1
|
Mohd Satar A, Othman FA, Tan SC. Biomaterial application strategies to enhance stem cell-based therapy for ischemic stroke. World J Stem Cells 2022; 14:851-867. [PMID: 36619694 PMCID: PMC9813837 DOI: 10.4252/wjsc.v14.i12.851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/29/2022] [Accepted: 12/06/2022] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Ischemic stroke is a condition in which an occluded blood vessel interrupts blood flow to the brain and causes irreversible neuronal cell death. Transplantation of regenerative stem cells has been proposed as a novel therapy to restore damaged neural circuitry after ischemic stroke attack. However, limitations such as low cell survival rates after transplantation remain significant challenges to stem cell-based therapy for ischemic stroke in the clinical setting. In order to enhance the therapeutic efficacy of transplanted stem cells, several biomaterials have been developed to provide a supportable cellular microenvironment or functional modification on the stem cells to optimize their reparative roles in injured tissues or organs.
AIM To discuss state-of-the-art functional biomaterials that could enhance the therapeutic potential of stem cell-based treatment for ischemic stroke and provide detailed insights into the mechanisms underlying these biomaterial approaches.
METHODS The PubMed, Science Direct and Scopus literature databases were searched using the keywords of “biomaterial” and “ischemic stroke”. All topically-relevant articles were then screened to identify those with focused relevance to in vivo, in vitro and clinical studies related to “stem cells” OR “progenitor cells” OR “undifferentiated cells” published in English during the years of 2011 to 2022. The systematic search was conducted up to September 30, 2022.
RESULTS A total of 19 articles matched all the inclusion criteria. The data contained within this collection of papers comprehensively represented 19 types of biomaterials applied on seven different types of stem/progenitor cells, namely mesenchymal stem cells, neural stem cells, induced pluripotent stem cells, neural progenitor cells, endothelial progenitor cells, neuroepithelial progenitor cells, and neuroblasts. The potential major benefits gained from the application of biomaterials in stem cell-based therapy were noted as induction of structural and functional modifications, increased stem cell retention rate in the hostile ischemic microenvironment, and promoting the secretion of important cytokines for reparative mechanisms.
CONCLUSION Biomaterials have a relatively high potential for enhancing stem cell therapy. Nonetheless, there is a scarcity of evidence from human clinical studies for the efficacy of this bioengineered cell therapy, highlighting that it is still too early to draw a definitive conclusion on efficacy and safety for patient usage. Future in-depth clinical investigations are necessary to realize translation of this therapy into a more conscientious and judicious evidence-based therapy for clinical application.
Collapse
Affiliation(s)
- Asmaa’ Mohd Satar
- School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian, Kelantan 16150, Malaysia
| | - Farah Amna Othman
- School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian, Kelantan 16150, Malaysia
| | - Suat Cheng Tan
- School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian, Kelantan 16150, Malaysia
| |
Collapse
|
2
|
An L, Tao Q, Wu Y, Wang N, Liu Y, Wang F, Zhang L, Shi A, Zhou X, Yu S, Zhang J. Synthesis of SPIO Nanoparticles and the Subsequent Applications in Stem Cell Labeling for Parkinson's Disease. NANOSCALE RESEARCH LETTERS 2021; 16:107. [PMID: 34128153 PMCID: PMC8203769 DOI: 10.1186/s11671-021-03540-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
Parkinson's disease (PD) is characterized by the progressive loss of dopaminergic neurons in the midbrain, and the stem cell transplantation method provides a promising strategy for the treatment. In these studies, tracking the biological behaviors of the transplanted cells in vivo is essential for a basic understanding of stem cell function and evaluation of clinical effectiveness. In the present study, we developed a novel ultrasmall superparamagnetic iron oxide nanoparticles coating with the polyacrylic acid (PAA) and methoxypolyethylene glycol amine (PEG) by thermal decomposition method and a two-step modification. The USPIO-PAA/PEG NPs have a uniform diameter of 10.07 ± 0.55 nm and proper absorption peak of the corresponding ligands, as showed by TEM and FTIR. MTT showed that the survival of cells incubated with USPIO-PAA/PEG NPs remained above 96%. The synthesized USPIO-PAA/PEG had a good relaxation rate of 84.65 s-1 Mm-1, indicating that they could be efficiently uptake and traced by MRI. Furthermore, the primary human adipose-derived stem cells (HADSCs) were characterized, labeled with USPIO-PAA/PEG and transplanted into the striatum of 6-hydroxydopamine (6-OHDA)-induced PD rat models. The labeled cells could be traced by MRI for up to 3 weeks after the transplantation surgery; moreover, transplantation with the labeled HADSCs significantly attenuated apomorphine-induced rotations in PD models and increased the number of the dopaminergic neurons in the substania nigra. Overall, the development of USPIO-PAA/PEG NPs provides a promising tool for in vivo tracing technique of cell therapy and identifies a novel strategy to track stem cells with therapeutic potential in PD.
