1
|
Formanski JP, Ngo HD, Grunwald V, Pöhlking C, Jonas JS, Wohlers D, Schwalbe B, Schreiber M. Transduction Efficiency of Zika Virus E Protein Pseudotyped HIV-1 gfp and Its Oncolytic Activity Tested in Primary Glioblastoma Cell Cultures. Cancers (Basel) 2024; 16:814. [PMID: 38398205 PMCID: PMC10887055 DOI: 10.3390/cancers16040814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
The development of new tools against glioblastoma multiforme (GBM), the most aggressive and common cancer originating in the brain, remains of utmost importance. Lentiviral vectors (LVs) are among the tools of future concepts, and pseudotyping offers the possibility of tailoring LVs to efficiently transduce and inactivate GBM tumor cells. Zika virus (ZIKV) has a specificity for GBM cells, leaving healthy brain cells unharmed, which makes it a prime candidate for the development of LVs with a ZIKV coat. Here, primary GBM cell cultures were transduced with different LVs encased with ZIKV envelope variants. LVs were generated by using the pNLgfpAM plasmid, which produces the lentiviral, HIV-1-based, core particle with GFP (green fluorescent protein) as a reporter (HIVgfp). Using five different GBM primary cell cultures and three laboratory-adapted GBM cell lines, we showed that ZIKV/HIVgfp achieved a 4-6 times higher transduction efficiency compared to the commonly used VSV/HIVgfp. Transduced GBM cell cultures were monitored over a period of 9 days to identify GFP+ cells to study the oncolytic effect due to ZIKV/HIVgfp entry. Tests of GBM tumor specificity by transduction of GBM tumor and normal brain cells showed a high specificity for GBM cells.
Collapse
Affiliation(s)
- Jan Patrick Formanski
- Department of Virology, LG Schreiber, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany (H.D.N.); (V.G.); (C.P.); (J.S.J.); (D.W.)
| | - Hai Dang Ngo
- Department of Virology, LG Schreiber, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany (H.D.N.); (V.G.); (C.P.); (J.S.J.); (D.W.)
| | - Vivien Grunwald
- Department of Virology, LG Schreiber, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany (H.D.N.); (V.G.); (C.P.); (J.S.J.); (D.W.)
| | - Celine Pöhlking
- Department of Virology, LG Schreiber, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany (H.D.N.); (V.G.); (C.P.); (J.S.J.); (D.W.)
| | - Jana Sue Jonas
- Department of Virology, LG Schreiber, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany (H.D.N.); (V.G.); (C.P.); (J.S.J.); (D.W.)
| | - Dominik Wohlers
- Department of Virology, LG Schreiber, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany (H.D.N.); (V.G.); (C.P.); (J.S.J.); (D.W.)
| | - Birco Schwalbe
- Department of Neurosurgery, Asklepios Klinik Nord, Standort Heidberg, 22417 Hamburg, Germany;
| | - Michael Schreiber
- Department of Virology, LG Schreiber, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany (H.D.N.); (V.G.); (C.P.); (J.S.J.); (D.W.)
| |
Collapse
|
2
|
Zhang J, Wang J, Li M, Su X, Tian Y, Wang P, Zhou X, Jin G, Liu F. Oncolytic HSV-1 suppresses cell invasion through downregulating Sp1 in experimental glioblastoma. Cell Signal 2023; 103:110581. [PMID: 36572188 DOI: 10.1016/j.cellsig.2022.110581] [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: 11/01/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
Gliomas are highly aggressive intracranial tumors that are difficult to resect and have high lethality and recurrence rates. According to WHO grading criteria, glioblastoma with wild-type IDH1 has a poorer prognosis than WHO grade 4 IDH-mutant astrocytomas. To date, no effective therapeutic strategies have been developed to treat glioblastoma. Clinical trials have shown that herpes simplex virus (HSV)-1 is the safest and most efficacious oncolytic virus against glioblastoma, but the molecular antitumor mechanism of action of HSV-1 has not yet been determined. Deletion of the γ34.5 and ICP47 genes from a strain of HSV-1 yielded the oncolytic virus, oHSV-1, which reduced glioma cell viability, migration, and invasive capacity, as well as the growth of microvilli. Infected cell polypeptide 4 (ICP4) expressed by oHSV-1 was found to suppress the expression of the transcription factor Sp1, reducing the expression of host invasion-related genes. In vivo, oHSV-1 showed significant antitumor effects by suppressing the expression of Sp1 and invasion-associated genes, highly expressed in high-grade glioblastoma tissue specimens. These findings indicate that Sp1 may be a molecular marker predicting the antitumor effects of oHSV-1 in the treatment of glioma and that oHSV-1 suppresses host cell invasion through the ICP4-mediated downregulation of Sp1.
Collapse
Affiliation(s)
- 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
| | - Jialin Wang
- 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
| | - Mingxin Li
- 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
| | - Yifu Tian
- 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
| | - Peiwen Wang
- 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
| | - Xianzhe Zhou
- 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
| | - Guishan Jin
- 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
| | - 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.
| |
Collapse
|
3
|
Handoko H, Wahyudi ST, Setyawan AA, Kartono A. A dynamical model of combination therapy applied to glioma. J Biol Phys 2022; 48:439-459. [PMID: 36367670 PMCID: PMC9727046 DOI: 10.1007/s10867-022-09618-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/28/2022] [Indexed: 11/13/2022] Open
Abstract
Glioma is a human brain tumor that is very difficult to treat at an advanced stage. Studies of glioma biomarkers have shown that some markers are released into the bloodstream, so data from these markers indicate a decrease in the concentration of blood glucose and serum glucose in patients with glioma; these suggest an association between glucose and glioma. This decrease mechanism in glucose concentration can be described by the coupled ordinary differential equations of the early-stage glioma growth and interactions between glioma cells, immune cells, and glucose concentration. In this paper, we propose developing a new mathematical model to explain how glioma cells evolve and survive combination therapy between chemotherapy and oncolytic virotherapy, as an alternative to glioma treatment. In this study, three therapies were applied for analysis, that is, (1) chemotherapy, (2) virotherapy, and (3) a combination of chemotherapy and virotherapy. Virotherapy uses specialist viruses that only attack tumor cells. Based on the simulation results of the therapy carried out, we conclude that combination therapy can reduce the glioma cells significantly compared to the other two therapies. The simulation results of this combination therapy can be an alternative to glioma therapy.
Collapse
Affiliation(s)
- Handoko Handoko
- Department of Physics, Faculty of Mathematical and Natural Science, IPB University (Bogor Agricultural University), Jalan Meranti, Building Wing S, 2nd Floor, Dramaga IPB Campus, 16680, Bogor, Indonesia.
| | - Setyanto Tri Wahyudi
- Department of Physics, Faculty of Mathematical and Natural Science, IPB University (Bogor Agricultural University), Jalan Meranti, Building Wing S, 2nd Floor, Dramaga IPB Campus, 16680, Bogor, Indonesia
| | - Ardian Arif Setyawan
- Department of Physics, Faculty of Mathematical and Natural Science, IPB University (Bogor Agricultural University), Jalan Meranti, Building Wing S, 2nd Floor, Dramaga IPB Campus, 16680, Bogor, Indonesia
| | - Agus Kartono
- Department of Physics, Faculty of Mathematical and Natural Science, IPB University (Bogor Agricultural University), Jalan Meranti, Building Wing S, 2nd Floor, Dramaga IPB Campus, 16680, Bogor, Indonesia.
