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Zhao J, Zhang D, Lan Q, Zhong G, Liu Y, Holwell N, Wang X, Meng J, Yao J, Amsden BG, Yu Y, Chen F. Tendon Decellularized Matrix Modified Fibrous Scaffolds with Porous and Crimped Microstructure for Tendon Regeneration. ACS APPLIED BIO MATERIALS 2024; 7:4747-4759. [PMID: 39005189 DOI: 10.1021/acsabm.4c00565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Current engineered synthetic scaffolds fail to functionally repair and regenerate ruptured native tendon tissues, partly because they cannot satisfy both the unique biological and biomechanical properties of these tissues. Ideal scaffolds for tendon repair and regeneration need to provide porous topographic structures and biological cues necessary for the efficient infiltration and tenogenic differentiation of embedded stem cells. To obtain crimped and porous scaffolds, highly aligned poly(l-lactide) fibers were prepared by electrospinning followed by postprocessing. Through a mild and controlled hydrogen gas foaming technique, we successfully transformed the crimped fibrous mats into three-dimensional porous scaffolds without sacrificing the crimped microstructure. Porcine derived decellularized tendon matrix was then grafted onto this porous scaffold through fiber surface modification and carbodiimide chemistry. These biofunctionalized, crimped, and porous scaffolds supported the proliferation, migration, and tenogenic induction of tendon derived stem/progenitor cells, while enabling adhesion to native tendons. Together, our data suggest that these biofunctionalized scaffolds can be exploited as promising engineered scaffolds for the treatment of acute tendon rupture.
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Affiliation(s)
- Jianping Zhao
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Department of Orthopedics Trauma and Hand Surgery & Guangxi Key Laboratory of Regenerative Medicine, International Joint Laboratory on Regeneration of Bone and Soft Tissue, The First Affiliated Hospital of Guangxi Medical University, Nanning 530007, China
| | - Di Zhang
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Qiumei Lan
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Gang Zhong
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yisi Liu
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Nathaniel Holwell
- Department of Chemical Engineering, Queen's University, Kingston K7L 3N6, Canada
| | - Xiang Wang
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Jinzhi Meng
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Department of Orthopedics Trauma and Hand Surgery & Guangxi Key Laboratory of Regenerative Medicine, International Joint Laboratory on Regeneration of Bone and Soft Tissue, The First Affiliated Hospital of Guangxi Medical University, Nanning 530007, China
| | - Jun Yao
- Department of Orthopedics Trauma and Hand Surgery & Guangxi Key Laboratory of Regenerative Medicine, International Joint Laboratory on Regeneration of Bone and Soft Tissue, The First Affiliated Hospital of Guangxi Medical University, Nanning 530007, China
| | - Brian G Amsden
- Department of Chemical Engineering, Queen's University, Kingston K7L 3N6, Canada
| | - Yin Yu
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Fei Chen
- Center for Materials Synthetic Biology, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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Darrieutort-Laffite C, Blanchard F, Soslowsky LJ, Le Goff B. Biology and physiology of tendon healing. Joint Bone Spine 2024; 91:105696. [PMID: 38307405 DOI: 10.1016/j.jbspin.2024.105696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/11/2024] [Accepted: 01/23/2024] [Indexed: 02/04/2024]
Abstract
Tendon disorders affect people of all ages, from elite and recreational athletes and workers to elderly patients. After an acute injury, 3 successive phases are described to achieve healing: an inflammatory phase followed by a proliferative phase, and finally by a remodeling phase. Despite this process, healed tendon fails to recover its original mechanical properties. In this review, we proposed to describe the key factors involved in the process such as cells, transcription factors, extracellular matrix components, cytokines and growth factors and vascularization among others. A better understanding of this healing process could help provide new therapeutic approaches to improve patients' recovery while tendon disorders management remains a medical challenge.
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Affiliation(s)
- Christelle Darrieutort-Laffite
- Service de rhumatologie, CHU de Nantes, Nantes, France; Oniris, Regenerative Medicine and Skeleton, RMeS, UMR 1229, Inserm, CHU de Nantes, Nantes université, 44000 Nantes, France.
| | - Frédéric Blanchard
- Oniris, Regenerative Medicine and Skeleton, RMeS, UMR 1229, Inserm, CHU de Nantes, Nantes université, 44000 Nantes, France
| | - Louis J Soslowsky
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, PA, USA
| | - Benoit Le Goff
- Service de rhumatologie, CHU de Nantes, Nantes, France; Oniris, Regenerative Medicine and Skeleton, RMeS, UMR 1229, Inserm, CHU de Nantes, Nantes université, 44000 Nantes, France
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Mienaltowski MJ, Callahan M, Gonzales NL, Wong A. Examining the Potential of Vitamin C Supplementation in Tissue-Engineered Equine Superficial Digital Flexor Tendon Constructs. Int J Mol Sci 2023; 24:17098. [PMID: 38069418 PMCID: PMC10707379 DOI: 10.3390/ijms242317098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/26/2023] [Accepted: 12/01/2023] [Indexed: 12/18/2023] Open
Abstract
Because equine tendinopathies are slow to heal and often recur, therapeutic strategies are being considered that aid tendon repair. Given the success of utilizing vitamin C to promote tenogenesis in other species, we hypothesized that vitamin C supplementation would produce dose-dependent improvements in the tenogenic properties of tendon proper (TP) and peritenon (PERI) cells of the equine superficial digital flexor tendon (SDFT). Equine TP- and PERI-progenitor-cell-seeded fibrin three-dimensional constructs were supplemented with four concentrations of vitamin C. The gene expression profiles of the constructs were assessed with 3'-Tag-Seq and real-time quantitative polymerase chain reaction (RT-qPCR); collagen content and fibril ultrastructure were also analyzed. Moreover, cells were challenged with dexamethasone to determine the levels of cytoprotection afforded by vitamin C. Expression profiling demonstrated that vitamin C had an anti-inflammatory effect on TP and PERI cell constructs. Moreover, vitamin C supplementation mitigated the degenerative pathways seen in tendinopathy and increased collagen content in tendon constructs. When challenged with dexamethasone in two-dimensional culture, vitamin C had a cytoprotective effect for TP cells but not necessarily for PERI cells. Future studies will explore the effects of vitamin C on these cells during inflammation and within the tendon niche in vivo.
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Affiliation(s)
- Michael J. Mienaltowski
- Department of Animal Science, College of Agricultural & Environmental Sciences, University of California Davis, Davis, CA 95616, USA
| | - Mitchell Callahan
- Department of Animal Science, College of Agricultural & Environmental Sciences, University of California Davis, Davis, CA 95616, USA
| | - Nicole L. Gonzales
- School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
| | - Angelique Wong
- Department of Animal Science, College of Agricultural & Environmental Sciences, University of California Davis, Davis, CA 95616, USA
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Wang S, Yao Z, Chen L, Li J, Chen S, Fan C. Preclinical assessment of IL-1β primed human umbilical cord mesenchymal stem cells for tendon functional repair through TGF-β/IL-10 signaling. Heliyon 2023; 9:e21411. [PMID: 37954299 PMCID: PMC10638607 DOI: 10.1016/j.heliyon.2023.e21411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/14/2023] Open
Abstract
Background Inadequate repair capacity and disturbed immune compartments are the main pathological causes of tendinopathy. Transplantation of mesenchymal stem cells (MSCs) become an effective clinic option to alleviate tendinopathy. Interleukin-1β (IL-1β) could confer on MSCs enhanced immunoregulatory capability to remodel the repair microenvironment favoring tissue repair. Therefore, IL-1β activated UC-MSCs (1βUC-MSCs) may exert favorable efficacy in promoting tendon repair in a preclinical tendinopathy rat model. Methods Tendon-derived stem cells (TDSCs) were isolated and characterized. In vitro, the levels of immunoregulatory-related cytokines such as IL-1β, IL-6, IL-10, and TGF-β secreted by 1βUC-MSCs and unprimed UC-MSCs was measured. And tendon-specific markers expressed by TDSCs cultured with primed cultured medium (CM) or unprimed CM were detected. In vivo, Achilles tendinopathy was induced by 30 μL collagenase I injection in Sprague Dawley rats. One week later, the rats were randomly injected with UC-MSCs primed with IL-1β (106 cells per tendon), UC-MSCs, or PBS. After rats were sacrificed, histological evaluation, electron microscopy, biomechanical tests, gait performance were conducted to evaluate the structural and functional recovery of Achilles tendons. The inflammation and metabolic state of the extracellular matrix, and the potential mechanism were assessed by immunohistochemical staining and Western blot. Results UC-MSCs were activated by IL-1β to secrete higher levels of IL-10 and TGF-β while the secretion levels of IL-6 and IL-1β were not changed significantly, promoting a higher expression level of COL I and TNMD in TDSCs under proinflammatory environment. In vivo, the transplanted 1βUC-MSCs could survive up to 5 weeks after injection with tenogenic differentiation and improved tendon healing histologically semi-quantified by modified Bonar scores. This structural regeneration was further confirmed by observation of ultrastructural morphology, and led to good functional recovery including improved biomechanical properties and gait performance. During this process, the inflammatory response and metabolism of the extracellular matrix was improved through TGF-β/IL-10 pathway. Conclusion This study demonstrated that the transplantation of UC-MSCs activated by IL-1β exhibited satisfactory ability for promoting tendon functional repair in a tendinopathy rat model. During this process, the balance of inflammatory response and extracellular matrix metabolism was remodeled, and the TGF-β/Smad2/3 and IL-10 signaling pathways were activated simultaneously. We cautiously conclude that the IL-1β primed UC-MSCs could be a promising strategy for enhancing the ability of MSCs to treat tendinopathy.
