas, oncolytic herpes simplex virus and oncolytic adenovirus show notable potential. Genetic modifications play a crucial role in optimizing their therapeutic efficacy. Different generations of replicative conditioned oncolytic human adenovirus and oncolytic HSV have been developed, incorporating specific modifications to enhance tumor selectivity, replication efficiency, and immune activation. This review article summarizes these genetic modifications, offering insights into the underlying mechanisms of Oncolytic viruses' therapy. It also aims to identify strategies for further enhancing the therapeutic benefits of Oncolytic viruses. However, it is important to acknowledge that additional research and clinical trials are necessary to establish the safety, efficacy, and optimal utilization of Oncolytic viruses in treating recurrent glioblastoma.
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Affiliation(s)
- Mingming Hu
- Institute of Thoracic Oncology, West China Hospital, Sichuan University, Chengdu, China
- Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - XuLiang Liao
- Institute of Thoracic Oncology, West China Hospital, Sichuan University, Chengdu, China
- Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Tao
- Institute of Thoracic Oncology, West China Hospital, Sichuan University, Chengdu, China
- Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Yaohui Chen
- Institute of Thoracic Oncology, West China Hospital, Sichuan University, Chengdu, China
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
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4
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Patiño-García A, Alonso MM, Gállego Pérez-Larraya J. Promises of oncolytic viral therapy for adult and children with brain glioma. Curr Opin Oncol 2023; 35:529-535. [PMID: 37820087 DOI: 10.1097/cco.0000000000000995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
PURPOSE OF REVIEW The purpose of this review is to give an overview of early clinical studies addressing the safety and efficacy of oncolytic immunovirotherapy in adults and children with brain gliomas, and to highlight the extensive potential for the development of this therapeutic alternative. RECENT FINDINGS The lack of curative treatments and poor prognosis of high-grade glioma patients warrants research on innovative therapeutic alternatives such as oncolytic immunovirotherapy. Engineered modified oncolytic viruses exert both a direct lytic effect on tumor cells and a specific antitumor immune response. Early clinical trials of different DNA and RNA oncolytic viruses, mainly Herpes Simplex Virus Type-1 and adenovirus based platforms, have consistently demonstrated an acceptable safety profile, hints of efficacy and the potential of this therapy to reshape the tumor microenvironment in both adult and pediatric patients with glioma, thus constituting the basis for the development of more advanced clinical trials. SUMMARY The future landscape of oncolytic immunovirotherapy is still plenty of challenges and opportunities to enable its full therapeutic potential in both adult and children with brain gliomas.
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Affiliation(s)
- Ana Patiño-García
- Program in Solid Tumors, Center for Applied Medical Research
- Department of Pediatrics, Clínica Universidad de Navarra
- Cancer Center Clínica Universidad de Navarra
- Health Research Institute of Navarra (IdiSNA)
| | - Marta M Alonso
- Program in Solid Tumors, Center for Applied Medical Research
- Department of Pediatrics, Clínica Universidad de Navarra
- Cancer Center Clínica Universidad de Navarra
- Health Research Institute of Navarra (IdiSNA)
| | - Jaime Gállego Pérez-Larraya
- Program in Solid Tumors, Center for Applied Medical Research
- Cancer Center Clínica Universidad de Navarra
- Health Research Institute of Navarra (IdiSNA)
- Department of Neurology, Clínica Universidad de Navarra, Pamplona, Navarra, Spain
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5
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Cherkashina OL, Morgun EI, Rippa AL, Kosykh AV, Alekhnovich AV, Stoliarzh AB, Terskikh VV, Vorotelyak EA, Kalabusheva EP. Blank Spots in the Map of Human Skin: The Challenge for Xenotransplantation. Int J Mol Sci 2023; 24:12769. [PMID: 37628950 PMCID: PMC10454653 DOI: 10.3390/ijms241612769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/02/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Most of the knowledge about human skin homeostasis, development, wound healing, and diseases has been accumulated from human skin biopsy analysis by transferring from animal models and using different culture systems. Human-to-mouse xenografting is one of the fundamental approaches that allows the skin to be studied in vivo and evaluate the ongoing physiological processes in real time. Humanized animals permit the actual techniques for tracing cell fate, clonal analysis, genetic modifications, and drug discovery that could never be employed in humans. This review recapitulates the novel facts about mouse skin self-renewing, regeneration, and pathology, raises issues regarding the gaps in our understanding of the same options in human skin, and postulates the challenges for human skin xenografting.
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Affiliation(s)
- Olga L. Cherkashina
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Elena I. Morgun
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Alexandra L. Rippa
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Anastasiya V. Kosykh
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Alexander V. Alekhnovich
- Federal Government-Financed Institution “National Medical Research Center of High Medical Technologies n.a. A.A. Vishnevsky”, 143421 Krasnogorsk, Russia
| | - Aleksey B. Stoliarzh
- Federal Government-Financed Institution “National Medical Research Center of High Medical Technologies n.a. A.A. Vishnevsky”, 143421 Krasnogorsk, Russia
| | - Vasiliy V. Terskikh
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Ekaterina A. Vorotelyak
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Ekaterina P. Kalabusheva
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
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Kardani K, Sanchez Gil J, Rabkin SD. Oncolytic herpes simplex viruses for the treatment of glioma and targeting glioblastoma stem-like cells. Front Cell Infect Microbiol 2023; 13:1206111. [PMID: 37325516 PMCID: PMC10264819 DOI: 10.3389/fcimb.2023.1206111] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 05/15/2023] [Indexed: 06/17/2023] Open
Abstract
Glioblastoma (GBM) is one of the most lethal cancers, having a poor prognosis and a median survival of only about 15 months with standard treatment (surgery, radiation, and chemotherapy), which has not been significantly extended in decades. GBM demonstrates remarkable cellular heterogeneity, with glioblastoma stem-like cells (GSCs) at the apex. GSCs are a subpopulation of GBM cells that possess the ability to self-renew, differentiate, initiate tumor formation, and manipulate the tumor microenvironment (TME). GSCs are no longer considered a static population of cells with specific markers but are quite flexible phenotypically and in driving tumor heterogeneity and therapeutic resistance. In light of these features, they are a critical target for successful GBM therapy. Oncolytic viruses, in particular oncolytic herpes simplex viruses (oHSVs), have many attributes for therapy and are promising agents to target GSCs. oHSVs are genetically-engineered to selectively replicate in and kill cancer cells, including GSCs, but not normal cells. Moreover, oHSV can induce anti-tumor immune responses and synergize with other therapies, such as chemotherapy, DNA repair inhibitors, and immune checkpoint inhibitors, to potentiate treatment effects and reduce GSC populations that are partly responsible for chemo- and radio-resistance. Herein, we present an overview of GSCs, activity of different oHSVs, clinical trial results, and combination strategies to enhance efficacy, including therapeutic arming of oHSV. Throughout, the therapeutic focus will be on GSCs and studies specifically targeting these cells. Recent clinical trials and approval of oHSV G47Δ in Japan for patients with recurrent glioma demonstrate the efficacy and promise of oHSV therapy.
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Affiliation(s)
| | | | - Samuel D. Rabkin
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
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7
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Fudaba H, Wakimoto H. Oncolytic virus therapy for malignant gliomas: entering the new era. Expert Opin Biol Ther 2023; 23:269-282. [PMID: 36809883 DOI: 10.1080/14712598.2023.2184256] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
INTRODUCTION To overcome the challenge of treating malignant brain tumors, oncolytic viruses (OVs) represent an innovative therapeutic approach, featuring unique mechanisms of action. The recent conditional approval of the oncolytic herpes simplex virus G47Δ as a therapeutic for malignant brain tumors marked a significant milestone in the long history of OV development in neuro-oncology. AREAS COVERED This review summarizes the results of recently completed and active clinical studies that investigate the safety and efficacy of different OV types in patients with malignant gliomas. The changing landscape of the OV trial design includes expansion of subjects to newly diagnosed tumors and pediatric populations. A variety of delivery methods and new routes of administration are vigorously tested to optimize tumor infection and overall efficacy. New therapeutic strategies such as combination with immunotherapies are proposed that take advantage of the characteristics of OV therapy as an immunotherapy. Preclinical studies of OV have been active and aim to translate new OV strategies to the clinic. EXPERT OPINION For the next decade, clinical trials and preclinical and translational research will continue to drive the development of innovative OV treatments for malignant gliomas and benefit patients and define new OV biomarkers.
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Affiliation(s)
- Hirotaka Fudaba
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.,Department of Neurosurgery, Oita University Faculty of Medicine, Yufu, Japan
| | - Hiroaki Wakimoto
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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8
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Persistent inflammation and neuronal loss in the mouse brain induced by a modified form of attenuated herpes simplex virus type I. Virol Sin 2023; 38:108-118. [PMID: 36436797 PMCID: PMC10006190 DOI: 10.1016/j.virs.2022.11.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022] Open
Abstract
Herpes simplex virus-1 (HSV-1) is a widespread neurotropic virus that can reach the brain and cause a rare but acute herpes simplex encephalitis (HSE) with a high mortality rate. Most patients present with changes in neurological and behavioral status, and survivors suffer long-term neurological sequelae. To date, the pathogenesis leading to brain damage is still not well understood. HSV-1 induced encephalitis in the central nervous system (CNS) in animals are usually very diffuse and progressing rapidly, and mostly fatal, making the analysis difficult. Here, we established a mouse model of HSE via intracerebral inoculation of modified version of neural-attenuated strains of HSV-1 (deletion of ICP34.5 and inserting a strong promoter into the latency-associated transcript region), in which the LMR-αΔpA strain initiated moderate productive infection, leading to strong host immune and inflammatory response characterized by persistent microglia activation. This viral replication activity and prolonged inflammatory response activated signaling pathways in neuronal damage, amyloidosis, Alzheimer's disease, and neurodegeneration, eventually leading to neuronal loss and behavioral changes characterized by hypokinesia. Our study reveals detailed pathogenic processes and persistent inflammatory responses in the CNS and provides a controlled, mild and non-lethal HSE model for studying long-term neuronal injury and increased risk of neurodegenerative diseases due to HSV-1 infection.
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Krawczyk E, Kangas C, He B. HSV Replication: Triggering and Repressing STING Functionality. Viruses 2023; 15:226. [PMID: 36680267 PMCID: PMC9864509 DOI: 10.3390/v15010226] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
Herpes simplex virus (HSV) has persisted within human populations due to its ability to establish both lytic and latent infection. Given this, human hosts have evolved numerous immune responses to protect against HSV infection. Critical in this defense against HSV, the host protein stimulator of interferon genes (STING) functions as a mediator of the antiviral response by inducing interferon (IFN) as well as IFN-stimulated genes. Emerging evidence suggests that during HSV infection, dsDNA derived from either the virus or the host itself ultimately activates STING signaling. While a complex regulatory circuit is in operation, HSV has evolved several mechanisms to neutralize the STING-mediated antiviral response. Within this review, we highlight recent progress involving HSV interactions with the STING pathway, with a focus on how STING influences HSV replication and pathogenesis.
