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Ali S, Borin TF, Piranlioglu R, Ara R, Lebedyeva I, Angara K, Achyut BR, Arbab AS, Rashid MH. Changes in the tumor microenvironment and outcome for TME-targeting therapy in glioblastoma: A pilot study. PLoS One 2021; 16:e0246646. [PMID: 33544755 PMCID: PMC7864405 DOI: 10.1371/journal.pone.0246646] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/22/2021] [Indexed: 12/12/2022] Open
Abstract
Glioblastoma (GBM) is a hypervascular and aggressive primary malignant tumor of the central nervous system. Recent investigations showed that traditional therapies along with antiangiogenic therapies failed due to the development of post-therapy resistance and recurrence. Previous investigations showed that there were changes in the cellular and metabolic compositions in the tumor microenvironment (TME). It can be said that tumor cell-directed therapies are ineffective and rethinking is needed how to treat GBM. It is hypothesized that the composition of TME-associated cells will be different based on the therapy and therapeutic agents, and TME-targeting therapy will be better to decrease recurrence and improve survival. Therefore, the purpose of this study is to determine the changes in the TME in respect of T-cell population, M1 and M2 macrophage polarization status, and MDSC population following different treatments in a syngeneic model of GBM. In addition to these parameters, tumor growth and survival were also studied following different treatments. The results showed that changes in the TME-associated cells were dependent on the therapeutic agents, and the TME-targeting therapy improved the survival of the GBM bearing animals. The current GBM therapies should be revisited to add agents to prevent the accumulation of bone marrow-derived cells in the TME or to prevent the effect of immune-suppressive myeloid cells in causing alternative neovascularization, the revival of glioma stem cells, and recurrence. Instead of concurrent therapy, a sequential strategy would be better to target TME-associated cells.
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Affiliation(s)
- Sehar Ali
- Laboratory of Tumor Angiogenesis Initiative, Georgia Cancer Center, Augusta University, Augusta, Georgia, United States of America
| | - Thaiz F. Borin
- Laboratory of Tumor Angiogenesis Initiative, Georgia Cancer Center, Augusta University, Augusta, Georgia, United States of America
| | - Raziye Piranlioglu
- Laboratory of Tumor Angiogenesis Initiative, Georgia Cancer Center, Augusta University, Augusta, Georgia, United States of America
| | - Roxan Ara
- Laboratory of Tumor Angiogenesis Initiative, Georgia Cancer Center, Augusta University, Augusta, Georgia, United States of America
| | - Iryna Lebedyeva
- Department of Chemistry and Physics, Augusta University, Augusta, Georgia, United States of America
| | - Kartik Angara
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, Michigan, United States of America
| | - Bhagelu R. Achyut
- Winship Cancer Institute, Emory University, Atlanta, Georgia, United States of America
| | - Ali Syed Arbab
- Laboratory of Tumor Angiogenesis Initiative, Georgia Cancer Center, Augusta University, Augusta, Georgia, United States of America
- * E-mail: (ASA); (MHR)
| | - Mohammad H. Rashid
- Laboratory of Tumor Angiogenesis Initiative, Georgia Cancer Center, Augusta University, Augusta, Georgia, United States of America
- Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
- * E-mail: (ASA); (MHR)
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Nery de Albuquerque Rego G, da Hora Alves A, Penteado Nucci M, Bustamante Mamani J, Anselmo de Oliveira F, Gamarra LF. Antiangiogenic Targets for Glioblastoma Therapy from a Pre-Clinical Approach, Using Nanoformulations. Int J Mol Sci 2020; 21:ijms21124490. [PMID: 32599834 PMCID: PMC7349965 DOI: 10.3390/ijms21124490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/12/2020] [Accepted: 06/18/2020] [Indexed: 12/13/2022] Open
Abstract
Glioblastoma (GBM) is the most aggressive tumor type whose resistance to conventional treatment is mediated, in part, by the angiogenic process. New treatments involving the application of nanoformulations composed of encapsulated drugs coupled to peptide motifs that direct drugs to specific targets triggered in angiogenesis have been developed to reach and modulate different phases of this process. We performed a systematic review with the search criterion (Glioblastoma OR Glioma) AND (Therapy OR Therapeutic) AND (Nanoparticle) AND (Antiangiogenic OR Angiogenesis OR Anti-angiogenic) in Pubmed, Scopus, and Cochrane databases, in which 312 articles were identified; of these, only 27 articles were included after selection and analysis of eligibility according to the inclusion and exclusion criteria. The data of the articles were analyzed in five contexts: the characteristics of the tumor cells; the animal models used to induce GBM for antiangiogenic treatment; the composition of nanoformulations and their physical and chemical characteristics; the therapeutic anti-angiogenic process; and methods for assessing the effects on antiangiogenic markers caused by therapies. The articles included in the review were heterogeneous and varied in practically all aspects related to nanoformulations and models. However, there was slight variance in the antiangiogenic effect analysis. CD31 was extensively used as a marker, which does not provide a view of the effects on the most diverse aspects involved in angiogenesis. Therefore, the present review highlighted the need for standardization between the different approaches of antiangiogenic therapy for the GBM model that allows a more effective meta-analysis and that helps in future translational studies.