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Affiliation(s)
- Shikun Wang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
- Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, China
| | - Zhixiao Yao
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
- Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, China
| | - Lei Chen
- Department of Orthopedics, Tongji Hospital, School of Medicine Tongji University, Shanghai, China
| | - Juehong Li
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
- Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, China
| | - Shuai Chen
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
- Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, China
| | - Cunyi Fan
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
- Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai, China
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Clerici M, Citro V, Byrne AL, Dale TP, Boccaccini AR, Della Porta G, Maffulli N, Forsyth NR. Endotenon-Derived Type II Tendon Stem Cells Have Enhanced Proliferative and Tenogenic Potential. Int J Mol Sci 2023; 24:15107. [PMID: 37894787 PMCID: PMC10606148 DOI: 10.3390/ijms242015107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/08/2023] [Accepted: 10/04/2023] [Indexed: 10/29/2023] Open
Abstract
Tendon injuries caused by overuse or age-related deterioration are frequent. Incomplete knowledge of somatic tendon cell biology and their progenitors has hindered interventions for the effective repair of injured tendons. Here, we sought to compare and contrast distinct tendon-derived cell populations: type I and II tendon stem cells (TSCs) and tenocytes (TNCs). Porcine type I and II TSCs were isolated via the enzymatic digestion of distinct membranes (paratenon and endotenon, respectively), while tenocytes were isolated through an explant method. Resultant cell populations were characterized by morphology, differentiation, molecular, flow cytometry, and immunofluorescence analysis. Cells were isolated, cultured, and evaluated in two alternate oxygen concentrations (physiological (2%) and air (21%)) to determine the role of oxygen in cell biology determination within this relatively avascular tissue. The different cell populations demonstrated distinct proliferative potential, morphology, and transcript levels (both for tenogenic and stem cell markers). In contrast, all tendon-derived cell populations displayed multipotent differentiation potential and immunophenotypes (positive for CD90 and CD44). Type II TSCs emerged as the most promising tendon-derived cell population for expansion, given their enhanced proliferative potential, multipotency, and maintenance of a tenogenic profile at early and late passage. Moreover, in all cases, physoxia promoted the enhanced proliferation and maintenance of a tenogenic profile. These observations help shed light on the biological mechanisms of tendon cells, with the potential to aid in the development of novel therapeutic approaches for tendon disorders.
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Affiliation(s)
- Marta Clerici
- School of Pharmacy and Bioengineering, Keele University, Stoke-on-Trent ST4 7QB, UK; (M.C.); (V.C.); (A.L.B.); (T.P.D.); (N.M.)
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy;
| | - Vera Citro
- School of Pharmacy and Bioengineering, Keele University, Stoke-on-Trent ST4 7QB, UK; (M.C.); (V.C.); (A.L.B.); (T.P.D.); (N.M.)
- Institute for Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander-University of Erlangen-Nürnberg, 91058 Erlangen, Germany;
| | - Amy L. Byrne
- School of Pharmacy and Bioengineering, Keele University, Stoke-on-Trent ST4 7QB, UK; (M.C.); (V.C.); (A.L.B.); (T.P.D.); (N.M.)
| | - Tina P. Dale
- School of Pharmacy and Bioengineering, Keele University, Stoke-on-Trent ST4 7QB, UK; (M.C.); (V.C.); (A.L.B.); (T.P.D.); (N.M.)
| | - Aldo R. Boccaccini
- Institute for Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander-University of Erlangen-Nürnberg, 91058 Erlangen, Germany;
| | - Giovanna Della Porta
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy;
- Interdepartmental Centre BIONAM, University of Salerno, Via Giovanni Paolo I, 84084 Fisciano, Italy
| | - Nicola Maffulli
- School of Pharmacy and Bioengineering, Keele University, Stoke-on-Trent ST4 7QB, UK; (M.C.); (V.C.); (A.L.B.); (T.P.D.); (N.M.)
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy;
- Department of Trauma and Orthopaedic Surgery, University Hospital “San Giovanni di Dio e Ruggi D’Aragona”, 84131 Salerno, Italy
- Department of Trauma and Orthopaedics, Faculty of Medicine and Psychology, Sant’Andrea Hospital, Sapienza University, 00189 Rome, Italy
| | - Nicholas R. Forsyth
- School of Pharmacy and Bioengineering, Keele University, Stoke-on-Trent ST4 7QB, UK; (M.C.); (V.C.); (A.L.B.); (T.P.D.); (N.M.)
- Vice Principals’ Office, University of Aberdeen, Kings College, Aberdeen AB24 3FX, UK
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Lu J, Chen H, Lyu K, Jiang L, Chen Y, Long L, Wang X, Shi H, Li S. The Functions and Mechanisms of Tendon Stem/Progenitor Cells in Tendon Healing. Stem Cells Int 2023; 2023:1258024. [PMID: 37731626 PMCID: PMC10509002 DOI: 10.1155/2023/1258024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 08/20/2023] [Accepted: 08/24/2023] [Indexed: 09/22/2023] Open
Abstract
Tendon injury is one of the prevalent disorders of the musculoskeletal system in orthopedics and is characterized by pain and limitation of joint function. Due to the difficulty of spontaneous tendon healing, and the scar tissue and low mechanical properties that usually develops after healing. Therefore, the healing of tendon injury remains a clinical challenge. Although there are a multitude of approaches to treating tendon injury, the therapeutic effects have not been satisfactory to date. Recent studies have shown that stem cell therapy has a facilitative effect on tendon healing. In particular, tendon stem/progenitor cells (TSPCs), a type of stem cell from tendon tissue, play an important role not only in tendon development and tendon homeostasis, but also in tendon healing. Compared to other stem cells, TSPCs have the potential to spontaneously differentiate into tenocytes and express higher levels of tendon-related genes. TSPCs promote tendon healing by three mechanisms: modulating the inflammatory response, promoting tenocyte proliferation, and accelerating collagen production and balancing extracellular matrix remodeling. However, current investigations have shown that TSPCs also have a negative effect on tendon healing. For example, misdifferentiation of TSPCs leads to a "failed healing response," which in turn leads to the development of chronic tendon injury (tendinopathy). The focus of this paper is to describe the characteristics of TSPCs and tenocytes, to demonstrate the roles of TSPCs in tendon healing, while discussing the approaches used to culture and differentiate TSPCs. In addition, the limitations of TSPCs in clinical application and their potential therapeutic strategies are elucidated.
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Affiliation(s)
- Jingwei Lu
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Hui Chen
- Geriatric Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Kexin Lyu
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Li Jiang
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Yixuan Chen
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Longhai Long
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Xiaoqiang Wang
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Houyin Shi
- Spinal Surgery Department, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Sen Li
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
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Tian Z, Yu T, Liu J, Wang T, Higuchi A. Introduction to stem cells. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2023; 199:3-32. [PMID: 37678976 DOI: 10.1016/bs.pmbts.2023.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
Stem cells have self-renewal capability and can proliferate and differentiate into a variety of functionally active cells that can serve in various tissues and organs. This review discusses the history, definition, and classification of stem cells. Human pluripotent stem cells (hPSCs) mainly include embryonic stem cells (hESCs) and induced pluripotent stem cells (hiPSCs). Embryonic stem cells are derived from the inner cell mass of the embryo. Induced pluripotent stem cells are derived from reprogramming somatic cells. Pluripotent stem cells have the ability to differentiate into cells derived from all three germ layers (endoderm, mesoderm, and ectoderm). Adult stem cells can be multipotent or unipotent and can produce tissue-specific terminally differentiated cells. Stem cells can be used in cell therapy to replace and regenerate damaged tissues or organs.
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Affiliation(s)
- Zeyu Tian
- State Key Laboratory of Ophthalmology, Optometry and Visual Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, P.R. China
| | - Tao Yu
- State Key Laboratory of Ophthalmology, Optometry and Visual Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, P.R. China
| | - Jun Liu
- State Key Laboratory of Ophthalmology, Optometry and Visual Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, P.R. China
| | - Ting Wang
- State Key Laboratory of Ophthalmology, Optometry and Visual Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, P.R. China.
| | - Akon Higuchi
- State Key Laboratory of Ophthalmology, Optometry and Visual Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, P.R. China; Department of Chemical and Materials Engineering, National Central University, Jhongli, Taoyuan, Taiwan.
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Ahmed AM, Hussein MR. Telocytes in Cutaneous Biology: A Reappraisal. ACTAS DERMO-SIFILIOGRAFICAS 2023; 114:T229-T239. [PMID: 36690154 DOI: 10.1016/j.ad.2022.08.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/30/2022] [Indexed: 01/22/2023] Open
Abstract
The telocytes (TCs) are novel interstitial cells that have been overlooked for a long time due to their histologic similarity to other stromal cells. TCs can be separated from the stromal cells based on their distinct immunohistochemical, ultrastructural, and molecular features. Functionally, TCs are involved in the tissue renewal, mechanical support, and immune modulation. These cells are also involved in the signal transduction either through their direct interactions with the neighboring cells or through the paracrine signaling via extracellular vesicles. TCs are damaged in several inflammatory and fibrotic conditions such as ulcerative colitis, Crohn's disease, hepatic fibrosis, psoriasis, and systemic sclerosis. The transplantation of TCs in the damaged tissue can promote tissue regeneration. Therefore, enhancing tissue TCs either by their transplantation or by promoting their survival and growth using novel medications represents novel therapeutic strategy in the future. In this review, we addressed several aspects of TCs including their origin, distribution, morphologic features, and functions. We also discussed their involvement of the cutaneous TCs in the development various pathologic conditions.
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Affiliation(s)
- A M Ahmed
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut, Egipto
| | - M R Hussein
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut, Egipto.