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Affiliation(s)
| | | | - Bin He
- Department of Microbiology and Immunology, College of Medicine, University of Illinois, Chicago, IL 60612, USA
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Scanlan H, Coffman Z, Bettencourt J, Shipley T, Bramblett DE. Herpes simplex virus 1 as an oncolytic viral therapy for refractory cancers. Front Oncol 2022; 12:940019. [PMID: 35965554 PMCID: PMC9364694 DOI: 10.3389/fonc.2022.940019] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 06/27/2022] [Indexed: 11/25/2022] Open
Abstract
The need for efficacious and non-toxic cancer therapies is paramount. Oncolytic viruses (OVs) are showing great promise and are introducing new possibilities in cancer treatment with their ability to selectively infect tumor cells and trigger antitumor immune responses. Herpes Simplex Virus 1 (HSV-1) is a commonly selected OV candidate due to its large genome, relative safety profile, and ability to infect a variety of cell types. Talimogene laherparevec (T-VEC) is an HSV-1-derived OV variant and the first and only OV therapy currently approved for clinical use by the United States Food and Drug Administration (FDA). This review provides a concise description of HSV-1 as an OV candidate and the genomic organization of T-VEC. Furthermore, this review focuses on the advantages and limitations in the use of T-VEC compared to other HSV-1 OV variants currently in clinical trials. In addition, approaches for future directions of HSV-1 OVs as cancer therapy is discussed.
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Affiliation(s)
- Hayle Scanlan
- Rowan School of Medicine, RowanSOM-Jefferson Health-Virtua Our Lady of Lourdes Hospital, Stratford, NJ, United States
| | - Zachary Coffman
- Monroe Clinic Rural Family Medicine Program, The University of Illinois College of Medicine Rockford, Monroe, WI, United States
| | - Jeffrey Bettencourt
- Department of Biomedical Sciences, Burrell College of Osteopathic Medicine, Las Cruces, NM, United States
| | - Timothy Shipley
- Department of Biomedical Sciences, A.T. Still University School of Osteopathic Medicine in Arizona, Mesa, AZ, United States
| | - Debra E. Bramblett
- Department of Biomedical Sciences, Burrell College of Osteopathic Medicine, Las Cruces, NM, United States
- *Correspondence: Debra E. Bramblett,
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The In Vitro Replication, Spread, and Oncolytic Potential of Finnish Circulating Strains of Herpes Simplex Virus Type 1. Viruses 2022; 14:v14061290. [PMID: 35746761 PMCID: PMC9230972 DOI: 10.3390/v14061290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 12/17/2022] Open
Abstract
Herpes simplex virus type 1 (HSV-1) is the only FDA- and EMA- approved oncolytic virus, and accordingly, many potential oncolytic HSVs (oHSV) are in clinical development. The utilized oHSV parental strains are, however, mostly based on laboratory reference strains, which may possess a compromised cytolytic capacity in contrast to circulating strains of HSV-1. Here, we assess the phenotype of thirty-six circulating HSV-1 strains from Finland to uncover their potential as oHSV backbones. First, we determined their capacity for cell-to-cell versus extracellular spread, to find strains with replication profiles favorable for each application. Second, to unfold the differences, we studied the genetic diversity of two relevant viral glycoproteins (gB/UL27, gI/US7). Third, we examined the oncolytic potential of the strains in cells representing glioma, lymphoma, and colorectal adenocarcinoma. Our results suggest that the phenotype of a circulating isolate, including the oncolytic potential, is highly related to the host cell type. Nevertheless, we identified isolates with increased oncolytic potential in comparison with the reference viruses across many or all of the studied cancer cell types. Our research emphasizes the need for careful selection of the backbone virus in early vector design, and it highlights the potential of clinical isolates as backbones in oHSV development.
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12
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Otani Y, Yoo JY, Shimizu T, Kurozumi K, Date I, Kaur B. Implications of immune cells in oncolytic herpes simplex virotherapy for glioma. Brain Tumor Pathol 2022; 39:57-64. [PMID: 35384530 DOI: 10.1007/s10014-022-00431-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 03/27/2022] [Indexed: 12/13/2022]
Abstract
Despite current progress in treatment, glioblastoma (GBM) remains a lethal primary malignant tumor of the central nervous system. Although immunotherapy has recently achieved remarkable survival effectiveness in multiple malignancies, none of the immune checkpoint inhibitors (ICIs) for GBM have shown anti-tumor efficacy in clinical trials. GBM has a characteristic immunosuppressive tumor microenvironment (TME) that results in the failure of ICIs. Oncolytic herpes simplex virotherapy (oHSV) is the most advanced United States Food and Drug Administration-approved virotherapy for advanced metastatic melanoma patients. Recently, another oHSV, Delytact®, was granted conditional approval in Japan against GBM, highlighting it as a promising treatment. Since oncolytic virotherapy can recruit abundant immune cells and modify the immune TME, oncolytic virotherapy for immunologically cold GBM will be an attractive therapeutic option for GBM. However, as these immune cells have roles in both anti-tumor and anti-viral immunity, fine-tuning of the TME using oncolytic virotherapy will be important to maximize the therapeutic efficacy. In this review, we discuss the current knowledge of oHSV, with a focus on the role of immune cells as friend or foe in oncolytic virotherapy.
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Affiliation(s)
- Yoshihiro Otani
- Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
| | - Ji Young Yoo
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center at Houston, 6431 Fannin St., Houston, TX, 77030, USA
| | - Toshihiko Shimizu
- Department of Neurosurgery, Matsuyama Shimin Hospital, 2-6-5 Otemachi, Matsuyama, Ehime, 790-0067, Japan
| | - Kazuhiko Kurozumi
- Department of Neurosurgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Isao Date
- Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Balveen Kaur
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center at Houston, 6431 Fannin St., Houston, TX, 77030, USA
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Mahmoud AB, Ajina R, Aref S, Darwish M, Alsayb M, Taher M, AlSharif SA, Hashem AM, Alkayyal AA. Advances in immunotherapy for glioblastoma multiforme. Front Immunol 2022; 13:944452. [PMID: 36311781 PMCID: PMC9597698 DOI: 10.3389/fimmu.2022.944452] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 09/23/2022] [Indexed: 02/05/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most common and aggressive malignant brain tumor of the central nervous system and has a very poor prognosis. The current standard of care for patients with GBM involves surgical resection, radiotherapy, and chemotherapy. Unfortunately, conventional therapies have not resulted in significant improvements in the survival outcomes of patients with GBM; therefore, the overall mortality rate remains high. Immunotherapy is a type of cancer treatment that helps the immune system to fight cancer and has shown success in different types of aggressive cancers. Recently, healthcare providers have been actively investigating various immunotherapeutic approaches to treat GBM. We reviewed the most promising immunotherapy candidates for glioblastoma that have achieved encouraging results in clinical trials, focusing on immune checkpoint inhibitors, oncolytic viruses, nonreplicating viral vectors, and chimeric antigen receptor (CAR) immunotherapies.
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Affiliation(s)
- Ahmad Bakur Mahmoud
- College of Applied Medical Sciences, Taibah University, Almadinah Almunwarah, Saudi Arabia
- Strategic Research and Innovation Laboratories, Taibah University, Almadinah Almunwarah, Saudi Arabia
- King Abdullah International Medical Research Centre, King Saud University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
- *Correspondence: Ahmad Bakur Mahmoud, ; Almohanad A. Alkayyal,
| | - Reham Ajina
- King Abdullah International Medical Research Centre, King Saud University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Sarah Aref
- King Abdullah International Medical Research Centre, King Saud University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Manar Darwish
- Strategic Research and Innovation Laboratories, Taibah University, Almadinah Almunwarah, Saudi Arabia
| | - May Alsayb
- College of Applied Medical Sciences, Taibah University, Almadinah Almunwarah, Saudi Arabia
| | - Mustafa Taher
- College of Applied Medical Sciences, Taibah University, Almadinah Almunwarah, Saudi Arabia
- Strategic Research and Innovation Laboratories, Taibah University, Almadinah Almunwarah, Saudi Arabia
| | - Shaker A. AlSharif
- King Fahad Hospital, Ministry of Health, Almadinah Almunwarah, Saudi Arabia
| | - Anwar M. Hashem
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center; King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Almohanad A. Alkayyal
- Department of Medical Laboratory Technology, University of Tabuk, Tabuk, Saudi Arabia
- Immunology Research Program, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
- *Correspondence: Ahmad Bakur Mahmoud, ; Almohanad A. Alkayyal,
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14
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Liu X, Acharya D, Krawczyk E, Kangas C, Gack MU, He B. Herpesvirus-mediated stabilization of ICP0 expression neutralizes restriction by TRIM23. Proc Natl Acad Sci U S A 2021; 118:e2113060118. [PMID: 34903664 PMCID: PMC8713807 DOI: 10.1073/pnas.2113060118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 11/08/2021] [Indexed: 11/18/2022] Open
Abstract
Herpes simplex virus (HSV) infection relies on immediate early proteins that initiate viral replication. Among them, ICP0 is known, for many years, to facilitate the onset of viral gene expression and reactivation from latency. However, how ICP0 itself is regulated remains elusive. Through genetic analyses, we identify that the viral γ134.5 protein, an HSV virulence factor, interacts with and prevents ICP0 from proteasomal degradation. Furthermore, we show that the host E3 ligase TRIM23, recently shown to restrict the replication of HSV-1 (and certain other viruses) by inducing autophagy, triggers the proteasomal degradation of ICP0 via K11- and K48-linked ubiquitination. Functional analyses reveal that the γ134.5 protein binds to and inactivates TRIM23 through blockade of K27-linked TRIM23 autoubiquitination. Deletion of γ134.5 or ICP0 in a recombinant HSV-1 impairs viral replication, whereas ablation of TRIM23 markedly rescues viral growth. Herein, we show that TRIM23, apart from its role in autophagy-mediated HSV-1 restriction, down-regulates ICP0, whereas viral γ134.5 functions to disable TRIM23. Together, these results demonstrate that posttranslational regulation of ICP0 by virus and host factors determines the outcome of HSV-1 infection.
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Affiliation(s)
- Xing Liu
- Department of Microbiology and Immunology, University of Illinois College of Medicine, Chicago, IL 60612
| | - Dhiraj Acharya
- Florida Research and Innovation Center, Cleveland Clinic, Port Saint Lucie, FL 34987
| | - Eric Krawczyk
- Department of Microbiology and Immunology, University of Illinois College of Medicine, Chicago, IL 60612
| | - Chase Kangas
- Department of Microbiology and Immunology, University of Illinois College of Medicine, Chicago, IL 60612
| | - Michaela U Gack
- Florida Research and Innovation Center, Cleveland Clinic, Port Saint Lucie, FL 34987
| | - Bin He
- Department of Microbiology and Immunology, University of Illinois College of Medicine, Chicago, IL 60612;
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15
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Zeng J, Li X, Sander M, Zhang H, Yan G, Lin Y. Oncolytic Viro-Immunotherapy: An Emerging Option in the Treatment of Gliomas. Front Immunol 2021; 12:721830. [PMID: 34675919 PMCID: PMC8524046 DOI: 10.3389/fimmu.2021.721830] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 09/16/2021] [Indexed: 01/17/2023] Open
Abstract
The prognosis of malignant gliomas remains poor, with median survival fewer than 20 months and a 5-year survival rate merely 5%. Their primary location in the central nervous system (CNS) and its immunosuppressive environment with little T cell infiltration has rendered cancer therapies mostly ineffective, and breakthrough therapies such as immune checkpoint inhibitors (ICIs) have shown limited benefit. However, tumor immunotherapy is developing rapidly and can help overcome these obstacles. But for now, malignant gliomas remain fatal with short survival and limited therapeutic options. Oncolytic virotherapy (OVT) is a unique antitumor immunotherapy wherein viruses selectively or preferentially kill tumor cells, replicate and spread through tumors while inducing antitumor immune responses. OVTs can also recondition the tumor microenvironment and improve the efficacy of other immunotherapies by escalating the infiltration of immune cells into tumors. Some OVTs can penetrate the blood-brain barrier (BBB) and possess tropism for the CNS, enabling intravenous delivery. Despite the therapeutic potential displayed by oncolytic viruses (OVs), optimizing OVT has proved challenging in clinical development, and marketing approvals for OVTs have been rare. In June 2021 however, as a genetically engineered OV based on herpes simplex virus-1 (G47Δ), teserpaturev got conditional and time-limited approval for the treatment of malignant gliomas in Japan. In this review, we summarize the current state of OVT, the synergistic effect of OVT in combination with other immunotherapies as well as the hurdles to successful clinical use. We also provide some suggestions to overcome the challenges in treating of gliomas.
