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Ni L, You H, Wang M, Qian J, Chen J. BrdU Methodology for Labeling Renal Stem Cells during Kidney Development of Mice. Stem Cells Dev 2022; 31:195-206. [PMID: 35245977 DOI: 10.1089/scd.2021.0362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A continuous Bromodeoxyuridine (BrdU) labeling approach was used during the whole process of the mice kidney development to explore the best BrdU-labeling time, the distribution of BrdU-retaining cells, and to probe into the niche of stem cells in adult kidney. BrdU were injected intraperitoneally to the mice once daily for 3 consecutive days from day 11.5 of embryonic period (E11.5) until the postnatal day 21.5 (P21.5). The kidneys were harvested 24 hours after the last BrdU injection and 6 months of age. A renal injury model of subtotal nephrectomy (Nx) in adult mice treated with BrdU was used to observe the response of BrdU-retaining cells to renal injury. When BrdU labeled at E11.5-13.5, the BrdU-retaining cells were mainly detected in the papilla and inner medulla in adult mice. When BrdU labeled at P0.5-11.5, the BrdU-retaining cells were mainly detected in the inner medulla and outer medulla. When BrdU labeled at P12.5-17.5, the BrdU-retaining cells were mainly detected in the outer medulla. When BrdU labeled at P18.5-21.5, almost no BrdU-positive cells could be found, except the cortex. 72 hours after Nx operation in adult mice by BrdU-labeling at P0.5-2.5 or P15.5-17.5, a significant increase of BrdU-retaining cells was found in many cortical proximal tubules, while a dramatic decrease was detected in medulla near the incision edge. Moreover, most of BrdU-positive cells were not co-stained with proliferating cell nuclear antigen (PCNA). The distributions of label-retaining cells in the mice kidney were different if BrdU was administered in different periods of kidney development. Most of BrdU-retaining cells were quiescent, the proximal tubules were the only segments that always contained BrdU positive cells, which may have the niche of stem cells in adult kidney.
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Affiliation(s)
- Li Ni
- Huashan Hospital Fudan University, 159397, Division of Nephrology, Shanghai, Shanghai, China;
| | - Huaizhou You
- Huashan Hospital Fudan University, 159397, Division of Nephrology, Shanghai, China, 200040;
| | - Mengjing Wang
- Huashan Hospital Fudan University, 159397, Division of Nephrology, Shanghai, Shanghai, China;
| | - Jing Qian
- Huashan Hospital Fudan University, 159397, Division of Nephrology, Shanghai, Shanghai, China;
| | - Jing Chen
- Huashan Hospital Fudan University, 159397, Division of Nephrology, Shanghai, Shanghai, China;
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Zhang Y, Zeng F, Han X, Weng J, Gao Y. Lineage tracing: technology tool for exploring the development, regeneration, and disease of the digestive system. Stem Cell Res Ther 2020; 11:438. [PMID: 33059752 PMCID: PMC7559019 DOI: 10.1186/s13287-020-01941-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/17/2020] [Indexed: 12/15/2022] Open
Abstract
Lineage tracing is the most widely used technique to track the migration, proliferation, and differentiation of specific cells in vivo. The currently available gene-targeting technologies have been developing for decades to study organogenesis, tissue injury repairing, and tumor progression by tracing the fates of individual cells. Recently, lineage tracing has expanded the platforms available for disease model establishment, drug screening, cell plasticity research, and personalized medicine development in a molecular and cellular biology perspective. Lineage tracing provides new views for exploring digestive organ development and regeneration and techniques for digestive disease causes and progression. This review focuses on the lineage tracing technology and its application in digestive diseases.
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Affiliation(s)
- Yue Zhang
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Fanhong Zeng
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Xu Han
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Jun Weng
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China. .,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.
| | - Yi Gao
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China. .,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.
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Marycz K, Kornicka K, Röcken M. Static Magnetic Field (SMF) as a Regulator of Stem Cell Fate - New Perspectives in Regenerative Medicine Arising from an Underestimated Tool. Stem Cell Rev Rep 2019; 14:785-792. [PMID: 30225821 PMCID: PMC6223715 DOI: 10.1007/s12015-018-9847-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Tissue engineering and stem cell-based therapies are one of the most rapidly developing fields in medical sciences. Therefore, much attention has been paid to the development of new drug-delivery systems characterized by low cytotoxicity, high efficiency and controlled release. One of the possible strategies to achieve these goals is the application of magnetic field and/or magnetic nanoparticles, which have been shown to exert a wide range of effects on cellular metabolism. Static magnetic field (SMF) has been commonly used in medicine as a tool to increase wound healing, bone regeneration and as a component of magnetic resonance technique. However, recent data shed light on deeper mechanism of SMF action on physiological properties of different cell populations, including stem cells. In the present review, we focused on SMF effects on stem cell biology and its possible application as a tool for controlled drug delivery. We also highlighted the perspectives, in which SMF can be used in future therapies in tissue engineering due to its easy application and a wide range of possible effects on cells and organisms.
