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Adolpho LF, Ribeiro LMS, Freitas GP, Lopes HB, Gomes MPO, Ferraz EP, Gimenes R, Beloti MM, Rosa AL. Mesenchymal Stem Cells Combined with a P(VDF-TrFE)/BaTiO 3 Scaffold and Photobiomodulation Therapy Enhance Bone Repair in Rat Calvarial Defects. J Funct Biomater 2023; 14:306. [PMID: 37367270 DOI: 10.3390/jfb14060306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023] Open
Abstract
BACKGROUND Tissue engineering and cell therapy have been the focus of investigations on how to treat challenging bone defects. This study aimed to produce and characterize a P(VDF-TrFE)/BaTiO3 scaffold and evaluate the effect of mesenchymal stem cells (MSCs) combined with this scaffold and photobiomodulation (PBM) on bone repair. METHODS AND RESULTS P(VDF-TrFE)/BaTiO3 was synthesized using an electrospinning technique and presented physical and chemical properties suitable for bone tissue engineering. This scaffold was implanted in rat calvarial defects (unilateral, 5 mm in diameter) and, 2 weeks post-implantation, MSCs were locally injected into these defects (n = 12/group). Photobiomodulation was then applied immediately, and again 48 and 96 h post-injection. The μCT and histological analyses showed an increment in bone formation, which exhibited a positive correlation with the treatments combined with the scaffold, with MSCs and PBM inducing more bone repair, followed by the scaffold combined with PBM, the scaffold combined with MSCs, and finally the scaffold alone (ANOVA, p ≤ 0.05). CONCLUSIONS The P(VDF-TrFE)/BaTiO3 scaffold acted synergistically with MSCs and PBM to induce bone repair in rat calvarial defects. These findings emphasize the need to combine a range of techniques to regenerate large bone defects and provide avenues for further investigations on innovative tissue engineering approaches.
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Affiliation(s)
- Leticia Faustino Adolpho
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, SP, Brazil
| | | | - Gileade Pereira Freitas
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, SP, Brazil
- School of Dentistry, Federal University of Goiás, Goiânia 74605-020, GO, Brazil
| | - Helena Bacha Lopes
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, SP, Brazil
| | - Maria Paula Oliveira Gomes
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, SP, Brazil
| | - Emanuela Prado Ferraz
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, SP, Brazil
| | - Rossano Gimenes
- Institute of Physics and Chemistry, University of Itajubá, Itajubá 37500-903, MG, Brazil
| | - Marcio Mateus Beloti
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, SP, Brazil
| | - Adalberto Luiz Rosa
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, SP, Brazil
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Zhang HJ, Li FS, Wang F, Wang H, He TC, Reid RR, He BC, Xia Q. Transgenic PDGF-BB sericin hydrogel potentiates bone regeneration of BMP9-stimulated mesenchymal stem cells through a crosstalk of the Smad-STAT pathways. Regen Biomater 2022; 10:rbac095. [PMID: 36683747 PMCID: PMC9847547 DOI: 10.1093/rb/rbac095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/08/2022] [Accepted: 11/24/2022] [Indexed: 12/05/2022] Open
Abstract
Silk as a natural biomaterial is considered as a promising bone substitute in tissue regeneration. Sericin and fibroin are the main components of silk and display unique features for their programmable mechanical properties, biocompatibility, biodegradability and morphological plasticity. It has been reported that sericin recombinant growth factors (GFs) can support cell proliferation and induce stem cell differentiation through cross-talk of signaling pathways during tissue regeneration. The transgenic technology allows the productions of bioactive heterologous GFs as fusion proteins with sericin, which are then fabricated into solid matrix or hydrogel format. Herein, using an injectable hydrogel derived from transgenic platelet-derived GF (PDGF)-BB silk sericin, we demonstrated that the PDGF-BB sericin hydrogel effectively augmented osteogenesis induced by bone morphogenetic protein (BMP9)-stimulated mesenchymal stem cells (MSCs) in vivo and in vitro, while inhibiting adipogenic differentiation. Further gene expression and protein-protein interactions studies demonstrated that BMP9 and PDGF-BB synergistically induced osteogenic differentiation through the cross-talk between Smad and Stat3 pathways in MSCs. Thus, our results provide a novel strategy to encapsulate osteogenic factors and osteoblastic progenitors in transgenic sericin-based hydrogel for robust bone tissue engineering.
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Affiliation(s)
- Hui-Jie Zhang
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
| | - Fu-Shu Li
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Department of Pharmacy, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing 400014, China
| | - Feng Wang
- Biological Science Research Center, Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Han Wang
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
- Department of Pharmacy, Panzhou People’s Hospital, Guizhou 553599, China
| | - Tong-Chuan He
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Russell R Reid
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
- Laboratory of Craniofacial Biology and Development, Department of Surgery Section of Plastic Surgery, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Bai-Cheng He
- Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing 400016, China
- Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Qingyou Xia
- Biological Science Research Center, Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
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Comparison between Intra-Articular Injection of Infrapatellar Fat Pad (IPFP) Cell Concentrates and IPFP-Mesenchymal Stem Cells (MSCs) for Cartilage Defect Repair of the Knee Joint in Rabbits. Stem Cells Int 2021; 2021:9966966. [PMID: 34367294 PMCID: PMC8337123 DOI: 10.1155/2021/9966966] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/30/2021] [Accepted: 07/13/2021] [Indexed: 12/13/2022] Open
Abstract
Mesenchymal stem cells (MSCs) have emerged as a promising therapeutic method in regenerative medicine. Our previous research adopted a simple nonenzymatic strategy for the preparation of a new type of ready-to-use infrapatellar fat pad (IPFP) cell concentrates. The aim of this study was to compare the therapeutic efficacy of intra-articular (IA) injection of autologous IPFP cell concentrates and allogeneic IPFP-MSCs obtained from these concentrates in a rabbit articular cartilage defect model. IPFP-MSCs sprouting from the IPFP cell concentrates were characterized via flow cytometry as well as based on their potential for differentiation into adipocytes, osteoblasts, and chondrocytes. In the rabbit model, cartilage defects were created on the trochlear groove, followed by treatment with IPFP cell concentrates, IPFP-MSCs, or normal saline IA injection. Distal femur samples were evaluated at 6 and 12 weeks posttreatment via macroscopic observation and histological assessment based on the International Cartilage Repair Society (ICRS) macroscopic scoring system as well as the ICRS visual histological assessment scale. The macroscopic score and histological score were significantly higher in the IPFP-MSC group compared to the IPFP cell concentrate group at 12 weeks. Further, both treatment groups had higher scores compared to the normal saline group. In comparison to the latter, the groups treated with IPFP-MSCs and IPFP cell concentrates showed considerably better cartilage regeneration. Overall, IPFP-MSCs represent an effective therapeutic strategy for stimulating articular cartilage regeneration. Further, due to the simple, cost-effective, nonenzymatic, and safe preparation process, IPFP cell concentrates may represent an effective alternative to stem cell-based therapy in the clinic.
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Zhou Y, Li H, Xiang D, Shao J, Fu Q, Han Y, Zhu J, Chen Y, Qian Q. The clinical efficacy of arthroscopic therapy with knee infrapatellar fat pad cell concentrates in treating knee cartilage lesion: a prospective, randomized, and controlled study. J Orthop Surg Res 2021; 16:87. [PMID: 33509248 PMCID: PMC7841893 DOI: 10.1186/s13018-021-02224-9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 01/11/2021] [Indexed: 12/14/2022] Open
Abstract
Introduction To evaluate the clinical efficacy of arthroscopic therapy with infrapatellar fat pad cell concentrates in treating knee cartilage lesions, we conducted a prospective randomized single-blind clinical study of controlled method. Methods Sixty cases from Shanghai Changzheng Hospital from April 2018 to December 2019 were chosen and randomly divided into 2 groups equally. Patients in the experiment group were treated through knee arthroscopy with knee infrapatellar fat pad cell concentrates containing mesenchymal stromal cells, while patients in the control group were treated through regular knee arthroscopic therapy. VAS and WOMAC scores were assessed at pre-operation, and 6 weeks, 12 weeks, 6 months, and 12 months after intervention. MORCART scores were assessed at pre-operation and 12 months after intervention. Results Twenty-nine cases in the experiment group and 28 cases in the control group were followed up. No significant difference in VAS, WOMAC, and MOCART scores were found between the two groups before surgery (P > 0.05). The WOMAC total and WOMAC function scores of the experiment group were significantly lower than those of the control group 6 months and 12 months after surgery (P < 0.05). The VAS rest and VAS motion scores of the experiment group were found significantly lower than those of the control group 12 months after surgery (P < 0.05). The MOCART scores of the experiment group were found significantly higher compared with the control group 12 months after surgery (P < 0.05). No significant difference in WOMAC stiffness scores were found between the two groups. Conclusions The short-term results of our study are encouraging and demonstrate that knee arthroscopy with infrapatellar fat pad cell concentrates containing mesenchymal stromal cells is safe and provides assistance in reducing pain and improving function in patients with knee cartilage lesions. Trial registration ChiCTR1800015379. Registered on 27 March 2018, http://www.chictr.org.cn/showproj.aspx?proj=25901.
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Affiliation(s)
- Yiqin Zhou
- Department of Joint Surgery and Sports Medicine, Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China
| | - Haobo Li
- Department of Joint Surgery and Sports Medicine, Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China
| | - Dong Xiang
- Department of Joint Surgery and Sports Medicine, Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China
| | - Jiahua Shao
- Department of Joint Surgery and Sports Medicine, Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China
| | - Qiwei Fu
- Department of Joint Surgery and Sports Medicine, Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China
| | - Yaguang Han
- Department of Joint Surgery and Sports Medicine, Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China
| | - Jun Zhu
- Department of Joint Surgery and Sports Medicine, Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China.
| | - Yi Chen
- Department of Joint Surgery and Sports Medicine, Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China.
| | - Qirong Qian
- Department of Joint Surgery and Sports Medicine, Shanghai Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China.
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Rothweiler R, Basoli V, Duttenhoefer F, Kubosch D, Schmelzeisen R, Johnstone B, Alini M, Stoddart MJ. Predicting and Promoting Human Bone Marrow MSC Chondrogenesis by Way of TGFβ Receptor Profiles: Toward Personalized Medicine. Front Bioeng Biotechnol 2020; 8:618. [PMID: 32676497 PMCID: PMC7333220 DOI: 10.3389/fbioe.2020.00618] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 05/20/2020] [Indexed: 11/13/2022] Open
Abstract
The use of human mesenchymal stromal cells (hMSCs) for cartilage regeneration has been hampered by the inherent donor variation of primary monolayer expanded cells. Although CD markers are typically used to characterize cell populations, there is no correlation between CD marker profile and functional outcomes. Therefore, we aimed to discover novel predictive MSC chondrogenesis markers. The chondrogenic potential of primary human bone marrow MSCs (hBMSCs) over multiple passages was assessed by standard pellet culture. We confirmed that the ratio of TGFβ-RI/TGFβ-RII at the time of cell recovery from the tissue culture plastic reliably predicted chondrogenic potential. Furthermore, it is possible to prospectively characterize any human BMSC cell population as responders or non-responders with respect to chondrogenic differentiation potential. Transient increase of the ratio with siRNA knockdown of TGFβ-RII reproducibly recovered the chondrogenic differentiation ability of non-responsive MSCs. Together this offers an opportunity to produce a more functionally characterized cell population for use in autologous cartilage repair therapies.
