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Vazaios K, van Berkum RE, Calkoen FG, van der Lugt J, Hulleman E. OV Modulators of the Paediatric Brain TIME: Current Status, Combination Strategies, Limitations and Future Directions. Int J Mol Sci 2024; 25:5007. [PMID: 38732225 PMCID: PMC11084613 DOI: 10.3390/ijms25095007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/26/2024] [Accepted: 05/01/2024] [Indexed: 05/13/2024] Open
Abstract
Oncolytic viruses (OVs) are characterised by their preference for infecting and replicating in tumour cells either naturally or after genetic modification, resulting in oncolysis. Furthermore, OVs can elicit both local and systemic anticancer immune responses while specifically infecting and lysing tumour cells. These characteristics render them a promising therapeutic approach for paediatric brain tumours (PBTs). PBTs are frequently marked by a cold tumour immune microenvironment (TIME), which suppresses immunotherapies. Recent preclinical and clinical studies have demonstrated the capability of OVs to induce a proinflammatory immune response, thereby modifying the TIME. In-depth insights into the effect of OVs on different cell types in the TIME may therefore provide a compelling basis for using OVs in combination with other immunotherapy modalities. However, certain limitations persist in our understanding of oncolytic viruses' ability to regulate the TIME to enhance anti-tumour activity. These limitations primarily stem from the translational limitations of model systems, the difficulties associated with tracking reliable markers of efficacy throughout the course of treatment and the role of pre-existing viral immunity. In this review, we describe the different alterations observed in the TIME in PBTs due to OV treatment, combination therapies of OVs with different immunotherapies and the hurdles limiting the development of effective OV therapies while suggesting future directions based on existing evidence.
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Affiliation(s)
| | | | | | | | - Esther Hulleman
- Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands; (K.V.); (F.G.C.); (J.v.d.L.)
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2
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Groeneveldt C, Kinderman P, Griffioen L, Rensing O, Labrie C, van den Wollenberg DJ, Hoeben RC, Coffey M, Loghmani H, Verdegaal EM, Welters MJ, van der Burg SH, van Hall T, van Montfoort N. Neutralizing Antibodies Impair the Oncolytic Efficacy of Reovirus but Permit Effective Combination with T cell-Based Immunotherapies. Cancer Immunol Res 2024; 12:334-349. [PMID: 38194598 PMCID: PMC10911706 DOI: 10.1158/2326-6066.cir-23-0480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 10/31/2023] [Accepted: 01/05/2024] [Indexed: 01/11/2024]
Abstract
Reovirus type 3 Dearing (Reo), manufactured for clinical application as pelareorep, is an attractive anticancer agent under evaluation in multiple phase 2 clinical trials for the treatment of solid tumors. It elicits its anticancer efficacy by inducing both oncolysis and intratumoral T-cell influx. Because most people have been preexposed to Reo, neutralizing antibodies (NAb) are prevalent in patients with cancer and might present a barrier to effective Reo therapy. Here, we tested serum of patients with cancer and healthy controls (n = 100) and confirmed that Reo NAbs are present in >80% of individuals. To investigate the effect of NAbs on both the oncolytic and the immunostimulatory efficacy of Reo, we established an experimental mouse model with Reo preexposure. The presence of preexposure-induced NAbs reduced Reo tumor infection and prevented Reo-mediated control of tumor growth after intratumoral Reo administration. In B cell-deficient mice, the lack of NAbs provided enhanced tumor growth control after Reo monotherapy, indicating that NAbs limit the oncolytic capacity of Reo. In immunocompetent mice, intratumoral T-cell influx was not affected by the presence of preexposure-induced NAbs and consequently, combinatorial immunotherapy strategies comprising Reo and T-cell engagers or checkpoint inhibitors remained effective in these settings, also after a clinically applied regimen of multiple intravenous pelareorep administrations. Altogether, our data indicate that NAbs hamper the oncolytic efficacy of Reo, but not its immunotherapeutic capacity. Given the high prevalence of seropositivity for Reo in patients with cancer, our data strongly advocate for the application of Reo as part of T cell-based immunotherapeutic strategies.
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Affiliation(s)
- Christianne Groeneveldt
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands
| | - Priscilla Kinderman
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, the Netherlands
| | - Lisa Griffioen
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands
| | - Olivia Rensing
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, the Netherlands
| | - Camilla Labrie
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Rob C. Hoeben
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Matt Coffey
- Oncolytics Biotech Incorporated, Calgary, Canada
| | | | - Els M.E. Verdegaal
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands
| | - Marij J.P. Welters
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands
| | - Sjoerd H. van der Burg
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands
| | - Thorbald van Hall
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands
| | - Nadine van Montfoort
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, the Netherlands
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3
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Khushalani NI, Harrington KJ, Melcher A, Bommareddy PK, Zamarin D. Breaking the barriers in cancer care: The next generation of herpes simplex virus-based oncolytic immunotherapies for cancer treatment. Mol Ther Oncolytics 2023; 31:100729. [PMID: 37841530 PMCID: PMC10570124 DOI: 10.1016/j.omto.2023.100729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023] Open
Abstract
Since the US Food and Drug Administration first approved talimogene laherparepvec for the treatment of melanoma in 2015, the field of oncolytic immunotherapy (OI) has rapidly evolved. There are numerous ongoing clinical studies assessing the clinical activity of OIs across a wide range of tumor types. Further understanding of the mechanisms underlying the anti-tumor immune response has led to the development of OIs with improved immune-mediated preclinical efficacy. In this review, we discuss the key approaches for developing the next generation of herpes simplex virus-based OIs. Modifications to the viral genome and incorporation of transgenes to promote safety, tumor-selective replication, and immune stimulation are reviewed. We also review the advantages and disadvantages of intratumoral versus intravenous administration, summarize clinical evidence supporting the use of OIs as a strategy to overcome resistance to immune checkpoint blockade, and consider emerging opportunities to improve OI efficacy in the combination setting.
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4
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Cristi F, Walters M, Narayan N, Agopsowicz K, Hitt MM, Shmulevitz M. Improved oncolytic activity of a reovirus mutant that displays enhanced virus spread due to reduced cell attachment. Mol Ther Oncolytics 2023; 31:100743. [PMID: 38033400 PMCID: PMC10685048 DOI: 10.1016/j.omto.2023.100743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
Wild-type reovirus serotype 3 Dearing (T3wt), a non-pathogenic intestinal virus, has shown promise as a cancer therapy in clinical trials, but it would benefit from an increased potency. Given that T3wt is naturally adapted to the intestinal environment (rather than tumors), we genetically modified reovirus to improve its infectivity in cancer cells. Various reovirus mutants were created, and their oncolytic potency was evaluated in vitro using plaque size as a measure of virus fitness in cancer cells. Notably, Super Virus 5 (SV5), carrying five oncolytic mutations, displayed the largest plaques in breast cancer cells among the mutants tested, indicating the potential for enhancing oncolytic potency through the combination of mutations. Furthermore, in a HER2+ murine breast cancer model, mice treated with SV5 exhibited superior tumor reduction and increased survival compared with those treated with PBS or T3wt. Intriguingly, SV5 did not replicate faster than T3wt in cultured cells but demonstrated a farther spread relative to T3wt, attributed to its reduced attachment to cancer cells. These findings highlight the significance of increased virus spread as a crucial mechanism for improving oncolytic virus activity. Thus, genetic modifications of reovirus hold the potential for augmenting its efficacy in cancer therapy.
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Affiliation(s)
- Francisca Cristi
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton AB T6G 2E1, Canada
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton AB T6G 2E1, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton AB T6G 2E1, Canada
| | - Maiah Walters
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton AB T6G 2E1, Canada
| | - Nashae Narayan
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton AB T6G 2E1, Canada
| | - Kate Agopsowicz
- Department of Oncology, University of Alberta, Edmonton AB T6G 1Z2, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton AB T6G 2E1, Canada
| | - Mary M. Hitt
- Department of Oncology, University of Alberta, Edmonton AB T6G 1Z2, Canada
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton AB T6G 2E1, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton AB T6G 2E1, Canada
| | - Maya Shmulevitz
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton AB T6G 2E1, Canada
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton AB T6G 2E1, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton AB T6G 2E1, Canada
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5
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Siew ZY, Loh A, Segeran S, Leong PP, Voon K. Oncolytic Reoviruses: Can These Emerging Zoonotic Reoviruses Be Tamed and Utilized? DNA Cell Biol 2023. [PMID: 37015068 DOI: 10.1089/dna.2022.0561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023] Open
Abstract
Orthoreovirus is a nonenveloped double-stranded RNA virus under the Reoviridae family. This group of viruses, especially mammalian orthoreovirus (MRV), are reported with great therapeutic values due to their oncolytic effects. In this review, the life cycle and oncolytic effect of MRV and a few emerging reoviruses were summarized. This article also highlights the challenges and strategies of utilizing MRV and the emerging reoviruses, avian orthoreovirus (ARV) and pteropine orthoreovirus (PRV), as oncolytic viruses (OVs). Besides, the emergence of potential ARV and PRV as OVs were discussed in comparison to MRV. Finally, the risk of reovirus as zoonosis or reverse zoonosis (zooanthroponosis) were debated, and concerns were raised in this article, which warrant continue surveillance of reovirus (MRV, ARV, and PRV) in animals, humans, and the environment.
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Affiliation(s)
- Zhen Yun Siew
- School of Pharmacy, University of Nottingham Malaysia, Semenyih, Malaysia
| | - Alson Loh
- School of Postgraduate Studies, International Medical University, Kuala Lumpur, Malaysia
| | - Sharrada Segeran
- School of Medicine, Australian National University, Canberra, Australia
| | - Pooi Pooi Leong
- Faculty of Medicine and Health Sciences, Universiti of Tunku Abdul Rahman, Kajang, Malaysia
| | - Kenny Voon
- School of Pharmacy, University of Nottingham Malaysia, Semenyih, Malaysia
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6
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Abstract
Oncolytic viruses (OVs) are an emerging class of cancer therapeutics that offer the benefits of selective replication in tumour cells, delivery of multiple eukaryotic transgene payloads, induction of immunogenic cell death and promotion of antitumour immunity, and a tolerable safety profile that largely does not overlap with that of other cancer therapeutics. To date, four OVs and one non-oncolytic virus have been approved for the treatment of cancer globally although talimogene laherparepvec (T-VEC) remains the only widely approved therapy. T-VEC is indicated for the treatment of patients with recurrent melanoma after initial surgery and was initially approved in 2015. An expanding body of data on the clinical experience of patients receiving T-VEC is now becoming available as are data from clinical trials of various other OVs in a range of other cancers. Despite increasing research interest, a better understanding of the underlying biology and pharmacology of OVs is needed to enable the full therapeutic potential of these agents in patients with cancer. In this Review, we summarize the available data and provide guidance on optimizing the use of OVs in clinical practice, with a focus on the clinical experience with T-VEC. We describe data on selected novel OVs that are currently in clinical development, either as monotherapies or as part of combination regimens. We also discuss some of the preclinical, clinical and regulatory hurdles that have thus far limited the development of OVs.
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7
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The Dilemma of HSV-1 Oncolytic Virus Delivery: The Method Choice and Hurdles. Int J Mol Sci 2023; 24:ijms24043681. [PMID: 36835091 PMCID: PMC9962028 DOI: 10.3390/ijms24043681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/03/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023] Open
Abstract
Oncolytic viruses (OVs) have emerged as effective gene therapy and immunotherapy drugs. As an important gene delivery platform, the integration of exogenous genes into OVs has become a novel path for the advancement of OV therapy, while the herpes simplex virus type 1 (HSV-1) is the most commonly used. However, the current mode of administration of HSV-1 oncolytic virus is mainly based on the tumor in situ injection, which limits the application of such OV drugs to a certain extent. Intravenous administration offers a solution to the systemic distribution of OV drugs but is ambiguous in terms of efficacy and safety. The main reason is the synergistic role of innate and adaptive immunity of the immune system in the response against the HSV-1 oncolytic virus, which is rapidly cleared by the body's immune system before it reaches the tumor, a process that is accompanied by side effects. This article reviews different administration methods of HSV-1 oncolytic virus in the process of tumor treatment, especially the research progress in intravenous administration. It also discusses immune constraints and solutions of intravenous administration with the intent to provide new insights into HSV-1 delivery for OV therapy.