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Affiliation(s)
- Krzysztof Marycz
- Department of Experimental Biology, Wroclaw University of Environmental and Life Sciences, Norwida 27B, Wrocław, Poland. .,Faculty of Veterinary Medicine, Equine Clinic - Equine Surgery, Justus-Liebig-University, 35392, Gießen, Germany.
| | - K Kornicka
- Department of Experimental Biology, Wroclaw University of Environmental and Life Sciences, Norwida 27B, Wrocław, Poland
| | - M Röcken
- Faculty of Veterinary Medicine, Equine Clinic - Equine Surgery, Justus-Liebig-University, 35392, Gießen, Germany
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van den Bos C, Keefe R, Schirmaier C, McCaman M. Therapeutic human cells: manufacture for cell therapy/regenerative medicine. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2016; 138:61-97. [PMID: 23934363 DOI: 10.1007/10_2013_233] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
: Human primary cells (e.g. adult stem cells) as well as differentiated cells, including those of the immune system, have been found to be therapeutically useful and free of ethical concerns. Several products have received market authorization and numerous promising clinical trials are underway. We believe that such primary therapeutic cells will dominate the market for cell therapy applications for the foreseeable future. Consequently, production of such cellular products warrants attention and needs to be a fully controlled pharmaceutical process. Thus, where possible, such production should change from manufacture towards a truly scalable industrialized process for both allogeneic and autologous products. Here, we discuss manufacturing aspects of both autogeneic and allogeneic products, review the field, and provide historical context.
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Tracking Transplanted Stem Cells Using Magnetic Resonance Imaging and the Nanoparticle Labeling Method in Urology. BIOMED RESEARCH INTERNATIONAL 2015; 2015:231805. [PMID: 26413510 PMCID: PMC4564577 DOI: 10.1155/2015/231805] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 03/10/2015] [Accepted: 03/17/2015] [Indexed: 12/23/2022]
Abstract
A reliable in vivo imaging method to localize transplanted cells and monitor their viability would enable a systematic investigation of cell therapy. Most stem cell transplantation studies have used immunohistological staining, which does not provide information about the migration of transplanted cells in vivo in the same host. Molecular imaging visualizes targeted cells in a living host, which enables determining the biological processes occurring in transplanted stem cells. Molecular imaging with labeled nanoparticles provides the opportunity to monitor transplanted cells noninvasively without sacrifice and to repeatedly evaluate them. Among several molecular imaging techniques, magnetic resonance imaging (MRI) provides high resolution and sensitivity of transplanted cells. MRI is a powerful noninvasive imaging modality with excellent image resolution for studying cellular dynamics.
Several types of nanoparticles including superparamagnetic iron oxide nanoparticles and magnetic nanoparticles have been used to magnetically label stem cells and monitor viability by MRI in the urologic field. This review focuses on the current role and limitations of MRI with labeled nanoparticles for tracking transplanted stem cells in urology.
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Feng G, Tay CY, Chui QX, Liu R, Tomczak N, Liu J, Tang BZ, Leong DT, Liu B. Ultrabright organic dots with aggregation-induced emission characteristics for cell tracking. Biomaterials 2014; 35:8669-77. [DOI: 10.1016/j.biomaterials.2014.06.023] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Accepted: 06/09/2014] [Indexed: 02/07/2023]
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Molecular imaging in stem cell therapy for spinal cord injury. BIOMED RESEARCH INTERNATIONAL 2014; 2014:759514. [PMID: 24701583 PMCID: PMC3950476 DOI: 10.1155/2014/759514] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 12/09/2013] [Indexed: 01/09/2023]
Abstract
Spinal cord injury (SCI) is a serious disease of the center nervous system (CNS). It is a devastating injury with sudden loss of motor, sensory, and autonomic function distal to the level of trauma and produces great personal and societal costs. Currently, there are no remarkable effective therapies for the treatment of SCI. Compared to traditional treatment methods, stem cell transplantation therapy holds potential for repair and functional plasticity after SCI. However, the mechanism of stem cell therapy for SCI remains largely unknown and obscure partly due to the lack of efficient stem cell trafficking methods. Molecular imaging technology including positron emission tomography (PET), magnetic resonance imaging (MRI), optical imaging (i.e., bioluminescence imaging (BLI)) gives the hope to complete the knowledge concerning basic stem cell biology survival, migration, differentiation, and integration in real time when transplanted into damaged spinal cord. In this paper, we mainly review the molecular imaging technology in stem cell therapy for SCI.