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Affiliation(s)
- René Rothweiler
- Regenerative Orthopaedics, AO Research Institute Davos, Davos, Switzerland.,Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Medical Center - University of Freiburg, University of Freiburg, Freiburg im Breisgau, Germany
| | - Valentina Basoli
- Regenerative Orthopaedics, AO Research Institute Davos, Davos, Switzerland
| | - Fabian Duttenhoefer
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Medical Center - University of Freiburg, University of Freiburg, Freiburg im Breisgau, Germany
| | - David Kubosch
- Department of Orthopedics and Trauma Surgery, Faculty of Medicine, Medical Center - University of Freiburg, University of Freiburg, Freiburg im Breisgau, Germany
| | - Rainer Schmelzeisen
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Medical Center - University of Freiburg, University of Freiburg, Freiburg im Breisgau, Germany
| | - Brian Johnstone
- Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, OR, United States
| | - Mauro Alini
- Regenerative Orthopaedics, AO Research Institute Davos, Davos, Switzerland
| | - Martin James Stoddart
- Regenerative Orthopaedics, AO Research Institute Davos, Davos, Switzerland.,Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Medical Center - University of Freiburg, University of Freiburg, Freiburg im Breisgau, Germany
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van Geffen EW, van Caam APM, Vitters EL, van Beuningen HM, van de Loo FA, van Lent PLEM, Koenders MI, van der Kraan PM. Interleukin-37 Protects Stem Cell-Based Cartilage Formation in an Inflammatory Osteoarthritis-Like Microenvironment. Tissue Eng Part A 2019; 25:1155-1166. [DOI: 10.1089/ten.tea.2018.0267] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | - Elly Louise Vitters
- Department of Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Henk Maria van Beuningen
- Department of Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Fons Adrianus van de Loo
- Department of Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Marije Ingrid Koenders
- Department of Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Peter Mario van der Kraan
- Department of Experimental Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
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Intra-articular targeting of nanomaterials for the treatment of osteoarthritis. Acta Biomater 2019; 93:239-257. [PMID: 30862551 DOI: 10.1016/j.actbio.2019.03.010] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 02/28/2019] [Accepted: 03/06/2019] [Indexed: 12/31/2022]
Abstract
Osteoarthritis is a prevalent and debilitating disease that involves pathological contributions from numerous joint tissues and cells. The joint is a challenging arena for drug delivery, since the joint has poor bioavailability for systemically administered drugs and experiences rapid clearance of therapeutics after intra-articular injection. Moreover, each tissue within the joint presents unique barriers to drug localization. In this review, the various applications of nanotechnology to overcome these drug delivery limitations are investigated. Nanomaterials have reliably shown improvements to retention profiles of drugs within the joint space relative to injected free drugs. Additionally, nanomaterials have been modified through active and passive targeting strategies to facilitate interactions with and localization within specific joint tissues such as cartilage and synovium. Last, the limitations of drawing cross-study comparisons, the implications of synovial fluid, and the potential importance of multi-modal therapeutic strategies are discussed. As emerging, cell-specific disease modifying osteoarthritis drugs continue to be developed, the need for targeted nanomaterial delivery will likely become critical for effective clinical translation of therapeutics for osteoarthritis. STATEMENT OF SIGNIFICANCE: Improving drug delivery to the joint is a pressing clinical need. Over 27 million Americans live with osteoarthritis, and this figure is continuously expanding. Numerous drugs have been investigated but have failed in clinical trials, likely related to poor bioavailability to target cells. This article comprehensively reviews the advances in nano-scale delivery vehicles designed to overcome the delivery barriers in the joint. This is the first review to analyze active and passive targeting strategies systematically for different target sites while also delineating between tissue homing and whole joint retention. By bringing together the lessons learned across numerous nano-scale platforms, researchers may be able to hone future nanomaterial designs, allowing emerging therapeutics to perform with clinically relevant efficacy and disease modifying potential.
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Hung C, Nakamoto C, Muschler GF. Factors Affecting Connective Tissue Progenitors and Orthopaedic Implications. Scand J Surg 2016; 95:81-9. [PMID: 16821650 DOI: 10.1177/145749690609500202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- C Hung
- Department of Biomedical Engineering, The Cleveland Clinic Foundation, Cleveland, OH 44195, USA
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Zhang L, Zheng L, Fan HS, Zhang XD. A scaffold-filter model for studying the chondrogenic differentiation of stem cells in vitro. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 70:962-968. [PMID: 27772727 DOI: 10.1016/j.msec.2016.04.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 03/23/2016] [Accepted: 04/04/2016] [Indexed: 12/17/2022]
Abstract
This study was undertaken to explore the synergistic effect of scaffold materials and a cartilage-like environment on the chondrogenic differentiation of stem cells. Because stem cells encapsulated in a cartilage scaffold will be induced by scaffold molecules as well as permeable molecules from the surroundings, it is impossible to optimize a chondro-inducible scaffold without considering environmental sensitivity. How do we know if a designed scaffold will be sufficient prior to implantation? In this study, bone marrow mesenchymal stem cells (bMSCs) were seeded in various scaffolds, including collagen hydrogel, collage/sodium alginate hydrogel, collagen sponge and silk fibroin sponge. The cell-scaffold complex was encapsulated in a filter pocket to avoid direct contact with co-cultured chondrocytes. Scaffolds differed in the ability to adsorb inducible molecules expressed by chondrocytes, as evidenced by various expressions of cartilage specific proteins and genes. Collagen hydrogel unexpectedly supported chondrogenic differentiation in an environment filled with chondrocytes secretion better than other reinforced scaffolds, which is consistent with the previous experiment in vivo. This result indicated that the environmental sensitivity of a scaffold is important for in vivo chondro-induction. This in vitro scaffold-filter model may be useful as a precursor to investigate the chondro-inducing potential of various scaffolds for cartilage repair.
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Affiliation(s)
- Ling Zhang
- College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China; National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, China.
| | - Li Zheng
- The Medical and Scientific Research Center of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China; National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, China
| | - Hong S Fan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, China
| | - Xing D Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, China
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Tabatabaei FS, Torshabi M. Effects of Non-Collagenous Proteins, TGF-β1, and PDGF-BB on Viability and Proliferation of Dental Pulp Stem Cells. EJOURNAL OF ORAL MAXILLOFACIAL RESEARCH 2016; 7:e4. [PMID: 27099698 PMCID: PMC4837608 DOI: 10.5037/jomr.2016.7104] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 03/22/2016] [Indexed: 12/17/2022]
Abstract
Objectives The dentin matrix servers as a reservoir of growth factors, sequestered during dentinogenesis. The aim of this study was to assess the viability and proliferation of dental pulp stem cells in the presence of dentin matrix-derived non-collagenous proteins and two growth factors; platelet-derived growth factor BB and transforming growth factor beta 1. Material and Methods The dental pulp cells were isolated and cultured. The dentin proteins were extracted and purified. The MTT assay was performed for assessment of cell viability and proliferation in the presence of different concentrations of dentin proteins and growth factors during 24 - 72 h post-treatment. Results The cells treated with 250 ng/mL dentin proteins had the best viability and proliferation ability in comparison with other concentrations (P < 0.05). The MTT assay demonstrated that cells cultured with 5 ng/mL platelet-derived growth factor BB had the highest viability at each time point as compared to other groups (P < 0.05). However, in presence of platelet-derived growth factor BB alone and in combination with transforming growth factor beta 1 and dentin proteins (10 ng/mL), significant higher viability was seen at all time points (P < 0.05). The least viability and proliferation at each growth factor concentration was seen in cells treated with combination of transforming growth factor beta 1 and dentin proteins at 72 h (P < 0.05). Conclusions The results indicated that the triple combination of growth factors and matrix-derived non-collagenous proteins (especially at 10 ng/mL concentration) has mitogenic effect on dental pulp stem cells.
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Affiliation(s)
- Fahimeh Sadat Tabatabaei
- Department of Dental Biomaterials, School of Dentistry, Shahid Beheshti University of Medical sciencesIran.; Department of Tissue Engineering, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical SciencesIran
| | - Maryam Torshabi
- Department of Dental Biomaterials, School of Dentistry, Shahid Beheshti University of Medical sciencesIran.; Department of Tissue Engineering, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical SciencesIran
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Activin Receptor-Like Kinase Receptors ALK5 and ALK1 Are Both Required for TGFβ-Induced Chondrogenic Differentiation of Human Bone Marrow-Derived Mesenchymal Stem Cells. PLoS One 2015; 10:e0146124. [PMID: 26720610 PMCID: PMC4697836 DOI: 10.1371/journal.pone.0146124] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 12/14/2015] [Indexed: 01/01/2023] Open
Abstract
Introduction Bone marrow-derived mesenchymal stem cells (BMSCs) are promising for cartilage regeneration because BMSCs can differentiate into cartilage tissue-producing chondrocytes. Transforming Growth Factor β (TGFβ) is crucial for inducing chondrogenic differentiation of BMSCs and is known to signal via Activin receptor-Like Kinase (ALK) receptors ALK5 and ALK1. Since the specific role of these two TGFβ receptors in chondrogenesis is unknown, we investigated whether ALK5 and ALK1 are expressed in BMSCs and whether both receptors are required for chondrogenic differentiation of BMSCs. Materials & Methods ALK5 and ALK1 gene expression in human BMSCs was determined with RT-qPCR. To induce chondrogenesis, human BMSCs were pellet-cultured in serum-free chondrogenic medium containing TGFβ1. Chondrogenesis was evaluated by aggrecan and collagen type IIα1 RT-qPCR analysis, and histological stainings of proteoglycans and collagen type II. To overexpress constitutively active (ca) receptors, BMSCs were transduced either with caALK5 or caALK1. Expression of ALK5 and ALK1 was downregulated by transducing BMSCs with shRNA against ALK5 or ALK1. Results ALK5 and ALK1 were expressed in in vitro-expanded as well as in pellet-cultured BMSCs from five donors, but mRNA levels of both TGFβ receptors did not clearly associate with chondrogenic induction. TGFβ increased ALK5 and decreased ALK1 gene expression in chondrogenically differentiating BMSC pellets. Neither caALK5 nor caALK1 overexpression induced cartilage matrix formation as efficient as that induced by TGFβ. Moreover, short hairpin-mediated downregulation of either ALK5 or ALK1 resulted in a strong inhibition of TGFβ-induced chondrogenesis. Conclusion ALK5 as well as ALK1 are required for TGFβ-induced chondrogenic differentiation of BMSCs, and TGFβ not only directly induces chondrogenesis, but also modulates ALK5 and ALK1 receptor signaling in BMSCs. These results imply that optimizing cartilage formation by mesenchymal stem cells will depend on activation of both receptors.
