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Gromek P, Senkowska Z, Płuciennik E, Pasieka Z, Zhao LY, Gielecińska A, Kciuk M, Kłosiński K, Kałuzińska-Kołat Ż, Kołat D. Revisiting the standards of cancer detection and therapy alongside their comparison to modern methods. World J Methodol 2024; 14:92982. [DOI: 10.5662/wjm.v14.i2.92982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/15/2024] [Accepted: 04/28/2024] [Indexed: 06/13/2024] Open
Abstract
In accordance with the World Health Organization data, cancer remains at the forefront of fatal diseases. An upward trend in cancer incidence and mortality has been observed globally, emphasizing that efforts in developing detection and treatment methods should continue. The diagnostic path typically begins with learning the medical history of a patient; this is followed by basic blood tests and imaging tests to indicate where cancer may be located to schedule a needle biopsy. Prompt initiation of diagnosis is crucial since delayed cancer detection entails higher costs of treatment and hospitalization. Thus, there is a need for novel cancer detection methods such as liquid biopsy, elastography, synthetic biosensors, fluorescence imaging, and reflectance confocal microscopy. Conventional therapeutic methods, although still common in clinical practice, pose many limitations and are unsatisfactory. Nowadays, there is a dynamic advancement of clinical research and the development of more precise and effective methods such as oncolytic virotherapy, exosome-based therapy, nanotechnology, dendritic cells, chimeric antigen receptors, immune checkpoint inhibitors, natural product-based therapy, tumor-treating fields, and photodynamic therapy. The present paper compares available data on conventional and modern methods of cancer detection and therapy to facilitate an understanding of this rapidly advancing field and its future directions. As evidenced, modern methods are not without drawbacks; there is still a need to develop new detection strategies and therapeutic approaches to improve sensitivity, specificity, safety, and efficacy. Nevertheless, an appropriate route has been taken, as confirmed by the approval of some modern methods by the Food and Drug Administration.
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Affiliation(s)
- Piotr Gromek
- Department of Functional Genomics, Medical University of Lodz, Lodz 90-752, Lodzkie, Poland
| | - Zuzanna Senkowska
- Department of Functional Genomics, Medical University of Lodz, Lodz 90-752, Lodzkie, Poland
| | - Elżbieta Płuciennik
- Department of Functional Genomics, Medical University of Lodz, Lodz 90-752, Lodzkie, Poland
| | - Zbigniew Pasieka
- Department of Biomedicine and Experimental Surgery, Medical University of Lodz, Lodz 90-136, Lodzkie, Poland
| | - Lin-Yong Zhao
- Department of General Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
- Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Adrianna Gielecińska
- Department of Molecular Biotechnology and Genetics, University of Lodz, Lodz 90-237, Lodzkie, Poland
- Doctoral School of Exact and Natural Sciences, University of Lodz, Lodz 90-237, Lodzkie, Poland
| | - Mateusz Kciuk
- Department of Molecular Biotechnology and Genetics, University of Lodz, Lodz 90-237, Lodzkie, Poland
| | - Karol Kłosiński
- Department of Biomedicine and Experimental Surgery, Medical University of Lodz, Lodz 90-136, Lodzkie, Poland
| | - Żaneta Kałuzińska-Kołat
- Department of Functional Genomics, Medical University of Lodz, Lodz 90-752, Lodzkie, Poland
- Department of Biomedicine and Experimental Surgery, Medical University of Lodz, Lodz 90-136, Lodzkie, Poland
| | - Damian Kołat
- Department of Functional Genomics, Medical University of Lodz, Lodz 90-752, Lodzkie, Poland
- Department of Biomedicine and Experimental Surgery, Medical University of Lodz, Lodz 90-136, Lodzkie, Poland
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Epstein AL, Rabkin SD. Safety of non-replicative and oncolytic replication-selective HSV vectors. Trends Mol Med 2024:S1471-4914(24)00136-9. [PMID: 38886138 DOI: 10.1016/j.molmed.2024.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 05/22/2024] [Accepted: 05/28/2024] [Indexed: 06/20/2024]
Abstract
Herpes simplex virus type 1 (HSV-1) is a DNA virus and human pathogen used to construct promising therapeutic vectors. HSV-1 vectors fall into two classes: replication-selective oncolytic vectors for cancer therapy and defective non-replicative vectors for gene therapy. Vectors from each class can accommodate ≥30 kb of inserts, have been approved clinically, and demonstrate a relatively benign safety profile. Despite oncolytic HSV (oHSV) replication in tumors and elicited immune responses, the virus is well tolerated in cancer patients. Current non-replicative vectors elicit only limited immune responses. Seropositivity and immune responses against HSV-1 do not eliminate either the vector or infected cells, and the vectors can therefore be re-administered. In this review we highlight vectors that have been translated to the clinic and host-virus immune interactions that impact on the safety and efficacy of HSVs.
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Affiliation(s)
| | - Samuel D Rabkin
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
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Baugh R, Khalique H, Page E, Lei-Rossmann J, Wan PKT, Johanssen T, Ebner D, Ansorge O, Seymour LW. Targeting NKG2D ligands in glioblastoma with a bispecific T-cell engager is augmented with conventional therapy and enhances oncolytic virotherapy of glioma stem-like cells. J Immunother Cancer 2024; 12:e008460. [PMID: 38724464 PMCID: PMC11086472 DOI: 10.1136/jitc-2023-008460] [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: 04/11/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND Glioblastoma (GBM) almost invariably becomes resistant towards conventional treatment of radiotherapy and temozolomide (TMZ) chemotherapy, partly due to subpopulations of intrinsically resistant glioma stem-like cells (GSC). The oncolytic herpes simplex virus-1 G207 is a promising approach for GBM virotherapy although its efficacy in patients with GBM is often limited. Natural killer group 2 member D ligands (NKG2DLs) are minimally expressed by healthy cells but are upregulated by the DNA damage response (DDR) and in malignant cells with chronic DDR signaling, resulting in innate immune activation. METHODS We have designed a bispecific T-cell engager (BiTE) capable of cross-linking CD3 on T cells with NKG2DL-expressing GBM cells. We then engineered the G207 virus to express the NKG2D BiTE and secrete it from infected cells. The efficacy of the free BiTE and BiTE delivered by G207 was evaluated in combination with conventional therapies in GBM cells and against patient-derived GSCs in the context of T-cell activation and target cell viability. RESULTS NKG2D BiTE-mediated cross-linking of GBM cells and T cells causes antigen-independent T-cell activation, pro-inflammatory cytokine release, and tumor cell death, thereby combining direct viral oncolysis with BiTE-mediated cytotoxicity. Surface NKG2DL expression was further elevated on GBM cells following pretreatment with sublethal doses of TMZ and radiation to induce the DDR, increasing sensitivity towards G207-NKG2D BiTE and achieving synergistic cytotoxicity. We also demonstrate a novel strategy for targeting GSCs that are non-permissive to G207 infection but remain sensitive to NKG2D BiTE. CONCLUSIONS We propose a potential model for targeting GSCs in heterogeneous tumors, whereby differentiated GBM cells infected with G207-NKG2D BiTE produce NKG2D BiTE locally, directing T-cell cytotoxicity towards the GSC subpopulations in the tumor microenvironment.
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Affiliation(s)
- Richard Baugh
- Department of Oncology, University of Oxford, Oxford, UK
| | - Hena Khalique
- Department of Oncology, University of Oxford, Oxford, UK
| | - Emma Page
- Department of Oncology, University of Oxford, Oxford, UK
| | | | | | - Timothy Johanssen
- Target Discovery Institute, University of Oxford Nuffield Department of Medicine, Oxford, UK
| | - Daniel Ebner
- Target Discovery Institute, University of Oxford Nuffield Department of Medicine, Oxford, UK
| | - Olaf Ansorge
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
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O’Connor C, Lathia JD. Seek and destroy: Development of novel viral therapy for EGFR-expressing tumors. MOLECULAR THERAPY. ONCOLOGY 2024; 32:200776. [PMID: 38596292 PMCID: PMC10915779 DOI: 10.1016/j.omton.2024.200776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Affiliation(s)
- Christine O’Connor
- Department of Infection Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
- Case Comprehensive Cancer Center, Cleveland, OH, USA
| | - Justin D. Lathia
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
- Case Comprehensive Cancer Center, Cleveland, OH, USA
- Department of Cardiovascular & Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center, Cleveland Clinic, Cleveland, OH, USA
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Funk C, Uhlig N, Ruzsics Z, Baur F, Peindl M, Nietzer S, Epting K, Vacun G, Dandekar G, Botteron C, Werno C, Grunwald T, Bailer SM. TheraVision: Engineering platform technology for the development of oncolytic viruses based on herpes simplex virus type 1. MOLECULAR THERAPY. ONCOLOGY 2024; 32:200784. [PMID: 38596296 PMCID: PMC10950833 DOI: 10.1016/j.omton.2024.200784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 07/20/2023] [Accepted: 02/26/2024] [Indexed: 04/11/2024]
Abstract
Viruses are able to efficiently penetrate cells, multiply, and eventually kill infected cells, release tumor antigens, and activate the immune system. Therefore, viruses are highly attractive novel agents for cancer therapy. Clinical trials with first generations of oncolytic viruses (OVs) are very promising but show significant need for optimization. The aim of TheraVision was to establish a broadly applicable engineering platform technology for combinatorial oncolytic virus and immunotherapy. Through genetic engineering, an attenuated herpes simplex virus type 1 (HSV1) was generated that showed increased safety compared to the wild-type strain. To demonstrate the modularity and the facilitated generation of new OVs, two transgenes encoding retargeting as well as immunomodulating single-chain variable fragments (scFvs) were integrated into the platform vector. The resulting virus selectively infected epidermal growth factor receptor (EGFR)-expressing cells and produced a functional immune checkpoint inhibitor against programmed cell death protein 1 (PD-1). Thus, both viral-mediated oncolysis and immune-cell-mediated therapy were combined into a single viral vector. Safety and functionality of the armed OVs have been shown in novel preclinical models ranging from patient-derived organoids and tissue-engineered human in vitro 3D tumor models to complex humanized mouse models. Consequently, a novel and proprietary engineering platform vector based on HSV1 is available for the facilitated preclinical development of oncolytic virotherapy.
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Affiliation(s)
- Christina Funk
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Stuttgart, Germany
| | - Nadja Uhlig
- Fraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany
| | - Zsolt Ruzsics
- Department for Medical Microbiology and Hygiene, Institute of Virology, University Medical Center Freiburg, Freiburg, Germany
| | - Florentin Baur
- Chair of Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Röntgenring, Würzburg, Germany
| | - Matthias Peindl
- Chair of Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Röntgenring, Würzburg, Germany
| | - Sarah Nietzer
- Chair of Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Röntgenring, Würzburg, Germany
- Fraunhofer Institute for Silicate Research ISC, Translational Center Regenerative Therapies, Würzburg, Germany
| | - Karina Epting
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Stuttgart, Germany
| | - Gabriele Vacun
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Stuttgart, Germany
| | - Gudrun Dandekar
- Chair of Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Röntgenring, Würzburg, Germany
- Fraunhofer Institute for Silicate Research ISC, Translational Center Regenerative Therapies, Würzburg, Germany
| | - Catherine Botteron
- Fraunhofer Institute for Toxicology and Experimental Medicine, Regensburg, Germany
| | - Christian Werno
- Fraunhofer Institute for Toxicology and Experimental Medicine, Regensburg, Germany
| | - Thomas Grunwald
- Fraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany
| | - Susanne M. Bailer
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Stuttgart, Germany
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Jiang H, Nace R, Ariail E, Ma Y, McGlinch E, Ferguson C, Fernandez Carrasco T, Packiriswamy N, Zhang L, Peng KW, Russell SJ. Oncolytic α-herpesvirus and myeloid-tropic cytomegalovirus cooperatively enhance systemic antitumor responses. Mol Ther 2024; 32:241-256. [PMID: 37927036 PMCID: PMC10787119 DOI: 10.1016/j.ymthe.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/17/2023] [Accepted: 11/03/2023] [Indexed: 11/07/2023] Open
Abstract
Oncolytic virotherapy aims to activate host antitumor immunity. In responsive tumors, intratumorally injected herpes simplex viruses (HSVs) have been shown to lyse tumor cells, resulting in local inflammation, enhanced tumor antigen presentation, and boosting of antitumor cytotoxic lymphocytes. In contrast to HSV, cytomegalovirus (CMV) is nonlytic and reprograms infected myeloid cells, limiting their antigen-presenting functions and protecting them from recognition by natural killer (NK) cells. Here, we show that when co-injected into mouse tumors with an oncolytic HSV, mouse CMV (mCMV) preferentially targeted tumor-associated myeloid cells, promoted the local release of proinflammatory cytokines, and enhanced systemic antitumor immune responses, leading to superior control of both injected and distant contralateral tumors. Deletion of mCMV genes m06, which degrades major histocompatibility complex class I (MHC class I), or m144, a viral MHC class I homolog that inhibits NK activation, was shown to diminish the antitumor activity of the HSV/mCMV combination. However, an mCMV recombinant lacking the m04 gene, which escorts MHC class I to the cell surface, showed superior HSV adjuvanticity. CMV is a potentially promising agent with which to reshape and enhance antitumor immune responses following oncolytic HSV therapy.