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Telocytes in Cutaneous Biology: A Reappraisal. ACTAS DERMO-SIFILIOGRAFICAS 2023; 114:229-239. [PMID: 36332689 DOI: 10.1016/j.ad.2022.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 08/24/2022] [Accepted: 08/30/2022] [Indexed: 12/13/2022] Open
Abstract
The telocytes (TCs) are novel interstitial cells that have been overlooked for a long time due to their histologic similarity to other stromal cells. TCs can be separated from the stromal cells based on their distinct immunohistochemical, ultrastructural, and molecular features. Functionally, TCs are involved in the tissue renewal, mechanical support, and immune modulation. These cells are also involved in the signal transduction either through their direct interactions with the neighboring cells or through the paracrine signaling via extracellular vesicles. TCs are damaged in several inflammatory and fibrotic conditions such as ulcerative colitis, Crohn's disease, hepatic fibrosis, psoriasis, and systemic sclerosis. The transplantation of TCs in the damaged tissue can promote tissue regeneration. Therefore, enhancing tissue TCs either by their transplantation or by promoting their survival and growth using novel medications represents novel therapeutic strategy in the future. In this review, we addressed several aspects of TCs including their origin, distribution, morphologic features, and functions. We also discussed their involvement of the cutaneous TCs in the development various pathologic conditions.
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10
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Immortalized murine tenocyte cells: a novel and innovative tool for tendon research. Sci Rep 2023; 13:1566. [PMID: 36709227 PMCID: PMC9884217 DOI: 10.1038/s41598-023-28318-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 01/17/2023] [Indexed: 01/29/2023] Open
Abstract
Primary tenocytes rapidly undergo senescence and a phenotypic drift upon in vitro monolayer culture, which limits tendon research. The Ink4a/Arf locus encodes the proteins p16Ink4a/Arf and p14ARF (p19ARF in mice) that regulate cell cycle progression and senescence. We here established an immortalized cell line using tenocytes isolated from Ink4a/Arf deficient mice (Ink4a/Arf-/-). These cells were investigated at three distinct time points, at low (2-5), intermediate (14-17) and high (35-44) passages. Wild-type cells at low passage (2-5) served as controls. Ink4a/Arf-/- tenocytes at all stages were comparable to wild-type cells regarding morphology, expression of tenogeneic genes (collagen type 1, 3 and 5, Scleraxis, Tenomodulin and Tenascin-C), and surface markers (CD29, CD44 and CD105) and form 3D tendon-like structures. Importantly, Ink4a/Arf-/- tenocytes maintained their phenotypic features and proliferation potential in culture for more than 40 passages and also following freeze-thaw cycles. In contrast, wild-type tenocytes underwent senescence starting in passage 6. These data define Ink4a/Arf-/- tenocytes as novel tool for in vitro tendon research and as valuable in vitro alternative to animal experiments.
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VEGFA-Enriched Exosomes from Tendon-Derived Stem Cells Facilitate Tenocyte Differentiation, Migration, and Transition to a Fibroblastic Phenotype. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8537959. [PMID: 36119932 PMCID: PMC9481323 DOI: 10.1155/2022/8537959] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/15/2022] [Accepted: 08/26/2022] [Indexed: 11/24/2022]
Abstract
Tendon-derived stem cells (TDSCs) play a vital role in repair of rotator cuff tear injuries by secreting paracrine proteins that regulate resident cell functions. Secreted exosomes may play a role in tendon injury repair by mediating intercellular communication; however, the detailed mechanisms by which TDSC-derived exosomes affect tenocyte development remain unknown. Here, we examined the effects of exosomes isolated from conditioned medium of TDSCs on tenocyte differentiation, migration, and transition to a fibroblastic phenotype in vitro. Successful isolation of exosomes from TDSCs was confirmed by high expression levels of CD81, CD63, CD9, and TSG101. Treatment with TDSC-derived exosomes promoted the growth and migration of cultured rat tenocytes, and increased the levels of the fibrosis markers collagen I, collagen III, scleraxis, tenascin C, and α-smooth muscle actin. Furthermore, vascular endothelial growth factor A (VEGFA) expression was higher in TDSC-derived exosomes than in TDSCs, and genetic knockdown of VEGFA suppressed the stimulatory effect of TDSC-derived exosomes on tenocyte development. Overall, these results demonstrate that VEGFA-enriched exosomes isolated from TDSCs promote differentiation and migration of cultured tenocytes and their transition to a fibroblastic phenotype. These data provide a new potential clinical treatment strategy for tendon injury.
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12
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Enhancement of Tendon Repair Using Tendon-Derived Stem Cells in Small Intestinal Submucosa via M2 Macrophage Polarization. Cells 2022; 11:cells11172770. [PMID: 36078178 PMCID: PMC9454771 DOI: 10.3390/cells11172770] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/08/2022] [Accepted: 07/10/2022] [Indexed: 11/17/2022] Open
Abstract
(1) Background: Reconstruction of Achilles tendon defects and prevention of postoperative tendon adhesions were two serious clinical problems. In the treatment of Achilles tendon defects, decellularized matrix materials and mesenchymal stem cells (MSCs) were thought to address both problems. (2) Methods: In vitro, cell adhesion, proliferation, and tenogenic differentiation of tendon-derived stem cells (TDSCs) on small intestinal submucosa (SIS) were evaluated. RAW264.7 was induced by culture medium of TDSCs and TDSCs–SIS scaffold groups. A rat Achilles tendon defect model was used to assess effects on tendon regeneration and antiadhesion in vivo. (3) Results: SIS scaffold facilitated cell adhesion and tenogenic differentiation of TDSCs, while SIS hydrogel coating promoted proliferation of TDSCs. The expression of TGF-β and ARG-1 in the TDSCs-SIS scaffold group were higher than that in the TDSCs group on day 3 and 7. In vivo, the tendon regeneration and antiadhesion capacity of the implanted TDSCs–SIS scaffold was significantly enhanced. The expression of CD163 was significantly highest in the TDSCs–SIS scaffold group; meanwhile, the expression of CD68 decreased more significantly in the TDSCs–SIS scaffold group than the other two groups. (4) Conclusion: This study showed that biologically prepared SIS scaffolds synergistically promote tendon regeneration with TDSCs and achieve antiadhesion through M2 polarization of macrophages.
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13
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Practical Considerations for Translating Mesenchymal Stromal Cell-Derived Extracellular Vesicles from Bench to Bed. Pharmaceutics 2022; 14:pharmaceutics14081684. [PMID: 36015310 PMCID: PMC9414392 DOI: 10.3390/pharmaceutics14081684] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
Extracellular vesicles (EVs) derived from mesenchymal stromal cells (MSCs) have shown potential for the treatment of tendon and ligament injuries. This approach can eliminate the need to transplant live cells to the human body, thereby reducing issues related to the maintenance of cell viability and stability and potential erroneous differentiation of transplanted cells to bone or tumor. Despite these advantages, there are practical issues that need to be considered for successful clinical application of MSC-EV-based products in the treatment of tendon and ligament injuries. This review aims to discuss the general and tissue-specific considerations for manufacturing MSC-EVs for clinical translation. Specifically, we will discuss Good Manufacturing Practice (GMP)-compliant manufacturing and quality control (parent cell source, culture conditions, concentration method, quantity, identity, purity and impurities, sterility, potency, reproducibility, storage and formulation), as well as safety and efficacy issues. Special considerations for applying MSC-EVs, such as their compatibility with arthroscopy for the treatment of tendon and ligament injuries, are also highlighted.
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14
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Lai F, Wang J, Tang H, Huang P, Liu J, He G, Zhou M, Tao X, Tang K. VEGF promotes tendon regeneration of aged rats by inhibiting adipogenic differentiation of tendon stem/progenitor cells and promoting vascularization. FASEB J 2022; 36:e22433. [PMID: 35867348 DOI: 10.1096/fj.202200213r] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 05/23/2022] [Accepted: 06/13/2022] [Indexed: 11/11/2022]
Abstract
Studies have shown that the stem cell microenvironment is a key factor for stem cell maintenance or differentiation. In this study, we compared the expression of 23 cytokines such as IL-6, IL-10, and TNFα between young and aged rats during patellar tendon repair by cytokine microarray, and found that significant difference between IL-10, G-CSF, and VEGF at 3, 7, or 14 days post-operatively. The effects of these factors on adipogenic differentiation of TPSCs were examined through western blot and oil red O experiments. It was shown that VEGF had an inhibitive effect on the adipogenic differentiation of TPSCs. SPP-1 was figured out as our target by RNA sequencing and confirmed by western blot in vitro. Further in vivo studies showed that adipocyte accumulation was also decreased in the tendons of aged rats after injection of VEGF and the histological score and biomechanical property were also improved via targeting SPP-1. Furthermore, histochemical results showed that vascularization of the injury sites was significantly elevated. In conclusion, VEGF not only plays an important role in decreasing adipocyte accumulation but also improves vascularization of the tendon during aged tendon healing. We believe active regulation of VEGF may improve the treatment of age-related tendon diseases and tendon injuries.
