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Stergiopoulos GM, Concilio SC, Galanis E. An Update on the Clinical Status, Challenges, and Future Directions of Oncolytic Virotherapy for Malignant Gliomas. Curr Treat Options Oncol 2024; 25:952-991. [PMID: 38896326 DOI: 10.1007/s11864-024-01211-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2024] [Indexed: 06/21/2024]
Abstract
OPINION STATEMENT Malignant gliomas are common central nervous system tumors that pose a significant clinical challenge due to the lack of effective treatments. Glioblastoma (GBM), a grade 4 malignant glioma, is the most prevalent primary malignant brain tumor and is associated with poor prognosis. Current clinical trials are exploring various strategies to combat GBM, with oncolytic viruses (OVs) appearing particularly promising. In addition to ongoing and recently completed clinical trials, one OV (Teserpaturev, Delytact®) received provisional approval for GBM treatment in Japan. OVs are designed to selectively target and eliminate cancer cells while promoting changes in the tumor microenvironment that can trigger and support long-lasting anti-tumor immunity. OVs offer the potential to remodel the tumor microenvironment and reverse systemic immune exhaustion. Additionally, an increasing number of OVs are armed with immunomodulatory payloads or combined with immunotherapy approaches in an effort to promote anti-tumor responses in a tumor-targeted manner. Recently completed oncolytic virotherapy trials can guide the way for future treatment individualization through patient preselection, enhancing the likelihood of achieving the highest possible clinical success. These trials also offer valuable insight into the numerous challenges inherent in malignant glioma treatment, some of which OVs can help overcome.
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Affiliation(s)
| | | | - Evanthia Galanis
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA.
- Department of Oncology, Mayo Clinic, Rochester, MN, USA.
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2
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Gao X, Liu J, Sun R, Zhang J, Cao X, Zhang Y, Zhao M. Alliance between titans: combination strategies of CAR-T cell therapy and oncolytic virus for the treatment of hematological malignancies. Ann Hematol 2023:10.1007/s00277-023-05488-9. [PMID: 37853078 DOI: 10.1007/s00277-023-05488-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 09/28/2023] [Indexed: 10/20/2023]
Abstract
There have been several clinical studies using chimeric antigen receptor (CAR)-T cell therapy for different hematological malignancies. It has transformed the therapy landscape for hematologic malignancies dramatically. Nonetheless, in acute myeloid leukemia (AML) and T cell malignancies, it still has a dismal prognosis. Even in the most promising locations, recurrence with CAR-T treatment remains a big concern. Oncolytic viruses (OVs) can directly lyse tumor cells or cause immune responses, and they can be manipulated to create therapeutic proteins, increasing anticancer efficacy. Oncolytic viruses have been proven in a rising number of studies to be beneficial in hematological malignancies. There are limitations that cannot be avoided by using either treatment alone, and the combination of CAR-T cell therapy and oncolytic virus therapy may complement the disadvantages of individual application, enhance the advantages of their respective treatment methods and improve the treatment effect. The alternatives for combining two therapies in hematological malignancies are discussed in this article.
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Affiliation(s)
- Xuejin Gao
- Emergency, Tianjin First Central Hospital, Tianjin, 300192, China
| | - Jile Liu
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, China
| | - Rui Sun
- Nankai University School of Medicine, Tianjin, 300192, China
| | - Jingkun Zhang
- Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, USA
| | - Xinping Cao
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, China
| | - Yi Zhang
- First Center Clinic College of Tianjin Medical University, Tianjin, 300192, China
| | - Mingfeng Zhao
- Department of Hematology, Tianjin First Central Hospital, Tianjin, 300192, China.
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3
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Taylor IP, Lopez JA. Oncolytic adenoviruses and the treatment of pancreatic cancer: a review of clinical trials. J Cancer Res Clin Oncol 2023; 149:8117-8129. [PMID: 37031291 PMCID: PMC10374677 DOI: 10.1007/s00432-023-04735-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 03/31/2023] [Indexed: 04/10/2023]
Abstract
PURPOSE Pancreatic ductal adenocarcinoma (PDAC) remains a common and difficult cancer to treat. Surgical resection and chemotherapy are standard of care and clinical outcomes remain poor. Oncolytic adenoviruses are a unique approach to the treatment of this challenging cancer, aiming to overcome the features of this disease that pose the key obstacles to standard therapies. This paper provides a detailed review of the clinical trials of conditionally-replicative adenoviruses in pancreatic cancer to date, with a brief summary of the past preclinical literature and future prospects of this therapy. METHODS MEDLINE, Embase, and clinicaltrials.gov were searched from inception to December 23rd 2022 for clinical trials of conditionally-replicative adenoviruses used in patients with pancreatic ductal adenocarcinoma. Primary features for review included patient demographics, treatment protocol including dose and administration route, adverse events, patient responses and survival rates. RESULTS The six published clinical trials suggest that objective clinical responses can be achieved with a tolerable level of side effects, even at high viral doses. The more clinically adaptable intravenous route of administration also appears to be as well tolerated as the more challenging intratumoural injections. CONCLUSION Published clinical trials provide data of the safety and some signs of oncolytic activity of conditionally-replicative adenoviruses in patients with pancreatic cancer. Importantly, on the latest trials, the easier intravenous route of administration seems to be well tolerated and safe, providing the opportunity for further clinical evaluation. It is hoped that the ongoing clinical trials will yield more promising results of this therapeutic approach against a currently intractable disease.