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Affiliation(s)
| | - Arielly da Hora Alves
- Hospital Israelita Albert Einstein, São Paulo 05652-900, Brazil; (G.N.d.A.R.); (A.d.H.A.); (J.B.M.); (F.A.d.O.)
| | - Mariana Penteado Nucci
- LIM44-Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo 01246-903, Brazil;
| | - Javier Bustamante Mamani
- Hospital Israelita Albert Einstein, São Paulo 05652-900, Brazil; (G.N.d.A.R.); (A.d.H.A.); (J.B.M.); (F.A.d.O.)
| | | | - Lionel Fernel Gamarra
- Hospital Israelita Albert Einstein, São Paulo 05652-900, Brazil; (G.N.d.A.R.); (A.d.H.A.); (J.B.M.); (F.A.d.O.)
- Correspondence: ; Tel.: +55-11-2151-0243
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Liu H, Zhang J, Chen X, Du XS, Zhang JL, Liu G, Zhang WG. Application of iron oxide nanoparticles in glioma imaging and therapy: from bench to bedside. NANOSCALE 2016; 8:7808-7826. [PMID: 27029509 DOI: 10.1039/c6nr00147e] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Gliomas are the most common primary brain tumors and have a very dismal prognosis. However, recent advancements in nanomedicine and nanotechnology provide opportunities for personalized treatment regimens to improve the poor prognosis of patients suffering from glioma. This comprehensive review starts with an outline of the current status facing glioma. It then provides an overview of the state-of-the-art applications of iron oxide nanoparticles (IONPs) to glioma diagnostics and therapeutics, including MR contrast enhancement, drug delivery, cell labeling and tracking, magnetic hyperthermia treatment and magnetic particle imaging. It also addresses current challenges associated with the biological barriers and IONP design with an emphasis on recent advances and innovative approaches for glioma targeting strategies. Opportunities for future development are highlighted.
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Affiliation(s)
- Heng Liu
- Department of Radiology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, 400042, China and State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China.
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China. and Sichuan Key Laboratory of Medical Imaging, Affiliated Hospital of North Sichuan Medical College, North Sichuan Medical College, Nanchong 637007, China
| | - Xiao Chen
- Department of Radiology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Xue-Song Du
- Department of Radiology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Jin-Long Zhang
- Department of Radiology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Gang Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China.
| | - Wei-Guo Zhang
- Department of Radiology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, 400042, China and The State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, 400042, China.
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4
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Hou Y, Wu Y, Farooq SM, Guan X, Wang S, Liu Y, Oblak JJ, Holcomb J, Jiang Y, Strieter RM, Lasley RD, Arbab AS, Sun F, Li C, Yang Z. A critical role of CXCR2 PDZ-mediated interactions in endothelial progenitor cell homing and angiogenesis. Stem Cell Res 2015; 14:133-43. [PMID: 25622052 DOI: 10.1016/j.scr.2014.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 11/14/2014] [Accepted: 12/04/2014] [Indexed: 10/24/2022] Open
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Yan Y, Sart S, Calixto Bejarano F, Muroski ME, Strouse GF, Grant SC, Li Y. Cryopreservation of embryonic stem cell-derived multicellular neural aggregates labeled with micron-sized particles of iron oxide for magnetic resonance imaging. Biotechnol Prog 2015; 31:510-21. [PMID: 25905549 DOI: 10.1002/btpr.2049] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 12/14/2014] [Indexed: 12/19/2022]
Abstract
Magnetic resonance imaging (MRI) provides an effective approach to track labeled pluripotent stem cell (PSC)-derived neural progenitor cells (NPCs) for neurological disorder treatments after cell labeling with a contrast agent, such as an iron oxide derivative. Cryopreservation of pre-labeled neural cells, especially in three-dimensional (3D) structure, can provide a uniform cell population and preserve the stem cell niche for the subsequent applications. In this study, the effects of cryopreservation on PSC-derived multicellular NPC aggregates labeled with micron-sized particles of iron oxide (MPIO) were investigated. These NPC aggregates were labeled prior to cryopreservation because labeling thawed cells can be limited by inefficient intracellular uptake, variations in labeling efficiency, and increased culture time before use, minimizing their translation to clinical settings. The results indicated that intracellular MPIO incorporation was retained after cryopreservation (70-80% labeling efficiency), and MPIO labeling had little adverse effects on cell recovery, proliferation, cytotoxicity and neural lineage commitment post-cryopreservation. MRI analysis showed comparable detectability for the MPIO-labeled cells before and after cryopreservation indicated by T2 and T2* relaxation rates. Cryopreserving MPIO-labeled 3D multicellular NPC aggregates can be applied in in vivo cell tracking studies and lead to more rapid translation from preservation to clinical implementation.