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Affiliation(s)
- Haifei Jiang
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA.
| | - Rebecca Nace
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Emily Ariail
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Yejun Ma
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Erin McGlinch
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Coryn Ferguson
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | | | | | - Lianwen Zhang
- 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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Enow JA, Sheikh HI, Rahman MM. Tumor Tropism of DNA Viruses for Oncolytic Virotherapy. Viruses 2023; 15:2262. [PMID: 38005938 PMCID: PMC10675630 DOI: 10.3390/v15112262] [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: 10/17/2023] [Revised: 11/08/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
Oncolytic viruses (OVs) have emerged as one of the most promising cancer immunotherapy agents that selectively target and kill cancer cells while sparing normal cells. OVs are from diverse families of viruses and can possess either a DNA or an RNA genome. These viruses also have either a natural or engineered tropism for cancer cells. Oncolytic DNA viruses have the additional advantage of a stable genome and multiple-transgene insertion capability without compromising infection or replication. Herpes simplex virus 1 (HSV-1), a member of the oncolytic DNA viruses, has been approved for the treatment of cancers. This success with HSV-1 was achievable by introducing multiple genetic modifications within the virus to enhance cancer selectivity and reduce the toxicity to healthy cells. Here, we review the natural characteristics of and genetically engineered changes in selected DNA viruses that enhance the tumor tropism of these oncolytic viruses.
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Affiliation(s)
- Junior A. Enow
- Biodesign Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Hummad I. Sheikh
- Biodesign Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Masmudur M. Rahman
- Biodesign Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
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Robilotti E, Zeitouni NC, Orloff M. Biosafety and biohazard considerations of HSV-1-based oncolytic viral immunotherapy. Front Mol Biosci 2023; 10:1178382. [PMID: 37795219 PMCID: PMC10546393 DOI: 10.3389/fmolb.2023.1178382] [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: 03/02/2023] [Accepted: 08/16/2023] [Indexed: 10/06/2023] Open
Abstract
Oncolytic viral immunotherapies are agents which can directly kill tumor cells and activate an immune response. Oncolytic viruses (OVs) range from native/unmodified viruses to genetically modified, attenuated viruses with the capacity to preferentially replicate in and kill tumors, leaving normal tissue unharmed. Talimogene laherparepvec (T-VEC) is the only OV approved for patient use in the United States; however, during the last 20 years, there have been a substantial number of clinical trials using OV immunotherapies across a broad range of cancers. Like T-VEC, many OV immunotherapies in clinical development are based on the herpes simplex virus type 1 (HSV-1), with genetic modifications for tumor selectivity, safety, and immunogenicity. Despite these modifications, HSV-1 OV immunotherapies are often treated with the same biosafety guidelines as the wild-type virus, potentially leading to reduced patient access and logistical hurdles for treatment centers, including community treatment centers and small group or private practices, and healthcare workers. Despite the lack of real-world evidence documenting possible transmission to close contacts, and in the setting of shedding and biodistribution analyses for T-VEC demonstrating limited infectivity and low risk of spread to healthcare workers, barriers to treatment with OV immunotherapies remain. With comprehensive information and educational programs, our hope is that updated biosafety guidance on OV immunotherapies will reduce logistical hurdles to ensure that patients have access to these innovative and potentially life-saving medicines across treatment settings. This work reviews a comprehensive collection of data in conjunction with the opinions of the authors based on their clinical experience to provide the suggested framework and key considerations for implementing biosafety protocols for OV immunotherapies, namely T-VEC, the only approved agent to date.
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Affiliation(s)
| | - Nathalie C. Zeitouni
- University of Arizona College of Medicine and US Dermatology Partners, Phoenix, AZ, United States
| | - Marlana Orloff
- Thomas Jefferson University Hospital, Philadelphia, PA, United States
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Wang X, Shen Y, Wan X, Hu X, Cai WQ, Wu Z, Xin Q, Liu X, Gui J, Xin HY, Xin HW. Oncolytic virotherapy evolved into the fourth generation as tumor immunotherapy. J Transl Med 2023; 21:500. [PMID: 37491263 PMCID: PMC10369732 DOI: 10.1186/s12967-023-04360-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 07/16/2023] [Indexed: 07/27/2023] Open
Abstract
BACKGROUND Oncolytic virotherapy (OVT) is a promising anti-tumor modality that utilizes oncolytic viruses (OVs) to preferentially attack cancers rather than normal tissues. With the understanding particularly in the characteristics of viruses and tumor cells, numerous innovative OVs have been engineered to conquer cancers, such as Talimogene Laherparepvec (T-VEC) and tasadenoturev (DNX-2401). However, the therapeutic safety and efficacy must be further optimized and balanced to ensure the superior safe and efficient OVT in clinics, and reasonable combination therapy strategies are also important challenges worthy to be explored. MAIN BODY Here we provided a critical review of the development history and status of OVT, emphasizing the mechanisms of enhancing both safety and efficacy. We propose that oncolytic virotherapy has evolved into the fourth generation as tumor immunotherapy. Particularly, to arouse T cells by designing OVs expressing bi-specific T cell activator (BiTA) is a promising strategy of killing two birds with one stone. Amazing combination of therapeutic strategies of OVs and immune cells confers immense potential for managing cancers. Moreover, the attractive preclinical OVT addressed recently, and the OVT in clinical trials were systematically reviewed. CONCLUSION OVs, which are advancing into clinical trials, are being envisioned as the frontier clinical anti-tumor agents coming soon.
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Affiliation(s)
- Xianwang Wang
- Department of Biochemistry and Molecular Biology, Health Science Center, Yangtze University, Jingzhou, 434023, Hubei, China.
| | - Yihua Shen
- The Second School of Clinical Medicine, Yangtze University, Jingzhou, 434023, Hubei, China
| | - Xingxia Wan
- College of Arts and Sciences, Yangtze University, Jingzhou, 434023, Hubei, China
| | - Xiaoqing Hu
- The Second School of Clinical Medicine, Yangtze University, Jingzhou, 434023, Hubei, China
| | - Wen-Qi Cai
- Xinzhou Traditional Chinese Medicine Hospital, Zhongnan Hospital of Wuhan University (Xinzhou), Wuhan, 430000, Hubei, China
| | - Zijun Wu
- The Second School of Clinical Medicine, Yangtze University, Jingzhou, 434023, Hubei, China
| | - Qiang Xin
- School of Graduate Students, Inner Mongolia Medical University, Inner Mongolian Autonomous Region, Hohhot, 010110, China
| | - Xiaoqing Liu
- College of Arts and Sciences, Yangtze University, Jingzhou, 434023, Hubei, China
| | - Jingang Gui
- Laboratory of Tumor Immunology, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Hong-Yi Xin
- The Doctoral Scientific Research Center, People's Hospital of Lianjiang, Guangdong, 524400, China.
- The Doctoral Scientific Research Center, Affiliated People's Hospital of Lianjiang, Guangdong Medical University, Guangdong, 524400, China.
| | - Hong-Wu Xin
- Department of Biochemistry and Molecular Biology, Health Science Center, Yangtze University, Jingzhou, 434023, Hubei, China.
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Kardani K, Sanchez Gil J, Rabkin SD. Oncolytic herpes simplex viruses for the treatment of glioma and targeting glioblastoma stem-like cells. Front Cell Infect Microbiol 2023; 13:1206111. [PMID: 37325516 PMCID: PMC10264819 DOI: 10.3389/fcimb.2023.1206111] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 05/15/2023] [Indexed: 06/17/2023] Open
Abstract
Glioblastoma (GBM) is one of the most lethal cancers, having a poor prognosis and a median survival of only about 15 months with standard treatment (surgery, radiation, and chemotherapy), which has not been significantly extended in decades. GBM demonstrates remarkable cellular heterogeneity, with glioblastoma stem-like cells (GSCs) at the apex. GSCs are a subpopulation of GBM cells that possess the ability to self-renew, differentiate, initiate tumor formation, and manipulate the tumor microenvironment (TME). GSCs are no longer considered a static population of cells with specific markers but are quite flexible phenotypically and in driving tumor heterogeneity and therapeutic resistance. In light of these features, they are a critical target for successful GBM therapy. Oncolytic viruses, in particular oncolytic herpes simplex viruses (oHSVs), have many attributes for therapy and are promising agents to target GSCs. oHSVs are genetically-engineered to selectively replicate in and kill cancer cells, including GSCs, but not normal cells. Moreover, oHSV can induce anti-tumor immune responses and synergize with other therapies, such as chemotherapy, DNA repair inhibitors, and immune checkpoint inhibitors, to potentiate treatment effects and reduce GSC populations that are partly responsible for chemo- and radio-resistance. Herein, we present an overview of GSCs, activity of different oHSVs, clinical trial results, and combination strategies to enhance efficacy, including therapeutic arming of oHSV. Throughout, the therapeutic focus will be on GSCs and studies specifically targeting these cells. Recent clinical trials and approval of oHSV G47Δ in Japan for patients with recurrent glioma demonstrate the efficacy and promise of oHSV therapy.
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Affiliation(s)
| | | | - Samuel D. Rabkin
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
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11
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Bryant JD, Lee JS, De Almeida A, Jacques J, Chang CH, Fassler W, Quéva C, Lerner L, Kennedy EM. Seneca Valley virus replicons are packaged in trans and have the capacity to overcome the limitations of viral transgene expression. Mol Ther Oncolytics 2023; 28:321-333. [PMID: 36938543 PMCID: PMC10018389 DOI: 10.1016/j.omto.2023.02.005] [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: 11/01/2022] [Accepted: 02/10/2023] [Indexed: 02/18/2023] Open
Abstract
Oncolytic viruses (OVs) promote the anti-tumor immune response as their replication, and the subsequent lysis of tumor cells, triggers the activation of immune-sensing pathways. Arming OVs by expressing transgenes with the potential to promote immune cell recruitment and activation is an attractive strategy to enhance OVs' therapeutic benefit. For picornaviruses, a family of OVs with clinical experience, the expression of a transgene is limited by multiple factors: genome physical packaging limits, high rates of recombination, and viral-mediated inhibition of transgene secretion. Here, we evaluated strategies for arming Seneca Valley virus (SVV) with relevant immunomodulatory transgenes. Specificially in the contex of arming SVV, we evaluated transgene maximum size and stabiltity, transgene secretion, and the impact of transgene inclusion on viral fitness. We find that SVV is not capable of expressing secreted payloads and has a transgene packaging capacity of ∼10% of viral genome size. To enable transgene expression, we developed SVV replicons with greater transgene size capacity and secretion capabilities. SVV replicons can be packaged in trans by virus in co-infected cells to express immunomodulatory transgenes in surrounding cells, thus providing a means to enhance the potential of this therapeutic to augment the anti-tumor immune response.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Edward M. Kennedy
- Oncorus, Inc., Andover, MA 01810, USA
- Corresponding author: Edward M. Kennedy, Oncorus, Inc., 4 Corporate Dr., Andover, MA 01810, USA.
