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Ghosh S, Roy P, Lahiri D. Development of Anisotropic Electrically Conductive GNP-Reinforced PCL-Collagen Scaffold for Enhanced Neurogenic Differentiation under Electrical Stimulation. Chem Asian J 2024; 19:e202400061. [PMID: 38547362 DOI: 10.1002/asia.202400061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/20/2024] [Indexed: 04/26/2024]
Abstract
The internal electric field of the human body plays a crucial role in regulating various biological processes, such as, cellular interactions, embryonic development and the healing process. Electrical stimulation (ES) modulates cytoskeleton and calcium ion activities to restore nervous system functioning. When exposed to electrical fields, stem cells respond similarly to neurons, muscle cells, blood vessel linings, and connective tissue (fibroblasts), depending on their environment. This study develops cost-effective electroconductive scaffolds for regenerative therapy. This was achieved by incorporating carboxy functionalized graphene nanoplatelets (GNPs) into a Polycaprolactone (PCL)-collagen matrix. ES was used to assess the scaffolds' propensity to boost neuronal differentiation from MSCs. This study reported that aligned GNP-reinforced PCL-Collagen scaffolds demonstrate substantial MSC differentiation with ES. This work effectively develops scaffolds using a simple, cost-effective synthesis approach. The direct coupling approach generated a homogeneous electric field to stimulate cells cultured on GNP-reinforced scaffolds. The scaffolds exhibited improved mechanical and electrical characteristics, as a result of the reinforcement with carbon nanofillers. In vitro results suggest that electrical stimulation helps differentiation of mesenchymal stem-like cells (MSC-like) towards neuronal. This finding holds great potential for the development of effective treatments for tissue injuries related to the nervous system.
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Affiliation(s)
- Souvik Ghosh
- Biomaterials and Multiscale Mechanics Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand, India
- Molecular Endocrinology Lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand, India
- Centre of Nanotechnology, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand, India
- Present address: Department of Ophthalmology and Visual Sciences, SUNY Upstate Medical University, 13210, Syracuse, NY, USA
| | - Partha Roy
- Molecular Endocrinology Lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand, India
| | - Debrupa Lahiri
- Biomaterials and Multiscale Mechanics Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand, India
- Centre of Nanotechnology, Indian Institute of Technology Roorkee, 247667, Roorkee, Uttarakhand, India
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Toosi S, Naderi-Meshkin H, Moradi A, Daliri M, Moghimi V, Majd HM, Sahebkar AH, Heirani-Tabasi A, Behravan J. Scaphoid Bone Nonunions: Clinical and Functional Outcomes of Collagen/PGA Scaffolds and Cell-Based Therapy. ACS Biomater Sci Eng 2023; 9:1928-1939. [PMID: 36939654 DOI: 10.1021/acsbiomaterials.2c00677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
In this study, the procedure for treating the nonunion complication of scaphoid fractures using collagen/poly glycolic acid (CPGA) scaffolds with bone marrow mesenchymal stem cell (BM-MSC) therapy was adopted and compared with the commonly employed autologous bone tissue graft. With conducting a two-armed clinical trial, 10 patients with scaphoid nonunions were enrolled in this investigation. Patients were randomly assigned to two groups treated with (1) CPGA + cell therapy and (2) autologous iliac crest bone graft standard therapy. Treatment outcomes were evaluated three months after surgery, measuring the grip and pinch strengths and wrist range of motion, with two questionnaires: Patient-Rated Wrist Evaluation (PRWE) and Quick form of Disabilities of the Arm, Shoulder, and Hand (QDASH). We have also assessed the union rate using clinical and radiologic healing criteria one and three months post-operatively. Restorative effects of CPGA + cell therapy were similar to those of the autologous bone graft standard therapy, except for the grip strength (P = 0.048) and QDASH score (P = 0.044) changes, which were higher in the CPGA + cell therapy group. Three months following the surgery, radiographic images and computed tomography (CT) scans also demonstrated that the scaphoid union rate in the test group was comparable to that of scaphoids treated with the standard autograft method. Our findings demonstrate that the CPGA + cell therapy is a potential alternative for bone grafting in the treatment of bone nonunions.
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Affiliation(s)
- Shirin Toosi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Science, Mahhad 9177899191, Iran
| | - Hojjat Naderi-Meshkin
- Stem Cells and Regenerative Medicine Research Group, Academic Center for Education Culture and Research (ACECR), Khorasan Razavi Branch, Mashhad 91775-1376, Iran
| | - Ali Moradi
- Orthopedics Research Center, Mashhad University of Medical Sciences, Mashhad 9177899191, Iran
| | - Mahla Daliri
- Orthopedics Research Center, Mashhad University of Medical Sciences, Mashhad 9177899191, Iran
| | - Vahid Moghimi
- Stem Cells and Regenerative Medicine Research Group, Academic Center for Education Culture and Research (ACECR), Khorasan Razavi Branch, Mashhad 91775-1376, Iran
| | - Hasan-Mehrad Majd
- Clinical Research Unit, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 91388-13944, Iran
| | - Amir Hossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177899191, Iran
| | - Asieh Heirani-Tabasi
- Research Center for Advanced Technologies in Cardiovascular Medicine, Tehran Heart Center Hospital, Tehran University of Medical Sciences, Tehran 14535, Iran
| | - Javad Behravan
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177899191, Iran.,School of Pharmacy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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Raj AT, Kheur S, Bhonde R, Gupta AA, Patil S. Assessing the effect of human mesenchymal stem cell-derived conditioned media on human cancer cell lines: A systematic review. Tissue Cell 2021; 71:101505. [PMID: 33582384 DOI: 10.1016/j.tice.2021.101505] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 01/29/2021] [Accepted: 01/31/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) exhibit differential effect (augmentation or inhibition) on cancer cells depending on the tissue of origin. Given the increasing demand to use MSCs in regenerative medicine, it is vital to ensure that the MSCs being employed are not pro-carcinogenic. OBJECTIVE To assess the effect of human MSC derived conditioned media (CM) on human cancer cell lines. MATERIALS AND METHODS PubMed, SCOPUS, and Web of Science were searched using the keyword combination 'human mesenchymal stem cell and conditioned media and human cancer cell line and in-vitro'. RESULTS MSC-CM pro-carcinogenic molecules were IL-6, IL-8, FGF10, VEGF, PDGF, TGF-b1, IGF-1, GRO-a, OSP, MMPs, TNFα, IL-4, IL-10, IL-13, IL-17, IL-1 β, G-CSF, MCP‑1, MIP‑1α, MIP‑1β, RANTES, MIG, IP‑10, HGFa, ETX, DKK1; anti-carcinogenic molecules were IFN-β, OST, LIGHT, FRTK3, INF-γ, IP-10, LAP, IL‑1RA, IL‑2, IL-5, IL-7, IL-12, IL-15, IFN-α, IFN‑γ. Effector pathways were STAT 1, JAK2/STAT3, Ras-Raf-MEK-ERK, Wnt/β-catenin, NF-κB, ERK1/2, PI3K/ Akt/mTOR, MAPK/ERK. BMSC, ADMSC, UCMSC, WJMSC DPMSC, AMSC, and UTCMSC had a differential effect on carcinogenesis. GMSC, LMSC, FDMSC were anti-carcinogenic. OMSC was pro-carcinogenic. CONCLUSION Use of MSC-CM with a pro-carcinogenic effect must be restricted in cancer patients irrespective of the nature of the application.
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Affiliation(s)
- A Thirumal Raj
- Department of Oral Pathology and Microbiology, Dr. D. Y. Patil Dental College and Hospital, Dr. D. Y. Patil Vidyapeeth, Pune, India.
| | - Supriya Kheur
- Department of Oral Pathology and Microbiology Dr. D. Y. Patil Dental College and Hospital, Dr. D. Y. Patil Vidyapeeth, Pune, India.
| | | | - Archana A Gupta
- Department of Oral Pathology and Microbiology, Dr. D. Y. Patil Dental College and Hospital, Dr. D. Y. Patil Vidyapeeth, Pune, India.
| | - Shankargouda Patil
- Department of Maxillofacial Surgery and Diagnostic Science, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia.
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Liu X, Lian X, Liu X, Du Y, Zhu Y, Hu M, Zhang P, Liu Y, Zhou Y. Aldo-keto reductase family 1 member C1 regulates the osteogenic differentiation of human ASCs by targeting the progesterone receptor. Stem Cell Res Ther 2021; 12:383. [PMID: 34233738 PMCID: PMC8261971 DOI: 10.1186/s13287-021-02425-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 05/27/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND As a promising way to repair bone defect, bone tissue engineering has attracted a lot of attentions from researchers in recent years. Searching for new molecular target to modify the seed cells and enhance their osteogenesis capacity is one of the hot topics in this field. As a member of aldo-keto reductase family, aldo-keto reductase family 1 member C1 (AKR1C1) is reported to associate with various tumors. However, whether AKR1C1 takes part in regulating differentiation of adipose-derived mesenchymal stromal/stem cells (ASCs) and its relationship with progesterone receptor (PGR) remain unclear. METHODS Lost-and-gain-of-function experiments were performed using knockdown and overexpression of AKR1C1 to identify its role in regulating osteogenic and adipogenic differentiation of hASCs in vitro. Heterotypic bone and adipose tissue formation assay in nude mice were used to conduct the in vivo experiment. Plasmid and siRNA of PGR, as well as western blot, were used to clarify the mechanism AKR1C1 regulating osteogenesis. RESULTS Our results demonstrated that AKR1C1 acted as a negative regulator of osteogenesis and a positive regulator of adipogenesis of hASCs via its enzyme activity both in vitro and in vivo. Mechanistically, PGR mediated the regulation of AKR1C1 on osteogenesis. CONCLUSIONS Collectively, our study suggested that AKR1C1 could serve as a regulator of osteogenic differentiation via targeting PGR and be used as a new molecular target for ASCs modification in bone tissue engineering.