| |
Collapse
|
4
|
Enhancement of CD70-specific CAR T treatment by IFN-γ released from oHSV-1-infected glioblastoma. Cancer Immunol Immunother 2022; 71:2433-2448. [PMID: 35249119 DOI: 10.1007/s00262-022-03172-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 02/11/2022] [Indexed: 12/17/2022]
Abstract
Even with progressive combination treatments, the prognosis of patients with glioblastoma (GBM) remains extremely poor. OV is one of the new promising therapeutic strategies to treat human GBM. OVs stimulate immune cells to release cytokines such as IFN-γ during oncolysis, further improve tumor microenvironment (TME) and enhance therapeutic efficacy. IFN-γ plays vital role in the apoptosis of tumor cells and recruitment of tumor-infiltrating T cells. We hypothesized that oncolytic herpes simplex virus-1 (oHSV-1) enhanced the antitumor efficacy of novel CD70-specific chimeric antigen receptor (CAR) T cells by T cell infiltration and IFN-γ release. In this study, oHSV-1 has the potential to stimulate IFN-γ secretion of tumor cells rather than T cell secretion and lead to an increase of T cell activity, as well as CD70-specific CAR T cells can specifically recognize and kill tumor cells in vitro. Specifically, combinational therapy with CD70-specific CAR T and oHSV-1 promotes tumor degradation by enhancing pro-inflammatory circumstances and reducing anti-inflammatory factors in vitro. More importantly, combined therapy generated potent antitumor efficacy, increased the proportion of T cells and natural killer cells in TME, and reduced regulatory T cells and transformed growth factor-β1 expression in orthotopic xenotransplanted animal model of GBM. In summary, we reveal that oHSV-1 enhance the therapeutic efficacy of CD70-spefific CAR T cells by intratumoral T cell infiltration and IFN-γ release, supporting the use of CAR T therapy in GBM therapeutic strategies.
Collapse
|
5
|
Zhou Z, Tian J, Zhang W, Xiang W, Ming Y, Chen L, Zhou J. Multiple strategies to improve the therapeutic efficacy of oncolytic herpes simplex virus in the treatment of glioblastoma. Oncol Lett 2021; 22:510. [PMID: 33986870 DOI: 10.3892/ol.2021.12771] [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: 10/22/2020] [Accepted: 03/29/2021] [Indexed: 11/06/2022] Open
Abstract
Oncolytic viruses have attracted widespread attention as biological anticancer agents that can selectively kill tumor cells without affecting normal cells. Although progress has been made in therapeutic strategies, the prognosis of patients with glioblastoma (GBM) remains poor and no ideal treatment approach has been developed. Recently, oncolytic herpes simplex virus (oHSV) has been considered a promising novel treatment approach for GBM. However, the therapeutic efficacy of oHSV in GBM, with its intricate pathophysiology, remains unsatisfactory due to several obstacles, such as limited replication and attenuated potency of oHSV owing to deletions or mutations in virulence genes, and ineffective delivery of the therapeutic virus. Multiple strategies have attempted to identify the optimal strategy for the successful clinical application of oHSV. Several preclinical trials have demonstrated that engineering novel oHSVs, developing combination therapies and improving methods for delivering oHSV to tumor cells seem to hold promise for improving the efficacy of this virotherapy.
Collapse
Affiliation(s)
- Zhengjun Zhou
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China.,Sichuan Clinical Research Center for Neurosurgery, Luzhou, Sichuan 646000, P.R. China
| | - Junjie Tian
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China.,Sichuan Clinical Research Center for Neurosurgery, Luzhou, Sichuan 646000, P.R. China
| | - Wenyan Zhang
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China.,Sichuan Clinical Research Center for Neurosurgery, Luzhou, Sichuan 646000, P.R. China
| | - Wei Xiang
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China.,Sichuan Clinical Research Center for Neurosurgery, Luzhou, Sichuan 646000, P.R. China
| | - Yang Ming
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China.,Sichuan Clinical Research Center for Neurosurgery, Luzhou, Sichuan 646000, P.R. China
| | - Ligang Chen
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China.,Sichuan Clinical Research Center for Neurosurgery, Luzhou, Sichuan 646000, P.R. China.,Academician (Expert) Workstation of Sichuan Province, Luzhou, Sichuan 646000, P.R. China.,Neurological Diseases and Brain Function Laboratory, Luzhou, Sichuan 646000, P.R. China
| | - Jie Zhou
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China.,Sichuan Clinical Research Center for Neurosurgery, Luzhou, Sichuan 646000, P.R. China.,Academician (Expert) Workstation of Sichuan Province, Luzhou, Sichuan 646000, P.R. China.,Neurological Diseases and Brain Function Laboratory, Luzhou, Sichuan 646000, P.R. China
| |
Collapse
|
6
|
Liu S, Liu F, Zhao M, Zhang J. Antitumor Efficacy of Oncolytic Herpes Virus Type 1 Armed with GM-CSF in Murine Uveal Melanoma Xenografts. Cancer Manag Res 2020; 12:11803-11812. [PMID: 33239914 PMCID: PMC7680789 DOI: 10.2147/cmar.s274605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/29/2020] [Indexed: 12/17/2022] Open
Abstract
Background Uveal melanoma (UM) is the most common primary intraocular tumor in adults with a high incidence of metastasis. Standard care therapies for UM include enucleation and radiation, which are minimally effective in prolonging patient survival. Oncolytic virus treatment has become a new trend in cancer field. Of which, oncolytic herpes simplex virus type 1 (HSV-1) therapy is one of the most effective antitumor treatments. Here, we established an oncolytic HSV-1 encoding granulocyte-macrophage colony-stimulating factor (GM-CSF), tested its efficacy in UM therapy, and investigated the innate immune response induced by this virus. Methods Oncolytic HSV-1 expressing GM-CSF (HSV-GM-CSF) was constructed, then verified using qPCR and Western blot assays. Cell viability assays and transmission electron microscopy were conducted on three UM cell lines, MUM2B, 92.1, and MP41, to assess the cell-killing ability and virus infection of this virus. For in vivo experiments, BALB/c-nude mice in situ UM xenografts were established to testify the efficacy of the oncolytic virus, oncolytic HSV-1, and HSV-GM-CSF groups, respectively. IVIS images, ocular volumes, mice weights, and survivals were tracked to see the efficacy of the virus. Hematoxylin and eosin staining, immunohistochemistry, and flow cytometry analyses were conducted to demonstrate the immune activity after virus treatment. Results All three tested UM cell lines were sensitive to infection by HSV-GM-CSF. In vivo xenograft experiments revealed that oncolytic virus HSV-1 reduced UM tumor volume and that oncolytic virus HSV-1 armed with GM-CSF enhanced the antitumor effect compared with unmodified HSV-1. The bodyweights of untreated control group mice were significantly lower than those of mice in either virus-treated group (HSV-1 or HSV-GM-CSF). Follow-up survivals were prolonged in the virus-treated groups compared with the control group and were prolonged to a greater extent in the HSV-GM-CSF group than in the HSV-1 group. Macrophage stimulation was observed following HSV-GM-CSF treatment. Conclusion Our results indicate that the recombinant oncolytic virus HSV-GM-CSF is a potential therapeutic treatment for UM.