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Omole RK, Oluwatola O, Akere MT, Eniafe J, Agboluaje EO, Daramola OB, Ayantunji YJ, Omotade TI, Torimiro N, Ayilara MS, Adeyemi OI, Salinsile OS. Comprehensive assessment on the applications of oncolytic viruses for cancer immunotherapy. Front Pharmacol 2022; 13:1082797. [PMID: 36569326 PMCID: PMC9772532 DOI: 10.3389/fphar.2022.1082797] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 11/24/2022] [Indexed: 12/13/2022] Open
Abstract
The worldwide burden of cancers is increasing at a very high rate, including the aggressive and resistant forms of cancers. Certain levels of breakthrough have been achieved with the conventional treatment methods being used to treat different forms of cancers, but with some limitations. These limitations include hazardous side effects, destruction of non-tumor healthy cells that are rapidly dividing and developing, tumor resistance to anti-cancer drugs, damage to tissues and organs, and so on. However, oncolytic viruses have emerged as a worthwhile immunotherapeutic option for the treatment of different types of cancers. In this treatment approach, oncolytic viruses are being modeled to target cancer cells with optimum cytotoxicity and spare normal cells with optimal safety, without the oncolytic viruses themselves being killed by the host immune defense system. Oncolytic viral infection of the cancer cells are also being genetically manipulated (either by removal or addition of certain genes into the oncolytic virus genome) to make the tumor more visible and available for attack by the host immune cells. Hence, different variants of these viruses are being developed to optimize their antitumor effects. In this review, we examined how grave the burden of cancer is on a global level, particularly in sub-Saharan Africa, major conventional therapeutic approaches to the treatment of cancer and their individual drawbacks. We discussed the mechanisms of action employed by these oncolytic viruses and different viruses that have found their relevance in the fight against various forms of cancers. Some pre-clinical and clinical trials that involve oncolytic viruses in cancer management were reported. This review also examined the toxicity and safety concerns surrounding the adoption of oncolytic viro-immunotherapy for the treatment of cancers and the likely future directions for researchers and general audience who wants updated information.
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Affiliation(s)
- Richard Kolade Omole
- Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Nigeria,Microbiology Unit, Department of Applied Sciences, Osun State College of Technology, Esa-Oke, Nigeria,*Correspondence: Richard Kolade Omole,
| | - Oluwaseyi Oluwatola
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States,Department of Immunology, Moffit Cancer Center, Tampa, FL, United States
| | - Millicent Tambari Akere
- Department of Medicinal and Biological Chemistry, University of Toledo, Toledo, OH, United States
| | - Joseph Eniafe
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | | | | | - Yemisi Juliet Ayantunji
- Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Nigeria,Advanced Space Technology Applications Laboratory, Cooperative Information Network, National Space Research and Development Agency, Ile-Ife, Nigeria
| | | | - Nkem Torimiro
- Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Modupe Stella Ayilara
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
| | - Oluwole Isaac Adeyemi
- Department of Pharmacology, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria
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Hatta M, Kaibori M, Matsushima H, Yoshida T, Okumura T, Hayashi M, Yoshii K, Todo T, Sekimoto M. Efficacy of a third-generation oncolytic herpes simplex virus in refractory soft tissue sarcoma xenograft models. Mol Ther Oncolytics 2022; 25:225-235. [PMID: 35615265 PMCID: PMC9118137 DOI: 10.1016/j.omto.2022.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 04/21/2022] [Indexed: 11/24/2022] Open
Abstract
Malignant soft tissue tumors, particularly highly malignant leiomyosarcomas, are resistant to chemotherapy and associated with a poor prognosis. T-01, a third-generation genetically modified herpes simplex virus type 1, replicates in tumor cells alone and exerts a cell-killing effect. The current study aimed to investigate the antitumor effect of T-01, which is a novel treatment for leiomyosarcoma. In vitro, six human cell lines and one mouse sarcoma cell line were assessed for T-01 cytotoxicity. In vivo, the efficacy of T-01 was examined in subcutaneously transplanted leiomyosarcoma (SK-LMS-1) cells and subcutaneously or intraperitoneally transplanted mouse sarcoma (CCRF S-180II) cells. Cytokines were assessed using ELISpot assay with splenocytes from the allogeneic models for immunological evaluation. T-01 showed cytotoxicity in all seven cell lines (p < 0.001). In the SK-LMS-1 xenotransplantation model, tumor growth was suppressed by T-01 administration (p = 0.02). In the CCRF S-180II subcutaneous tumor model, bilateral tumor growth was significantly suppressed in the T-01-treated group compared with the control group (p < 0.001). In the peritoneal dissemination model, T-01 treatment caused significant survival prolongation compared with the control (p < 0.01). In conclusion, third-generation genetically modified herpes simplex virus type 1 may be an effective novel therapy against refractory sarcomas.
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14
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de la Nava D, Selvi KM, Alonso MM. Immunovirotherapy for Pediatric Solid Tumors: A Promising Treatment That is Becoming a Reality. Front Immunol 2022; 13:866892. [PMID: 35493490 PMCID: PMC9043602 DOI: 10.3389/fimmu.2022.866892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/23/2022] [Indexed: 11/13/2022] Open
Abstract
Immunotherapy has seen tremendous strides in the last decade, acquiring a prominent position at the forefront of cancer treatment since it has been proven to be efficacious for a wide variety of tumors. Nevertheless, while immunotherapy has changed the paradigm of adult tumor treatment, this progress has not yet been translated to the pediatric solid tumor population. For this reason, alternative curative therapies are urgently needed for the most aggressive pediatric tumors. In recent years, oncolytic virotherapy has consolidated as a feasible strategy for cancer treatment, not only for its tumor-specific effects and safety profile but also for its capacity to trigger an antitumor immune response. This review will summarize the current status of immunovirotherapy to treat cancer, focusing on pediatric solid malignancies. We will revisit previous basic, translational, and clinical research and discuss advances in overcoming the existing barriers and limitations to translate this promising therapeutic as an every-day cancer treatment for the pediatric and young adult populations.
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Affiliation(s)
- Daniel de la Nava
- Health Research Institute of Navarra (IdiSNA), Pamplona, Spain
- Programs in Solid Tumors and Neuroscience, Foundation for the Applied Medical Research, Pamplona, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Kadir Mert Selvi
- Health Research Institute of Navarra (IdiSNA), Pamplona, Spain
- Programs in Solid Tumors and Neuroscience, Foundation for the Applied Medical Research, Pamplona, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
| | - Marta M. Alonso
- Health Research Institute of Navarra (IdiSNA), Pamplona, Spain
- Programs in Solid Tumors and Neuroscience, Foundation for the Applied Medical Research, Pamplona, Spain
- Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Spain
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15
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Jin S, Wang Q, Wu H, Pang D, Xu S. Oncolytic viruses for triple negative breast cancer and beyond. Biomark Res 2021; 9:71. [PMID: 34563270 PMCID: PMC8466906 DOI: 10.1186/s40364-021-00318-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 07/29/2021] [Indexed: 12/18/2022] Open
Abstract
Biological therapy is considered an alternative treatment capable of eliciting the same effects on tumors as surgery, radiotherapy, and chemotherapy. As a major player in biological therapy, oncolytic viruses (OVs) have attracted great attention and achieved good results. Specifically, the successful application of OVs in head and neck cancer, as well as melanoma, promoted its research in triple negative breast cancer (TNBC). TNBC is a high-risk molecular type of breast cancer, characterized by strong invasion, easy recurrence, and metastasis. Due to the absence of estrogen and progesterone receptors, as well as the absence of overexpression or gene amplification of human epidermal growth factor receptor 2 (HER2), endocrine therapy and anti HER-2 targeted therapy have proven ineffective. Although chemotherapy has shown substantial efficacy in some TNBC patients, the occurrence of drug resistance and poor prognosis have prompted the exploration of new and effective treatment methods. The emerging concept of OVs provides a new platform to treat TNBC. Indeed, several studies have confirmed the therapeutic effects of OVs in TNBC. Numerous studies have also investigated the efficacy of OVs in other malignances, including solid tumor clinical trials, thus further demonstrating the promising application of oncolytic virotherapy for TNBC. The primary focus of the current review is the examination of OV mechanisms underlying their antitumor properties, while also summarizing the ongoing progress in OV research regarding TNBC treatment, as well as the various combinatorial strategies comprising OVs and other therapies. We also briefly introduce specific relevant clinical trials and discuss some of the progress in the research of novel OVs for the treatment of other malignancies, thereby affirming the significant therapeutic potential of OVs for the treatment of TNBC, as well as other cancers.
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Affiliation(s)
- Shengye Jin
- Harbin Medical University, 157 Baojian Road, Harbin, 150086, China.,Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, China
| | - Qin Wang
- Sino-Russian Medical Research Cen8ter, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, China.,Heilongjiang Academy of Medical Sciences, 157 Baojian Road, Harbin, 150086, China.,Translational Medicine Research and Cooperation Center of Northern China, Harbin Medical University, 150 Haping Road, Harbin, 1550081, China
| | - Hao Wu
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, China.,Sino-Russian Medical Research Cen8ter, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, China.,Translational Medicine Research and Cooperation Center of Northern China, Harbin Medical University, 150 Haping Road, Harbin, 1550081, China
| | - Da Pang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, China. .,Sino-Russian Medical Research Cen8ter, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, China. .,Heilongjiang Academy of Medical Sciences, 157 Baojian Road, Harbin, 150086, China.
| | - Shouping Xu
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, China. .,Heilongjiang Academy of Medical Sciences, 157 Baojian Road, Harbin, 150086, China. .,Translational Medicine Research and Cooperation Center of Northern China, Harbin Medical University, 150 Haping Road, Harbin, 1550081, China.
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16
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Suzuki T, Uchida H, Shibata T, Sasaki Y, Ikeda H, Hamada-Uematsu M, Hamasaki R, Okuda K, Yanagi S, Tahara H. Potent anti-tumor effects of receptor-retargeted syncytial oncolytic herpes simplex virus. MOLECULAR THERAPY-ONCOLYTICS 2021; 22:265-276. [PMID: 34553018 PMCID: PMC8426171 DOI: 10.1016/j.omto.2021.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/12/2021] [Indexed: 11/27/2022]
Abstract
Most oncolytic virotherapy has thus far employed viruses deficient in genes essential for replication in normal cells but not in cancer cells. Intra-tumoral injection of such viruses has resulted in clinically significant anti-tumor effects on the lesions in the vicinity of the injection sites but not on distant visceral metastases. To overcome this limitation, we have developed a receptor-retargeted oncolytic herpes simplex virus employing a single-chain antibody for targeting tumor-associated antigens (RR-oHSV) and its modified version with additional mutations conferring syncytium formation (RRsyn-oHSV). We previously showed that RRsyn-oHSV exhibits preserved antigen specificity and an ∼20-fold higher tumoricidal potency in vitro relative to RR-oHSV. Here, we investigated the in vivo anti-tumor effects of RRsyn-oHSV using human cancer xenografts in immunodeficient mice. With only a single intra-tumoral injection of RRsyn-oHSV at very low doses, all treated tumors regressed completely. Furthermore, intra-venous administration of RRsyn-oHSV resulted in robust anti-tumor effects even against large tumors. We found that these potent anti-tumor effects of RRsyn-oHSV may be associated with the formation of long-lasting tumor cell syncytia not containing non-cancerous cells that appear to trigger death of the syncytia. These results strongly suggest that cancer patients with distant metastases could be effectively treated with our RRsyn-oHSV.
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Affiliation(s)
- Takuma Suzuki
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan.,Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Hiroaki Uchida
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Tomoko Shibata
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Yasuhiko Sasaki
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Hitomi Ikeda
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Mika Hamada-Uematsu
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Ryota Hamasaki
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan.,Ono Pharmaceutical Co., Ltd., Osaka, Japan
| | - Kosaku Okuda
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan.,Ono Pharmaceutical Co., Ltd., Osaka, Japan
| | - Shigeru Yanagi
- Laboratory of Molecular Biochemistry, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Hideaki Tahara
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan.,Department of Cancer Drug Discovery and Development, Osaka International Cancer Institute, Osaka, Japan
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17
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Jahan N, Ghouse SM, Martuza RL, Rabkin SD. In Situ Cancer Vaccination and Immunovirotherapy Using Oncolytic HSV. Viruses 2021; 13:v13091740. [PMID: 34578321 PMCID: PMC8473045 DOI: 10.3390/v13091740] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 12/13/2022] Open
Abstract
Herpes simplex virus (HSV) can be genetically altered to acquire oncolytic properties so that oncolytic HSV (oHSV) preferentially replicates in and kills cancer cells, while sparing normal cells, and inducing anti-tumor immune responses. Over the last three decades, a better understanding of HSV genes and functions, and improved genetic-engineering techniques led to the development of oHSV as a novel immunovirotherapy. The concept of in situ cancer vaccination (ISCV) was first introduced when oHSV was found to induce a specific systemic anti-tumor immune response with an abscopal effect on non-injected tumors, in the process of directly killing tumor cells. Thus, the use of oHSV for tumor vaccination in situ is antigen-agnostic. The research and development of oHSVs have moved rapidly, with the field of oncolytic viruses invigorated by the FDA/EMA approval of oHSV talimogene laherparepvec in 2015 for the treatment of advanced melanoma. Immunovirotherapy can be enhanced by arming oHSV with immunomodulatory transgenes and/or using them in combination with other chemotherapeutic and immunotherapeutic agents. This review offers an overview of the development of oHSV as an agent for ISCV against solid tumors, describing the multitude of different oHSVs and their efficacy in immunocompetent mouse models and in clinical trials.