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Denry I, Kuhn LT. Design and characterization of calcium phosphate ceramic scaffolds for bone tissue engineering. Dent Mater 2015; 32:43-53. [PMID: 26423007 DOI: 10.1016/j.dental.2015.09.008] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 09/04/2015] [Accepted: 09/09/2015] [Indexed: 01/03/2023]
Abstract
OBJECTIVES Our goal is to review design strategies for the fabrication of calcium phosphate ceramic scaffolds (CPS), in light of their transient role in bone tissue engineering and associated requirements for effective bone regeneration. METHODS We examine the various design options available to meet mechanical and biological requirements of CPS and later focus on the importance of proper characterization of CPS in terms of architecture, mechanical properties and time-sensitive properties such as biodegradability. Finally, relationships between in vitro versus in vivo testing are addressed, with an attempt to highlight reliable performance predictors. RESULTS A combinatory design strategy should be used with CPS, taking into consideration 3D architecture, adequate surface chemistry and topography, all of which are needed to promote bone formation. CPS represent the media of choice for delivery of osteogenic factors and anti-infectives. Non-osteoblast mediated mineral deposition can confound in vitro osteogenesis testing of CPS and therefore the expression of a variety of proteins or genes including collagen type I, bone sialoprotein and osteocalcin should be confirmed in addition to increased mineral content. CONCLUSIONS CPS are a superior scaffold material for bone regeneration because they actively promote osteogenesis. Biodegradability of CPS via calcium and phosphate release represents a unique asset. Structural control of CPS at the macro, micro and nanoscale and their combination with cells and polymeric materials is likely to lead to significant developments in bone tissue engineering.
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Affiliation(s)
- Isabelle Denry
- Department of Prosthodontics, University of Iowa College of Dentistry, 801 Newton Road, Iowa City, IA 52242-1010, USA.
| | - Liisa T Kuhn
- Department of Reconstructive Sciences, UConn Health, 263 Farmington Avenue, MC 1615, Farmington, CT 06030-1615, USA
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Kim JE, Kim SH, Jung Y. In situ chondrogenic differentiation of bone marrow stromal cells in bioactive self-assembled peptide gels. J Biosci Bioeng 2015; 120:91-8. [DOI: 10.1016/j.jbiosc.2014.11.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 11/17/2014] [Accepted: 11/18/2014] [Indexed: 12/15/2022]
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Khattab HM, Aoyama E, Kubota S, Takigawa M. Physical interaction of CCN2 with diverse growth factors involved in chondrocyte differentiation during endochondral ossification. J Cell Commun Signal 2015; 9:247-54. [PMID: 25895141 DOI: 10.1007/s12079-015-0290-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 04/07/2015] [Indexed: 02/06/2023] Open
Abstract
CCN family member 2 (CCN2) has been shown to promote the proliferation and differentiation of chondrocytes, osteoblasts, osteoclasts, and vascular endothelial cells. In addition, a number of growth factors and cytokines are known to work in harmony to promote the process of chondrogenesis and chondrocyte differentiation toward endochondral ossification. Earlier we showed that CCN2 physically interacts with some of them, suggesting that multiple effects of CCN2 on various differentiation stages of chondrocytes may be attributed to its interaction with these growth factors and cytokines. However, little is known about the functional interaction occurring between CCN2 and other growth factors and cytokines in promoting chondrocyte proliferation and differentiation. In this study we sought to shed light on the binding affinities between CCN2 and other essential growth factors and cytokines known to be regulators of chondrocyte differentiation. Using the surface plasmon resonance assay, we analyzed the dissociation constant between CCN2 and each of the following: TGF-β1, TGF-β3, IGF-I, IGF-II, PDGF-BB, GDF5, PTHrP, and VEGF. We found a strong association between CCN2 and VEGF, as well as a relatively high association with TGF-β1, TGF-β3, PDGF-BB, and GDF-5. However, the sensorgrams obtained for possible interaction between CCN2 and IGF-I, IGF-II or PTHrP showed no response. This study underlines the correlation between CCN2 and certain other growth factors and cytokines and suggests the possible participation of such interaction in the process of chondrogenesis and chondrocyte differentiation toward endochondral ossification.
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Affiliation(s)
- Hany Mohamed Khattab
- Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Dental School, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Eriko Aoyama
- Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Dental School, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Satoshi Kubota
- Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Dental School, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan.,Department of Biochemistry and Molecular Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan
| | - Masaharu Takigawa
- Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Dental School, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8525, Japan.
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15
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Green DE, Rubin CT. Consequences of irradiation on bone and marrow phenotypes, and its relation to disruption of hematopoietic precursors. Bone 2014; 63:87-94. [PMID: 24607941 PMCID: PMC4005928 DOI: 10.1016/j.bone.2014.02.018] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 01/07/2014] [Accepted: 02/26/2014] [Indexed: 02/06/2023]
Abstract
The rising levels of radiation exposure, specifically for medical treatments and accidental exposures, have added great concern for the long term risks of bone fractures. Both the bone marrow and bone architecture are devastated following radiation exposure. Even sub-lethal doses cause a deficit to the bone marrow microenvironment, including a decline in hematopoietic cells, and this deficit occurs in a dose dependent fashion. Certain cell phenotypes though are more susceptible to radiation damage, with mesenchymal stem cells being more resilient than the hematopoietic stem cells. The decline in total bone marrow hematopoietic cells is accompanied with elevated adipocytes into the marrow cavity, thereby inhibiting hematopoiesis and recovery of the bone marrow microenvironment. Poor bone marrow is also associated with a decline in bone architectural quality. Therefore, the ability to maintain the bone marrow microenvironment would hinder much of the trabecular bone loss caused by radiation exposure, ultimately decreasing some comorbidities in patients exposed to radiation.
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Affiliation(s)
- Danielle E Green
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY 11794-5281, USA.
| | - Clinton T Rubin
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY 11794-5281, USA
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16
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Kang SN, Lee JS, Park JH, Cho JH, Park JH, Cho KK, Lee OH, Kim IS. In vitro anti-osteoporosis properties of diverse Korean Drynariae rhizoma phenolic extracts. Nutrients 2014; 6:1737-51. [PMID: 24763116 PMCID: PMC4011064 DOI: 10.3390/nu6041737] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 04/09/2014] [Accepted: 04/21/2014] [Indexed: 01/11/2023] Open
Abstract
Drynariae rhizoma has been used to prevent bone loss that occurs with increasing age. However, the chemical compounds in extracts that act on bone metabolism in herbal medicine are poorly understood. This study aimed to investigate and compare the extraction efficacy of polyphenolic compounds, antioxidant activity, and in vitro anti-osteoporosis properties of water extract (DR-DW) and ethanol extract (DR-EtOH) from D. rhizoma. Total phenolics and flavonoids were better extracted with 70% EtOH, and this extraction method also resulted in higher antioxidant activity and in vitro anti-osteoporosis properties in these extracts. In particular, the contents of phloroglucinol, protocatechuic acid ethyl ester, 2-amino-3,4-dimethyl-benzoic acid, 3-(3,5-dimethyl-pyrazol-1-yl)-benzoic acid, chlorogenic acid, syringic acid, trans-ferulic acid, (−)-epigallocatechin, epigallocatechin gallate, quercetin dehydrate, luteolin and emodin in DR-EtOH were higher than those in DR-DW. These results indicated that DR-EtOH could be a good source of natural herbs with anti-osteoporosis properties.
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Affiliation(s)
- Suk-Nam Kang
- Department of Animal Resources, Daegu University, Gyeongsan 712-714, Korea.
| | - Jong Seok Lee
- Department of Food Science and Biotechnology, Kangwon National University, Chuncheon 200-701, Korea.
| | - Joung-Hyun Park
- Department of Food Science and Technology, Institute of Food Science, Pukyong National University, Busan 608-737, Korea.
| | - Jae-Hyeon Cho
- Institute of Life Science, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, Korea.
| | - Jae-Hong Park
- Department of Animal Resource and Science, Dankook University, Choongnam 330-714, Korea.
| | - Kwang-Keun Cho
- Department of Animal Resource Technology, Gyeongnam National University of Science and Technology, Jinju 660-758, Korea.
| | - Ok-Hwan Lee
- Department of Food Science and Biotechnology, Kangwon National University, Chuncheon 200-701, Korea.
| | - Il-Suk Kim
- Department of Animal Resource Technology, Gyeongnam National University of Science and Technology, Jinju 660-758, Korea.
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17
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Rodríguez-Évora M, García-Pizarro E, del Rosario C, Pérez-López J, Reyes R, Delgado A, Rodríguez-Rey JC, Évora C. Smurf1 Knocked-Down, Mesenchymal Stem Cells and BMP-2 in an Electrospun System for Bone Regeneration. Biomacromolecules 2014; 15:1311-22. [DOI: 10.1021/bm401854d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Javier Pérez-López
- Department
of Molecular Biology, University of Cantabria, IFIMAV, Santander, Spain
| | | | | | - José C Rodríguez-Rey
- Department
of Molecular Biology, University of Cantabria, IFIMAV, Santander, Spain
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18
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Ghosh D, Lili L, McGrail DJ, Matyunina LV, McDonald JF, Dawson MR. Integral role of platelet-derived growth factor in mediating transforming growth factor-β1-dependent mesenchymal stem cell stiffening. Stem Cells Dev 2014; 23:245-61. [PMID: 24093435 PMCID: PMC3904528 DOI: 10.1089/scd.2013.0240] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 10/04/2013] [Indexed: 12/20/2022] Open
Abstract
Mesenchymal stem cells (MSCs) play an important role in matrix remodeling, fibroblast activation, angiogenesis, and immunomodulation and are an integral part of fibrovascular networks that form in developing tissues and tumors. The engraftment and function of MSCs in tissue niches is regulated by a multitude of soluble proteins. Transforming growth factor-β1 (TGF-β1) and platelet-derived growth factor-BB (PDGF) have previously been recognized for their role in MSC biology; thus, we sought to investigate their function in mediating MSC mechanics and matrix interactions. Cytoskeletal organization, characterized by cell elongation, stress fiber formation, and condensation of actin and microtubules, was dramatically affected by TGF-β1, individually and in combination with PDGF. The intracellular mechanical response to these stimuli was measured with particle tracking microrheology. MSCs stiffened in response to TGF-β1 (their elastic moduli was ninefold higher than control cells), a result that was enhanced by the addition of PDGF (100-fold change). Blocking TGF-β1 or PDGF signaling with inhibitors SB-505124 or JNJ-10198409, respectively, reversed soluble-factor-induced stiffening, indicating that crosstalk between these two pathways is essential for stiffening response. A genome-wide microarray analysis revealed TGF-β1-dependent regulation of cytoskeletal actin-binding protein genes. Actin crosslinking and bundling protein genes, which regulate cytosolic rheology through changes in semiflexible actin polymer meshwork, were upregulated with TGF-β1 treatment. TGF-β1 alone and in combination with PDGF also amplified surface integrin expression and adhesivity of MSCs with extracellular matrix proteins. These findings will provide a more mechanistic insight for modeling tissue-level rigidity in fibrotic tissues and tumors.