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Affiliation(s)
- Isobel P. Taylor
- School of Medicine and Dentistry, Griffith University, Gold Coast, Australia
| | - J. Alejandro Lopez
- School of Environment and Sciences, Griffith University, Nathan, Australia
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4
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Reale A, Krutzke L, Cadamuro M, Vitiello A, von Einem J, Kochanek S, Palù G, Parolin C, Calistri A. Human Monocytes Are Suitable Carriers for the Delivery of Oncolytic Herpes Simplex Virus Type 1 In Vitro and in a Chicken Embryo Chorioallantoic Membrane Model of Cancer. Int J Mol Sci 2023; 24:ijms24119255. [PMID: 37298206 DOI: 10.3390/ijms24119255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
Oncolytic viruses (OVs) are promising therapeutics for tumors with a poor prognosis. An OV based on herpes simplex virus type 1 (oHSV-1), talimogene laherparepvec (T-VEC), has been recently approved by the Food and Drug Administration (FDA) and by the European Medicines Agency (EMA) for the treatment of unresectable melanoma. T-VEC, like most OVs, is administered via intratumoral injection, underlining the unresolved problem of the systemic delivery of the oncolytic agent for the treatment of metastases and deep-seated tumors. To address this drawback, cells with a tropism for tumors can be loaded ex vivo with OVs and used as carriers for systemic oncolytic virotherapy. Here, we evaluated human monocytes as carrier cells for a prototype oHSV-1 with a similar genetic backbone as T-VEC. Many tumors specifically recruit monocytes from the bloodstream, and autologous monocytes can be obtained from peripheral blood. We demonstrate here that oHSV-1-loaded primary human monocytes migrated in vitro towards epithelial cancer cells of different origin. Moreover, human monocytic leukemia cells selectively delivered oHSV-1 to human head-and-neck xenograft tumors grown on the chorioallantoic membrane (CAM) of fertilized chicken eggs after intravascular injection. Thus, our work shows that monocytes are promising carriers for the delivery of oHSV-1s in vivo, deserving further investigation in animal models.
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Affiliation(s)
- Alberto Reale
- Department of Molecular Medicine, University of Padua, 35121 Padua, Italy
| | - Lea Krutzke
- Department of Gene Therapy, Ulm University Medical Center, 89081 Ulm, Germany
| | | | - Adriana Vitiello
- Department of Molecular Medicine, University of Padua, 35121 Padua, Italy
| | - Jens von Einem
- Institute of Virology, Ulm University Medical Center, 89081 Ulm, Germany
| | - Stefan Kochanek
- Department of Gene Therapy, Ulm University Medical Center, 89081 Ulm, Germany
| | - Giorgio Palù
- Department of Molecular Medicine, University of Padua, 35121 Padua, Italy
| | - Cristina Parolin
- Department of Molecular Medicine, University of Padua, 35121 Padua, Italy
| | - Arianna Calistri
- Department of Molecular Medicine, University of Padua, 35121 Padua, Italy
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5
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Jia Y, Wang Y, Dunmall LSC, Lemoine NR, Wang P, Wang Y. Syrian hamster as an ideal animal model for evaluation of cancer immunotherapy. Front Immunol 2023; 14:1126969. [PMID: 36923404 PMCID: PMC10008950 DOI: 10.3389/fimmu.2023.1126969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 02/09/2023] [Indexed: 03/02/2023] Open
Abstract
Cancer immunotherapy (CIT) has emerged as an exciting new pillar of cancer treatment. Although benefits have been achieved in individual patients, the overall response rate is still not satisfactory. To address this, an ideal preclinical animal model for evaluating CIT is urgently needed. Syrian hamsters present similar features to humans with regard to their anatomy, physiology, and pathology. Notably, the histological features and pathological progression of tumors and the complexity of the tumor microenvironment are equivalent to the human scenario. This article reviews the current tumor models in Syrian hamster and the latest progress in their application to development of tumor treatments including immune checkpoint inhibitors, cytokines, adoptive cell therapy, cancer vaccines, and oncolytic viruses. This progress strongly advocates Syrian hamster as an ideal animal model for development and assessment of CIT for human cancer treatments. Additionally, the challenges of the Syrian hamster as an animal model for CIT are also discussed.