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Affiliation(s)
- Nusrat Jahan
- Molecular Neurosurgery Laboratory and Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (N.J.); (S.M.G.); (R.L.M.)
| | - Shanawaz M. Ghouse
- Molecular Neurosurgery Laboratory and Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (N.J.); (S.M.G.); (R.L.M.)
| | - Robert L. Martuza
- Molecular Neurosurgery Laboratory and Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (N.J.); (S.M.G.); (R.L.M.)
| | - Samuel D. Rabkin
- Department of Neurosurgery, Massachusetts General Hospital, 185 Cambridge St., CPZN-3800, Boston, MA 02114, USA
- Correspondence:
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Immunomodulatory Arming Factors-The Current Paradigm for Oncolytic Vectors Relies on Immune Stimulating Molecules. Int J Mol Sci 2021; 22:ijms22169051. [PMID: 34445759 DOI: 10.3390/ijms22169051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/15/2021] [Accepted: 08/20/2021] [Indexed: 12/12/2022] Open
Abstract
The dogma of engineering oncolytic viral vectors has shifted from emphasizing the viral lysis of individual cancer cells to the recruitment and coordination of the adaptive immune system to clear the tumor. To accomplish this, researchers have been adding several classes of transgenes to their preferred viral platforms. The most prevalent of these include antibodies and targeting moieties, interleukins and cytokines, and genes which rely on small molecule co-administration for tumor killing. Most current vectors rely exclusively on one of these types of transgenes to elicit the desired immune response to clear tumors, but are not mutually exclusive, with several larger OVs armed with several of these factors. The common theme of emerging armed vectors is to simply initiate or enhance infiltration of effector CD8+ T cells to clear the tumor locally at OV infection sites, and systemically throughout the body where the OV has not infected tumor cells. The precision of oncolytic vectors to target a cell type or tissue remains its key advantage over small-molecule drugs. Unlike chemo- and other drug therapies, viral vectors can be made to specifically infect and grow within tumor cells. This ensures localized expression of the therapeutic transgene to the diseased tissue, thereby limiting systemic toxicity. This review will examine the immunomodulating transgenes of current OVs, describe their general effect on the immune system, and provide the rationale for each vector's use in clearing its targeted tumor.
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Oncolytic Herpes Simplex Virus-Based Therapies for Cancer. Cells 2021; 10:cells10061541. [PMID: 34207386 PMCID: PMC8235327 DOI: 10.3390/cells10061541] [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: 04/13/2021] [Revised: 05/22/2021] [Accepted: 05/26/2021] [Indexed: 12/22/2022] Open
Abstract
With the increased worldwide burden of cancer, including aggressive and resistant cancers, oncolytic virotherapy has emerged as a viable therapeutic option. Oncolytic herpes simplex virus (oHSV) can be genetically engineered to target cancer cells while sparing normal cells. This leads to the direct killing of cancer cells and the activation of the host immunity to recognize and attack the tumor. Different variants of oHSV have been developed to optimize its antitumor effects. In this review, we discuss the development of oHSV, its antitumor mechanism of action and the clinical trials that have employed oHSV variants to treat different types of tumor.
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20
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Antibody Screening System Using a Herpes Simplex Virus (HSV)-Based Probe To Identify a Novel Target for Receptor-Retargeted Oncolytic HSVs. J Virol 2021; 95:JVI.01766-20. [PMID: 33627393 DOI: 10.1128/jvi.01766-20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 02/07/2021] [Indexed: 12/13/2022] Open
Abstract
Herpes simplex virus (HSV) is a promising tool for developing oncolytic virotherapy. We recently reported a platform for receptor-retargeted oncolytic HSVs that incorporates single-chain antibodies (scFvs) into envelope glycoprotein D (gD) to mediate virus entry via tumor-associated antigens. Therefore, it would be useful to develop an efficient system that can screen antibodies that might mediate HSV entry when they are incorporated as scFvs into gD. We created an HSV-based screening probe by the genetic fusion of a gD mutant with ablated binding capability to the authentic HSV entry receptors and the antibody-binding C domain of streptococcal protein G. This engineered virus failed to enter cells through authentic receptors. In contrast, when this virus was conjugated with an antibody specific to an antigen on the cell membrane, it specifically entered cells expressing the cognate antigen. This virus was used as a probe to identify antibodies that mediate virus entry via recognition of certain molecules on the cell membrane other than authentic receptors. Using this method, we identified an antibody specific to epiregulin (EREG), which has been investigated mainly as a secreted growth factor and not necessarily for its precursor that is expressed in a transmembrane form. We constructed an scFv from the anti-EREG antibody for insertion into the retargeted HSV platform and found that the recombinant virus entered cells specifically through EREG expressed by the cells. This novel antibody-screening system may contribute to the discovery of unique and unexpected molecules that might be used for the entry of receptor-retargeted oncolytic HSVs.IMPORTANCE The tropism of the cellular entry of HSV is dependent on the binding of the envelope gD to one of its authentic receptors. This can be fully retargeted to other receptors by inserting scFvs into gD with appropriate modifications. In theory, upon binding to the engineered gD, receptors other than authentic receptors should induce a conformational change in the gD, which activates downstream mechanisms required for viral entry. However, prerequisite factors for receptors to be used as targets of a retargeted virus remain poorly understood, and it is difficult to predict which molecules might be suitable for our retargeted HSV construct. Our HSV-based probe will allow unbiased screening of antibody-antigen pairs that mediate virus entry and might be a useful tool to identify suitable pairs for our construct and to enhance our understanding of virus-cell interactions during infection by HSV and possibly other viruses.
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21
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Parking CAR T Cells in Tumours: Oncolytic Viruses as Valets or Vandals? Cancers (Basel) 2021; 13:cancers13051106. [PMID: 33807553 PMCID: PMC7961585 DOI: 10.3390/cancers13051106] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/01/2021] [Accepted: 03/03/2021] [Indexed: 12/18/2022] Open
Abstract
Oncolytic viruses (OVs) and adoptive T cell therapy (ACT) each possess direct tumour cytolytic capabilities, and their combination potentially seems like a match made in heaven to complement the strengths and weakness of each modality. While providing strong innate immune stimulation that can mobilize adaptive responses, the magnitude of anti-tumour T cell priming induced by OVs is often modest. Chimeric antigen receptor (CAR) modified T cells bypass conventional T cell education through introduction of a synthetic receptor; however, realization of their full therapeutic properties can be stunted by the heavily immune-suppressive nature of the tumour microenvironment (TME). Oncolytic viruses have thus been seen as a natural ally to overcome immunosuppressive mechanisms in the TME which limit CAR T cell infiltration and functionality. Engineering has further endowed viruses with the ability to express transgenes in situ to relieve T cell tumour-intrinsic resistance mechanisms and decorate the tumour with antigen to overcome antigen heterogeneity or loss. Despite this helpful remodeling of the tumour microenvironment, it has simultaneously become clear that not all virus induced effects are favourable for CAR T, begging the question whether viruses act as valets ushering CAR T into their active site, or vandals which cause chaos leading to both tumour and T cell death. Herein, we summarize recent studies combining these two therapeutic modalities and seek to place them within the broader context of viral T cell immunology which will help to overcome the current limitations of effective CAR T therapy to make the most of combinatorial strategies.
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22
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Jiang B, Huang D, He W, Guo W, Yin X, Forsyth P, Lun X, Wang Z. Inhibition of glioma using a novel non-neurotoxic vesicular stomatitis virus. Neurosurg Focus 2021; 50:E9. [PMID: 33524950 DOI: 10.3171/2020.11.focus20839] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 11/17/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The aim of this study was to demonstrate the in vivo safety and antitumor effect of a novel recombinant vesicular stomatitis virus (VSV): G protein less (GLESS)-fusion-associated small transmembrane (FAST)-VSV. METHODS Viral infection efficiency and cell proliferation were detected using an inverted fluorescence microscope and alarmaBlue assay, respectively. To evaluate the safety of the virus, different doses of GLESS-FAST-VSV and a positive control virus (VSV∆M51) were injected into normal F344 rats and C57BL/6 mice, and each animal's weight, survival time, and pathological changes were examined on the following day. To evaluate the efficacy of the virus, RG2 and GL261 cells were used to construct rat and mouse glioma models, respectively, via a stereotactic method. After multiple intratumoral injections of the virus, tumor growth (size) and the survival time of the animals were observed. RESULTS In vitro experiments showed that GLESS-FAST-VSV could infect and kill brain tumor cells and had less toxic effects on normal cells. After direct injection of GLESS-FAST-VSV into the animal brains, all animals tolerated the virus well, and no animal death, encephalitis, or ventriculitis was observed. In contrast, all animals that received brain injections of VSV∆M51 in the brain died. Moreover, multiple injections of GLESS-FAST-VSV in brain tumors significantly prolonged the survival of normal-immunity animals harboring brain tumors. CONCLUSIONS GLESS-FAST-VSV exhibited little neurotoxicity and could be injected directly into the tumor to effectively inhibit tumor growth and prolong the survival of normal-immunity animals, laying a theoretical foundation for the early application of such viruses in clinical trials.
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Affiliation(s)
- Bin Jiang
- 1Department of Neurosurgery, Qilu Hospital of Shandong University, Qingdao, Shandong, China; and
| | - Dezhang Huang
- 1Department of Neurosurgery, Qilu Hospital of Shandong University, Qingdao, Shandong, China; and
| | - Wei He
- 1Department of Neurosurgery, Qilu Hospital of Shandong University, Qingdao, Shandong, China; and
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- 1Department of Neurosurgery, Qilu Hospital of Shandong University, Qingdao, Shandong, China; and
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- 1Department of Neurosurgery, Qilu Hospital of Shandong University, Qingdao, Shandong, China; and
| | - Peter Forsyth
- 2Department of Oncology, University of Calgary, Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
| | - Xueqing Lun
- 2Department of Oncology, University of Calgary, Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
| | - Zhigang Wang
- 1Department of Neurosurgery, Qilu Hospital of Shandong University, Qingdao, Shandong, China; and
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23
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Zhang S, Rabkin SD. The discovery and development of oncolytic viruses: are they the future of cancer immunotherapy? Expert Opin Drug Discov 2020; 16:391-410. [PMID: 33232188 DOI: 10.1080/17460441.2021.1850689] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Despite diverse treatment modalities and novel therapies, many cancers and patients are not effectively treated. Cancer immunotherapy has recently achieved breakthrough status yet is not effective in all cancer types or patients and can generate serious adverse effects. Oncolytic viruses (OVs) are a promising new therapeutic modality that harnesses virus biology and host interactions to treat cancer. OVs, genetically engineered or natural, preferentially replicate in and kill cancer cells, sparing normal cells/tissues, and mediating anti-tumor immunity.Areas covered: This review focuses on OVs as cancer therapeutic agents from a historical perspective, especially strategies to boost their immunotherapeutic activities. OVs offer a multifaceted platform, whose activities are modulated based on the parental virus and genetic alterations. In addition to direct viral effects, many OVs can be armed with therapeutic transgenes to also act as gene therapy vectors, and/or combined with other drugs or therapies.Expert opinion: OVs are an amazingly versatile and malleable class of cancer therapies. They tend to target cellular and host physiology as opposed to specific genetic alterations, which potentially enables broad responsiveness. The biological complexity of OVs have hindered their translation; however, the recent approval of talimogene laherparepvec (T-Vec) has invigorated the field.