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Affiliation(s)
- Jiayi Zeng
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xiangxue Li
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Peking University, Beijing, China
| | - Max Sander
- Department of International Cooperation, Guangzhou Virotech Pharmaceutical Co., Ltd., Guangzhou, China
| | - Haipeng Zhang
- Department of Pharmacology, School of Medicine, Jinan University, Guangzhou, China
| | - Guangmei Yan
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yuan Lin
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
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16
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Jahan N, Ghouse SM, Martuza RL, Rabkin SD. In Situ Cancer Vaccination and Immunovirotherapy Using Oncolytic HSV. Viruses 2021; 13:v13091740. [PMID: 34578321 PMCID: PMC8473045 DOI: 10.3390/v13091740] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 12/13/2022] Open
Abstract
Herpes simplex virus (HSV) can be genetically altered to acquire oncolytic properties so that oncolytic HSV (oHSV) preferentially replicates in and kills cancer cells, while sparing normal cells, and inducing anti-tumor immune responses. Over the last three decades, a better understanding of HSV genes and functions, and improved genetic-engineering techniques led to the development of oHSV as a novel immunovirotherapy. The concept of in situ cancer vaccination (ISCV) was first introduced when oHSV was found to induce a specific systemic anti-tumor immune response with an abscopal effect on non-injected tumors, in the process of directly killing tumor cells. Thus, the use of oHSV for tumor vaccination in situ is antigen-agnostic. The research and development of oHSVs have moved rapidly, with the field of oncolytic viruses invigorated by the FDA/EMA approval of oHSV talimogene laherparepvec in 2015 for the treatment of advanced melanoma. Immunovirotherapy can be enhanced by arming oHSV with immunomodulatory transgenes and/or using them in combination with other chemotherapeutic and immunotherapeutic agents. This review offers an overview of the development of oHSV as an agent for ISCV against solid tumors, describing the multitude of different oHSVs and their efficacy in immunocompetent mouse models and in clinical trials.
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Affiliation(s)
- Nusrat Jahan
- Molecular Neurosurgery Laboratory and Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (N.J.); (S.M.G.); (R.L.M.)
| | - Shanawaz M. Ghouse
- Molecular Neurosurgery Laboratory and Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (N.J.); (S.M.G.); (R.L.M.)
| | - Robert L. Martuza
- Molecular Neurosurgery Laboratory and Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (N.J.); (S.M.G.); (R.L.M.)
| | - Samuel D. Rabkin
- Department of Neurosurgery, Massachusetts General Hospital, 185 Cambridge St., CPZN-3800, Boston, MA 02114, USA
- Correspondence:
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17
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Wedekind MF, Miller KE, Chen CY, Wang PY, Hutzen BJ, Currier MA, Nartker B, Roberts RD, Boon L, Conner J, LaHaye S, Kelly BJ, Gordon D, White P, Mardis ER, Cripe TP. Endogenous retrovirus envelope as a tumor-associated immunotherapeutic target in murine osteosarcoma. iScience 2021; 24:102759. [PMID: 34278266 PMCID: PMC8267546 DOI: 10.1016/j.isci.2021.102759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/12/2021] [Accepted: 06/18/2021] [Indexed: 01/04/2023] Open
Abstract
Osteosarcoma remains one of the deadliest cancers in pediatrics and young adults. We administered two types of immunotherapies, oncolytic virotherapy and immune checkpoint inhibition, to two murine osteosarcoma models and observed divergent results. Mice bearing F420 showed no response, whereas those with K7M2 showed prolonged survival in response to combination therapy. K7M2 had higher expression of immune-related genes and higher baseline immune cell infiltrates, but there were no significant differences in tumor mutational burden or predicted MHC class I binding of nonsynonymous mutations. Instead, we found several mouse endogenous retrovirus sequences highly expressed in K7M2 compared with F420. T cell tetramer staining for one of them, gp70, was detected in mice with K7M2 but not F420, suggesting that endogenous retrovirus proteins are targets for the anti-tumor immune reaction. Given prior observations of endogenous retrovirus expression in human osteosarcomas, our findings may be translatable to human disease.
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Affiliation(s)
- Mary Frances Wedekind
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, 700 Children's Drive Columbus, OH 43205, USA
- Division of Hematology/Oncology/Blood and Marrow Transplantation, Department of Pediatrics, The Ohio State University, Columbus, OH, USA
| | - Katherine E. Miller
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Chun-Yu Chen
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, 700 Children's Drive Columbus, OH 43205, USA
| | - Pin-Yi Wang
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, 700 Children's Drive Columbus, OH 43205, USA
| | - Brian J. Hutzen
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, 700 Children's Drive Columbus, OH 43205, USA
| | - Mark A. Currier
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, 700 Children's Drive Columbus, OH 43205, USA
| | - Brooke Nartker
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, 700 Children's Drive Columbus, OH 43205, USA
| | - Ryan D. Roberts
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, 700 Children's Drive Columbus, OH 43205, USA
- Division of Hematology/Oncology/Blood and Marrow Transplantation, Department of Pediatrics, The Ohio State University, Columbus, OH, USA
| | - Louis Boon
- Polpharma Biologics, Utrecht, the Netherlands
| | | | - Stephanie LaHaye
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Benjamin J. Kelly
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - David Gordon
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Peter White
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Elaine R. Mardis
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Timothy P. Cripe
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, 700 Children's Drive Columbus, OH 43205, USA
- Division of Hematology/Oncology/Blood and Marrow Transplantation, Department of Pediatrics, The Ohio State University, Columbus, OH, USA
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18
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Oncolytic HSV: Underpinnings of Tumor Susceptibility. Viruses 2021; 13:v13071408. [PMID: 34372614 PMCID: PMC8310378 DOI: 10.3390/v13071408] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/03/2021] [Accepted: 07/14/2021] [Indexed: 12/12/2022] Open
Abstract
Oncolytic herpes simplex virus (oHSV) is a therapeutic modality that has seen substantial success for the treatment of cancer, though much remains to be improved. Commonly attenuated through the deletion or alteration of the γ134.5 neurovirulence gene, the basis for the success of oHSV relies in part on the malignant silencing of cellular pathways critical for limiting these viruses in healthy host tissue. However, only recently have the molecular mechanisms underlying the success of these treatments begun to emerge. Further clarification of these mechanisms can strengthen rational design approaches to develop the next generation of oHSV. Herein, we review our current understanding of the molecular basis for tumor susceptibility to γ134.5-attenuated oHSV, with particular focus on the malignant suppression of nucleic acid sensing, along with strategies meant to improve the clinical efficacy of these therapeutic viruses.
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19
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The Effect of Herpes Simplex Virus-Type-1 (HSV-1) Oncolytic Immunotherapy on the Tumor Microenvironment. Viruses 2021; 13:v13071200. [PMID: 34206677 PMCID: PMC8310320 DOI: 10.3390/v13071200] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/11/2021] [Accepted: 06/16/2021] [Indexed: 12/19/2022] Open
Abstract
The development of cancer causes disruption of anti-tumor immunity required for surveillance and elimination of tumor cells. Immunotherapeutic strategies aim for the restoration or establishment of these anti-tumor immune responses. Cancer immunotherapies include immune checkpoint inhibitors (ICIs), adoptive cellular therapy (ACT), cancer vaccines, and oncolytic virotherapy (OVT). The clinical success of some of these immunotherapeutic modalities, including herpes simplex virus type-1 derived OVT, resulted in Food and Drug Administration (FDA) approval for use in treatment of human cancers. However, a significant proportion of patients do not respond or benefit equally from these immunotherapies. The creation of an immunosuppressive tumor microenvironment (TME) represents an important barrier preventing success of many immunotherapeutic approaches. Mechanisms of immunosuppression in the TME are a major area of current research. In this review, we discuss how oncolytic HSV affects the tumor microenvironment to promote anti-tumor immune responses. Where possible we focus on oncolytic HSV strains for which clinical data is available, and discuss how these viruses alter the vasculature, extracellular matrix and immune responses in the tumor microenvironment.
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20
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Carpenter AB, Carpenter AM, Aiken R, Hanft S. Oncolytic virus in gliomas: a review of human clinical investigations. Ann Oncol 2021; 32:968-982. [PMID: 33771666 DOI: 10.1016/j.annonc.2021.03.197] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 03/09/2021] [Accepted: 03/12/2021] [Indexed: 12/15/2022] Open
Abstract
Gliomas remain one of the more frustrating targets for oncologic therapy. Glioma resistance to conventional therapeutics is a product of their immune-privileged milieu behind the blood-brain barrier, in addition to their suppressive effect on the immune response itself. Taking the lead from the growing success of immunotherapy for systemic cancers, such as lung cancer and melanoma, immunotherapeutics has emerged as a major player in the potential treatment of gliomas, with oncolytic viruses in particular showing significant promise as evidenced by the recent Breakthrough and Fast Tract Designations for PVSRIPO and DNX2401. This review serves as a useful and updated compendium of the completed human clinical investigations for several oncolytic viruses in the treatment of gliomas.
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Affiliation(s)
- A B Carpenter
- Georgetown University School of Medicine, Washington, USA.
| | - A M Carpenter
- Department of Neurological Surgery, Neurological Institute of New Jersey, Rutgers New Jersey Medical School, Newark, USA
| | - R Aiken
- Gerald J. Glasser Brain Tumor Center, Atlantic Healthcare, Summit, USA
| | - S Hanft
- Department of Neurological Surgery, Westchester Medical Center, New York Medical College, Valhalla, USA
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21
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Benmelouka AY, Munir M, Sayed A, Attia MS, Ali MM, Negida A, Alghamdi BS, Kamal MA, Barreto GE, Ashraf GM, Meshref M, Bahbah EI. Neural Stem Cell-Based Therapies and Glioblastoma Management: Current Evidence and Clinical Challenges. Int J Mol Sci 2021; 22:2258. [PMID: 33668356 PMCID: PMC7956497 DOI: 10.3390/ijms22052258] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/16/2021] [Accepted: 02/17/2021] [Indexed: 02/05/2023] Open
Abstract
Gliomas, which account for nearly a quarter of all primary CNS tumors, present significant contemporary therapeutic challenges, particularly the highest-grade variant (glioblastoma multiforme), which has an especially poor prognosis. These difficulties are due to the tumor's aggressiveness and the adverse effects of radio/chemotherapy on the brain. Stem cell therapy is an exciting area of research being explored for several medical issues. Neural stem cells, normally present in the subventricular zone and the hippocampus, preferentially migrate to tumor masses. Thus, they have two main advantages: They can minimize the side effects associated with systemic radio/chemotherapy while simultaneously maximizing drug delivery to the tumor site. Another feature of stem cell therapy is the variety of treatment approaches it allows. Stem cells can be genetically engineered into expressing a wide variety of immunomodulatory substances that can inhibit tumor growth. They can also be used as delivery vehicles for oncolytic viral vectors, which can then be used to combat the tumorous mass. An alternative approach would be to combine stem cells with prodrugs, which can subsequently convert them into the active form upon migration to the tumor mass. As with any therapeutic modality still in its infancy, much of the research regarding their use is primarily based upon knowledge gained from animal studies, and a number of ongoing clinical trials are currently investigating their effectiveness in humans. The aim of this review is to highlight the current state of stem cell therapy in the treatment of gliomas, exploring the different mechanistic approaches, clinical applicability, and the existing limitations.