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Affiliation(s)
- Yangyang Jia
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, School of Basic Medical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yanru Wang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, School of Basic Medical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Louisa S Chard Dunmall
- Centre for Cancer Biomarkers & Biotherapeutics, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Nicholas R. Lemoine
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, School of Basic Medical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
- Centre for Cancer Biomarkers & Biotherapeutics, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Pengju Wang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, School of Basic Medical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yaohe Wang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, School of Basic Medical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
- Centre for Cancer Biomarkers & Biotherapeutics, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
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6
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Li X, Sun X, Wang B, Li Y, Tong J. Oncolytic virus-based hepatocellular carcinoma treatment: Current status, intravenous delivery strategies, and emerging combination therapeutic solutions. Asian J Pharm Sci 2023; 18:100771. [PMID: 36896445 PMCID: PMC9989663 DOI: 10.1016/j.ajps.2022.100771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 10/24/2022] [Accepted: 12/04/2022] [Indexed: 12/30/2022] Open
Abstract
Current treatments for advanced hepatocellular carcinoma (HCC) have limited success in improving patients' quality of life and prolonging life expectancy. The clinical need for more efficient and safe therapies has contributed to the exploration of emerging strategies. Recently, there has been increased interest in oncolytic viruses (OVs) as a therapeutic modality for HCC. OVs undergo selective replication in cancerous tissues and kill tumor cells. Strikingly, pexastimogene devacirepvec (Pexa-Vec) was granted an orphan drug status in HCC by the U.S. Food and Drug Administration (FDA) in 2013. Meanwhile, dozens of OVs are being tested in HCC-directed clinical and preclinical trials. In this review, the pathogenesis and current therapies of HCC are outlined. Next, we summarize multiple OVs as single therapeutic agents for the treatment of HCC, which have demonstrated certain efficacy and low toxicity. Emerging carrier cell-, bioengineered cell mimetic- or nonbiological vehicle-mediated OV intravenous delivery systems in HCC therapy are described. In addition, we highlight the combination treatments between oncolytic virotherapy and other modalities. Finally, the clinical challenges and prospects of OV-based biotherapy are discussed, with the aim of continuing to develop a fascinating approach in HCC patients.
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Affiliation(s)
- Xinguo Li
- The First Hospital of China Medical University, Shenyang 110001, China
| | - Xiaonan Sun
- The 4th People's Hospital of Shenyang, Shenyang 110031, China
| | - Bingyuan Wang
- The First Hospital of China Medical University, Shenyang 110001, China
| | - Yiling Li
- The First Hospital of China Medical University, Shenyang 110001, China
| | - Jing Tong
- The First Hospital of China Medical University, Shenyang 110001, China
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7
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Repeated dosing improves oncolytic rhabdovirus therapy in mice via interactions with intravascular monocytes. Commun Biol 2022; 5:1385. [PMID: 36536097 PMCID: PMC9761050 DOI: 10.1038/s42003-022-04254-3] [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: 08/12/2021] [Accepted: 11/11/2022] [Indexed: 12/23/2022] Open
Abstract
There is debate in the field of oncolytic virus (OV) therapy, whether a single viral dose, or multiple administrations, is better for tumor control. Using intravital microscopy, we describe the fate of vesicular stomatitis virus (VSV) delivered systemically as a first or a second dose. Following primary administration, VSV binds to the endothelium, initiates tumor infection and activates a proinflammatory response. This initial OV dose induces neutrophil migration into the tumor and limits viral replication. OV administered as a second dose fails to infect the tumor and is captured by intravascular monocytes. Despite a lack of direct infection, this second viral dose, in a monocyte-dependent fashion, enhances and sustains infection by the first viral dose, promotes CD8 T cell recruitment, delays tumor growth and improves survival in multi-dosing OV therapy. Thus, repeated VSV dosing engages monocytes to post-condition the tumor microenvironment for improved infection and anticancer T cell responses. Understanding the complex interactions between the subsequent viral doses is crucial for improving the efficiency of OV therapy and virus-based vaccines.
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8
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Reale A, Calistri A, Altomonte J. Giving Oncolytic Viruses a Free Ride: Carrier Cells for Oncolytic Virotherapy. Pharmaceutics 2021; 13:pharmaceutics13122192. [PMID: 34959474 PMCID: PMC8709025 DOI: 10.3390/pharmaceutics13122192] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 12/28/2022] Open
Abstract
Oncolytic viruses (OVs) are an emerging class of therapeutics which combine multiple mechanisms of action, including direct cancer cell-killing, immunotherapy and gene therapy. A growing number of clinical trials have indicated that OVs have an excellent safety profile and provide some degree of efficacy, but to date only a single OV drug, HSV-1 talimogene laherparepvec (T-Vec), has achieved marketing approval in the US and Europe. An important issue to consider in order to accelerate the clinical advancement of OV agents is the development of an effective delivery system. Currently, the most commonly employed OV delivery route is intratumoral; however, to target metastatic diseases and tumors that cannot be directly accessed, it is of great interest to develop effective approaches for the systemic delivery of OVs, such as the use of carrier cells. In general, the ideal carrier cell should have a tropism towards the tumor microenvironment (TME), and it must be susceptible to OV infection but remain viable long enough to allow migration and finally release of the OV within the tumor bed. Mesenchymal stem cells (MSCs) have been heavily investigated as carrier cells due to their inherent tumor tropism, in spite of some disadvantages in biodistribution. This review focuses on the other promising candidate carrier cells under development and discusses their interaction with specific OVs and future research lines.