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Affiliation(s)
- Yuanwei Yan
- Dept. of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL
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Chen C, Yu H, Xia R, Wang L, Ai H, Liu S, Xu Z, Xiao X, Gao F. Magnetic Resonance Tracking of Endothelial Progenitor Cells Labeled with Alkyl-Polyethylenimine 2 kDa/Superparamagnetic Iron Oxide in a Mouse Lung Carcinoma Xenograft Model. Mol Imaging 2014; 13. [PMID: 25248646 DOI: 10.2310/7290.2014.00030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Cong Chen
- From the Department of Radiology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; and Radiation Treatment Center, 100 Hospital of PLA, Suzhou, Jiangsu Province, China
| | - Hong Yu
- From the Department of Radiology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; and Radiation Treatment Center, 100 Hospital of PLA, Suzhou, Jiangsu Province, China
| | - Rui Xia
- From the Department of Radiology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; and Radiation Treatment Center, 100 Hospital of PLA, Suzhou, Jiangsu Province, China
| | - Lei Wang
- From the Department of Radiology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; and Radiation Treatment Center, 100 Hospital of PLA, Suzhou, Jiangsu Province, China
| | - Hua Ai
- From the Department of Radiology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; and Radiation Treatment Center, 100 Hospital of PLA, Suzhou, Jiangsu Province, China
| | - Shiyuan Liu
- From the Department of Radiology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; and Radiation Treatment Center, 100 Hospital of PLA, Suzhou, Jiangsu Province, China
| | - Zhiming Xu
- From the Department of Radiology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; and Radiation Treatment Center, 100 Hospital of PLA, Suzhou, Jiangsu Province, China
| | - Xiangsheng Xiao
- From the Department of Radiology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; and Radiation Treatment Center, 100 Hospital of PLA, Suzhou, Jiangsu Province, China
| | - Fabao Gao
- From the Department of Radiology, Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; and Radiation Treatment Center, 100 Hospital of PLA, Suzhou, Jiangsu Province, China
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Wang L, Chen L, Wang Q, Wang L, Wang H, Shen Y, Li X, Fu Y, Shen Y, Yu Y. Circulating endothelial progenitor cells are involved in VEGFR-2-related endothelial differentiation in glioma. Oncol Rep 2014; 32:2007-14. [PMID: 25189411 DOI: 10.3892/or.2014.3467] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 08/19/2014] [Indexed: 11/05/2022] Open
Abstract
Endothelial progenitor cells (EPCs) play important roles in maintaining endothelial integrity and tumor vascularization. However, the differentiation of EPCs in the neoangiogenesis of gliomas has not yet been fully elucidated. The purpose in this study was to investigate the profile of EPC differentiation in rat C6 glioma using magnetic resonance imaging (MRI), a non-invasive monitoring assay. To achieve this goal, we isolated EPCs from rat bone marrow and identified them by detecting CD34, CD133, and VEGFR-2, the markers of EPCs. Coexpression of Ac-LDL and UEA-1 in EPCs was also determined. To dynamically monitor the migration of circulating cells, the EPCs were labeled with ultrasmall superparamagnetic iron oxide (USPIO) and injected by tail vein into rats bearing C6 glioma. MRI was performed at 24, 48, and 96 h after injection. The distribution and differentiation of EPCs were confirmed by histology. We found that the USPIO-labeled EPCs appeared at the tumor periphery where a large number of CD105-positive cells appeared at 24 h after injection by using MRI scanning. Ninety-six hours after injection, immunohistochemistry and Prussian blue staining were used to observe the labeled EPCs in the tumor tissue. We found that many of the labeled EPCs were overlapped with VEGFR-2-positive endothelial cells, but not CD105- or CD34-positive cells. These results suggest that EPCs can cross the blood-brain barrier from peripheral blood and home to tumors, where they differentiate into endothelial cells, including VEGFR-2-positive endothelial cells. MRI is a useful method for dynamically tracking the migration of USPIO-labeled EPCs.