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8
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Ma R, Li Z, Chiocca EA, Caligiuri MA, Yu J. The emerging field of oncolytic virus-based cancer immunotherapy. Trends Cancer 2023; 9:122-139. [PMID: 36402738 PMCID: PMC9877109 DOI: 10.1016/j.trecan.2022.10.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/03/2022] [Accepted: 10/04/2022] [Indexed: 11/18/2022]
Abstract
Oncolytic viruses (OVs) provide novel and promising therapeutic options for patients with cancers resistant to traditional therapies. Natural or genetically modified OVs are multifaceted tumor killers. They directly lyse tumor cells while sparing normal cells, and indirectly potentiate antitumor immunity by releasing antigens and activating inflammatory responses in the tumor microenvironment. However, some limitations, such as limited penetration of OVs into tumors, short persistence, and the host antiviral immune response, are impeding the broad translation of oncolytic virotherapy into the clinic. If these challenges can be overcome, combination therapies, such as OVs plus immune checkpoint blockade (ICB), chimeric antigen receptor (CAR) T cells, or CAR natural killer (NK) cells, may provide powerful therapeutic platforms in the clinic.
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Affiliation(s)
- Rui Ma
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Los Angeles, CA 91010, USA; Laboratory of Molecular Oncology, Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Zhenlong Li
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Los Angeles, CA 91010, USA
| | - E Antonio Chiocca
- Harvey Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Michael A Caligiuri
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Los Angeles, CA 91010, USA; Hematologic Malignancies Research Institute, City of Hope National Medical Center, Los Angeles, CA 91010, USA; Comprehensive Cancer Center, City of Hope, Los Angeles, CA 91010, USA
| | - Jianhua Yu
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Los Angeles, CA 91010, USA; Hematologic Malignancies Research Institute, City of Hope National Medical Center, Los Angeles, CA 91010, USA; Comprehensive Cancer Center, City of Hope, Los Angeles, CA 91010, USA; Department of Immuno-Oncology, Beckman Research Institute, Los Angeles, CA 91010, USA.
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9
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Qi Z, Long X, Liu J, Cheng P. Glioblastoma microenvironment and its reprogramming by oncolytic virotherapy. Front Cell Neurosci 2022; 16:819363. [PMID: 36159398 PMCID: PMC9507431 DOI: 10.3389/fncel.2022.819363] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 08/17/2022] [Indexed: 11/13/2022] Open
Abstract
Glioblastoma (GBM), a highly aggressive form of brain tumor, responds poorly to current conventional therapies, including surgery, radiation therapy, and systemic chemotherapy. The reason is that the delicate location of the primary tumor and the existence of the blood-brain barrier limit the effectiveness of traditional local and systemic therapies. The immunosuppressive status and multiple carcinogenic pathways in the complex GBM microenvironment also pose challenges for immunotherapy and single-targeted therapy. With an improving understanding of the GBM microenvironment, it has become possible to consider the immunosuppressive and highly angiogenic GBM microenvironment as an excellent opportunity to improve the existing therapeutic efficacy. Oncolytic virus therapy can exert antitumor effects on various components of the GBM microenvironment. In this review, we have focused on the current status of oncolytic virus therapy for GBM and the related literature on antitumor mechanisms. Moreover, the limitations of oncolytic virus therapy as a monotherapy and future directions that may enhance the field have also been discussed.
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Affiliation(s)
- Zhongbing Qi
- Department of State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xiangyu Long
- Department of Biotherapy, Cancer Center, West China Hospital of Sichuan University, Chengdu, China
- Department of Oncology, West China Guang’an Hospital, Sichuan University, Guangan, China
| | - Jiyan Liu
- Department of Biotherapy, Cancer Center, West China Hospital of Sichuan University, Chengdu, China
- *Correspondence: Ping Cheng Jiyan Liu
| | - Ping Cheng
- Department of State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Ping Cheng Jiyan Liu
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10
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Ghajar-Rahimi G, Kang KD, Totsch SK, Gary S, Rocco A, Blitz S, Kachurak K, Chambers MR, Li R, Beierle EA, Bag A, Johnston JM, Markert JM, Bernstock JD, Friedman GK. Clinical advances in oncolytic virotherapy for pediatric brain tumors. Pharmacol Ther 2022; 239:108193. [PMID: 35487285 DOI: 10.1016/j.pharmthera.2022.108193] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/10/2022] [Accepted: 04/21/2022] [Indexed: 10/18/2022]
Abstract
Malignant brain tumors constitute nearly one-third of cancer diagnoses in children and have recently surpassed hematologic malignancies as the most lethal neoplasm in the pediatric population. Outcomes for children with brain tumors are unacceptably poor and current standards of care-surgical resection, chemotherapy, and radiation-are associated with significant long-term morbidity. Oncolytic virotherapy has emerged as a promising immunotherapy for the treatment of brain tumors. While the majority of brain tumor clinical trials utilizing oncolytic virotherapy have been in adults, five viruses are being tested in pediatric brain tumor clinical trials: herpes simplex virus (G207), reovirus (pelareorep/Reolysin), measles virus (MV-NIS), poliovirus (PVSRIPO), and adenovirus (DNX-2401, AloCELYVIR). Herein, we review past and current pediatric immunovirotherapy brain tumor trials including the relevant preclinical and clinical research that contributed to their development. We describe mechanisms by which the viruses may overcome barriers in treating pediatric brain tumors, examine challenges associated with achieving effective, durable responses, highlight unique aspects and successes of the trials, and discuss future directions of immunovirotherapy research for the treatment of pediatric brain tumors.
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Affiliation(s)
- Gelare Ghajar-Rahimi
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Kyung-Don Kang
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Stacie K Totsch
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Sam Gary
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Abbey Rocco
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Kara Kachurak
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - M R Chambers
- Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rong Li
- Department of Pathology, University of Alabama at Birmingham, and Children's of Alabama, Birmingham, AL, USA
| | - Elizabeth A Beierle
- Division of Pediatric Surgery, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Asim Bag
- Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - James M Johnston
- Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - James M Markert
- Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Joshua D Bernstock
- Department of Neurosurgery, Brigham and Women's Hospital and Boston Children's Hospital, Harvard University, Boston, MA, USA.
| | - Gregory K Friedman
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA.
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11
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Naumenko VA, Stepanenko AA, Lipatova AV, Vishnevskiy DA, Chekhonin VP. Infection of non-cancer cells: A barrier or support for oncolytic virotherapy? MOLECULAR THERAPY - ONCOLYTICS 2022; 24:663-682. [PMID: 35284629 PMCID: PMC8898763 DOI: 10.1016/j.omto.2022.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Oncolytic viruses are designed to specifically target cancer cells, sparing normal cells. Although numerous studies demonstrate the ability of oncolytic viruses to infect a wide range of non-tumor cells, the significance of this phenomenon for cancer virotherapy is poorly understood. To fill the gap, we summarize the data on infection of non-cancer targets by oncolytic viruses with a special focus on tumor microenvironment and secondary lymphoid tissues. The review aims to address two major questions: how do attenuated viruses manage to infect normal cells, and whether it is of importance for oncolytic virotherapy.
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Affiliation(s)
- Victor A. Naumenko
- V. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow 119034, Russia
- Corresponding author Victor A. Naumenko, PhD, V. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow 119034, Russia.
| | - Aleksei A. Stepanenko
- V. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow 119034, Russia
- Department of Medical Nanobiotechnology, N.I Pirogov Russian National Research Medical University, Moscow 117997, Russia
| | - Anastasiia V. Lipatova
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Daniil A. Vishnevskiy
- V. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow 119034, Russia
| | - Vladimir P. Chekhonin
- V. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow 119034, Russia
- Department of Medical Nanobiotechnology, N.I Pirogov Russian National Research Medical University, Moscow 117997, Russia
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12
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Yang L, Gu X, Yu J, Ge S, Fan X. Oncolytic Virotherapy: From Bench to Bedside. Front Cell Dev Biol 2021; 9:790150. [PMID: 34901031 PMCID: PMC8662562 DOI: 10.3389/fcell.2021.790150] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/12/2021] [Indexed: 01/23/2023] Open
Abstract
Oncolytic viruses are naturally occurring or genetically engineered viruses that can replicate preferentially in tumor cells and inhibit tumor growth. These viruses have been considered an effective anticancer strategy in recent years. They mainly function by direct oncolysis, inducing an anticancer immune response and expressing exogenous effector genes. Their multifunctional characteristics indicate good application prospects as cancer therapeutics, especially in combination with other therapies, such as radiotherapy, chemotherapy and immunotherapy. Therefore, it is necessary to comprehensively understand the utility of oncolytic viruses in cancer therapeutics. Here, we review the characteristics, antitumor mechanisms, clinical applications, deficiencies and associated solutions, and future prospects of oncolytic viruses.
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Affiliation(s)
- Ludi Yang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Xiang Gu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Jie Yu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Shengfang Ge
- Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Xianqun Fan
- Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
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13
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Hofman L, Lawler SE, Lamfers MLM. The Multifaceted Role of Macrophages in Oncolytic Virotherapy. Viruses 2021; 13:v13081570. [PMID: 34452439 PMCID: PMC8402704 DOI: 10.3390/v13081570] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 12/16/2022] Open
Abstract
One of the cancer hallmarks is immune evasion mediated by the tumour microenvironment (TME). Oncolytic virotherapy is a form of immunotherapy based on the application of oncolytic viruses (OVs) that selectively replicate in and induce the death of tumour cells. Virotherapy confers reciprocal interaction with the host’s immune system. The aim of this review is to explore the role of macrophage-mediated responses in oncolytic virotherapy efficacy. The approach was to study current scientific literature in this field in order to give a comprehensive overview of the interactions of OVs and macrophages and their effects on the TME. The innate immune system has a central influence on the TME; tumour-associated macrophages (TAMs) generally have immunosuppressive, tumour-supportive properties. In the context of oncolytic virotherapy, macrophages were initially thought to predominantly contribute to anti-viral responses, impeding viral spread. However, macrophages have now also been found to mediate transport of OV particles and, after TME infiltration, to be subjected to a phenotypic shift that renders them pro-inflammatory and tumour-suppressive. These TAMs can present tumour antigens leading to a systemic, durable, adaptive anti-tumour immune response. After phagocytosis, they can recirculate carrying tissue-derived proteins, which potentially enables the monitoring of OV replication in the TME. Their role in therapeutic efficacy is therefore multifaceted, but based on research applying relevant, immunocompetent tumour models, macrophages are considered to have a central function in anti-cancer activity. These novel insights hold important clinical implications. When optimised, oncolytic virotherapy, mediating multifactorial inhibition of cancer immune evasion, could contribute to improved patient survival.
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Affiliation(s)
- Laura Hofman
- Department of Neurosurgery, Brain Tumor Center, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands;
| | - Sean E. Lawler
- Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA;
| | - Martine L. M. Lamfers
- Department of Neurosurgery, Brain Tumor Center, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands;
- Correspondence: ; Tel.: +31-010-703-5993
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Roulstone V, Mansfield D, Harris RJ, Twigger K, White C, de Bono J, Spicer J, Karagiannis SN, Vile R, Pandha H, Melcher A, Harrington K. Antiviral antibody responses to systemic administration of an oncolytic RNA virus: the impact of standard concomitant anticancer chemotherapies. J Immunother Cancer 2021; 9:jitc-2021-002673. [PMID: 34301814 PMCID: PMC8728387 DOI: 10.1136/jitc-2021-002673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2021] [Indexed: 01/19/2023] Open
Abstract
Background Oncolytic reovirus therapy for cancer induces a typical antiviral response to this RNA virus, including neutralizing antibodies. Concomitant treatment with cytotoxic chemotherapies has been hypothesized to improve the therapeutic potential of the virus. Chemotherapy side effects can include immunosuppression, which may slow the rate of the antiviral antibody response, as well as potentially make the patient more vulnerable to viral infection. Method Reovirus neutralizing antibody data were aggregated from separate phase I clinical trials of reovirus administered as a single agent or in combination with gemcitabine, docetaxel, carboplatin and paclitaxel doublet or cyclophosphamide. In addition, the kinetics of individual antibody isotypes were profiled in sera collected in these trials. Results These data demonstrate preserved antiviral antibody responses, with only moderately reduced kinetics with some drugs, most notably gemcitabine. All patients ultimately produced an effective neutralizing antibody response. Conclusion Patients’ responses to infection by reovirus are largely unaffected by the concomitant drug treatments tested, providing confidence that RNA viral treatment or infection is compatible with standard of care treatments.