Collapse
Affiliation(s)
- Li An
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88 Keling Road, Suzhou New District, Suzhou, 215163, China
| | - Qing Tao
- Department of Radiology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yue Wu
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88 Keling Road, Suzhou New District, Suzhou, 215163, China
| | - Nana Wang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88 Keling Road, Suzhou New District, Suzhou, 215163, China
| | - Yan Liu
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88 Keling Road, Suzhou New District, Suzhou, 215163, China
- Zhengzhou Institute of Engineering and Technology Affiliated with SIBET, Zhengzhou, 450001, China
| | - Feifei Wang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88 Keling Road, Suzhou New District, Suzhou, 215163, China
- Zhengzhou Institute of Engineering and Technology Affiliated with SIBET, Zhengzhou, 450001, China
| | - Lixing Zhang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88 Keling Road, Suzhou New District, Suzhou, 215163, China
- Zhengzhou Institute of Engineering and Technology Affiliated with SIBET, Zhengzhou, 450001, China
| | - Aihua Shi
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88 Keling Road, Suzhou New District, Suzhou, 215163, China
- Zhengzhou Institute of Engineering and Technology Affiliated with SIBET, Zhengzhou, 450001, China
| | - Xiumin Zhou
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Shuang Yu
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88 Keling Road, Suzhou New District, Suzhou, 215163, China.
| | - Jingzhong Zhang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No. 88 Keling Road, Suzhou New District, Suzhou, 215163, China.
- Zhengzhou Institute of Engineering and Technology Affiliated with SIBET, Zhengzhou, 450001, China.
- Tianjin Guokeyigong Science and Technology Development Company Limited, Tianjin, 300399, China.
| |
Collapse
|
3
|
Zhang Y, Zhang H, Huang D, Tan B, Zhang C, Deng Z. Naphthalene-facilitated self-assembly of a Gd-chelate as a novel T2 MRI contrast agent for visualization of stem cell transplants. J Mater Chem B 2021; 9:5729-5737. [PMID: 34231635 DOI: 10.1039/d1tb00424g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Naphthalene is coupled with DOTA via a peptide sequence to yield an amphipathic MRI probe Nap-CFGKTG-DOTA-Gd (Nap-Gd) that can self-assemble into nanofibers. Incubation of NSCs, hMSCs and L929 cells in the presence of Nap-Gd in the μM level can introduce a significant amount of Nap-Gd into the cells as nanoclusters or nanofibers. The resultant intracellular Gd content is 10-60 times that achieved by incubation with Dotarem at the same concentration. The labelled cells exhibit a significant hyperintensive effect under T1-weighted MRI and a significant hypointensive effect under T2-weighted MRI. The hypointensive effect is more persistent than the hyperintensive effect, which allows in vivo tracking of labelled hMSCs for over 12 days under T2-weighted MRI. A comprehensive interpretation of the MRI signal intensity and the associated relaxation times reveals the structure-function relationship between the binding status of Nap-Gd in cells (structure) and the magnetic relaxation processes (function) toward a full understanding of the observed hyperintensive and hypointensive effects.
Collapse
Affiliation(s)
- Yanhui Zhang
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, P. R. China. and CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
| | - Hailu Zhang
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
| | - Dehua Huang
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
| | - Bo Tan
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
| | - Chengxing Zhang
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
| | - Zongwu Deng
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, P. R. China. and CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
| |
Collapse
|
4
|
Zhang Y, Huang D, Zhang C, Meng J, Tan B, Deng Z. IQF characterization of a cathepsin B-responsive nanoprobe for report of differentiation of HL60 cells into macrophages. RSC Adv 2021; 11:16522-16529. [PMID: 35479137 PMCID: PMC9031808 DOI: 10.1039/d1ra01549d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/18/2021] [Indexed: 12/14/2022] Open
Abstract
Tracking of in vivo fates of exogenous cell transplants in terms of viability, migration, directional differentiation and function delivery by a suitable method of medical imaging is of great significance in the development and application of various cell therapies. In this contribution directional differentiation of HL60 cells into macrophages and granulocytes, and a difference in the associated expression level of cathepsin B (Cat B) among the parent and daughter cells is used as a model to guide and evaluate the development of a Cat B-responsive Abz-FRFK-Dnp@PLGA nanoprobe for an optical report of the differentiation process. A well-documented internally quenched fluorescence (IQF) pair coupled with a peptide substrate FRFK of Cat B was synthesized and imbedded in PLGA to form the nanoprobe. The nanoprobe is resistant to leakage when dispersed in water for 10 days. Degradation of the nanoprobe is dominated by Cat B. HL60 cells were then labelled with the Abz-FRFK-Dnp@PLGA nanoprobe to track the differentiation process. Differentiation of labelled HL60 cells into macrophages exhibited a significantly higher fluorescence relative to the granulocytes or the labelled parent cells. The fluorescence difference allows the differentiation process to be followed. The established characterization and assessment procedure is to be used for the development and evaluation of nanoprobes for other imaging modalities. A Cat B-responsive Abz-FRFK-Dnp@PLGA nanoprobe for an optical report of the differentiation of HL60 cells into macrophages.![]()
Collapse
Affiliation(s)
- Yanhui Zhang
- School of Nano-Tech and Nano-Bionics
- University of Science and Technology of China
- Hefei
- P. R. China
- CAS Key Laboratory of Nano-Bio Interface
| | - Dehua Huang
- CAS Key Laboratory of Nano-Bio Interface
- Suzhou Institute of Nano-tech and Nano-bionics
- Chinese Academy of Sciences
- Suzhou
- P. R. China
| | - Chengxing Zhang
- CAS Key Laboratory of Nano-Bio Interface
- Suzhou Institute of Nano-tech and Nano-bionics
- Chinese Academy of Sciences
- Suzhou
- P. R. China
| | - Jingjing Meng
- CAS Key Laboratory of Nano-Bio Interface
- Suzhou Institute of Nano-tech and Nano-bionics
- Chinese Academy of Sciences
- Suzhou
- P. R. China
| | - Bo Tan
- CAS Key Laboratory of Nano-Bio Interface
- Suzhou Institute of Nano-tech and Nano-bionics
- Chinese Academy of Sciences
- Suzhou
- P. R. China
| | - Zongwu Deng
- School of Nano-Tech and Nano-Bionics
- University of Science and Technology of China
- Hefei
- P. R. China
- CAS Key Laboratory of Nano-Bio Interface
| |
Collapse
|
5
|