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Affiliation(s)
- Deepraj Ghosh
- Georgia Institute of Technology, School of Chemical and Biomolecular Engineering, Atlanta, Georgia
| | - Loukia Lili
- Georgia Institute of Technology, School of Biology, Atlanta, Georgia
- Georgia Institute of Technology, Integrated Cancer Research Center, Atlanta, Georgia
| | - Daniel J. McGrail
- Georgia Institute of Technology, School of Chemical and Biomolecular Engineering, Atlanta, Georgia
| | - Lilya V. Matyunina
- Georgia Institute of Technology, School of Biology, Atlanta, Georgia
- Georgia Institute of Technology, Integrated Cancer Research Center, Atlanta, Georgia
| | - John F. McDonald
- Georgia Institute of Technology, School of Biology, Atlanta, Georgia
- Georgia Institute of Technology, Integrated Cancer Research Center, Atlanta, Georgia
- The Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Michelle R. Dawson
- Georgia Institute of Technology, School of Chemical and Biomolecular Engineering, Atlanta, Georgia
- The Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
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19
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Pak J, Lee JH, Lee SH. Regenerative repair of damaged meniscus with autologous adipose tissue-derived stem cells. BIOMED RESEARCH INTERNATIONAL 2014; 2014:436029. [PMID: 24592390 PMCID: PMC3925627 DOI: 10.1155/2014/436029] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 12/04/2013] [Accepted: 12/23/2013] [Indexed: 01/08/2023]
Abstract
Mesenchymal stem cells (MSCs) are defined as pluripotent cells found in numerous human tissues, including bone marrow and adipose tissue. Such MSCs, isolated from bone marrow and adipose tissue, have been shown to differentiate into bone and cartilage, along with other types of tissues. Therefore, MSCs represent a promising new therapy in regenerative medicine. The initial treatment of meniscus tear of the knee is managed conservatively with nonsteroidal anti-inflammatory drugs and physical therapy. When such conservative treatment fails, an arthroscopic resection of the meniscus is necessary. However, the major drawback of the meniscectomy is an early onset of osteoarthritis. Therefore, an effective and noninvasive treatment for patients with continuous knee pain due to damaged meniscus has been sought. Here, we present a review, highlighting the possible regenerative mechanisms of damaged meniscus with MSCs (especially adipose tissue-derived stem cells (ASCs)), along with a case of successful repair of torn meniscus with significant reduction of knee pain by percutaneous injection of autologous ASCs into an adult human knee.
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Affiliation(s)
- Jaewoo Pak
- Stems Medical Clinic, 32-3 Chungdam-dong, Gangnam-gu, Seoul 135-950, Republic of Korea
| | - Jung Hun Lee
- Stems Medical Clinic, 32-3 Chungdam-dong, Gangnam-gu, Seoul 135-950, Republic of Korea
- National Leading Research Laboratory, Department of Biological Sciences, Myongji University, 116 Myongjiro, Gyeonggido, Yongin 449-728, Republic of Korea
| | - Sang Hee Lee
- National Leading Research Laboratory, Department of Biological Sciences, Myongji University, 116 Myongjiro, Gyeonggido, Yongin 449-728, Republic of Korea
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20
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Hatakeyama I, Marukawa E, Takahashi Y, Omura K. Effects of platelet-poor plasma, platelet-rich plasma, and platelet-rich fibrin on healing of extraction sockets with buccal dehiscence in dogs. Tissue Eng Part A 2013; 20:874-82. [PMID: 24098948 DOI: 10.1089/ten.tea.2013.0058] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Alveolar bone resorption generally occurs during healing after tooth extraction. This study aimed to evaluate the effects of platelet-poor plasma (PPP), platelet-rich plasma (PRP), and platelet-rich fibrin (PRF) on healing in a ridge-augmentation model of the canine socket with dehiscence of the buccal wall. The third mandibular premolars of 12 beagle dogs were extracted and a 3 mm buccal dehiscence from the alveolar crest to the buccal wall of the extraction socket was created. These sockets were then divided into four groups on the basis of the material used to fill the sockets: PPP, PRP, PRF, and control (no graft material) groups. Results were evaluated at 4 and 8 weeks after surgery. The ultrastructural morphology and constructs of each blood product were studied by a scanning electron microscope (SEM) or calculating concentrations of platelets, fibrinogen, platelet-derived growth factor, and transforming growth factor-β. A total of five microcomputed tomography images of specimens were selected for measurement, and the area occupied by the newly formed bone as well as the horizontal bone width were measured. Moreover, decalcified tissue specimens from each defect were analyzed histologically. The median area of new bone at 4 and 8 weeks and median horizontal bone width at 8 weeks were the highest in the PPP group. However, bone maturation in the PRF and the PRP groups was more progressed than that in the PPP and control groups. By SEM findings, the PRF group showed a more highly condensed fibrin fiber network that was regularly arranged when compared with the PPP and PRP groups. The growth factors released from platelets in PRP indicated higher concentrations than that in PRF. Under more severe conditions for bone formation, as in this experiment, the growth factors released from platelets had a negative effect on bone formation. This study showed that PPP is an effective material for the preservation of sockets with buccal dehiscence.
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Affiliation(s)
- Ichiro Hatakeyama
- Oral and Maxillofacial Surgery, Division of Oral Health Sciences, Department of Oral Restitution, Tokyo Medical and Dental University Graduate School , Tokyo, Japan
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21
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Madry H, Rey-Rico A, Venkatesan JK, Johnstone B, Cucchiarini M. Transforming growth factor Beta-releasing scaffolds for cartilage tissue engineering. TISSUE ENGINEERING PART B-REVIEWS 2013; 20:106-25. [PMID: 23815376 DOI: 10.1089/ten.teb.2013.0271] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The maintenance of a critical threshold concentration of transforming growth factor beta (TGF-β) for a given period of time is crucial for the onset and maintenance of chondrogenesis. Thus, the development of scaffolds that provide temporal and/or spatial control of TGF-β bioavailability has appeal as a mechanism to induce the chondrogenesis of stem cells in vitro and in vivo for articular cartilage repair. In the past decade, many types of scaffolds have been designed to advance this goal: hydrogels based on polysaccharides, hyaluronic acid, and alginate; protein-based hydrogels such as fibrin, gelatin, and collagens; biopolymeric gels and synthetic polymers; and solid and hybrid composite (hydrogel/solid) scaffolds. In this study, we review the progress in developing strategies to deliver TGF-β from scaffolds with the aim of enhancing chondrogenesis. In the future, such scaffolds could prove critical for tissue engineering cartilage, both in vitro and in vivo.
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Affiliation(s)
- Henning Madry
- 1 Center of Experimental Orthopaedics, Saarland University , Homburg, Germany
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22
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Li H, Usas A, Poddar M, Chen CW, Thompson S, Ahani B, Cummins J, Lavasani M, Huard J. Platelet-rich plasma promotes the proliferation of human muscle derived progenitor cells and maintains their stemness. PLoS One 2013; 8:e64923. [PMID: 23762264 PMCID: PMC3676442 DOI: 10.1371/journal.pone.0064923] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 04/20/2013] [Indexed: 01/01/2023] Open
Abstract
Human muscle-derived progenitor cells (hMDPCs) offer great promise for muscle cell-based regenerative medicine; however, prolonged ex-vivo expansion using animal sera is necessary to acquire sufficient cells for transplantation. Due to the risks associated with the use of animal sera, the development of a strategy for the ex vivo expansion of hMDPCs is required. The purpose of this study was to investigate the efficacy of using platelet-rich plasma (PRP) for the ex-vivo expansion of hMDPCs. Pre-plated MDPCs, myoendothelial cells, and pericytes are three populations of hMDPCs that we isolated by the modified pre-plate technique and Fluorescence Activated Cell Sorting (FACS), respectively. Pooled allogeneic human PRP was obtained from a local blood bank, and the effect that thrombin-activated PRP-releasate supplemented media had on the ex-vivo expansion of the hMDPCs was tested against FBS supplemented media, both in vitro and in vivo. PRP significantly enhanced short and long-term cell proliferation, with or without FBS supplementation. Antibody-neutralization of PDGF significantly blocked the mitogenic/proliferative effects that PRP had on the hMDPCs. A more stable and sustained expression of markers associated with stemness, and a decreased expression of lineage specific markers was observed in the PRP-expanded cells when compared with the FBS-expanded cells. The in vitro osteogenic, chondrogenic, and myogenic differentiation capacities of the hMDPCs were not altered when expanded in media supplemented with PRP. All populations of hMDPCs that were expanded in PRP supplemented media retained their ability to regenerate myofibers in vivo. Our data demonstrated that PRP promoted the proliferation and maintained the multi-differentiation capacities of the hMDPCs during ex-vivo expansion by maintaining the cells in an undifferentiated state. Moreover, PDGF appears to be a key contributing factor to the beneficial effect that PRP has on the proliferation of hMDPCs.
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Affiliation(s)
- Hongshuai Li
- Department of Orthopedic Surgery, Stem Cell Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Arvydas Usas
- Department of Orthopedic Surgery, Stem Cell Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Minakshi Poddar
- Department of Orthopedic Surgery, Stem Cell Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Chien-Wen Chen
- Department of Orthopedic Surgery, Stem Cell Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Seth Thompson
- Department of Orthopedic Surgery, Stem Cell Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Bahar Ahani
- Department of Orthopedic Surgery, Stem Cell Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - James Cummins
- Department of Orthopedic Surgery, Stem Cell Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Mitra Lavasani
- Department of Orthopedic Surgery, Stem Cell Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Johnny Huard
- Department of Orthopedic Surgery, Stem Cell Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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23
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Moroni L, Fornasari PM. Human mesenchymal stem cells: a bank perspective on the isolation, characterization and potential of alternative sources for the regeneration of musculoskeletal tissues. J Cell Physiol 2013; 228:680-7. [PMID: 22949310 DOI: 10.1002/jcp.24223] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 08/27/2012] [Indexed: 01/14/2023]
Abstract
The continuous discovery of human mesenchymal stem cells (hMSCs) in different tissues is stirring up a tremendous interest as a cell source for regenerative medicine therapies. Historically, hMSCs have been always considered a sub-population of mononuclear cells present in the bone marrow (BM). Although BM-hMSCs are still nowadays considered as the most promising mesenchymal stem cell population to reach the clinics due to their capacity to differentiate into multiple tissues, hMSCs derived from other adult and fetal tissues have also demonstrated to possess similar differentiation capacities. Furthermore, different reports have highlighted a higher recurrence of hMSCs in some of these tissues as compared to BM. This offer a fascinating panorama for cell banking, since the creation of a stem cell factory could be envisioned where hMSCs are stocked and used for ad hoc clinical applications. In this review, we summarize the main findings and state of the art in hMSCs isolation, characterization, and differentiation from alternative tissue sources and we attempt to compare their potency for musculoskeletal regeneration.