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Affiliation(s)
- Le Wang
- Department of Radiology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Lu Chen
- Biopharmaceutical Research Institute, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Qianfeng Wang
- Biopharmaceutical Research Institute, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Lijuan Wang
- Department of Radiology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Haibao Wang
- Department of Radiology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Yujun Shen
- Biopharmaceutical Research Institute, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Xiaohu Li
- Department of Radiology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Yu Fu
- Biopharmaceutical Research Institute, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yuxian Shen
- Biopharmaceutical Research Institute, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yongqiang Yu
- Department of Radiology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui 230022, P.R. China
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Achyut BR, Varma NRS, Arbab AS. Application of Umbilical Cord Blood Derived Stem Cells in Diseases of the Nervous System. ACTA ACUST UNITED AC 2014; 4. [PMID: 25599002 DOI: 10.4172/2157-7633.1000202] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Umbilical cord blood (UCB) derived multipotent stem cells are capable of giving rise hematopoietic, epithelial, endothelial and neural progenitor cells. Thus suggested to significantly improve graft-versus-host disease and represent the distinctive therapeutic option for several malignant and non-malignant diseases. Recent advances in strategies to isolate, expand and shorten the timing of UCB stem cells engraftment have tremendously improved the efficacy of transplantations. Nervous system has limited regenerative potential in disease conditions such as cancer, neurodegeneration, stroke, and several neural injuries. This review focuses on application of UCB derived stem/progenitor cells in aforementioned pathological conditions. We have discussed the possible attempts to make use of UCB therapies to generate neural cells and tissues with developmental and functional similarities to neuronal cells. In addition, emerging applications of UCB derived AC133+ (CD133+) endothelial progenitor cells (EPCs) as imaging probe, regenerative agent, and gene delivery vehicle are mentioned that will further improve the understanding of use of UCB cells in therapeutic modalities. However, safe and effective protocols for cell transplantations are still required for therapeutic efficacy.
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Affiliation(s)
- Bhagelu R Achyut
- Tumor Angiogenesis Lab, Cancer Center, Georgia Regents University, Augusta, GA 30912, USA
| | | | - Ali S Arbab
- Tumor Angiogenesis Lab, Cancer Center, Georgia Regents University, Augusta, GA 30912, USA
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Varma NRS, Barton KN, Janic B, Shankar A, Iskander ASM, Ali MM, Arbab AS. Monitoring adenoviral based gene delivery in rat glioma by molecular imaging. World J Clin Oncol 2013; 4:91-101. [PMID: 24926429 PMCID: PMC4053711 DOI: 10.5306/wjco.v4.i4.91] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 05/21/2013] [Accepted: 07/11/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine whether endothelial progenitor cells (EPCs) can be used as delivery vehicle for adenoviral vectors and imaging probes for gene therapy in glioblastoma.
METHODS: To use cord blood derived EPCs as delivery vehicle for adenoviral vectors and imaging probes for glioma gene therapy, a rat model of human glioma was made by implanting U251 cells orthotopically. EPCs were transfected with an adenovirus (AD5/carrying hNIS gene) and labeled with iron oxide and inoculated them directly into the tumor 14 d following implantation of U251 cells. Magnetic resonance imaging (MRI) was used to in vivo track the migration of EPCs in the tumor. The expression of gene products was determined by in vivo Tc-99m single photon emission computed tomography (SPECT). The findings were validated with immunohistochemistry (IHC).
RESULTS: EPCs were successfully transfected with the adenoviral vectors carrying hNIS which was proved by significantly (P < 0.05) higher uptake of Tc-99m in transfected cells. Viability of EPCs following transfection and iron labeling was not altered. In vivo imaging showed the presence of iron positive cells and the expression of transgene (hNIS) product on MRI and SPECT, respectively, all over the tumors following administration of transfected and iron labeled EPCs in the tumors. IHC confirmed the distribution of EPC around the tumor away from the injection site and also showed transgene expression in the tumor. The results indicated the EPCs’ ability to deliver adenoviral vectors into the glioma upon intratumor injection.
CONCLUSION: EPCs can be used as vehicle to deliver adenoviral vector to glioma and also act as imaging probe at the same time.