Collapse
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, People's Republic of China
| | - Fusheng Liu
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Beijing Laboratory of Biomedical Materials, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing 100070, People's Republic of 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, People's Republic of China
| | - Junwen Zhang
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Beijing Laboratory of Biomedical Materials, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing 100070, People's Republic of China
| |
Collapse
|
7
|
Kim DS. Cancer stem cell plasticity in glioblastoma multiforme: a perspective on future directions in oncolytic virotherapy. Future Oncol 2020; 16:2251-2264. [PMID: 32744059 DOI: 10.2217/fon-2019-0606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The cancer stem cell (CSC) hypothesis suggests that a rare population of stem-like cells underpin tumorigenesis. Oncolytic viruses (OVs) demonstrate novel mechanisms of targeting the elusive CSCs with greater selectivity - promising therapeutic potential against solid tumors such as glioblastoma (GBM) that are resistant to conventional treatment. In general, OVs have failed to translate the efficacy from bench to bedside. The success of OVs rely on the hypothesis that eliminating CSCs is key to preventing recurrence. However, newly emerging evidence of CSC plasticity challenge this hypothesis by proposing that the CSC pool can be regenerated from non-CSCs post-treatment. We review this evidence surrounding the CSC hypothesis to propose an original perspective on why several advanced OVs may be failing to reflect their true potential in clinical trials. We argue that preventing non-CSC to CSC dedifferentiation may be critical to achieving long-term treatment efficacy in future OV clinical trials.
Collapse
Affiliation(s)
- David S Kim
- Medical Sciences Division, John Radcliffe Hospital, University of Oxford, Oxford OX1 1DP, United Kingdom
| |
Collapse
|
8
|
Huang T, Song X, Xu D, Tiek D, Goenka A, Wu B, Sastry N, Hu B, Cheng SY. Stem cell programs in cancer initiation, progression, and therapy resistance. Am J Cancer Res 2020; 10:8721-8743. [PMID: 32754274 PMCID: PMC7392012 DOI: 10.7150/thno.41648] [Citation(s) in RCA: 207] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 04/09/2020] [Indexed: 12/13/2022] Open
Abstract
Over the past few decades, substantial evidence has convincingly revealed the existence of cancer stem cells (CSCs) as a minor subpopulation in cancers, contributing to an aberrantly high degree of cellular heterogeneity within the tumor. CSCs are functionally defined by their abilities of self-renewal and differentiation, often in response to cues from their microenvironment. Biological phenotypes of CSCs are regulated by the integrated transcriptional, post-transcriptional, metabolic, and epigenetic regulatory networks. CSCs contribute to tumor progression, therapeutic resistance, and disease recurrence through their sustained proliferation, invasion into normal tissue, promotion of angiogenesis, evasion of the immune system, and resistance to conventional anticancer therapies. Therefore, elucidation of the molecular mechanisms that drive cancer stem cell maintenance, plasticity, and therapeutic resistance will enhance our ability to improve the effectiveness of targeted therapies for CSCs. In this review, we highlight the key features and mechanisms that regulate CSC function in tumor initiation, progression, and therapy resistance. We discuss factors for CSC therapeutic resistance, such as quiescence, induction of epithelial-to-mesenchymal transition (EMT), and resistance to DNA damage-induced cell death. We evaluate therapeutic approaches for eliminating therapy-resistant CSC subpopulations, including anticancer drugs that target key CSC signaling pathways and cell surface markers, viral therapies, the awakening of quiescent CSCs, and immunotherapy. We also assess the impact of new technologies, such as single-cell sequencing and CRISPR-Cas9 screening, on the investigation of the biological properties of CSCs. Moreover, challenges remain to be addressed in the coming years, including experimental approaches for investigating CSCs and obstacles in therapeutic targeting of CSCs.
Collapse
|
9
|
Zhang Q, Liu F. Advances and potential pitfalls of oncolytic viruses expressing immunomodulatory transgene therapy for malignant gliomas. Cell Death Dis 2020; 11:485. [PMID: 32587256 PMCID: PMC7316762 DOI: 10.1038/s41419-020-2696-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/09/2020] [Accepted: 06/15/2020] [Indexed: 12/12/2022]
Abstract
Glioblastoma (GBM) is an immunosuppressive, lethal brain tumor. Despite advances in molecular understanding and therapies, the clinical benefits have remained limited, and the life expectancy of patients with GBM has only been extended to ~15 months. Currently, genetically modified oncolytic viruses (OV) that express immunomodulatory transgenes constitute a research hot spot in the field of glioma treatment. An oncolytic virus is designed to selectively target, infect, and replicate in tumor cells while sparing normal tissues. Moreover, many studies have shown therapeutic advantages, and recent clinical trials have demonstrated the safety and efficacy of their usage. However, the therapeutic efficacy of oncolytic viruses alone is limited, while oncolytic viruses expressing immunomodulatory transgenes are more potent inducers of immunity and enhance immune cell-mediated antitumor immune responses in GBM. An increasing number of basic studies on oncolytic viruses encoding immunomodulatory transgene therapy for malignant gliomas have yielded beneficial outcomes. Oncolytic viruses that are armed with immunomodulatory transgenes remain promising as a therapy against malignant gliomas and will undoubtedly provide new insights into possible clinical uses or strategies. In this review, we summarize the research advances related to oncolytic viruses that express immunomodulatory transgenes, as well as potential treatment pitfalls in patients with malignant gliomas.
Collapse
Affiliation(s)
- Qing Zhang
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China.
- Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing, 100070, China.
- Beijing Laboratory of Biomedical Materials, Beijing, 100070, China.
| | - Fusheng Liu
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China.
- Department of Neurosurgery, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing, 100070, China.
- Beijing Laboratory of Biomedical Materials, Beijing, 100070, China.
| |
Collapse
|
10
|
Mi R, Fan W, Ji J, Dong C, Jin G, Liu F. The enhanced efficacy of herpes simplex virus by lentivirus mediated VP22 and cytosine deaminase gene therapy against glioma. Brain Res 2020; 1743:146898. [PMID: 32439343 DOI: 10.1016/j.brainres.2020.146898] [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: 11/07/2019] [Revised: 04/14/2020] [Accepted: 05/15/2020] [Indexed: 12/27/2022]
Abstract
Despite the comprehensive treatment of surgery following by concurrent radiochemotherapy, the prognosis of malignant glioma remains unsatisfactory with an awful median survival time of only 12-18 months. This might be improved by the development of oncolytic herpes simplex virus. However, the biggest challenge of recombinant herpes simplex virus (rHSV) lies in their limited therapeutic efficiency in clinical trials. This study aims to enhance the efficacy of rHSV against glioma by a HSV-1 tegument protein VP22 modified cytosine deaminase/5-flurocytosine (CD/5-FC) suicide gene system. Stable glioma cell lines carrying CD or VP22-CD fusion gene were successfully obtained by lentiviral infection following Fluorescence-activated cell sorting. The lethal effect of the prodrug 5-FC was significantly increased in the transduced VP22-CD glioma cells compared to the transduced CD glioma cells. Interestingly, VP22 was found to elicit the enhanced efficacy of rHSV-1 against glioma. Furthermore, we detected a synergistic efficacy of rHSV-1 combined with lentivirus mediated VP22 and CD suicide gene therapy in the orthotopic glioma xenograft models. In conclusion, we successfully established the stable cell lines carrying VP22-CD fusion genes. The incorporation of VP22 further induced an enhanced efficacy of rHSV-1 as well as CD suicide gene therapy respectively and synthetically in vitro. Also, we demonstrated an increased therapeutic benefit of rHAV-1 by VP22 modified CD gene therapy against glioma in vivo.