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Affiliation(s)
- Fan Lai
- Department of Sports Medicine Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Jingjing Wang
- Department of Blood Transfusion, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Hong Tang
- Department of Sports Medicine Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Pan Huang
- Department of Sports Medicine Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Juan Liu
- Department of Sports Medicine Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Gang He
- Department of Sports Medicine Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Mei Zhou
- Department of Sports Medicine Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Xu Tao
- Department of Sports Medicine Center, Southwest Hospital, Army Medical University, Chongqing, China
| | - Kanglai Tang
- Department of Sports Medicine Center, Southwest Hospital, Army Medical University, Chongqing, China
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15
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Makuku R, Werthel JD, Zanjani LO, Nabian MH, Tantuoyir MM. New frontiers of tendon augmentation technology in tissue engineering and regenerative medicine: a concise literature review. J Int Med Res 2022; 50:3000605221117212. [PMID: 35983666 PMCID: PMC9393707 DOI: 10.1177/03000605221117212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Tissue banking programs fail to meet the demand for human organs and tissues for
transplantation into patients with congenital defects, injuries, chronic
diseases, and end-stage organ failure. Tendons and ligaments are among the most
frequently ruptured and/or worn-out body tissues owing to their frequent use,
especially in athletes and the elderly population. Surgical repair has remained
the mainstay management approach, regardless of scarring and adhesion formation
during healing, which then compromises the gliding motion of the joint and
reduces the quality of life for patients. Tissue engineering and regenerative
medicine approaches, such as tendon augmentation, are promising as they may
provide superior outcomes by inducing host-tissue ingrowth and tendon
regeneration during degradation, thereby decreasing failure rates and morbidity.
However, to date, tendon tissue engineering and regeneration research has been
limited and lacks the much-needed human clinical evidence to translate most
laboratory augmentation approaches to therapeutics. This narrative review
summarizes the current treatment options for various tendon pathologies, future
of tendon augmentation, cell therapy, gene therapy, 3D/4D bioprinting,
scaffolding, and cell signals.
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Affiliation(s)
- Rangarirai Makuku
- Center for Orthopedic Trans-Disciplinary Applied Research (COTAR), School of Medicine, 48439Tehran University of Medical Sciences, Tehran, Iran.,Department of Orthopedic Surgery, Hospital Ambroise Pare, Boulogne-Billancourt, France
| | - Jean-David Werthel
- Department of Orthopedic and Trauma Surgery, Shariati Hospital, 48439Tehran University of Medical Sciences, Tehran, Iran
| | - Leila Oryadi Zanjani
- Center for Orthopedic Trans-Disciplinary Applied Research (COTAR), School of Medicine, 48439Tehran University of Medical Sciences, Tehran, Iran.,Department of Orthopedic Surgery, Hospital Ambroise Pare, Boulogne-Billancourt, France
| | - Mohammad Hossein Nabian
- Center for Orthopedic Trans-Disciplinary Applied Research (COTAR), School of Medicine, 48439Tehran University of Medical Sciences, Tehran, Iran.,Department of Orthopedic Surgery, Hospital Ambroise Pare, Boulogne-Billancourt, France
| | - Marcarious M Tantuoyir
- Center for Orthopedic Trans-Disciplinary Applied Research (COTAR), School of Medicine, 48439Tehran University of Medical Sciences, Tehran, Iran.,Department of Orthopedic Surgery, Hospital Ambroise Pare, Boulogne-Billancourt, France.,Biomedical Engineering Unit, University of Ghana Medical Centre, Accra, Ghana
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16
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Schulze-Tanzil GG, Delgado-Calcares M, Stange R, Wildemann B, Docheva D. Tendon healing: a concise review on cellular and molecular mechanisms with a particular focus on the Achilles tendon. Bone Joint Res 2022; 11:561-574. [PMID: 35920195 PMCID: PMC9396922 DOI: 10.1302/2046-3758.118.bjr-2021-0576.r1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Tendon is a bradytrophic and hypovascular tissue, hence, healing remains a major challenge. The molecular key events involved in successful repair have to be unravelled to develop novel strategies that reduce the risk of unfavourable outcomes such as non-healing, adhesion formation, and scarring. This review will consider the diverse pathophysiological features of tendon-derived cells that lead to failed healing, including misrouted differentiation (e.g. de- or transdifferentiation) and premature cell senescence, as well as the loss of functional progenitors. Many of these features can be attributed to disturbed cell-extracellular matrix (ECM) or unbalanced soluble mediators involving not only resident tendon cells, but also the cross-talk with immigrating immune cell populations. Unrestrained post-traumatic inflammation could hinder successful healing. Pro-angiogenic mediators trigger hypervascularization and lead to persistence of an immature repair tissue, which does not provide sufficient mechano-competence. Tendon repair tissue needs to achieve an ECM composition, structure, strength, and stiffness that resembles the undamaged highly hierarchically ordered tendon ECM. Adequate mechano-sensation and -transduction by tendon cells orchestrate ECM synthesis, stabilization by cross-linking, and remodelling as a prerequisite for the adaptation to the increased mechanical challenges during healing. Lastly, this review will discuss, from the cell biological point of view, possible optimization strategies for augmenting Achilles tendon (AT) healing outcomes, including adapted mechanostimulation and novel approaches by restraining neoangiogenesis, modifying stem cell niche parameters, tissue engineering, the modulation of the inflammatory cells, and the application of stimulatory factors.Cite this article: Bone Joint Res 2022;11(8):561-574.
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Affiliation(s)
| | - Manuel Delgado-Calcares
- Experimental Trauma Surgery, Department of Trauma Surgery, University Regensburg Medical Centre, Regensburg, Germany
| | - Richard Stange
- Department of Regenerative Musculoskeletal Medicine, Institute for Musculoskeletal Medicine (IMM), University Hospital Münster, Münster, Germany
| | - Britt Wildemann
- Department of Experimental Trauma Surgery, University Hospital Jena, Jena, Germany
| | - Denitsa Docheva
- Department of Musculoskeletal Tissue Regeneration, Orthopaedic Hospital König-Ludwig-Haus, University of Würzburg, Würzburg, Germany
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17
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Global Research Trends in Tendon Stem Cells from 1991 to 2020: A Bibliometric and Visualized Study. Stem Cells Int 2022; 2022:7937765. [PMID: 35765660 PMCID: PMC9233735 DOI: 10.1155/2022/7937765] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 05/28/2022] [Accepted: 05/30/2022] [Indexed: 11/17/2022] Open
Abstract
Background Tendinopathy is a disabling musculoskeletal disorder affecting the athletics and general populations. There have been increased studies using stem cells in treating tendon diseases. The aim of this bibliometric and visualized study is to comprehensively investigate the current status and global trends of research in tendon stem cells. Methods Publications related to tendon stem cells from 1991 to 2020 were retrieved from Web of Science and then indexed using a bibliometric methodology. VOSviewer software was used to conduct the visualized study, including coauthorship, cocitation, and cooccurrence analysis and to analyze the publication trends of research in tendon stem cells. Results In total, 2492 articles were included and the number of publications increased annually worldwide. The United States made the largest contribution to this field, with the most publications (938 papers, 37.64%), citation frequency (68,195 times), and the highest H-index (103). The most contributive institutions were University of Pittsburgh (96 papers), Zhejiang University (70 papers), Shanghai Jiao Tong University, and Chinese University of Hong Kong (both 64 papers). The Journal of Orthopaedic Research published the most relative articles. Studies could be classified into five clusters: “Animal study,” “Tissue engineering,” “Clinical study,” “Mechanism research,” and “Stem cells research”, which show a balanced development trend. Conclusion Publications on tendon stem cells may reached a platform based on current global trends. According to the inherent changes of hotspots in each cluster and the possibilities of cross-research, the research in tendon stem cells may exist a balanced development trend.
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18
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Song K, Jiang T, Pan P, Yao Y, Jiang Q. Exosomes from tendon derived stem cells promote tendon repair through miR-144-3p-regulated tenocyte proliferation and migration. Stem Cell Res Ther 2022; 13:80. [PMID: 35197108 PMCID: PMC8867681 DOI: 10.1186/s13287-022-02723-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 08/27/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Tendon derived stem cells (TDSCs) have proven to be effective in tendon repair by secreting paracrine factors, which modulate the function of resident cells and inflammatory process. Exosomes, which are secreted from cells to mediate intercellular communication, may be used to treat tendon injuries. Here, we aimed to determine the effects of exosomes from TDSCs (TDSC-Exos) on tendon repair and to explore the underlying mechanism by investigating the role of microRNAs (miRNAs). METHODS TDSC-Exos were isolated from TDSC conditioned medium. In vitro studies were performed to investigate the effects of TDSC-Exos on the proliferation, migration, cytoprotection, collagen production and tendon-specific markers expression in tenocytes. In order to determine the therapeutic effects of TDSC-Exos in vivo, we used a scaffold of photopolymerizable hyaluronic acid (p-HA) loaded with TDSC-Exos (pHA-TDSC-Exos) to treat tendon defects in the rat model. Subsequently, RNA sequencing and bioinformatic analyses were used to screen for enriched miRNAs in TDSC-Exos and predict target genes. The miRNA-target transcript interaction was confirmed by a dual-luciferase reporter assay system. In order to determine the role of candidate miRNA and its target gene in TDSC-Exos-regulated tendon repair, miRNA mimic and inhibitor were transfected into tenocytes to evaluate cell proliferation and migration. RESULTS Treatment with TDSC-Exos promoted proliferation, migration, type I collagen production and tendon-specific markers expression in tenocytes, and also protected tenocytes from oxidative stress and serum deprivation. The scaffold of pHA-TDSC-Exos could sever as a sustained release system to treat the rat model of tendon defects. In vivo study showed that TDSC-Exos promoted early healing of injured tendons. Rats treated with TDSC-Exos had better fiber arrangement and histological scores at the injury site. Besides, the injured tendons treated with TDSC-Exos had better performance in the biomechanical testing. Therefore, the pHA-TDSC-Exos scaffold proved to facilitate tendon repair in the rat model. miR-144-3p was enriched in TDSC-Exos and promoted tenocyte proliferation and migration via targeting AT-rich interactive domain 1A (ARID1A). CONCLUSIONS TDSC-Exos enhanced tenon repair through miR-144-3p-regulated tenocyte proliferation and migration. These results suggest that TDSC-Exos can serve as a promising strategy to treat tendon injuries.