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Affiliation(s)
| | - David Mansfield
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - Robert J Harris
- St John's Institute of Dermatology, Guy's Hospital, London, UK
| | - Katie Twigger
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - Christine White
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - Johann de Bono
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - James Spicer
- St John's Institute of Dermatology, Guy's Hospital, London, UK
| | | | - Richard Vile
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Hardev Pandha
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
| | - Alan Melcher
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
| | - Kevin Harrington
- Radiotherapy and Imaging, The Institute of Cancer Research, London, UK
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15
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Vandeborne L, Pantziarka P, Van Nuffel AMT, Bouche G. Repurposing Infectious Diseases Vaccines Against Cancer. Front Oncol 2021; 11:688755. [PMID: 34055652 PMCID: PMC8155725 DOI: 10.3389/fonc.2021.688755] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 04/27/2021] [Indexed: 11/30/2022] Open
Abstract
Vaccines used to prevent infections have long been known to stimulate immune responses to cancer as illustrated by the approval of the Bacillus Calmette-Guérin (BCG) vaccine to treat bladder cancer since the 1970s. The recent approval of immunotherapies has rejuvenated this research area with reports of anti-tumor responses with existing infectious diseases vaccines used as such, either alone or in combination with immune checkpoint inhibitors. Here, we have reviewed and summarized research activities using approved vaccines to treat cancer. Data supporting a cancer therapeutic use was found for 16 vaccines. For 10 (BCG, diphtheria, tetanus, human papillomavirus, influenza, measles, pneumococcus, smallpox, typhoid and varicella-zoster), clinical trials have been conducted or are ongoing. Within the remaining 6, preclinical evidence supports further evaluation of the rotavirus, yellow fever and pertussis vaccine in carefully designed clinical trials. The mechanistic evidence for the cholera vaccine, combined with the observational data in colorectal cancer, is also supportive of clinical translation. There is limited data for the hepatitis B and mumps vaccine (without measles vaccine). Four findings are worth highlighting: the superiority of intravesical typhoid vaccine instillations over BCG in a preclinical bladder cancer model, which is now the subject of a phase I trial; the perioperative use of the influenza vaccine to limit and prevent the natural killer cell dysfunction induced by cancer surgery; objective responses following intratumoral injections of measles vaccine in cutaneous T-cell lymphoma; objective responses induced by human papillomavirus vaccine in cutaneous squamous cell carcinoma. All vaccines are intended to induce or improve an anti-tumor (immune) response. In addition to the biological and immunological mechanisms that vary between vaccines, the mode of administration and sequence with other (immuno-)therapies warrant more attention in future research.
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16
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Mozaffari Nejad AS, Noor T, Munim ZH, Alikhani MY, Ghaemi A. A bibliometric review of oncolytic virus research as a novel approach for cancer therapy. Virol J 2021; 18:98. [PMID: 33980264 PMCID: PMC8113799 DOI: 10.1186/s12985-021-01571-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 05/03/2021] [Indexed: 02/06/2023] Open
Abstract
Background In recent years, oncolytic viruses (OVs) have drawn attention as a novel therapy to various types of cancers, both in clinical and preclinical cancer studies all around the world. Consequently, researchers have been actively working on enhancing cancer therapy since the early twentieth century. This study presents a systematic review of the literature on OVs, discusses underlying research clusters and, presents future directions of OVs research. Methods A total of 1626 published articles related to OVs as cancer therapy were obtained from the Web of Science (WoS) database published between January 2000 and March 2020. Various aspects of OVs research, including the countries/territories, institutions, journals, authors, citations, research areas, and content analysis to find trending and emerging topics, were analysed using the bibliometrix package in the R-software. Results In terms of the number of publications, the USA based researchers were the most productive (n = 611) followed by Chinese (n = 197), and Canadian (n = 153) researchers. The Molecular Therapy journal ranked first both in terms of the number of publications (n = 133) and local citations (n = 1384). The most prominent institution was Mayo Clinic from the USA (n = 117) followed by the University of Ottawa from Canada (n = 72), and the University of Helsinki from Finland (n = 63). The most impactful author was Bell J.C with the highest number of articles (n = 67) and total local citations (n = 885). The most impactful article was published in the Cell journal. In addition, the latest OVs research mainly builds on four research clusters. Conclusion The domain of OVs research has increased at a rapid rate from 2000 to 2020. Based on the synthesis of reviewed studies, adenovirus, herpes simplex virus, reovirus, and Newcastle disease virus have shown potent anti-cancer activity. Developed countries such as the USA, Canada, the UK, and Finland were the most productive, hence, contributed most to this field. Further collaboration will help improve the clinical research translation of this therapy and bring benefits to cancer patients worldwide.
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Affiliation(s)
| | - Tehjeeb Noor
- Faculty of Medicine, University of Bergen, Horten, Norway
| | - Ziaul Haque Munim
- Faculty of Technology, Natural and Maritime Sciences, University of South-Eastern Norway, Horten, Norway
| | - Mohammad Yousef Alikhani
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Amir Ghaemi
- Department of Influenza and Other Respiratory Viruses, Pasteur Institute of Iran, Tehran, Iran.
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17
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Moaven O, W Mangieri C, A Stauffer J, Anastasiadis PZ, Borad MJ. Evolving Role of Oncolytic Virotherapy: Challenges and Prospects in Clinical Practice. JCO Precis Oncol 2021; 5:PO.20.00395. [PMID: 34250386 DOI: 10.1200/po.20.00395] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/04/2021] [Accepted: 01/27/2021] [Indexed: 12/23/2022] Open
Abstract
Selective oncotropism and cytolytic activity against tumors have made certain viruses subject to investigation as novel treatment modalities. However, monotherapy with oncolytic viruses (OVs) has shown limited success and modest clinical benefit. The capacity to genetically engineer OVs makes them a desirable platform to design complementary treatment modalities to overcome the existing treatment options' shortcomings. In recent years, our knowledge of interactions of the tumors with the immune system has expanded profoundly. There is a growing body of literature supporting immunomodulatory roles for OVs. The concept of bioengineering these platforms to induce the desired immune response and complement the current immunotherapeutic modalities to make immune-resistant tumors responsive to immunotherapy is under investigation in preclinical and early clinical trials. This review provides an overview of attempts to optimize oncolytic virotherapy as essential components of the multimodality anticancer therapeutic approach and discusses the challenges in translation to clinical practice.
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Affiliation(s)
- Omeed Moaven
- Section of Surgical Oncology, Department of Surgery, Mayo Clinic Florida, Jacksonville, FL
| | - Christopher W Mangieri
- Section of Surgical Oncology, Department of Surgery, Wake Forest University, Winston-Salem, NC
| | - John A Stauffer
- Section of Surgical Oncology, Department of Surgery, Mayo Clinic Florida, Jacksonville, FL
| | | | - Mitesh J Borad
- Division of Medical Oncology, Department of Medicine, Mayo Clinic Arizona, Scottsdale, AZ
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18
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Ghose J, Dona A, Murtadha M, Gunes EG, Caserta E, Yoo JY, Russell L, Jaime-Ramirez AC, Barwick BG, Gupta VA, Sanchez JF, Sborov DW, Rosen ST, Krishnan A, Boise LH, Kaur B, Hofmeister CC, Pichiorri F. Oncolytic herpes simplex virus infects myeloma cells in vitro and in vivo. MOLECULAR THERAPY-ONCOLYTICS 2021; 20:519-531. [PMID: 33738338 PMCID: PMC7940704 DOI: 10.1016/j.omto.2021.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 02/15/2021] [Indexed: 12/21/2022]
Abstract
Because most patients with multiple myeloma (MM) develop resistance to current regimens, novel approaches are needed. Genetically modified, replication-competent oncolytic viruses exhibit high tropism for tumor cells regardless of cancer stage and prior treatment. Receptors of oncolytic herpes simplex virus 1 (oHSV-1), NECTIN-1, and HVEM are expressed on MM cells, prompting us to investigate the use of oHSV-1 against MM. Using oHSV-1-expressing GFP, we found a dose-dependent increase in the GFP+ signal in MM cell lines and primary MM cells. Whereas NECTIN-1 expression is variable among MM cells, we discovered that HVEM is ubiquitously and highly expressed on all samples tested. Expression of HVEM was consistently higher on CD138+/CD38+ plasma cells than in non-plasma cells. HVEM blocking demonstrated the requirement of this receptor for infection. However, we observed that, although oHSV-1 could efficiently infect and kill all MM cell lines tested, no viral replication occurred. Instead, we identified that oHSV-1 induced MM cell apoptosis via caspase-3 cleavage. We further noted that oHSV-1 yielded a significant decrease in tumor volume in two mouse xenograft models. Therefore, oHSV-1 warrants exploration as a novel potentially effective treatment option in MM, and HVEM should be investigated as a possible therapeutic target.
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Affiliation(s)
- Jayeeta Ghose
- Department of Radiation Oncology, Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Ada Dona
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Monrovia, CA 91016, USA
| | - Mariam Murtadha
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Monrovia, CA 91016, USA
| | - Emine Gulsen Gunes
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Monrovia, CA 91016, USA
| | - Enrico Caserta
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Monrovia, CA 91016, USA
| | - Ji Young Yoo
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Luke Russell
- Department of Neurological Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | | | - Benjamin G Barwick
- Department of Hematology & Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA 30307, USA
| | - Vikas A Gupta
- Department of Hematology & Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA 30307, USA
| | - James F Sanchez
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Monrovia, CA 91016, USA
| | - Douglas W Sborov
- Division of Hematology & Hematologic Malignancies, Department of Internal Medicine, University of Utah, Huntsman Cancer Institute, Salt Lake City, UT, USA
| | - Steven T Rosen
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Monrovia, CA 91016, USA
| | - Amrita Krishnan
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Monrovia, CA 91016, USA
| | - Lawrence H Boise
- Department of Hematology & Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA 30307, USA
| | - Balveen Kaur
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Craig C Hofmeister
- Department of Hematology & Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA 30307, USA
| | - Flavia Pichiorri
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope, Monrovia, CA 91016, USA
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19
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Qiao H, Chen X, Wang Q, Zhang J, Huang D, Chen E, Qian H, Zhong Y, Tang Q, Chen W. Tumor localization of oncolytic adenovirus assisted by pH-degradable microgels with JQ1-mediated boosting replication and PD-L1 suppression for enhanced cancer therapy. Biomater Sci 2021; 8:2472-2480. [PMID: 32196028 DOI: 10.1039/d0bm00172d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Oncolytic therapy is a fast-developing cancer treatment field based on the promising clinical performance from the selective tumor cell killing and induction of systemic antitumor immunity. The virotherapy efficacy, however, is strongly hindered by the limited virus propagation and negative immune regulation in the tumor microenvironments. To enhance the antitumor activity, we developed injectable pH-degradable PVA microgels encapsulated with oncolytic adenovirus (OA) by microfluidics for localized OA delivery and cancer treatments. PVA microgels were tailored with an OA encapsulation efficiency of 68% and exhibited a pH-dependent OA release as the microgel degradation at mildly acidic conditions. PVA microgels mediated fast viral release and increased replication in HEK293T and A549 cells at a lower pH, and the replication efficiency could be further reinforced by co-loading with one BET bromodomain inhibitor JQ1, inducing significant cytotoxicity against A549 cells. An in vivo study revealed that OA release was highly located at the tumor tissue assisted by PVA microgels, and the OA infection was also enhanced with the addition of JQ1 treatment, meanwhile greatly inhibiting the PD-L1 expression to overcome the immune suppression. OA/JQ1 co-encapsulated injectable microgels exhibited a superior in vivo antitumor activity on the A549 lung tumor-bearing mice by the combination of inhibited proliferation, amplified oncolysis, and potential immune regulation.