Collapse
Affiliation(s)
- Ruifang Mi
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital, Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing 100070, China
| | - Wenhua Fan
- Department of Neurosurgery, Tianjin Huanhu Hospital, Nankai University, Tianjin Central Hospital for Neurosurgery and Neurology, Tianjin 300350, China
| | - Jiayu Ji
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital, Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing 100070, China
| | - Chengyuan Dong
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital, Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing 100070, China
| | - Guishan Jin
- Brain Tumor Research Center, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital, Affiliated to Capital Medical University, Beijing Laboratory of Biomedical Materials, Beijing 100070, 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 100070, China.
| |
Collapse
|
11
|
Zikavirus prME Envelope Pseudotyped Human Immunodeficiency Virus Type-1 as a Novel Tool for Glioblastoma-Directed Virotherapy. Cancers (Basel) 2020; 12:cancers12041000. [PMID: 32325703 PMCID: PMC7226176 DOI: 10.3390/cancers12041000] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/09/2020] [Accepted: 04/15/2020] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma multiforme is the most lethal type of brain tumor that is not yet curable owing to its frequent resurgence after surgery. Resistance is mainly caused by the presence of a subpopulation of tumor cells, the glioma stem cells (GSCs), which are highly resistant to radiation and chemotherapy. In 2015, Zikavirus (ZIKV)-induced microcephaly emerged in newborns, indicating that ZIKV has a specific neurotropism. Accordingly, an oncolytic tropism for infecting GSCs was demonstrated in a murine tumor model. Like other flaviviruses, ZIKV is enveloped by two proteins, prM and E. The pME expression plasmid along with the HIV-1 vector pNL Luc AM generated prME pseudotyped viral particles. Four different prME envelopes, Z1 to Z4, were cloned, and the corresponding pseudotypes, Z1- to Z4-HIVluc, produced by this two-plasmid system, were tested for entry efficiency using Vero-B4 cells. The most efficient pseudotype, Z1-HIVluc, also infected glioma-derived cell lines U87 and 86HG39. The pseudotype system was then extended by using a three-plasmid system including pME-Z1, the HIV-1 packaging plasmid psPAX2, and the lentiviral vector pLenti-luciferase-P2A-Neo. The corresponding pseudotype, designated Z1-LENTIluc, also infected U87 and 86HG39 cells. Altogether, a pseudotyped virus especially targeting glioma-derived cells might be a promising candidate for a prospective glioblastoma-directed virotherapy.
Collapse
|
12
|
Ajina A, Maher J. Synergistic combination of oncolytic virotherapy with CAR T-cell therapy. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 164:217-292. [PMID: 31383406 DOI: 10.1016/bs.pmbts.2019.06.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
For patients with advanced hematological malignancies the therapeutic landscape has been transformed by the emergence of adoptive cell transfer utilizing autologous chimeric antigen receptor (CAR)-redirected T-cells. However, solid tumors have proved far more resistant to this approach. Here, we summarize the numerous challenges faced by CAR T-cells designed to target solid tumors, highlighting, in particular, issues related to impaired trafficking, expansion, and persistence. In parallel, we draw attention to exciting developments in the burgeoning field of oncolytic virotherapy and posit strategies for the synergistic combination of oncolytic viruses with CAR T-cells to improve outcomes for patients with advanced solid tumors.
Collapse
Affiliation(s)
- Adam Ajina
- King's College London, Division of Cancer Studies, Guy's Hospital, London, United Kingdom.
| | - John Maher
- King's College London, Division of Cancer Studies, Guy's Hospital, London, United Kingdom; Department of Clinical Immunology and Allergy, King's College Hospital NHS Foundation Trust, London, United Kingdom; Department of Immunology, Eastbourne Hospital, East Sussex, United Kingdom
| |
Collapse
|
13
|
Bahreyni A, Ghorbani E, Fuji H, Ryzhikov M, Khazaei M, Erfani M, Avan A, Hassanian SM, Azadmanesh K. Therapeutic potency of oncolytic virotherapy-induced cancer stem cells targeting in brain tumors, current status, and perspectives. J Cell Biochem 2018; 120:2766-2773. [PMID: 30321455 DOI: 10.1002/jcb.27661] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 08/21/2018] [Indexed: 12/11/2022]
Abstract
Brain tumors are the most common form of solid tumors in children and is presently a serious therapeutic challenge worldwide. Traditional treatment with chemotherapy and radiotherapy was shown to be unsuccessful in targeting brain tumor cancer stem cells (CSCs), leading to recurrent, treatment-resistant secondary malignancies. Oncolytic virotherapy (OV) is an effective antitumor therapeutic strategy which offers a novel, targeted approach for eradicating pediatric brain tumor CSCs by utilizing mechanisms of cell killing that differ from conventional therapies. A number of studies and some clinical trials have therefore investigated the effects of combined therapy of radiations or chemotherapies with oncolytic viruses which provide new insights regarding the effectiveness and improvement of treatment responses for brain cancer patients. This review summarizes the current knowledge of the therapeutic potency of OVs-induced CSCs targeting in the treatment of brain tumors for a better understanding and hence a better management of this disease.
Collapse
Affiliation(s)
- Amirhossein Bahreyni
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Elnaz Ghorbani
- Department of Microbiology, Al-Zahra University, Tehran, Iran
| | - Hamid Fuji
- Department of Biochemistry, Payame-Noor University, Mashhad, Iran
| | - Mikhail Ryzhikov
- Division of Pulmonary and Critical Care Medicine, Washington University, School of Medicine, Saint Louis, Missouri
| | - Majid Khazaei
- Department of Medical Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Marjan Erfani
- Department of Neurology, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Avan
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed M Hassanian
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Biochemistry, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | |
Collapse
|
14
|
Terai K, Bi D, Liu Z, Kimura K, Sanaat Z, Dolatkhah R, Soleimani M, Jones C, Bright A, Esfandyari T, Farassati F. A Novel Oncolytic Herpes Capable of Cell-Specific Transcriptional Targeting of CD133± Cancer Cells Induces Significant Tumor Regression. Stem Cells 2018; 36:1154-1169. [PMID: 29658163 DOI: 10.1002/stem.2835] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 02/16/2017] [Accepted: 03/10/2017] [Indexed: 12/11/2022]
Abstract
The topic of cancer stem cells (CSCs) is of significant importance due to its implications in our understanding of the tumor biology as well as the development of novel cancer therapeutics. However, the question of whether targeting CSCs can hamper the growth of tumors remains mainly unanswered due to the lack of specific agents for this purpose. To address this issue, we have developed the first mutated version of herpes simplex virus-1 that is transcriptionally targeted against CD133+ cells. CD133 has been portrayed as one of the most important markers in CSCs involved in the biology of a number of human cancers, including liver, brain, colon, skin, and pancreas. The virus developed in this work, Signal-Smart 2, showed specificity against CD133+ cells in three different models (hepatocellular carcinoma, colorectal cancer, and melanoma) resulting in a loss of viability and invasiveness of cancer cells. Additionally, the virus showed robust inhibitory activity against in vivo tumor growth in both preventive and therapeutic mouse models as well as orthotopic model highly relevant to potential clinical application of this virus. Therefore, we conclude that targeting CD133+ CSCs has the potential to be pursued as a novel strategy against cancer. Stem Cells 2018;36:1154-1169.