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Affiliation(s)
| | - Malak Munir
- Faculty of Medicine, Ain Shams University, Cairo 11591, Egypt; (M.M.); (A.S.)
| | - Ahmed Sayed
- Faculty of Medicine, Ain Shams University, Cairo 11591, Egypt; (M.M.); (A.S.)
| | - Mohamed Salah Attia
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt;
| | - Mohamad M. Ali
- Faculty of Medicine, Al-Azhar University, Damietta 34511, Egypt; (M.M.A.); (E.I.B.)
| | - Ahmed Negida
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2UP, UK;
- Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Badrah S. Alghamdi
- Department of Physiology, Neuroscience Unit, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia; or
| | - Mohammad Amjad Kamal
- West China School of Nursing/Institutes for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China;
- King Fahd Medical Research Center, King Abdulaziz University, P. O. Box 80216, Jeddah 21589, Saudi Arabia
- Novel Global Community Educational Foundation, 7 Peterlee Place, Hebersham, NSW 2770, Australia
| | - George E. Barreto
- Department of Biological Sciences, University of Limerick, V94 T9PX Limerick, Ireland
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago 32310, Chile
| | - Ghulam Md Ashraf
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia; or
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | | | - Eshak I. Bahbah
- Faculty of Medicine, Al-Azhar University, Damietta 34511, Egypt; (M.M.A.); (E.I.B.)
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22
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Nguyen HM, Saha D. The Current State of Oncolytic Herpes Simplex Virus for Glioblastoma Treatment. Oncolytic Virother 2021; 10:1-27. [PMID: 33659221 PMCID: PMC7917312 DOI: 10.2147/ov.s268426] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 01/18/2021] [Indexed: 12/12/2022] Open
Abstract
Glioblastoma (GBM) is a lethal primary malignant brain tumor with no current effective treatments. The recent emergence of immuno-virotherapy and FDA approval of T-VEC have generated a great expectation towards oncolytic herpes simplex viruses (oHSVs) as a promising treatment option for GBM. Since the generation and testing of the first genetically engineered oHSV in glioma in the early 1990s, oHSV-based therapies have shown a long way of great progress in terms of anti-GBM efficacy and safety, both preclinically and clinically. Here, we revisit the literature to understand the recent advancement of oHSV in the treatment of GBM. In addition, we discuss current obstacles to oHSV-based therapies and possible strategies to overcome these pitfalls.
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Affiliation(s)
- Hong-My Nguyen
- Department of Immunotherapeutics and Biotechnology, Texas Tech University Health Sciences Center, School of Pharmacy, Abilene, TX, 79601, USA
| | - Dipongkor Saha
- Department of Immunotherapeutics and Biotechnology, Texas Tech University Health Sciences Center, School of Pharmacy, Abilene, TX, 79601, USA
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23
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Oncolytic Viruses and Hematological Malignancies: A New Class of Immunotherapy Drugs. ACTA ACUST UNITED AC 2020; 28:159-183. [PMID: 33704184 PMCID: PMC7816176 DOI: 10.3390/curroncol28010019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 02/06/2023]
Abstract
The use of viruses for tumour treatment has been imagined more than one hundred years ago, when it was reported that viral diseases were occasionally leading to a decrease in neoplastic lesions. Oncolytic viruses (OVs) seem to have a specific tropism for tumour cells. Previously, it was hypothesised that OVs’ antineoplastic actions were mainly due to their ability to contaminate, proliferate and destroy tumour cells and the immediate destructive effect on cells was believed to be the single mechanism of action of OVs’ action. Instead, it has been established that oncolytic viruses operate via a multiplicity of systems, including mutation of tumour milieu and a composite change of the activity of immune effectors. Oncolytic viruses redesign the tumour environment towards an antitumour milieu. The aim of our work is to evaluate the findings present in the literature about the use of OVs in the cure of haematological neoplastic pathologies such as multiple myeloma, acute and chronic myeloid leukaemia, and lymphoproliferative diseases. Further experimentations are essential to recognize the most efficient virus or treatment combinations for specific haematological diseases, and the combinations able to induce the strongest immune response.
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24
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Dogrammatzis C, Waisner H, Kalamvoki M. "Non-Essential" Proteins of HSV-1 with Essential Roles In Vivo: A Comprehensive Review. Viruses 2020; 13:E17. [PMID: 33374862 PMCID: PMC7824580 DOI: 10.3390/v13010017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 12/19/2022] Open
Abstract
Viruses encode for structural proteins that participate in virion formation and include capsid and envelope proteins. In addition, viruses encode for an array of non-structural accessory proteins important for replication, spread, and immune evasion in the host and are often linked to virus pathogenesis. Most virus accessory proteins are non-essential for growth in cell culture because of the simplicity of the infection barriers or because they have roles only during a state of the infection that does not exist in cell cultures (i.e., tissue-specific functions), or finally because host factors in cell culture can complement their absence. For these reasons, the study of most nonessential viral factors is more complex and requires development of suitable cell culture systems and in vivo models. Approximately half of the proteins encoded by the herpes simplex virus 1 (HSV-1) genome have been classified as non-essential. These proteins have essential roles in vivo in counteracting antiviral responses, facilitating the spread of the virus from the sites of initial infection to the peripheral nervous system, where it establishes lifelong reservoirs, virus pathogenesis, and other regulatory roles during infection. Understanding the functions of the non-essential proteins of herpesviruses is important to understand mechanisms of viral pathogenesis but also to harness properties of these viruses for therapeutic purposes. Here, we have provided a comprehensive summary of the functions of HSV-1 non-essential proteins.
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Affiliation(s)
| | | | - Maria Kalamvoki
- Department of Microbiology, Molecular Genetics, and Immunology, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.D.); (H.W.)
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Koch MS, Lawler SE, Chiocca EA. HSV-1 Oncolytic Viruses from Bench to Bedside: An Overview of Current Clinical Trials. Cancers (Basel) 2020; 12:E3514. [PMID: 33255871 PMCID: PMC7760226 DOI: 10.3390/cancers12123514] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/18/2020] [Accepted: 11/23/2020] [Indexed: 12/13/2022] Open
Abstract
Herpes simplex virus 1 (HSV-1) provides a genetic chassis for several oncolytic viruses (OVs) currently in clinical trials. Oncolytic HSV1 (oHSV) have been engineered to reduce neurovirulence and enhance anti-tumor lytic activity and immunogenicity to make them attractive candidates in a range of oncology indications. Successful clinical data resulted in the FDA-approval of the oHSV talimogene laherparepvec (T-Vec) in 2015, and several other variants are currently undergoing clinical assessment and may expand the landscape of future oncologic therapy options. This review offers a detailed overview of the latest results from clinical trials as well as an outlook on newly developed HSV-1 oncolytic variants with improved tumor selectivity, replication, and immunostimulatory capacity and related clinical studies.
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Affiliation(s)
| | - Sean E. Lawler
- Harvey Cushing Neurooncology Research Laboratories, Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (M.S.K.); (E.A.C.)
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Menotti L, Avitabile E. Herpes Simplex Virus Oncolytic Immunovirotherapy: The Blossoming Branch of Multimodal Therapy. Int J Mol Sci 2020; 21:ijms21218310. [PMID: 33167582 PMCID: PMC7664223 DOI: 10.3390/ijms21218310] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 02/06/2023] Open
Abstract
Oncolytic viruses are smart therapeutics against cancer due to their potential to replicate and produce the needed therapeutic dose in the tumor, and to their ability to self-exhaust upon tumor clearance. Oncolytic virotherapy strategies based on the herpes simplex virus are reaching their thirties, and a wide variety of approaches has been envisioned and tested in many different models, and on a range of tumor targets. This huge effort has culminated in the primacy of an oncolytic HSV (oHSV) being the first oncolytic virus to be approved by the FDA and EMA for clinical use, for the treatment of advanced melanoma. The path has just been opened; many more cancer types with poor prognosis await effective and innovative therapies, and oHSVs could provide a promising solution, especially as combination therapies and immunovirotherapies. In this review, we analyze the most recent advances in this field, and try to envision the future ahead of oHSVs.
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Luo Y, Lin C, Zou Y, Ju F, Ren W, Lin Y, Wang Y, Huang X, Liu H, Yu Z, Liu P, Tan G, Yuan Q, Zhang J, Huang C, Xia N. Tumor-targeting oncolytic virus elicits potent immunotherapeutic vaccine responses to tumor antigens. Oncoimmunology 2020; 9:1726168. [PMID: 32117591 PMCID: PMC7028326 DOI: 10.1080/2162402x.2020.1726168] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 12/17/2022] Open
Abstract
Oncolytic viruses represent a promising therapeutic modality, but they have yet to live up to their therapeutic potential. Safety and efficacy concerns impel us to identify least toxic oncolytic agents that would generate durable and multifaceted anti-tumor immune responses to disrupt the tumors. Here we describe a rational engineered oncolytic herpes virus (OVH) that is a selective killer for targeting tumors, has strong safety records, induces complete regression of tumors in multiple tumor models, and elicits potent antitumor immunity. By far, the potential of OVs in promoting the tumor antigen-specific humoral immune responses remains obscure. In this study, we found that effective treatment by OVH induced immunogenic cell death, which facilitates to elicit humoral immune responses. Depletion experiments revealed that B cells were required for maximal antitumor efficacy of oncolytic immunotherapy. Both serum transfer and antibody treatment experiments revealed that endogenous oncolysis-induced antigen-targeting therapeutic antibodies can lead to systemic tumor regression. Our data demonstrate that tumor-targeting immune modulatory properties confer oncolytic OVH virotherapy as potent immunotherapeutic cancer vaccines that can generate specific and efficacious antitumor humoral responses by eliciting endogenous tumor antigen-targeting therapeutic antibodies in situ, resulting in an efficacious and tumor-specific therapeutic effect.
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Affiliation(s)
- Yong Luo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Chaolong Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Yidi Zou
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Fei Ju
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Wenfeng Ren
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Yanhua Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Yale Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Xiaoxuan Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Huiling Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Zeng Yu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Pingguo Liu
- Department of Hepatobiliary Surgery, Zhongshan Hospital Xiamen University, Xiamen, Fujian, China
| | - Guowei Tan
- Department of Neurosurgery, First Affiliated Hospital of Xiamen University, Xiamen, Fujian, China
| | - Quan Yuan
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Chenghao Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian, China
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Liu XQ, Xin HY, Lyu YN, Ma ZW, Peng XC, Xiang Y, Wang YY, Wu ZJ, Cheng JT, Ji JF, Zhong JX, Ren BX, Wang XW, Xin HW. Oncolytic herpes simplex virus tumor targeting and neutralization escape by engineering viral envelope glycoproteins. Drug Deliv 2019; 25:1950-1962. [PMID: 30799657 PMCID: PMC6282442 DOI: 10.1080/10717544.2018.1534895] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Oncolytic herpes simplex viruses (oHSVs) have been approved for clinical usage and become more and more popular for tumor virotherapy. However, there are still many issues for the oHSVs used in clinics and clinical trials. The main issues are the limited anti-tumor effects, intratumor injection, and some side effects. To overcome such challenges, here we review the genetic engineering of the envelope glycoproteins for oHSVs to target tumors specifically, and at the same time we summarize the many neutralization antibodies against the envelope glycoproteins and align the neutralization epitopes with functional domains of the respective glycoproteins for future identification of new functions of the glycoproteins and future engineering of the epitopes to escape from host neutralization.