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Affiliation(s)
- Lorenzo Moroni
- Muscoloskeletal Tissue Bank, Rizzoli Orthopaedic Institute, Bologna, Italy.
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24
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Platelet lysate coating on scaffolds directly and indirectly enhances cell migration, improving bone and blood vessel formation. Acta Biomater 2013; 9:6630-40. [PMID: 23403167 DOI: 10.1016/j.actbio.2013.02.003] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 12/28/2012] [Accepted: 02/01/2013] [Indexed: 12/16/2022]
Abstract
Suitable colonization and vascularization of tissue-engineered constructs after transplantation represent critical steps for the success of bone repair. Human platelet lysate (hPL) is composed of numerous growth factors known for their proliferative, differentiative and chemo-attractant effects on various cells involved in wound healing and bone growth. The aim of this study was to determine whether the delivery of human mesenchymal stromal cells (hMSC) seeded on hPL-coated hydroxyapatite/β-tricalcium phosphate (HA/β-TCP) scaffolds could enhance vascularization and bone formation, as well as to investigate the mechanisms by which hMSC participate in tissue regeneration. Our study demonstrates that hPL can be coated on HA/β-TCP scaffolds, which play direct and indirect effects on implanted and/or resident stem cells. Effectively, we show that hPL coating directly increases chemo-attraction to and adhesion of hMSC and endothelial cells on the scaffold. Moreover, we show that hPL coating induces hMSC to produce and secrete pro-angiogenic proteins (placental growth factor and vascular endothelial growth factor) which allow the proliferation and specific chemo-attraction of endothelial cells in vitro, thus improving in vivo neovascularization and new bone formation. This study highlights the potential of functionalizing biomaterials with hPL and shows that this growth factor combination can have synergistic effects leading to enhanced bone and blood vessel formation.
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25
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Hoşgör F, Yilmaz N, Senyurt O, Gümüşova S, Cam B, Ceylan G, Yardimci C, Pinarli FA. Effect of osteoblast cell culture on the bone implant contact. Acta Odontol Scand 2013; 71:626-31. [PMID: 22891929 DOI: 10.3109/00016357.2012.700066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
PURPOSE The aim of this study is to acquire an ideal bone implant contact under the cover of osteogenic effect of osteoblasts derived from Mesenchymal Stem Cells (MSCs). MATERIALS AND METHODS Thirty dental implants were used for this study. Implants were placed in sheep mandibles and defects were created 4 mm coronally in the dental implants. These defects were filled with Platelet Rich Plasma (PRP) in one group and with PRP + Osteoblast Cell Culture (OCC) in another group. No procedure was conducted on the control group defects (empty defect group). Eight weeks later, osseointegration was investigated with Bone Implant Contact (BIC) measurements histomorphologically. Data were checked statistically. RESULTS The variation of BIC rates between Empty Defect Group and PRP groups was significant (p <0.05). The BIC rate of the PRP group was higher than that of the Empty Defect Group. The variation of BIC rates between Empty Defect Group and PRP + OCC groups was significant (p <0.05). The BIC rate of the PRP + OCC group was higher than that of the Empty Defect Group. The variation of BIC rates between PRP and PRP + MSC groups was significant (p<0.05). The BIC rate of the PRP + OCC group was higher than that of the PRP group. At the end of the 8-week healing period, it was observed that the percentage of BIC was highest in the PRP + OCC group. CONCLUSIONS Implant-bone connection was better in the OCC-PRP group compared with the PRP group and the empty defect group. The use of OCC-PRP combination was effective on healing. The BIC value was increased significantly by OCC.
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Affiliation(s)
- F Hoşgör
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey
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26
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Koh YG, Choi YJ. Infrapatellar fat pad-derived mesenchymal stem cell therapy for knee osteoarthritis. Knee 2012; 19:902-7. [PMID: 22583627 DOI: 10.1016/j.knee.2012.04.001] [Citation(s) in RCA: 277] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2011] [Revised: 04/03/2012] [Accepted: 04/09/2012] [Indexed: 02/02/2023]
Abstract
PURPOSE The aim of the study was to determine if isolated mesenchymal stem cells (MSCs) derived from the infrapatellar fat pad could effectively improve clinical results when percutaneously injected into arthritic knees. LEVEL OF EVIDENCE Therapeutic case-control study; Level III. METHODS Twenty five stem cell injections combined with arthroscopic debridement were administered to patients with knee OA. A mean of 1.89 × 10(6) stem cells were prepared with approximately 3.0 mL of platelet-rich plasma (PRP) and injected in the selected knees of patients in the study group. RESULTS The mean Lysholm, Tegner activity scale, and VAS scores of patients in the study group improved significantly by the last follow-up visit. No major adverse events related to the injections were observed during the treatment and follow-up periods. The results were compared between the study and control groups, in which the patients had undergone arthroscopic debridement and PRP injection without stem cells. Although the preoperative mean Lysholm, Tegner activity scale, and VAS scores of the study group were significantly poorer than those of the control group, the clinical results at the last follow-up visit were similar and not significantly different between the two groups. CONCLUSIONS The short-term results of our study are encouraging and demonstrate that infrapatellar fat pad-derived MSC therapy with intraarticular injections is safe, and provides assistance in reducing pain and improving function in patients with knee OA.
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Affiliation(s)
- Yong-Gon Koh
- Department of Orthopedic Surgery, Yonsei Sarang Hospital, Seoul, South Korea
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27
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Deng T, Lv J, Pang J, Liu B, Ke J. Construction of tissue-engineered osteochondral composites and repair of large joint defects in rabbit. J Tissue Eng Regen Med 2012; 8:546-56. [PMID: 22777833 DOI: 10.1002/term.1556] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 04/20/2012] [Accepted: 05/25/2012] [Indexed: 12/19/2022]
Affiliation(s)
- Tianzheng Deng
- Department of Stomatology; Air Force General Hospital PLA; Beijing; People's Republic of China
| | - Jing Lv
- Department of Stomatology; Air Force General Hospital PLA; Beijing; People's Republic of China
| | - Jianliang Pang
- Department of Stomatology; Air Force General Hospital PLA; Beijing; People's Republic of China
| | - Bing Liu
- Department of Stomatology; Air Force General Hospital PLA; Beijing; People's Republic of China
| | - Jie Ke
- Department of Stomatology; Air Force General Hospital PLA; Beijing; People's Republic of China
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Lee JM, Kim BS, Lee H, Im GI. In vivo tracking of mesechymal stem cells using fluorescent nanoparticles in an osteochondral repair model. Mol Ther 2012; 20:1434-42. [PMID: 22491215 DOI: 10.1038/mt.2012.60] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We devised and tested an in vivo system to monitor the migration of mesenchymal stem cells (MSCs) within the marrow cavity. In vitro studies confirmed that platelet-derived growth factor (PDGF)-AA had the most potent chemotactic effect of the tested factors, and possessed the greatest number of receptors in MSCs. MSCs were labeled with fluorescent nanoparticles and injected into the marrow cavity of nude rats through osteochondral defects created in the distal femur. The defects were sealed with HCF (heparin-conjugated fibrin) or PDGF-AA-loaded HCF. In the HCF-only group, the nanoparticle-labeled MSCs dispersed outside the marrow cavity within 3 days after injection. In the PDGF-AA-loaded HCF group, the labeled cells moved time-dependently for 14 days toward the osteochondral defect. HCF-PDGF in low dose (LD; 8.5 ng/µl) was more effective than HCF-PDGF in high dose (HD; 17 ng/µl) in recruiting the MSCs to the osteochondral defect. After 21 days, the defects treated with PDGF and transforming growth factor (TGF)-β1-loaded HCF showed excellent cartilage repair compared with other groups. Further studies confirmed that this in vivo osteochondral MSCs tracking system (IOMTS) worked for other chemoattractants (chemokine (C-C motif) ligand 2 (CCL2) and PDGF-BB). IOMTS can provide a useful tool to examine the effect of growth factors or chemokines on endogenous cartilage repair.
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Affiliation(s)
- Jong Min Lee
- Department of Orthopaedics, Dongguk University Ilsan Hospital, Goyang, Korea
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Mesenchymal stem cells display tumor-specific tropism in an RCAS/Ntv-a glioma model. Neoplasia 2011; 13:716-25. [PMID: 21847363 DOI: 10.1593/neo.101680] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2010] [Revised: 05/22/2011] [Accepted: 05/25/2011] [Indexed: 12/13/2022] Open
Abstract
Bone marrow-derived mesenchymal stem cells (MSCs) have been shown to localize to gliomas and deliver therapeutic agents. However, the clinical translation of MSCs remains poorly defined because previous studies relied on glioma models with uncertain relevance to human disease, typically xenograft models in immunocompromised mice. To address this shortcoming, we used the RCAS/Ntv-a system, in which endogenous gliomas that recapitulate the tumor and stromal features of human gliomas develop in immunocompetent mice. MSCs were harvested from bone marrow of Ntv-a mice and injected into the carotid artery of Ntv-a mice previously inoculated with RCAS-PDGF-B and RCAS-IGFBP2 to induce malignant gliomas (n = 9). MSCs were labeled with luciferase for in vivo bioluminescence imaging (BLI). After intra-arterial injection, BLI revealed MSCs in the right frontal lobe in seven of nine mice. At necropsy, gliomas were detected within the right frontal lobe in all these mice, correlating with the location of the MSCs. In the two mice without MSCs based on BLI, no tumor was found, indicating that MSC localization was tumor specific. In another cohort of mice (n = 9), MSCs were labeled with SP-DiI, a fluorescent vital dye. After intra-arterial injection, fluorescence microscopy revealed SP-DiI-labeled MSCs throughout tumors 1 to 7 days after injection but not in nontumoral areas of the brain. MSCs injected intravenously did not localize to tumors (n = 12). We conclude that syngeneic MSCs are capable of homing to endogenous gliomas in immunocompetent mice. These findings support the use of MSCs as tumor-specific delivery vehicles for treating gliomas.