Jiang L, Li R, Tang H, Zhong J, Sun H, Tang W, Wang H, Zhu J. MRI Tracking of iPS Cells-Induced Neural Stem Cells in Traumatic Brain Injury Rats. Cell Transplant 2018; 28:747-755. [PMID: 30574806 PMCID: PMC6686439 DOI: 10.1177/0963689718819994] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Induced pluripotent stem cells (iPS cells) are promising cell source for stem cell replacement strategy applied to brain injury caused by traumatic brain injury (TBI) or stroke. Neural stem cell (NSCs) derived from iPS cells could aid the reconstruction of brain tissue and the restoration of brain function. However, tracing the fate of iPS cells in the host brain is still a challenge. In our study, iPS cells were derived from skin fibroblasts using the four classic factors Oct4, Sox2, Myc, and Klf4. These iPS cells were then induced to differentiate into NSCs, which were incubated with superparamagnetic iron oxides (SPIOs) in vitro. Next, 30 TBI rat models were prepared and divided into three groups (n = 10). One week after brain injury, group A&B rats received implantation of NSCs (labeled with SPIOs), while group C rats received implantation of non-labeled NSCs. After cell implantation, all rats underwent T2*-weighted magnetic resonance imaging (MRI) scan at day 1, and 1 week to 4 weeks, to track the distribution of NSCs in rats' brains. One month after cell implantation, manganese-enhanced MRI (ME-MRI) scan was performed for all rats. In group B, diltiazem was infused during the ME-MRI scan period. We found that (1) iPS cells were successfully derived from skin fibroblasts using the four classic factors Oct4, Sox2, Myc, and Klf4, expressing typical antigens including SSEA4, Oct4, Sox2, and Nanog; (2) iPS cells were induced to differentiate into NSCs, which could express Nestin and differentiate into neural cells and glial cells; (3) NSCs were incubated with SPIOs overnight, and Prussian blue staining showed intracellular particles; (4) after cell implantation, T2*-weighted MRI scan showed these implanted NSCs could migrate to the injury area in chronological order; (5) the subsequent ME-MRI scan detected NSCs function, which could be blocked by diltiazem. In conclusion, using an in vivo MRI tracking technique to trace the fate of iPS cells-induced NSCs in host brain is feasible.
Collapse
Affiliation(s)
- Lili Jiang
- 1 Department of Nursing, Huashan Hospital, Fudan University, Shanghai, China
| | - Ronggang Li
- 2 Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Hailiang Tang
- 2 Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Junjie Zhong
- 2 Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Huaping Sun
- 3 Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Weijun Tang
- 3 Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Huijuan Wang
- 1 Department of Nursing, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianhong Zhu
- 2 Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| |
Collapse
|
6
|
Orsini G, Pagella P, Putignano A, Mitsiadis TA. Novel Biological and Technological Platforms for Dental Clinical Use. Front Physiol 2018; 9:1102. [PMID: 30135661 PMCID: PMC6092501 DOI: 10.3389/fphys.2018.01102] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 07/23/2018] [Indexed: 12/27/2022] Open
Abstract
Human teeth have a limited capacity to regenerate and thus biological reconstruction of damaged or lost dental tissues remains a significant challange in modern dentistry. Recent efforts focus on alternative therapeutic approaches for partial or whole tooth regeneration that complement traditional dental treatments using sophisticated materials and dental implants. These multidisciplinary approaches are based on the combination of stem cells with advanced tissue engineer products and computing technology, and they hold great promise for future applications in dentistry. The administration to patients of dynamic biological agents composed by stem cells and scaffolds will certainly increase the regenerative capacity of dental pathological tissues. The design of innovative materials for tissue restoration, diagnostics, imaging, and targeted pharmaceutical treatment will significantly improve the quality of dental care and will have a major societal impact. This review depicts the current challenges in dentistry and describes the possibilities for novel and succesful therapeutic applications in the near future.
Collapse
Affiliation(s)
- Giovanna Orsini
- Orofacial Development and Regeneration, Institute of Oral Biology, Center of Dental Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
- Department of Clinical Sciences and Stomatology, Marche Polytechnic University, Ancona, Italy
| | - Pierfrancesco Pagella
- Orofacial Development and Regeneration, Institute of Oral Biology, Center of Dental Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Angelo Putignano
- Department of Clinical Sciences and Stomatology, Marche Polytechnic University, Ancona, Italy
| | - Thimios A. Mitsiadis
- Orofacial Development and Regeneration, Institute of Oral Biology, Center of Dental Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| |
Collapse
|
7
|
Zhang F, Duan X, Lu L, Zhang X, Chen M, Mao J, Cao M, Shen J. In Vivo Long-Term Tracking of Neural Stem Cells Transplanted into an Acute Ischemic Stroke model with Reporter Gene-Based Bimodal MR and Optical Imaging. Cell Transplant 2018; 26:1648-1662. [PMID: 29251112 PMCID: PMC5753979 DOI: 10.1177/0963689717722560] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Transplantation of neural stem cells (NSCs) is emerging as a new therapeutic approach for stroke. Real-time imaging of transplanted NSCs is essential for successful cell delivery, safety monitoring, tracking cell fate and function, and understanding the interactions of transplanted cells with the host environment. Magnetic resonance imaging (MRI) of magnetic nanoparticle-labeled cells has been the most widely used means to track stem cells in vivo. Nevertheless, it does not allow for the reliable discrimination between live and dead cells. Reporter gene-based MRI was considered as an alternative strategy to overcome this shortcoming. In this work, a class of lentiviral vector-encoding ferritin heavy chain (FTH) and enhanced green fluorescent protein (EGFP) was constructed to deliver reporter genes into NSCs. After these transgenic NSCs were transplanted into the contralateral hemisphere of rats with acute ischemic stroke, MRI and fluorescence imaging (FLI) were performed in vivo for tracking the fate of transplanted cells over a long period of 6 wk. The results demonstrated that the FTH and EGFP can be effectively and safely delivered to NSCs via the designed lentiviral vector. The distribution and migration of grafted stem cells could be monitored by bimodal MRI and FLI. FTH can be used as a robust MRI reporter for reliable reporting of the short-term viability of cell grafts, whereas its capacity for tracking the long-term viability of stem cells remains dependent on several confounding factors such as cell death and the concomitant reactive inflammation.