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Affiliation(s)
- Xiao-Qin Liu
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,b Laboratory of Oncology, Faculty of Medicine, Center for Molecular Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,c Faculty of Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,d Department of Nursing and Medical Imaging Technology , Yangtze University , Jingzhou , Hubei , China
| | - Hong-Yi Xin
- e Star Array Pte Ltd , JTC Medtech Hub , Singapore , Singapore
| | - Yan-Ning Lyu
- f Institute for Infectious Diseases and Endemic Diseases Prevention and Control, Beijing Center for Diseases Prevention and Control , Beijing , China
| | - Zhao-Wu Ma
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,b Laboratory of Oncology, Faculty of Medicine, Center for Molecular Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,c Faculty of Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China
| | - Xiao-Chun Peng
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,b Laboratory of Oncology, Faculty of Medicine, Center for Molecular Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,g Faculty of Medicine, Department of Pathophysiology, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China
| | - Ying Xiang
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,b Laboratory of Oncology, Faculty of Medicine, Center for Molecular Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,c Faculty of Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China
| | - Ying-Ying Wang
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,b Laboratory of Oncology, Faculty of Medicine, Center for Molecular Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,c Faculty of Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China
| | - Zi-Jun Wu
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,b Laboratory of Oncology, Faculty of Medicine, Center for Molecular Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,c Faculty of Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,d Department of Nursing and Medical Imaging Technology , Yangtze University , Jingzhou , Hubei , China
| | - Jun-Ting Cheng
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,b Laboratory of Oncology, Faculty of Medicine, Center for Molecular Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,c Faculty of Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China
| | - Jia-Fu Ji
- h Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Gastrointestinal Surgery , Peking University Cancer Hospital and Institute , Haidian , Beijing , China
| | - Ji-Xin Zhong
- i Cardiovascular Research Institute , Case Western Reserve University , Cleveland , OH , USA
| | - Bo-Xu Ren
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,d Department of Nursing and Medical Imaging Technology , Yangtze University , Jingzhou , Hubei , China
| | - Xian-Wang Wang
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,b Laboratory of Oncology, Faculty of Medicine, Center for Molecular Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,j Faculty of Medicine, Department of Laboratory Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China
| | - Hong-Wu Xin
- a Faculty of Medicine, The Second School of Clinical Medicine , Yangtze University, Nanhuan , Jingzhou , Hubei , China.,b Laboratory of Oncology, Faculty of Medicine, Center for Molecular Medicine, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China.,c Faculty of Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medicine , Yangtze University , Jingzhou , Hubei , China
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Selective Editing of Herpes Simplex Virus 1 Enables Interferon Induction and Viral Replication That Destroy Malignant Cells. J Virol 2019; 93:JVI.01761-18. [PMID: 30404809 DOI: 10.1128/jvi.01761-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 10/28/2018] [Indexed: 12/17/2022] Open
Abstract
Oncolytic herpes simplex virus 1 (HSV-1), devoid of the γ134.5 gene, exerts antitumor activities. However, the oncolytic effects differ, ranging from pronounced to little responses. Although viral and host factors are involved, much remains to be deciphered. Here we report that engineered HSV-1 ΔN146, bearing amino acids 147 to 263 of γ134.5, replicates competently in and lyses malignant cells refractory to the γ134.5 null mutant. Upon infection, ΔN146 precludes phosphorylation of translation initiation factor eIF2α (α subunit of eukaryotic initiation factor 2), ensuring viral protein synthesis. On the other hand, ΔN146 activates interferon (IFN) regulatory factor 3 (IRF3) and IFN expression, known to prime immunity against virus and tumor. Nevertheless, ΔN146 exhibits sustained replication even exposed to exogenous IFN-α. In a 4T1 tumor model, ΔN146 markedly reduces tumor growth and metastasis formation. This coincides with viral replication or T cell infiltration in primary tumors. ΔN146 is undetectable in normal tissues in vivo Targeted HSV-1 editing results in a unique antineoplastic agent that enables inflammation without major interference of viral growth within tumor cells.IMPORTANCE Oncolytic herpes simplex virus 1 is a promising agent for cancer immunotherapy. Due to a complex virus-host interaction, less is clear about what viral signature(s) constitutes a potent oncolytic backbone. Through molecular or genetic dissection, we showed that selective editing of the γ134.5 gene enables viral replication in malignant cells, activation of transcription factor IRF3, and subsequent induction of type I IFN. This translates into profoundly reduced primary tumor growth and metastasis burden in an aggressive breast carcinoma model in vivo Our work reveals a distinct oncolytic platform that is amendable for further development.
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The Current Status and Future Prospects of Oncolytic Viruses in Clinical Trials against Melanoma, Glioma, Pancreatic, and Breast Cancers. Cancers (Basel) 2018; 10:cancers10100356. [PMID: 30261620 PMCID: PMC6210336 DOI: 10.3390/cancers10100356] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 02/06/2023] Open
Abstract
Oncolytic viral therapy has been accepted as a standard immunotherapy since talimogene laherparepvec (T-VEC, Imlygic®) was approved by the Food and Drug Administration (FDA) and European Medicines Agency (EMA) for melanoma treatment in 2015. Various oncolytic viruses (OVs), such as HF10 (Canerpaturev—C-REV) and CVA21 (CAVATAK), are now actively being developed in phase II as monotherapies, or in combination with immune checkpoint inhibitors against melanoma. Moreover, in glioma, several OVs have clearly demonstrated both safety and a promising efficacy in the phase I clinical trials. Additionally, the safety of several OVs, such as pelareorep (Reolysin®), proved their safety and efficacy in combination with paclitaxel in breast cancer patients, but the outcomes of OVs as monotherapy against breast cancer have not provided a clear therapeutic strategy for OVs. The clinical trials of OVs against pancreatic cancer have not yet demonstrated efficacy as either monotherapy or as part of combination therapy. However, there are several oncolytic viruses that have successfully proved their efficacy in different preclinical models. In this review, we mainly focused on the oncolytic viruses that transitioned into clinical trials against melanoma, glioma, pancreatic, and breast cancers. Hence, we described the current status and future prospects of OVs clinical trials against melanoma, glioma, pancreatic, and breast cancers.
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31
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Herpes Simplex Virus 1 γ 134.5 Protein Inhibits STING Activation That Restricts Viral Replication. J Virol 2018; 92:JVI.01015-18. [PMID: 30045990 DOI: 10.1128/jvi.01015-18] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 07/19/2018] [Indexed: 11/20/2022] Open
Abstract
The γ134.5 gene of herpes simplex virus 1 (HSV-1) encodes a virulence factor that promotes viral pathogenesis. Although it perturbs TANK-binding kinase 1 (TBK1) in the complex network of innate immune pathways, the underlying mechanism is obscure. Here we report that HSV-1 γ134.5 targets stimulator of interferon genes (STING) in the intracellular DNA recognition pathway that regulates TBK1 activation. In virus-infected cells the γ134.5 protein associates with and inactivates STING, which leads to downregulation of interferon regulatory factor 3 (IRF3) and IFN responses. Importantly, HSV-1 γ134.5 disrupts translocation of STING from the endoplasmic reticulum to Golgi apparatus, a process necessary to prime cellular immunity. Deletion of γ134.5 or its amino-terminal domain from HSV-1 abolishes the observed inhibitory activities. Consistently, an HSV mutant that lacks functional γ134.5 replicated less efficiently in STING+/+ than in STING-/- mouse embryonic fibroblasts. Moreover, reconstituted expression of human STING in the STING-/- cells activated IRF3 and reduced viral growth. These results suggest that control of the DNA sensing pathway by γ134.5 is advantageous to HSV infection.IMPORTANCE Viral inhibition of innate immunity contributes to herpes simplex virus pathogenesis. Although this complex process involves multiple factors, the underlying events remain unclear. We demonstrate that an HSV virulence factor γ134.5 precludes the activation of STING, a central adaptor in the intracellular DNA sensing pathway. Upon HSV infection, this viral protein engages with and inactivates STING. Consequently, it compromises host immunity and facilitates HSV replication. These observations uncover an HSV mechanism that is likely to mediate viral virulence.
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32
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Fountzilas C, Patel S, Mahalingam D. Review: Oncolytic virotherapy, updates and future directions. Oncotarget 2017; 8:102617-102639. [PMID: 29254276 PMCID: PMC5731986 DOI: 10.18632/oncotarget.18309] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 05/03/2017] [Indexed: 12/14/2022] Open
Abstract
Oncolytic viruses (OVs) are viral strains that can infect and kill malignant cells while spare their normal counterparts. OVs can access cells through binding to receptors on their surface or through fusion with the plasma membrane and establish a lytic cycle in tumors, while leaving normal tissue essentially unharmed. Multiple viruses have been investigated in humans for the past century. IMLYGIC™ (T-VEC/Talimogene Laherparepvec), a genetically engineered Herpes Simplex Virus, is the first OV approved for use in the United States and the European Union for patients with locally advanced or non-resectable melanoma. Although OVs have a favorable toxicity profile and are impressively active anticancer agents in vitro and in vivo the majority of OVs have limited clinical efficacy as a single agent. While a virus-induced antitumor immune response can enhance oncolysis, when OVs are used systemically, the antiviral immune response can prevent the virus reaching the tumor tissue and having a therapeutic effect. Intratumoral administration can provide direct access to tumor tissue and be beneficial in reducing side effects. Immune checkpoint stimulation in tumor tissue has been noted after OV therapy and can be a natural response to viral-induced oncolysis. Also for immune checkpoint inhibition to be effective in treating cancer, an immune response to tumor neoantigens and an inflamed tumor microenvironment are required, both of which treatment with an OV may provide. Therefore, direct and indirect mechanisms of tumor killing provide rationale for clinical trials investigating the combination of OVs other forms of cancer therapy, including immune checkpoint inhibition.
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Affiliation(s)
- Christos Fountzilas
- The University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Sukeshi Patel
- The University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
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Duffy MR, Fisher KD, Seymour LW. Making Oncolytic Virotherapy a Clinical Reality: The European Contribution. Hum Gene Ther 2017; 28:1033-1046. [PMID: 28793793 DOI: 10.1089/hum.2017.112] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Oncolytic viruses (OVs) are quickly moving toward the forefront of modern medicines. The reward for the decades of research invested into developing viral platforms that selectively replicate in and lyse tumor cells while sparking anticancer adaptive immunity is presenting in the form of durable therapeutic responses. While this has certainly been a concerted global effort, in this review for the 25th anniversary of the European Society of Gene and Cell Therapy, we focus on the contributions made by European researchers. Research centers across Europe have held central roles in advancing OVs, from the earliest reports of coincidental viral infections leading to antitumor efficacy, to advanced mechanistic studies, and now through Phase I-III trials to imminent regulatory approvals. While challenges still remain, with limitations in preclinical animal models, antiviral immune clearance, and manufacture restrictions enforced by poor viral yields in certain cases, the field has come a very long way in recent years. Thoughtful mechanistic integration of OVs with standard of care strategies and other newly approved therapies should provide potent novel approaches. Combination with immunotherapeutic regimes holds significant promise, and the ability to arm the viral platform with therapeutic proteins for localized expression at the tumor site provides an opportunity for creating highly effective synergistic treatments and brings a new age of targeted cancer therapeutics.