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Affiliation(s)
- Xuenan Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Xiaomin Lian
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Xuejiao Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Yangge Du
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Yuan Zhu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Menglong Hu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Ping Zhang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China.
| | - Yunsong Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China.
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
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Kuwahara Y, Yoshizaki K, Nishida H, Kamishina H, Maeda S, Takano K, Fujita N, Nishimura R, Jo JI, Tabata Y, Akiyoshi H. Extracellular Vesicles Derived From Canine Mesenchymal Stromal Cells in Serum Free Culture Medium Have Anti-inflammatory Effect on Microglial Cells. Front Vet Sci 2021; 8:633426. [PMID: 33996963 PMCID: PMC8113404 DOI: 10.3389/fvets.2021.633426] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/24/2021] [Indexed: 12/13/2022] Open
Abstract
Mesenchymal stem/stromal cells (MSCs) have been used as cell sources for treating dogs with naturally-occurring diseases. Extracellular vesicles (EVs) derived from MSCs are now recognized as pivotal to modulating the immune response and supporting tissue repair. Manufacture of MSC-EVs for clinical application mandates removal of the xeno-proteins, including fetal bovine serum. The objective of this study was to examine whether canine MSCs survived and secreted EVs in serum-free medium (SFM) conditions and to assess the immunomodulatory effect of EVs in vitro. Canine MSCs were found to survive and secrete EVs under SFM conditions. The surface markers of MSCs in the SFM were similar to MSCs in complete culture medium. Canine MSC-EVs had a diameter of ~300 nm and were positive for EV markers. MSC-derived EVs from the serum-free condition reduced the levels of IL-1β by BV-2 cells in response to LPS stimulation. These results warrant further studies of the use of SFM for producing EVs derived from canine MSCs.
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Affiliation(s)
- Yukina Kuwahara
- Joint Department of Veterinary Medicine, The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
| | - Karin Yoshizaki
- Department of Veterinary Surgery, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Japan
| | - Hidetaka Nishida
- Department of Veterinary Surgery, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Japan
| | - Hiroaki Kamishina
- Joint Department of Veterinary Medicine, The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
| | - Sadatoshi Maeda
- Joint Department of Veterinary Medicine, The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
| | - Katsura Takano
- Department of Integrative Physiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Japan
| | - Naoki Fujita
- Department of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Ryohei Nishimura
- Department of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Jun-Ichiro Jo
- Laboratory of Biomaterials, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Hideo Akiyoshi
- Department of Veterinary Surgery, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Japan
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Bagheri R, Bitazar R, Talebi S, Alaeddini M, Etemad-Moghadam S, Eini L. Conditioned media derived from mesenchymal stem cells induces apoptosis and decreases cell viability and proliferation in squamous carcinoma cell lines. Gene 2021; 782:145542. [PMID: 33675953 DOI: 10.1016/j.gene.2021.145542] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/26/2021] [Accepted: 02/17/2021] [Indexed: 12/11/2022]
Abstract
Squamous cell carcinoma (SCC) is a relatively common cancer with a low survival rate, poor prognosis and no effective treatment strategy. The use of cell-free conditioned media derived from mesenchymal stem cells (CM-MSCs) has shown promising results in treating various diseases. This study aimed to evaluate the effects of CM-MSCs on proliferation and apoptosis of CAL-27 and FaDu SCC cell lines. CM derived from human bone marrow and human amniotic membrane MSCs (BM-MSCs and AM-MSCs) was used in this investigation. MTT assay demonstrated that CM-BMMSC decreased the viability of CAL-27 and FaDu cell lines, 24, 48, and 72 h after treatment. Quantitative real-time PCR indicated that mRNA expression of PCNA as a proliferative marker, and BCL-2 as an anti-apoptotic protein, decreased in both cell lines treated with CM-BMMSC. Based on the flow cytometry results, the number of positive proliferative Ki67 cells and apoptotic Annexin-V cells decreased and increased in both cell lines treated with CM-BMMSC, respectively. However, CM-AMMSC treatment had both pro-and anti-neoplastic effects in our samples and showed considerable differences between the two cell lines. Taken together, our findings demonstrated that CM-BMMSC and, to a lesser degree, CM-AMMSC decrease cell viability and proliferation and increase cell apoptosis in SCC cell lines in a time-dependent manner. However, further studies are needed, especially to evaluate the anti-tumor potential of CM-BMMSC in vivo.
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Affiliation(s)
- Rezvan Bagheri
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, P.O. Box: 14155-5583, Tehran, Iran; Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, University of Sherbrooke, 3001 North 12th Avenue, Sherbrooke, QC J1H 5N4, Canada
| | - Razieh Bitazar
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, P.O. Box: 14155-5583, Tehran, Iran
| | - Saeed Talebi
- Department of Medical Genetics and Molecular Biology, School of Medicine, Iran University of Medical Sciences, P.O. Box: 1449614525, Tehran, Iran
| | - Mojgan Alaeddini
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, P.O. Box: 14155-5583, Tehran, Iran
| | - Shahroo Etemad-Moghadam
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, P.O. Box: 14155-5583, Tehran, Iran
| | - Leila Eini
- Division of Histology, Department of Basic Science, Faculty of Veterinary Medicine, Science and Research Branch, Islamic Azad University, P.O. Box: 1477893855, Tehran, Iran.
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Mota SM, Rogers RE, Haskell AW, McNeill EP, Kaunas R, Gregory CA, Giger ML, Maitland KC. Automated mesenchymal stem cell segmentation and machine learning-based phenotype classification using morphometric and textural analysis. J Med Imaging (Bellingham) 2021; 8:014503. [PMID: 33542945 PMCID: PMC7849042 DOI: 10.1117/1.jmi.8.1.014503] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 01/11/2021] [Indexed: 01/22/2023] Open
Abstract
Purpose: Mesenchymal stem cells (MSCs) have demonstrated clinically relevant therapeutic effects for treatment of trauma and chronic diseases. The proliferative potential, immunomodulatory characteristics, and multipotentiality of MSCs in monolayer culture is reflected by their morphological phenotype. Standard techniques to evaluate culture viability are subjective, destructive, or time-consuming. We present an image analysis approach to objectively determine morphological phenotype of MSCs for prediction of culture efficacy. Approach: The algorithm was trained using phase-contrast micrographs acquired during the early and mid-logarithmic stages of MSC expansion. Cell regions are localized using edge detection, thresholding, and morphological operations, followed by cell marker identification using H-minima transform within each region to differentiate individual cells from cell clusters. Clusters are segmented using marker-controlled watershed to obtain single cells. Morphometric and textural features are extracted to classify cells based on phenotype using machine learning. Results: Algorithm performance was validated using an independent test dataset of 186 MSCs in 36 culture images. Results show 88% sensitivity and 86% precision for overall cell detection and a mean Sorensen-Dice coefficient of 0.849 ± 0.106 for segmentation per image. The algorithm exhibited an area under the curve of 0.816 (CI 95 = 0.769 to 0.886) and 0.787 (CI 95 = 0.716 to 0.851) for classifying MSCs according to their phenotype at early and mid-logarithmic expansion, respectively. Conclusions: The proposed method shows potential to segment and classify low and moderately dense MSCs based on phenotype with high accuracy and robustness. It enables quantifiable and consistent morphology-based quality assessment for various culture protocols to facilitate cytotherapy development.
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Affiliation(s)
- Sakina M. Mota
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
| | - Robert E. Rogers
- Texas A&M Health Science Center, College of Medicine, Bryan, Texas, United States
| | - Andrew W. Haskell
- Texas A&M Health Science Center, College of Medicine, Bryan, Texas, United States
| | - Eoin P. McNeill
- Texas A&M Health Science Center, College of Medicine, Bryan, Texas, United States
| | - Roland Kaunas
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
- Texas A&M Health Science Center, College of Medicine, Bryan, Texas, United States
| | - Carl A. Gregory
- Texas A&M Health Science Center, College of Medicine, Bryan, Texas, United States
| | - Maryellen L. Giger
- University of Chicago, Department of Radiology, Committee on Medical Physics, Chicago, Illinois, United States
| | - Kristen C. Maitland
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
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Zhu Y, Zhang X, Gu R, Liu X, Wang S, Xia D, Li Z, Lian X, Zhang P, Liu Y, Zhou Y. LAMA2 regulates the fate commitment of mesenchymal stem cells via hedgehog signaling. Stem Cell Res Ther 2020; 11:135. [PMID: 32213190 PMCID: PMC7093965 DOI: 10.1186/s13287-020-01631-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/18/2020] [Accepted: 03/02/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Bone defects are a common clinical condition that has gained an increasing amount of attention in recent years. Causes of bone defect include tumors, inflammation, and fractures. Bone tissue engineering is a novel treatment of bone defect, and human mesenchymal stem cells (hMSCs) are the ideal seed cells for bone tissue engineering due to their multi-lineage differentiation potential and immunogenicity. The laminin α2 (LAMA2) gene encodes the α2 subunit of laminins. Mutations in this gene have been reported to cause muscular dystrophy, but thus far no studies have elucidated the role of LAMA2 in the fate choices of MSCs. Here, we aimed to investigate the critical role of LAMA2 in the osteogenesis and adipogenesis of mesenchymal stem cells (MSCs). METHODS We investigated LAMA2 function in osteogenic and adipogenic differentiation of MSCs in vitro and in vivo through loss- and gain-of-function experiments. In addition, molecular mechanism was clarified by Western blot and siRNA. RESULTS Our results demonstrated that LAMA2 was a critical regulator for fate commitment of MSCs. Both in vitro and in vivo studies indicate that LAMA2 inhibits osteogenesis and promotes adipogenesis. Mechanistically, we found that LAMA2 regulated osteogenesis and adipogenesis of MSCs by modulating the hedgehog signaling pathway. CONCLUSIONS The present work confirms that LAMA2 is a new molecular target for MSC-based bone regeneration.