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Affiliation(s)
- Kai Song
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, People's Republic of China.,Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing, 210093, Jiangsu, People's Republic of China
| | - Tao Jiang
- Department of Orthopedic Surgery, The Affiliated Yixing Hospital of Jiangsu University, Wuxi, 214200, Jiangsu, People's Republic of China
| | - Pin Pan
- Department of Orthopedic Surgery, The Second People's Hospital of Hefei, Hefei, 230011, Anhui, People's Republic of China
| | - Yao Yao
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, People's Republic of China.,Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing, 210093, Jiangsu, People's Republic of China
| | - Qing Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, Jiangsu, People's Republic of China. .,Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing, 210093, Jiangsu, People's Republic of China.
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19
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Yi H, Wang Y, Liang Q, Mao X. Preclinical and Clinical Amelioration of Bone Fractures with Mesenchymal Stromal Cells: a Systematic Review and Meta-Analysis. Cell Transplant 2022; 31:9636897211051743. [PMID: 35916286 PMCID: PMC9350497 DOI: 10.1177/09636897211051743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Abstract
Even though reunion of bone fracture confronts clinicians, mesenchymal stromal
cells (MSCs) are investigated to be curative in bone fracture. This study aimed
to explore the application potential of MSCs for healing bone fractures. By
inputting search terms and retrieving studies published up to March 2021,
multiple databases, including PubMed, EMBASE, Web of Science, and Cochrane
Library, were searched to identify eligible studies. The mean difference (MD)
and 95% confidence interval (95% CI) were calculated to analyze the main results
in the meta-analysis. Data analysis was performed using Engauge Digitizer 10.8
and R Software. Of the 31 articles, 26 were preclinical studies
(n = 913), and 5 were clinical trials (n =
335). Preclinically, MSCs therapy significantly augmented the progress of bone
regeneration [(bone volume over tissue volume (MD7.35, p <
0.01)], despite some non-significant effects (on the callus index, bone
strength, work to failure, and stiffness). Clinically, the MSC group had a
significantly reduced incidence of poor recovery (odds ratio (OR) 0.30,
p < 0.01); however, a significant decrease in healing
time was not observed in the MSC group (MD 2.47, p = 0.26). In
summary, our data suggest that patients with bone fractures benefited from MSC
administration and that MSCs are a potentially useful agent for bone
regeneration. Despite these satisfactory outcomes, larger randomised clinical
trials (RCTs) are necessary to confirm these findings.
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Affiliation(s)
- Hanxiao Yi
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yang Wang
- Department of Orthopaedics, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Qunying Liang
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiaoqun Mao
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
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20
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Effects of aging on the histology and biochemistry of rat tendon healing. BMC Musculoskelet Disord 2021; 22:949. [PMID: 34781961 PMCID: PMC8594129 DOI: 10.1186/s12891-021-04838-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 10/29/2021] [Indexed: 01/08/2023] Open
Abstract
INTRODUCTION Tendon diseases and injuries are a serious problem for the aged population, often leading to pain, disability and a significant decline in quality of life. The purpose of this study was to determine the influence of aging on biochemistry and histology during tendon healing and to provide a new strategy for improving tendon healing. METHOD A total of 24 Sprague-Dawley rats were equally divided into a young and an aged group. A rat patellar tendon defect model was used in this study. Tendon samples were collected at weeks 2 and 4, and hematoxylin-eosin, alcian blue and immunofluorescence staining were performed for histological analysis. Meanwhile, reverse transcription-polymerase chain reaction (RT-PCR) and western blot were performed to evaluate the biochemical changes. RESULTS The histological scores in aged rats were significantly lower than those in young rats. At the protein level, collagen synthesis-related markers Col-3, Matrix metalloproteinase-1 and Metallopeptidase Inhibitor 1(TIMP-1) were decreased at week 4 in aged rats compared with those of young rats. Though there was a decrease in the expression of the chondrogenic marker aggrecan at the protein level in aged tendon, the Micro-CT results from weeks 4 samples showed no significant difference(p>0.05) on the ectopic ossification between groups. Moreover, we found more adipocytes accumulated in the aged tendon defect with the Oil Red O staining and at the gene and protein levels the markers related to adipogenic differentiation. CONCLUSIONS Our findings indicate that tendon healing is impaired in aged rats and is characterized by a significantly lower histological score, decreased collagen synthesis and more adipocyte accumulation in patellar tendon after repair.
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21
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Hsu GCY, Cherief M, Sono T, Wang Y, Negri S, Xu J, Peault B, James AW. Divergent effects of distinct perivascular cell subsets for intra-articular cell therapy in posttraumatic osteoarthritis. J Orthop Res 2021; 39:2388-2397. [PMID: 33512030 PMCID: PMC8319216 DOI: 10.1002/jor.24997] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 12/30/2020] [Accepted: 01/24/2021] [Indexed: 02/04/2023]
Abstract
Intra-articular injection of mesenchymal stem cells has shown benefit for the treatment of osteoarthritis (OA). However, mesenchymal stem/stromal cells at the origin of these clinical results are heterogenous cell populations with limited cellular characterization. Here, two transgenic reporter mice were used to examine the differential effects of two precisely defined perivascular cell populations (Pdgfrα+ and Pdgfrβ+ cells) from white adipose tissue for alleviation of OA. Perivascular mesenchymal cells were isolated from transgenic Pdgfrα-and Pdgfrβ-CreERT2 reporter animals and delivered as a one-time intra-articular dose to C57BL/6J mice after destabilization of the medial meniscus (DMM). Both Pdgfrα+ and Pdgfrβ+ cell preparations improved metrics of cartilage degradation and reduced markers of chondrocyte hypertrophy. While some similarities in cell distribution were identified within the synovial and perivascular spaces, injected Pdgfrα+ cells remained in the superficial layers of articular cartilage, while Pdgfrβ+ cells were more widely dispersed. Pdgfrβ+ cell therapy prevented subchondral sclerosis induced by DMM, while Pdgfrα+ cell therapy had no effect. In summary, while both cell therapies showed beneficial effects in the DMM model, important differences in cell incorporation, persistence, and subchondral sclerosis were identified.
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Affiliation(s)
- Ginny Ching-Yun Hsu
- Department of Pathology, Johns Hopkins University, Ross Research Building, Room 524A, 720 Rutland Avenue, Baltimore, MD, 21205, United States
| | - Masnsen Cherief
- Department of Pathology, Johns Hopkins University, Ross Research Building, Room 524A, 720 Rutland Avenue, Baltimore, MD, 21205, United States
| | - Takashi Sono
- Department of Pathology, Johns Hopkins University, Ross Research Building, Room 524A, 720 Rutland Avenue, Baltimore, MD, 21205, United States;,Department of Orthopedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yiyun Wang
- Department of Pathology, Johns Hopkins University, Ross Research Building, Room 524A, 720 Rutland Avenue, Baltimore, MD, 21205, United States
| | - Stefano Negri
- Department of Pathology, Johns Hopkins University, Ross Research Building, Room 524A, 720 Rutland Avenue, Baltimore, MD, 21205, United States
| | - Jiajia Xu
- Department of Pathology, Johns Hopkins University, Ross Research Building, Room 524A, 720 Rutland Avenue, Baltimore, MD, 21205, United States
| | - Bruno Peault
- UCLA and Orthopaedic Hospital Department of Orthopaedic Surgery and the Orthopaedic Hospital Research Center, 90095;,Center For Cardiovascular Science and Center for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Aaron W. James
- Department of Pathology, Johns Hopkins University, Ross Research Building, Room 524A, 720 Rutland Avenue, Baltimore, MD, 21205, United States
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22
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Adipogenic differentiation was inhibited by downregulation of PPARγ signaling pathway in aging tendon stem/progenitor cells. J Orthop Surg Res 2021; 16:614. [PMID: 34663381 PMCID: PMC8522149 DOI: 10.1186/s13018-021-02720-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/13/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Tendon stem/progenitor cells (TSPCs) play a vital role in tendon repair and regeneration. Previously we found more adipocytes accumulated in the patellar tendon injury sites in aging rats compared with the young ones, of which the mechanism is still unknown. Here, we want to identify whether erroneous differentiation of TSPCs by aging accounts for the adipocyte accumulation. METHODS TSPCs from young and aging rats were isolated and propagated. Both young and aging TSPCs were induced to differentiate into adipocytes, and Oil red O staining, quantitative real-time polymerase chain reaction (qRT-PCR), western-blot and immunofluorescent staining were used to evaluate the capability of TSPCs. RNA sequencing was utilized to screen out different genes and signaling pathways related to adipogenesis between young and aging TSPCs. RESULTS The Oil red O staining showed there were more adipocytes formed in young TSPCs. Besides, adipogenic markers perilipin, peroxisome proliferator-activated receptor γ (PPARγ), CCAAT/enhancer-binding proteins alpha (C/EBPα) and Fatty acid-binding protein 4 (FABP4) were elevated both at gene and protein level. PPARγ signaling pathway was selected as our target via RNA sequencing. After adding the signaling activators, Rosiglitazone maleate (RM), inhibited adipogenesis of aging TSCs was reversed. CONCLUSIONS In conclusion, aging inhibited adipogenesis of TSPCs by down-regulating PPARγ signaling. It is not likely that the adipocyte accumulation in aging tendon during repair was due to the aging of TSPCs. This may provide new targets for curing aging tendon injuries or tendinopathies.