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Affiliation(s)
- Margaret R Duffy
- Department of Oncology, University of Oxford , Oxford, United Kingdom
| | - Kerry D Fisher
- Department of Oncology, University of Oxford , Oxford, United Kingdom
| | - Len W Seymour
- Department of Oncology, University of Oxford , Oxford, United Kingdom
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34
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De Munck J, Binks A, McNeish IA, Aerts JL. Oncolytic virus-induced cell death and immunity: a match made in heaven? J Leukoc Biol 2017; 102:631-643. [PMID: 28720686 DOI: 10.1189/jlb.5ru0117-040r] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 05/22/2017] [Accepted: 05/22/2017] [Indexed: 12/18/2022] Open
Abstract
Our understanding of the mechanisms responsible for cancer development has increased enormously over the last decades. However, for many cancers, this has not been translated into a significant improvement in overall survival, and overall mortality remains high. Treatment for many malignancies remains based on surgery, chemotherapy, and radiotherapy. Significant progress has been made toward the development of more specific, more potent, and less invasive treatment modalities, but such targeted therapies remain the exception for most cancers. Thus, cancer therapies based on a different mechanism of action should be explored. The immune system plays an important role in keeping tumor growth at bay. However, in many cases, these responses are not strong enough to keep tumor growth under control. Thus, immunotherapy aims to boost the immune system to suppress tumor growth efficiently. This has been demonstrated by the recent successes of immune checkpoint therapy in several cancers. Oncolytic viruses (OVs) are another exciting class of immunotherapy agent. As well as replicating selectively within and killing tumor cells, OVs are able to elicit potent anti-tumor immune responses. Therapeutic vaccination with OVs, also referred to as cancer virotherapy, can thus be tailored to elicit vigorous cellular immune responses and even target individual malignancies in a personalized manner. In this review, we will describe the intricate link among oncolytic virotherapy, tumor immunology, and immunogenic cell death (ICD) and discuss ways to harness optimally their potential for future cancer therapy.
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Affiliation(s)
- Jolien De Munck
- Laboratory for Pharmaceutical Biotechnology and Molecular Biology, Vrije Universiteit Brussel, Brussels, Belgium; and
| | - Alex Binks
- Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Iain A McNeish
- Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Joeri L Aerts
- Laboratory for Pharmaceutical Biotechnology and Molecular Biology, Vrije Universiteit Brussel, Brussels, Belgium; and
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Pease DF, Kratzke RA. Oncolytic Viral Therapy for Mesothelioma. Front Oncol 2017; 7:179. [PMID: 28884088 PMCID: PMC5573749 DOI: 10.3389/fonc.2017.00179] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 08/04/2017] [Indexed: 12/22/2022] Open
Abstract
The limited effectiveness of conventional therapy for malignant pleural mesothelioma demands innovative approaches to this difficult disease. Even with aggressive multimodality treatment of surgery, radiation, and/or chemotherapy, the median survival is only 1–2 years depending on stage and histology. Oncolytic viral therapy has emerged in the last several decades as a rapidly advancing field of immunotherapy studied in a wide spectrum of malignancies. Mesothelioma makes an ideal candidate for studying oncolysis given the frequently localized pattern of growth and pleural location providing access to direct intratumoral injection of virus. Therefore, despite being a relatively uncommon disease, the multitude of viral studies for mesothelioma can provide insight for applying such therapy to other malignancies. This article will begin with a review of the general principles of oncolytic therapy focusing on antitumor efficacy, tumor selectivity, and immune system activation. The second half of this review will detail results of preclinical models and human studies for oncolytic virotherapy in mesothelioma.
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Affiliation(s)
- Daniel F Pease
- Hematology-Oncology-Transplant, University of Minnesota, Minneapolis, MN, United States
| | - Robert A Kratzke
- Hematology-Oncology-Transplant, University of Minnesota, Minneapolis, MN, United States
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36
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Streby KA, Geller JI, Currier MA, Warren PS, Racadio JM, Towbin AJ, Vaughan MR, Triplet M, Ott-Napier K, Dishman DJ, Backus LR, Stockman B, Brunner M, Simpson K, Spavin R, Conner J, Cripe TP. Intratumoral Injection of HSV1716, an Oncolytic Herpes Virus, Is Safe and Shows Evidence of Immune Response and Viral Replication in Young Cancer Patients. Clin Cancer Res 2017; 23:3566-3574. [PMID: 28495911 PMCID: PMC10546618 DOI: 10.1158/1078-0432.ccr-16-2900] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 12/22/2016] [Accepted: 01/13/2017] [Indexed: 02/04/2023]
Abstract
Purpose: HSV1716 is an oncolytic herpes simplex virus-1 (HSV-1) studied in adults via injection into the brain and superficial tumors. To determine the safety of administering HSV1716 to pediatric patients with cancer, we conducted a phase I trial of image-guided injection in young patients with relapsed or refractory extracranial cancers.Experimental Design: We delivered a single dose of 105 to 107 infectious units of HSV1716 via computed tomography-guided intratumoral injection and measured tumor responses by imaging. Patients were eligible for up to three more doses if they achieved stable disease. We monitored HSV-1 serum titers and shedding by PCR and culture.Results: We administered a single dose of HSV1716 to eight patients and two doses to one patient. We did not observe any dose-limiting toxicities. Adverse events attributed to virus included low-grade fever, chills, and mild cytopenias. Six of eight HSV-1 seronegative patients at baseline showed seroconversion on day 28. Six of nine patients had detectable HSV-1 genomes by PCR in peripheral blood appearing on day +4 consistent with de novo virus replication. Two patients had transient focal increases in metabolic activity on 18fluorine-deoxyglucose PET, consistent with inflammatory reactions. In one case, the same geographic region that flared later appeared necrotic on imaging. No patient had an objective response to HSV1716.Conclusions: Intratumoral HSV1716 is safe and well-tolerated without shedding in children and young adults with late-stage, aggressive cancer. Viremia consistent with virus replication and transient inflammatory reactions hold promise for future HSV1716 studies. Clin Cancer Res; 23(14); 3566-74. ©2017 AACR.
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Affiliation(s)
- Keri A Streby
- Division of Hematology/Oncology/BMT, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital Research Institute, Columbus, Ohio
| | - James I Geller
- Division of Oncology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
| | - Mark A Currier
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital Research Institute, Columbus, Ohio
| | - Patrick S Warren
- Department of Radiology, Nationwide Children's Hospital, Columbus, Ohio
| | - John M Racadio
- Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Alexander J Towbin
- Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Michele R Vaughan
- Division of Hematology/Oncology/BMT, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio
| | - Melinda Triplet
- Division of Hematology/Oncology/BMT, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio
| | - Kristy Ott-Napier
- Division of Hematology/Oncology/BMT, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio
| | - Devon J Dishman
- Division of Hematology/Oncology/BMT, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio
| | - Lori R Backus
- Division of Oncology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
| | - Beth Stockman
- Division of Oncology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
| | - Marianne Brunner
- Translational Research Trials Office, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | | | - Robert Spavin
- Virttu Biologics Ltd, Biocity, Scotland, United Kingdom
| | - Joe Conner
- Virttu Biologics Ltd, Biocity, Scotland, United Kingdom
| | - Timothy P Cripe
- Division of Hematology/Oncology/BMT, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio.
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital Research Institute, Columbus, Ohio
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Eissa IR, Naoe Y, Bustos-Villalobos I, Ichinose T, Tanaka M, Zhiwen W, Mukoyama N, Morimoto T, Miyajima N, Hitoki H, Sumigama S, Aleksic B, Kodera Y, Kasuya H. Genomic Signature of the Natural Oncolytic Herpes Simplex Virus HF10 and Its Therapeutic Role in Preclinical and Clinical Trials. Front Oncol 2017; 7:149. [PMID: 28770166 PMCID: PMC5509757 DOI: 10.3389/fonc.2017.00149] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/26/2017] [Indexed: 12/19/2022] Open
Abstract
Oncolytic viruses (OVs) are opening new possibilities in cancer therapy with their unique mechanism of selective replication within tumor cells and triggering of antitumor immune responses. HF10 is an oncolytic herpes simplex virus-1 with a unique genomic structure that has non-engineered deletions and insertions accompanied by frame-shift mutations, in contrast to the majority of engineered OVs. At the genetic level, HF10 naturally lacks the expression of UL43, UL49.5, UL55, UL56, and latency-associated transcripts, and overexpresses UL53 and UL54. In preclinical studies, HF10 replicated efficiently within tumor cells with extensive cytolytic effects and induced increased numbers of activated CD4+ and CD8+ T cells and natural killer cells within the tumor, leading to a significant reduction in tumor growth and prolonged survival rates. Investigator-initiated clinical studies of HF10 have been completed in recurrent breast carcinoma, head and neck cancer, and unresectable pancreatic cancer in Japan. Phase I trials were subsequently completed in refractory superficial cancers and melanoma in the United States. HF10 has been demonstrated to have a high safety margin with low frequency of adverse effects in all treated patients. Interestingly, HF10 antigens were detected in pancreatic carcinoma over 300 days after treatment with infiltration of CD4+ and CD8+ T cells, which enhanced the immune response. To date, preliminary results from a Phase II trial have indicated that HF10 in combination with ipilimumab (anti-CTLA-4) is safe and well tolerated, with high antitumor efficacy. Improvement of the effect of ipilimumab was observed in patients with stage IIIb, IIIc, or IV unresectable or metastatic melanoma. This review provides a concise description of the genomic functional organization of HF10 compared with talimogene laherparepvec. Furthermore, this review focuses on HF10 in cancer treatment as monotherapy as well as in combination therapy through a concise description of all preclinical and clinical data. In addition, we will address approaches for future directions in HF10 studies as cancer therapy.