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Takaori K, Yanagita M. Kidney regeneration and stem cells. Anat Rec (Hoboken) 2013; 297:129-36. [PMID: 24293404 DOI: 10.1002/ar.22801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 09/13/2013] [Indexed: 12/31/2022]
Abstract
The kidney has the capacity to recover from ischemic and toxic insults. Although there has been debate about the origin of cells that replace injured epithelial cells, it is now widely recognized that intrinsic surviving tubular cells are responsible for the repair. On the other hand, the cells, which have stem cell-like characteristics, have been isolated in the kidney using various methods, but it remains unknown if these stem cells actually exist in the adult kidney and if they are involved in kidney regeneration. This review will focus on the pathophysiology of kidney regeneration and the contribution of renal stem cells. We also discuss possible therapeutic applications to kidney disease.
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Affiliation(s)
- Koji Takaori
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Stem cell survival is severely compromised by the thymidineanalog EdU (5-ethynyl-2′-deoxyuridine), an alternative to BrdU for proliferation assays and stem cell tracing. Anal Bioanal Chem 2013; 405:9585-91. [DOI: 10.1007/s00216-013-7387-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 09/10/2013] [Accepted: 09/17/2013] [Indexed: 12/01/2022]
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Balmayor ER, Flicker M, Käser T, Saalmüller A, Erben RG. Human placental alkaline phosphatase as a tracking marker for bone marrow mesenchymal stem cells. Biores Open Access 2013; 2:346-55. [PMID: 24083090 PMCID: PMC3776624 DOI: 10.1089/biores.2013.0027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Currently, adult mesenchymal stem cells (MSCs) are being evaluated for a wide variety of therapeutic approaches. It has been suggested that MSCs possess regenerative properties when implanted or injected into damaged tissue. However, the efficacy of MSCs in several of the proposed treatments is still controversial. To further explore the therapeutic potential of these cells, it is necessary to trace the fate of individual donor or manipulated cells in the host organism. Recent studies from our lab showed that human placental alkaline phosphatase (hPLAP) is a marker with great potential for cell tracking. However, a potential concern related to this marker is its enzymatic activity, which might alter cell behavior and differentiation by hydrolyzing substrates in the extracellular space and thereby changing the cellular microenvironment. Therefore, the aim of this study was to characterize bone marrow MSCs (BMSCs) derived from hPLAP-transgenic inbred F344 rats (hPLAP-tg) in comparison to wild type (wt) BMSCs. Here, we show that BMSCs from wt and hPLAP-tg donors are indistinguishable in terms of cell morphology, viability, adhesion, immune phenotype, and proliferation as well as in their differentiation capacity over six passages. The expression of the hPLAP marker enzyme was not impaired by extensive in vitro cultivation, osteogenic, adipogenic, or chondrogenic differentiation, or seeding onto two- or three-dimensional biomaterials. Thus, our study underscores the utility of genetically labeled BMSCs isolated from hPLAP-tg donors for long-term tracking of the fate of transplanted MSCs in regenerative therapies.