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Affiliation(s)
- Yuan Zhu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Xiao Zhang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Ranli Gu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Xuenan Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Siyi Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Dandan Xia
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Zheng Li
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Xiaomin Lian
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Ping Zhang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China.
| | - Yunsong Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China.
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
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9
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Live Simultaneous Monitoring of Mineral Deposition and Lipid Accumulation in Differentiating Stem Cells. Biomimetics (Basel) 2019; 4:biomimetics4030048. [PMID: 31295946 PMCID: PMC6784299 DOI: 10.3390/biomimetics4030048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/22/2019] [Accepted: 07/04/2019] [Indexed: 11/17/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are progenitors for bone-forming osteoblasts and lipid-storing adipocytes, two major lineages co-existing in bone marrow. When isolated in vitro, these stem cells recapitulate osteoblast or adipocyte formation if treated with specialised media, modelling how these lineages interact in vivo. Osteogenic differentiation is characterised by mineral deposits accumulating in the extracellular matrix, typically assessed using histological techniques. Adipogenesis occurs with accumulation of intracellular lipids that can be routinely visualised by Oil Red O staining. In both cases, staining requires cell fixation and is thus limited to end-point assessments. Here, a vital staining approach was developed to simultaneously detect mineral deposits and lipid droplets in differentiating cultures. Stem cells induced to differentiate produced mixed cultures containing adipocytes and bone-like nodules, and after two weeks live cultures were incubated with tetracycline hydrochloride and Bodipy to label mineral- and lipid-containing structures, respectively. Fluorescence microscopy showed the simultaneous visualisation of mineralised areas and lipid-filled adipocytes in live cultures. Combined with the nuclear stain Hoechst 33258, this approach further enabled live confocal imaging of adipogenic cells interspersed within the mineralised matrix. This multiplex labelling was repeated at subsequent time-points, demonstrating the potential of this new approach for the real-time high-precision imaging of live stem cells.
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Zhang B, Zhang PB, Wang ZL, Lyu ZW, Wu H. Tissue-engineered composite scaffold of poly(lactide-co-glycolide) and hydroxyapatite nanoparticles seeded with autologous mesenchymal stem cells for bone regeneration. J Zhejiang Univ Sci B 2018; 18:963-976. [PMID: 29119734 DOI: 10.1631/jzus.b1600412] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE A new therapeutic strategy using nanocomposite scaffolds of grafted hydroxyapatite (g-HA)/ poly(lactide-co-glycolide) (PLGA) carried with autologous mesenchymal stem cells (MSCs) and bone morphogenetic protein-2 (BMP-2) was assessed for the therapy of critical bone defects. At the same time, tissue response and in vivo mineralization of tissue-engineered implants were investigated. METHODS A composite scaffold of PLGA and g-HA was fabricated by the solvent casting and particulate-leaching method. The tissue-engineered implants were prepared by seeding the scaffolds with autologous bone marrow MSCs in vitro. Then, mineralization and osteogenesis were observed by intramuscular implantation, as well as the repair of the critical radius defects in rabbits. RESULTS After eight weeks post-surgery, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) revealed that g-HA/PLGA had a better interface of tissue response and higher mineralization than PLGA. Apatite particles were formed and varied both in macropores and micropores of g-HA/PLGA. Computer radiographs and histological analysis revealed that there were more and more quickly formed new bone formations and better fusion in the bone defect areas of g-HA/PLGA at 2-8 weeks post-surgery. Typical bone synostosis between the implant and bone tissue was found in g-HA/PLGA, while only fibrous tissues formed in PLGA. CONCLUSIONS The incorporation of g-HA mainly improved mineralization and bone formation compared with PLGA. The application of MSCs can enhance bone formation and mineralization in PLGA scaffolds compared with cell-free scaffolds. Furthermore, it can accelerate the absorption of scaffolds compared with composite scaffolds.
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Affiliation(s)
- Bing Zhang
- Department of Clinical Laboratory, Second Hospital of Jilin University, Changchun 130041, China
| | - Pei-Biao Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Zong-Liang Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Zhong-Wen Lyu
- Department of Radiology, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Han Wu
- Department of Orthopedics, China-Japan Union Hospital of Jilin University, Changchun 130033, China
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Mesenchymal Stem Cells Derived from Healthy and Diseased Human Gingiva Support Osteogenesis on Electrospun Polycaprolactone Scaffolds. Bioengineering (Basel) 2018; 5:bioengineering5010008. [PMID: 29360752 PMCID: PMC5874874 DOI: 10.3390/bioengineering5010008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 01/17/2018] [Accepted: 01/18/2018] [Indexed: 12/15/2022] Open
Abstract
Periodontitis is a chronic inflammatory disease affecting almost half of the adult US population. Gingiva is an integral part of the periodontium and has recently been identified as a source of adult gingiva-derived mesenchymal stem cells (GMSCs). Given the prevalence of periodontitis, the purpose of this study is to evaluate differences between GMSCs derived from healthy and diseased gingival tissues and explore their potential in bone engineering. Primary clonal cell lines were established from harvested healthy and diseased gingival and characterized for expression of known stem-cell markers and multi-lineage differentiation potential. Finally, they were cultured on electrospun polycaprolactone (PCL) scaffolds and evaluated for attachment, proliferation, and differentiation. Flow cytometry demonstrated cells isolated from healthy and diseased gingiva met the criteria defining mesenchymal stem cells (MSCs). However, GMSCs from diseased tissue showed decreased colony-forming unit efficiency, decreased alkaline phosphatase activity, weaker osteoblast mineralization, and greater propensity to differentiate into adipocytes than their healthy counterparts. When cultured on electrospun PCL scaffolds, GMSCs from both sources showed robust attachment and proliferation over a 7-day period; they exhibited high mineralization as well as strong expression of alkaline phosphatase. Our results show preservation of ‘stemness’ and osteogenic potential of GMSC even in the presence of disease, opening up the possibility of using routinely discarded, diseased gingival tissue as an alternate source of adult MSCs.
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Ghasemzadeh M, Hosseini E, Ahmadi M, Kamalizad M, Amirizadeh N. Comparable osteogenic capacity of mesenchymal stem or stromal cells derived from human amnion membrane and bone marrow. Cytotechnology 2018; 70:729-739. [PMID: 29305674 DOI: 10.1007/s10616-017-0177-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 12/02/2017] [Indexed: 12/15/2022] Open
Abstract
So far, substantial attentions have been attracted to the application of mesenchymal stem or stromal cells (MSCs) in different therapeutic approaches. Although human bone marrow is commonly considered as a major source for MSCs, having an invasive collection method, ethical consideration and donor availability create a challenge for scientists, leading them to explore better alternative sources for MSCs. The study presented here aimed to characterize and compare osteogenic capacity of MSCs obtained from the amnion membrane (AM) with those originated from BM. Cells isolated from AMs and BMs were cultured in DMEM-low glucose supplemented with FBS, penicillin and streptomycin. After 24 h of incubation, cells adhered to the plastic surface of the flasks were allowed to proliferate for more days. A sub-confluent culture of cells was trypsinized and re-cultured. The MSCs were characterized by the expression of specific markers with flow cytometry. The osteogenic differentiation of MSCs was also validated by alkaline phosphatase and alizarian red S staining. Our results showed comparable expression of MSCs specific markers for both MSC sources (AM and BM). We also showed the optimum osteogenic differentiation of MSCs from both sources whereas hAM-MSCs revealed higher proliferation rate. We found no essential immunophenotypic differences between MSCs originated from bone marrow and amnion membrane while their differentiations into osteoblastic linage were also comparable. This was in addition to the higher proliferation rate observed for hAM-MSCs which suggests hAM as an easily accessible and reliable source of MSCs applicable for bone engineering, regenerative medicine or other therapeutic approaches.
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Affiliation(s)
- Mehran Ghasemzadeh
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Iranian Blood Transfusion Organization Building, Hemmat Express Way, Next to the Milad Tower, Tehran, 14665-1157, Iran
| | - Ehteramolsadat Hosseini
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Iranian Blood Transfusion Organization Building, Hemmat Express Way, Next to the Milad Tower, Tehran, 14665-1157, Iran.
| | - Mohammadhossein Ahmadi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Iranian Blood Transfusion Organization Building, Hemmat Express Way, Next to the Milad Tower, Tehran, 14665-1157, Iran
| | - Maedeh Kamalizad
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Iranian Blood Transfusion Organization Building, Hemmat Express Way, Next to the Milad Tower, Tehran, 14665-1157, Iran
| | - Naser Amirizadeh
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Iranian Blood Transfusion Organization Building, Hemmat Express Way, Next to the Milad Tower, Tehran, 14665-1157, Iran
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Alves EGL, Serakides R, Rosado IR, Boeloni JN, Ocarino NM, Rezende CMDF. ISOLAMENTO E CULTIVO DE CÉLULAS TRONCO MESENQUIMAIS EXTRAÍDAS DO TECIDO ADIPOSO E DA MEDULA ÓSSEA DE CÃES. CIÊNCIA ANIMAL BRASILEIRA 2017. [DOI: 10.1590/1089-6891v18e-34050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Resumo Objetivou-se estabelecer um protocolo para extração, cultivo e expansão de células tronco mesenquimais (CTM), utilizando-se 3,0 mL da medula óssea e 3,0 cm3 de tecido adiposo do subcutâneo de três cães machos com seis meses de idade. As amostras foram processadas e as células extraídas e cultivadas em DMEM. Para comprovação do isolamento de CTM, procedeu-se a caracterização fenotípica e a diferenciação osteogênica, adipogênica e condrogênica. As células isoladas apresentaram morfologia alongada e fusiforme e capacidade de se diferenciar em osteoblastos, adipócitos e condrócitos. A caracterização fenotípica revelou alta expressão de marcadores de CTM CD90 (80,04%) e CD29 (96%) nas células de origem medular e CD90 (60,94%) e CD29 (77,08%) nas de origem adiposa. A expressão de marcadores hematopoiéticos foi baixa tanto nas células de origem medular CD45 (1,45%) e CD34 (1,53%), quanto nas de origem adiposa CD45 (1,45%) e CD34 (1,53%). As modificações e adaptações realizadas nos protocolos clássicos simplificaram o processo e foram eficientes, permitindo o isolamento e cultivo de CTM da medula óssea e do tecido adiposo de cães.