Collapse
Affiliation(s)
- Fang Zhang
- 1 Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xiaohui Duan
- 1 Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Liejing Lu
- 1 Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xiang Zhang
- 1 Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Meiwei Chen
- 1 Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Jiaji Mao
- 1 Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Minghui Cao
- 1 Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Jun Shen
- 1 Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| |
Collapse
|
8
|
Zhang P, Zhang Y, Li B, Zhang H, Lin H, Deng Z, Tan B. Cell-assembled nanoclusters of MSC-targeting Gd-DOTA-peptide as a T 2 contrast agent for MRI cell tracking. J Pept Sci 2018; 24:e3077. [PMID: 29582508 DOI: 10.1002/psc.3077] [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: 09/18/2017] [Revised: 02/08/2018] [Accepted: 02/25/2018] [Indexed: 12/28/2022]
Abstract
A cyclic peptide CC9 that targets cell membrane of mesenchymal stem cells (MSCs) is coupled with Gd-DOTA to yield a Gd-DOTA-CC9 complex as MRI contrast agent. It is used to label human MSCs (hMSCs) via electroporation. Electroporation-labeling of hMSCs with Gd-DOTA-CC9 induces cell-assembly of Gd-DOTA-CC9 nanoclusters in the cytoplasm, significantly promotes cell-labeling efficacy and intracellular retention time of the agent. In vitro MRI of labeled hMSCs exhibits significant signal reduction under T2 -weighted MRI, which can allow long-term tracking of labeled cell transplants in in vivo migration. The labeling strategy is safe in cytotoxicity and differentiation potential.
Collapse
Affiliation(s)
- Pengli Zhang
- College of Sciences, Shanghai University, Shanghai, 200444, China.,CAS Key Laboratory of Nano-Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Yanhui Zhang
- CAS Key Laboratory of Nano-Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Binbin Li
- CAS Key Laboratory of Nano-Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Hailu Zhang
- CAS Key Laboratory of Nano-Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Haixia Lin
- College of Sciences, Shanghai University, Shanghai, 200444, China
| | - Zongwu Deng
- CAS Key Laboratory of Nano-Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Bo Tan
- CAS Key Laboratory of Nano-Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| |
Collapse
|
9
|
Zhang Y, Zhang H, Ding L, Zhang H, Zhang P, Jiang H, Tan B, Deng Z. MRI reveals slow clearance of dead cell transplants in mouse forelimb muscles. Mol Med Rep 2017; 16:4068-4074. [PMID: 28765924 PMCID: PMC5646989 DOI: 10.3892/mmr.2017.7100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 07/07/2017] [Indexed: 12/23/2022] Open
Abstract
A small molecule tetraazacyclododecane-1,4,7,10-tetraacetic acid (Gd-DOTA)4-TPP agent is used to label human mesenchymal stem cells (hMSCs) via electroporation (EP). The present study assessed the cytotoxicity of cell labeling, in addition to its effect on cell differentiation potential. There were no significant adverse effects on cell viability or differentiation induced by either EP or cellular uptake of (Gd-DOTA)4-TPP. Labeled live and dead hMSCs were transplanted into mouse forelimb muscles. T2-weighted magnetic resonance imaging (MRI) was used to track the in vivo fate of the cell transplants. The labeling and imaging strategy allowed long term tracking of the cell transplants and unambiguous distinguishing of the cell transplants from their surrounding tissues. Cell migration was observed for live hMSCs injected into subcutaneous tissues, however not for either live or dead hMSCS injected into limb muscles. A slow clearance process occurred of the dead cell transplants in the limb muscular tissue. The MRI results therefore reveal that the fate and physiological activities of cell transplants depend on the nature of their host tissue.