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Affiliation(s)
- Shunchuan Zhang
- Molecular Neurosurgery Laboratory and the Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Samuel D Rabkin
- Molecular Neurosurgery Laboratory and the Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
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Mozhei O, G. Teschemacher A, Kasparov S. Viral Vectors as Gene Therapy Agents for Treatment of Glioblastoma. Cancers (Basel) 2020; 12:E3724. [PMID: 33322507 PMCID: PMC7764372 DOI: 10.3390/cancers12123724] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/06/2020] [Accepted: 12/07/2020] [Indexed: 01/02/2023] Open
Abstract
In this review, we scrutinize the idea of using viral vectors either as cytotoxic agents or gene delivery tools for treatment of glioblastoma multiforme (GBM) in light of the experience that our laboratory has accumulated over ~20 years when using similar vectors in experimental neuroscience. We review molecular strategies and current clinical trials and argue that approaches which are based on targeting a specific biochemical pathway or a characteristic mutation are inherently prone to failure because of the high genomic instability and clonal selection characteristics of GBM. For the same reasons, attempts to develop a viral system which selectively transduces only GBM cells are also unlikely to be universally successful. One of the common gene therapy approaches is to use cytotoxic viruses which replicate and cause preferential lysis of the GBM cells. This strategy, in addition to its reliance on the specific biochemical makeup of the GBM cells, bears a risk of necrotic cell death accompanied by release of large quantities of pro-inflammatory molecules. On the other hand, engaging the immune system in the anti-GBM response seems to be a potential avenue to explore further. We suggest that a plausible strategy is to focus on viral vectors which efficiently transduce brain cells via a non-selective, ubiquitous mechanism and which target (ideally irreversibly) processes that are critical only for dividing tumor cells and are dispensable for quiescent brain cells.
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Affiliation(s)
- Oleg Mozhei
- School of Life Sciences, Immanuel Kant Baltic Federal University, 236041 Kaliningrad, Russia
| | - Anja G. Teschemacher
- School of Physiology, Neuroscience and Pharmacology, University of Bristol, Bristol BS8 1TD, UK;
| | - Sergey Kasparov
- School of Life Sciences, Immanuel Kant Baltic Federal University, 236041 Kaliningrad, Russia
- School of Physiology, Neuroscience and Pharmacology, University of Bristol, Bristol BS8 1TD, UK;
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25
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Liu P, Wang Y, Wang Y, Kong Z, Chen W, Li J, Chen W, Tong Y, Ma W, Wang Y. Effects of oncolytic viruses and viral vectors on immunity in glioblastoma. Gene Ther 2020; 29:115-126. [PMID: 33191399 DOI: 10.1038/s41434-020-00207-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 09/23/2020] [Accepted: 10/27/2020] [Indexed: 02/06/2023]
Abstract
Glioblastoma (GBM) is regarded as an incurable disease due to its poor prognosis and limited treatment options. Virotherapies were once utilized on cancers for their oncolytic effects. And they are being revived on GBM treatment, as accumulating evidence presents the immunogenic effects of virotherapies in remodeling immunosuppressive GBM microenvironment. In this review, we focus on the immune responses induced by oncolytic virotherapies and viral vectors in GBM. The current developments of GBM virotherapies are briefly summarized, followed by a detailed depiction of their immune response. Limitations and lessons inferred from earlier experiments and trials are discussed. Moreover, we highlight the importance of engaging the immune responses induced by virotherapies into the multidisciplinary management of GBM.
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Affiliation(s)
- Penghao Liu
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Yaning Wang
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Yuekun Wang
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Ziren Kong
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Wanqi Chen
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Jiatong Li
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Wenlin Chen
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Yuanren Tong
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Wenbin Ma
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
| | - Yu Wang
- Departments of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
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26
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Menotti L, Avitabile E. Herpes Simplex Virus Oncolytic Immunovirotherapy: The Blossoming Branch of Multimodal Therapy. Int J Mol Sci 2020; 21:ijms21218310. [PMID: 33167582 PMCID: PMC7664223 DOI: 10.3390/ijms21218310] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 02/06/2023] Open
Abstract
Oncolytic viruses are smart therapeutics against cancer due to their potential to replicate and produce the needed therapeutic dose in the tumor, and to their ability to self-exhaust upon tumor clearance. Oncolytic virotherapy strategies based on the herpes simplex virus are reaching their thirties, and a wide variety of approaches has been envisioned and tested in many different models, and on a range of tumor targets. This huge effort has culminated in the primacy of an oncolytic HSV (oHSV) being the first oncolytic virus to be approved by the FDA and EMA for clinical use, for the treatment of advanced melanoma. The path has just been opened; many more cancer types with poor prognosis await effective and innovative therapies, and oHSVs could provide a promising solution, especially as combination therapies and immunovirotherapies. In this review, we analyze the most recent advances in this field, and try to envision the future ahead of oHSVs.
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27
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Kim KJ, Moon D, Kong SJ, Lee YS, Yoo Y, Kim S, Kim C, Chon HJ, Kim JH, Choi KJ. Antitumor effects of IL-12 and GM-CSF co-expressed in an engineered oncolytic HSV-1. Gene Ther 2020; 28:186-198. [PMID: 33149278 DOI: 10.1038/s41434-020-00205-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 09/16/2020] [Accepted: 10/19/2020] [Indexed: 12/17/2022]
Abstract
Oncolytic viruses selectively replicate and destroy cancer cells while sparing normal cells, prompting their recognition as promising antitumor agents. Herpes simplex virus (HSV) is suitable as an anticancer agent, given its considerable therapeutic gene capacity and excellent safety profile in clinical trials. Interleukin (IL)-12 induces a Th1-type immune response that mediates interferon (IFN)-γ release from natural killer (NK), CD4+ and CD8+ T cells. Granulocyte-macrophage colony-stimulating factor (GM-CSF) induces the generation of antigen-presenting cells and promotes dendritic cell differentiation. We established a novel oncolytic HSV-1 (∆6/GM/IL12) co-expressing IL-12 and GM-CSF and tested its effects against a B16-F10 murine melanoma model. ∆6/GM/IL12 administration diminished tumor growth and prolonged survival compared to treatment with ∆6/GM or ∆6/IL12 expressing each individual cytokine. Flow cytometry and histological analysis showed increased activation of CD4+ and CD8+ T cells in ∆6/GM/IL12-treated mice. Enzyme-linked immunosorbent spot assay showed an increase in the phenotypically characterized IFN-γ-producing cell population in ∆6/GM/IL12-treated mice. Moreover, ∆6/GM/IL12 induced a B16-F10-specific cytotoxic immune response that enhanced IFN-γ production by CD3+CD8+ T cells. Therefore, IL-12 and GM-CSF from an engineered oncolytic HSV have a synergistic effect, boosting the immune response to increase their antitumor effects.
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Affiliation(s)
- Kyoung-Ju Kim
- Laboratory of Gene Therapy, Department of Microbiology, CHA Bundang Medical Center, CHA University, Seongnam, Korea.,Graduate School of the Department of Biomedical Science, CHA University, Seongnam, Korea
| | - Dahye Moon
- Laboratory of Gene Therapy, Department of Microbiology, CHA Bundang Medical Center, CHA University, Seongnam, Korea.,Graduate School of the Department of Biomedical Science, CHA University, Seongnam, Korea
| | - So Jung Kong
- Laboratory of Translational Immuno-Oncology, CHA University, Seongnam, Korea.,Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Yu Seong Lee
- Graduate School of the Department of Biomedical Science, CHA University, Seongnam, Korea.,Laboratory of Translational Immuno-Oncology, CHA University, Seongnam, Korea
| | - Youngeun Yoo
- Laboratory of Gene Therapy, Department of Microbiology, CHA Bundang Medical Center, CHA University, Seongnam, Korea.,Graduate School of the Department of Biomedical Science, CHA University, Seongnam, Korea
| | - Soyoung Kim
- Laboratory of Gene Therapy, Department of Microbiology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Chan Kim
- Laboratory of Translational Immuno-Oncology, CHA University, Seongnam, Korea.,Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Hong Jae Chon
- Laboratory of Translational Immuno-Oncology, CHA University, Seongnam, Korea.,Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Joo-Hang Kim
- Laboratory of Gene Therapy, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
| | - Kyung-Ju Choi
- Laboratory of Gene Therapy, Department of Microbiology, CHA Bundang Medical Center, CHA University, Seongnam, Korea. .,Graduate School of the Department of Biomedical Science, CHA University, Seongnam, Korea.
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28
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Liu S, Zhang J, Fang S, Su X, Zhang Q, Zhu G, Zhu L, Zhao M, Liu F. Antitumor efficacy of oncolytic HSV-1 expressing cytosine deaminase is synergistically enhanced by DPD down-regulation and EMT inhibition in uveal melanoma xenograft. Cancer Lett 2020; 495:123-134. [PMID: 32946963 DOI: 10.1016/j.canlet.2020.09.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/30/2020] [Accepted: 09/10/2020] [Indexed: 01/04/2023]
Abstract
Uveal melanoma (UM) is the most common intraocular tumor in adults and has a high incidence of metastases. Possible treatments remain limited in UM with enucleation and radiation, leading to poor prognosis in this chemo-resistant carcinoma. Thus, urging demand for novel treatment is needed. We examined the antitumor efficacy of a new recombinant oncolytic herpes simplex virus type 1 (oHSV-1) armed with E.coli cytosine deaminase (CD). We determined the efficacy of the oncolytic virus in UM cell lines. In vivo experiments showed that oHSV-CD/5-fluorocytosine (5-FC) treatment reduce tumor volume and prolonged survival. We further demonstrated the molecular mechanisms of oHSV-CD/5-FC treatment. The oncolytic virus down-regulated IL-6 expression and thereby reversed the epithelial-mesenchymal transition (EMT) phenotype. Dihydropyrimidine dehydrogenase (DPD), the rate-limiting enzyme in 5-fluorouracil (5-FU) metabolism, was also down-regulated. Therefore, the efficacy of oHSV-CD/5-FC was synergistically enhanced by DPD down-regulation and EMT inhibition. This study provides solid evidence for the antitumor efficacy of oHSV-CD/5-FC treatment in vitro and in vivo. The molecular mechanisms of this treatment may bring a new therapeutic approach for future treatment of UM.
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Affiliation(s)
- Sisi Liu
- Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China
| | - Junwen Zhang
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China
| | - Sheng Fang
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China
| | - Xiaodong Su
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China
| | - Qing Zhang
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China
| | - Guidong Zhu
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China
| | - Li Zhu
- Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China
| | - Mingwei Zhao
- Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China.
| | - Fusheng Liu
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing, China.
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29
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Hager S, Fittler FJ, Wagner E, Bros M. Nucleic Acid-Based Approaches for Tumor Therapy. Cells 2020; 9:E2061. [PMID: 32917034 PMCID: PMC7564019 DOI: 10.3390/cells9092061] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/06/2020] [Accepted: 09/07/2020] [Indexed: 12/24/2022] Open
Abstract
Within the last decade, the introduction of checkpoint inhibitors proposed to boost the patients' anti-tumor immune response has proven the efficacy of immunotherapeutic approaches for tumor therapy. Furthermore, especially in the context of the development of biocompatible, cell type targeting nano-carriers, nucleic acid-based drugs aimed to initiate and to enhance anti-tumor responses have come of age. This review intends to provide a comprehensive overview of the current state of the therapeutic use of nucleic acids for cancer treatment on various levels, comprising (i) mRNA and DNA-based vaccines to be expressed by antigen presenting cells evoking sustained anti-tumor T cell responses, (ii) molecular adjuvants, (iii) strategies to inhibit/reprogram tumor-induced regulatory immune cells e.g., by RNA interference (RNAi), (iv) genetically tailored T cells and natural killer cells to directly recognize tumor antigens, and (v) killing of tumor cells, and reprograming of constituents of the tumor microenvironment by gene transfer and RNAi. Aside from further improvements of individual nucleic acid-based drugs, the major perspective for successful cancer therapy will be combination treatments employing conventional regimens as well as immunotherapeutics like checkpoint inhibitors and nucleic acid-based drugs, each acting on several levels to adequately counter-act tumor immune evasion.