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Iskander A, Knight RA, Zhang ZG, Ewing JR, Shankar A, Varma NRS, Bagher-Ebadian H, Ali MM, Arbab AS, Janic B. Intravenous administration of human umbilical cord blood-derived AC133+ endothelial progenitor cells in rat stroke model reduces infarct volume: magnetic resonance imaging and histological findings. Stem Cells Transl Med 2013; 2:703-14. [PMID: 23934909 DOI: 10.5966/sctm.2013-0066] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Endothelial progenitor cells (EPCs) hold enormous therapeutic potential for ischemic vascular diseases. Previous studies have indicated that stem/progenitor cells derived from human umbilical cord blood (hUCB) improve functional recovery in stroke models. Here, we examined the effect of hUCB AC133+ EPCs on stroke development and resolution in a middle cerebral artery occlusion (MCAo) rat model. Since the success of cell therapies strongly depends on the ability to monitor in vivo the migration of transplanted cells, we also assessed the capacity of magnetic resonance imaging (MRI) to track in vivo the magnetically labeled cells that were administered. Animals were subjected to transient MCAo and 24 hours later injected intravenously with 10(7) hUCB AC133+ EPCs. MRI performed at days 1, 7, and 14 after the insult showed accumulation of transplanted cells in stroke-affected hemispheres and revealed that stroke volume decreased at a significantly higher rate in cell-treated animals. Immunohistochemistry analysis of brain tissues localized the administered cells in the stroke-affected hemispheres only and indicated that these cells may have significantly affected the magnitude of endogenous proliferation, angiogenesis, and neurogenesis. We conclude that transplanted cells selectively migrated to the ischemic brain parenchyma, where they exerted a therapeutic effect on the extent of tissue damage, regeneration, and time course of stroke resolution.
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Affiliation(s)
- Asm Iskander
- Department of Radiology, Henry Ford Hospital, Detroit, MI, USA
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Varma NRS, Shankar A, Iskander A, Janic B, Borin TF, Ali MM, Arbab AS. Differential biodistribution of intravenously administered endothelial progenitor and cytotoxic T-cells in rat bearing orthotopic human glioma. BMC Med Imaging 2013; 13:17. [PMID: 23758888 PMCID: PMC3706264 DOI: 10.1186/1471-2342-13-17] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 05/29/2013] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND A major challenge in the development of cell based therapies for glioma is to deliver optimal number of cells (therapeutic dose) to the tumor. Imaging tools such as magnetic resonance imaging (MRI), optical imaging, positron emission tomography (PET) and single-photon emission computed tomography (SPECT) has been used in cell tracking and/or biodistribution studies. In this study, we evaluate the dynamic biodistribution of systemic injected labeled cells [human cord blood derived endothelial progenitor cells (EPCs) and cytotoxic T-cells (CTLs)] in rat glioma model with in vivo SPECT imaging. METHODS Human cord blood EPCs, T-cells and CD14⁺ cells (monocytes/dendritic cells) were isolated using the MidiMACS system. CD14⁺ cells were converted to dendritic cells (DC) and also primed with U251 tumor cell line lysate. T-cells were co-cultured with irradiated primed DCs at 10:1 ratio to make CTLs. Both EPCs and CTLs were labeled with In-111-oxine at 37°C in serum free DMEM media. Glioma bearing animals were randomly assigned into three groups. In-111 labeled cells or In-111 oxine alone were injected through tail vein and SPECT imaging was performed on day 0, 1, and 3. In-111 oxine activity in various organs and tumor area was determined. Histochemical analysis was performed to further confirm the migration and homing of injected cells at the tumor site. RESULTS EPCs and CTLs showed an In-111 labeling efficiency of 87.06 ± 7.75% and 70.8 ± 12.9% respectively. Initially cell migration was observed in lung following inravenous administration of In-111 labeled cells and decreased on day 1 and 3, which indicate re-distribution of labeled cells from lung to other organs. Relatively higher In-111 oxine activity was observed in tumor areas at 24 hours in animals received In-111 labeled cells (EPCs or CTLs). Histiological analysis revealed iron positive cells in and around the tumor area in animals that received labeled cells (CTLs and EPCs). CONCLUSION We observed differential biodistribution of In-111-oxine labeled EPCs and CTLs in different organs and intracranial glioma. This study indicates In-111 oxine based SPECT imaging is an effective tool to study the biodistribution of therapeutically important cells.
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Affiliation(s)
- Nadimpalli Ravi S Varma
- Cellular and Molecular Imaging Laboratory, Radiology, Henry Ford Hospital, Detroit, MI, USA.
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