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23
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Geng Y, Zhao X, Xu J, Zhang X, Hu G, Fu SC, Dai K, Chen X, Patrick YSH, Zhang X. Overexpression of mechanical sensitive miR-337-3p alleviates ectopic ossification in rat tendinopathy model via targeting IRS1 and Nox4 of tendon-derived stem cells. J Mol Cell Biol 2021; 12:305-317. [PMID: 31065679 PMCID: PMC7232128 DOI: 10.1093/jmcb/mjz030] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 01/24/2019] [Accepted: 03/12/2019] [Indexed: 02/07/2023] Open
Abstract
Tendinopathy, which is characterized by the ectopic ossification of tendon, is a common disease occurring in certain population, such as athletes that suffer from repetitive tendon strains. However, the molecular mechanism underlying the pathogenesis of tendinopathy caused by the overuse of tendon is still lacking. Here, we found that the mechanosensitive miRNA, miR-337-3p, had lower expression under uniaxial cyclical mechanical loading in tendon-derived stem cells (TDSCs) and negatively controlled chondro-osteogenic differentiation of TDSCs. Importantly, downregulation of miR-337-3p expression was also observed in both rat and human calcified tendons, and overexpressing miR-337-3p in patellar tendons of rat tendinopathy model displayed a robust therapeutic efficiency. Mechanistically, we found that the proinflammatory cytokine interleukin-1β was the upstream factor of miR-337-3p that bridges the mechanical loading with its downregulation. Furthermore, the target genes of miR-337-3p, NADPH oxidase 4, and insulin receptor substrate 1, activated chondro-osteogenic differentiation of TDSCs through JNK and ERK signaling, respectively. Thus, these findings not only provide novel insight into the molecular mechanisms underlying ectopic ossification in tendinopathy but also highlight the significance of miR-337-3p as a putative therapeutic target for clinic treatment of tendinopathy.
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Affiliation(s)
- Yiyun Geng
- Department of Orthopedic Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China.,Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Second People's Hospital (The First Hospital Affiliated to Shenzhen University), Shenzhen 518035, China.,The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiaoying Zhao
- Department of Orthopedic Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
| | - Jiajia Xu
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xudong Zhang
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Guoli Hu
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Sai-Chuen Fu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Kerong Dai
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiaodong Chen
- Department of Orthopedic Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
| | - Yung Shu-Huang Patrick
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiaoling Zhang
- Department of Orthopedic Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China.,The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
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24
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Li Y, Wu T, Liu S. Identification and Distinction of Tenocytes and Tendon-Derived Stem Cells. Front Cell Dev Biol 2021; 9:629515. [PMID: 33937230 PMCID: PMC8085586 DOI: 10.3389/fcell.2021.629515] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 03/29/2021] [Indexed: 01/01/2023] Open
Abstract
Restoring the normal structure and function of injured tendons is one of the biggest challenges in orthopedics and sports medicine department. The discovery of tendon-derived stem cells (TDSCs) provides a novel perspective to treat tendon injuries, which is expected to be an ideal seed cell to promote tendon repair and regeneration. Because of the lack of specific markers, the identification of tenocytes and TDSCs has not been conclusive in the in vitro study of tendons. In addition, the morphology of tendon derived cells is similar, and the comparison and identification of tenocytes and TDSCs are insufficient, which causes some obstacles to the in vitro study of tendon. In this review, the characteristics of tenocytes and TDSCs are summarized and compared based on some existing research results (mainly in terms of biomarkers), and a potential marker selection for identification is suggested. It is of profound significance to further explore the mechanism of biomarkers in vivo and to find more specific markers.
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Affiliation(s)
- Yuange Li
- Department of Orthopaedics, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Tianyi Wu
- Department of Orthopaedics, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shen Liu
- Department of Orthopaedics, Shanghai Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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25
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Wei B, Lu J. Characterization of Tendon-Derived Stem Cells and Rescue Tendon Injury. Stem Cell Rev Rep 2021; 17:1534-1551. [PMID: 33651334 DOI: 10.1007/s12015-021-10143-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2021] [Indexed: 12/12/2022]
Abstract
The natural healing ability of tendon is limited, and it cannot restore the native structure and function of tendon injuries. Tendon-derived stem cells (TDSCs) are a new type of pluripotent stem cells with multi-directional differentiation potential and are expected to become a promising cell-seed for the treatment of tendon injuries in the future. In this review, we outline the latest advances in the culture and identification of TDSCs. In addition, the influencing factors on the differentiation of TDSCs are discussed. Moreover, we aim to discuss recent studies to enhance TDSCs treatment of injured tendons. Finally, we identify the limitations of the current understanding of TDSCs biology, the main challenges of using their use, and potential therapeutic strategies to inform cell-based tendon repair.
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Affiliation(s)
- Bing Wei
- School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Jun Lu
- Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China.
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26
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Zhang J, Nie D, Williamson K, McDowell A, Hogan MV, Wang JHC. Moderate and intensive mechanical loading differentially modulate the phenotype of tendon stem/progenitor cells in vivo. PLoS One 2020; 15:e0242640. [PMID: 33373386 PMCID: PMC7771689 DOI: 10.1371/journal.pone.0242640] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 12/13/2020] [Indexed: 11/18/2022] Open
Abstract
To examine the differential mechanobiological responses of specific resident tendon cells, we developed an in vivo model of whole-body irradiation followed by injection of either tendon stem/progenitor cells (TSCs) expressing green fluorescent protein (GFP-TSCs) or mature tenocytes expressing GFP (GFP-TNCs) into the patellar tendons of wild type C57 mice. Injected mice were subjected to short term (3 weeks) treadmill running, specifically moderate treadmill running (MTR) and intensive treadmill running (ITR). In MTR mice, both GFP-TSC and GFP-TNC injected tendons maintained normal cell morphology with elevated expression of tendon related markers collagen I and tenomodulin. In ITR mice injected with GFP-TNCs, cells also maintained an elongated shape similar to the shape found in normal/untreated control mice, as well as elevated expression of tendon related markers. However, ITR mice injected with GFP-TSCs showed abnormal changes, such as cell morphology transitioning to a round shape, elevated chondrogenic differentiation, and increased gene expression of non-tenocyte related genes LPL, Runx-2, and SOX-9. Increased gene expression data was supported by immunostaining showing elevated expression of SOX-9, Runx-2, and PPARγ. This study provides evidence that while MTR maintains tendon homeostasis by promoting the differentiation of TSCs into TNCs, ITR causes the onset of tendinopathy development by inducing non-tenocyte differentiation of TSCs, which may eventually lead to the formation of non-tendinous tissues in tendon tissue after long term mechanical overloading conditions on the tendon.
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Affiliation(s)
- Jianying Zhang
- MechanoBiology Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Daibang Nie
- MechanoBiology Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States of America
- Department of Immunology, College of Basic Medicine, Chongqing Medical University, Chongqing, China
| | - Kelly Williamson
- MechanoBiology Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Arthur McDowell
- MechanoBiology Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States of America
- Howard University College of Medicine, Washington D.C., United States of America
| | - MaCalus V. Hogan
- MechanoBiology Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - James H-C. Wang
- MechanoBiology Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States of America
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States of America
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States of America
- * E-mail:
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27
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Migliorini F, Tingart M, Maffulli N. Progress with stem cell therapies for tendon tissue regeneration. Expert Opin Biol Ther 2020; 20:1373-1379. [DOI: 10.1080/14712598.2020.1786532] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedics, University Clinic Aachen, RWTH Aachen University Clinic, Aachen, Germany
| | - Markus Tingart
- Department of Orthopaedics, University Clinic Aachen, RWTH Aachen University Clinic, Aachen, Germany
| | - Nicola Maffulli
- Department of Medicine, Surgery and Dentistry, University of Salerno, Baronissi, Italy
- School of Pharmacy and Bioengineering, Keele University School of Medicine, Stoke on Trent, UK
- Queen Mary University of London, Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, London, UK
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28
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Wu YF, Chen C, Tang JB, Mao WF. Growth and Stem Cell Characteristics of Tendon-Derived Cells with Different Initial Seeding Densities: An In Vitro Study in Mouse Flexor Tendon Cells. Stem Cells Dev 2020; 29:1016-1025. [PMID: 32443957 DOI: 10.1089/scd.2020.0036] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Tendon stem/progenitor cells (TSPCs) are considered promising seed cells for tendon regeneration. Previous studies reported that a low seeding density favors TSPC growth, whereas a high seeding density favors tenocyte growth. We aimed to distinguish TSPCs from tenocytes by seeding tendon-derived cells at a density gradient. In this study, tendon-derived cells were isolated from flexor digitorum profundus tendons of mice and seeded at the initial densities of 50, 500, 5,000, and 50,000/cm2. We found that distinct cell colonies were formed from cells with initial seeding densities of 50 and 500/cm2, but colonies were not discernible for cells seeded at 5,000 and 50,000/cm2. There was a positive correlation between cell proliferation rate and seeding density, but a negative correlation between cell senescence and seeding density. The cell proliferation rate decreased gradually during serial passages. All cells exhibited restricted differentiation potentials, and expressed stem cell markers and relatively high levels of tenogenic markers without notable differences among cells seeded at different densities. We concluded that a pure population of TSPCs could not be isolated from mouse digital flexor tendons through culturing cells at a density gradient. Cells seeded at low densities had very limited proliferative ability and did not show more prominent stem cell characteristics when compared with cells seeded at high densities.