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Affiliation(s)
- Alberto Reale
- Department of Molecular Medicine, University of Padua, 35121 Padua, Italy; (A.R.); (A.C.)
| | - Arianna Calistri
- Department of Molecular Medicine, University of Padua, 35121 Padua, Italy; (A.R.); (A.C.)
| | - Jennifer Altomonte
- Department of Internal Medicine II, Klinikum Rechts der Isar, Technical University of Munich, 81675 Munich, Germany
- Correspondence:
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9
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Geisler A, Hazini A, Heimann L, Kurreck J, Fechner H. Coxsackievirus B3-Its Potential as an Oncolytic Virus. Viruses 2021; 13:v13050718. [PMID: 33919076 PMCID: PMC8143167 DOI: 10.3390/v13050718] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 02/06/2023] Open
Abstract
Oncolytic virotherapy represents one of the most advanced strategies to treat otherwise untreatable types of cancer. Despite encouraging developments in recent years, the limited fraction of patients responding to therapy has demonstrated the need to search for new suitable viruses. Coxsackievirus B3 (CVB3) is a promising novel candidate with particularly valuable features. Its entry receptor, the coxsackievirus and adenovirus receptor (CAR), and heparan sulfate, which is used for cellular entry by some CVB3 variants, are highly expressed on various cancer types. Consequently, CVB3 has broad anti-tumor activity, as shown in various xenograft and syngeneic mouse tumor models. In addition to direct tumor cell killing the virus induces a strong immune response against the tumor, which contributes to a substantial increase in the efficiency of the treatment. The toxicity of oncolytic CVB3 in healthy tissues is variable and depends on the virus strain. It can be abrogated by genetic engineering the virus with target sites of microRNAs. In this review, we present an overview of the current status of the development of CVB3 as an oncolytic virus and outline which steps still need to be accomplished to develop CVB3 as a therapeutic agent for clinical use in cancer treatment.
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Affiliation(s)
- Anja Geisler
- Department of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany; (A.G.); (L.H.); (J.K.)
| | - Ahmet Hazini
- Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK;
| | - Lisanne Heimann
- Department of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany; (A.G.); (L.H.); (J.K.)
| | - Jens Kurreck
- Department of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany; (A.G.); (L.H.); (J.K.)
| | - Henry Fechner
- Department of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany; (A.G.); (L.H.); (J.K.)
- Correspondence: ; Tel.: +49-30-31-47-21-81
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10
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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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11
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Lemos de Matos A, Franco LS, McFadden G. Oncolytic Viruses and the Immune System: The Dynamic Duo. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2020; 17:349-358. [PMID: 32071927 PMCID: PMC7015832 DOI: 10.1016/j.omtm.2020.01.001] [Citation(s) in RCA: 139] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Oncolytic viruses (OVs) constitute a new and promising immunotherapeutic approach toward cancer treatment. This therapy takes advantage of the natural propensity of most tumor cells to be infected by specific OVs. Besides the direct killing potential (oncolysis), what makes OV administration attractive for the present cancer immunotherapeutic scenario is the capacity to induce two new overlapping, but distinct, immunities: anti-tumoral and anti-viral. OV infection and oncolysis naturally elicit both innate and adaptive immune responses (required for long-term anti-tumoral immunity); at the same time, the viral infection prompts an anti-viral response. In this review, we discuss the dynamic interaction between OVs and the triggered responses of the immune system. The anti-OV immunological events that lead to viral clearance and the strategies to deal with such potential loss of the therapeutic virus are discussed. Additionally, we review the immune stimulatory actions induced by OVs through different inherent strategies, such as modulation of the tumor microenvironment, the role of immunogenic cell death, and the consequences of genetically modifying OVs by arming them with therapeutic transgenes. An understanding of the balance between the OV-induced anti-tumoral versus anti-viral immunities will provide insight when choosing the appropriate virotherapy for any specific cancer.
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Affiliation(s)
- Ana Lemos de Matos
- Biodesign Center for Immunotherapy, Vaccines, and Virotherapy (B-CIVV), The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Lina S Franco
- Biodesign Center for Immunotherapy, Vaccines, and Virotherapy (B-CIVV), The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Grant McFadden
- Biodesign Center for Immunotherapy, Vaccines, and Virotherapy (B-CIVV), The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
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12
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Yokoda R, Nagalo BM, Vernon B, Oklu R, Albadawi H, DeLeon TT, Zhou Y, Egan JB, Duda DG, Borad MJ. Oncolytic virus delivery: from nano-pharmacodynamics to enhanced oncolytic effect. Oncolytic Virother 2017; 6:39-49. [PMID: 29184854 PMCID: PMC5687448 DOI: 10.2147/ov.s145262] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
With the advancement of a growing number of oncolytic viruses (OVs) to clinical development, drug delivery is becoming an important barrier to overcome for optimal therapeutic benefits. Host immunity, tumor microenvironment and abnormal vascularity contribute to inefficient vector delivery. A number of novel approaches for enhanced OV delivery are under evaluation, including use of nanoparticles, immunomodulatory agents and complex viral–particle ligands along with manipulations of the tumor microenvironment. This field of OV delivery has quickly evolved to bioengineering of complex nanoparticles that could be deposited within the tumor using minimal invasive image-guided delivery. Some of the strategies include ultrasound (US)-mediated cavitation-enhanced extravasation, magnetic viral complexes delivery, image-guided infusions with focused US and targeting photodynamic virotherapy. In addition, strategies that modulate tumor microenvironment to decrease extracellular matrix deposition and increase viral propagation are being used to improve tumor penetration by OVs. Some involve modification of the viral genome to enhance their tumoral penetration potential. Here, we highlight the barriers to oncolytic viral delivery, and discuss the challenges to improving it and the perspectives of establishing new modes of active delivery to achieve enhanced oncolytic effects.