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Affiliation(s)
- Haishi Qiao
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Xingmei Chen
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Qiming Wang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, PR China
| | - Junmei Zhang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Dechun Huang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Enping Chen
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Hongliang Qian
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Yinan Zhong
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Qi Tang
- Key Laboratory of Antibody Technology, National Health Commission, Nanjing Medical University, Nanjing 211166, PR China.
| | - Wei Chen
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China.
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20
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Martini V, D'Avanzo F, Maggiora PM, Varughese FM, Sica A, Gennari A. Oncolytic virotherapy: new weapon for breast cancer treatment. Ecancermedicalscience 2020; 14:1149. [PMID: 33574894 PMCID: PMC7864690 DOI: 10.3332/ecancer.2020.1149] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Indexed: 12/12/2022] Open
Abstract
The recent introduction of viruses as a weapon against cancer can be regarded as one of the most intriguing approaches in the context of precision medicine. The role of immune checkpoint inhibitors has been extensively studied in early and advanced cancer stages, with extraordinary results. Although there is a good tolerability profile, especially when compared with conventional chemotherapy, severe immune-related adverse events have emerged as a potential limitation. Moreover, there are still treatment-resistant cases and thus further treatment options need to be implemented. Several in vitro and in vivo studies have been conducted and are ongoing to develop oncolytic viruses (OVs) as a tool to modulate the immune system response. OVs are attenuated viruses that can kill cancer cells after having infected them, producing microenvironment remodelling and antitumour immune response. The potential of oncolytic virotherapy is to contrast the absence of T cell infiltrates, converting ‘cold’ tumours into ‘hot’ ones, thus improving the performance of the immune system. Breast cancer, the second most common cause of cancer-related deaths among women, is considered a ‘cold’ tumour. In this context, oncolytic virotherapy might well be considered as a promising strategy. This review summarises the current status, clinical applications and future development of OVs, focusing on breast cancer treatment.
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Affiliation(s)
- Veronica Martini
- Division of Oncology, Department of Translational Medicine, University of Eastern Piedmont, Novara 13100, Italy.,Center for Translational Research on Autoimmune & Allergic Diseases - CAAD, Novara 28100, Italy.,https://orcid.org/0000-0002-0887-4082
| | - Francesca D'Avanzo
- Division of Oncology, Department of Translational Medicine, University of Eastern Piedmont, Novara 13100, Italy
| | - Paola Maria Maggiora
- Division of Oncology, Department of Translational Medicine, University of Eastern Piedmont, Novara 13100, Italy
| | - Feba Maria Varughese
- Division of Oncology, Department of Translational Medicine, University of Eastern Piedmont, Novara 13100, Italy.,Center for Translational Research on Autoimmune & Allergic Diseases - CAAD, Novara 28100, Italy
| | - Antonio Sica
- Department of Pharmaceutical Sciences, University of Eastern Piedmont, A Avogadro 28100, Italy.,Department of Inflammation and Immunology, Humanitas Clinical and Research Center-IRCCS, Rozzano (MI) 20089, Italy.,https://orcid.org/0000-0002-8342-7442
| | - Alessandra Gennari
- Division of Oncology, Department of Translational Medicine, University of Eastern Piedmont, Novara 13100, Italy.,Center for Translational Research on Autoimmune & Allergic Diseases - CAAD, Novara 28100, Italy.,https://orcid.org/0000-0002-0928-2281
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21
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Müller L, Berkeley R, Barr T, Ilett E, Errington-Mais F. Past, Present and Future of Oncolytic Reovirus. Cancers (Basel) 2020; 12:E3219. [PMID: 33142841 PMCID: PMC7693452 DOI: 10.3390/cancers12113219] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/28/2020] [Accepted: 10/30/2020] [Indexed: 12/12/2022] Open
Abstract
Oncolytic virotherapy (OVT) has received significant attention in recent years, especially since the approval of talimogene Laherparepvec (T-VEC) in 2015 by the Food and Drug administration (FDA). Mechanistic studies of oncolytic viruses (OVs) have revealed that most, if not all, OVs induce direct oncolysis and stimulate innate and adaptive anti-tumour immunity. With the advancement of tumour modelling, allowing characterisation of the effects of tumour microenvironment (TME) components and identification of the cellular mechanisms required for cell death (both direct oncolysis and anti-tumour immune responses), it is clear that a "one size fits all" approach is not applicable to all OVs, or indeed the same OV across different tumour types and disease locations. This article will provide an unbiased review of oncolytic reovirus (clinically formulated as pelareorep), including the molecular and cellular requirements for reovirus oncolysis and anti-tumour immunity, reports of pre-clinical efficacy and its overall clinical trajectory. Moreover, as it is now abundantly clear that the true potential of all OVs, including reovirus, will only be reached upon the development of synergistic combination strategies, reovirus combination therapeutics will be discussed, including the limitations and challenges that remain to harness the full potential of this promising therapeutic agent.
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Multidirectional Strategies for Targeted Delivery of Oncolytic Viruses by Tumor Infiltrating Immune Cells. Pharmacol Res 2020; 161:105094. [PMID: 32795509 DOI: 10.1016/j.phrs.2020.105094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/18/2020] [Accepted: 07/20/2020] [Indexed: 02/07/2023]
Abstract
Oncolytic virus (OV) immunotherapy has demonstrated to be a promising approach in cancer treatment due to tumor-specific oncolysis. However, their clinical use so far has been largely limited due to the lack of suitable delivery strategies with high efficacy. Direct 'intratumoral' injection is the way to cross the hurdles of systemic toxicity, while providing local effects. Progress in this field has enabled the development of alternative way using 'systemic' oncolytic virotherapy for producing better results. One major potential roadblock to systemic OV delivery is the low virus persistence in the face of hostile immune system. The delivery challenge is even greater when attempting to target the oncolytic viruses into the entire tumor mass, where not all tumor cells are equally exposed to exactly the same microenvironment. The microenvironment of many tumors is known to be massively infiltrated with various types of leucocytes in both primary and metastatic sites. Interestingly, this intratumoral immune cell heterogeneity exhibits a degree of organized distribution inside the tumor bed as evidenced, for example, by the hypoxic tumor microenviroment where predominantly recruits tumor-associated macrophages. Although in vivo OV delivery seems complicated and challenging, recent results are encouraging for decreasing the limitations of systemically administered oncolytic viruses and an improved efficiency of oncolytic viral therapy in targeting cancerous tissues in vitro. Here, we review the latest developments of carrier cell-based oncolytic virus delivery using tumor-infiltrating immune cells with a focus on the main features of each cellular vehicle.
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23
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Chiocca EA, Nakashima H, Kasai K, Fernandez SA, Oglesbee M. Preclinical Toxicology of rQNestin34.5v.2: An Oncolytic Herpes Virus with Transcriptional Regulation of the ICP34.5 Neurovirulence Gene. Mol Ther Methods Clin Dev 2020; 17:871-893. [PMID: 32373649 PMCID: PMC7195500 DOI: 10.1016/j.omtm.2020.03.028] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 03/25/2020] [Indexed: 12/24/2022]
Abstract
rQNestin34.5v.2 is an oncolytic herpes simplex virus 1 (oHSV) that retains expression of the neurovirulent ICP34.5 gene under glioma-selective transcriptional regulation. To prepare an investigational new drug (IND) application, we performed toxicology and efficacy studies of rQNestin34.5v.2 in mice in the presence or absence of the immunomodulating drug cyclophosphamide (CPA). ICP34.5 allows HSV1 to survive interferon and improves viral replication by dephosphorylation of the eIF-2α translation factor. rQNestin34.5v.2 dephosphorylated eIF-2α in human glioma cells, but not in human normal cells, resulting in significantly higher cytotoxicity and viral replication in the former compared to the latter. In vivo toxicity of rQNestin34.5v.2 was compared with that of wild-type F strain in immunocompetent BALB/c mice and athymic mice by multiple routes of administration in the presence or absence of CPA. A likely no observed adverse effect level (NOAEL) dose for intracranial rQNestin34.5v.2 was estimated, justifying a phase 1 clinical trial in recurrent glioma patients (ClinicalTrials.gov: NCT03152318), after successful submission of an IND.
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Affiliation(s)
- E. Antonio Chiocca
- Harvey Cushing Neuro-oncology Laboratories, Department of Neurosurgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Hiroshi Nakashima
- Harvey Cushing Neuro-oncology Laboratories, Department of Neurosurgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Kazue Kasai
- Harvey Cushing Neuro-oncology Laboratories, Department of Neurosurgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Soledad A. Fernandez
- Department of Biomedical Informatics, Ohio State University, Columbus, OH 43210, USA
| | - Michael Oglesbee
- Department of Veterinary Biosciences, Ohio State University, Columbus, OH 43210, USA
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24
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Cervera-Carrascon V, Quixabeira DCA, Havunen R, Santos JM, Kutvonen E, Clubb JHA, Siurala M, Heiniö C, Zafar S, Koivula T, Lumen D, Vaha M, Garcia-Horsman A, Airaksinen AJ, Sorsa S, Anttila M, Hukkanen V, Kanerva A, Hemminki A. Comparison of Clinically Relevant Oncolytic Virus Platforms for Enhancing T Cell Therapy of Solid Tumors. MOLECULAR THERAPY-ONCOLYTICS 2020; 17:47-60. [PMID: 32322662 PMCID: PMC7163046 DOI: 10.1016/j.omto.2020.03.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 03/13/2020] [Indexed: 12/19/2022]
Abstract
Despite some promising results, the majority of patients do not benefit from T cell therapies, as tumors prevent T cells from entering the tumor, shut down their activity, or downregulate key antigens. Due to their nature and mechanism of action, oncolytic viruses have features that can help overcome many of the barriers currently facing T cell therapies of solid tumors. This study aims to understand how four different oncolytic viruses (adenovirus, vaccinia virus, herpes simplex virus, and reovirus) perform in that task. For that purpose, an immunocompetent in vivo tumor model featuring adoptive tumor-infiltrating lymphocyte (TIL) therapy was used. Tumor growth control (p < 0.001) and survival analyses suggest that adenovirus was most effective in enabling T cell therapy. The complete response rate was 62% for TILs + adenovirus versus 17.5% for TILs + PBS. Of note, TIL biodistribution did not explain efficacy differences between viruses. Instead, immunostimulatory shifts in the tumor microenvironment mirrored efficacy results. Overall, the use of oncolytic viruses can improve the utility of T cell therapies, and additional virus engineering by arming with transgenes can provide further antitumor effects. This phenomenon was seen when an unarmed oncolytic adenovirus was compared to Ad5/3-E2F-d24-hTNFa-IRES-hIL2 (TILT-123). A clinical trial is ongoing, where patients receiving TIL treatment also receive TILT-123 (ClinicalTrials.gov: NCT04217473).