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Affiliation(s)
| | - Magdalena Flicker
- Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
| | - Tobias Käser
- Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria
| | - Armin Saalmüller
- Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria
| | - Reinhold G. Erben
- Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
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Froelich K, Steussloff G, Schmidt K, Ramos Tirado M, Technau A, Scherzed A, Hackenberg S, Radeloff A, Hagen R, Kleinsasser N. DiI labeling of human adipose-derived stem cells: evaluation of DNA damage, toxicity and functional impairment. Cells Tissues Organs 2013; 197:384-98. [PMID: 23485626 DOI: 10.1159/000346714] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/26/2012] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Adipose tissue-derived stem cells (ASCs) have become the primary focus of tissue engineering research. To understand their functions and behavior in in vitro and in vivo models, it is mandatory to track the implanted cells and distinguish them from the resident or host cells. A common labeling method is the use of fluorescent dyes, e.g. the lipophilic carbocyanine dye, DiI. This study aimed to analyze potential DNA damage, toxicity and impairment of the functional properties of human ASCs after labeling with DiI. METHODS Cytotoxicity was measured using the MTT assay and DNA damage was determined by means of the comet assay. Potential apoptotic effects were determined using the annexin V-propidium iodide test. Differentiation potential was evaluated by trilineage differentiation procedures in labeled and unlabeled ASCs. Proliferation as well as migration capability was analyzed, and the duration and stability of DiI labeling in ASCs during in vitro expansion was observed over a period of 35 days. RESULTS DiI labeling did not cause genotoxic effects 15, or 30 min or 24 h after the labeling procedure, and there were no cytotoxic effects until 72 h afterwards. No impairment of proliferation or migration capability or differentiation potential could be determined. However, after 35 days, only 37% of labeled cells could be detected using the fluorescence microscope, which indicates a decrease in staining stability during in vitro expansion. CONCLUSION DiI is a convenient method for ASCs labeling which causes no toxic effects and does not impair the proliferation, migration or differentiation potential of ASCs after the labeling procedure.
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Affiliation(s)
- K Froelich
- Department of Otorhinolaryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Wuerzburg, Germany.
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De novo kidney regeneration with stem cells. J Biomed Biotechnol 2012; 2012:453519. [PMID: 23251079 PMCID: PMC3518373 DOI: 10.1155/2012/453519] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Accepted: 10/16/2012] [Indexed: 02/07/2023] Open
Abstract
Recent studies have reported on techniques to mobilize and activate endogenous stem-cells in injured kidneys or to introduce exogenous stem cells for tissue repair. Despite many recent advantages in renal regenerative therapy, chronic kidney disease (CKD) remains a major cause of morbidity and mortality and the number of CKD patients has been increasing. When the sophisticated structure of the kidneys is totally disrupted by end stage renal disease (ESRD), traditional stem cell-based therapy is unable to completely regenerate the damaged tissue. This suggests that whole organ regeneration may be a promising therapeutic approach to alleviate patients with uncured CKD. We summarize here the potential of stem-cell-based therapy for injured tissue repair and de novo whole kidney regeneration. In addition, we describe the hurdles that must be overcome and possible applications of this approach in kidney regeneration.
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Jhin MJ, Kim KH, Kim SH, Kim YS, Kim ST, Koo KT, Kim TI, Seol YJ, Ku Y, Rhyu IC, Lee YM. Ex vivo bone morphogenetic protein-2 gene delivery using bone marrow stem cells in rabbit maxillary sinus augmentation in conjunction with implant placement. J Periodontol 2012; 84:985-94. [PMID: 22897653 DOI: 10.1902/jop.2012.120221] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND This study evaluates the potential of bone morphogenetic protein 2 (BMP-2) gene-transduced bone marrow stem cells (BMSCs) to facilitate osseous healing after rabbit maxillary sinus augmentation in conjunction with implant placement. METHODS Autologous BMSCs derived from New Zealand white rabbits were cultured and transduced with BMP-2 using an adenovirus vector. Transduced BMSCs (BMP-2/BMSCs) were then combined with a deproteinized bovine bone mineral (DBBM) scaffold. Twenty-seven animals were randomly allocated into three groups: 1) control, sinus grafted with DBBM alone; 2) BMSC, sinus grafted with non-transduced BMSCs and DBBM; and 3) BMP-2/BMSC, sinus grafted with BMP-2/BMSCs and DBBM. During these procedures, a mini-implant was placed in the floor of the sinus. Animals were sacrificed at 2, 4, and 8 weeks after surgery. New bone area and bone-to-implant contact (BIC) were evaluated histomorphometrically. RESULTS At 2 and 4 weeks, the BMP-2/BMSC group showed more new bone area and higher BIC than the other two groups. BMP-2/BMSCs were detected with confocal microscopy for up to 4 weeks, which indicates that transduced cells contributed to new bone formation. However, at 8 weeks, there was no difference in new bone area or BIC among the three groups. CONCLUSIONS These results suggest that BMP-2 delivery using BMSCs may result in earlier and increased bone formation in the maxillary sinus. This finding may offer more stable bone support to implants and reduce healing times. However, this study also revealed limitations in the stimulatory effect of BMP-2/BMSCs, such as diminished activity over time in later healing stages.