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Coffin ST, Gaudette GR. Aprotinin extends mechanical integrity time of cell-seeded fibrin sutures. J Biomed Mater Res A 2016; 104:2271-9. [PMID: 27101153 DOI: 10.1002/jbm.a.35754] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 04/07/2016] [Accepted: 04/19/2016] [Indexed: 11/07/2022]
Abstract
Cell therapy has the potential to treat different pathologies, including myocardial infarctions (heart attacks), although cell engraftment remains elusive with most delivery methods. Biological sutures composed of fibrin have been shown to effectively deliver human mesenchymal stem cell (MSC) to infarcted hearts. However, human MSCs rapidly degrade fibrin making cell seeding and delivery time sensitive. To delay the degradation process, we propose using Aprotinin, a proteolytic enzyme inhibitor that has been shown to slow fibrinolysis. Human MSCs seeded on fibrin sutures and incubated with Aprotinin demonstrated similar cell viability, examined using a LIVE/DEAD stain, to controls. No differences in proliferation, as determined by Ki-67 presence, were observed. Human MSCs incubated in Aprotinin differentiated into adipocytes, osteocytes, and chondrocytes, confirming multipotency. The number of cells adhered to fibrin sutures increased through Aprotinin supplementation at 2, 3, and 5 day time points. Uniaxial tensile testing was used to examine the effect of Aprotinin on suture integrity. Sutures exposed to Aprotinin had higher ultimate tensile strength and modulus when compared to sutures exposed to standard growth media. Fibrin sutures incubated in Aprotinin had larger diameters and less fibrin degradation products compared to the controls, confirming decreased fibrinolysis. These data suggest that Aprotinin can reduce degradation of fibrin sutures without significant effects on MSC function, providing a novel method for extending the implantation window and increasing the number of cells delivered via fibrin sutures. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 2271-2279, 2016.
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Affiliation(s)
- Spencer T Coffin
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, 01609
| | - Glenn R Gaudette
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, 01609
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Goldshmid R, Mironi-Harpaz I, Shachaf Y, Seliktar D. A method for preparation of hydrogel microcapsules for stem cell bioprocessing and stem cell therapy. Methods 2015; 84:35-43. [PMID: 25931428 DOI: 10.1016/j.ymeth.2015.04.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 04/20/2015] [Accepted: 04/21/2015] [Indexed: 11/16/2022] Open
Abstract
A method for the preparation of suspension culture microcapsules used in the bioprocessing of human mesenchymal stem cells (hMSCs) is reported. The microcapsules are prepared from a semi-synthetic hydrogel comprising Pluronic®F127 conjugated to denatured fibrinogen. The Pluronic-fibrinogen adducts display a lower critical solubility temperature (LCST) at ∼30 °C, thus enabling mild, cell-compatible physical crosslinking of the microcapsules in a warm gelation bath. Cell-laden microgels were prepared from a solution of Pluronic-fibrinogen hydrogel precursor and hMSCs; these were cultivated for up to 15 days in laboratory-scale suspension bioreactors and harvested by reducing the temperature of the microcapsules to disassemble the physical polymer network. The viability, proliferation and cell recovery yields of the hMSCs were shown to be better than photo-chemically crosslinked microcapsules made from a similar material. The cell culture yields, which exceeded 300% after 15 days in suspension culture, were comparable to other microcarrier systems used for the mass production of hMSCs. The simplicity of this methodology, both in terms of the cell inoculation and mild recovery conditions, represent distinct advantages for stem cell bioprocessing with suspension culture bioreactors.
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Affiliation(s)
- Revital Goldshmid
- The Faculty of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel; The Interdisciplinary Program for Biotechnology, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Iris Mironi-Harpaz
- The Faculty of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Yonatan Shachaf
- The Faculty of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Dror Seliktar
- The Faculty of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel.
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16
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Lotfy A, Salama M, Zahran F, Jones E, Badawy A, Sobh M. Characterization of mesenchymal stem cells derived from rat bone marrow and adipose tissue: a comparative study. Int J Stem Cells 2014; 7:135-42. [PMID: 25473451 PMCID: PMC4249896 DOI: 10.15283/ijsc.2014.7.2.135] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2014] [Indexed: 01/08/2023] Open
Abstract
Background and Objectives: Stem cell technology offers a new hope for many chronic disorders patients. The types of stem cells are different with many differences existing between each type. Mesenchymal stem cells (MSCs) represent one type of adult stem cells that can be easily isolated, then re-transplanted to the patients. This offers potential for their future application in treating many disorders without fear of rejection possibility. MSCs can be isolated from different sources e.g. bone marrow (BMSCs) and adipose tissue (ADSCs). In the present study we compared BMSCs and ADSCs isolated from Sprague-Dawley rats. Methods and Results: For this comparison, immunophenotyping, the analysis of growth rates, proliferation by colony forming unit-fibroblast assay, population doubling time, and trilineage differentiation assays were performed for both BMSCs and ADSCs. The findings revealed that despite no difference in immunphenotypic character between BMSC and ADSC, a better proliferative capacity was observed for ADSCs which would advocate their better use in regenerative applications. On the other hand, BMSCs showed more potential for osteogenic and chondrogenic differentiation. Conclusions: Our study showed that, despite many similarities between both types of cells, there are differences existing which can offer assistance on choosing type of cell to be used in specific diseases. Although ADSCs seem more promising for regenerative application generally, BMSCs may represent a better choice for treating bone disorders.
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Affiliation(s)
- Ahmed Lotfy
- Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Mansoura ; Center of Excellence for Stem Cells and Regenerative Medicine (CESCRM), Zewail City of Science and Technology
| | - Mohamed Salama
- Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Mansoura
| | - Faten Zahran
- Biochemistry Department, Faculty of Science, Zagazig University, Egypt
| | - Elena Jones
- Leeds Institute of Rheumatic and Musculskeletal Medicine, University of Leeds, Leeds, UK
| | - Ahmed Badawy
- Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Mansoura
| | - Mohamed Sobh
- Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Mansoura
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17
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El Alami M, Viña-Almunia J, Gambini J, Mas-Bargues C, Siow RCM, Peñarrocha M, Mann GE, Borrás C, Viña J. Activation of p38, p21, and NRF-2 mediates decreased proliferation of human dental pulp stem cells cultured under 21% O2. Stem Cell Reports 2014; 3:566-73. [PMID: 25358785 PMCID: PMC4223702 DOI: 10.1016/j.stemcr.2014.08.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 08/04/2014] [Accepted: 08/05/2014] [Indexed: 02/08/2023] Open
Abstract
High rates of stem cell proliferation are important in regenerative medicine and in stem cell banking for clinical use. Ambient oxygen tensions (21% O2) are normally used for in vitro culture, but physiological levels in vivo range between 3% and 6% O2. We compared proliferation of human dental pulp stem cells (hDPSCs) cultured under 21% versus 3% O2. The rate of hDPSC proliferation is significantly lower at 21% O2 compared to physiological oxygen levels due to enhanced oxidative stress. Under 21% O2, increased p38 phosphorylation led to activation of p21. Increased generation of reactive oxygen species and p21 led to activation of the NRF-2 signaling pathway. The upregulation of NRF-2 antioxidant defense genes under 21% O2 may interact with cell-cycle-related proteins involved in regulating cell proliferation. Activation of p38/p21/NRF-2 in hDPSCs cultured under ambient oxygen tension inhibits stem cell proliferation and upregulates NRF-2 antioxidant defenses. hDPSC proliferation rate is significantly lower at 21% O2 than at 3% O2 This is due to increased levels oxidative stress at 21% O2 Oxidative stress activates the cell signaling pathway p38 →p21 → NRF-2
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Affiliation(s)
- Marya El Alami
- Department of Physiology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
| | - Jose Viña-Almunia
- Department of Odontology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
| | - Juan Gambini
- Department of Physiology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
| | - Cristina Mas-Bargues
- Department of Physiology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
| | - Richard C M Siow
- Cardiovascular Division, British Heart Foundation Centre of Research Excellence, School of Medicine, King's College London, London SE1 9NH, UK
| | - Miguel Peñarrocha
- Department of Odontology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
| | - Giovanni E Mann
- Cardiovascular Division, British Heart Foundation Centre of Research Excellence, School of Medicine, King's College London, London SE1 9NH, UK
| | - Consuelo Borrás
- Department of Physiology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
| | - Jose Viña
- Department of Physiology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain.