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Affiliation(s)
- Victor Cervera-Carrascon
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland.,TILT Biotherapeutics, 00290 Helsinki, Finland
| | - Dafne C A Quixabeira
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland
| | - Riikka Havunen
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland.,TILT Biotherapeutics, 00290 Helsinki, Finland
| | - Joao M Santos
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland.,TILT Biotherapeutics, 00290 Helsinki, Finland
| | - Emma Kutvonen
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland
| | - James H A Clubb
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland.,TILT Biotherapeutics, 00290 Helsinki, Finland
| | - Mikko Siurala
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland.,TILT Biotherapeutics, 00290 Helsinki, Finland
| | - Camilla Heiniö
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland
| | - Sadia Zafar
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland
| | - Teija Koivula
- Department of Chemistry, Radiochemistry, University of Helsinki, 00560 Helsinki, Finland
| | - Dave Lumen
- Department of Chemistry, Radiochemistry, University of Helsinki, 00560 Helsinki, Finland
| | - Marjo Vaha
- Regenerative Pharmacology Group, Division of Pharmacology and Pharmacotherapy, University of Helsinki, 00560 Helsinki, Finland
| | - Arturo Garcia-Horsman
- Regenerative Pharmacology Group, Division of Pharmacology and Pharmacotherapy, University of Helsinki, 00560 Helsinki, Finland
| | - Anu J Airaksinen
- Department of Chemistry, Radiochemistry, University of Helsinki, 00560 Helsinki, Finland
| | - Suvi Sorsa
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland.,TILT Biotherapeutics, 00290 Helsinki, Finland
| | | | - Veijo Hukkanen
- Institute of Biomedicine, University of Turku, 20500 Turku, Finland
| | - Anna Kanerva
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland.,Department of Obstetrics and Gynecology, Helsinki University Central Hospital, 00290 Helsinki, Finland
| | - Akseli Hemminki
- Cancer Gene Therapy Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland.,TILT Biotherapeutics, 00290 Helsinki, Finland.,Helsinki University Hospital Comprehensive Cancer Center, 00290 Helsinki, Finland
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25
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Goel S, Ocean AJ, Parakrama RY, Ghalib MH, Chaudhary I, Shah U, Viswanathan S, Kharkwal H, Coffey M, Maitra R. Elucidation of Pelareorep Pharmacodynamics in A Phase I Trial in Patients with KRAS-Mutated Colorectal Cancer. Mol Cancer Ther 2020; 19:1148-1156. [PMID: 32156785 DOI: 10.1158/1535-7163.mct-19-1117] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/04/2020] [Accepted: 03/05/2020] [Indexed: 02/06/2023]
Abstract
KRAS mutation is a negative predictive biomarker of anti-EGFR agents in patients with metastatic colorectal cancer (mCRC), and remains an elusive target. Pelareorep, a double-stranded RNA virus selectively replicates in KRAS-mutated cells, and is synergistic with irinotecan. A dose escalation trial of FOLFIRI/bevacizumab [irinotecan (150-180 mg/m2) and pelareorep (1 × 1010 TCID50-3 × 1010 TCID50)] was implemented in adult patients with oxaliplatin refractory/intolerant, KRAS-mutant mCRC. Pelareorep was administered intravenously over 1 hour on days 1-5 every 4 weeks. Additional studies included pharmacokinetics, tumor morphology, and immune responses. Among FOLFIRI-naïve patients, the highest dose of FOLFIRI/bevacizumab (180 mg/m2 irinotecan) and pelareorep (3 × 1010 TCID50) was well tolerated, without a dose-limiting toxicity. At the recommended phase II dose, 3 of 6 patients (50%) had a partial response; the median progression-free and overall survival (PFS, OS) were 65.6 weeks and 25.1 months, respectively. Toxicities included myelosuppression, fatigue, and diarrhea. Transmission electron microscopy revealed viral factories (viral collections forming vesicular structures), at various stages of development. Immunogold staining against viral capsid σ-1 protein demonstrated viral "homing" in the tumor cells. The nucleus displayed sufficient euchromatin regions suggestive of active transcription. Flow cytometry revealed rapid dendritic cell maturation (48 hours) with subsequent activation of cytotoxic T cells (7 days). The combination of pelareorep with FOLFIRI/bevacizumab is safe. The PFS and OS data are encouraging and deserve further exploration. Pelareorep leads to a clear recurrent immune stimulatory response with cytotoxic T-cell activation, and homes and replicates in the tumor.
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Affiliation(s)
- Sanjay Goel
- Department of Medical Oncology, Montefiore Medical Center, Bronx, New York. .,Albert Einstein College of Medicine, Bronx, New York
| | - Allyson J Ocean
- Department of Medical Oncology, New York-Presbyterian/Weill Cornell Medical Center, New York, New York
| | - Ruwan Y Parakrama
- Department of Medical Oncology, Montefiore Medical Center, Bronx, New York
| | - Mohammad H Ghalib
- Department of Medical Oncology, Montefiore Medical Center, Bronx, New York
| | - Imran Chaudhary
- Department of Medical Oncology, Montefiore Medical Center, Bronx, New York
| | - Umang Shah
- Department of Medical Oncology, Montefiore Medical Center, Bronx, New York
| | | | - Himanshu Kharkwal
- Department of Medical Oncology, Montefiore Medical Center, Bronx, New York
| | | | - Radhashree Maitra
- Department of Medical Oncology, Montefiore Medical Center, Bronx, New York.,Albert Einstein College of Medicine, Bronx, New York
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26
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Jayawardena N, Poirier JT, Burga LN, Bostina M. Virus-Receptor Interactions and Virus Neutralization: Insights for Oncolytic Virus Development. Oncolytic Virother 2020; 9:1-15. [PMID: 32185149 PMCID: PMC7064293 DOI: 10.2147/ov.s186337] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 02/09/2020] [Indexed: 12/24/2022] Open
Abstract
Oncolytic viruses (OVs) are replication competent agents that selectively target cancer cells. After penetrating the tumor cell, viruses replicate and eventually trigger cell lysis, releasing the new viral progeny, which at their turn will attack and kill neighbouring cells. The ability of OVs to self-amplify within the tumor while sparing normal cells can provide several advantages including the capacity to encode and locally produce therapeutic protein payloads, and to prime the host immune system. OVs targeting of cancer cells is mediated by host factors that are differentially expressed between normal tissue and tumors, including viral receptors and internalization factors. In this review article, we will discuss the evolution of oncolytic viruses that have reached the stage of clinical trials, their mechanisms of oncolysis, cellular receptors, strategies for targeting cancers, viral neutralization and developments to bypass virus neutralization.
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Affiliation(s)
- Nadishka Jayawardena
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - John T Poirier
- Department of Medicine and Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Laura N Burga
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Mihnea Bostina
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
- Otago Micro and Nano Imaging, University of Otago, Dunedin, New Zealand
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27
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Breast Tumor-Associated Metalloproteases Restrict Reovirus Oncolysis by Cleaving the σ1 Cell Attachment Protein and Can Be Overcome by Mutation of σ1. J Virol 2019; 93:JVI.01380-19. [PMID: 31462562 DOI: 10.1128/jvi.01380-19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 08/20/2019] [Indexed: 01/01/2023] Open
Abstract
Reovirus is undergoing clinical testing as an oncolytic therapy for breast cancer. Given that reovirus naturally evolved to thrive in enteric environments, we sought to better understand how breast tumor microenvironments impinge on reovirus infection. Reovirus was treated with extracellular extracts generated from polyomavirus middle T-antigen-derived mouse breast tumors. Unexpectedly, these breast tumor extracellular extracts inactivated reovirus, reducing infectivity of reovirus particles by 100-fold. Mechanistically, inactivation was attributed to proteolytic cleavage of the viral cell attachment protein σ1, which diminished virus binding to sialic acid (SA)-low tumor cells. Among various specific protease class inhibitors and metal ions, EDTA and ZnCl2 effectively modulated σ1 cleavage, indicating that breast tumor-associated zinc-dependent metalloproteases are responsible for reovirus inactivation. Moreover, media from MCF7, MB468, MD-MB-231, and HS578T breast cancer cell lines recapitulated σ1 cleavage and reovirus inactivation, suggesting that inactivation of reovirus is shared among mouse and human breast cancers and that breast cancer cells by themselves can be a source of reovirus-inactivating proteases. Binding assays and quantification of SA levels on a panel of cancer cells showed that truncated σ1 reduced virus binding to cells with low surface SA. To overcome this restriction, we generated a reovirus mutant with a mutation (T249I) in σ1 that prevents σ1 cleavage and inactivation by breast tumor-associated proteases. The mutant reovirus showed similar replication kinetics in tumorigenic cells, toxicity equivalent to that of wild-type reovirus in a severely compromised mouse model, and increased tumor titers. Overall, the data show that tumor microenvironments have the potential to reduce infectivity of reovirus.IMPORTANCE We demonstrate that metalloproteases in breast tumor microenvironments can inactivate reovirus. Our findings expose that tumor microenvironment proteases could have a negative impact on proteinaceous cancer therapies, such as reovirus, and that modification of such therapies to circumvent inactivation by tumor metalloproteases merits consideration.
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28
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Martinez-Quintanilla J, Seah I, Chua M, Shah K. Oncolytic viruses: overcoming translational challenges. J Clin Invest 2019; 129:1407-1418. [PMID: 30829653 DOI: 10.1172/jci122287] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Oncolytic virotherapy (OVT) is a promising approach in which WT or engineered viruses selectively replicate and destroy tumor cells while sparing normal ones. In the last two decades, different oncolytic viruses (OVs) have been modified and tested in a number of preclinical studies, some of which have led to clinical trials in cancer patients. These clinical trials have revealed several critical limitations with regard to viral delivery, spread, resistance, and antiviral immunity. Here, we focus on promising research strategies that have been developed to overcome the aforementioned obstacles. Such strategies include engineering OVs to target a broad spectrum of tumor cells while evading the immune system, developing unique delivery mechanisms, combining other immunotherapeutic agents with OVT, and using clinically translatable mouse tumor models to potentially translate OVT more readily into clinical settings.
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Affiliation(s)
| | - Ivan Seah
- Center for Stem Cell Therapeutics and Imaging and
| | - Melissa Chua
- Center for Stem Cell Therapeutics and Imaging and.,Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Khalid Shah
- Center for Stem Cell Therapeutics and Imaging and.,Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.,Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts, USA
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29
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Berkeley RA, Steele LP, Mulder AA, van den Wollenberg DJM, Kottke TJ, Thompson J, Coffey M, Hoeben RC, Vile RG, Melcher A, Ilett EJ. Antibody-Neutralized Reovirus Is Effective in Oncolytic Virotherapy. Cancer Immunol Res 2018; 6:1161-1173. [PMID: 30209061 DOI: 10.1158/2326-6066.cir-18-0309] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 08/14/2018] [Accepted: 08/16/2018] [Indexed: 11/16/2022]
Abstract
Immunotherapy is showing promise for otherwise incurable cancers. Oncolytic viruses (OVs), developed as direct cytotoxic agents, mediate their antitumor effects via activation of the immune system. However, OVs also stimulate antiviral immune responses, including the induction of OV-neutralizing antibodies. Current dogma suggests that the presence of preexisting antiviral neutralizing antibodies in patients, or their development during viral therapy, is a barrier to systemic OV delivery, rendering repeat systemic treatments ineffective. However, we have found that human monocytes loaded with preformed reovirus-antibody complexes, in which the reovirus is fully neutralized, deliver functional replicative reovirus to tumor cells, resulting in tumor cell infection and lysis. This delivery mechanism is mediated, at least in part, by antibody receptors (in particular FcγRIII) that mediate uptake and internalization of the reovirus/antibody complexes by the monocytes. This finding has implications for oncolytic virotherapy and for the design of clinical OV treatment strategies. Cancer Immunol Res; 6(10); 1161-73. ©2018 AACR.
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Affiliation(s)
- Robert A Berkeley
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, United Kingdom
| | - Lynette P Steele
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, United Kingdom
| | - Aat A Mulder
- Leiden University Medical Centre, Department of Molecular Cell Biology, Leiden, the Netherlands
| | | | | | - Jill Thompson
- Department of Immunology, Mayo Clinic, Rochester, Minnesota
| | - Matthew Coffey
- Oncolytics Biotech Incorporated, Calgary, Alberta, Canada
| | - Rob C Hoeben
- Leiden University Medical Centre, Department of Molecular Cell Biology, Leiden, the Netherlands
| | - Richard G Vile
- Department of Immunology, Mayo Clinic, Rochester, Minnesota
| | - Alan Melcher
- Institute of Cancer Research, London, United Kingdom
| | - Elizabeth J Ilett
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, United Kingdom.
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30
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Mostafa AA, Meyers DE, Thirukkumaran CM, Liu PJ, Gratton K, Spurrell J, Shi Q, Thakur S, Morris DG. Oncolytic Reovirus and Immune Checkpoint Inhibition as a Novel Immunotherapeutic Strategy for Breast Cancer. Cancers (Basel) 2018; 10:cancers10060205. [PMID: 29914097 PMCID: PMC6025420 DOI: 10.3390/cancers10060205] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/08/2018] [Accepted: 06/08/2018] [Indexed: 02/07/2023] Open
Abstract
As the current efficacy of oncolytic viruses (OVs) as monotherapy is limited, exploration of OVs as part of a broader immunotherapeutic treatment strategy for cancer is necessary. Here, we investigated the ability for immune checkpoint blockade to enhance the efficacy of oncolytic reovirus (RV) for the treatment of breast cancer (BrCa). In vitro, oncolysis and cytokine production were assessed in human and murine BrCa cell lines following RV exposure. Furthermore, RV-induced upregulation of tumor cell PD-L1 was evaluated. In vivo, the immunocompetent, syngeneic EMT6 murine model of BrCa was employed to determine therapeutic and tumor-specific immune responses following treatment with RV, anti-PD-1 antibodies or in combination. RV-mediated oncolysis and cytokine production were observed following BrCa cell infection and RV upregulated tumor cell expression of PD-L1. In vivo, RV monotherapy significantly reduced disease burden and enhanced survival in treated mice, and was further enhanced by PD-1 blockade. RV therapy increased the number of intratumoral regulatory T cells, which was reversed by the addition of PD-1 blockade. Finally, dual treatment led to the generation of a systemic adaptive anti-tumor immune response evidenced by an increase in tumor-specific IFN-γ producing CD8+ T cells, and immunity from tumor re-challenge. The combination of PD-1 blockade and RV appears to be an efficacious immunotherapeutic strategy for the treatment of BrCa, and warrants further investigation in early-phase clinical trials.