Collapse
Affiliation(s)
- Kaoru Terai
- Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas, Missouri, USA
| | - Danse Bi
- Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas, Missouri, USA
| | - Zhengian Liu
- Midwest Biomedical Research Foundation, Kansas City Veterans Affairs Medical Center, Kansas, Missouri, USA
| | - Kyle Kimura
- Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas, Missouri, USA
| | - Zohreh Sanaat
- Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas, Missouri, USA
| | - Roya Dolatkhah
- Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas, Missouri, USA
| | - Mina Soleimani
- Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas, Missouri, USA
| | - Christopher Jones
- Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas, Missouri, USA
| | - Allison Bright
- Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas, Missouri, USA
| | - Tuba Esfandyari
- Molecular Medicine Laboratory, The University of Kansas Medical School, Kansas, Missouri, USA
| | - Faris Farassati
- Midwest Biomedical Research Foundation, Kansas City Veterans Affairs Medical Center, Kansas, Missouri, USA.,Saint Luke's Cancer Institute-Saint Luke's Marion Bloch Neuroscience Institute, Kansas, Missouri, USA
| |
Collapse
|
15
|
Li T, Kang G, Wang T, Huang H. Tumor angiogenesis and anti-angiogenic gene therapy for cancer. Oncol Lett 2018; 16:687-702. [PMID: 29963134 PMCID: PMC6019900 DOI: 10.3892/ol.2018.8733] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 07/11/2017] [Indexed: 12/22/2022] Open
Abstract
When Folkman first suggested a theory about the association between angiogenesis and tumor growth in 1971, the hypothesis of targeting angiogenesis to treat cancer was formed. Since then, various studies conducted across the world have additionally confirmed the theory of Folkman, and numerous efforts have been made to explore the possibilities of curing cancer by targeting angiogenesis. Among them, anti-angiogenic gene therapy has received attention due to its apparent advantages. Although specific problems remain prior to cancer being fully curable using anti-angiogenic gene therapy, several methods have been explored, and progress has been made in pre-clinical and clinical settings over previous decades. The present review aimed to provide up-to-date information concerning tumor angiogenesis and gene delivery systems in anti-angiogenic gene therapy, with a focus on recent developments in the study and application of the most commonly studied and newly identified anti-angiogenic candidates for anti-angiogenesis gene therapy, including interleukin-12, angiostatin, endostatin, tumstatin, anti-angiogenic metargidin peptide and endoglin silencing.
Collapse
Affiliation(s)
- Tinglu Li
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P.R. China
- Key Laboratory of Systems Bioengineering, Ministry of Education, Tianjin University, Tianjin 300072, P.R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P.R. China
| | - Guangbo Kang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P.R. China
- Key Laboratory of Systems Bioengineering, Ministry of Education, Tianjin University, Tianjin 300072, P.R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P.R. China
| | - Tingyue Wang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P.R. China
- Key Laboratory of Systems Bioengineering, Ministry of Education, Tianjin University, Tianjin 300072, P.R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P.R. China
| | - He Huang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P.R. China
- Key Laboratory of Systems Bioengineering, Ministry of Education, Tianjin University, Tianjin 300072, P.R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P.R. China
| |
Collapse
|
16
|
Chaurasiya S, Chen NG, Warner SG. Oncolytic Virotherapy versus Cancer Stem Cells: A Review of Approaches and Mechanisms. Cancers (Basel) 2018; 10:E124. [PMID: 29671772 PMCID: PMC5923379 DOI: 10.3390/cancers10040124] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/11/2018] [Accepted: 04/14/2018] [Indexed: 12/26/2022] Open
Abstract
A growing body of evidence suggests that a subset of cells within tumors are resistant to conventional treatment modalities and may be responsible for disease recurrence. These cells are called cancer stem cells (CSC), which share properties with normal stem cells including self-renewal, pluripotency, drug resistance, and the ability to maintain quiescence. While most conventional therapies can efficiently destroy rapidly dividing cancer cells comprising the bulk of a tumor, they often fail to kill the less abundant and quiescent CSCs. Furthermore, killing of only differentiated cells in the tumor may actually allow for enrichment of CSCs and thereby portend a bad prognosis. Therefore, targeting of CSCs is important to achieve long-term success in cancer therapy. Oncolytic viruses represent a completely different class of therapeutics that can kill cancer cells in a variety of ways, which differ from those of conventional therapies. Hence, CSCs that are inherently resistant to conventional therapies may be susceptible to oncolytic virus-mediated killing. Recent studies have shown that oncolytic viruses can efficiently kill CSCs in many types of cancer. Here, we discuss the mechanism through which CSCs can escape conventional therapies and how they may still be susceptible to different classes of oncolytic viruses. Furthermore, we provide a summary of recent studies that have tested oncolytic viruses on CSCs of different origins and discuss possible future directions for this fascinating subset of oncolytic virus research.
Collapse
Affiliation(s)
- Shyambabu Chaurasiya
- Department of Surgery, Division of Surgical Oncology, City of Hope National Medical Center, Duarte, CA 91010, USA.
| | - Nanhai G Chen
- Department of Surgery, Division of Surgical Oncology, City of Hope National Medical Center, Duarte, CA 91010, USA.
- Center for Gene Therapy, Department of Hematologic and Hematopoietic Cell Transplantation, Beckman Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA.
- Gene Editing and Viral Vector Core, Beckman Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA.
| | - Susanne G Warner
- Department of Surgery, Division of Surgical Oncology, City of Hope National Medical Center, Duarte, CA 91010, USA.
| |
Collapse
|
17
|
CD133 positive U87 glioblastoma cells-derived exosomal microRNAs in hypoxia- versus normoxia-microenviroment. J Neurooncol 2017; 135:37-46. [PMID: 28948499 DOI: 10.1007/s11060-017-2566-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 07/13/2017] [Indexed: 02/06/2023]
Abstract
Hypoxia is a major regulator of glioma development and aggressiveness. However, how CD133 positive U87 glioblastoma cells adapt to hypoxia and communicate with their surrounding microenvironment during tumor development remain important questions. Communication with host cells and stroma via exosomes represents one pathway by which tumors can modify their surroundings to achieve a tumor-permissive environment. MicroRNAs are thought to be essential actors of tumorigenesis as they are able to control the expression of numerous genes. Here, we show that exosomes derived from CD133+ U87 glioblastoma cells grown at hypoxic compared with normoxic conditions are potent proliferation inducers of the tumor vasculature and glioma cells proliferation in vitro. Moreover, we analyze the microRNA content of exosomes produced in vitro by hypoxia and normoxia CD133+ U87 glioblastoma cells using Affymetrix microarrays. It appears that the exosome microRNA profiles are qualitatively quite similar. Nevertheless, their quantitative profiles are different and may be potentially taken as an opportunity to carry out assays of diagnostic interest. We conclude that CD133+ U87 glioblastoma cells derived exosome-mediated miRNA transduction play an important role of mediating a proangiogenic response and glioma cells proliferation, and that the exosomal pathway constitutes a potentially targetable driver of hypoxia-dependent intercellular signaling during tumor development.