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Affiliation(s)
- Raquel Yokoda
- Division of Hematology Oncology, Department of Medicine, Mayo Clinic, Scottsdale
| | - Bolni M Nagalo
- Division of Hematology Oncology, Department of Medicine, Mayo Clinic, Scottsdale
| | - Brent Vernon
- Department of Biomedical Engineering, Arizona State University, Tempe
| | - Rahmi Oklu
- Division of Vascular and Interventional Radiology, Department of Radiology, Mayo Clinic, Scottsdale, AZ
| | - Hassan Albadawi
- Division of Vascular and Interventional Radiology, Department of Radiology, Mayo Clinic, Scottsdale, AZ
| | - Thomas T DeLeon
- Division of Hematology Oncology, Department of Medicine, Mayo Clinic, Scottsdale
| | - Yumei Zhou
- Division of Hematology Oncology, Department of Medicine, Mayo Clinic, Scottsdale
| | - Jan B Egan
- Division of Hematology Oncology, Department of Medicine, Mayo Clinic, Scottsdale
| | - Dan G Duda
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, USA
| | - Mitesh J Borad
- Division of Hematology Oncology, Department of Medicine, Mayo Clinic, Scottsdale
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13
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Tollefson AE, Ying B, Spencer JF, Sagartz JE, Wold WSM, Toth K. Pathology in Permissive Syrian Hamsters after Infection with Species C Human Adenovirus (HAdV-C) Is the Result of Virus Replication: HAdV-C6 Replicates More and Causes More Pathology than HAdV-C5. J Virol 2017; 91:e00284-17. [PMID: 28250128 PMCID: PMC5411597 DOI: 10.1128/jvi.00284-17] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 02/22/2017] [Indexed: 02/06/2023] Open
Abstract
Syrian hamsters are permissive for the replication of species C human adenoviruses (HAdV-C). The virus replicates to high titers in the liver of these animals after intravenous infection, while respiratory infection results in virus replication in the lung. Here we show that two types belonging to species C, HAdV-C5 and HAdV-C6, replicate to significantly different extents and cause pathology with significantly different severities, with HAdV-C6 replicating better and inducing more severe and more widespread lesions. The virus burdens in the livers of HAdV-C6-infected hamsters are higher than the virus burdens in HAdV-C5-infected ones because more of the permissive hepatocytes get infected. Furthermore, when hamsters are infected intravenously with HAdV-C6, live, infectious virus can be isolated from the lung and the kidney, which is not seen with HAdV-C5. Similarly to mouse models, in hamsters, HAdV-C6 is sequestered by macrophages to a lesser degree than HAdV-C5. Depletion of Kupffer cells from the liver greatly increases the replication of HAdV-C5 in the liver, while it has only a modest effect on the replication of HAdV-C6. Elimination of Kupffer cells also dramatically increases the pathology induced by HAdV-C5. These findings indicate that in hamsters, pathology resulting from intravenous infection with adenoviruses is caused mostly by replication in hepatocytes and not by the abortive infection of Kupffer cells and the following cytokine storm.IMPORTANCE Immunocompromised human patients can develop severe, often lethal adenovirus infections. Respiratory adenovirus infection among military recruits is a serious problem, in some cases requiring hospitalization of the patient. Furthermore, adenovirus-based vectors are frequently used as experimental viral therapeutic agents. Thus, it is imperative that we investigate the pathogenesis of adenoviruses in a permissive animal model. Syrian hamsters are susceptible to infection with certain human adenoviruses, and the pathology accompanying these infections is similar to what is observed with adenovirus-infected human patients. We demonstrate that replication in permissive cells in a susceptible host animal is a major part of the mechanism by which systemic adenovirus infection induces pathology, as opposed to the chiefly immune-mediated pathology observed in nonsusceptible hosts. These findings support the use of compounds inhibiting adenovirus replication as a means to block adenovirus-induced pathology.