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Affiliation(s)
- Ahmed A Mostafa
- Department of Pathology and Laboratory Medicine, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada.
- Histocompatibility and Immunogenetics, Calgary Lab Services, 3535 Research Road NW, Calgary, AB T2L 2K8, Canada.
| | - Daniel E Meyers
- Department of Oncology, University of Calgary, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
- Tom Baker Cancer Centre, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
| | - Chandini M Thirukkumaran
- Department of Oncology, University of Calgary, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
- Tom Baker Cancer Centre, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
| | - Peter J Liu
- Faculty of Medicine, University of Toronto, King's College Circle, Toronto, ON M5S 1A8, Canada.
| | - Kathy Gratton
- Department of Oncology, University of Calgary, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
| | - Jason Spurrell
- Department of Oncology, University of Calgary, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
- Tom Baker Cancer Centre, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
| | - Qiao Shi
- Tom Baker Cancer Centre, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
| | - Satbir Thakur
- Department of Oncology, University of Calgary, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
- Tom Baker Cancer Centre, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
| | - Don G Morris
- Department of Oncology, University of Calgary, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
- Tom Baker Cancer Centre, 1331 29 Street NW, Calgary, AB T2N 4N2, Canada.
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31
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Oncolytic Viruses for Multiple Myeloma Therapy. Cancers (Basel) 2018; 10:cancers10060198. [PMID: 29903988 PMCID: PMC6025383 DOI: 10.3390/cancers10060198] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 05/31/2018] [Accepted: 06/12/2018] [Indexed: 12/17/2022] Open
Abstract
Although recent treatment advances have improved outcomes for patients with multiple myeloma (MM), the disease frequently becomes refractory to current therapies. MM thus remains incurable for most patients and new therapies are urgently needed. Oncolytic viruses are a promising new class of therapeutics that provide tumor-targeted therapy by specifically infecting and replicating within cancerous cells. Oncolytic therapy yields results from both direct killing of malignant cells and induction of an anti-tumor immune response. In this review, we will describe oncolytic viruses that are being tested for MM therapy with a focus on those agents that have advanced into clinical trials.
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32
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Phillips MB, Stuart JD, Rodríguez Stewart RM, Berry JT, Mainou BA, Boehme KW. Current understanding of reovirus oncolysis mechanisms. Oncolytic Virother 2018; 7:53-63. [PMID: 29942799 PMCID: PMC6005300 DOI: 10.2147/ov.s143808] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Mammalian orthoreovirus (reovirus) is under development as a cancer virotherapy. Clinical trials demonstrate that reovirus-based therapies are safe and tolerated in patients with a wide variety of cancers. Although reovirus monotherapy has proven largely ineffective, reovirus sensitizes cancer cells to existing chemotherapeutic agents and radiation. Clinical trials are underway to test the efficacy of reovirus in combination with chemotherapeutic and radiation regimens and to evaluate the effectiveness of reovirus in conjunction with immunotherapies. Central to the use of reovirus to treat cancer is its capacity to directly kill cancer cells and alter the cellular environment to augment other therapies. Apoptotic cell death is a prominent mechanism of reovirus cancer cell killing. However, reoviruses can also kill cancer cells through nonapoptotic mechanisms. Here, we describe mechanisms of reovirus cancer cell killing, highlight how reovirus is used in combination with existing cancer treatments, and discuss what is known as to how reovirus modulates cancer immunotherapy.
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Affiliation(s)
- Matthew B Phillips
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Atlanta, GA, USA
| | - Johnasha D Stuart
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Atlanta, GA, USA
| | | | | | | | - Karl W Boehme
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Atlanta, GA, USA
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33
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Comins C, Simpson GR, Rogers W, Relph K, Harrington K, Melcher A, Roulstone V, Kyula J, Pandha H. Synergistic antitumour effects of rapamycin and oncolytic reovirus. Cancer Gene Ther 2018; 25:148-160. [PMID: 29720674 DOI: 10.1038/s41417-018-0011-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 08/30/2017] [Accepted: 08/31/2017] [Indexed: 12/24/2022]
Abstract
There are currently numerous oncolytic viruses undergoing clinical trial evaluation in cancer patients and one agent, Talimogene laherparepvec, has been approved for the treatment of malignant melanoma. This progress highlights the huge clinical potential of this treatment modality, and the focus is now combining these agents with conventional anticancer treatments or agents that enhance viral replication, and thereby oncolysis, in the tumour microenvironment. We evaluated the combination of reovirus with rapamycin in B16F10 cell, a murine model of malignant melanoma, based on potential mechanisms by which mTOR inhibitors might enhance viral oncolysis. Rapamycin was not immunomodulatory in that it had no effect on the generation of an antireovirus-neutralising antibody response in C57/black 6 mice. The cell cycle effects of reovirus (increase G0/G1 fraction) were unaffected by concomitant or sequential exposure of rapamycin. However, rapamycin attenuated viral replication if given prior or concomitantly with reovirus and similarly reduced reovirus-induced apoptotic cell death Annexin V/PI and caspase 3/7 activation studies. We found clear evidence of synergistic antitumour effects of the combination both in vitro and in vivo, which was sequence dependent only in the in vitro setting. In conclusion, we have demonstrated synergistic antitumour efficacy of reovirus and rapamycin combination.
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Affiliation(s)
- Charles Comins
- Oncology, Faculty of Health and Medical Sciences, University of Surrey, Leggett Building, Guildford, Surrey, GU2 7WG, UK
| | - Guy Richard Simpson
- Oncology, Faculty of Health and Medical Sciences, University of Surrey, Leggett Building, Guildford, Surrey, GU2 7WG, UK
| | - William Rogers
- Oncology, Faculty of Health and Medical Sciences, University of Surrey, Leggett Building, Guildford, Surrey, GU2 7WG, UK
| | - Kate Relph
- Oncology, Faculty of Health and Medical Sciences, University of Surrey, Leggett Building, Guildford, Surrey, GU2 7WG, UK
| | - Kevin Harrington
- Institute of Cancer Research, 123 Old Brompton Road, London, SW7 3RP, UK
| | - Alan Melcher
- Institute of Cancer Research, 123 Old Brompton Road, London, SW7 3RP, UK
| | - Victoria Roulstone
- Institute of Cancer Research, 123 Old Brompton Road, London, SW7 3RP, UK
| | - Joan Kyula
- Institute of Cancer Research, 123 Old Brompton Road, London, SW7 3RP, UK
| | - Hardev Pandha
- Oncology, Faculty of Health and Medical Sciences, University of Surrey, Leggett Building, Guildford, Surrey, GU2 7WG, UK.
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34
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Ricca JM, Oseledchyk A, Walther T, Liu C, Mangarin L, Merghoub T, Wolchok JD, Zamarin D. Pre-existing Immunity to Oncolytic Virus Potentiates Its Immunotherapeutic Efficacy. Mol Ther 2018; 26:1008-1019. [PMID: 29478729 PMCID: PMC6079372 DOI: 10.1016/j.ymthe.2018.01.019] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 01/18/2018] [Accepted: 01/25/2018] [Indexed: 12/28/2022] Open
Abstract
Anti-viral immunity presents a major hurdle for systemically administered oncolytic viruses (OV). Intratumoral OV therapy has a potential to overcome this problem through activation of anti-tumor immune response, with local and abscopal effects. However, the effects of anti-viral immunity in such a setting are still not well defined. Using Newcastle Disease Virus (NDV) as a model, we explore the effects of pre-existing anti-viral immunity on therapeutic efficacy in syngeneic mouse tumor models. Unexpectedly, we find that while pre-existing immunity to NDV limits its replication in tumors, tumor clearance, abscopal anti-tumor immune effects, and survival are not compromised and, on the contrary, are superior in NDV-immunized mice. These findings demonstrate that pre-existing immunity to NDV may increase its therapeutic efficacy through potentiation of systemic anti-tumor immunity, which provides clinical rationale for repeated therapeutic dosing and prompts investigation of such effects with other OVs.
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Affiliation(s)
- Jacob M Ricca
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Swim Across America-Ludwig Collaborative Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Anton Oseledchyk
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Tyler Walther
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Swim Across America-Ludwig Collaborative Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Cailian Liu
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Swim Across America-Ludwig Collaborative Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Levi Mangarin
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Swim Across America-Ludwig Collaborative Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Parker Institute for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Taha Merghoub
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Swim Across America-Ludwig Collaborative Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Parker Institute for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Jedd D Wolchok
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Swim Across America-Ludwig Collaborative Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Parker Institute for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Weill Cornell Medical College, New York, NY 10065, USA
| | - Dmitriy Zamarin
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Swim Across America-Ludwig Collaborative Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Parker Institute for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Weill Cornell Medical College, New York, NY 10065, USA.
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35
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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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36
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NKp46 Recognizes the Sigma1 Protein of Reovirus: Implications for Reovirus-Based Cancer Therapy. J Virol 2017; 91:JVI.01045-17. [PMID: 28724773 DOI: 10.1128/jvi.01045-17] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 07/12/2017] [Indexed: 12/22/2022] Open
Abstract
The recent approval of oncolytic virus for therapy of melanoma patients has increased the need for precise evaluation of the mechanisms by which oncolytic viruses affect tumor growth. Here we show that the human NK cell-activating receptor NKp46 and the orthologous mouse protein NCR1 recognize the reovirus sigma1 protein in a sialic-acid-dependent manner. We identify sites of NKp46/NCR1 binding to sigma1 and show that sigma1 binding by NKp46/NCR1 leads to NK cell activation in vitro Finally, we demonstrate that NCR1 activation is essential for reovirus-based therapy in vivo Collectively, we have identified sigma1 as a novel ligand for NKp46/NCR1 and demonstrated that NKp46/NCR1 is needed both for clearance of reovirus infection and for reovirus-based tumor therapy.IMPORTANCE Reovirus infects much of the population during childhood, causing mild disease, and hence is considered to be efficiently controlled by the immune system. Reovirus also specifically infects tumor cells, leading to tumor death, and is currently being tested in human clinical trials for cancer therapy. The mechanisms by which our immune system controls reovirus infection and tumor killing are not well understood. We report here that natural killer (NK) cells recognize a viral protein named sigma1 through the NK cell-activating receptor NKp46. Using several mouse tumor models, we demonstrate the importance of NK cells in protection from reovirus infection and in reovirus killing of tumors in vivo Collectively, we identify a new ligand for the NKp46 receptor and provide evidence for the importance of NKp46 in the control of reovirus infections and in reovirus-based cancer therapy.
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37
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Oliva S, Gambella M, Boccadoro M, Bringhen S. Systemic virotherapy for multiple myeloma. Expert Opin Biol Ther 2017; 17:1375-1387. [PMID: 28796556 DOI: 10.1080/14712598.2017.1364359] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION The multiple myeloma (MM) treatment scenario has changed considerably over the past few years. Several novel targeted therapies are currently under consideration including oncolytic virotherapy. Areas covered: This review provides an analysis of the mechanisms of action of virotherapy, and summarizes the preclinical and clinical studies of systemic virotherapy developed for the treatment of MM. Different types of viruses have been identified, including: adenovirus, vaccinia virus, herpes simplex virus 1, myxoma virus, reovirus, measles virus, vesicular stomatitis virus and coxsackievirus A21. Expert opinion: The above-mentioned viruses can do more than simply infect and kill malignant plasma cells alone or in combination with chemo and/or radiotherapy. In fact, some of them can also be used to purge myeloma cells from an autologous bone marrow (BM) transplant. Further investigations are required to better explore the best therapeutic combinations for MM and to also overcome antiviral response immunity that can limit the efficacy of this therapeutic strategy.