Collapse
|
18
|
Cheng S, Mi R, Xu Y, Jin G, Zhang J, Zhou Y, Chen Z, Liu F. Ferritin heavy chain as a molecular imaging reporter gene in glioma xenografts. J Cancer Res Clin Oncol 2017; 143:941-951. [PMID: 28247036 DOI: 10.1007/s00432-017-2356-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 01/27/2017] [Indexed: 01/22/2023]
Abstract
PURPOSE The development of glioma therapy in clinical practice (e.g., gene therapy) calls for efficiently visualizing and tracking glioma cells in vivo. Human ferritin heavy chain is a novel gene reporter in magnetic resonance imaging. This study proposes hFTH as a reporter gene for MR molecular imaging in glioma xenografts. METHODS Rat C6 glioma cells were infected by packaged lentivirus carrying hFTH and EGFP genes and obtained by fluorescence-activated cell sorting. The iron-loaded ability was analyzed by the total iron reagent kit. Glioma nude mouse models were established subcutaneously and intracranially. Then, in vivo tumor bioluminescence was performed via the IVIS spectrum imaging system. The MR imaging analysis was analyzed on a 7T animal MRI scanner. Finally, the expression of hFTH was analyzed by western blotting and histological analysis. RESULTS Stable glioma cells carrying hFTH and EGFP reporter genes were successfully obtained. The intracellular iron concentration was increased without impairing the cell proliferation rate. Glioma cells overexpressing hFTH showed significantly decreased signal intensity on T2-weighted MRI both in vitro and in vivo. EGFP fluorescent imaging could also be detected in the subcutaneous and intracranial glioma xenografts. Moreover, the expression of the transferritin receptor was significantly increased in glioma cells carrying the hFTH reporter gene. CONCLUSION Our study illustrated that hFTH generated cellular MR imaging contrast efficiently in glioma via regulating the expression of transferritin receptor. This might be a useful reporter gene in cell tracking and MR molecular imaging for glioma diagnosis, gene therapy and tumor metastasis.
Collapse
Affiliation(s)
- Sen Cheng
- Brain Tumor Research Center, Beijing Laboratory of Biomedical Materials, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital affiliated to Capital Medical University, Tiantan Xili 6, Dongcheng District, Beijing, 100050, People's Republic of China
| | - Ruifang Mi
- Brain Tumor Research Center, Beijing Laboratory of Biomedical Materials, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital affiliated to Capital Medical University, Tiantan Xili 6, Dongcheng District, Beijing, 100050, People's Republic of China
| | - Yu Xu
- Radiology Department, Dongzhimen Hospital Beijing University of Chinese Medicine, No. 5 Hai Yun Cang, Dong Cheng District, Beijing, 100700, People's Republic of China
| | - Guishan Jin
- Brain Tumor Research Center, Beijing Laboratory of Biomedical Materials, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital affiliated to Capital Medical University, Tiantan Xili 6, Dongcheng District, Beijing, 100050, People's Republic of China
| | - Junwen Zhang
- Brain Tumor Research Center, Beijing Laboratory of Biomedical Materials, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital affiliated to Capital Medical University, Tiantan Xili 6, Dongcheng District, Beijing, 100050, People's Republic of China
| | - Yiqiang Zhou
- Brain Tumor Research Center, Beijing Laboratory of Biomedical Materials, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital affiliated to Capital Medical University, Tiantan Xili 6, Dongcheng District, Beijing, 100050, People's Republic of China
| | - Zhengguang Chen
- Radiology Department, Dongzhimen Hospital Beijing University of Chinese Medicine, No. 5 Hai Yun Cang, Dong Cheng District, Beijing, 100700, People's Republic of China.
| | - Fusheng Liu
- Brain Tumor Research Center, Beijing Laboratory of Biomedical Materials, Beijing Neurosurgical Institute, Department of Neurosurgery, Beijing Tiantan Hospital affiliated to Capital Medical University, Tiantan Xili 6, Dongcheng District, Beijing, 100050, People's Republic of China.
| |
Collapse
|
19
|
Zhao YD, Zhang QB, Chen H, Fei XF, Shen YT, Ji XY, Ma JW, Wang AD, Dong J, Lan Q, Huang Q. Research on human glioma stem cells in China. Neural Regen Res 2017; 12:1918-1926. [PMID: 29239340 PMCID: PMC5745848 DOI: 10.4103/1673-5374.219055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Research on human glioma stem cells began early in the 21st century and since then has become a rapidly growing research field with the number of publications increasing year by year. The research conducted by our diverse group of investigators focused primarily on cell culture techniques, molecular regulation, signaling pathways, cancer treatment, the stem cell microenvironment and the cellular origin and function of glioma stem cells. In particular, we put forward our view that there are inverse or forward transformations among neural stem cells, glial cells and glioma stem cells in glioma tissues under certain conditions. Based on the background of the progress of international research on human glioma stem cells, we aim to share our progress and current findings of human glioma stem cell research in China with colleagues around the world.
Collapse
Affiliation(s)
- Yao-Dong Zhao
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province; Shanghai General Hospital, Shanghai, China
| | - Quan-Bin Zhang
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province; Shanghai 10th People's Hospital, Shanghai, China
| | - Hua Chen
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province; Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xi-Feng Fei
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province; Suzhou Kowloon Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yun-Tian Shen
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Xiao-Yan Ji
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Jia-Wei Ma
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Ai-Dong Wang
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Jun Dong
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Qing Lan
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Qiang Huang
- Department of Neurosurgery and Brain Tumor Research Laboratory, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| |
Collapse
|
20
|
Ding J. Oncolytic virus as a cancer stem cell killer: progress and challenges. Stem Cell Investig 2014; 1:22. [PMID: 27358868 DOI: 10.3978/j.issn.2306-9759.2014.12.02] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 12/21/2014] [Indexed: 01/15/2023]
Abstract
Oncolytic viruses (OVs), which were discovered more than one century ago, have been used in multiple clinical trials for cancer therapy. OVs specifically target cancer cells when sparing normal cells by exploiting biochemical differences between normal and tumor cells. Hence oncolytic virotherapy is more specific at targeting cancer cells compared with conventional anti-cancer therapy. Apart from the lack of specificity, conventional anti-cancer therapies also often witness relapse and incomplete cure of cancer. One hypothesis explaining this phenomenon is that a subpopulation of cancer cells, known as cancer stem cells (CSCs), are resistant to conventional therapies, possibly due to its self-renewal and differentiation abilities. With the discovery of CSCs, researchers have been trying to explain whether OVs are well suited to eliminate CSCs. Two explanations for postulating OVs as ideal candidates for cancer therapy have been proposed: first, OVs are not subject to the same mechanisms responsible for chemotherapy and radiation resistance; second, viruses could be harnessed to express therapeutic transgenes that specifically target the features unique to CSCs or the properties CSCs rely on for self-renewal and differentiation. Indeed, initial studies suggest that OVs could effectively target CSCs in multiple tumor types. The focus of this review is to highlight recent studies related to the application of OVs on targeting CSCs, based on which, the challenges and perspectives for further research in this field will also be discussed.
Collapse
Affiliation(s)
- Jingzhen Ding
- Department of Cellular and Molecular Medicine, Howard Hughes Medical Institute, University of California at San Diego, La Jolla, CA 92093, USA
| |
Collapse
|
21
|
Ning J, Wakimoto H. Oncolytic herpes simplex virus-based strategies: toward a breakthrough in glioblastoma therapy. Front Microbiol 2014; 5:303. [PMID: 24999342 PMCID: PMC4064532 DOI: 10.3389/fmicb.2014.00303] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 06/03/2014] [Indexed: 12/12/2022] Open
Abstract
Oncolytic viruses (OV) are a class of antitumor agents that selectively kill tumor cells while sparing normal cells. Oncolytic herpes simplex virus (oHSV) has been investigated in clinical trials for patients with the malignant brain tumor glioblastoma for more than a decade. These clinical studies have shown the safety of oHSV administration to the human brain, however, therapeutic efficacy of oHSV as a single treatment remains unsatisfactory. Factors that could hamper the anti-glioblastoma efficacy of oHSV include: attenuated potency of oHSV due to deletion or mutation of viral genes involved in virulence, restricting viral replication and spread within the tumor; suboptimal oHSV delivery associated with intratumoral injection; virus infection-induced inflammatory and cellular immune responses which could inhibit oHSV replication and promote its clearance; lack of effective incorporation of oHSV into standard-of-care, and poor knowledge about the ability of oHSV to target glioblastoma stem cells (GSCs). In an attempt to address these issues, recent research efforts have been directed at: (1) design of new engineered viruses to enhance potency, (2) better understanding of the role of the cellular immunity elicited by oHSV infection of tumors, (3) combinatorial strategies with different antitumor agents with a mechanistic rationale, (4) “armed” viruses expressing therapeutic transgenes, (5) use of GSC-derived models in oHSV evaluation, and (6) combinations of these. In this review, we will describe the current status of oHSV clinical trials for glioblastoma, and discuss recent research advances and future directions toward successful oHSV-based therapy of glioblastoma.