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Affiliation(s)
- Min-Ju Jhin
- Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
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Chen MR, Kao VYY, Liu SW, Wu TC, Yu HC, Hsu CH, Chen CT, Lin KM. NONINVASIVE OPTICAL IMAGING FOR TRACKING GENE DELIVERY AND RECOMBINATION IN TUMOR. BIOMEDICAL ENGINEERING-APPLICATIONS BASIS COMMUNICATIONS 2012. [DOI: 10.4015/s1016237209001441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Here, we report the generation of optical imaging reporter breast tumor cells that allow the longitudinal, in vivo, noninvasive imaging of gene recombination in tumor. Tumor-gene targeting is a promising approach of treating cancers, and a suitable gene delivery method is the criteria for success. By using the cre lox genetic engineering tool, we targeted stable green fluorescent protein expression in metastatic-prone human breast cancer MDA-MB231 cells that switch to express firefly luciferase upon the exogenous delivery and expression of cre DNA recombinase. We tested this model in vivo by intratumor injection of cre adenovirus and demonstrated the usefulness of this model to achieve longitudinal bioluminescence imaging of DNA recombination in tumor. This optical imaging vector and tumor model will facilitate the research for biomaterial solutions for carriers in gene therapy, and in studies on tumor targeting, tracking for tumor metastasis and migration of tumor stem cells, and for determining the anticancer drug efficacy.
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Affiliation(s)
- Mei-Ru Chen
- Division of Medical Engineering Research, National Health Research Institutes, Zhunan Town, Miaoli, Taiwan
| | - Vivia Yu-Ying Kao
- Department of Biotechnology, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
| | - Shan-Wen Liu
- Division of Medical Engineering Research, National Health Research Institutes, Zhunan Town, Miaoli, Taiwan
- Department of Biomedical Engineering and Environmental Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Tzu-Chin Wu
- Division of Medical Engineering Research, National Health Research Institutes, Zhunan Town, Miaoli, Taiwan
| | - Hsiao-Chi Yu
- Division of Medical Engineering Research, National Health Research Institutes, Zhunan Town, Miaoli, Taiwan
| | - Chin-Han Hsu
- Department of Biomedical Engineering and Environmental Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Chin-Tu Chen
- Department of Radiology and Committee on Medical Physics, University of Chicago, IL, USA
| | - Kurt M. Lin
- Division of Medical Engineering Research, National Health Research Institutes, Zhunan Town, Miaoli, Taiwan
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Assessment of the green florescence protein labeling method for tracking implanted mesenchymal stem cells. Cytotechnology 2012; 64:391-401. [PMID: 22373822 DOI: 10.1007/s10616-011-9417-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Accepted: 12/05/2011] [Indexed: 01/14/2023] Open
Abstract
Although green fluorescent protein (GFP) labeling is widely accepted as a tracking method, much remains uncertain regarding the retention of injected GFP-labeled cells implanted in ischemic organs. In this study, we evaluate the effectiveness of GFP for identifying and tracking implanted bone marrow- mesenchymal stem cells (BM-MSCs) and the effect of GFP on the paracrine actions of these cells. MSCs isolated from rat femur marrow were transduced with a recombinant adenovirus carrying GFP. After transplantation of the GFP-labeled BM-MSCs into the infarct zone of rat hearts, the survival, distribution, and migration of the labeled cells were analyzed at 3, 7, 14, and 28 days. To evaluate the effect of GFP on the paracrine actions of BM-MSCs, Western blot analysis was performed to detect the expression of vascular endothelial growth factor (VEGF), b fibroblast growth factor (b FGF), tissue inhibitor of metalloproteinase-1 (TIMP-1) and matrix metalloproteinases-2 (MMP-2). GFP was successfully expressed by BM-MSCs in vitro. At 14 days after cell transplantation the GFP-positive cells could not be detected via confocal microscopy. By using a GFP antibody, distinct GFP-positive cells could be seen and quantitative analysis showed that the expression volume of GFP was 6.42 ± 0.92 mm(3) after 3 days, 1.24 ± 0.76 mm(3) after 7 days, 0.33 ± 0.03 mm(3) after 14 days, and 0.09 ± 0.05 mm(3) after 28 days. GFP labeling did not adversely affect the paracrine actions of BM-MSCs. GFP labeling could be used to track MSC distribution and their fate for at least 28 days after delivery to rat hearts with myocardial infarction, and this stem cell tracking strategy did not adversely affect the paracrine actions of BM-MSCs.