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Abstract
MSC have been used in diverse animal disease models to investigate their regenerative capacity. Although the clinical outcome was often encouraging, the mode of action of the cells remains unresolved. Differentiation of MSC into cell types of their target organs was only rarely shown, with the exception of the musculoskeletal system. Thus, the effect of the cells on the clinical outcome in several disease models of tissue degeneration must be independent of trans-differentiation and caused by indirect or paracrine effects. Furthermore, tracking of the cells in vivo revealed that only a small proportion of the cells home and persists in the target sites, and that most of the cells are not detectable after 7∼14 days post transplantation. It seems that MSC can deliver a profound clinical effect without trans-differentiation, without homing to target organs in significant numbers and despite the cell's disappearance within short periods of time. These finding also suggest that the full potency of MSC has not yet been exploited in the current applications. Here we will provide an overview of the different routes used for cell delivery and the fate of the cells after transplantation. The effects on clinical outcome are discussed with respect to the role cell entrapment in non-target organs may play for the observed clinical effects.
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Affiliation(s)
- Andreas Kurtz
- Charité Universitätsmedizin Berlin, Berlin-Brandenburg Center for Regenerative Therapies, Berlin, Germany
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19
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Thrivikraman G, Madras G, Basu B. Intermittent electrical stimuli for guidance of human mesenchymal stem cell lineage commitment towards neural-like cells on electroconductive substrates. Biomaterials 2014; 35:6219-35. [PMID: 24816362 DOI: 10.1016/j.biomaterials.2014.04.018] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Accepted: 04/06/2014] [Indexed: 02/06/2023]
Abstract
In the context of the role of multiple physical factors in dictating stem cell fate, the present paper demonstrates the effectiveness of the intermittently delivered external electric field stimulation towards switching the stem cell fate to specific lineage, when cultured in the absence of biochemical growth factors. In particular, our findings present the ability of human mesenchymal stem cells (hMSCs) to respond to the electric stimuli by adopting extended neural-like morphology on conducting polymeric substrates. Polyaniline (PANI) is selected as the model system to demonstrate this effect, as the electrical conductivity of the polymeric substrates can be systematically tailored over a broad range (10(-9) to 10 S/cm) from highly insulating to conducting by doping with varying concentrations (10(-5) to 1 m) of HCl. On the basis of the culture protocol involving the systematic delivery of intermittent electric field (dc) stimulation, the parametric window of substrate conductivity and electric field strength was established to promote significant morphological extensions, with minimal cellular damage. A time dependent morphological change in hMSCs with significant filopodial elongation was observed after 7 days of electrically stimulated culture. Concomitant with morphological changes, a commensurate increase in the expression of neural lineage commitment markers such as nestin and βIII tubulin was recorded from hMSCs grown on highly conducting substrates, as revealed from the mRNA expression analysis using Reverse Transcriptase-Polymerase Chain Reaction (RT-PCR) as well as by immune-fluorescence imaging. Therefore, the present work establishes the key role of intermittent and systematic delivery of electric stimuli as guidance cues in promoting neural-like differentiation of hMSCs, when grown on electroconductive substrates.
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Affiliation(s)
- Greeshma Thrivikraman
- Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Giridhar Madras
- Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Bikramjit Basu
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India.
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Gomez-Sanchez C, Kowalczyk T, Ruiz De Eguino G, Lopez-Arraiza A, Infante A, Rodriguez CI, Kowalewski TA, Sarrionandia M, Aurrekoetxea J. Electrospinning of poly(lactic acid)/polyhedral oligomeric silsesquioxane nanocomposites and their potential in chondrogenic tissue regeneration. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:802-25. [PMID: 24754323 DOI: 10.1080/09205063.2014.910151] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The study was conducted to evaluate the cytocompatibility and hydrolytic degradability of the new poly(lactic acid)/polyethylene glycol-polyhedral oligomeric silsesquioxane (peg-POSS/PLLA) nanocomposite as potential material for cartilage regeneration. PLLA scaffolds containing 0 to 5% of peg-POSS were fabricated by electrospinning. Human mesenchymal stem cells (hMSC's) were cultured in vitro to evaluate the cytocompatibility of the new nanocomposite material. Hydrolytic degradation studies were also carried out to analyze the mass loss rate of the nanocomposites through time. The addition of the peg-POSS to the PLLA did not affect the processability of the nanocomposite by electrospinning. It was also observed that peg-POSS did not show any relevant change in fibers morphology, concluding that it was well dispersed. However, addition of peg-POSS caused noticeable decrease in mean fiber diameter, which made the specific surface area of the scaffold to rise. hMSC's were able to attach, to proliferate, and to differentiate into chondrocytes in a similar way onto the different types of electrospun peg-POSS/PLLA and pure PLLA scaffolds, showing that the peg-POSS as nano-additive does not exhibit any cytotoxicity. The hydrolytic degradation rate of the material was lower when peg-POSS was added, showing a higher durability of the nanocomposites through time. Results demonstrate that the addition of peg-POSS to the PLLA scaffolds does not affect its cytocompatibility to obtain hyaline cartilage from hMSC's.
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Affiliation(s)
- C Gomez-Sanchez
- a Mechanical and Industrial Production Department , Mondragon Unibertsitatea , Loramendi, 4, 20500 Arrasate-Mondragon , Spain
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Mathews S, Bhonde R, Gupta PK, Totey S. Novel biomimetic tripolymer scaffolds consisting of chitosan, collagen type 1, and hyaluronic acid for bone marrow-derived human mesenchymal stem cells-based bone tissue engineering. J Biomed Mater Res B Appl Biomater 2014; 102:1825-34. [PMID: 24723571 DOI: 10.1002/jbm.b.33152] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 03/04/2014] [Accepted: 03/13/2014] [Indexed: 12/17/2022]
Abstract
Human bone marrow-derived mesenchymal stem cells (hMSCs) are an ideal osteogenic cell source for bone tissue engineering (BTE). A scaffold, in the context of BTE, is the extracellular matrix (ECM) that provides the unique microenvironment and play significant role in regulating cell behavior, differentiation, and development in an in vitro culture system. In this study, we have developed novel biomimetic tripolymer scaffolds for BTE using an ECM protein, collagen type 1; an ECM glycosaminoglycan, hyaluronic acid; and a natural osteoconductive polymer, chitosan. The scaffolds were characterized by scanning electron microscopy (SEM) and swelling ratio. The scaffolds were seeded with hMSCs and tested for cytocompatibility and osteogenic potential. The scaffolds supported cell adhesion, enhanced cell proliferation, promoted cell migration, showed good cell viability, and osteogenic potential. The cells were able to migrate out from the scaffolds in favorable conditions. SEM, alkaline phosphatase assay, and immunofluorescent staining confirmed the differentiation of hMSCs to osteogenic lineage in the scaffolds. In conclusion, we have successfully developed biomimetic scaffolds that supported the proliferation and differentiation of hMSCs. These scaffolds hold great promise as a cell-delivery vehicle for regenerative therapies and as a support system for enhancing bone regeneration.
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Affiliation(s)
- Smitha Mathews
- Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad-500007, India
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Boeloni JN, Ocarino NM, Goes AM, Serakides R. Comparative study of osteogenic differentiation potential of mesenchymal stem cells derived from bone marrow and adipose tissue of osteoporotic female rats. Connect Tissue Res 2014; 55:103-14. [PMID: 24175668 DOI: 10.3109/03008207.2013.860970] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Osteoporosis causes reduction of osteogenic differentiation of mesenchymal stem cells (MSCs) from bone marrow and adipose tissue. This study was designed to compare the osteogenic potential of bone marrow mesenchymal stem cells (BMMSCs) and adipose-derived stem cells (ADSCs) of ovariectomized (OVX) rats. MSC were harvested from bone marrow and inguinal fat pads of six OVX rats. The limitations of this report are that cells from different animals were pooled for the purpose of the experiments that were carried out in this study. At 7, 14 and 21 d of osteogenic differentiation, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) conversion, alkaline phosphatase activity and gene expression for collagen I, osteocalcin, bone sialoprotein, osteopontin and bone morphogenetic protein-2 bone morphogenetic protein-2 (BMP-2) were analyzed. At 21 d, percentage of cells per field and percentage of mineralized nodule were analyzed. The data were subjected to analysis of variance, and the means were compared by Student-Newman-Keuls test. The cells, regardless of group, showed phenotypic characteristics consistent with stem cells. MTT conversion, alkaline phosphatase activity, percentage of mineralized nodule and expression of collagen I, osteocalcin and BMP-2 of ADSCs from OVX rats were higher when compared to BMMSCs from OVX rats in at least one of the evaluated periods (p<0.05). However, bone sialoprotein and osteopontin expression were smaller than those observed in BMMSCs for all evaluated periods (p<0.05). It was concluded that the ADSCs from OVX rats have higher osteogenic potential when compared to BMMSCs from OVX rats. This result suggests that the treatment of osteoporosis with autologous ADSCs may be more efficient.