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Affiliation(s)
- Ibrahim Ragab Eissa
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan.,Department of Surgery II, Graduate School of Medicine, Nagoya University, Nagoya, Japan.,Faculty of Science, Tanta University, Tanta, Egypt
| | - Yoshinori Naoe
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Itzel Bustos-Villalobos
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Toru Ichinose
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | | | - Wu Zhiwen
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan.,Department of Surgery II, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Nobuaki Mukoyama
- Department of Otolaryngology, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Taishi Morimoto
- Department of Surgery II, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Noriyuki Miyajima
- Department of Transplantation and Endocrine Surgery, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Hasegawa Hitoki
- Office of International Affairs, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Seiji Sumigama
- Office of International Affairs, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Branko Aleksic
- Office of International Affairs, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Yasuhiro Kodera
- Department of Surgery II, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Hideki Kasuya
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan
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Moesta AK, Cooke K, Piasecki J, Mitchell P, Rottman JB, Fitzgerald K, Zhan J, Yang B, Le T, Belmontes B, Ikotun OF, Merriam K, Glaus C, Ganley K, Cordover DH, Boden AM, Ponce R, Beers C, Beltran PJ. Local Delivery of OncoVEX mGM-CSF Generates Systemic Antitumor Immune Responses Enhanced by Cytotoxic T-Lymphocyte-Associated Protein Blockade. Clin Cancer Res 2017; 23:6190-6202. [PMID: 28706012 DOI: 10.1158/1078-0432.ccr-17-0681] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 05/27/2017] [Accepted: 07/10/2017] [Indexed: 11/16/2022]
Abstract
Purpose: Talimogene laherparepvec, a new oncolytic immunotherapy, has been recently approved for the treatment of melanoma. Using a murine version of the virus, we characterized local and systemic antitumor immune responses driving efficacy in murine syngeneic models.Experimental Design: The activity of talimogene laherparepvec was characterized against melanoma cell lines using an in vitro viability assay. Efficacy of OncoVEXmGM-CSF (talimogene laherparepvec with the mouse granulocyte-macrophage colony-stimulating factor transgene) alone or in combination with checkpoint blockade was characterized in A20 and CT-26 contralateral murine tumor models. CD8+ depletion, adoptive T-cell transfers, and Enzyme-Linked ImmunoSpot assays were used to study the mechanism of action (MOA) of systemic immune responses.Results: Treatment with OncoVEXmGM-CSF cured all injected A20 tumors and half of contralateral tumors. Viral presence was limited to injected tumors and was not responsible for systemic efficacy. A significant increase in T cells (CD3+/CD8+) was observed in injected and contralateral tumors at 168 hours. Ex vivo analyses showed these cytotoxic T lymphocytes were tumor-specific. Increased neutrophils, monocytes, and chemokines were observed in injected tumors only. Importantly, depletion of CD8+ T cells abolished all systemic efficacy and significantly decreased local efficacy. In addition, immune cell transfer from OncoVEXmGM-CSF-cured mice significantly protected from tumor challenge. Finally, combination of OncoVEXmGM-CSF and checkpoint blockade resulted in increased tumor-specific CD8+ anti-AH1 T cells and systemic efficacy.Conclusions: The data support a dual MOA for OncoVEXmGM-CSF that involves direct oncolysis of injected tumors and activation of a CD8+-dependent systemic response that clears injected and contralateral tumors when combined with checkpoint inhibition. Clin Cancer Res; 23(20); 6190-202. ©2017 AACR.
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Affiliation(s)
- Achim K Moesta
- Oncology Research, Amgen Inc., South San Francisco, California
| | - Keegan Cooke
- Oncology Research, Amgen Inc., Thousand Oaks, California
| | - Julia Piasecki
- Therapeutic Innovation Unit, Amgen Inc., Seattle, Washington
| | - Petia Mitchell
- Oncology Research, Amgen Inc., Thousand Oaks, California
| | | | | | - Jinghui Zhan
- Oncology Research, Amgen Inc., Thousand Oaks, California
| | - Becky Yang
- Oncology Research, Amgen Inc., South San Francisco, California
| | - Tiep Le
- Therapeutic Innovation Unit, Amgen Inc., Seattle, Washington
| | | | | | - Kim Merriam
- Pathology Department, Amgen Inc., Cambridge Massachusetts
| | - Charles Glaus
- Research Imaging Sciences, Amgen Inc., Thousand Oaks, California
| | - Kenneth Ganley
- Pathology Department, Amgen Inc., Cambridge Massachusetts
| | | | - Andrea M Boden
- Pathology Department, Amgen Inc., Cambridge Massachusetts
| | - Rafael Ponce
- Comparative Biology & Safety Sciences, Amgen Inc., South San Francisco, California
| | - Courtney Beers
- Therapeutic Innovation Unit, Amgen Inc., Seattle, Washington
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Abdoli S, Roohvand F, Teimoori-Toolabi L, Shokrgozar MA, Bahrololoumi M, Azadmanesh K. Construction of Various γ34.5 Deleted Fluorescent-Expressing Oncolytic herpes Simplex type 1 (oHSV) for Generation and Isolation of HSV-Based Vectors. IRANIAN BIOMEDICAL JOURNAL 2017; 21:206-17. [PMID: 28525954 PMCID: PMC5459936 DOI: 10.18869/acadpub.ibj.21.4.206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Background Oncolytic herpes simplex virus (oHSV)-based vectors lacking γ34.5 gene, are considered as ideal templates to construct efficient vectors for (targeted) cancer gene therapy. Herein, we reported the construction of three single/dually-flourescence labeled and γ34.5-deleted, recombinant HSV-1 vectors for rapid generation and easy selection/isolation of different HSV-Based vectors. Methods Generation of recombinant viruses was performed with conventional homologous recombination methods using green fluorescent protein (GFP) and BleCherry harboring shuttle vectors. Viruses were isolated by direct fluorescence observation and standard plaque purifying methods and confirmed by PCR and sequencing and flow cytometry. XTT and plaque assay titration were performed on Vero, U87MG, and T98 GBM cell lines. Results We generated three recombinant viruses, HSV-GFP, HSV-GR (Green-Red), and HSV-Red. The HSV-GFP showed two log higher titer (1010 PFU) than wild type (108 PFU). In contrast, HSV-GR and HSV-Red showed one log lower titer (107 PFU) than parental HSV. Cytotoxicity analysis showed that HSV-GR and HSV-Red can lyse target tumor cells at multiplicity of infection of 10 and 1 (P<0.001). Moreover, HSV-GFP showed higher infection potency (98%) in comparison with HSV-GR (82%). Conclusion Our oHSVs provide a simple and an efficient platform for construction and rapid isolation of 2nd and 3rd generation oHSVs by replacing the inserted dyes with transgenes and also for rapid identification via fluorescence activated cell sorting. These vectors can also be used for tracing the efficacy of therapeutic agents on target cells, imaging of neural or tumoral cells in vitro/in vivo and as oncolytic agents in cancer therapy.
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Affiliation(s)
| | - Farzin Roohvand
- Department of Virology, Pasteur Institute of Iran, Tehran, Iran
| | - Ladan Teimoori-Toolabi
- Molecular Medicine Department, Biotechnology Research center, Pasteur institute of Iran, Tehran, Iran
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Yin L, Zhao C, Han J, Li Z, Zhen Y, Xiao R, Xu Z, Sun Y. Antitumor effects of oncolytic herpes simplex virus type 2 against colorectal cancer in vitro and in vivo. Ther Clin Risk Manag 2017; 13:117-130. [PMID: 28223815 PMCID: PMC5308569 DOI: 10.2147/tcrm.s128575] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background The incidence of colorectal cancer (CRC) is on the rise. Furthermore, late-stage diagnoses and limited efficacious treatment options make CRC a complex clinical challenge. Therefore, a new therapeutic regimen with a completely novel therapeutic mechanism is necessary for CRC. In the present study, the therapeutic efficacy of oncolytic herpes simplex virus type 2 (oHSV2) in CRC was assessed in vitro and in vivo. oHSV2 is an oncolytic agent derived from herpes simplex virus type 2 that encodes granulocyte-macrophage colony-stimulating factor. Materials and methods We investigated the cytopathic effects of oHSV2 in CRC cell lines using the MTT assay. Then, cell cycle progression and apoptosis of oHSV2 were examined by flow cytometry. We generated a model of CRC with mouse CRC cell CT26 in BALB/c mice. The antitumor effects and adaptive immune response of oHSV2 were assessed in tumor-bearing mice. The therapeutic efficacy of oHSV2 was compared with the traditional chemotherapeutic agent, 5-fluorouracil. Results The in vitro data showed that oHSV2 infected the CRC cell lines successfully and that the tumor cells formed a significant number of syncytiae postinfection. The oHSV2 killed cancer cells independent of the cell cycle and mainly caused tumor cells necrosis. The in vivo results showed that oHSV2 significantly inhibited tumor growth and prolonged survival of tumor-bearing mice without weight loss. With virus replication, oHSV2 not only resulted in a reduction of myeloid-derived suppressor cells and regulatory T cells in the spleen, but also increased the number of mature dendritic cells in tumor-draining lymph nodes and the effective CD4+T and CD8+T-cells in the tumor microenvironment. Conclusion Our study provides the first evidence that oHSV2 induces cell death in CRC in vitro and in vivo. These findings indicate that oHSV2 is an effective therapeutic cancer candidate that causes an oncolytic effect and recruits adaptive immune responses for an enhanced therapeutic impact, thus providing a potential therapeutic tool for treatment of CRC.
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Affiliation(s)
- Lei Yin
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan; Department of Gastrointestinal Cancer Surgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan; Department of Gastrointestinal Surgery, The Affiliated Hospital of Shandong Academy of Medical Sciences, Jinan
| | - Chunhong Zhao
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Shandong Academy of Medical Sciences, Jinan
| | - Jixia Han
- Department of General Surgery, The Sixth People's Hospital of Jinan, Jinan, People's Republic of China
| | - Zengjun Li
- Department of Gastrointestinal Cancer Surgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan
| | - Yanan Zhen
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Shandong Academy of Medical Sciences, Jinan
| | - Ruixue Xiao
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Shandong Academy of Medical Sciences, Jinan
| | - Zhongfa Xu
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Shandong Academy of Medical Sciences, Jinan
| | - Yanlai Sun
- Department of Gastrointestinal Cancer Surgery, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan
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Bommareddy PK, Patel A, Hossain S, Kaufman HL. Talimogene Laherparepvec (T-VEC) and Other Oncolytic Viruses for the Treatment of Melanoma. Am J Clin Dermatol 2017; 18:1-15. [PMID: 27988837 DOI: 10.1007/s40257-016-0238-9] [Citation(s) in RCA: 196] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Many mammalian viruses have properties that can be commandeered for the treatment of cancer. These characteristics include preferential infection and replication in tumor cells, the initiation of tumor cell lysis, and the induction of innate and adaptive anti-tumor immunity. Furthermore, viruses can be genetically engineered to reduce pathogenicity and increase immunogenicity resulting in minimally toxic therapeutic agents. Talimogene laherparepvec (T-VEC; Imlygic™), is a genetically modified herpes simplex virus, type 1, and is the first oncolytic virus therapy to be approved for the treatment of advanced melanoma by the US FDA. T-VEC is attenuated by the deletion of the herpes neurovirulence viral genes and enhanced for immunogenicity by the deletion of the viral ICP47 gene. Immunogenicity is further supported by expression of the human granulocyte-macrophage colony-stimulating factor (GM-CSF) gene, which helps promote the priming of T cell responses. T-VEC demonstrated significant improvement in durable response rate, objective response rate, and progression-free survival in a randomized phase III clinical trial for patients with advanced melanoma. This review will discuss the optimal selection of patients for such treatment and describe how therapy is optimally delivered. We will also discuss future directions for oncolytic virus immunotherapy, which will likely include combination T-VEC clinical trials, expansion of T-VEC to other types of non-melanoma skin cancers, and renewed efforts at oncolytic virus drug development with other viruses.
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Syncytial Mutations Do Not Impair the Specificity of Entry and Spread of a Glycoprotein D Receptor-Retargeted Herpes Simplex Virus. J Virol 2016; 90:11096-11105. [PMID: 27707922 DOI: 10.1128/jvi.01456-16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 09/12/2016] [Indexed: 12/18/2022] Open
Abstract
Membrane fusion, which is the key process for both initial cell entry and subsequent lateral spread of herpes simplex virus (HSV), requires the four envelope glycoproteins gB, gD, gH, and gL. Syncytial mutations, predominantly mapped to the gB and gK genes, confer hyperfusogenicity on HSV and cause multinucleated giant cells, termed syncytia. Here we asked whether interaction of gD with a cognate entry receptor remains indispensable for initiating membrane fusion of syncytial strains. To address this question, we took advantage of mutant viruses whose viral entry into cells relies on the uniquely specific interaction of an engineered gD with epidermal growth factor receptor (EGFR). We introduced selected syncytial mutations into gB and/or gK of the EGFR-retargeted HSV and found that these mutations, especially when combined, enabled formation of extensive syncytia by human cancer cell lines that express the target receptor; these syncytia were substantially larger than the plaques formed by the parental retargeted HSV strain. We assessed the EGFR dependence of entry and spread separately by using direct entry and infectious center assays, respectively, and we found that the syncytial mutations did not override the receptor specificity of the retargeted viruses at either stage. We discuss the implications of these results for the development of more effective targeted oncolytic HSV vectors. IMPORTANCE Herpes simplex virus (HSV) is investigated not only as a human pathogen but also as a promising agent for oncolytic virotherapy. We previously showed that both the initial entry and subsequent lateral spread of HSV can be retargeted to cells expressing tumor-associated antigens by single-chain antibodies fused to a receptor-binding-deficient envelope glycoprotein D (gD). Here we introduced syncytial mutations into the gB and/or gK gene of gD-retargeted HSVs to determine whether viral tropism remained dependent on the interaction of gD with the target receptor. Entry and spread profiles of the recombinant viruses indicated that gD retargeting does not abolish the hyperfusogenic activity of syncytial mutations and that these mutations do not eliminate the dependence of HSV entry and spread on a specific gD-receptor interaction. These observations suggest that syncytial mutations may be valuable for increasing the tumor-specific spreading of retargeted oncolytic HSV vectors.