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Potential of mesenchymal stem cell applications in plastic and reconstructive surgery. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2012; 130:55-67. [PMID: 23128957 DOI: 10.1007/10_2012_162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
: Novel therapy with mesenchymal stem cells from bone marrow, adipose tissue, or other sources has raised high hopes for treatment of a variety of diseases. For plastic and reconstructive surgery, first pilot studies and clinical trials using stem cells for treatment of chronic wounds, radiation injury, or soft tissue augmentation have furnished encouraging results compared with the limitations of standard therapy, for example autologous fat grafting. Further research must be conducted to reveal the complex physiological interactions between activated stem cells and the host environment. Long-term effects and safety aspects of these novel treatment options also require randomized controlled studies. For future clinical applications, guidelines and standardized procedures for stem cell isolation and preparation, and techniques for application must be established.
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Adipose derived stem cells: efficiency, toxicity, stability of BrdU labeling and effects on self-renewal and adipose differentiation. Mol Cell Biochem 2011; 351:65-75. [PMID: 21246262 DOI: 10.1007/s11010-011-0712-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Accepted: 01/04/2011] [Indexed: 12/30/2022]
Abstract
5-bromo-2-deoxyurudine (BrdU) can be used as a methodological tool for in vivo investigations following in vitro prelabeling of isolated stem cells for subsequent cell tracking within the recipient host. The objective of this study was to determine how useful BrdU may be as a labeling modality for adipose derived stem cells (ASC) by examining BrdU toxicity, BrdU intracellular stability, and potential effects on ASC differentiation. Porcine and human ASC (pASC and hASC, respectively) were labeled with BrdU at 5 or 10 μM for 2, 6, 24, and 48 h. BrdU toxicity and stability over time in monolayer cultures, in 3-D collagen scaffolds implanted to a porcine model and after thawing from long-term storage were evaluated by MTT assays and immunohistochemistry. ASC differentiation was evaluated by Oil Red O staining. BrdU was not cytotoxic at all tested concentrations and incubation times. BrdU color intensity within each cell and the number of ASC labeled with BrdU decreased as a function of both incubation time and BrdU concentrations. Labeling intensities decreased over time and were undetectable after 6 passages for pASC and 4 passages for hASC. In 3-D scaffolds, BrdU-labeled ASC were identifiable after 90 days of in vitro cultures and for 30 days in a porcine model. BrdU did not prevent preadipocyte differentiation and BrdU labeling was still detectable after subsequent thawing after long-term storage of ASC. BrdU is an excellent candidate reagent to label and track ASC that will allow distinction between BrdU-labeled donor cells and host cells. The data provides a foundation for conducting future tissue engineering projects using BrdU-labeled ASC.
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Strohhöfer C, Förster T, Chorvát D, Kasák P, Lacík I, Koukaki M, Karamanou S, Economou A. Quantitative analysis of energy transfer between fluorescent proteins in CFP–GBP–YFP and its response to Ca2+. Phys Chem Chem Phys 2011; 13:17852-63. [DOI: 10.1039/c1cp21088b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Abstract
Neonephrogenesis, the capacity to regenerate renal tissue, is a distinctive feature of fish but not usually of mammals. However, evidence exists for kidney repair in response to insulting agents for animals and human beings. Studies have therefore been designed in the past few years to clarify the cellular and molecular basis of renal repair, with the aim to investigate the potential regenerative capacity of animal and human kidneys. Three main questions are being addressed by this research: whether terminally differentiated cells in adult animal kidneys have regenerative capacity; whether multipotent progenitor cells exist in kidneys; and whether renal repair can be favoured or accelerated by cells of extrarenal origin migrating to the kidney in response to injury. In this Review, we describe evidence of cellular and molecular pathways related to renal repair and regeneration, and review data from animal and human studies that show that the kidney might have regenerative capacity.
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Affiliation(s)
- Ariela Benigni
- Mario Negri Institute for Pharmacological Research, Bergamo, Italy.