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Affiliation(s)
- Jankerle Neves Boeloni
- Núcleo de Células Tronco e Terapia Celular Animal (NCT-TCA), Escola de Veterinária da Universidade Federal de Minas Gerais (UFMG) , Belo Horizonte, MG , Brasil and
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Moon HH, Joo MK, Mok H, Lee M, Hwang KC, Kim SW, Jeong JH, Choi D, Kim SH. MSC-based VEGF gene therapy in rat myocardial infarction model using facial amphipathic bile acid-conjugated polyethyleneimine. Biomaterials 2013; 35:1744-54. [PMID: 24280192 DOI: 10.1016/j.biomaterials.2013.11.019] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 11/07/2013] [Indexed: 12/28/2022]
Abstract
Mesenchymal stem cells (MSCs) have attracted much attention in regenerative medicine owing to their apparent usefulness as multi-potent replacement cells. The potential of MSC therapy can be further improved by transforming MSCs with therapeutic genes that maximize the efficacy of gene therapy and their own therapeutic ability. Since most conventional transfection methodologies have shown marginal success in delivering exogenous genes into primary cultured cells, efficient gene transfer into primary MSCs is a prerequisite for the development of MSC-based gene therapy strategies to achieve repair and regeneration of damaged tissues. Herein, facially amphipathic bile acid-modified polyethyleneimine (BA-PEI) conjugates were synthesized and used to transfer hypoxia-inducible vascular endothelial growth factor gene (pHI-VEGF) in MSCs for the treatment of rat myocardial infarction. Under the optimized transfection conditions, the BA-PEI conjugates significantly increased the VEGF protein expression levels in rat MSCs, compared with traditional transfection methods such as Lipofectamine™ and branched-PEI (25 kDa). Furthermore, the prepared pHI-VEGF-engineered MSCs (VEGF-MSCs) resulted in improved cell viability, particularly during severe hypoxic exposure in vitro. The transplantation of MSCs genetically modified to overexpress VEGF by BA-PEI enhanced the capillary formation in the infarction region and eventually attenuated left ventricular remodeling after myocardial infarction in rats. This study demonstrates the applicability of the BA-PEI conjugates for the efficient transfection of therapeutic genes into MSCs and the feasibility of using the genetically engineered MSCs in regenerative medicine for myocardial infarction.
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Affiliation(s)
- Hyung-Ho Moon
- Severance Integrative Research Institute for Cerebral and Cardiovascular Disease, Yonsei University Health System, 250 Seongsanno, Seodaemun-gu, Seoul 120-752, South Korea
| | - Min Kyung Joo
- Center for Theragnosis, Biomedical Research Center, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 6, Seongbuk-gu, Seoul 136-791, South Korea
| | - Hyejung Mok
- Department of Bioscience and Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangji-gu, Seoul 143-701, South Korea
| | - Minhyung Lee
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul 133-791, South Korea
| | - Ki-Chul Hwang
- Severance Integrative Research Institute for Cerebral and Cardiovascular Disease, Yonsei University Health System, 250 Seongsanno, Seodaemun-gu, Seoul 120-752, South Korea
| | - Sung Wan Kim
- Center for Controlled Chemical Delivery, Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Ji Hoon Jeong
- School of Pharmacy, Sungkyunkwan University, Suwon 440-746, South Korea
| | - Donghoon Choi
- Severance Integrative Research Institute for Cerebral and Cardiovascular Disease, Yonsei University Health System, 250 Seongsanno, Seodaemun-gu, Seoul 120-752, South Korea.
| | - Sun Hwa Kim
- Severance Integrative Research Institute for Cerebral and Cardiovascular Disease, Yonsei University Health System, 250 Seongsanno, Seodaemun-gu, Seoul 120-752, South Korea; Center for Theragnosis, Biomedical Research Center, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 6, Seongbuk-gu, Seoul 136-791, South Korea.
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Abstract
Mechanical factors play a crucial role in the development of articular cartilage in vivo. In this regard, tissue engineers have sought to leverage native mechanotransduction pathways to enhance in vitro stem cell-based cartilage repair strategies. However, a thorough understanding of how individual mechanical factors influence stem cell fate is needed to predictably and effectively utilize this strategy of mechanically-induced chondrogenesis. This article summarizes some of the latest findings on mechanically stimulated chondrogenesis, highlighting several new areas of interest, such as the effects of mechanical stimulation on matrix maintenance and terminal differentiation, as well as the use of multifactorial bioreactors. Additionally, the roles of individual biophysical factors, such as hydrostatic or osmotic pressure, are examined in light of their potential to induce mesenchymal stem cell chondrogenesis. An improved understanding of biomechanically-driven tissue development and maturation of stem cell-based cartilage replacements will hopefully lead to the development of cell-based therapies for cartilage degeneration and disease.
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Boeloni JN, de M. Ocarino N, Silva JF, Corrêa CR, Bertollo CM, Hell RC, de M. Pereira M, Goes AM, Serakides R. Osteogenic differentiation of bone marrow mesenchymal stem cells of ovariectomized and non-ovariectomized female rats with thyroid dysfunction. Pathol Res Pract 2013; 209:44-51. [DOI: 10.1016/j.prp.2012.10.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 09/02/2012] [Accepted: 10/02/2012] [Indexed: 10/27/2022]
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Foja S, Jung M, Harwardt B, Riemann D, Pelz-Ackermann O, Schroeder IS. Hypoxia supports reprogramming of mesenchymal stromal cells via induction of embryonic stem cell-specific microRNA-302 cluster and pluripotency-associated genes. Cell Reprogram 2012; 15:68-79. [PMID: 23256541 DOI: 10.1089/cell.2012.0037] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Pluripotency is characterized by specific transcription factors such as OCT4, NANOG, and SOX2, but also by pluripotency-associated microRNAs (miRs). Somatic cells can be reprogrammed by forced expression of these factors leading to induced pluripotent stem cells (iPSCs) with characteristics similar to embryonic stem cells (ESCs). However, current reprogramming strategies are commonly based on viral delivery of the pluripotency-associated factors, which affects the integrity of the genome and impedes the use of such cells in any clinical application. In an effort to establish nonviral, nonintegrating reprogramming strategies, we examined the influence of hypoxia on the expression of pluripotency-associated factors and the ESC-specific miR-302 cluster in primary and immortalized mesenchymal stromal cells (MSCs). The combination of hypoxia and fibroblast growth factor 2 (FGF2) treatments led to the induction of OCT4 and NANOG in an immortalized cell line L87 and primary MSCs, accompanied with increased doubling rates and decreased senescence. Most importantly, the endogenous ECS-specific cluster miR-302 was induced upon hypoxic culture and FGF2 supplementation. Hypoxia also improved reprogramming of MSCs via episomal expression of pluripotency factors. Thus, our data illustrate that hypoxia in combination with FGF2 supplementation efficiently facilitates reprogramming of MSCs.
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Affiliation(s)
- Sabine Foja
- Translational Centre for Regenerative Medicine, Leipzig University, Germany
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Colombo M, Carregal-Romero S, Casula MF, Gutiérrez L, Morales MP, Böhm IB, Heverhagen JT, Prosperi D, Parak WJ. Biological applications of magnetic nanoparticles. Chem Soc Rev 2012; 41:4306-34. [PMID: 22481569 DOI: 10.1039/c2cs15337h] [Citation(s) in RCA: 701] [Impact Index Per Article: 58.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this review an overview about biological applications of magnetic colloidal nanoparticles will be given, which comprises their synthesis, characterization, and in vitro and in vivo applications. The potential future role of magnetic nanoparticles compared to other functional nanoparticles will be discussed by highlighting the possibility of integration with other nanostructures and with existing biotechnology as well as by pointing out the specific properties of magnetic colloids. Current limitations in the fabrication process and issues related with the outcome of the particles in the body will be also pointed out in order to address the remaining challenges for an extended application of magnetic nanoparticles in medicine.
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Affiliation(s)
- Miriam Colombo
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Milan, Italy
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Neuss S, Denecke B, Gan L, Lin Q, Bovi M, Apel C, Wöltje M, Dhanasingh A, Salber J, Knüchel R, Zenke M. Transcriptome analysis of MSC and MSC-derived osteoblasts on Resomer® LT706 and PCL: impact of biomaterial substrate on osteogenic differentiation. PLoS One 2011; 6:e23195. [PMID: 21935359 PMCID: PMC3173366 DOI: 10.1371/journal.pone.0023195] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 07/08/2011] [Indexed: 11/19/2022] Open
Abstract
Background Mesenchymal stem cells (MSC) represent a particularly attractive cell type for bone tissue engineering because of their ex vivo expansion potential and multipotent differentiation capacity. MSC are readily differentiated towards mature osteoblasts with well-established protocols. However, tissue engineering frequently involves three-dimensional scaffolds which (i) allow for cell adhesion in a spatial environment and (ii) meet application-specific criteria, such as stiffness, degradability and biocompatibility. Methodology/Principal Findings In the present study, we analysed two synthetic, long-term degradable polymers for their impact on MSC-based bone tissue engineering: PLLA-co-TMC (Resomer® LT706) and poly(ε-caprolactone) (PCL). Both polymers enhance the osteogenic differentiation compared to tissue culture polystyrene (TCPS) as determined by Alizarin red stainings, scanning electron microscopy, PCR and whole genome expression analysis. Resomer® LT706 and PCL differ in their influence on gene expression, with Resomer® LT706 being more potent in supporting osteogenic differentiation of MSC. The major trigger on the osteogenic fate, however, is from osteogenic induction medium. Conclusion This study demonstrates an enhanced osteogenic differentiation of MSC on Resomer® LT706 and PCL compared to TCPS. MSC cultured on Resomer® LT706 showed higher numbers of genes involved in skeletal development and bone formation. This identifies Resomer® LT706 as particularly attractive scaffold material for bone tissue engineering.
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Affiliation(s)
- Sabine Neuss
- Institute of Pathology, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany.