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GOH JCH, SHAO XX, HUTMACHER DW, LEE EH. TISSUE ENGINEERING APPROACH TO OSTEOCHONDRAL REPAIR AND REGENERATION. J MECH MED BIOL 2011. [DOI: 10.1142/s021951940400117x] [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]
Abstract
Repair of osteochondral lesions remains difficult in current clinical medicine. This is due to the lack of self-reparatory capacity in adult cartilage to respond to injuries. Furthermore, current surgical based treatment is unable to achieve long-term satisfactory results. Cell therapies combined with scaffolds has become a promising tissue engineering approach for osteochondral regeneration. This article briefly outlines the approaches and limitations in osteochondral tissue engineering from three key aspects, namely: (1) Cells and Cell Source; (2) Biomaterials and Scaffold design and fabrication; and (3) Mechanical and Biochemical Stimulus. Current optimal candidate cells for tissue engineering include bone marrow and adipose tissue derived mesenchymal stem cells. As for scaffolds, the structural design and biomaterials used should support cell growth and the organization of new functional tissue formation. Using Fused Deposition Modeling (FDM) technique, the authors developed a novel polycaprolactone osteochondral scaffold which was shown to have the ability to recruit mesenchymal stem cells and the potential for repairing defects in vivo. The article also discussed mechanical and biological stimulus for enhancing in vitro growth of tissue-engineered constructs. The final challenge is the integration of the tissue-engineered tissues into a living system as a functional device.
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Affiliation(s)
- J. C. H. GOH
- Department of Orthopaedic Surgery, National University of Singapore, Singapore
- Division of Bioengineering, National University of Singapore, Singapore
- NUS Tissue Engineering Program, Singapore
| | - X. X. SHAO
- Department of Orthopaedic Surgery, National University of Singapore, Singapore
| | - D. W. HUTMACHER
- Department of Orthopaedic Surgery, National University of Singapore, Singapore
- Division of Bioengineering, National University of Singapore, Singapore
- NUS Tissue Engineering Program, Singapore
| | - E. H. LEE
- Department of Orthopaedic Surgery, National University of Singapore, Singapore
- NUS Tissue Engineering Program, Singapore
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Hee CK, Dines JS, Dines DM, Roden CM, Wisner-Lynch LA, Turner AS, McGilvray KC, Lyons AS, Puttlitz CM, Santoni BG. Augmentation of a rotator cuff suture repair using rhPDGF-BB and a type I bovine collagen matrix in an ovine model. Am J Sports Med 2011; 39:1630-9. [PMID: 21555508 DOI: 10.1177/0363546511404942] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Rotator cuff tears are a common source of shoulder pain. High rates (20%-94%) of structural failure of the repair have been attributed to multiple factors, including poor repair tissue quality and tendon-to-bone integration. Biologic augmentation using growth factors has potential to promote tendon-to-bone integration, improving the function and long-term success of the repair. One such growth factor is platelet-derived growth factor-BB (PDGF-BB), which has been shown to improve healing in tendon and bone repair models. HYPOTHESIS Recombinant human PDGF-BB (rhPDGF-BB) combined with a highly porous type I bovine collagen matrix will improve the biomechanical function and morphologic appearance of the repair in a dose-dependent manner, relative to a suture-only control, after 12 weeks in an acute ovine model of rotator cuff repair. STUDY DESIGN Controlled laboratory study. METHODS An interpositional graft consisting of rhPDGF-BB and a type I collagen matrix was implanted in an ovine model of rotator cuff repair. Biomechanical and histologic analyses were performed to determine the functional and anatomic characteristics of the repair after 12 weeks. RESULTS A significant increase in the ultimate load to failure was observed in repairs treated with 75 µg (1490.5 ± 224.5 N, P = .029) or 150 µg (1486.6 ± 229.0 N, P = .029) of rhPDGF-BB, relative to suture-only controls (910.4 ± 156.1 N) and the 500-µg rhPDGF-BB group (677.8 ± 105.9 N). The 75-µg and 150-µg rhPDGF-BB groups also exhibited increased tendon-to-bone interdigitation histologically. No differences in inflammation or cellularity were observed among treatments. CONCLUSION This study demonstrated that an interpositional graft consisting of rhPDGF-BB (75 or 150 µg) and a type I collagen matrix was able to improve the biomechanical strength and anatomic appearance in an ovine model of rotator cuff repair compared to a suture-only control and the 500-µg rhPDGF-BB group. CLINICAL RELEVANCE Recombinant human PDGF-BB combined with a type I collagen matrix has potential to be used to augment surgical repair of rotator cuff tears, thereby improving clinical success.
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Affiliation(s)
- Christopher K Hee
- Sports Medicine, BioMimetic Therapeutics, Franklin, Tennessee 37067, USA.
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Cho HS, Song IH, Park SY, Sung MC, Ahn MW, Song KE. Individual variation in growth factor concentrations in platelet-rich plasma and its influence on human mesenchymal stem cells. Korean J Lab Med 2011; 31:212-8. [PMID: 21779198 PMCID: PMC3129355 DOI: 10.3343/kjlm.2011.31.3.212] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 04/27/2011] [Accepted: 05/12/2011] [Indexed: 12/14/2022] Open
Abstract
Background The objective of this study was to explore whether individual variations in the concentration of growth factors (GFs) influence the biologic effects of platelet-rich plasma (PRP) on human mesenchymal stem cells (HMSCs). Methods The concentrations of 7 representative GFs in activated PRP (aPRP) were measured using ELISA. The effects of PRP on the proliferation and alkaline phosphatase (ALP) activity of HMSCs were examined using several concentrations of aPRP from 3 donors; the relationships between the GF levels and these biologic effects were then evaluated using 10% aPRP from 5 subgroups derived from 39 total donors. HMSCs were cultured in DMEM with the addition of aPRP for 4 or 12 days; then, DNA content and ALP activity were measured. Results The quantity of DNA increased significantly at a 10% concentration of aPRP, but the ALP activity was suppressed at this concentration of aPRP. The GF concentrations varied among donors, and 5 subgroups of characteristic GF release patterns were identified via cluster analysis. DNA levels differed significantly between groups and tended to be higher in groups with higher concentrations of transforming growth factor-beta1 (TGF-β1) and platelet-derived growth factors (PDGFs). DNA quantity was positively correlated with TGF-β1 concentration, and was negatively correlated with donor age. ALP activity was negatively correlated with PDGF-BB concentration. Conclusions The varying GF concentrations may result in different biologic effects; thus, individual differences in GF levels should be considered for reliable interpretation of the biologic functions and standardized application of PRP.
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Affiliation(s)
- Hee Soon Cho
- Department of Laboratory Medicine, College of Medicine, Yeungnam University, Daegu, Korea
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Lee UL, Jeon SH, Park JY, Choung PH. Effect of platelet-rich plasma on dental stem cells derived from human impacted third molars. Regen Med 2011; 6:67-79. [PMID: 21175288 DOI: 10.2217/rme.10.96] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
AIM Platelet-rich plasma (PRP) is fabricated from autologous blood and extensively used to promote soft and hard tissue healing. In the dental field, autologous PRP is widely used combined with dental implant installation and bone graft. This study will evaluate the biologic effect of PRP on the proliferation and the differentiation of human dental stem cells, and find the key cytokines inducing these effects to estimate the clinical feasibility of PRP for dental tissue engineering. MATERIALS & METHODS Venous blood was obtained from four individuals and each PRP was fabricated. The human dental stem cells were obtained from the periodontal ligament (PDL) and dental pulp of the surgically extracted human third molars and expanded in vitro. Immunocytochemical staining and flow cytometry with STRO-1 and CD146 confirmed existence of mesenchymal stem cells in the PDL and dental pulp. The effect of PRP on the proliferation of PDL stem cells (PDLSCs) and dental pulp stem cells (DPSCs) was assessed by colony-forming ability measurement, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and bromodeoxyuridine incorporation assay. Alkaline phosphatase activity and calcium deposit were measured to evaluate the mineralization effect of PRP PDLSCs and DPSCs. Alizarin red S staining was used to detect mineral nodules. Odontogenic and osteogenic gene expressions were evaluated in the PRP-treated PDLSCs and DPSCs by real-time quantitative PCR. A protein array was performed to detect the key cytokines that have an important role in the tissue regenerative effect of PRP. RESULTS Flow cytometry cell sorting showed that the cells from human PDL and dental pulp contained mesenchymal stem cell populations. Colony-forming ability and cellular proliferation of the dental stem cells were increased at 0.5 and 1% PRP concentration but decreased at 5% concentration. Long-term treatment with 1% PRP enhanced proliferation of the human dental stem cells PDLSCs and DPSCs by 120 h and showed the most significant enhancement at 96 h. PRP also promoted mineralization differentiation of the two kinds of dental stem cells as shown by measurement of alkaline phosphatase activity and calcium deposit under mineralization conditioned media. Increased formation of mineral nodules stained with alizarin red was observed in both PDLSCs and DPSCs after treatment with 1% PRP. Real-time quantitative PCR showed higher odontogenic and osteogenic gene expressions in PRP-treated PDLSCs and DPSCs. RANTES/CCL5 and ICAM-1 were the two key cytokines that were detected in human cytokine array with PRP. CONCLUSION The appropriate concentration of the PRP treatment enhanced proliferation and mineralization differentiation of human dental stem cells. RANTES/CCL5 and ICAM-1 might play an important role in PRP-induced tissue regeneration but further study is needed to investigate the whole mechanism.
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Affiliation(s)
- Ui-Lyong Lee
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, South Korea
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Kang SG, Shinojima N, Hossain A, Gumin J, Yong RL, Colman H, Marini F, Andreeff M, Lang FF. Isolation and perivascular localization of mesenchymal stem cells from mouse brain. Neurosurgery 2011; 67:711-20. [PMID: 20651630 DOI: 10.1227/01.neu.0000377859.06219.78] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Although originally isolated from the bone marrow, mesenchymal stem cells (MSCs) have recently been detected in other tissues. However, little is known about MSCs in the brain. OBJECTIVE To determine the extent to which cells with the features of MSCs exist in normal brain tissue and to determine the location of these cells in the brain. METHODS Single-cell suspensions from mouse brains were cultured according to the same methods used for culturing bone marrow-derived MSCs (BM-MSCs). These brain-derived cells were analyzed by fluorescence-activated cell sorting for surface markers associated with BM-MSCs (stem cell antigen 1 [Sca-1+], CD9+, CD45-, CD11b-, and CD31-). Brain-derived cells were exposed to mesenchymal differentiation conditions. To determine the locations of these cells within the brain, sections of normal brains were analyzed by immunostaining for Sca-1, CD31, and nerve/glial antigen 2. RESULTS Cells morphologically similar to mouse BM-MSCs were identified and called brain-derived MSCs (Br-MSCs). Fluorescence-activated cell sorting indicated that the isolated cells had a surface marker profile similar to BM-MSCs, ie, Sca-1V+, CD9+, CD45-, and CD11b-. Like BM-MSCs, Br-MSCs were capable of differentiation into adipocytes, osteocytes, and chondrocytes. Immunostaining indicated that Sca-1+ Br-MSCs are located around blood vessels and may represent progenitor cells that serve as a source of mesenchymal elements (eg, pericytes) within the brain. CONCLUSION Our results indicate that cells similar to BM-MSCs exist in the brain. These Br-MSCs appear to be located within the vascular niche and may provide the mesenchymal elements of this niche. Because MSCs may be part of the cellular response to tissue injury, Br-MSCs may represent targets in the therapy of pathological processes such as stroke, trauma, and tumorigenesis.