Collapse
Affiliation(s)
- Jianfang Ning
- 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
| |
Collapse
|
22
|
Enhanced antitumor efficacy of an oncolytic herpes simplex virus expressing an endostatin-angiostatin fusion gene in human glioblastoma stem cell xenografts. PLoS One 2014; 9:e95872. [PMID: 24755877 PMCID: PMC3995956 DOI: 10.1371/journal.pone.0095872] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 04/01/2014] [Indexed: 11/19/2022] Open
Abstract
Viruses have demonstrated strong potential for the therapeutic targeting of glioblastoma stem cells (GSCs). In this study, the use of a herpes simplex virus carrying endostatin–angiostatin (VAE) as a novel therapeutic targeting strategy for glioblastoma-derived cancer stem cells was investigated. We isolated six stable GSC-enriched cultures from 36 human glioblastoma specimens and selected one of the stable GSCs lines for establishing GSC-carrying orthotopic nude mouse models. The following results were obtained: (a) VAE rapidly proliferated in GSCs and expressed endo–angio in vitro and in vivo 48 h and 10 d after infection, respectively; (b) compared with the control gliomas treated with rHSV or Endostar, the subcutaneous gliomas derived from the GSCs showed a significant reduction in microvessel density after VAE treatment; (c) compared with the control, a significant improvement was observed in the length of the survival of mice with intracranial and subcutaneous gliomas treated with VAE; (d) MRI analysis showed that the tumor volumes of the intracranial gliomas generated by GSCs remarkably decreased after 10 d of VAE treatment compared with the controls. In conclusion, VAE demonstrated oncolytic therapeutic efficacy in animal models of human GSCs and expressed an endostatin–angiostatin fusion gene, which enhanced antitumor efficacy most likely by restricting tumor microvasculature development.
Collapse
|
23
|
Calpain-dependent clearance of the autophagy protein p62/SQSTM1 is a contributor to ΔPK oncolytic activity in melanoma. Gene Ther 2014; 21:371-8. [PMID: 24553345 PMCID: PMC3975656 DOI: 10.1038/gt.2014.6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 12/17/2013] [Accepted: 01/06/2014] [Indexed: 02/07/2023]
Abstract
Oncolytic virotherapy is a promising strategy to reduce tumor burden through selective virus replication in rapidly proliferating cells. However, the lysis of slowly replicating cancer stem cells (CSC), which maintain neoplastic clonality, is relatively modest and the potential contribution of programmed cell death (PCD) pathways to oncolytic activity is still poorly understood. We show that the oncolytic virus ΔPK lyses CSC-enriched breast cancer and melanoma 3D spheroid cultures at low titers (0.1pfu/cell) and without resistance development and it inhibits the 3D growth potential (spheroids and agarose colonies) of melanoma and breast cancer cells. ΔPK induces calpain activation in both melanoma and breast cancer 3D cultures as determined by the loss of the p28 regulatory subunit, and 3D growth is restored by treatment with the calpain inhibitor PD150606. In melanoma, ΔPK infection also induces LC3-II accumulation and p62/SQSTM1 clearance, both markers of autophagy, and 3D growth is restored by treatment with the autophagy inhibitor chloroquine (CQ). However, expression of the autophagy-required protein Atg5 is not altered and CQ does not restore p62/SQSTM1 expression, suggesting that the CQ effect may be autophagy-independent. PD150606 restores expression of p62/SQSTM1 in ΔPK infected melanoma cultures, suggesting that calpain activation induces anti-tumor activity through p62/SQSTM1 clearance.
Collapse
|
24
|
Abstract
Oncolytic virotherapy is a new strategy to reduce tumor burden through selective virus replication in rapidly proliferating cells. Oncolytic viruses are members of at least ten virus families, each with its advantages and disadvantages. Here, I briefly review the recent advances and key challenges, as exemplified by the best-studied platforms. Recent advances include preclinical proof of feasibility, clinical evidence of tolerability and effectiveness, and the development of new strategies to improve efficacy. These include engineered tumor selectivity and expression of antitumorigenic genes that could function independently of virus replication, identification of combinatorial therapies that accelerate intratumoral virus propagation, and modification of immune responses and vascular delivery for treatment of metastatic disease. Key challenges are to select "winners" from the distinct oncolytic platforms that can stimulate anti-cancer immunity without affecting virus replication and can lyse cancer stem cells, which are most likely responsible for tumor maintenance, aggressiveness, and recurrence. Preventing the emergence of resistant tumor cells during virotherapy through the activation of multiple death pathways, the development of a better understanding of the mechanisms of cancer stem-cell lysis, and the development of more meaningful preclinical animal models are additional challenges for the next-generation of engineered viruses.
Collapse
Affiliation(s)
- Laure Aurelian
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, USA
| |
Collapse
|
25
|
Friedman GK, Raborn J, Kelly VM, Cassady KA, Markert JM, Gillespie GY. Pediatric glioma stem cells: biologic strategies for oncolytic HSV virotherapy. Front Oncol 2013; 3:28. [PMID: 23450706 PMCID: PMC3584319 DOI: 10.3389/fonc.2013.00028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 02/04/2013] [Indexed: 01/17/2023] Open
Abstract
While glioblastoma multiforme (GBM) is the most common adult malignant brain tumor, GBMs in childhood represent less than 10% of pediatric malignant brain tumors and are phenotypically and molecularly distinct from adult GBMs. Similar to adult patients, outcomes for children with high-grade gliomas (HGGs) remain poor. Furthermore, the significant morbidity and mortality yielded by pediatric GBM is compounded by neurotoxicity for the developing brain caused by current therapies. Poor outcomes have been attributed to a subpopulation of chemotherapy and radiotherapy resistant cells, termed “glioma stem cells” (GSCs), “glioma progenitor cells,” or “glioma-initiating cells,” which have the ability to initiate and maintain the tumor and to repopulate the recurring tumor after conventional therapy. Future innovative therapies for pediatric HGG must be able to eradicate these therapy-resistant GSCs. Oncolytic herpes simplex viruses (oHSV), genetically engineered to be safe for normal cells and to express diverse foreign anti-tumor therapeutic genes, have been demonstrated in preclinical studies to infect and kill GSCs and tumor cells equally while sparing normal brain cells. In this review, we discuss the unique aspects of pediatric GSCs, including markers to identify them, the microenvironment they reside in, signaling pathways that regulate them, mechanisms of cellular resistance, and approaches to target GSCs, with a focus on the promising therapeutic, genetically engineered oHSV.