Collapse
Affiliation(s)
- Yanhui Zhang
- College of Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Hongyan Zhang
- CAS Key Laboratory of Nano‑Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano‑Tech and Nano‑Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215123, P.R. China
| | - Lijun Ding
- Center for Reproductive Medicine, Nanjing Drum Tower Hospital, Nanjing University Medical School, Nanjing, Jiangsu 210008, P.R. China
| | - Hailu Zhang
- CAS Key Laboratory of Nano‑Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano‑Tech and Nano‑Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215123, P.R. China
| | - Pengli Zhang
- College of Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Haizhen Jiang
- College of Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Bo Tan
- CAS Key Laboratory of Nano‑Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano‑Tech and Nano‑Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215123, P.R. China
| | - Zongwu Deng
- CAS Key Laboratory of Nano‑Bio Interface and Division of Nanobionics Research, Suzhou Institute of Nano‑Tech and Nano‑Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215123, P.R. China
| |
Collapse
|
10
|
Abstract
Stem cell-based drug delivery for cancer therapy has steadily gained momentum in the past decade as several studies have reported stem cells' inherent tropism towards tumors. Since this science is still in its early stages and there are many factors that could significantly impact tumor tropism of stem cells, some contradictory results have been observed. This review starts by examining a number of proof-of-concept studies that demonstrate the potential application of stem cells in cancer therapy. Studies that illustrate stem cells' tumor tropism and discuss the technical difficulties that could impact the therapeutic outcome are also highlighted. The discussion also emphasizes stem cell imaging/tracking, as it plays a crucial role in performing reliable dose-response studies and evaluating the therapeutic outcome of treatment protocols. In each section, the pros and cons associated with each method are highlighted, limitations are underlined, and potential solutions are discussed. The overall intention is to familiarize the reader with important practical issues related to stem cell cancer tropism and in vivo tracking, underline the shortcomings, and emphasize critical factors that need to be considered for effective translation of this science into the clinic.
Collapse
|
11
|
Bernau K, Lewis CM, Petelinsek AM, Benink HA, Zimprich CA, Meyerand ME, Suzuki M, Svendsen CN. In vivo tracking of human neural progenitor cells in the rat brain using bioluminescence imaging. J Neurosci Methods 2014; 228:67-78. [PMID: 24675049 DOI: 10.1016/j.jneumeth.2014.03.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 03/13/2014] [Accepted: 03/14/2014] [Indexed: 01/01/2023]
Abstract
BACKGROUND Stem cell therapies appear promising for treating certain neurodegenerative disorders and molecular imaging methods that track these cells in vivo could answer some key questions regarding their survival and migration. Bioluminescence imaging (BLI), which relies on luciferase expression in these cells, has been used for this purpose due to its high sensitivity. NEW METHOD In this study, we employ BLI to track luciferase-expressing human neural progenitor cells (hNPC(Luc2)) in the rat striatum long-term. RESULTS We show that hNPC(Luc2) are detectable in the rat striatum. Furthermore, we demonstrate that using this tracking method, surviving grafts can be detected in vivo for up to 12 weeks, while those that were rejected do not produce bioluminescence signal. We also demonstrate the ability to discern hNPC(Luc2) contralateral migration. COMPARISON WITH EXISTING METHODS Some of the advantages of BLI compared to other imaging methods used to track progenitor/stem cells include its sensitivity and specificity, low background signal and ability to distinguish surviving grafts from rejected ones over the long term while the blood-brain barrier remains intact. CONCLUSIONS These new findings may be useful in future preclinical applications developing cell-based treatments for neurodegenerative disorders.
Collapse
Affiliation(s)
- Ksenija Bernau
- University of Wisconsin-Madison, 4325a Veterinary Medicine Building, 2015 Linden Dr., Madison, WI 53706, USA.
| | - Christina M Lewis
- University of Wisconsin-Madison, 1005 Wisconsin Institute for Medical Research, 1111 Highland Ave., Madison, WI 53705, USA.
| | - Anna M Petelinsek
- University of Wisconsin-Madison, 4325a Veterinary Medicine Building, 2015 Linden Dr., Madison, WI 53706, USA.
| | - Hélène A Benink
- Promega Corporation, 2800 Woods Hollow Rd., Fitchburg, WI 53711, USA.
| | - Chad A Zimprich
- Promega Corporation, 2800 Woods Hollow Rd., Fitchburg, WI 53711, USA.
| | - M Elizabeth Meyerand
- University of Wisconsin-Madison, 1129 Wisconsin Institute for Medical Research, 1111 Highland Ave., Madison, WI 53705, USA.
| | - Masatoshi Suzuki
- University of Wisconsin-Madison, 4124 Veterinary Medicine Building, 2015 Linden Dr., Madison, WI 53706, USA.
| | - Clive N Svendsen
- University of Wisconsin-Madison, 5009 Wisconsin Institute for Medical Research, 1111 Highland Ave., Madison, WI 53705, USA.
| |
Collapse
|
12
|
Chicha L, Smith T, Guzman R. Stem cells for brain repair in neonatal hypoxia-ischemia. Childs Nerv Syst 2014; 30:37-46. [PMID: 24178233 DOI: 10.1007/s00381-013-2304-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 10/08/2013] [Indexed: 12/15/2022]
Abstract
Neonatal hypoxic-ischemic insults are a significant cause of pediatric encephalopathy, developmental delays, and spastic cerebral palsy. Although the developing brain's plasticity allows for remarkable self-repair, severe disruption of normal myelination and cortical development upon neonatal brain injury are likely to generate life-persisting sensory-motor and cognitive deficits in the growing child. Currently, no treatments are available that can address the long-term consequences. Thus, regenerative medicine appears as a promising avenue to help restore normal developmental processes in affected infants. Stem cell therapy has proven effective in promoting functional recovery in animal models of neonatal hypoxic-ischemic injury and therefore represents a hopeful therapy for this unmet medical condition. Neural stem cells derived from pluripotent stem cells or fetal tissues as well as umbilical cord blood and mesenchymal stem cells have all shown initial success in improving functional outcomes. However, much still remains to be understood about how those stem cells can safely be administered to infants and what their repair mechanisms in the brain are. In this review, we discuss updated research into pathophysiological mechanisms of neonatal brain injury, the types of stem cell therapies currently being tested in this context, and the potential mechanisms through which exogenous stem cells might interact with and influence the developing brain.