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Affiliation(s)
- Ann E Tollefson
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, Missouri, USA
| | - Baoling Ying
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, Missouri, USA
| | - Jacqueline F Spencer
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, Missouri, USA
| | - John E Sagartz
- Department of Comparative Medicine, Saint Louis University, St. Louis, Missouri, USA
| | - William S M Wold
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, Missouri, USA
| | - Karoly Toth
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, Missouri, USA
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14
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Nistal-Villan E, Poutou J, Rodríguez-Garcia E, Buñuales M, Carte-Abad B, Prieto J, Gonzalez-Aseguinolaza G, Hernandez-Alcoceba R, Larrea E. A Versatile Vector for In Vivo Monitoring of Type I Interferon Induction and Signaling. PLoS One 2016; 11:e0152031. [PMID: 27007218 PMCID: PMC4805199 DOI: 10.1371/journal.pone.0152031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 03/08/2016] [Indexed: 12/02/2022] Open
Abstract
Development of reporter systems for in vivo examination of IFN-β induction or signaling of type I interferon (IFN-I) pathways is of great interest in order to characterize biological responses to different inducers such as viral infections. Several reporter mice have been developed to monitor the induction of both pathways in response to different agonists. However, alternative strategies that do not require transgenic mice breeding have to date not been reported. In addition, detection of these pathways in vivo in animal species other than mice has not yet been addressed. Herein we describe a simple method based on the use of an adeno-associated viral vector (AAV8-3xIRF-ISRE-Luc) containing an IFN-β induction and signaling-sensitive promoter sequence controlling the expression of the reporter gene luciferase. This vector is valid for monitoring IFN-I responses in vivo elicited by diverse stimuli in different organs. Intravenous administration of the vector in C57BL/6 mice and Syrian hamsters was able to detect activation of the IFN pathway in the liver upon systemic treatment with different pro-inflammatory agents and infection with Newcastle disease virus (NDV). In addition, intranasal instillation of AAV8-3xIRF-ISRE-Luc showed a rapid and transient IFN-I response in the respiratory tract of mice infected with the influenza A/PR8/34 virus lacking the NS1 protein. In comparison, this response was delayed and exacerbated in mice infected with influenza A/PR/8 wild type virus. In conclusion, the AAV8-3xIRF-ISRE-Luc vector offers the possibility of detecting IFN-I activation in response to different stimuli and in different animal models with no need for reporter transgenic animals.
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Affiliation(s)
- Estanislao Nistal-Villan
- Gene Therapy and Regulation of Gene Expression Program, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA Navarra Institute for Health Research, Pamplona, Spain
| | - Joanna Poutou
- Gene Therapy and Regulation of Gene Expression Program, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA Navarra Institute for Health Research, Pamplona, Spain
| | - Estefania Rodríguez-Garcia
- Gene Therapy and Regulation of Gene Expression Program, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA Navarra Institute for Health Research, Pamplona, Spain
| | - Maria Buñuales
- Gene Therapy and Regulation of Gene Expression Program, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA Navarra Institute for Health Research, Pamplona, Spain
| | - Beatriz Carte-Abad
- Gene Therapy and Regulation of Gene Expression Program, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA Navarra Institute for Health Research, Pamplona, Spain
| | - Jesus Prieto
- Gene Therapy and Regulation of Gene Expression Program, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA Navarra Institute for Health Research, Pamplona, Spain
| | - Gloria Gonzalez-Aseguinolaza
- Gene Therapy and Regulation of Gene Expression Program, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA Navarra Institute for Health Research, Pamplona, Spain
| | - Ruben Hernandez-Alcoceba
- Gene Therapy and Regulation of Gene Expression Program, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- IdiSNA Navarra Institute for Health Research, Pamplona, Spain
- * E-mail: (EL); (RHA)
| | - Esther Larrea
- Instituto de Salud Tropical, University of Navarra, Pamplona, Spain
- IdiSNA Navarra Institute for Health Research, Pamplona, Spain
- * E-mail: (EL); (RHA)
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15
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Hernandez-Alcoceba R, Poutou J, Ballesteros-Briones MC, Smerdou C. Gene therapy approaches against cancer using in vivo and ex vivo gene transfer of interleukin-12. Immunotherapy 2016; 8:179-98. [PMID: 26786809 DOI: 10.2217/imt.15.109] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
IL-12 is an immunostimulatory cytokine with strong antitumor properties. Systemic administration of IL-12 in cancer patients led to severe toxic effects, prompting the development of gene therapy vectors able to express this cytokine locally in tumors. Both nonviral and viral vectors have demonstrated a high antitumor efficacy in preclinical tumor models. Some of these vectors, including DNA electroporation, adenovirus and ex vivo transduced dendritic cells, were tested in patients, showing low toxicity and moderate antitumor efficacy. IL-12 activity can be potentiated by molecules with immunostimulatory, antiangiogenic or cytotoxic activity. These combination therapies are of clinical interest because they could lower the threshold for IL-12 efficacy, increasing the therapeutic potential of gene therapy and preventing the toxicity mediated by this cytokine.