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Wei YJ, Tsai KS, Lin LC, Lee YT, Chi CW, Chang MC, Tsai TH, Hung SC. Catechin stimulates osteogenesis by enhancing PP2A activity in human mesenchymal stem cells. Osteoporos Int 2011; 22:1469-79. [PMID: 20683709 DOI: 10.1007/s00198-010-1352-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Accepted: 06/14/2010] [Indexed: 01/03/2023]
Abstract
SUMMARY Using human mesenchymal stem cells, we identified catechin from a panel of herbal ingredients and Chinese traditional compounds with the strongest osteogenic effects. Catechin increased alkaline phosphatase activity, calcium deposition, and mRNA expression of Runx2 and osteocalcin. We further clarified the signaling pathway that catechin mediated to stimulate osteogenesis. INTRODUCTION Human mesenchymal stem cells (hMSCs), useful as a species specific cell culture system for studying cell lineage differentiation, were examined as a tool to identify novel herbal ingredients and Chinese traditional compounds for enhancing osteogenesis. METHODS Immortalized and primary hMSCs were induced in osteogenic induction medium in the presence of a variety of herbal ingredients and Chinese traditional compounds and osteogenic differentiation was evaluated by histochemical assays and quantitative RT-PCR. RESULTS Using immortalized hMSCs, we first identified catechin, 18β-glycyrrhetinic acid, baishao, and danggui with osteogenic properties, which enhanced calcium deposition at the dose without significant cytotoxic effects. Primary hMSCs were then applied for confirming the osteogenic effects of catechin, which increased alkaline phosphatase activity, calcium deposition, and mRNA expression of Runx2 and osteocalcin. We further found the extracellular signal-regulated kinase (ERK) pathway was downregulated upon stimulation with catechin. Catechin increased the level and activity of protein phosphatases 2A (PP2A) that dephosphorylates ERK kinase (MEK) and ERK. Further, PP2A inhibitor, okadaic acid, abolished the effect of catechin-mediated inactivation of ERK and stimulation of osteogenesis. The blocking effect of okadaic acid on osteogenesis was further reversed by PD98059, a specific inhibitor of MEK. Co-immunoprecipitation revealed the association of PP2A to both MEK and ERK. CONCLUSIONS These studies propose catechin enhanced osteogenesis by increasing the PP2A level that inhibits the MEK and ERK signaling in hMSCs. These results prove the concept of using hMSCs as a convenient tool for rapid and consistent screening of the osteogenic herbal ingredients and traditional Chinese compounds.
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Affiliation(s)
- Y J Wei
- Laboratory of Pharmacokinetics, Institute of Traditional Medicine, National Yang-Ming University, 155, Sec 2, Li-Nong Street, Taipei 112, Taiwan
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Fan D, Akkaraju GR, Couch EF, Canham LT, Coffer JL. The role of nanostructured mesoporous silicon in discriminating in vitro calcification for electrospun composite tissue engineering scaffolds. NANOSCALE 2011; 3:354-361. [PMID: 21107480 DOI: 10.1039/c0nr00550a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The impact of mesoporous silicon (PSi) particles-embedded either on the surface, or totally encapsulated within electrospun poly (ε-caprolactone) (PCL) fibers-on its properties as a tissue engineering scaffold is assessed. Our findings suggest that the resorbable porous silicon component can sensitively accelerate the necessary calcification process in such composites. Calcium phosphate deposition on the scaffolds was measured via in vitro calcification assays both at acellular and cellular levels. Extensive attachment of fibroblasts, human adult mesenchymal stem cells, and mouse stromal cells to the scaffold were observed. Complementary cell differentiation assays and ultrastructural measurements were also carried out; the levels of alkaline phosphatase expression, a specific biomarker for mesenchymal stem cell differentiation, show that the scaffolds have the ability to mediate such processes, and that the location of the Si plays a key role in levels of expression.
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Affiliation(s)
- Dongmei Fan
- Department of Chemistry, Texas Christian University, Fort Worth, TX 76129, USA
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Kim SH, Moon HH, Kim HA, Hwang KC, Lee M, Choi D. Hypoxia-inducible vascular endothelial growth factor-engineered mesenchymal stem cells prevent myocardial ischemic injury. Mol Ther 2011; 19:741-50. [PMID: 21245851 DOI: 10.1038/mt.2010.301] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
In the absence of repair mechanisms involving angiogenesis and cardiomyogenesis, loss of cardiomyocytes after myocardial injury is a primary causative factor in the progression toward heart failure. In an effort to reduce ischemic myocardial damage, we investigated the effects on infarcted myocardium of transplantation of genetically modified mesenchymal stem cells (MSCs) that specifically expressed vascular endothelial growth factor (VEGF) under hypoxic conditions. A hypoxia-inducible VEGF expression vector was introduced into MSCs (HI-VEGF-MSCs) using a nonviral delivery method, which were then used for the treatment of ischemic myocardial injury in rats. In HI-VEGF-MSCs, VEGF expression was significantly increased by hypoxia in vitro as compared to normoxia. Likewise, in vivo administration of HI-VEGF-MSCs induced ischemia-responsive VEGF production, leading to a significant increase in myocardial neovascularization after myocardial infarction. When compared with unmodified-MSCs, HI-VEGF-MSCs were retained in infarcted myocardium in greater numbers and remarkably reduced the number of apoptotic cells the infarcted area. Transplantation of HI-VEGF-MSCs resulted in a substantial attenuation of left ventricular remodeling in rat myocardial infarction. This study demonstrates that cell-based gene therapy using genetically engineered MSCs to express VEGF in response to hypoxic stress can be a promising therapeutic strategy for the treatment of ischemic heart disease.
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Affiliation(s)
- Sun Hwa Kim
- Severance Integrative Research Institute for Cerebral & Cardiovascular Disease, Yonsei University Health System, Seoul, South Korea
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Qi J, Chen A, You H, Li K, Zhang D, Guo F. Proliferation and chondrogenic differentiation of CD105-positive enriched rat synovium-derived mesenchymal stem cells in three-dimensional porous scaffolds. Biomed Mater 2011; 6:015006. [PMID: 21205995 DOI: 10.1088/1748-6041/6/1/015006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Stem cell-based tissue engineering has provided an alternative strategy to treat cartilage lesions, and synovium-derived mesenchymal stem cells (SMSCs) are considered as a promising cell source for cartilage repair. In this study, the SMSCs were isolated from rat synovium, and CD105-positive (CD105(+)) cells were enriched using magnetic activated cell sorting. Sorted cells were subsequently seeded onto the chitosan-alginate composite three-dimensional (3D) porous scaffolds and cultured in chondrogenic culture medium in the presence of TGF-β₃ and BMP-2 for 2 weeks in vitro. After 2 weeks in culture, scanning electron microscopy results showed that cells attached and proliferated well on scaffolds, and secreted extracellular matrix were also observed. From day 7 to day 14, the total DNA and glucosaminoglycan content of the cells cultured in scaffolds were found to have increased significantly, and cell cycle analyses revealed that the percentage of cells in the S and G2/M phases increased and the percentage of cells in the G0/G1 phase decreased. Compared with non-sorted cells, the sorted cells cultured in scaffolds underwent more chondrogenic differentiation, as evidenced by higher expression of type II collagen and Sox9 at the protein and mRNA levels. The results suggest that CD105(+) enriched SMSCs may be a potential cell source for cartilage tissue engineering, and the chitosan-alginate composite 3D porous scaffold could provide a favorable microenvironment for supporting proliferation and chondrogenic differentiation of cells.
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Affiliation(s)
- Jun Qi
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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Preparation and Characterization of Genetically Engineered Mesenchymal Stem Cell Aggregates for Regenerative Medicine. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2010. [DOI: 10.4333/kps.2010.40.6.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
The dimension of alveolar ridge is decreased by bone atrophy and pneumatization of the maxillary sinus after loss of teeth in the posterior maxilla, and sinus augmentation procedures are performed to create bone quantity and quality to ensure the placement of dental implants.Various osteoconductive materials have been used to augment the sinus floor, but these materials are cell-free and require more time for bone healing. Attempts have been made to apply a cell-based approach that uses mesenchymal stem cells combined with an osteoconductive scaffold. Adult stem cells that can be derived from various tissues including bone marrow, periosteum, and trabecular bone have been applied in sinus augmentation procedures both experimentally and clinically with successful results.In this review, the cell-based approaches in sinus augmentation procedures with various carriers will be described and the efficacy and clinical applicability will be addressed.
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Sun LY, Hsieh DK, Lin PC, Chiu HT, Chiou TW. Pulsed electromagnetic fields accelerate proliferation and osteogenic gene expression in human bone marrow mesenchymal stem cells during osteogenic differentiation. Bioelectromagnetics 2010; 31:209-19. [PMID: 19866474 DOI: 10.1002/bem.20550] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Osteogenesis is a complex series of events involving the differentiation of mesenchymal stem cells to generate new bone. In this study, we examined the effect of pulsed electromagnetic fields (PEMFs) on cell proliferation, alkaline phosphatase (ALP) activity, mineralization of the extracellular matrix, and gene expression in bone marrow mesenchymal stem cells (BMMSCs) during osteogenic differentiation. Exposure of BMMSCs to PEMFs increased cell proliferation by 29.6% compared to untreated cells at day 1 of differentiation. Semi-quantitative RT-PCR indicated that PEMFs significantly altered temporal expression of osteogenesis-related genes, including a 2.7-fold increase in expression of the key osteogenesis regulatory gene cbfa1, compared to untreated controls. In addition, exposure to PEMFs significantly increased ALP expression during the early stages of osteogenesis and substantially enhanced mineralization near the midpoint of osteogenesis. These results suggest that PEMFs enhance early cell proliferation in BMMSC-mediated osteogenesis, and accelerate the osteogenesis.