Collapse
Affiliation(s)
- L Chicha
- Department of Biomedicine, University of Basel, Basel, Switzerland
| | | | | |
Collapse
|
13
|
Boehm-Sturm P, Aswendt M, Minassian A, Michalk S, Mengler L, Adamczak J, Mezzanotte L, Löwik C, Hoehn M. A multi-modality platform to image stem cell graft survival in the naïve and stroke-damaged mouse brain. Biomaterials 2013; 35:2218-26. [PMID: 24355489 DOI: 10.1016/j.biomaterials.2013.11.085] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 11/27/2013] [Indexed: 02/08/2023]
Abstract
Neural stem cell implantations have been extensively investigated for treatment of brain diseases such as stroke. In order to follow the localization and functional status of cells after implantation noninvasive imaging is essential. Therefore, we developed a comprehensive multi-modality platform for in vivo imaging of graft localization, density, and survival using 19F magnetic resonance imaging in combination with bioluminescence imaging. We quantitatively analyzed cell graft survival over the first 4 weeks after transplantation in both healthy and stroke-damaged mouse brain and correlated our findings of graft vitality with the host innate immune response. The multi-modality imaging platform will help to improve cell therapy also in context other than stroke and to gain indispensable information for clinical translation.
Collapse
Affiliation(s)
- Philipp Boehm-Sturm
- In-Vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research in Cologne, Cologne, Germany
| | - Markus Aswendt
- In-Vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research in Cologne, Cologne, Germany
| | - Anuka Minassian
- In-Vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research in Cologne, Cologne, Germany
| | - Stefanie Michalk
- In-Vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research in Cologne, Cologne, Germany
| | - Luam Mengler
- In-Vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research in Cologne, Cologne, Germany
| | - Joanna Adamczak
- In-Vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research in Cologne, Cologne, Germany
| | - Laura Mezzanotte
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Clemens Löwik
- Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Mathias Hoehn
- In-Vivo-NMR Laboratory, Max-Planck-Institute for Neurological Research in Cologne, Cologne, Germany; Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
| |
Collapse
|
14
|
Multimodality molecular imaging of stem cells therapy for stroke. BIOMED RESEARCH INTERNATIONAL 2013; 2013:849819. [PMID: 24222920 PMCID: PMC3816035 DOI: 10.1155/2013/849819] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Accepted: 08/21/2013] [Indexed: 12/03/2022]
Abstract
Stem cells have been proposed as a promising therapy for treating stroke. While several studies have demonstrated the therapeutic benefits of stem cells, the exact mechanism remains elusive. Molecular imaging provides the possibility of the visual representation of biological processes at the cellular and molecular level. In order to facilitate research efforts to understand the stem cells therapeutic mechanisms, we need to further develop means of monitoring these cells noninvasively, longitudinally and repeatedly. Because of tissue depth and the blood-brain barrier (BBB), in vivo imaging of stem cells therapy for stroke has unique challenges. In this review, we describe existing methods of tracking transplanted stem cells in vivo, including magnetic resonance imaging (MRI), nuclear medicine imaging, and optical imaging (OI). Each of the imaging techniques has advantages and drawbacks. Finally, we describe multimodality imaging strategies as a more comprehensive and potential method to monitor transplanted stem cells for stroke.
Collapse
|
15
|
Zhang L, Wang Y, Tang Y, Jiao Z, Xie C, Zhang H, Gu P, Wei X, Yang GY, Gu H, Zhang C. High MRI performance fluorescent mesoporous silica-coated magnetic nanoparticles for tracking neural progenitor cells in an ischemic mouse model. NANOSCALE 2013; 5:4506-16. [PMID: 23591936 DOI: 10.1039/c3nr00119a] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Multifunctional probes with high MRI sensitivity and high efficiency for cell labeling are desirable for MR cell imaging. Herein, we have fabricated fluorescent mesoporous silica-coated superparamagnetic iron oxide nanoparticles (fmSiO4@SPIONs) for neural progenitor cell (C17.2) MR imaging. FmSiO4@SPIONs were discrete and uniform in size, and had a clear core-shell structure. The magnetic core size was about 10 nm and the fluorescent mesoporous silica coating layer was around 20 nm. Compared with fluorescent dense silica-coated SPIONs (fdSiO4@SPIONs) with a similar size, fmSiO4@SPIONs demonstrated higher MR sensitivity and cell labeling efficiency. When implanted into the right hemisphere of stroke mice, contralateral to the ischemic territory, a small amount of labeled cells were able to be tracked migrating to the lesion sites using a clinical MRI scanner (3 T). More impressively, even when administered intravenously, the labeled cells could also be monitored homing to the ischemic area. MRI observations were corroborated by histological studies of the brain tissues. Our study demonstrated that fmSiO4@SPIONs are highly effective for cell imaging and hold great promise for MRI cell tracking in future.