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Affiliation(s)
- Ruben Hernandez-Alcoceba
- Division of Gene Therapy, CIMA, University of Navarra, Pamplona 31008 Spain.,Instituto de Investigación Sanitaria de Navarra, c/Irunlarrea 3, Pamplona 31008, Spain
| | - Joanna Poutou
- Division of Gene Therapy, CIMA, University of Navarra, Pamplona 31008 Spain.,Instituto de Investigación Sanitaria de Navarra, c/Irunlarrea 3, Pamplona 31008, Spain
| | - María Cristina Ballesteros-Briones
- Division of Gene Therapy, CIMA, University of Navarra, Pamplona 31008 Spain.,Instituto de Investigación Sanitaria de Navarra, c/Irunlarrea 3, Pamplona 31008, Spain
| | - Cristian Smerdou
- Division of Gene Therapy, CIMA, University of Navarra, Pamplona 31008 Spain.,Instituto de Investigación Sanitaria de Navarra, c/Irunlarrea 3, Pamplona 31008, Spain
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16
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Nistal-Villan E, Bunuales M, Poutou J, Gonzalez-Aparicio M, Bravo-Perez C, Quetglas JI, Carte B, Gonzalez-Aseguinolaza G, Prieto J, Larrea E, Hernandez-Alcoceba R. Enhanced therapeutic effect using sequential administration of antigenically distinct oncolytic viruses expressing oncostatin M in a Syrian hamster orthotopic pancreatic cancer model. Mol Cancer 2015; 14:210. [PMID: 26671477 PMCID: PMC4681018 DOI: 10.1186/s12943-015-0479-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 12/09/2015] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND The limited efficacy of current treatments against pancreatic cancer has prompted the search of new alternatives such as virotherapy. Activation of the immune response against cancer cells is emerging as one of the main mechanisms of action of oncolytic viruses (OV). Direct oncolysis releases tumor antigens, and viral replication within the tumor microenvironment is a potent danger signal. Arming OV with immunostimulatory transgenes further enhances their therapeutic effect. However, standard virotherapy protocols do not take full advantage of OV as cancer vaccines because repeated viral administrations may polarize immune responses against strong viral antigens, and the rapid onset of neutralizing antibodies limits the efficacy of redosing. An alternative paradigm based on sequential combination of antigenically distinct OV has been recently proposed. METHODS We have developed a protocol consisting of sequential intratumor administrations of new Adenovirus (Ad) and Newcastle Disease Virus (NDV)-based OV encoding the immunostimulatory cytokine oncostatin M (OSM). Transgene expression, toxicity and antitumor effect were evaluated using an aggressive orthotopic pancreatic cancer model in Syrian hamsters, which are sensitive to OSM and permissive for replication of both OVs. RESULTS NDV-OSM was more cytolytic, whereas Ad-OSM caused higher OSM expression in vivo. Both viruses achieved only a marginal antitumor effect in monotherapy. In addition, strong secretion of OSM in serum limited the maximal tolerated dose of Ad-OSM. In contrast, moderate doses of Ad-OSM followed one week later by NDV-OSM were safe, showed a significant antitumor effect and stimulated immune responses against cancer cells. Similar efficacy was observed when the order of virus administrations was reversed. CONCLUSION Sequential administration of oncolytic Ad and NDV encoding OSM is a promising approach against pancreatic cancer.
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Affiliation(s)
- Estanislao Nistal-Villan
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain. .,IdiSNA, Navarra health research institute, Pamplona, Spain.
| | - Maria Bunuales
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain. .,IdiSNA, Navarra health research institute, Pamplona, Spain.
| | - Joanna Poutou
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain. .,IdiSNA, Navarra health research institute, Pamplona, Spain.
| | - Manuela Gonzalez-Aparicio
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain. .,IdiSNA, Navarra health research institute, Pamplona, Spain.
| | - Carlos Bravo-Perez
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain.
| | - Jose I Quetglas
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain. .,IdiSNA, Navarra health research institute, Pamplona, Spain.
| | - Beatriz Carte
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain. .,IdiSNA, Navarra health research institute, Pamplona, Spain.
| | - Gloria Gonzalez-Aseguinolaza
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain. .,IdiSNA, Navarra health research institute, Pamplona, Spain.
| | - Jesus Prieto
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain. .,CIBERehd, University Clinic of Navarra, Pamplona, Spain.
| | - Esther Larrea
- IdiSNA, Navarra health research institute, Pamplona, Spain. .,Instituto de Salud Tropical, University of Navarra, Pamplona, Spain.
| | - Ruben Hernandez-Alcoceba
- Gene Therapy Program. CIMA Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain. .,IdiSNA, Navarra health research institute, Pamplona, Spain.
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17
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Safety and antitumor effect of oncolytic and helper-dependent adenoviruses expressing interleukin-12 variants in a hamster pancreatic cancer model. Gene Ther 2015; 22:696-706. [PMID: 25938192 DOI: 10.1038/gt.2015.45] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 04/03/2015] [Accepted: 04/27/2015] [Indexed: 02/07/2023]
Abstract
Gene transfer of potent immunostimulatory cytokines such as interleukin-12 (IL-12) is a potential treatment for advanced cancer. Different vectors and IL-12 modifications have been developed to avoid side effects associated with high serum levels of the cytokine, while preserving its antitumor properties. Here we have evaluated two alternative strategies using the Syrian hamster as a model for pancreatic cancer metastatic to the liver. Local administration of an oncolytic adenovirus (OAV) expressing a single-chain version of IL-12 caused transient, very intense elevations of IL-12 in serum, resulting in severe toxicity at sub-therapeutic doses. Anchoring IL-12 to the membrane of infected cells by fusion with the transmembrane domain of CD4 reduced systemic exposure to IL-12 and increased the tolerance to the OAV. However, only a modest increase in the therapeutic range was achieved because antitumor potency was also reduced. In contrast, systemic administration of a helper-dependent adenoviral vector (HDAd) equipped with a Mifepristone-inducible expression system allowed sustained and controlled IL-12 production from the liver. This treatment was well tolerated and inhibited the progression of hepatic metastases. We conclude that HDAds are safer than OAVs for the delivery of IL-12, and are promising vectors for immunogene therapy approaches against pancreatic cancer.