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Affiliation(s)
- Seok-Gu Kang
- Department of Neurosurgery, University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030-4009, USA
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35
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Young CS, Bradica G, Hart CE, Karunanidhi A, Street RM, Schutte L, Hollinger JO. Preclinical Toxicology Studies of Recombinant Human Platelet-Derived Growth Factor-BB Either Alone or in Combination with Beta-Tricalcium Phosphate and Type I Collagen. J Tissue Eng 2011; 2010:246215. [PMID: 21350649 PMCID: PMC3040557 DOI: 10.4061/2010/246215] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Accepted: 12/14/2010] [Indexed: 11/20/2022] Open
Abstract
Human platelet-derived growth factor-BB (hPDGF-BB) is a basic polypeptide growth factor released from platelets at the injury site. It is a multifunctional molecule that regulates DNA synthesis and cell division and induces biological effects that are implicated in tissue repair, atherosclerosis, inflammatory responses, and neoplastic diseases. This paper is an overview of the toxicology data generated from a broad testing platform to determine bone, soft tissue, and systemic responses following administration of rhPDGF-BB. Moreover, the systemic and local toxicity of recombinant human PDGF-BB (rhPDGF-BB) in combination with either beta-tricalcium phosphate (β-TCP) or collagen combined with β-TCP was studied to determine dermal sensitization, irritation, intramuscular tissue responses, pyrogenicity, genotoxicity, and hemolytic properties. All data strongly suggest that rhPDGF-BB either alone or in combination with β-TCP or collagen with β-TCP is biocompatible and has neither systemic nor local toxicity, supporting its safe use in enhancing wound healing in patients.
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Affiliation(s)
- Conan S Young
- Research and Development, Advanced BioHealing, Inc., 214 Overlook Circle, Suite 205, Brentwood, TN 37027, USA
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Wallmichrath J, Stark GB, Kneser U, Andree C, Voigt M, Horch RE, Schaefer DJ. Epidermal growth factor (EGF) transfection of human bone marrow stromal cells in bone tissue engineering. J Cell Mol Med 2010; 13:2593-2601. [PMID: 19067768 DOI: 10.1111/j.1582-4934.2008.00600.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
A novel therapeutic approach for the treatment of bone defects is gene therapy assisted bone tissue engineering using bone marrow stromal cells (hBMSC). The aim of this study was to investigate the influence of human epidermal growth factor (hEGF) on proliferation and alkaline phosphatase (AP) activity of primary hBMSC in vitro. hBMSC cultures were achieved by explantation culture of bone chips. Following exposure to 0-10 ng recombinant hEGF (rhEGF)/ml cell numbers were determined by automated cell counting and cell bound AP activity was measured spectrophotometrically. hBMSC were transfected with hEGF plasmids and the proliferative effect was studied by cocultivation of transfected and untreated cells using porous cell culture inserts. The persistence of hEGF expression even after cell transfer was studied by the generation of possibly osteogenic constructs introducing transfected hBMSC in fibrin glue and bovine cancellous bone. The maximum increase in proliferation (156 +/- 7%) and AP activity (220 +/- 34%) was detected after exposition to 10 ng rhEGF/ml. In the separation chamber assay transfected cells produced hEGF concentrations up to 3.6 ng/ml, which induced a mean proliferation increase of 93% which could be significantly inhibited by a neutralizing hEGF antibody. Further, EGFsecretion of transfected hBMSC in 3D-culture was verified. Recombinant and transgenic hEGF stimulate proliferation of primary hBMSC in vitro. Lipotransfection of hBMSC with hEGF plasmids allows the transient and site directed delivery of biologically active transgenic hEGF. The introduction of mitogenic, angiogenic and chemoattractive factors in gene therapy assisted bone tissue engineering is discussed by the example of EGF.
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Affiliation(s)
- J Wallmichrath
- Plastic, Hand- and Microsurgery, University Hospital Grosshadern, Munich, Germany.,Department of Plastic and Hand Surgery, University Hospital, Freiburg, Germany
| | - G B Stark
- Department of Plastic and Hand Surgery, University Hospital, Freiburg, Germany
| | - U Kneser
- Department of Plastic and Hand Surgery, University Hospital, Freiburg, Germany.,Department of Plastic and Hand Surgery, University of Erlangen Medical Center, Erlangen, Germany
| | - C Andree
- Department of Plastic and Hand Surgery, University Hospital, Freiburg, Germany.,Plastic and Aesthetic Surgery, Sana Kliniken Duesseldorf GmbH, Krankenhaus Gerresheim, Duesseldorf, Germany
| | - M Voigt
- Department of Plastic and Hand Surgery, University Hospital, Freiburg, Germany.,Plastic Aesthetic Surgery Freiburg, Freiburg, Germany
| | - R E Horch
- Department of Plastic and Hand Surgery, University Hospital, Freiburg, Germany.,Department of Plastic and Hand Surgery, University of Erlangen Medical Center, Erlangen, Germany
| | - D J Schaefer
- Department of Plastic and Hand Surgery, University Hospital, Freiburg, Germany.,Department of Plastic, Reconstructive and Aesthetic Surgery, Clinic of Reconstructive Surgery, University Hospital, Basel, Switzerland
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Marukawa E, Oshina H, Iino G, Morita K, Omura K. Reduction of bone resorption by the application of platelet-rich plasma (PRP) in bone grafting of the alveolar cleft. J Craniomaxillofac Surg 2010; 39:278-83. [PMID: 20542707 DOI: 10.1016/j.jcms.2010.04.017] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2009] [Revised: 03/08/2010] [Accepted: 04/23/2010] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE We evaluated the effectiveness of platelet-rich plasma (PRP) on the regeneration of autogenous cancellous bone and marrow grafted in the alveolar cleft. DESIGN Twenty patients with alveolar clefts were examined; 6 were the control group and received cancellous bone and marrow grafts without PRP, while the remaining 14 comprised the PRP group and received grafts with PRP. Prior to surgery, 50 ml of blood was withdrawn and 5 ml of PRP gel produced through centrifugal separation. The bone graft mixed with PRP was then packed into the alveolar cleft. Postoperative bone density was assessed as the aluminium-equivalent value on occlusal X-ray films in a qualitative analysis. Quantitative evaluation of regenerated bone was made with computed tomography and panoramic radiographs at 1 month, 6 months and 1 year after surgery. RESULTS Satisfactory bone bridging formation was observed in all patients without any complications. The bone density of the PRP group was lower than that of the control group at 1 week, but the same after 1 month. The added PRP reduced the resorption of regenerated bone postoperatively. CONCLUSION Autogenous cancellous bone grafting with PRP, which significantly reduces postoperative bone resorption, is a reliable technique for alveolar bone grafting of cleft patients.
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Affiliation(s)
- Eriko Marukawa
- Oral and Maxillofacial Surgery, Department of Oral Restitution, Division of Oral Health Sciences, Tokyo Medical and Dental University Graduate School, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
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Bal BS, Rahaman MN, Jayabalan P, Kuroki K, Cockrell MK, Yao JQ, Cook JL. In vivo outcomes of tissue-engineered osteochondral grafts. J Biomed Mater Res B Appl Biomater 2010; 93:164-74. [PMID: 20091911 DOI: 10.1002/jbm.b.31571] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Tissue-engineered osteochondral grafts have been synthesized from a variety of materials, with some success at repairing chondral defects in animal models. We hypothesized that in tissue-engineered osteochondral grafts synthesized by bonding mesenchymal stem cell-loaded hydrogels to a porous material, the choice of the porous scaffold would affect graft healing to host bone, and the quality of cell restoration at the hyaline cartilage surface. Bone marrow-derived allogeneic mesenchymal stem cells were suspended in hydrogels that were attached to cylinders of porous tantalum metal, allograft bone, or a bioactive glass. The tissue-engineered osteochondral grafts, thus created were implanted into experimental defects in rabbit knees. Subchondral bone restoration, defect fill, bone ingrowth-implant integration, and articular tissue quality were compared between the three subchondral materials at 6 and 12 weeks. Bioactive glass and porous tantalum were superior to bone allograft in integrating to adjacent host bone, regenerating hyaline-like tissue at the graft surface, and expressing type II collagen in the articular cartilage.
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Affiliation(s)
- B Sonny Bal
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri, USA.
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Haleem AM, Chu CR. Advances in Tissue Engineering Techniques for Articular Cartilage Repair. ACTA ACUST UNITED AC 2010; 20:76-89. [PMID: 29430164 DOI: 10.1053/j.oto.2009.10.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The limited repair potential of human articular cartilage contributes to development of debilitating osteoarthritis and remains a great clinical challenge. This has led to evolution of cartilage treatment strategies from palliative to either reconstructive or reparative methods in an attempt to delay or "bridge the gap" to joint replacement. Further development of tissue engineering-based cartilage repair methods have been pursued to provide a more functional biological tissue. Currently, tissue engineering of articular cartilage has three cornerstones; a cell population capable of proliferation and differentiation into mature chondrocytes, a scaffold that can host these cells, provide a suitable environment for cellular functioning and serve as a sustained-release delivery vehicle of chondrogenic growth factors and thirdly, signaling molecules and growth factors that stimulate the cellular response and the production of a hyaline extracellular matrix (ECM). The aim of this review is to summarize advances in each of these three fields of tissue engineering with specific relevance to surgical techniques and technical notes.
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Affiliation(s)
- A M Haleem
- Department of Orthopedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - C R Chu
- Department of Orthopedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Artificial cell microencapsulated stem cells in regenerative medicine, tissue engineering and cell therapy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 670:68-79. [PMID: 20384219 DOI: 10.1007/978-1-4419-5786-3_7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Adult stem cells, especially isolated from bone marrow, have been extensively investigated in recent years. Studies focus on their multiple plasticity oftransdifferentiating into various cell lineages and on their potential in cellular therapy in regenerative medicine. In many cases, there is the need for tissue engineering manipulation. Among the different approaches of stem cells tissue engineering, microencapsulation can immobilize stem cells to provide a favorable microenvironment for stem cells survival and functioning. Furthermore, microencapsulated stem cells are immunoisolated after transplantation. We show that one intraperitoneal injection of microencapsulated bone marrow stem cells can prolong the survival of liver failure rat models with 90% of the liver removed surgically. In addition to transdifferentiation, bone marrow stem cells can act as feeder cells. For example, when coencapsulated with hepatocytes, stem cells can increase the viability and function of the hepatocytes in vitro and in vivo.