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20
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Pettersson J, Lobov S, Novikova LN. Labeling of olfactory ensheathing glial cells with fluorescent tracers for neurotransplantation. Brain Res Bull 2010; 81:125-32. [PMID: 19828127 DOI: 10.1016/j.brainresbull.2009.10.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2009] [Revised: 09/28/2009] [Accepted: 10/05/2009] [Indexed: 01/05/2023]
Abstract
Development of cell-based treatment strategies for repair of the injured nervous system requires cell tracing techniques to follow the fate of transplanted cells and their interaction with the host tissue. The present study investigates the efficacy of fluorescent cell tracers Fast Blue, PKH26, DiO and CMFDA for long-term labeling of olfactory ensheathing glial cells (OEC) in culture and following transplantation into the rat spinal cord. All tested dyes produced very efficient initial labeling of p75-positive OEC in culture. The number of Fast Blue-positive cells remained largely unchanged during the first 4 weeks but only about 21% of the cells retained tracer 6 weeks after labeling. In contrast, the number of cells labeled with PKH26 and DiO was reduced to 51-55% after 2 weeks in culture and reached 8-12% after 4-6 weeks. CMFDA had completely disappeared from the cells 2 weeks after labeling. AlamarBlue assay showed that among four tested tracers only CMFDA reduced proliferation rate of the OEC. After transplantation into spinal cord, Fast Blue-labeled OEC survived for at least 8 weeks but demonstrated very limited migration from the injection sites. Additional immunostaining with glial and neuronal markers revealed signs of dye leakage from the transplanted cells resulted in weak labeling of microglia and spinal neurons. The results show that Fast Blue is an efficient cell marker for cultured OEC. However, transfer of the dye from the transplanted cells to the host tissue should be considered and correctly interpreted.
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Affiliation(s)
- Jonas Pettersson
- Department of Integrative Medical Biology, Section of Anatomy, Umeå University, SE-901 87 Umeå, Sweden
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21
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Shin JH, Kim KH, Kim SH, Koo KT, Kim TI, Seol YJ, Ku Y, Rhyu IC, Chung CP, Lee YM. Ex vivo bone morphogenetic protein-2 gene delivery using gingival fibroblasts promotes bone regeneration in rats. J Clin Periodontol 2010; 37:305-11. [DOI: 10.1111/j.1600-051x.2009.01522.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Abstract
Increasing interest in the potential of adult stem cells in regenerative medicine has led to numerous studies focused on the identification of endogenous renal stem cells within the mature mammalian kidney. A variety of approaches have been taken to identify such cells, including physical location, cell surface marker expression, and functional properties. Proof of clonogenicity or renal potential remains questionable, and few such populations have been characterized in humans; however, recent evidence that even podocytes, a cell type with limited proliferative capacity under normal conditions, are constantly regenerated from a population within the Bowman's capsule has breathed new life into the quest for a renal stem cell. Here we examine whether current evidence is sufficient to conclude such a population does indeed exist or whether the jury is still out. We also ask which properties we would wish such a cell to possess to allow for repair of the diseased kidney.
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Affiliation(s)
- Melissa H Little
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Qld, Australia.
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Bernsen MR, Moelker AD, Wielopolski PA, van Tiel ST, Krestin GP. Labelling of mammalian cells for visualisation by MRI. Eur Radiol 2009; 20:255-74. [DOI: 10.1007/s00330-009-1540-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 06/11/2009] [Accepted: 06/23/2009] [Indexed: 12/21/2022]
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24
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Walker PA, Shah SK, Harting MT, Cox CS. Progenitor cell therapies for traumatic brain injury: barriers and opportunities in translation. Dis Model Mech 2009; 2:23-38. [PMID: 19132123 PMCID: PMC2615170 DOI: 10.1242/dmm.001198] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Traumatic brain injury (TBI) directly affects nearly 1.5 million new patients per year in the USA, adding to the almost 6 million cases in patients who are permanently affected by the irreversible physical, cognitive and psychosocial deficits from a prior injury. Adult stem cell therapy has shown preliminary promise as an option for treatment, much of which is limited currently to supportive care. Preclinical research focused on cell therapy has grown significantly over the last decade. One of the challenges in the translation of this burgeoning field is interpretation of the promising experimental results obtained from a variety of cell types, injury models and techniques. Although these variables can become barriers to a collective understanding and to evidence-based translation, they provide crucial information that, when correctly placed, offers the opportunity for discovery. Here, we review the preclinical evidence that is currently guiding the translation of adult stem cell therapy for TBI.