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Presage of oncolytic virotherapy for oral cancer with herpes simplex virus. JAPANESE DENTAL SCIENCE REVIEW 2016; 53:53-60. [PMID: 28479936 PMCID: PMC5405200 DOI: 10.1016/j.jdsr.2016.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 10/02/2016] [Accepted: 10/08/2016] [Indexed: 12/30/2022] Open
Abstract
A virus is a pathogenic organism that causes a number of infectious diseases in humans. The oral cavity is the site at which viruses enter and are excreted from the human body. Herpes simplex virus type 1 (HSV-1) produces the primary infectious disease, gingivostomatitis, and recurrent disease, labial herpes. HSV-1 is one of the most extensively investigated viruses used for cancer therapy. In principle, HSV-1 infects epithelial cells and neuronal cells and exhibits cytotoxicity due to its cytopathic effects on these cells. If the replication of the virus occurs in tumor cells, but not normal cells, the virus may be used as an antitumor agent. Therefore, HSV-1 genes have been modified by genetic engineering, and in vitro and in vivo studies with the oncolytic virus have demonstrated its efficiency against head and neck cancer including oral cancer. The oncolytic abilities of other viruses such as adenovirus and reovirus have also been demonstrated. In clinical trials, HSV-1 is the top runner and is now available for the treatment of patients with advanced melanoma. Thus, melanoma in the oral cavity is the target of oncolytic HSV-1. Oncolytic virotherapy is a hopeful and realistic modality for the treatment of oral cancer.
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Grigg C, Blake Z, Gartrell R, Sacher A, Taback B, Saenger Y. Talimogene laherparepvec (T-Vec) for the treatment of melanoma and other cancers. Semin Oncol 2016; 43:638-646. [PMID: 28061981 DOI: 10.1053/j.seminoncol.2016.10.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 10/22/2016] [Indexed: 01/14/2023]
Abstract
Talimogene laherparepvec (T-Vec) is the first live virus to be approved by the US Food and Drug Administration for the treatment of cancer. This engineered version of herpes simplex virus type 1 (HSV-1) is the product of decades of preclinical work aimed at identifying and modifying aspects of the viral genome involved in virulence and immunogenicity. T-Vec preferentially infects and lyses tumor cells and, in some cases, induces a systemic immune response against the tumor. These properties have translated into significant and durable clinical responses, particularly in advanced melanoma. Many unanswered questions remain, including how to augment these clinical responses and which other tumor types may respond to oncolytic therapy. Here, we review the development of T-Vec, our current understanding of its impact on the tumor immune micro-environment, and its safety and efficacy in clinical trials for melanoma and other cancers.
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Affiliation(s)
- Claud Grigg
- Hematology/Oncology, New York-Presbyterian/Columbia University Medical Center, New York, NY
| | - Zoë Blake
- Hematology/Oncology, Columbia University Medical Center, New York, NY
| | - Robyn Gartrell
- Hematology/Oncology, Columbia University Medical Center, New York, NY
| | - Adrian Sacher
- Hematology/Oncology, New York-Presbyterian/Columbia University Medical Center, New York, NY
| | - Bret Taback
- Hematology/Oncology, New York-Presbyterian/Columbia University Medical Center, New York, NY
| | - Yvonne Saenger
- Hematology/Oncology, New York-Presbyterian/Columbia University Medical Center, New York, NY.
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Abstract
For decades, effective cancer gene therapy has been a tantalising prospect; for a therapeutic modality potentially able to elicit highly effective and selective responses, definitive efficacy outcomes have often seemed out of reach. However, steady progress in vector development and accumulated experience from previous clinical studies has finally led the field to its first licensed therapy. Following a pivotal phase III trial, Imlygic (talimogene laherparepvec/T-Vec) received US approval as a treatment for cutaneous and subcutaneous melanoma in October 2015, followed several weeks later by its European authorisation. These represent the first approvals for an oncolytic virotherapy. Imlygic is an advanced-generation herpesvirus-based vector optimised for oncolytic and immunomodulatory activities. Many other oncolytic agents currently remain in development, providing hope that current success will be followed by other diverse vectors that may ultimately come to constitute a new class of clinical anti-cancer agents. In this review, we discuss some of the key oncolytic viral agents developed in the adenovirus and herpesvirus classes, and the prospects for further enhancing their efficacy by combining them with novel immunotherapeutic approaches.
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Affiliation(s)
- Alan E. Bilsland
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Glasgow, G61 1QH, UK
| | | | - T. R. Jeffry Evans
- Institute of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Glasgow, G61 1QH, UK
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Pollack MH, Aston J, Benrashid M, Johnson DB, Puzanov I. Talimogene laherparepvec in advanced melanoma. Expert Opin Orphan Drugs 2016. [DOI: 10.1080/21678707.2016.1186539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Megan H. Pollack
- Department of Pharmaceutical Services, Vanderbilt University Medical Center and Vanderbilt Ingram Cancer Center, Nashville, TN, USA
| | - Jonathan Aston
- Department of Pharmaceutical Services, Vanderbilt University Medical Center and Vanderbilt Ingram Cancer Center, Nashville, TN, USA
| | - Mona Benrashid
- Department of Pharmaceutical Services, Vanderbilt University Medical Center and Vanderbilt Ingram Cancer Center, Nashville, TN, USA
| | - Douglas B. Johnson
- Department of Medicine, Vanderbilt University Medical Center and Vanderbilt Ingram Cancer Center, Nashville, TN, USA
| | - Igor Puzanov
- Department of Medicine, Vanderbilt University Medical Center and Vanderbilt Ingram Cancer Center, Nashville, TN, USA
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Development of an oncolytic HSV vector fully retargeted specifically to cellular EpCAM for virus entry and cell-to-cell spread. Gene Ther 2016; 23:479-88. [DOI: 10.1038/gt.2016.17] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 02/02/2016] [Accepted: 02/09/2016] [Indexed: 12/17/2022]
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Sokolowski NA, Rizos H, Diefenbach RJ. Oncolytic virotherapy using herpes simplex virus: how far have we come? Oncolytic Virother 2015; 4:207-19. [PMID: 27512683 PMCID: PMC4918397 DOI: 10.2147/ov.s66086] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Oncolytic virotherapy exploits the properties of human viruses to naturally cytolysis of cancer cells. The human pathogen herpes simplex virus (HSV) has proven particularly amenable for use in oncolytic virotherapy. The relative safety of HSV coupled with extensive knowledge on how HSV interacts with the host has provided a platform for manipulating HSV to enhance the targeting and killing of human cancer cells. This has culminated in the approval of talimogene laherparepvec for the treatment of melanoma. This review focuses on the development of HSV as an oncolytic virus and where the field is likely to head in the future.
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Affiliation(s)
- Nicolas As Sokolowski
- Centre for Virus Research, Westmead Millennium Institute for Medical Research, The University of Sydney, NSW, Australia
| | - Helen Rizos
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, NSW, Australia
| | - Russell J Diefenbach
- Centre for Virus Research, Westmead Millennium Institute for Medical Research, The University of Sydney, NSW, Australia
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Neuroblastomas vary widely in their sensitivities to herpes simplex virotherapy unrelated to virus receptors and susceptibility. Gene Ther 2015; 23:135-43. [PMID: 26583803 PMCID: PMC4742391 DOI: 10.1038/gt.2015.105] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 10/22/2015] [Accepted: 11/03/2015] [Indexed: 12/16/2022]
Abstract
Although most high-risk neuroblastomas are responsive to chemotherapy, relapse is common and long-term survival is less than 40%, underscoring the need for more effective treatments. We evaluated the responsiveness of 12 neuroblastoma cell lines to the Δγ134.5 attenuated oncolytic HSV, Seprehvir (HSV1716), which is currently used in pediatric phase I trials. We found that entry of Seprehvir in neuroblastoma cells is independent of the expression of nectin-1 and the sum of all four known major HSV entry receptors. We observed varying levels of sensitivity and permissivity to Seprehvir, suggesting that the cellular anti-viral response, not virus entry, is the key determinant of efficacy with this virus. In vivo, we found significant anti-tumor efficacy following Seprehvir treatment, which ranged from 6/10 complete responses in the CHP-134 model to a mild prolonged median survival in the SK-N-AS model. Taken together, these data suggest that anti-tumor efficacy cannot be solely predicted based on in vitro response. Whether or not this discordance holds true for other viruses or tumor types is unknown. Our results also suggest that profiling the expression of known viral entry receptors on neuroblastoma cells may not be entirely predictive of their susceptibility to Seprehvir therapy.
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Cantoni C, Grauwet K, Pietra G, Parodi M, Mingari MC, Maria AD, Favoreel H, Vitale M. Role of NK cells in immunotherapy and virotherapy of solid tumors. Immunotherapy 2015; 7:861-82. [PMID: 26314197 DOI: 10.2217/imt.15.53] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Although natural killer (NK) cells are endowed with powerful cytolytic activity against cancer cells, their role in different therapies against solid tumors has not yet been fully elucidated. Their interactions with various elements of the tumor microenvironment as well as their possible effects in contributing to and/or limiting oncolytic virotherapy render this potential immunotherapeutic tool still difficult to exploit at the bedside. Here, we will review the current literature with the aim of providing new hints to manage this powerful cell type in future innovative therapies, such as the use of NK cells in combination with new cytokines, specific mAbs (inducing ADCC), Tyr-Kinase inhibitors, immunomodulatory drugs and/or the design of oncolytic viruses aimed at optimizing the effect of NK cells in virotherapy.
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Affiliation(s)
- Claudia Cantoni
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy.,Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy.,Istituto Giannina Gaslini, Genova, Italy
| | - Korneel Grauwet
- Laboratory of Immunology, Department of Virology, Parasitology & Immunology, Faculty of Veterinary Medicine, Ghent University, Belgium
| | - Gabriella Pietra
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy.,IRCCS AOU San Martino-IST Genova, Genova, Italy
| | - Monica Parodi
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy
| | - Maria Cristina Mingari
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy.,Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy.,IRCCS AOU San Martino-IST Genova, Genova, Italy
| | - Andrea De Maria
- Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy.,IRCCS AOU San Martino-IST Genova, Genova, Italy.,Department of Health Sciences (DISSAL), University of Genova, Genova, Italy
| | - Herman Favoreel
- Laboratory of Immunology, Department of Virology, Parasitology & Immunology, Faculty of Veterinary Medicine, Ghent University, Belgium
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