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Affiliation(s)
- Simone Hager
- Department of Chemistry and Pharmacy, Ludwig-Maximilians-University (LMU), 81377 Munich, Germany;
| | | | - Ernst Wagner
- Department of Chemistry and Pharmacy, Ludwig-Maximilians-University (LMU), 81377 Munich, Germany;
| | - Matthias Bros
- Department of Dermatology, University Medical Center, 55131 Mainz, Germany;
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30
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Gilchrist VH, Jémus-Gonzalez E, Said A, Alain T. Kinase inhibitors with viral oncolysis: Unmasking pharmacoviral approaches for cancer therapy. Cytokine Growth Factor Rev 2020; 56:83-93. [PMID: 32690442 DOI: 10.1016/j.cytogfr.2020.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 07/02/2020] [Indexed: 12/28/2022]
Abstract
There are more than 500 kinases in the human genome, many of which are oncogenic once constitutively activated. Fortunately, numerous hyperactive kinases are druggable, and several targeted small molecule kinase inhibitors have demonstrated impressive clinical benefits in cancer treatment. However, their often cytostatic rather than cytotoxic effect on cancer cells, and the development of resistance mechanisms, remain significant limitations to these targeted therapies. Oncolytic viruses are an emerging class of immunotherapeutic agents with a specific oncotropic nature and excellent safety profile, highlighting them as a promising alternative to conventional therapeutic modalities. Nonetheless, the clinical efficacy of oncolytic virotherapy is challenged by immunological and physical barriers that limit viral delivery, replication, and spread within tumours. Several of these barriers are often associated with oncogenic kinase activity and, in some cases, worsened by the action of oncolytic viruses on kinase signaling during infection. What if inhibiting these kinases could potentiate the cancer-lytic and anti-tumour immune stimulating properties of oncolytic virotherapies? This could represent a paradigm shift in the use of specific kinase inhibitors in the clinic and provide a novel therapeutic approach to the treatment of cancers. A phase III clinical trial combining the oncolytic Vaccinia virus Pexa-Vec with the kinase inhibitor Sorafenib was initiated. While this trial failed to show any benefits over Sorafenib monotherapy in patients with advanced liver cancer, several pre-clinical studies demonstrate that targeting kinases combined with oncolytic viruses have synergistic effects highlighting this strategy as a unique avenue to cancer therapy. Herein, we review the combinations of oncolytic viruses with kinase inhibitors reported in the literature and discuss the clinical opportunities that represent these pharmacoviral approaches.
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Affiliation(s)
- Victoria Heather Gilchrist
- Children's Hospital of Eastern Ontario Research Institute, Apoptosis Research Center, Ottawa, ON, Canada; Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada.
| | - Estephanie Jémus-Gonzalez
- Children's Hospital of Eastern Ontario Research Institute, Apoptosis Research Center, Ottawa, ON, Canada
| | - Aida Said
- Children's Hospital of Eastern Ontario Research Institute, Apoptosis Research Center, Ottawa, ON, Canada; Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada
| | - Tommy Alain
- Children's Hospital of Eastern Ontario Research Institute, Apoptosis Research Center, Ottawa, ON, Canada; Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada.
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31
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Lathwal A, Kumar R, Raghava GP. Computer-aided designing of oncolytic viruses for overcoming translational challenges of cancer immunotherapy. Drug Discov Today 2020; 25:1198-1205. [DOI: 10.1016/j.drudis.2020.04.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/05/2020] [Accepted: 04/15/2020] [Indexed: 12/26/2022]
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32
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Zhang Y, Liu Z. Oncolytic Virotherapy for Malignant Tumor: Current Clinical Status. Curr Pharm Des 2020; 25:4251-4263. [PMID: 31682207 DOI: 10.2174/1381612825666191104090544] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 10/29/2019] [Indexed: 12/12/2022]
Abstract
Oncolytic viruses, as novel biological anti-tumor agents, provide anti-tumor therapeutic effects by different mechanisms including directly selective tumor cell lysis and secondary systemic anti-tumor immune responses. Some wide-type and genetically engineered oncolytic viruses have been applied in clinical trials. Among them, T-Vec has a significant therapeutic effect on melanoma patients and received the approval of the US Food and Drug Administration (FDA) as the first oncolytic virus to treat cancer in the US. However, the mechanisms of virus interaction with tumor and immune systems have not been clearly elucidated and there are still no "gold standards" for instructions of virotherapy in clinical trials. This Review collected the recent clinical trials data from 2005 to summarize the basic oncolytic viruses biology, describe the application in recent clinical trials, and discuss the challenges in the application of oncolytic viruses in clinical trials.
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Affiliation(s)
- Yuhui Zhang
- Department of Spine Surgery, Renji Hospital, Medical School, Shanghai Jiaotong University, Shanghai, China
| | - Zhuoming Liu
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, United States
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33
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Ghouse SM, Nguyen HM, Bommareddy PK, Guz-Montgomery K, Saha D. Oncolytic Herpes Simplex Virus Encoding IL12 Controls Triple-Negative Breast Cancer Growth and Metastasis. Front Oncol 2020; 10:384. [PMID: 32266155 PMCID: PMC7105799 DOI: 10.3389/fonc.2020.00384] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 03/04/2020] [Indexed: 12/20/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is a difficult-to-treat disease with high rates of local recurrence, distant metastasis, and poor overall survival with existing therapies. Thus, there is an unmet medical need to develop new treatment regimen(s) for TNBC patients. An oncolytic herpes simplex virus encoding a master anti-tumor cytokine, interleukin 12, (designated G47Δ-mIL12) selectively kills cancer cells while inducing anti-tumor immunity. G47Δ-mIL12 efficiently infected and killed murine (4T1 and EMT6) and human (HCC1806 and MDA-MB-468) mammary tumor cells in vitro. In vivo in the 4T1 syngeneic TNBC model, it significantly reduced primary tumor burden and metastasis, both at early and late stages of tumor development. The virus-induced local and abscopal effects were confirmed by significantly increased infiltration of CD45+ leukocytes and CD8+ T cells, and reduction of granulocytic and monocytic MDSCs in tumors, both treated and untreated contralateral, and in the spleen. Significant trafficking of dendritic cells (DCs) were only observed in spleens of virus-treatment group, indicating that DCs are primed and activated in the tumor-microenvironment following virotherapy, and trafficked to lymphoid organs for activation of immune cells, such as CD8+ T cells. DC priming/activation could be associated with virally enhanced expression of several antigen processing/presentation genes in the tumor microenvironment, as confirmed by NanoString gene expression analysis. Besides DC activation/priming, G47Δ-mIL12 treatment led to up-regulation of CD8+ T cell activation markers in the tumor microenvironment and inhibition of tumor angiogenesis. The anti-tumor effects of G47Δ-mIL12 treatment were CD8-dependent. These studies illustrate the ability of G47Δ-mIL12 to immunotherapeutically treat TNBC.
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Affiliation(s)
- Shanawaz M Ghouse
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, United States
| | - Hong-My Nguyen
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, United States
| | - Praveen K Bommareddy
- School of Graduate Studies, Rutgers University, New Brunswick, NJ, United States
| | - Kirsten Guz-Montgomery
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, United States
| | - Dipongkor Saha
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, United States
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34
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Li Y, Shen Y, Zhao R, Samudio I, Jia W, Bai X, Liang T. Oncolytic virotherapy in hepato-bilio-pancreatic cancer: The key to breaking the log jam? Cancer Med 2020; 9:2943-2959. [PMID: 32130786 PMCID: PMC7196045 DOI: 10.1002/cam4.2949] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 02/07/2023] Open
Abstract
Traditional therapies have limited efficacy in hepatocellular carcinoma, pancreatic cancer, and biliary tract cancer, especially for advanced and refractory cancers. Through a deeper understanding of antitumor immunity and the tumor microenvironment, novel immunotherapies are becoming available for cancer treatment. Oncolytic virus (OV) therapy is an emerging type of immunotherapy that has demonstrated effective antitumor efficacy in many preclinical studies and clinical studies. Thus, it may represent a potential feasible treatment for hard to treat gastrointestinal (GI) tumors. Here, we summarize the research progress of OV therapy for the treatment of hepato-bilio-pancreatic cancers. In general, most OV therapies exhibits potent, specific oncolysis both in cell lines in vitro and the animal models in vivo. Currently, several clinical trials have suggested that OV therapy may also be effective in patients with refractory hepato-bilio-pancreatic cancer. Multiple strategies such as introducing immunostimulatory genes, modifying virus capsid and combining various other therapeutic modalities have been shown enhanced specific oncolysis and synergistic anti-cancer immune stimulation. Combining OV with other antitumor therapies may become a more effective strategy than using virus alone. Nevertheless, more studies are needed to better understand the mechanisms underlying the therapeutic effects of OV, and to design appropriate dosing and combination strategies.
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Affiliation(s)
- Yuwei Li
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou, China.,Innovation Center for the study of Pancreatic Diseases, Hangzhou, China
| | - Yinan Shen
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou, China.,Innovation Center for the study of Pancreatic Diseases, Hangzhou, China
| | | | | | - William Jia
- Virogin Biotech Canada Ltd, Vancouver, Canada
| | - Xueli Bai
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou, China.,Innovation Center for the study of Pancreatic Diseases, Hangzhou, China
| | - Tingbo Liang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou, China.,Innovation Center for the study of Pancreatic Diseases, Hangzhou, China
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35
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Oncolytic Virus Encoding a Master Pro-Inflammatory Cytokine Interleukin 12 in Cancer Immunotherapy. Cells 2020; 9:cells9020400. [PMID: 32050597 PMCID: PMC7072539 DOI: 10.3390/cells9020400] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 01/25/2020] [Accepted: 01/29/2020] [Indexed: 02/07/2023] Open
Abstract
Oncolytic viruses (OVs) are genetically modified or naturally occurring viruses, which preferentially replicate in and kill cancer cells while sparing healthy cells, and induce anti-tumor immunity. OV-induced tumor immunity can be enhanced through viral expression of anti-tumor cytokines such as interleukin 12 (IL-12). IL-12 is a potent anti-cancer agent that promotes T-helper 1 (Th1) differentiation, facilitates T-cell-mediated killing of cancer cells, and inhibits tumor angiogenesis. Despite success in preclinical models, systemic IL-12 therapy is associated with significant toxicity in humans. Therefore, to utilize the therapeutic potential of IL-12 in OV-based cancer therapy, 25 different IL-12 expressing OVs (OV-IL12s) have been genetically engineered for local IL-12 production and tested preclinically in various cancer models. Among OV-IL12s, oncolytic herpes simplex virus encoding IL-12 (OHSV-IL12) is the furthest along in the clinic. IL-12 expression locally in the tumors avoids systemic toxicity while inducing an efficient anti-tumor immunity and synergizes with anti-angiogenic drugs or immunomodulators without compromising safety. Despite the rapidly rising interest, there are no current reviews on OV-IL12s that exploit their potential efficacy and safety to translate into human subjects. In this article, we will discuss safety, tumor-specificity, and anti-tumor immune/anti-angiogenic effects of OHSV-IL12 as mono- and combination-therapies. In addition to OHSV-IL12 viruses, we will also review other IL-12-expressing OVs and their application in cancer therapy.
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Efficacy of a third-generation oncolytic herpes simplex virus in neuroendocrine tumor xenograft models. Oncotarget 2019; 10:7132-7141. [PMID: 31903171 PMCID: PMC6935252 DOI: 10.18632/oncotarget.27391] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 12/02/2019] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND: Few chemotherapies are available for neuroendocrine tumors, especially for highly malignant neuroendocrine cancers. The third-generation oncolytic herpes simplex virus type 1 (HSV-1) T-01 selectively replicates in tumor cells and shows cytotoxicity against tumor cells without damaging surrounding normal tissues. We examined the antitumor effect of T-01 to explore novel treatments for patients with neuroendocrine tumors. METHODS: The cytotoxicity of T-01 was tested in two human and one murine neuroendocrine tumor cell lines in vitro. Mouse models with subcutaneously implanted human neuroendocrine tumor QGP1 cells were used to investigate T-01 efficacy in vivo. RESULTS: T-01 showed cytotoxicity against the three cell lines in vitro. In xenograft models, the growth of tumors derived from QGP1 cells was inhibited by T-01 compared with control group. Although weight loss of mice was observed with tumor growth in the control group, it was suppressed by T-01 administration. The antitumor effects of T-01 were dependent on virus concentration and frequency of administration. CONCLUSIONS: T-01 effectively inhibits tumor cell proliferation in a poorly differentiated NEC mouse model. These results suggest that the third-generation oncolytic HSV-1 may serve as a novel treatment for patients with neuroendocrine tumors.