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Affiliation(s)
- Ya Fang Wu
- Department of Hand Surgery, Hand Surgery Research Center, Affiliated Hospital of Nantong University, Nantong, China
| | - Chen Chen
- Department of Hand Surgery, Hand Surgery Research Center, Affiliated Hospital of Nantong University, Nantong, China
| | - Jin Bo Tang
- Department of Hand Surgery, Hand Surgery Research Center, Affiliated Hospital of Nantong University, Nantong, China
| | - Wei Feng Mao
- Department of Hand Surgery, Hand Surgery Research Center, Affiliated Hospital of Nantong University, Nantong, China.,Department of Anatomy, Medical School, Nantong University, Nantong, China
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29
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Kim SJ, Oh HW, Chang JW, Kim SJ. Recovery of Tendon Characteristics by Inhibition of Aberrant Differentiation of Tendon-Derived Stem Cells from Degenerative Tendinopathy. Int J Mol Sci 2020; 21:ijms21082687. [PMID: 32294907 PMCID: PMC7215446 DOI: 10.3390/ijms21082687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 11/16/2022] Open
Abstract
The inhibition of the aberrant differentiation of tendon-derived stem cells (TDSCs) is a major target for the regeneration of damaged tendon tissues, as tendinopathy can be caused by the aberrant differentiation of TDSCs. We investigated whether the possible aberrant differentiation of TDSCs can be prevented by using adequate inhibitors. TDSCs extracted from chemically induced tendinopathy and injury-with-overuse tendinopathy models were cultured with 18α-glycyrrhetinic acid (AGA) and T0070907 to block osteogenic differentiation and adipogenic differentiation, respectively. The optimal dose of AGA decreased the osteogenic-specific marker Runx2 (Runt-related transcription factor 2), and T0070907 blocked the adipogenic-specific marker peroxisome proliferator-activated receptor gamma (PPARγ) in mRNA levels. We also found that AGA induced tenogenic differentiation in mRNA levels. However, T0070907 did not affect the tenogenic differentiation and regenerative capacity of TDSCs. We expect that optimal doses of AGA and T0070907 can prevent tendinopathy by inhibiting osteogenic and adipogenic differentiation, respectively. In addition, AGA and T0070907 may play important roles in the treatment of tendinopathy.
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Affiliation(s)
- Sun Jeong Kim
- Department of Physical and Rehabilitation Medicine, Stem Cell & Regenerative Medicine Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea;
- R&D Center, ENCell Co. Ltd., Seoul 06072, Korea
| | - Hae Won Oh
- Division of Health Policy and Administration, School of Public Health, University of Illinois, Chicago, IL 60612, USA;
| | - Jong Wook Chang
- R&D Center, ENCell Co. Ltd., Seoul 06072, Korea
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul 06351, Korea
- Stem Cell & Regenerative Medicine Institute, Samsung Medical Center, Seoul 06351, Korea
- Correspondence: (J.W.C.); (S.J.K.); Tel.: +82-2-3410-6048 (J.W.C.); +82-2-576-0100 (S.J.K.)
| | - Sang Jun Kim
- Seoul Jun Research Center, Seoul Jun Rehabilitation Clinic, Seoul 06737, Korea
- Correspondence: (J.W.C.); (S.J.K.); Tel.: +82-2-3410-6048 (J.W.C.); +82-2-576-0100 (S.J.K.)
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30
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Rajpar I, Barrett JG. Multi-differentiation potential is necessary for optimal tenogenesis of tendon stem cells. Stem Cell Res Ther 2020; 11:152. [PMID: 32272975 PMCID: PMC7146987 DOI: 10.1186/s13287-020-01640-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 02/21/2020] [Accepted: 03/10/2020] [Indexed: 01/07/2023] Open
Abstract
Background Tendon injury is a significant clinical problem due to poor healing and a high reinjury rate; successful treatment is limited by our poor understanding of endogenous tendon stem cells. Recent evidence suggests that adult stem cells are phenotypically diverse, even when comparing stem cells isolated from the same tissue from the same individual, and may in fact exist on a spectrum of proliferation and differentiation capacities. Additionally, the relationships between and clinical relevance of this phenotypic variation are poorly understood. In particular, tenogenic capacity has not been studied in comparison to tenogenic differentiation and cell proliferation. Toward this end, we performed a comprehensive assessment of cell proliferation and differentiation capacity toward four connective tissue lineages (tendon, cartilage, bone, and adipose) using tendon stem cell lines derived from single cells released directly from tendon tissue to (1) evaluate the differences, if any, in tenogenic potential, and (2) identify the relationships between differentiation phenotypes and proliferation capacity. Methods Tendon stem cells were derived from the endotenon of superficial digital flexor tendon from 3 horses. The cell suspension from each horse was separately plated simultaneously (1) at moderate density to generate a heterogenous population of cells—parent tendon cell line—and (2) at low density to separate single cells from each other to allow isolation of colonies that derive from single mother cells—clonal tendon stem cell lines. Thirty clonal tendon stem cell lines—10 from each horse—and each parent tendon cell line were assessed for tenogenesis, tri-lineage differentiation, and cell proliferation. Differentiation was confirmed by lineage-specific cell staining and quantified by the relative gene expression of lineage-specific markers. Statistical significance was determined using analysis of variance and post hoc Tukey’s tests. Results Three distinct differentiation phenotypes—differentiation potency toward all 4 tissue lineages and two tri-lineage differentiation potencies—were identified in tendon clonal stem cell lines. These phenotypes were differentiation toward (1) tendon, cartilage, bone, and adipose (TCOA); (2) tendon, cartilage, and bone (TCO); and (3) tendon, cartilage, and adipose (TCA). Further, clonal cell lines that differentiated toward all four lineages had the highest expression of scleraxis and mohawk upon tenogenesis. Moreover, cell proliferation was significantly different between phenotypic groups, as evidenced by increased numbers of cumulative cell population doublings in clonal cell lines that did not differentiate toward adipose. Conclusions Our study provides evidence of the heterogenous character of adult stem cells and identifies key differences in tendon stem cell differentiation and proliferative potentials from the same individual and from the same tendon. Isolation of tendon stem cell lines with the capacity to differentiate into all four connective tissue lineages may yield improved therapeutic benefits in clinical models of repair and promote a native, regenerative phenotype in engineered tendons. Future studies may be targeted to understanding the functional contributions of each tendon stem cell phenotype in vivo and identifying additional cell phenotypes.
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Affiliation(s)
- Ibtesam Rajpar
- Department of Large Animal Clinical Sciences, Marion duPont Scott Equine Medical Center, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Leesburg, 17690 Old Waterford Road, Leesburg, VA, 20176, USA
| | - Jennifer G Barrett
- Department of Large Animal Clinical Sciences, Marion duPont Scott Equine Medical Center, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Leesburg, 17690 Old Waterford Road, Leesburg, VA, 20176, USA.
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31
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Lui PPY, Wong CM. Biology of Tendon Stem Cells and Tendon in Aging. Front Genet 2020; 10:1338. [PMID: 32010194 PMCID: PMC6976534 DOI: 10.3389/fgene.2019.01338] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 12/09/2019] [Indexed: 12/22/2022] Open
Abstract
Both tendon injuries and tendinopathies, particularly rotator cuff tears, increase with tendon aging. Tendon stem cells play important roles in promoting tendon growth, maintenance, and repair. Aged tendons show a decline in regenerative potential coupled with a loss of stem cell function. Recent studies draw attention to aging primarily a disorder of stem cells. The micro-environment (“niche”) where stem cells resided in vivo provides signals that direct them to metabolize, self-renew, differentiate, or remain quiescent. These signals include receptors and secreted soluble factors for cell-cell communication, extracellular matrix, oxidative stress, and vascularity. Both intrinsic cellular deficits and aged niche, coupled with age-associated systemic changes of hormonal and metabolic signals can inhibit or alter the functions of tendon stem cells, resulting in reduced fitness of these primitive cells and hence more frequent injuries and poor outcomes of tendon repair. This review aims to summarize the biological changes of aged tendons. The biological changes of tendon stem cells in aging are reviewed after a systematic search of the PubMed. Relevant factors of stem cell aging including cell-intrinsic factors, changes of microenvironment, and age-associated systemic changes of hormonal and metabolic signals are examined, with findings related to tendon stem cells highlighted when literature is available. Future research directions on the aging mechanisms of tendon stem cells are discussed. Better understanding of the molecular mechanisms underlying the functional decline of aged tendon stem cells would provide insight for the rational design of rejuvenating therapies.
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Affiliation(s)
| | - Chi Ming Wong
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, Hong Kong
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32
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Tey SR, Robertson S, Lynch E, Suzuki M. Coding Cell Identity of Human Skeletal Muscle Progenitor Cells Using Cell Surface Markers: Current Status and Remaining Challenges for Characterization and Isolation. Front Cell Dev Biol 2019; 7:284. [PMID: 31828070 PMCID: PMC6890603 DOI: 10.3389/fcell.2019.00284] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 11/01/2019] [Indexed: 12/12/2022] Open
Abstract
Skeletal muscle progenitor cells (SMPCs), also called myogenic progenitors, have been studied extensively in recent years because of their promising therapeutic potential to preserve and recover skeletal muscle mass and function in patients with cachexia, sarcopenia, and neuromuscular diseases. SMPCs can be utilized to investigate the mechanisms of natural and pathological myogenesis via in vitro modeling and in vivo experimentation. While various types of SMPCs are currently available from several sources, human pluripotent stem cells (PSCs) offer an efficient and cost-effective method to derive SMPCs. As human PSC-derived cells often display varying heterogeneity in cell types, cell enrichment using cell surface markers remains a critical step in current procedures to establish a pure population of SMPCs. Here we summarize the cell surface markers currently being used to detect human SMPCs, describing their potential application for characterizing, identifying and isolating human PSC-derived SMPCs. To date, several positive and negative markers have been used to enrich human SMPCs from differentiated PSCs by cell sorting. A careful analysis of current findings can broaden our understanding and reveal potential uses for these surface markers with SMPCs.