Collapse
Affiliation(s)
- Lu Zhang
- School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai 200030, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Yi P, Chen G, Zhang H, Tian F, Tan B, Dai J, Wang Q, Deng Z. Magnetic resonance imaging of Fe3O4@SiO2-labeled human mesenchymal stem cells in mice at 11.7 T. Biomaterials 2013; 34:3010-9. [PMID: 23357367 DOI: 10.1016/j.biomaterials.2013.01.022] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 01/04/2013] [Indexed: 12/21/2022]
Abstract
Fe(3)O(4)@SiO(2) core-shell nanoparticles were synthesized and used to label human mesenchymal stem cells (hMSCs) for in vitro and in vivo magnetic resonance imaging study. The diameter of the nanoparticles is 24-30 nm with a Fe(3)O(4) core of ∼8 nm and a SiO(2) shell of ~8 nm. Transverse relaxivity of the nanoparticles dispersed in water is measured to be ~106 mM(-1) s(-1). After incubation with hMSCs for 12 h at a concentration of 100 μg Fe/mL, cellular uptake of Fe(3)O(4)@SiO(2) is 20-100 pg Fe/cell, which are located predominantly in the cytoplasm of cells. This level of uptake exhibits no significant influence on hMSCs' viability and differentiation. In vitro imaging of Fe(3)O(4)@SiO(2)-labeled hMSCs evenly distributed in agarose gel yields single cell sensitivity at 11.7 T. In vivo imaging of Fe(3)O(4)@SiO(2)-labeled hMSCs injected into the left brain hemisphere of nude mice yields imaging sensitivity of ~130 hMSCs.
Collapse
Affiliation(s)
- Peiwei Yi
- Division of Nanobionics, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, PR China
| | | | | | | | | | | | | | | |
Collapse
|
17
|
Borlongan CV, Rodrigues AA, Oliveira MC. Breaking the barrier in stroke: what should we know? A mini-review. Curr Pharm Des 2012; 18:3615-23. [PMID: 22574976 DOI: 10.2174/138161212802002670] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Accepted: 01/24/2012] [Indexed: 11/22/2022]
Abstract
The blood-brain barrier (BBB) has been considered as an important regulator of brain homeostasis, and its disturbance has been implicated in the onset and/or evolution of many pathological manifestations of neurodegenerative and inflammatory diseases [1, 2]. In particular, BBB breakdown has been closely associated with the primary insult, as well as the secondary cell death of stroke. Here, we review the pioneering contributions of leading scientists who have vested interest in advancing our understanding of the pivotal role of BBB in stroke, but also exploiting this knowledge in developing novel BBB-based therapeutic regimens to abrogate stroke symptoms. The study of BBB as a fundamental research theme and as a target for clinical applications in stroke can be approached in three main themes namely, basic science research, translational and clinical research, and emerging therapies for BBB repair in stroke. This minireview captures cutting-edge discoveries establishing BBB as a central target for abetting neuroprotection and neurorestoration in stroke.
Collapse
Affiliation(s)
- Cesar V Borlongan
- Department of Neurosurgery and Brain Repair, University of South Florida College of Medicine, Tampa, FL 33612 USA.
| | | | | |
Collapse
|
18
|
Development of new technologies for stem cell research. J Biomed Biotechnol 2012; 2012:741416. [PMID: 23251081 PMCID: PMC3518316 DOI: 10.1155/2012/741416] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Accepted: 09/27/2012] [Indexed: 01/15/2023] Open
Abstract
Since the 1960s, the stem cells have been extensively studied including embryonic stem cells, neural stem cells, bone marrow hematopoietic stem cells, and mesenchymal stem cells. In the recent years, several stem cells have been initially used in the treatment of diseases, such as in bone marrow transplant. At the same time, isolation and culture experimental technologies for stem cell research have been widely developed in recent years. In addition, molecular imaging technologies including optical molecular imaging, positron emission tomography, single-photon emission computed tomography, and computed tomography have been developed rapidly in recent the 10 years and have also been used in the research on disease mechanism and evaluation of treatment of disease related with stem cells. This paper will focus on recent typical isolation, culture, and observation techniques of stem cells followed by a concise introduction. Finally, the current challenges and the future applications of the new technologies in stem cells are given according to the understanding of the authors, and the paper is then concluded.
Collapse
|
19
|
Mitsiadis TA, Woloszyk A, Jiménez-Rojo L. Nanodentistry: combining nanostructured materials and stem cells for dental tissue regeneration. Nanomedicine (Lond) 2012; 7:1743-53. [DOI: 10.2217/nnm.12.146] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Regenerative dentistry represents an attractive multidisciplinary therapeutic approach that complements traditional restorative/surgery techniques and benefits from recent advances in stem cell biology, molecular biology, genomics and proteomics. Materials science is important in such advances to move regenerative dentistry from the laboratory to the clinic. The design of novel nanostructured materials, such as biomimetic matrices and scaffolds for controlling cell fate and differentiation, and nanoparticles for diagnostics, imaging and targeted treatment, is needed. The combination of nanotechnology, which allows the creation of sophisticated materials with exquisite fine structural detail, and stem cell biology turns out to be increasingly useful in regenerative medicine. The administration to patients of dynamic biological agents comprising stem cells, bioactive scaffolds and/or nanoparticles will certainly increase the regenerative impact of dental pathological tissues. This overview briefly describes some of the actual benefits and future possibilities of nanomaterials in the emerging field of stem cell-based regenerative dentistry.