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Affiliation(s)
- Peter A. Walker
- Department of Pediatric Surgery, University of Texas Medical School at Houston, Houston, TX 77030, USA
| | - Shinil K. Shah
- Department of Pediatric Surgery, University of Texas Medical School at Houston, Houston, TX 77030, USA
| | - Matthew T. Harting
- Department of Pediatric Surgery, University of Texas Medical School at Houston, Houston, TX 77030, USA
| | - Charles S. Cox
- Department of Pediatric Surgery, University of Texas Medical School at Houston, Houston, TX 77030, USA
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25
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Li X, Wang Y, Sharif-Afshar AR, Uwamariya C, Yi A, Ishii K, Hayward SW, Matusik RJ, Bhowmick NA. Urothelial transdifferentiation to prostate epithelia is mediated by paracrine TGF-beta signaling. Differentiation 2008; 77:95-102. [PMID: 19281768 DOI: 10.1016/j.diff.2008.09.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 07/18/2008] [Accepted: 07/23/2008] [Indexed: 02/08/2023]
Abstract
The embryonic urogenital sinus mesenchyme (UGM) induces prostate epithelial morphogenesis in development. The molecular signals that drive UGM-mediated prostatic induction have not been defined. We hypothesized that the TGF-beta signaling directed the prostatic induction. UGM from TGF-beta type II receptor stromal conditional knockout mice (Tgfbr2(fspKO)) or control mice (Tgfbr2(floxE2/floxE2)) was recombined with wild-type adult mice bladder urothelial cells. The resulting urothelium associated with Tgfbr2(floxE2/floxE2) UGM was instructively differentiated into prostatic epithelium, as expected. In contrast, the urothelium associated with Tgfbr2(fspKO) UGM permissively maintained the phenotype of bladder epithelial cells. Microarray analysis of UGM tissues suggested the down-regulation of multiple Wnt ligands and the up-regulation of the Wnt antagonist, Wif 1, by the Tgfbr2(fspKO) UGM compared with Tgfbr2(floxE2/floxE2) UGM. The overexpression of Wif-1 by wild-type UGM resulted in the inhibition of prostatic induction. These data suggest that the stromal TGF-beta activity mediated by paracrine Wnt is necessary for the induction of prostatic differentiation. As Wnt ligands mediate differentiation and maintain the stem cell phenotype, the contribution of mouse stem cells and somatic cells to prostatic epithelium in the tissue recombination models was tested. The directed differentiation of mouse embryonic stem cells by UGM is suggested by a threshold number of mouse stem cells required in prostatic differentiation. To determine the contribution of somatic cells, the adult bladder epithelial compartment was labeled with green-fluorescent vital dye (CMFDA) and the stem-like cells marked by bromodeoxyuridine (BrdU) label-retention. The resulting prostatic epithelia of the tissue recombinants maintained the CMFDA dye, suggesting minimal cell division. Thus, the UGM can induce endoderm-derived epithelia and stem cells to form prostate through a transdifferentiation mechanism that requires stromal TGF-beta signaling to mediate epithelial Wnt activity.
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Affiliation(s)
- Xiaohong Li
- Department of Urologic Surgery, Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN 37232-2765, USA
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26
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Houlihan DD, Newsome PN. Critical review of clinical trials of bone marrow stem cells in liver disease. Gastroenterology 2008; 135:438-50. [PMID: 18585384 DOI: 10.1053/j.gastro.2008.05.040] [Citation(s) in RCA: 154] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Revised: 04/15/2008] [Accepted: 05/08/2008] [Indexed: 12/23/2022]
Abstract
Morbidity and mortality from cirrhosis is increasing rapidly in the Western world. Currently the only effective treatment is liver transplantation, an increasingly limited and expensive resource. Consequently, there has been great hope that stem cells may offer new therapeutic approaches in the management of liver disease. In this review we critically appraise the 11 published clinical studies of bone marrow stem cells in liver disease, and focus on the unresolved issues regarding their role. We outline the different mechanisms by which stem cells may impact on liver disease, as well as highlight the importance of the type of stem cell chosen. There are multiple different stem cell populations that have, in rodent studies, been shown to have differing effects on liver regeneration and fibrogenesis/degradation. Thus, choice of cell should reflect the desired or expected mechanism of action. The importance, and methods, of studying the fate of stem cells infused in clinical studies is emphasized as we seek to translate observations in rodents into the clinical setting. Finally, we discuss which cohorts of patients with liver disease would benefit from stem cell therapy, as well as establish minimum criteria for future clinical trials of stem cells.
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Affiliation(s)
- Diarmaid Dominic Houlihan
- Liver Research Group, Institute of Biomedical Research, The Medical School, Edgbaston, University of Birmingham, Birmingham, United Kingdom
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