Collapse
Affiliation(s)
- Gregory K Friedman
- Brain Tumor Research Program, Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Alabama at Birmingham Birmingham, AL, USA
| | | | | | | | | | | |
Collapse
|
26
|
Tobias A, Ahmed A, Moon KS, Lesniak MS. The art of gene therapy for glioma: a review of the challenging road to the bedside. J Neurol Neurosurg Psychiatry 2013; 84:213-22. [PMID: 22993449 PMCID: PMC3543505 DOI: 10.1136/jnnp-2012-302946] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Glioblastoma multiforme (GBM) is a highly invasive brain tumour that is unvaryingly fatal in humans despite even aggressive therapeutic approaches such as surgical resection followed by chemotherapy and radiotherapy. Unconventional treatment options such as gene therapy provide an intriguing option for curbing glioma related deaths. To date, gene therapy has yielded encouraging results in preclinical animal models as well as promising safety profiles in phase I clinical trials, but has failed to demonstrate significant therapeutic efficacy in phase III clinical trials. The most widely studied antiglioma gene therapy strategies are suicide gene therapy, genetic immunotherapy and oncolytic virotherapy, and we have attributed the challenging transition of these modalities into the clinic to four major roadblocks: (1) anatomical features of the central nervous system, (2) the host immune system, (3) heterogeneity and invasiveness of GBM and (4) limitations in current GBM animal models. In this review, we discuss possible ways to jump these hurdles and develop new gene therapies that may be used alone or in synergy with other modalities to provide a powerful treatment option for patients with GBM.
Collapse
Affiliation(s)
- Alex Tobias
- Brain Tumour Center, The University of Chicago, 5841 South Maryland Ave, MC 3026, Chicago, IL 60637, USA
| | | | | | | |
Collapse
|
27
|
Gatson NN, Chiocca EA, Kaur B. Anti-angiogenic gene therapy in the treatment of malignant gliomas. Neurosci Lett 2012; 527:62-70. [PMID: 22906922 DOI: 10.1016/j.neulet.2012.08.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 08/03/2012] [Indexed: 11/15/2022]
Abstract
More than four decades ago, Dr. Judah Folkman hypothesized that angiogenesis was a critical process in tumor growth. Since that time, there have been significant advances in understanding tumor biology and groundbreaking research in cancer therapy that have validated his hypothesis. However, in spite of extensive research, glioblastoma multiforme (GBM), the most common and malignant primary brain tumor, has gained little in the way of improved median survival. There have been several angiogenesis targets that have resulted in drugs that are in clinical trials or FDA approved for clinical use in several cancers. GBM is a highly angiogenic tumor and several drugs are showing promise in clinical trials with one (bevacizumab), clinically approved for use. We will review several possible angiogenic targets in GBM as well as the vector methodologies used for delivery. In addition, GBMs present several therapeutic challenges related to structure, tumor immune microenvironment and resistance to angiogenesis. To overcome these challenges will require novel approaches to improve therapeutic gene expression and vector biodistribution in the glioma.
Collapse
Affiliation(s)
- NaTosha N Gatson
- Dardinger Center for Neuro-oncology and Neurosciences, N-1017 Doan Hall, 410 W. 10th Avenue, James Cancer Hospital/Solove Research Institute and The Ohio State University Wexner Medical Center, Columbus, OH 43210-1240, USA
| | | | | |
Collapse
|
28
|
Abstract
Primary brain tumours are difficult to manage clinically due to their abilities to invade adjacent tissue and infiltrate distant neuropil. These contribute to challenges in surgical management and also limit the effectiveness of radiotherapy. Despite initial responses to chemotherapy, most tumours become chemo-resistant, leading to relapse. Recent identification and isolation of brain cancer stem cells (BCSCs) have broadened our understanding of the molecular pathogenesis and potential Achilles' heel of brain tumours. BCSCs are thought to drive and propagate the tumour and therefore present an important target for further investigations. This review explores the history of the discovery of BCSCs and the evolving concept of "cancer stem cells" in neuro-oncology. We attempt to present a balanced view on the subject and also to update the readers on the molecular biology of BCSCs. Lastly, we outline the potential strategies to target BCSCs which will translate into specific and effective therapies for brain tumours.
Collapse
|
29
|
Abstract
Cartilage is one of the very few naturally occurring avascular tissues where lack of angiogenesis is the guiding principle for its structure and function. This has attracted investigators who have sought to understand the biochemical basis for its avascular nature, hypothesising that it could be used in designing therapies for treating cancer and related malignancies in humans through antiangiogenic applications. Cartilage encompasses primarily a specialised extracellular matrix synthesised by chondrocytes that is both complex and unique as a result of the myriad molecules of which it is composed. Of these components, a few such as thrombospondin-1, chondromodulin-1, the type XVIII-derived endostatin, SPARC (secreted protein acidic and rich in cysteine) and the type II collagen-derived N-terminal propeptide (PIIBNP) have demonstrated antiangiogenic or antitumour properties in vitro and in vivo preclinical trials that involve several complicated mechanisms that are not completely understood. Thrombospondin-1, endostatin and the shark-cartilage-derived Neovastat preparation have also been investigated in human clinical trials to treat several different kinds of cancers, where, despite the tremendous success seen in preclinical trials, these molecules are yet to show success as anticancer agents. This review summarises the current state-of-the-art antiangiogenic characterisation of these molecules, highlights their most promising aspects and evaluates the future of these molecules in antiangiogenic applications.
Collapse
|
30
|
Friedman GK, Cassady KA, Beierle EA, Markert JM, Gillespie GY. Targeting pediatric cancer stem cells with oncolytic virotherapy. Pediatr Res 2012; 71:500-10. [PMID: 22430386 PMCID: PMC3607376 DOI: 10.1038/pr.2011.58] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cancer stem cells (CSCs), also termed "cancer-initiating cells" or "cancer progenitor cells," which have the ability to self-renew, proliferate, and maintain the neoplastic clone, have recently been discovered in a wide variety of pediatric tumors. These CSCs are thought to be responsible for tumorigenesis and tumor maintenance, aggressiveness, and recurrence due to inherent resistance to current treatment modalities such as chemotherapy and radiation. Oncolytic virotherapy offers a novel, targeted approach for eradicating pediatric CSCs using mechanisms of cell killing that differ from conventional therapies. Moreover, oncolytic viruses have the ability to target specific features of CSCs such as cell-surface proteins, transcription factors, and the CSC microenvironment. Through genetic engineering, a wide variety of foreign genes may be expressed by oncolytic viruses to augment the oncolytic effect. We review the current data regarding the ability of several types of oncolytic viruses (herpes simplex virus-1, adenovirus, reovirus, Seneca Valley virus, vaccinia virus, Newcastle disease virus, myxoma virus, vesicular stomatitis virus) to target and kill both CSCs and tumor cells in pediatric tumors. We highlight advantages and limitations of each virus and potential ways in which next-generation engineered viruses may target resilient CSCs.
Collapse
Affiliation(s)
- Gregory K. Friedman
- Department of Pediatrics [G.K.F., K.A.C.], University of Alabama at Birmingham, Birmingham, AL 35233
| | - Kevin A. Cassady
- Department of Pediatrics [G.K.F., K.A.C.], University of Alabama at Birmingham, Birmingham, AL 35233
| | - Elizabeth A. Beierle
- Department of Surgery [E.A.B, J.M.M., G.Y.G], University of Alabama at Birmingham, Birmingham, AL 35233
| | - James M. Markert
- Department of Surgery [E.A.B, J.M.M., G.Y.G], University of Alabama at Birmingham, Birmingham, AL 35233
| | - G. Yancey Gillespie
- Department of Surgery [E.A.B, J.M.M., G.Y.G], University of Alabama at Birmingham, Birmingham, AL 35233
| |
Collapse
|