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Jeng LB, Chung HY, Lin TM, Chen JP, Chen YL, Lu YL, Wang YJ, Chang SCN. Characterization and osteogenic effects of mesenchymal stem cells on microbeads composed of hydroxyapatite nanoparticles/reconstituted collagen. J Biomed Mater Res A 2009; 91:886-93. [DOI: 10.1002/jbm.a.32293] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Osteoinductive gel in cementless hip joint replacement: a randomized prospective study. CURRENT ORTHOPAEDIC PRACTICE 2009. [DOI: 10.1097/bco.0b013e3181a56cff] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
Cartilage repair is a very successful pioneering area of regenerative medicine in which techniques of in situ regeneration and cell and tissue transplantation dominate over cell-free approaches to generate durable neocartilage. This review concentrates on advantages and limitations of mesenchymal stem cell (MSC)-based cartilage repair strategies induced by marrow stimulation. Detailed knowledge on the biology of MSC will be discussed in light of the requirements for MSC recruitment, retention, proliferation and chondrogenic differentiation. An improved microenvironment with timely correlated signals from biomaterials, growth factors, proteases, adjacent cartilage and subchondral bone may be key to a third generation of techniques to regenerate hyaline cartilage.
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Affiliation(s)
- W Richter
- Department of Experimental Orthopaedics, Orthopaedic University Hospital, Heidelberg, Germany.
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Kuo TK, Ho JH, Lee OK. Mesenchymal Stem Cell Therapy for Nonmusculoskeletal Diseases: Emerging Applications. Cell Transplant 2009; 18:1013-28. [DOI: 10.3727/096368909x471206] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Mesenchymal stem cells are stem/progenitor cells originated from the mesoderm and can different into multiple cell types of the musculoskeletal system. The vast differentiation potential and the relative ease for culture expansion have established mesenchymal stem cells as the building blocks in cell therapy and tissue engineering applications for a variety of musculoskeletal diseases, including repair of fractures and bone defects, cartilage regeneration, treatment of osteonecrosis of the femoral head, and correction of genetic diseases such as osteogenesis imperfect. However, research in the past decade has revealed differentiation potentials of mesenchymal stem cells beyond lineages of the mesoderm, suggesting broader applications than originally perceived. In this article, we review the recent developments in mesenchymal stem cell research with respect to their emerging properties and applications in nonmusculoskeletal diseases.
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Affiliation(s)
- Tom K. Kuo
- Stem Cell Research Center, National Yang-Ming University, Taiwan
| | - Jennifer H. Ho
- Graduate Institute of Clinical Medicine, Taipei Medical University, Taiwan
- Department of Ophthalmology, Taipei Medical University-Wan Fang Hospital, Taiwan
| | - Oscar K. Lee
- Stem Cell Research Center, National Yang-Ming University, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University, Taiwan
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taiwan
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Gruber R, Karreth F, Kandler B, Fuerst G, Rot A, Fischer MB, Watzek G. Platelet-released supernatants increase migration and proliferation, and decrease osteogenic differentiation of bone marrow-derived mesenchymal progenitor cells underin vitroconditions. Platelets 2009; 15:29-35. [PMID: 14985174 DOI: 10.1080/09537100310001643999] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Platelet-rich plasma is currently promoted to serve as an adjuvant for bone grafts to enhance quantity and quality of newly forming bone; however, the underlying cellular mechanisms are not fully understood. We show here that supernatants of leukocyte-depleted thrombin-activated platelets increase migration and proliferation, and decrease osteogenic differentiation of bone marrow-derived mesenchymal progenitor cells under in vitro conditions. Using neutralizing antibodies raised against platelet-derived growth factor (PDGF), the observed effects of platelet-released supernatants were diminished. The mitogenic response was also decreased when extracellular signal-regulated protein kinase (ERK) signalling was inhibited by PD98059; however, PD98059 did not reverse the effects of platelet-released supernatants on migration and osteogenic differentiation. Consistent with an ERK-mediated mitogenic activity, incubation of serum-starved mesenchymal cell progenitors with platelet-released supernatants increased phosphorylation of the kinase. Together, these observations indicate that PDGF is a key factor released upon platelet activation that can increase migration and proliferation, and decreases osteogenic differentiation of mesenchymal progenitor cells under in vitro conditions. The results further suggest that ERK signalling is required to mediate the mitogenic response to platelet-released supernatants.
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Affiliation(s)
- Reinhard Gruber
- Dental School , Deparment of Oral Surgery, Uibersity of Vienna, Austria.
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The effectiveness of bone mineral density as supplementary tool for evaluation of the osteogenic potential in patients with spinal fusion. Asian Spine J 2009; 3:1-9. [PMID: 20404939 PMCID: PMC2852037 DOI: 10.4184/asj.2009.3.1.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2009] [Revised: 04/28/2009] [Accepted: 05/04/2009] [Indexed: 11/08/2022] Open
Abstract
Study Design Retrospective study. Purpose This study was designed to determine the effectiveness of bone mineral density measurement as a supplementary tool for evaluation of osteogenic potential in patients with spinal fusion. To this end, we correlated bone mineral density (BMD) with osteogenic potential from cultured mesenchymal stem cells (MSCs). Overview of Literature Many studies have correlated osteogenic potential of in vitro cultured MSCs with aging or osteoporosis. Methods We studied twenty-five individuals with harvested bone marrow from the ilium during lumbar spinal surgery. The BMD of the femoral neck was measured using dual energy X-ray absorptiometry prior to bone marrow aspiration, and the osteoporotic group was classified as those with T-scores below-2.5. After MSCs were isolated from bone marrow, in vitro induction of osteogenesis was performed. We analyzed the patient's osteogenic potential from cultured MSCs such as mineral deposition stain, bone alkaline phosphatase (ALP) activity and osteoblast-specific gene expression in RT-PCR. Results On mineral staining, the osteoporotic group had a scanty matrix mineral deposition in contrast to the non-osteoporotic group. The expression of osteocalcin in the osteoporotic group was 1.5 to 3 times less than in the non-osteoporotic group. At the 3rd week after the induction of osteogenesis, the activity of ALP of cultured MSCs in the osteoporotic group was lower than in the control group (mean, 45±19 u/L, in osteoporotic group vs 136±7 u/L in non-osteoporotic), and there was a statistically significant and positive correlation between BMD & ALP (r=0.487, p=0.013). Conclusions There is a positive correlation between BMD and osteogenic potential derived from MSCs. The measurement of BMD can provide supplementary data for evaluating osteogenic potential clinically.
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Zhang Y, Shi B, Li C, Wang Y, Chen Y, Zhang W, Luo T, Cheng X. The synergetic bone-forming effects of combinations of growth factors expressed by adenovirus vectors on chitosan/collagen scaffolds. J Control Release 2009; 136:172-8. [DOI: 10.1016/j.jconrel.2009.02.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2008] [Revised: 02/10/2009] [Accepted: 02/10/2009] [Indexed: 11/17/2022]
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Keeney M, Pandit A. The osteochondral junction and its repair via bi-phasic tissue engineering scaffolds. TISSUE ENGINEERING PART B-REVIEWS 2009; 15:55-73. [PMID: 19207035 DOI: 10.1089/ten.teb.2008.0388] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The osteochondral junction is the interface between bone and cartilage. Chondroid bone forms the intermediate between the two tissue types. Damage to the cartilage surface often results in degeneration of the subchondral region. This region is comprised of different cell types and varied composition of extracellular matrix. Hence, dual regeneration strategies have been investigated to simultaneously regenerate both tissue types. Bi-phasic constructs have been developed to deliver the necessary cells, growth factors, and mechanical support to facilitate regeneration. This review discusses the use of biphasic scaffolds to promote the repair, development, and function of the osteochondral junction.
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Affiliation(s)
- Michael Keeney
- National Centre for Biomedical Engineering Science, National University of Ireland, Galway, Ireland
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Abstract
Articular cartilage repair remains a challenge to surgeons and basic scientists. The field of tissue engineering allows the simultaneous use of material scaffolds, cells and signalling molecules to attempt to modulate the regenerative tissue. This review summarises the research that has been undertaken to date using this approach, with a particular emphasis on those techniques that have been introduced into clinical practice, via in vitro and preclinical studies.
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Affiliation(s)
- A. Getgood
- Orthopaedic Research Unit The University of Cambridge Orthopaedic Research Unit, Box 180, Addenbrooke’s Hospital, Hills Road, Cambridge CB2 2QQ, UK
| | - R. Brooks
- Orthopaedic Research Unit The University of Cambridge Orthopaedic Research Unit, Box 180, Addenbrooke’s Hospital, Hills Road, Cambridge CB2 2QQ, UK
| | - L. Fortier
- Cornell University College of Veterinary Medicine, Vet Box 32, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA
| | - N. Rushton
- Orthopaedic Research Unit The University of Cambridge Orthopaedic Research Unit, Box 180, Addenbrooke’s Hospital, Hills Road, Cambridge CB2 2QQ, UK
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Bastiaansen-Jenniskens YM, Koevoet W, De Bart ACW, Zuurmond AM, Bank RA, Verhaar JAN, DeGroot J, van Osch GJVM. TGFbeta affects collagen cross-linking independent of chondrocyte phenotype but strongly depending on physical environment. Tissue Eng Part A 2009. [PMID: 19230128 DOI: 10.1089/tea.2007.0345] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Transforming growth factor beta (TGFbeta) is often used in cartilage tissue engineering to increase matrix formation by cells with various phenotypes. However, adverse effects of TGFbeta, such as extensive crosslinking in cultured fibroblasts, have also been reported. Our goal was to study effects of TGFbeta on collagen cross-linking and evaluating the role of cellular phenotype and physical environment. We therefore used four different cell populations in two very different physical environments: primary and expanded chondrocytes and fibroblasts embedded in alginate gel and attached to tissue culture plastic. Matrix production, collagen cross-linking, and alpha-smooth muscle actin (alphaSMA) were analyzed during 4 weeks with or without 2.5 ng/ mL TGFbeta2. TGFbeta2 did not affect collagen deposition by primary cells. In expanded cells, TGFbeta2 increased collagen deposition. Chondrocytes and fibroblasts in monolayer produced more collagen cross-links with TGFbeta2. In alginate, primary and expanded cells displayed an unexpected decrease in collagen cross-linking with TGFbeta2. alphaSMA was not present in alginate cultures and barely upregulated by TGFbeta2. Organized alphaSMA fibers were present in all monolayer cultures and became more pronounced with TGFbeta2. This study demonstrates that the physical environment determined by the substrate used co-determines the response of cells to TGFbeta. The presence of mechanical stress, determined with alphaSMA-staining, is probably responsible for the increase in collagen cross-linking upon addition of TGFbeta.
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