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18
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Alzuguren P, Hervas-Stubbs S, Gonzalez-Aseguinolaza G, Poutou J, Fortes P, Mancheno U, Bunuales M, Olagüe C, Razquin N, Van Rooijen N, Enguita M, Hernandez-Alcoceba R. Transient depletion of specific immune cell populations to improve adenovirus-mediated transgene expression in the liver. Liver Int 2015; 35:1274-89. [PMID: 24754307 DOI: 10.1111/liv.12571] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 04/17/2014] [Indexed: 12/22/2022]
Abstract
BACKGROUND & AIMS Adenoviral (Ad) vectors are currently one of the most efficient tools for in vivo gene transfer to the liver. However, anti-Ad immune responses limit the safety and efficacy of these vectors. The initial inflammatory reaction is a concern in terms of toxicity, and it favours the development of cellular and humoral responses leading to short transgene persistence and inefficient vector re-administrations. Therefore, safe and simple ways to interfere with these processes are needed. Study ways to deplete specific immune cell populations and their impact on liver-directed gene transfer. METHODS First-generation Ad vectors encoding reporter genes (luciferase or β-galactosidase) were injected intravenously into Balb/c mice. Kupffer cells and splenic macrophages were depleted by intravenous administration of clodronate liposomes. B lymphocytes, CD4(+) , CD8(+) T lymphocytes or NK cells were depleted by intraperitoneal injection of anti-M plus anti-D, anti-CD4, anti-CD8 or anti-asialo-GM1 antibodies respectively. Long-term evolution of luciferase expression in the liver was monitored by bioluminescence imaging. RESULTS The anti-CD4 monoclonal antibody impaired cellular and humoral immune responses, leading to efficient vector re-administration. Clodronate liposomes had no impact on humoral responses but caused a 100-1000 fold increase in liver transduction, stabilized transgene expression, reduced the concentration of inflammatory cytokines, and inhibited lymphocyte activation. CONCLUSIONS Transient CD4(+) T-cell depletion using antibodies is a clinically feasible procedure that allows efficient Ad redosing. Systemic administration of clodronate liposomes may further increase the safety and efficacy of vectors.
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Affiliation(s)
- Pilar Alzuguren
- Division of Hepatology and Gene Therapy, CIMA, Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain
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19
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Abstract
Cell-based therapeutics have advanced significantly over the past decade and are poised to become a major pillar of modern medicine. Three cell types in particular have been studied in detail for their ability to home to tumors and to deliver a variety of different payloads. Neural stem cells, mesenchymal stem cells and monocytes have each been shown to have great potential as future delivery systems for cancer therapy. A variety of other cell types have also been studied. These results demonstrate that the field of cell-based therapeutics will only continue to grow.
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20
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Hernandez-Alcoceba R, Sangro B, Berraondo P, Gonzalez-Aseguinolaza G, Prieto J. Cytokines for the treatment of gastrointestinal cancers: clinical experience and new perspectives. Expert Opin Investig Drugs 2013; 22:827-41. [PMID: 23594171 DOI: 10.1517/13543784.2013.793307] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Cytokines are key mediators of the immune system and have been proposed as therapeutic agents against cancer, either as recombinant proteins, or as transgenes in gene therapy approaches. Stimulation of immune responses against cancer cells is an appealing method to treat tumors with high risk of relapse and systemic dissemination. AREAS COVERED We provide a critical overview of clinical trials involving the use of cytokines for the treatment of liver, colon and pancreatic cancers. Special attention has been paid to advances in the field of gene therapy and oncolytic viruses. The potential of new developments still in a pre-clinical stage is also discussed. We have revised public sources of information (PubMed, US National Institutes of Health clinical trials database) up to January 2013. EXPERT OPINION The complexity of the immune system and the unfavorable pharmacokinetic properties of cytokines limit the efficacy of these molecules as single agents for the treatment of cancer. Expression from gene therapy vectors, together with new methods of targeting and stabilization, may overcome these hurdles. We believe cytokines will play a crucial role as part of combined approaches, enhancing the action of adoptive cell immunotherapy, oncolytic viruses or biological therapies.
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Affiliation(s)
- Ruben Hernandez-Alcoceba
- CIMA, University of Navarra, Division of Hepatology and Gene Therapy, Foundation for Applied Medical Research, Pamplona, Spain
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