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Affiliation(s)
- Stefania Oliva
- a Myeloma Unit, Division of Hematology , University of Torino, Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino , Torino , Italy
| | - Manuela Gambella
- a Myeloma Unit, Division of Hematology , University of Torino, Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino , Torino , Italy
| | - Mario Boccadoro
- a Myeloma Unit, Division of Hematology , University of Torino, Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino , Torino , Italy
| | - Sara Bringhen
- a Myeloma Unit, Division of Hematology , University of Torino, Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino , Torino , Italy
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38
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Durham NM, Mulgrew K, McGlinchey K, Monks NR, Ji H, Herbst R, Suzich J, Hammond SA, Kelly EJ. Oncolytic VSV Primes Differential Responses to Immuno-oncology Therapy. Mol Ther 2017; 25:1917-1932. [PMID: 28578991 PMCID: PMC5542805 DOI: 10.1016/j.ymthe.2017.05.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/05/2017] [Accepted: 05/07/2017] [Indexed: 12/31/2022] Open
Abstract
Vesicular stomatitis virus encoding the IFNβ transgene (VSV-IFNβ) is a mediator of potent oncolytic activity and is undergoing clinical evaluation for the treatment of solid tumors. Emerging preclinical and clinical data suggest treatment of tumors with oncolytic viruses may sensitize tumors to checkpoint inhibitors and increase the anti-tumor immune response. New generations of immuno-oncology molecules including T cell agonists are entering clinical development and could be hypothesized to enhance the activity of oncolytic viruses, including VSV-IFNβ. Here, we show that VSV-IFNβ exhibits multiple mechanisms of action, including direct cell killing, stimulation of an innate immune response, recruitment of CD8 T cells, and depletion of T regulatory cells. Moreover, VSV-IFNβ promotes the establishment of a CD8 T cell response to endogenous tumor antigens. Our data demonstrate a significant enhancement of anti-tumor function for VSV-IFNβ when combined with checkpoint inhibitors, but not OX40 agonists. While the addition of checkpoint inhibitors to VSV-IFNβ generated robust tumor growth inhibition, it resulted in no increase in viral replication, transgene expression, or immunophenotypic changes beyond treatment with VSV-IFNβ alone. We hypothesize that tumor-specific T cells generated by VSV-IFNβ retain activity due to a lack of immune exhaustion when checkpoint inhibitors were used.
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Affiliation(s)
| | - Kathy Mulgrew
- MedImmune, LLC, One Medimmune Way, Gaithersburg, MD 20878, USA
| | | | - Noel R Monks
- MedImmune, LLC, One Medimmune Way, Gaithersburg, MD 20878, USA
| | - Hong Ji
- MedImmune, LLC, One Medimmune Way, Gaithersburg, MD 20878, USA
| | - Ronald Herbst
- MedImmune, LLC, One Medimmune Way, Gaithersburg, MD 20878, USA
| | - JoAnn Suzich
- MedImmune, LLC, One Medimmune Way, Gaithersburg, MD 20878, USA
| | - Scott A Hammond
- MedImmune, LLC, One Medimmune Way, Gaithersburg, MD 20878, USA
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Meyers DE, Wang AA, Thirukkumaran CM, Morris DG. Current Immunotherapeutic Strategies to Enhance Oncolytic Virotherapy. Front Oncol 2017. [PMID: 28634571 PMCID: PMC5459877 DOI: 10.3389/fonc.2017.00114] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Oncolytic viruses (OV) represent a promising strategy to augment the spectrum of cancer therapeutics. For efficacy, they rely on two general mechanisms: tumor-specific infection/cell-killing, followed by subsequent activation of the host’s adaptive immune response. Numerous OV genera have been utilized in clinical trials, ultimately culminating in the 2015 Food and Drug Administration approval of a genetically engineered herpes virus, Talminogene laherparepvec (T-VEC). It is generally accepted that OV as monotherapy have only modest clinical efficacy. However, due to their ability to elicit specific antitumor immune responses, they are prime candidates to be paired with other immune-modulating strategies in order to optimize therapeutic efficacy. Synergistic strategies to enhance the efficacy of OV include augmenting the host antitumor response through the insertion of therapeutic transgenes such as GM-CSF, utilization of the prime-boost strategy, and combining OV with immune-modulatory drugs such as cyclophosphamide, sunitinib, and immune checkpoint inhibitors. This review provides an overview of these immune-based strategies to improve the clinical efficacy of oncolytic virotherapy.
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Affiliation(s)
- Daniel E Meyers
- Department of Oncology, University of Calgary, Calgary, AB, Canada.,Tom Baker Cancer Centre, Calgary, AB, Canada
| | | | - Chandini M Thirukkumaran
- Department of Oncology, University of Calgary, Calgary, AB, Canada.,Tom Baker Cancer Centre, Calgary, AB, Canada
| | - Don G Morris
- Department of Oncology, University of Calgary, Calgary, AB, Canada.,Tom Baker Cancer Centre, Calgary, AB, Canada
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40
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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] [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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41
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Russell SJ, Peng KW. Oncolytic Virotherapy: A Contest between Apples and Oranges. Mol Ther 2017; 25:1107-1116. [PMID: 28392162 DOI: 10.1016/j.ymthe.2017.03.026] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 03/16/2017] [Accepted: 03/17/2017] [Indexed: 02/06/2023] Open
Abstract
Viruses can be engineered or adapted for selective propagation in neoplastic tissues and further modified for therapeutic transgene expression to enhance their antitumor potency and druggability. Oncolytic viruses (OVs) can be administered locally or intravenously and spread to a variable degree at sites of tumor growth. OV-infected tumor cells die in situ, releasing viral and tumor antigens that are phagocytosed by macrophages, transported to regional lymph nodes, and presented to antigen-reactive T cells, which proliferate before dispersing to kill uninfected tumor cells at distant sites. Several OVs are showing clinical promise, and one of them, talimogene laherparepvec (T-VEC), was recently granted marketing approval for intratumoral therapy of nonresectable metastatic melanoma. T-VEC also appears to substantially enhance clinical responsiveness to checkpoint inhibitor antibody therapy. Here, we examine the T-VEC paradigm and review some of the approaches currently being pursued to develop the next generation of OVs for both local and systemic administration, as well as for use in combination with other immunomodulatory agents.
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Affiliation(s)
- Stephen J Russell
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA.
| | - Kah-Whye Peng
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
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42
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Zhang T, Suryawanshi YR, Woyczesczyk HM, Essani K. Targeting Melanoma with Cancer-Killing Viruses. Open Virol J 2017; 11:28-47. [PMID: 28567163 PMCID: PMC5420172 DOI: 10.2174/1874357901711010028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 01/05/2017] [Accepted: 01/17/2017] [Indexed: 12/20/2022] Open
Abstract
Melanoma is the deadliest skin cancer with ever-increasing incidence. Despite the development in diagnostics and therapies, metastatic melanoma is still associated with significant morbidity and mortality. Oncolytic viruses (OVs) represent a class of novel therapeutic agents for cancer by possessing two closely related properties for tumor reduction: virus-induced lysis of tumor cells and induction of host anti-tumor immune responses. A variety of viruses, either in "natural" or in genetically modified forms, have exhibited a remarkable therapeutic efficacy in regressing melanoma in experimental and/or clinical studies. This review provides a comprehensive summary of the molecular and cellular mechanisms of action of these viruses, which involve manipulating and targeting the abnormalities of melanoma, and can be categorized as enhancing viral tropism, targeting the tumor microenvironment and increasing the innate and adaptive antitumor responses. Additionally, this review describes the "biomarkers" and deregulated pathways of melanoma that are responsible for melanoma initiation, progression and metastasis. Advances in understanding these abnormalities of melanoma have resulted in effective targeted and immuno-therapies, and could potentially be applied for engineering OVs with enhanced oncolytic activity in future.
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Affiliation(s)
- Tiantian Zhang
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, U.S.A
| | - Yogesh R. Suryawanshi
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, U.S.A
| | - Helene M. Woyczesczyk
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, U.S.A
| | - Karim Essani
- Laboratory of Virology, Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, 49008, U.S.A
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43
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Translational reprogramming in tumour cells can generate oncoselectivity in viral therapies. Nat Commun 2017; 8:14833. [PMID: 28300077 PMCID: PMC5357308 DOI: 10.1038/ncomms14833] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 02/02/2017] [Indexed: 01/06/2023] Open
Abstract
Systemic treatment of cancer requires tumour-selective therapies that eliminate cancer cells yet preserve healthy tissues from undesired damage. Tumoral transformation is associated with profound effects in translational reprogramming of gene expression, such that tumour-specific translational regulation presents an attractive possibility for generating oncoselective therapies. We recently discovered that mRNA translational control by cytoplasmic polyadenylation element-binding proteins (CPEBs) is reactivated in cancer. Here we present a novel approach to restrict genetic-engineered therapies to malignant tissues based on CPEB translational regulation of target mRNAs. We demonstrate that tumour reprogramming of CPEB-mediated mRNA stability and translational regulation modulates tumour-specific expression of viral proteins. For oncolytic adenoviruses, insertion of CPE regulatory sequences in the 3'-untranslated region of the E1A gene provides oncoselectivity, with full potency in cancer cells but attenuated in normal tissues. Our results demonstrate the potential of this strategy to improve oncolytic virus design and provide a framework for exploiting CPE-regulated transgenes for therapy.
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44
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Mahalingam D, Fountzilas C, Moseley J, Noronha N, Tran H, Chakrabarty R, Selvaggi G, Coffey M, Thompson B, Sarantopoulos J. A phase II study of REOLYSIN® (pelareorep) in combination with carboplatin and paclitaxel for patients with advanced malignant melanoma. Cancer Chemother Pharmacol 2017; 79:697-703. [DOI: 10.1007/s00280-017-3260-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 02/08/2017] [Indexed: 01/31/2023]
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45
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Ilett E, Kottke T, Thompson J, Rajani K, Zaidi S, Evgin L, Coffey M, Ralph C, Diaz R, Pandha H, Harrington K, Selby P, Bram R, Melcher A, Vile R. Prime-boost using separate oncolytic viruses in combination with checkpoint blockade improves anti-tumour therapy. Gene Ther 2017; 24:21-30. [PMID: 27779616 PMCID: PMC5387692 DOI: 10.1038/gt.2016.70] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/29/2016] [Accepted: 10/04/2016] [Indexed: 02/06/2023]
Abstract
The anti-tumour effects associated with oncolytic virus therapy are mediated significantly through immune-mediated mechanisms, which depend both on the type of virus and the route of delivery. Here, we show that intra-tumoral oncolysis by Reovirus induced the priming of a CD8+, Th1-type anti-tumour response. By contrast, systemically delivered Vesicular Stomatitis Virus expressing a cDNA library of melanoma antigens (VSV-ASMEL) promoted a potent anti-tumour CD4+ Th17 response. Therefore, we hypothesised that combining the Reovirus-induced CD8+ T cell response, with the VSV-ASMEL CD4+ Th17 helper response, would produce enhanced anti-tumour activity. Consistent with this, priming with intra-tumoral Reovirus, followed by an intra-venous VSV-ASMEL Th17 boost, significantly improved survival of mice bearing established subcutaneous B16 melanoma tumours. We also show that combination of either therapy alone with anti-PD-1 immune checkpoint blockade augmented both the Th1 response induced by systemically delivered Reovirus in combination with GM-CSF, and also the Th17 response induced by VSV-ASMEL. Significantly, anti-PD-1 also uncovered an anti-tumour Th1 response following VSV-ASMEL treatment that was not seen in the absence of checkpoint blockade. Finally, the combination of all three treatments (priming with systemically delivered Reovirus, followed by double boosting with systemic VSV-ASMEL and anti-PD-1) significantly enhanced survival, with long-term cures, compared to any individual, or double, combination therapies, associated with strong Th1 and Th17 responses to tumour antigens. Our data show that it is possible to generate fully systemic, highly effective anti-tumour immunovirotherapy by combining oncolytic viruses, along with immune checkpoint blockade, to induce complementary mechanisms of anti-tumour immune responses.