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Affiliation(s)
- Li-Yi Sun
- Department of Biological Science and Technology, National Chiao Tung University, No. 75 Po-Ai Street, Hsinchu, Taiwan, ROC
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Dos Santos F, Andrade PZ, Boura JS, Abecasis MM, da Silva CL, Cabral JMS. Ex vivo expansion of human mesenchymal stem cells: a more effective cell proliferation kinetics and metabolism under hypoxia. J Cell Physiol 2010; 223:27-35. [PMID: 20020504 DOI: 10.1002/jcp.21987] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The low bone marrow (BM) MSC titers demand a fast ex vivo expansion process to meet the clinically relevant cell dosage. Attending to the low oxygen tension of BM in vivo, we studied the influence of hypoxia on human BM MSC proliferation kinetics and metabolism. Human BM MSC cultured under 2% (hypoxia) and 20% O(2) (normoxia) were characterized in terms of proliferation, cell division kinetics and metabolic patterns. BM MSC cultures under hypoxia displayed an early start of the exponential growth phase, and cell numbers obtained at each time point throughout culture were consistently higher under low O(2), resulting in a higher fold increase after 12 days under hypoxia (40 +/- 10 vs. 30 +/- 6). Cell labeling with PKH26 allowed us to determine that after 2 days of culture, a significant higher cell number was already actively dividing under 2% compared to 20% O(2) and BM MSC expanded under low oxygen tension displayed consistently higher percentages of cells in the latest generations (generations 4-6) until the 5th day of culture. Cells under low O(2) presented higher specific consumption of nutrients, especially early in culture, but with lower specific production of inhibitory metabolites. Moreover, 2% O(2) favored CFU-F expansion, while maintaining BM MSC characteristic immunophenotype and differentiative potential. Our results demonstrated a more efficient BM MSC expansion at 2% O(2), compared to normoxic conditions, associated to an earlier start of cellular division and supported by an increase in cellular metabolism efficiency towards the maximization of cell yield for application in clinical settings.
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Affiliation(s)
- Francisco Dos Santos
- Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Lisboa, Portugal
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Yang C, Frei H, Rossi FM, Burt HM. The differentialin vitroandin vivoresponses of bone marrow stromal cells on novel porous gelatinâalginate scaffolds. J Tissue Eng Regen Med 2009; 3:601-14. [DOI: 10.1002/term.201] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Rodríguez-Gil Y, González MAM, Carcavilla CB, Santamaría JS. Lines of Cell Differentiation in Solitary Fibrous Tumor: An Ultrastructural and Immunohistochemical Study of 10 Cases. Ultrastruct Pathol 2009; 33:274-85. [DOI: 10.3109/01913120903352177] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Heng BC, Cowan CM, Davalian D, Stankus J, Duong-Hong D, Ehrenreich K, Basu S. Electrostatic binding of nanoparticles to mesenchymal stem cells via high molecular weight polyelectrolyte chains. J Tissue Eng Regen Med 2009; 3:243-54. [PMID: 19283725 DOI: 10.1002/term.160] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Combining stem cell transplantation with nanoparticle-mediated delivery of drugs and pharmaceuticals is envisioned to be one of the next major developmental steps in regenerative medicine. However, a major challenge would be to keep nanoparticles co-localized with stem cells upon transplantation or transfusion in situ. Since nanoparticles are physically much smaller in size than cells and would not specifically bind to extracellular matrix, it is easier for them to disperse from the transplantation site via the blood circulation. Conjugating nanoparticles directly to the cell membrane can potentially interfere with cellular function by physically obstructing cell surface receptors from interacting with the extracellular matrix, various growth factors and cytokines and other cells. Moreover, drug-loaded nanoparticles may be internalized into the cytoplasm via endocytosis or phagocytosis, which may wreak damage on the cellular machinery, leading to impaired physiological function or cell death. A novel solution may be to utilize high molecular weight polyelectrolyte chains to electrostatically bind nanoparticles to cells. For this purpose, hyaluronan, poly-L-lysine and chitosan are of special interest, because these molecules are generally recognized to be biocompatible for application in various pharmaceutical and surgical products. This study investigated the use of these molecules to bind nanoparticles to mesenchymal stem cells (MSCs), and a novel technique of conjugating half the cell surface with nanoparticles through the use of polyelectrolyte chains was also developed. This would avoid blocking MSC interaction with cytokines, growth factors, extracellular matrix and other cells within the recipient tissue/organ upon delivery in situ.
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Affiliation(s)
- Boon C Heng
- Abbott Vascular Inc., Santa Clara, CA 95054, USA
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40
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Dado D, Levenberg S. Cell–scaffold mechanical interplay within engineered tissue. Semin Cell Dev Biol 2009; 20:656-64. [DOI: 10.1016/j.semcdb.2009.02.001] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2008] [Revised: 01/26/2009] [Accepted: 02/02/2009] [Indexed: 12/22/2022]
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Heng BC, Cowan CM, Basu S. Comparison of enzymatic and non-enzymatic means of dissociating adherent monolayers of mesenchymal stem cells. Biol Proced Online 2009; 11:161-9. [PMID: 19495917 PMCID: PMC3055293 DOI: 10.1007/s12575-009-9001-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Accepted: 01/30/2009] [Indexed: 12/24/2022] Open
Abstract
The dissociation of adherent mesenchymal stem cell (MSC) monolayers with trypsin and enzyme-free dissociation buffer was compared. A significantly lower proportion of viable cells were obtained with enzyme-free dissociation buffers compared to trypsin. Subsequently, the dissociated cells were re-seeded on new cell culture dishes and were subjected to the MTT assay 24 h later. The proportion of viable cells that reattached was significantly lower for cells obtained by dissociation with enzyme-free dissociation buffer compared to trypsin. Frozen–thawed MSC displayed a similar trend, yielding consistently higher cell viability and reattachment rates when dissociated with trypsin compared to enzyme-free dissociation buffer. It was also demonstrated that exposure of trypsin-dissociated MSC to enzyme-free dissociation buffer for 1 h had no significant detrimental effect on cell viability.
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Chang EI, Bonillas RG, El-ftesi S, Chang EI, Ceradini DJ, Vial IN, Chan DA, Michaels J, Gurtner GC. Tissue engineering using autologous microcirculatory beds as vascularized bioscaffolds. FASEB J 2008; 23:906-15. [PMID: 19001054 DOI: 10.1096/fj.08-114868] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Classic tissue engineering paradigms are limited by the incorporation of a functional vasculature and a reliable means for reimplantation into the host circulation. We have developed a novel approach to overcome these obstacles using autologous explanted microcirculatory beds (EMBs) as bioscaffolds for engineering complex three-dimensional constructs. In this study, EMBs consisting of an afferent artery, capillary beds, efferent vein, and surrounding parenchymal tissue are explanted and maintained for 24 h ex vivo in a bioreactor that preserves EMB viability and function. Given the rapidly advancing field of stem cell biology, EMBs were subsequently seeded with three distinct stem cell populations, multipotent adult progenitor cells (MAPCs), and bone marrow and adipose tissue-derived mesenchymal stem cells (MSCs). We demonstrate MAPCs, as well as MSCs, are able to egress from the microcirculation into the parenchymal space, forming proliferative clusters. Likewise, human adipose tissue-derived MSCs were also found to egress from the vasculature and seed into the EMBs, suggesting feasibility of this technology for clinical applications. We further demonstrate that MSCs can be transfected to express a luciferase protein and continue to remain viable and maintain luciferase expression in vivo. By using the vascular network of EMBs, EMBs can be perfused ex vivo and seeded with stem cells, which can potentially be directed to differentiate into neo-organs or transfected to replace failing organs and deficient proteins.
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Affiliation(s)
- Edward I Chang
- Department of Surgery, Stanford University Medical Center, Stanford, CA 94305, USA
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Iemata M, Takarada T, Hinoi E, Taniura H, Yoneda Y. Suppression by glutamate of proliferative activity through glutathione depletion mediated by the cystine/glutamate antiporter in mesenchymal C3H10T1/2 stem cells. J Cell Physiol 2007; 213:721-9. [PMID: 17520696 DOI: 10.1002/jcp.21145] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Although previous studies including ours have demonstrated the functional expression of different glutamate (Glu) signaling machineries such as Glu receptors (GluRs) and transporters in osteoblasts and chondrocytes, little attention has been paid to the role of Glu in their ancestral mesenchymal stem cells to date. In the present study, we have evaluated the possible functionality of Glu in cultured mouse mesenchymal stem cell line C3H10T1/2 cells endowed to proliferate for the self-renewal and to differentiate toward osteoblast, chondrocyte, adipocyte, and myocyte lineages. Expression of mRNA was for the first time shown with the cystine/Glu antiporter composed of xCT and 4F2hc subunits, in addition to particular excitatory amino acid transporter (EAAT) isoforms and ionotropic GluRs, in undifferentiated C3H10T1/2 cells. Glu significantly suppressed the proliferation activity at a concentration over 500 microM without inducing cell death or differentiation, while the suppression occurred in a manner sensitive to the prevention by cystine and reduced glutathione (GSH), but not by EAAT inhibitors. A significant decrease was seen in intracellular GSH levels in C3H10T1/2 cells cultured with Glu, whereas the cellular proliferation activity was drastically decreased by the addition of the GSH depleter cyclohexene-1-one and the GSH biosynthesis inhibitor L-buthionine-[S,R]-sulfoximine, respectively. Transient overexpression of both xCT and 4F2hc subunits led to an increased basal proliferative activity in C3H10T1/2 cells. These results suggest that Glu could suppress the cellular proliferation toward self-renewal through a mechanism associated with the depletion of intracellular GSH after promoting the retrograde operation of the cystine/Glu antiporter in C3H10T1/2 cells.
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Affiliation(s)
- Mika Iemata
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School of Natural Science and Technology, Kanazawa, Ishikawa, Japan
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