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Generation and validation of recombinant herpes simplex type 1 viruses (HSV-1) using CRISPR/Cas9 genetic disruption. Methods Enzymol 2019; 635:167-184. [PMID: 32122544 DOI: 10.1016/bs.mie.2019.08.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Herpes simplex virus type 1 (HSV-1) is a large DNA virus that has been popular for oncolytic virus development in pre-clinical research and clinical trials. An oncolytic HSV-1 encoding granulocyte-macrophage colony stimulating factor (GM-CSF), designated talimogene laherparepvec (T-VEC) was approved for the treatment of patients with advanced melanoma in 2015. There are numerous advantages of HSV-1 for oncolytic development, including the ease of recombinant engineering, presence of non-essential genes allowing attenuation of pathogenicity and space for foreign transgene expression. In addition, most recombinants retain sensitivity to acyclovir providing an additional safety feature. In this chapter, we will focus on the key methods for the development of oncolytic HSV-1 vectors and some of the commonly utilized laboratory protocols used to characterize and assess the structure and oncolytic activity of recombinant HSV-1 viruses.
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Youssef GC, Gomez-Manzano C, Sawaya R, Fueyo J. Antitumor immune response during glioma virotherapy. Neuro Oncol 2019; 21:1087-1088. [PMID: 31348516 DOI: 10.1093/neuonc/noz114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Gilbert C Youssef
- Department of Neuro-Oncology, Brain Tumor Program, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Candelaria Gomez-Manzano
- Department of Neuro-Oncology, Brain Tumor Program, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Raymond Sawaya
- Department of Neurosurgery, Brain Tumor Program, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Juan Fueyo
- Department of Neuro-Oncology, Brain Tumor Program, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Neurosurgery, Brain Tumor Program, The University of Texas MD Anderson Cancer Center, Houston, Texas
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Saha D, Martuza RL, Rabkin SD. Oncolytic herpes simplex virus immunovirotherapy in combination with immune checkpoint blockade to treat glioblastoma. Immunotherapy 2019; 10:779-786. [PMID: 30008259 DOI: 10.2217/imt-2018-0009] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Oncolytic viruses, such as oncolytic herpes simplex virus (oHSV), are a new class of cancer therapeutic, which selectively replicate and kill cancer cells, while inducing an inflammatory microenvironment, immunovirotherapy. Recently, an oHSV (talimogene laherparepvec) has been approved for the treatment of advanced melanoma. Glioblastoma (GBM) is an almost always lethal primary tumor in the brain that is highly immunosuppressive, and posited to contain GBM stem-like cells (GSCs). Immune checkpoint blockade has revolutionized therapy for some cancers, but not GBM. We have used a syngeneic GSC-derived orthotopic GBM model (005) to develop immunotherapeutic strategies. Curative therapy required oHSV expressing IL-12 in combination with two checkpoint inhibitors, anti-PD-1 and anti-CTLA-4. This response required CD4+ and CD8+ T cells, and macrophages in a complex interplay.
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Affiliation(s)
- Dipongkor Saha
- Department of Neurosurgery, Molecular Neurosurgery Laboratory & Brain Tumor Research Center, Massachusetts General Hospital & Harvard Medical School, Boston, MA 02114, USA
| | - Robert L Martuza
- Department of Neurosurgery, Molecular Neurosurgery Laboratory & Brain Tumor Research Center, Massachusetts General Hospital & Harvard Medical School, Boston, MA 02114, USA
| | - Samuel D Rabkin
- Department of Neurosurgery, Molecular Neurosurgery Laboratory & Brain Tumor Research Center, Massachusetts General Hospital & Harvard Medical School, Boston, MA 02114, USA
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Su P, Wang H, Xia J, Zhong X, Hu L, Li Y, Li Y, Ying M, Xu F. Evaluation of retrograde labeling profiles of HSV1 H129 anterograde tracer. J Chem Neuroanat 2019; 100:101662. [PMID: 31348990 DOI: 10.1016/j.jchemneu.2019.101662] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 07/09/2019] [Accepted: 07/22/2019] [Indexed: 01/02/2023]
Abstract
Herpes simplex virus type 1 H129 strain has been widely used as a useful anterograde neuronal circuit tracing tool. However, whether H129 is a rigorous anterograde tracer and undergoes anterograde-only spreading are questions of significant interest. In the present study, we evaluated the retrograde labeling efficiency of H129 using a TK and ICP34.5 dual deleted H129 recombinant (named as H306) which was replication-deficient in non-dividing postmitotic neurons. The novel tracer was tested in vitro and in vivo for evaluating its invasion properties and tracing capacities. The results demonstrated that H306 could efficiently label the neurons following intracerebral injection. Notably, H306 could also efficiently infect upstream innervating neurons through axon terminal uptake and displayed obvious retrograde labeling phenotype, regardless of 3 days or 10 days of tracing. The data implied that replication-competent, trans-multisynaptic H129 tracing results might be a mixed neural networks from two types of starter cells, because the retrogradely infected neurons would also replicate H129 and spread virus anterogradely through their axon collaterals (ectopic starter sites), as the local infected neurons in the injection site (true starter site). Therefore, the interpretation of the anterogradely tracing neural networks by current H129 tools at longer post-inoculation intervals need to be cautious, and effective modification strategies are needed to avoid or block the axon terminal invasion process of H129, which is important for rigorous anterograde H129 tracer.
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Affiliation(s)
- Peng Su
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China; Center for Brain Science, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Huadong Wang
- Center for Brain Science, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China.
| | - Jinjin Xia
- Center for Brain Science, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Xin Zhong
- Center for Brain Science, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Liang Hu
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yingli Li
- Center for Brain Science, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Yanqiu Li
- Center for Brain Science, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Min Ying
- Center for Brain Science, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Fuqiang Xu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China; Center for Brain Science, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China; Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.
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Abdoli S, Roohvand F, Teimoori-Toolabi L, Shayan S, Shokrgozar MA. Cytotoxic effect of dual fluorescent-labeled oncolytic herpes simplex virus type 1 on mouse tumorigenic cell lines. Res Pharm Sci 2019; 14:27-35. [PMID: 30936930 PMCID: PMC6407334 DOI: 10.4103/1735-5362.251850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The increasing incidences of cancer at the global scale have recently resulted in the invention of various biotechnology approaches among which the oncolytic virotherapy is a new strategy for the treatment of multiple tumors. Herpes simplex virus (HSV) based vectors are one of the most studied oncolytic agents, worldwide. Moreover, syngeneic animal models are the principal parts of the oncolytic virotherapies investigation. The effects of a dual fluorescent γ34.5 deleted vector-HSV-GR- on three mouse tumor cell lines were studied in this work. We previously generated a dual fluorescent labeled oncolytic HSV-HSV-GR- (both copies of γ34.5 were inactivated by insertion of two distinct fluorescent dyes, GFP and mCherry) in our laboratory; subsequently, they were used as oncolytic viruses. The three 4T1, TC-1, and CT26 cell lines were infected with HSV-GR. The infection efficacy and the elimination potency of HSV-GR were analyzed by photomicrography and flow cytometry methods. HSV-GR showed a significant efficiency to infect the cell lines examined. Flow cytometry analyses demonstrated that HSV-GR infected 89.3%, 86.1%, and 92.4% of 4T1, TC-1, and CT26 cells, respectively. Moreover, propidium iodide (PI) staining of infected cells indicated that HSV-GR could kill 27.9%, 21.2%, and 21.3% of 4T1, TC-1, and CT26 cells, respectively. Interestingly, HSV-GR infected cells were capable of expressing both GFP and mCherry at the same time. The promising effects of the oncolytic virus HSV-GR in the mouse syngeneic tumor cell system have shed more light on the therapeutic potential of this anti-cancer approach.
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Affiliation(s)
- Shahriyar Abdoli
- Department of Virology, Pasteur Institute of Iran, Tehran, I.R. Iran
| | - Farzin Roohvand
- Department of Virology, Pasteur Institute of Iran, Tehran, I.R. Iran
| | - Ladan Teimoori-Toolabi
- Molecular Medicine Department, Biotechnology Research center, Pasteur Institute of Iran, Tehran, I.R. Iran
| | - Sara Shayan
- Department of Virology, Pasteur Institute of Iran, Tehran, I.R. Iran
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Peters C, Grandi P, Nigim F. Updates on Oncolytic Virus Immunotherapy for Cancers. MOLECULAR THERAPY-ONCOLYTICS 2019; 12:259-262. [PMID: 33072862 DOI: 10.1016/j.omto.2019.01.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The 2018 annual Cambridge Healthtech Institute's International Immuno-Oncology Summit in Boston, MA convened late August, and academic and industry researchers were allowed to debate and discuss oncolytic virology during the virus immunotherapy portion of the conference. The breakthrough agent, TVEC/IMLYGIC, as well as most other oncolytic viruses (OVs) in clinical trials, are demonstrating an immense synergy with T cell checkpoint inhibitors. To this extent, the marriage of T cell checkpoint inhibitors and OV is now vastly accepted, indicating the next phase in OVs is the recruitment of the immune system, and tailoring the immune response toward tumor clearance is a far better strategy than directly lysing the tumor outright with virus. The next field-shaping question for OVs is how to convert a patient's immune response against their tumor. The talks this year focused on whether OVs can cause the emergence of a strong anti-tumor immunity intrinsically or whether vectors, which educate the immune system to detect tumor antigens, were more efficacious. Speakers presented novel transgenes to arm OVs and systems biology approaches to discover the best viral backbones to engineer into vectors. Here we summarize the meeting's keynote talks, thematic principles running through the summit, and current developments in the OV field.
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Affiliation(s)
- Cole Peters
- Brain Tumor Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Paola Grandi
- University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Fares Nigim
- Brain Tumor Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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Selective Editing of Herpes Simplex Virus 1 Enables Interferon Induction and Viral Replication That Destroy Malignant Cells. J Virol 2019; 93:JVI.01761-18. [PMID: 30404809 DOI: 10.1128/jvi.01761-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 10/28/2018] [Indexed: 12/17/2022] Open
Abstract
Oncolytic herpes simplex virus 1 (HSV-1), devoid of the γ134.5 gene, exerts antitumor activities. However, the oncolytic effects differ, ranging from pronounced to little responses. Although viral and host factors are involved, much remains to be deciphered. Here we report that engineered HSV-1 ΔN146, bearing amino acids 147 to 263 of γ134.5, replicates competently in and lyses malignant cells refractory to the γ134.5 null mutant. Upon infection, ΔN146 precludes phosphorylation of translation initiation factor eIF2α (α subunit of eukaryotic initiation factor 2), ensuring viral protein synthesis. On the other hand, ΔN146 activates interferon (IFN) regulatory factor 3 (IRF3) and IFN expression, known to prime immunity against virus and tumor. Nevertheless, ΔN146 exhibits sustained replication even exposed to exogenous IFN-α. In a 4T1 tumor model, ΔN146 markedly reduces tumor growth and metastasis formation. This coincides with viral replication or T cell infiltration in primary tumors. ΔN146 is undetectable in normal tissues in vivo Targeted HSV-1 editing results in a unique antineoplastic agent that enables inflammation without major interference of viral growth within tumor cells.IMPORTANCE Oncolytic herpes simplex virus 1 is a promising agent for cancer immunotherapy. Due to a complex virus-host interaction, less is clear about what viral signature(s) constitutes a potent oncolytic backbone. Through molecular or genetic dissection, we showed that selective editing of the γ134.5 gene enables viral replication in malignant cells, activation of transcription factor IRF3, and subsequent induction of type I IFN. This translates into profoundly reduced primary tumor growth and metastasis burden in an aggressive breast carcinoma model in vivo Our work reveals a distinct oncolytic platform that is amendable for further development.
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Kahramanian A, Kuroda T, Wakimoto H. Construction of Oncolytic Herpes Simplex Virus with Therapeutic Genes of Interest. Methods Mol Biol 2019; 1937:177-188. [PMID: 30706396 DOI: 10.1007/978-1-4939-9065-8_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Herpes simplex virus (HSV) is one of the most extensively studied oncolytic virus platforms. The recent FDA approval of talimogene laherparepvec (T-VEC) has been accelerating translational research of oncolytic HSV (oHSV) as a promising therapeutic for refractory cancers such as glioblastoma, the deadliest primary malignancy in the brain. The large genome size of HSV readily allows arming of oHSV by incorporating therapeutic transgenes within the virus, as exemplified by T-VEC carrying GM-CSF, thereby enhancing the anticancer activity of oHSV. Here we describe a bacterial artificial chromosome-based method for construction of an oHSV expressing a transgene, which we routinely use in the laboratory to create a number of different recombinant oHSV bearing either therapeutic or reporter genes.