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Affiliation(s)
- E Ilett
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA
- Leeds Institute of Cancer and Pathology, St James' University Hospital, Leeds, UK
| | - T Kottke
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA
| | - J Thompson
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA
| | - K Rajani
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA
| | - S Zaidi
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA
- The Institute of Cancer Research, London, UK
| | - L Evgin
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA
| | - M Coffey
- Oncolytics Biotech Incorporated, Calgary, Canada
| | - C Ralph
- Leeds Institute of Cancer and Pathology, St James' University Hospital, Leeds, UK
| | | | - H Pandha
- University of Surrey, Guildford, UK
| | | | - P Selby
- Leeds Institute of Cancer and Pathology, St James' University Hospital, Leeds, UK
| | - R Bram
- Department of Immunology, Mayo Clinic, Rochester, MN, USA
| | - A Melcher
- Leeds Institute of Cancer and Pathology, St James' University Hospital, Leeds, UK
| | - R Vile
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA
- Leeds Institute of Cancer and Pathology, St James' University Hospital, Leeds, UK
- Department of Immunology, Mayo Clinic, Rochester, MN, USA
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46
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Bolyard C, Meisen WH, Banasavadi-Siddegowda Y, Hardcastle J, Yoo JY, Wohleb ES, Wojton J, Yu JG, Dubin S, Khosla M, Xu B, Smith J, Alvarez-Breckenridge C, Pow-Anpongkul P, Pichiorri F, Zhang J, Old M, Zhu D, Van Meir EG, Godbout JP, Caligiuri MA, Yu J, Kaur B. BAI1 Orchestrates Macrophage Inflammatory Response to HSV Infection-Implications for Oncolytic Viral Therapy. Clin Cancer Res 2016; 23:1809-1819. [PMID: 27852701 DOI: 10.1158/1078-0432.ccr-16-1818] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 10/04/2016] [Accepted: 10/27/2016] [Indexed: 01/10/2023]
Abstract
Purpose: Brain angiogenesis inhibitor (BAI1) facilitates phagocytosis and bacterial pathogen clearance by macrophages; however, its role in viral infections is unknown. Here, we examined the role of BAI1, and its N-terminal cleavage fragment (Vstat120) in antiviral macrophage responses to oncolytic herpes simplex virus (oHSV).Experimental Design: Changes in infiltration and activation of monocytic and microglial cells after treatment of glioma-bearing mice brains with a control (rHSVQ1) or Vstat120-expressing (RAMBO) oHSV was analyzed using flow cytometry. Co-culture of infected glioma cells with macrophages or microglia was used to examine antiviral signaling. Cytokine array gene expression and Ingenuity Pathway Analysis (IPA) helped evaluate changes in macrophage signaling in response to viral infection. TNFα-blocking antibodies and macrophages derived from Bai1-/- mice were used.Results: RAMBO treatment of mice reduced recruitment and activation of macrophages/microglia in mice with brain tumors, and showed increased virus replication compared with rHSVQ1. Cytokine gene expression array revealed that RAMBO significantly altered the macrophage inflammatory response to infected glioma cells via altered secretion of TNFα. Furthermore, we showed that BAI1 mediated macrophage TNFα induction in response to oHSV therapy. Intracranial inoculation of wild-type/RAMBO virus in Bai1-/- or wild-type non-tumor-bearing mice revealed the safety of this approach.Conclusions: We have uncovered a new role for BAI1 in facilitating macrophage anti-viral responses. We show that arming oHSV with antiangiogenic Vstat120 also shields them from inflammatory macrophage antiviral response, without reducing safety. Clin Cancer Res; 23(7); 1809-19. ©2016 AACR.
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Affiliation(s)
- Chelsea Bolyard
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio.,The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - W Hans Meisen
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio.,The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Yeshavanth Banasavadi-Siddegowda
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio.,The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Jayson Hardcastle
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Ji Young Yoo
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio.,The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Eric S Wohleb
- Department of Neuroscience, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Jeffrey Wojton
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Jun-Ge Yu
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio.,Department of Otolaryngology, Head and Neck Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Samuel Dubin
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio.,The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Maninder Khosla
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio.,Department of Otolaryngology, Head and Neck Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Bo Xu
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Jonathan Smith
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Christopher Alvarez-Breckenridge
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio.,The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Pete Pow-Anpongkul
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio.,The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Flavia Pichiorri
- Department of Hematology, City of Hope Cancer Center, Duarte, California
| | - Jianying Zhang
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio.,Department of Biomedical Informatics, Center for Biostatistics, The Ohio State University College of Medicine, Columbus, Ohio
| | - Matthew Old
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio.,Department of Otolaryngology, Head and Neck Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Dan Zhu
- Departments of Neurosurgery and Hematology and Medical Oncology, School of Medicine and Winship Cancer Institute, Emory University, Atlanta, Georgia
| | - Erwin G Van Meir
- Departments of Neurosurgery and Hematology and Medical Oncology, School of Medicine and Winship Cancer Institute, Emory University, Atlanta, Georgia
| | - Jonathan P Godbout
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio.,Department of Neuroscience, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Michael A Caligiuri
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Jianhua Yu
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Balveen Kaur
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio. .,The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
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47
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Lawson KA, Mostafa AA, Shi ZQ, Spurrell J, Chen W, Kawakami J, Gratton K, Thakur S, Morris DG. Repurposing Sunitinib with Oncolytic Reovirus as a Novel Immunotherapeutic Strategy for Renal Cell Carcinoma. Clin Cancer Res 2016; 22:5839-5850. [PMID: 27220962 DOI: 10.1158/1078-0432.ccr-16-0143] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/11/2016] [Accepted: 04/18/2016] [Indexed: 11/16/2022]
Abstract
PURPOSE In addition to their direct cytopathic effects, oncolytic viruses are capable of priming antitumor immune responses. However, strategies to enhance the immunotherapeutic potential of these agents are lacking. Here, we investigated the ability of the multi-tyrosine kinase inhibitor and first-line metastatic renal cell carcinoma (RCC) agent, sunitinib, to augment the antitumor immune response generated by oncolytic reovirus. EXPERIMENTAL DESIGN In vitro, oncolysis and chemokine production were assessed in a panel of human and murine RCC cell lines after exposure to reovirus, sunitinib, or their combination. In vivo, the RENCA syngeneic murine model of RCC was employed to determine therapeutic and tumor-specific immune responses after treatment with reovirus (intratumoral), sunitinib, or their combination. Parallel investigations employing the KLN205 syngeneic murine model of lung squamous cell carcinoma (NSCLC) were conducted for further validation. RESULTS Reovirus-mediated oncolysis and chemokine production was observed following RCC infection. Reovirus monotherapy reduced tumor burden and was capable of generating a systemic adaptive antitumor immune response evidenced by increased numbers of tumor-specific CD8+ IFNγ-producing cells. Coadministration of sunitinib with reovirus further reduced tumor burden resulting in improved survival, decreased accumulation of immune suppressor cells, and the establishment of protective immunity upon tumor rechallenge. Similar results were observed for KLN205 tumor-bearing mice, highlighting the potential broad applicability of this approach. CONCLUSIONS The ability to repurpose sunitinib for augmentation of reovirus' immunotherapeutic efficacy positions this novel combination therapy as an attractive strategy ready for clinical testing against a range of histologies, including RCC and NSCLC. Clin Cancer Res; 22(23); 5839-50. ©2016 AACR.
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Affiliation(s)
- Keith A Lawson
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Ahmed A Mostafa
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Zhong Qiao Shi
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Jason Spurrell
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Wenqian Chen
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Jun Kawakami
- Southern Alberta Institute of Urology, University of Calgary, Calgary, Alberta, Canada
| | - Kathy Gratton
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Satbir Thakur
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Donald G Morris
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada. .,Tom Baker Cancer Centre, Calgary, Alberta, Canada
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48
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Gong J, Sachdev E, Mita AC, Mita MM. Clinical development of reovirus for cancer therapy: An oncolytic virus with immune-mediated antitumor activity. World J Methodol 2016; 6:25-42. [PMID: 27019795 PMCID: PMC4804250 DOI: 10.5662/wjm.v6.i1.25] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/26/2016] [Accepted: 02/17/2016] [Indexed: 02/06/2023] Open
Abstract
Reovirus is a double-stranded RNA virus with demonstrated oncolysis or preferential replication in cancer cells. The oncolytic properties of reovirus appear to be dependent, in part, on activated Ras signaling. In addition, Ras-transformation promotes reovirus oncolysis by affecting several steps of the viral life cycle. Reovirus-mediated immune responses can present barriers to tumor targeting, serve protective functions against reovirus systemic toxicity, and contribute to therapeutic efficacy through antitumor immune-mediated effects via innate and adaptive responses. Preclinical studies have demonstrated the broad anticancer activity of wild-type, unmodified type 3 Dearing strain reovirus (Reolysin®) across a spectrum of malignancies. The development of reovirus as an anticancer agent and available clinical data reported from 22 clinical trials will be reviewed.
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49
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To Infection and Beyond: The Multi-Pronged Anti-Cancer Mechanisms of Oncolytic Viruses. Viruses 2016; 8:v8020043. [PMID: 26861381 PMCID: PMC4776198 DOI: 10.3390/v8020043] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 01/17/2016] [Accepted: 02/01/2016] [Indexed: 12/12/2022] Open
Abstract
Over the past 1–2 decades we have witnessed a resurgence of efforts to therapeutically exploit the attributes of lytic viruses to infect and kill tumor cells while sparing normal cells. We now appreciate that the utility of viruses for treating cancer extends far beyond lytic cell death. Viruses are also capable of eliciting humoral and cellular innate and adaptive immune responses that may be directed not only at virus-infected cells but also at uninfected cancer cells. Here we review our current understanding of this bystander effect, and divide the mechanisms into lytic, cytokine, innate cellular, and adaptive phases. Knowing the key pathways and molecular players during virus infection in the context of the cancer microenvironment will be critical to devise strategies to maximize the therapeutic effects of oncolytic viroimmunotherapy.
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50
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Simpson GR, Relph K, Harrington K, Melcher A, Pandha H. Cancer immunotherapy via combining oncolytic virotherapy with chemotherapy: recent advances. Oncolytic Virother 2016; 5:1-13. [PMID: 27579292 PMCID: PMC4996257 DOI: 10.2147/ov.s66083] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Oncolytic viruses are multifunctional anticancer agents with huge clinical potential, and have recently passed the randomized Phase III clinical trial hurdle. Both wild-type and engineered viruses have been selected for targeting of specific cancers, to elicit cytotoxicity, and also to generate antitumor immunity. Single-agent oncolytic virotherapy treatments have resulted in modest effects in the clinic. There is increasing interest in their combination with cytotoxic agents, radiotherapy and immune-checkpoint inhibitors. Similarly to oncolytic viruses, the benefits of chemotherapeutic agents may be that they induce systemic antitumor immunity through the induction of immunogenic cell death of cancer cells. Combining these two treatment modalities has to date resulted in significant potential in vitro and in vivo synergies through various mechanisms without any apparent additional toxicities. Chemotherapy has been and will continue to be integral to the management of advanced cancers. This review therefore focuses on the potential for a number of common cytotoxic agents to be combined with clinically relevant oncolytic viruses. In many cases, this combined approach has already advanced to the clinical trial arena.
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Affiliation(s)
- Guy R Simpson
- Department of Clinical and Experimental Medicine, Targeted Cancer Therapy, Faculty of Health and Medical Sciences, University of Surrey, Guildford
| | - Kate Relph
- Department of Clinical and Experimental Medicine, Targeted Cancer Therapy, Faculty of Health and Medical Sciences, University of Surrey, Guildford
| | - Kevin Harrington
- Targeted Therapy, The Institute of Cancer Research/The Royal Marsden NIHR Biomedical Research Centre, London
| | - Alan Melcher
- Targeted and Biological Therapies, Oncology and Clinical Research, Leeds Institute of Cancer and Pathology, Faculty of Medicine and Health, University of Leeds, Leeds, UK
| | - Hardev Pandha
- Department of Clinical and Experimental Medicine, Targeted Cancer Therapy, Faculty of Health and Medical Sciences, University of Surrey, Guildford
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