Collapse
Affiliation(s)
- Thimios A Mitsiadis
- Institute of Oral Biology, Department of Orofacial Development & Regeneration, ZZM, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Anna Woloszyk
- Institute of Oral Biology, Department of Orofacial Development & Regeneration, ZZM, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Lucia Jiménez-Rojo
- Institute of Oral Biology, Department of Orofacial Development & Regeneration, ZZM, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| |
Collapse
|
20
|
Sztriha LK, O'Gorman RL, Modo M, Barker GJ, Williams SCR, Kalra L. Monitoring brain repair in stroke using advanced magnetic resonance imaging. Stroke 2012; 43:3124-31. [PMID: 23010674 DOI: 10.1161/strokeaha.111.649244] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Laszlo K Sztriha
- Department of clinical Neuroscience, Institute of Psychiatry, King's College London, Denmark Hill, SE5 8AF, London, UK.
| | | | | | | | | | | |
Collapse
|
21
|
Binello E, Green S, Germano IM. Radiosurgery for high-grade glioma. Surg Neurol Int 2012; 3:S118-26. [PMID: 22826815 PMCID: PMC3400492 DOI: 10.4103/2152-7806.95423] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 03/28/2012] [Indexed: 01/08/2023] Open
Abstract
Background: For patients with newly diagnosed high-grade gliomas (HGG), the current standard-of-care treatment involves surgical resection, followed by concomitant temozolomide (TMZ) and external beam radiation therapy (XRT), and subsequent TMZ chemotherapy. For patients with recurrent HGG, there is no standard of care. Stereotactic radiosurgery (SRS) is used to deliver focused, relatively large doses of radiation to a small, precisely defined target. Treatment is usually delivered in a single fraction, but may be delivered in up to five fractions. The role of SRS in the management of patients with HGG is not well established. Methods: The PubMed database was searched with combinations of relevant MESH headings and limits. Case reports and/or small case series were excluded. Attention was focused on overall median survival as an objective measure, and data were examined separately for newly diagnosed and recurrent HGG. Results: With respect to newly diagnosed HGG, there is strong evidence that addition of an SRS boost prior to standard XRT provides no survival benefit. However, recent retrospective evidence suggests a possible survival benefit when SRS is performed after XRT. With respect to recurrent HGG, there is suggestion that SRS may confer a survival benefit but with potentially higher complication rates. Newer studies are investigating the combination of SRS with targeted molecular agents. Controlled prospective clinical trials using advanced imaging techniques are necessary for a complete assessment. Conclusions: SRS has the potential to provide a survival benefit for patients with HGG. Further research is clearly warranted to define its role in the management of newly diagnosed and recurrent HGG.
Collapse
Affiliation(s)
- Emanuela Binello
- Department of Neurosurgery, Mount Sinai School of Medicine, 1 Gustave L. Levy Place, New York, NY 10129, USA
| | | | | |
Collapse
|
22
|
PET molecular imaging in stem cell therapy for neurological diseases. Eur J Nucl Med Mol Imaging 2011; 38:1926-38. [DOI: 10.1007/s00259-011-1860-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 06/06/2011] [Indexed: 01/12/2023]
|
23
|
McColgan P, Sharma P, Bentley P. Stem Cell Tracking in Human Trials: A Meta-Regression. Stem Cell Rev Rep 2011; 7:1031-40. [DOI: 10.1007/s12015-011-9260-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
24
|
Burns TC, Steinberg GK. Stem cells and stroke: opportunities, challenges and strategies. Expert Opin Biol Ther 2011; 11:447-61. [PMID: 21323594 DOI: 10.1517/14712598.2011.552883] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Stroke remains the leading cause of disability in the Western world. Despite decades of work, no clinically effective therapies exist to facilitate recovery from stroke. Stem cells may have the potential to minimize injury and promote recovery after stroke. AREAS COVERED Transplanted stem cells have been shown in animal models to migrate to the injured region, secrete neurotrophic compounds, promote revascularization, enhance plasticity and regulate the inflammatory response, thereby minimizing injury. Endogenous neural stem cells also have a remarkable propensity to respond to injury. Under select conditions, subventricular zone progenitors may be mobilized to replace lost neurons. In response to focal infarcts, neuroblasts play important trophic roles to minimize neural injury. Importantly, these endogenous repair mechanisms may be experimentally augmented, leading to robust improvements in function. Ongoing clinical studies are now assessing the safety and feasibility of cell-based therapies for stroke. EXPERT OPINION We outline the unique challenges and potential pitfalls in the clinical translation of stem cell research for stroke. We then detail what we believe to be the specific basic science and clinical strategies needed to overcome these challenges, fill remaining gaps in knowledge and facilitate development of clinically viable stem cell-based therapies for stroke.
Collapse
Affiliation(s)
- Terry C Burns
- Stanford University School of Medicine, Department of Neurosurgery, Stanford, CA 94305-5487, USA.
| | | |
Collapse
|
25
|
Sandu N, Schaller B. Stem cell transplantation in brain tumors: a new field for molecular imaging? Mol Med 2010; 16:433-7. [PMID: 20593112 DOI: 10.2119/molmed.2010.00035] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2010] [Accepted: 06/28/2010] [Indexed: 01/23/2023] Open
Abstract
Neural stem cells have been proposed as a new and promising treatment modality in various pathologies of the central nervous system, including malignant brain tumors. However, the underlying mechanism by which neural stem cells target tumor areas remains elusive. Monitoring of these cells is currently done by use of various modes of molecular imaging, such as optical imaging, magnetic resonance imaging and positron emission tomography, which is a novel technology for visualizing metabolism and signal transduction to gene expression. In this new context, the microenvironment of (malignant) brain tumors and the blood-brain barrier gains increased interest. The authors of this review give a unique overview of the current molecular-imaging techniques used in different therapeutic experimental brain tumor models in relation to neural stem cells. Such methods for molecular imaging of gene-engineered neural stem/progenitor cells are currently used to trace the location and temporal level of expression of therapeutic and endogenous genes in malignant brain tumors, closing the gap between in vitro and in vivo integrative biology of disease in neural stem cell transplantation.
Collapse
Affiliation(s)
- Nora Sandu
- Department of Neurosurgery, University of Lausanne, Lausanne, Switzerland
| | | |
Collapse
|