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Affiliation(s)
- Andranik Kahramanian
- Department of Neurosurgery, Brain Tumor Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Toshihiko Kuroda
- Department of Neurosurgery, Brain Tumor Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Hiroaki Wakimoto
- Department of Neurosurgery, Brain Tumor Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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45
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Ma W, He H, Wang H. Oncolytic herpes simplex virus and immunotherapy. BMC Immunol 2018; 19:40. [PMID: 30563466 PMCID: PMC6299639 DOI: 10.1186/s12865-018-0281-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 12/06/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Oncolytic viruses have been proposed to be employed as a potential treatment of cancer. Well targeted, they will serve the purpose of cracking tumor cells without causing damage to normal cells. In this category of oncolytic viral drugs human pathogens herpes simplex virus (HSV) is especially suitable for the cause. Although most viral infection causes antiviral reaction in the host, HSV has multiple mechanisms to evade those responses. Powerful anti-tumor effect can thus be achieved via genetic manipulation of the HSV genes involved in this evading mechanism, namely deletions or mutations that adapt its function towards a tumor microenvironment. Currently, oncolytic HSV (oHSV) is widely use in clinical; moreover, there's hope that its curative effect will be further enhanced through the combination of oHSV with both traditional and emerging therapeutics. RESULTS In this review, we provide a summary of the HSV host antiviral response evasion mechanism, HSV expresses immune evasion genes such as ICP34.5, ICP0, Us3, which are involved in inducing and activating host responses, so that the virus can evade the immune system and establish effective long-term latent infection; we outlined details of the oHSV strains generated by removing genes critical to viral replication such as ICP34.5, ICP0, and inserting therapeutic genes such as LacZ, granulocyte macrophage colony-stimulating factor (GM-CSF); security and limitation of some oHSV such G207, 1716, OncoVEX, NV1020, HF10, G47 in clinical application; and the achievements of oHSV combined with immunotherapy and chemotherapy. CONCLUSION We reviewed the immunotherapy mechanism of the oHSV and provided a series of cases. We also pointed out that an in-depth study of the application of oHSV in cancer treatment will potentially benefits cancer patients more.
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Affiliation(s)
- Wenqing Ma
- Ruminant Diseases Research Center, Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Hongbin He
- Ruminant Diseases Research Center, Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250014, China.
| | - Hongmei Wang
- Ruminant Diseases Research Center, Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, 250014, China.
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SOCS4 expressed by recombinant HSV protects against cytokine storm in a mouse model. Oncol Rep 2018; 41:1509-1520. [PMID: 30569160 PMCID: PMC6365695 DOI: 10.3892/or.2018.6935] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/30/2018] [Indexed: 12/26/2022] Open
Abstract
Oncolytic viruses are genetically engineered viruses designed for the treatment of solid tumors, and are often coupled with the antitumor immunity of the host. The challenge of using oncolytic herpes simplex virus (oHSV) as an efficacious oncolytic agent is the potential host tissue damage caused by the production of a range of cytokines following intratumoral oHSV injection. An HSV-suppressor of cytokine signaling 4 (SOCS4) recombinant virus was created to investigate whether it inhibits cytokine storm. Recombinant HSV-SOCS4 and HSV-1(F) were used to infect mice, and levels of several representative cytokines, including monocyte chemoattractant protein-1, interleukin (IL)-1β, tumor necrosis factor-α, IL-6 and interferon γ, in serum and bronchoalveolar lavage fluid (BALF) of infected mice were determined, and immune cells in BALF and spleen were enumerated. Lung damage, virus titers in the lung, body weight and survival rates of infected mice were also determined and compared between the two groups. The cytokine concentration of HSV-SOCS4-infected mice was significantly decreased compared with that of HSV-1(F)-infected mice in BALF and serum, and a smaller number of cluster of differentiation (CD)11b+ cells of BALF, and CD8+CD62L+ T cells and CD4+CD62L+ T cells of the spleen were also identified in HSV-SOCS4-infected mice. HSV-SOCS4-infected mice exhibited slight lung damage, a decrease in body weight loss and a 100% survival rate. The results of the present study indicated that SOCS4 protein may be a useful regulator to inhibit cytokine overproduction, and that HSV-SOCS4 may provide a possible solution to control cytokine storm and its consequences following induction by oncolytic virus treatment.
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Ebrahimi S, Teimoori A, Khanbabaei H, Tabasi M. Harnessing CRISPR/Cas 9 System for manipulation of DNA virus genome. Rev Med Virol 2018; 29:e2009. [PMID: 30260068 DOI: 10.1002/rmv.2009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 08/03/2018] [Accepted: 08/07/2018] [Indexed: 12/17/2022]
Abstract
The recent development of the Clustered Regularly Interspaced Palindromic Repeat (CRISPR)/CRISPR-associated protein 9 (Cas9) system, a genome editing system, has many potential applications in virology. The possibility of introducing site specific breaks has provided new possibilities to precisely manipulate viral genomics. Here, we provide diagrams to summarize the steps involved in the process. We also systematically review recent applications of the CRISPR/Cas9 system for manipulation of DNA virus genomics and discuss the therapeutic potential of the system to treat viral diseases.
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Affiliation(s)
- Saeedeh Ebrahimi
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Virology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ali Teimoori
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Virology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hashem Khanbabaei
- Medical Physics Department, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Maryam Tabasi
- Department of Virology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Peters C, Paget M, Tshilenge KT, Saha D, Antoszczyk S, Baars A, Frost T, Martuza RL, Wakimoto H, Rabkin SD. Restriction of Replication of Oncolytic Herpes Simplex Virus with a Deletion of γ34.5 in Glioblastoma Stem-Like Cells. J Virol 2018; 92:e00246-18. [PMID: 29793956 PMCID: PMC6052301 DOI: 10.1128/jvi.00246-18] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/15/2018] [Indexed: 12/12/2022] Open
Abstract
Oncolytic viruses, including herpes simplex viruses (HSVs), are a new class of cancer therapeutic engineered to infect and kill cancer cells while sparing normal tissue. To ensure that oncolytic HSV (oHSV) is safe in the brain, all oHSVs in clinical trial for glioma lack the γ34.5 genes responsible for neurovirulence. However, loss of γ34.5 attenuates growth in cancer cells. Glioblastoma (GBM) is a lethal brain tumor that is heterogeneous and contains a subpopulation of cancer stem cells, termed GBM stem-like cells (GSCs), that likely promote tumor progression and recurrence. GSCs and matched serum-cultured GBM cells (ScGCs), representative of bulk or differentiated tumor cells, were isolated from the same patient tumor specimens. ScGCs are permissive to replication and cell killing by oHSV with deletion of the γ34.5 genes (γ34.5- oHSV), while patient-matched GSCs were not, implying an underlying biological difference between stem and bulk cancer cells. GSCs specifically restrict the synthesis of HSV-1 true late (TL) proteins, without affecting viral DNA replication or transcription of TL genes. A global shutoff of cellular protein synthesis also occurs late after γ34.5- oHSV infection of GSCs but does not affect the synthesis of early and leaky late viral proteins. Levels of phosphorylated eIF2α and eIF4E do not correlate with cell permissivity. Expression of Us11 in GSCs rescues replication of γ34.5- oHSV. The difference in degrees of permissivity between GSCs and ScGCs to γ34.5- oHSV illustrates a selective translational regulatory pathway in GSCs that may be operative in other stem-like cells and has implications for creating oHSVs.IMPORTANCE Herpes simplex virus (HSV) can be genetically engineered to endow cancer-selective replication and oncolytic activity. γ34.5, a key neurovirulence gene, has been deleted in all oncolytic HSVs in clinical trial for glioma. Glioblastoma stem-like cells (GSCs) are a subpopulation of tumor cells thought to drive tumor heterogeneity and therapeutic resistance. GSCs are nonpermissive for γ34.5- HSV, while non-stem-like cancer cells from the same patient tumors are permissive. GSCs restrict true late protein synthesis, despite normal viral DNA replication and transcription of all kinetic classes. This is specific for true late translation as early and leaky late transcripts are translated late in infection, notwithstanding shutoff of cellular protein synthesis. Expression of Us11 in GSCs rescues the replication of γ34.5- HSV. We have identified a cell type-specific innate response to HSV-1 that limits oncolytic activity in glioblastoma.
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Affiliation(s)
- Cole Peters
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
- Program in Virology, Harvard Medical School, Boston, Massachusetts, USA
| | - Max Paget
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
- Program in Virology, Harvard Medical School, Boston, Massachusetts, USA
| | - Kizito-Tshitoko Tshilenge
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Dipongkor Saha
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Neurosurgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Slawomir Antoszczyk
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Anouk Baars
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Thomas Frost
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
- Program in Virology, Harvard Medical School, Boston, Massachusetts, USA
| | - Robert L Martuza
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Neurosurgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Hiroaki Wakimoto
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Neurosurgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Samuel D Rabkin
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital, Boston, Massachusetts, USA
- Program in Virology, Harvard Medical School, Boston, Massachusetts, USA
- Department of Neurosurgery, Harvard Medical School, Boston, Massachusetts, USA
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Oncolytic Viruses as Therapeutic Tools for Pediatric Brain Tumors. Cancers (Basel) 2018; 10:cancers10070226. [PMID: 29987215 PMCID: PMC6071081 DOI: 10.3390/cancers10070226] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 07/04/2018] [Indexed: 12/18/2022] Open
Abstract
In recent years, we have seen an important progress in our comprehension of the molecular basis of pediatric brain tumors (PBTs). However, they still represent the main cause of death by disease in children. Due to the poor prognosis of some types of PBTs and the long-term adverse effects associated with the traditional treatments, oncolytic viruses (OVs) have emerged as an interesting therapeutic option since they displayed safety and high tolerability in pre-clinical and clinical levels. In this review, we summarize the OVs evaluated in different types of PBTs, mostly in pre-clinical studies, and we discuss the possible future direction of research in this field. In this sense, one important aspect of OVs antitumoral effect is the stimulation of an immune response against the tumor which is necessary for a complete response in preclinical immunocompetent models and in the clinic. The role of the immune system in the response of OVs needs to be evaluated in PBTs and represents an experimental challenge due to the limited immunocompetent models of these diseases available for pre-clinical research.
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50
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Emerging functional markers for cancer stem cell-based therapies: Understanding signaling networks for targeting metastasis. Semin Cancer Biol 2018; 53:90-109. [PMID: 29966677 DOI: 10.1016/j.semcancer.2018.06.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/20/2018] [Accepted: 06/28/2018] [Indexed: 12/18/2022]
Abstract
Metastasis is one of the most challenging issues in cancer patient management, and effective therapies to specifically target disease progression are missing, emphasizing the urgent need for developing novel anti-metastatic therapeutics. Cancer stem cells (CSCs) gained fast attention as a minor population of highly malignant cells within liquid and solid tumors that are responsible for tumor onset, self-renewal, resistance to radio- and chemotherapies, and evasion of immune surveillance accelerating recurrence and metastasis. Recent progress in the identification of their phenotypic and molecular characteristics and interactions with the tumor microenvironment provides great potential for the development of CSC-based targeted therapies and radical improvement in metastasis prevention and cancer patient prognosis. Here, we report on newly uncovered signaling mechanisms controlling CSC's aggressiveness and treatment resistance, and CSC-specific agents and molecular therapeutics, some of which are currently under investigation in clinical trials, gearing towards decisive functional CSC intrinsic or surface markers. One special research focus rests upon subverted regulatory pathways such as insulin-like growth factor 1 receptor signaling and its interactors in metastasis-initiating cell populations directly related to the gain of stem cell- and EMT-associated properties, as well as key components of the E2F transcription factor network regulating metastatic progression, microenvironmental changes, and chemoresistance. In addition, the study provides insight into systems biology tools to establish complex molecular relationships behind the emergence of aggressive phenotypes from high-throughput data that rely on network-based analysis and their use to investigate immune escape mechanisms or predict clinical outcome-relevant CSC receptor signaling signatures. We further propose that customized vector technologies could drastically enhance systemic drug delivery to target sites, and summarize recent progress and remaining challenges. This review integrates available knowledge on CSC biology, computational modeling approaches, molecular targeting strategies, and delivery techniques to envision future clinical therapies designed to conquer metastasis-initiating cells.
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