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Affiliation(s)
- Sin-Ruow Tey
- Department of Comparative Biosciences, University of Wisconsin, Madison, WI, United States
| | - Samantha Robertson
- Department of Comparative Biosciences, University of Wisconsin, Madison, WI, United States
| | - Eileen Lynch
- Department of Comparative Biosciences, University of Wisconsin, Madison, WI, United States
| | - Masatoshi Suzuki
- Department of Comparative Biosciences, University of Wisconsin, Madison, WI, United States.,The Stem Cell and Regenerative Medicine Center, University of Wisconsin, Madison, WI, United States
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33
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CTGF Attenuates Tendon-Derived Stem/Progenitor Cell Aging. Stem Cells Int 2019; 2019:6257537. [PMID: 31827530 PMCID: PMC6881574 DOI: 10.1155/2019/6257537] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 09/14/2019] [Accepted: 09/28/2019] [Indexed: 01/18/2023] Open
Abstract
Aged tendon-derived stem/progenitor cells (TSPCs) lead to age-related tendon disorders and impair tendon healing. However, the underlying molecular mechanisms of TSPC aging remain largely unknown. Here, we investigated the role of connective tissue growth factor (CTGF) in TSPC aging. CTGF protein and mRNA levels were markedly decreased in the aged TSPCs. Moreover, recombinant CTGF attenuates TSPC aging and restores the age-associated reduction of self-renewal and differentiation of TSPCs. In addition, cell cycle distribution of aged TSPCs was arrested in the G1/S phase while recombinant CTGF treatment promoted G1/S transition. Recombinant CTGF also rescued decreased levels of cyclin D1 and CDK4 and reduced p27kip1 expression in aged TSPCs. Our results demonstrated that CTGF plays a vital role in TSPC aging and might be a potential target for molecular therapy of age-related tendon disorders.
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34
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Lu CC, Zhang T, Reisdorf RL, Amadio PC, An KN, Moran SL, Gingery A, Zhao C. Biological analysis of flexor tendon repair-failure stump tissue: A potential recycling of tissue for tendon regeneration. Bone Joint Res 2019; 8:232-245. [PMID: 31346451 PMCID: PMC6609868 DOI: 10.1302/2046-3758.86.bjr-2018-0239.r1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Objectives Re-rupture is common after primary flexor tendon repair. Characterization of the biological changes in the ruptured tendon stumps would be helpful, not only to understand the biological responses to the failed tendon repair, but also to investigate if the tendon stumps could be used as a recycling biomaterial for tendon regeneration in the secondary grafting surgery. Methods A canine flexor tendon repair and failure model was used. Following six weeks of repair failure, the tendon stumps were analyzed and characterized as isolated tendon-derived stem cells (TDSCs). Results Failed-repair stump tissue showed cellular accumulation of crumpled and disoriented collagen fibres. Compared with normal tendon, stump tissue had significantly higher gene expression of collagens I and III, matrix metalloproteinases (MMPs), vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), and insulin-like growth factor (IGF). The stump TDSCs presented both mesenchymal stem and haematopoietic cell markers with significantly increased expression of CD34, CD44, and CD90 markers. Stump TDSCs exhibited similar migration but a lower proliferation rate, as well as similar osteogenic differentiation but a lower chondrogenic/adipogenic differentiation capability, compared with normal TDSCs. Stump TDSCs also showed increasing levels of SRY-box 2 (Sox2), octamer-binding transcription factor 4 (Oct4), tenomodulin (TNMD), and scleraxis (Scx) protein and gene expression. Conclusion We found that a failed repair stump had increased cellularity that preserved both mesenchymal and haematopoietic stem cell characteristics, with higher collagen synthesis, MMP, and growth factor gene expression. This study provides evidence that tendon stump tissue has regenerative potential. Cite this article: C-C. Lu, T. Zhang, R. L. Reisdorf, P. C. Amadio, K-N. An, S. L. Moran, A. Gingery, C. Zhao. Biological analysis of flexor tendon repair-failure stump tissue: A potential recycling of tissue for tendon regeneration. Bone Joint Res 2019;8:232–245. DOI: 10.1302/2046-3758.86.BJR-2018-0239.R1.
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Affiliation(s)
- C-C Lu
- Biomechanics & Tendon and Soft Tissue Biology Laboratories, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota, USA; Orthopaedic Department, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Kaohsiung Medical University, Kaohsiung, Taiwan
| | - T Zhang
- Biomechanics & Tendon and Soft Tissue Biology Laboratories, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota, USA
| | - R L Reisdorf
- Biomechanics & Tendon and Soft Tissue Biology Laboratories, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota, USA
| | - P C Amadio
- Biomechanics & Tendon and Soft Tissue Biology Laboratories, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota, USA
| | - K-N An
- Biomechanics & Tendon and Soft Tissue Biology Laboratories, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota, USA
| | - S L Moran
- Biomechanics & Tendon and Soft Tissue Biology Laboratories, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota, USA
| | - A Gingery
- Biomechanics & Tendon and Soft Tissue Biology Laboratories, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota, USA
| | - C Zhao
- Biomechanics & Tendon and Soft Tissue Biology Laboratories, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota, USA
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35
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Costa-Almeida R, Calejo I, Gomes ME. Mesenchymal Stem Cells Empowering Tendon Regenerative Therapies. Int J Mol Sci 2019; 20:E3002. [PMID: 31248196 PMCID: PMC6627139 DOI: 10.3390/ijms20123002] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/11/2019] [Accepted: 06/18/2019] [Indexed: 12/19/2022] Open
Abstract
Tendon tissues have limited healing capacity. The incidence of tendon injuries and the unsatisfactory functional outcomes of tendon repair are driving the search for alternative therapeutic approaches envisioning tendon regeneration. Cellular therapies aim at delivering adequate, regeneration-competent cell types to the injured tendon and toward ultimately promoting its reconstruction and recovery of functionality. Mesenchymal stem cells (MSCs) either obtained from tendons or from non-tendon sources, like bone marrow (BM-MSCs) or adipose tissue (ASCs), have been receiving increasing attention over the years toward enhancing tendon healing. Evidences from in vitro and in vivo studies suggest MSCs can contribute to accelerate and improve the quality of tendon healing. Nonetheless, the exact mechanisms underlying these repair events are yet to be fully elucidated. This review provides an overview of the main challenges in the field of cell-based regenerative therapies, discussing the role of MSCs in boosting tendon regeneration, particularly through their capacity to enhance the tenogenic properties of tendon resident cells.
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Affiliation(s)
- Raquel Costa-Almeida
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, 4805-017 Barco, Guimarães, Portugal.
| | - Isabel Calejo
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, 4805-017 Barco, Guimarães, Portugal.
| | - Manuela E Gomes
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, 4805-017 Barco, Guimarães, Portugal.
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Avepark, 4805-017 Barco, Guimarães, Portugal.
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McBeath R, Edwards RW, O’Hara BJ, Maltenfort MG, Parks SM, Steplewski A, Osterman AL, Shapiro IM. Tendinosis develops from age- and oxygen tension-dependent modulation of Rac1 activity. Aging Cell 2019; 18:e12934. [PMID: 30938056 PMCID: PMC6516173 DOI: 10.1111/acel.12934] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 01/16/2019] [Accepted: 02/07/2019] [Indexed: 12/20/2022] Open
Abstract
Age‐related tendon degeneration (tendinosis) is characterized by a phenotypic change in which tenocytes display characteristics of fibrochondrocytes and mineralized fibrochondrocytes. As tendon degeneration has been noted in vivo in areas of decreased tendon vascularity, we hypothesized that hypoxia is responsible for the development of the tendinosis phenotype, and that these effects are more pronounced in aged tenocytes. Hypoxic (1% O2) culture of aged, tendinotic, and young human tenocytes resulted in a mineralized fibrochondrocyte phenotype in aged tenocytes, and a fibrochondrocyte phenotype in young and tendinotic tenocytes. Investigation of the molecular mechanism responsible for this phenotype change revealed that the fibrochondrocyte phenotype in aged tenocytes occurs with decreased Rac1 activity in response to hypoxia. In young hypoxic tenocytes, however, the fibrochondrocyte phenotype occurs with concomitant decreased Rac1 activity coupled with increased RhoA activity. Using pharmacologic and adenoviral manipulation, we confirmed that these hypoxic effects on the tenocyte phenotype are linked directly to the activity of RhoA/Rac1 GTPase in in vitro human cell culture and tendon explants. These results demonstrate that hypoxia drives tenocyte phenotypic changes, and provide a molecular insight into the development of human tendinosis that occurs with aging.
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Affiliation(s)
- Rowena McBeath
- Department of Orthopaedic SurgeryThomas Jefferson UniversityPhiladelphiaPennsylvania
- Division of Orthopaedic Research, Department of Orthopaedic SurgeryThomas Jefferson UniversityPhiladelphiaPennsylvania
- Philadelphia Hand to Shoulder CenterPhiladelphiaPennsylvania
| | - Richard W. Edwards
- Division of Orthopaedic Research, Department of Orthopaedic SurgeryThomas Jefferson UniversityPhiladelphiaPennsylvania
| | - Brian J. O’Hara
- Department of Pathology, Anatomy and Cell BiologyThomas Jefferson University HospitalPhiladelphiaPennsylvania
| | - Mitchell G. Maltenfort
- The Applied Clinical Research Center, Department of Biomedical and Health InformaticsChildren's Hospital of PhiladelphiaPhiladelphiaPennsylvania
| | - Susan M. Parks
- Division of Geriatric Medicine & Palliative Care, Department of Family & Community MedicineThomas Jefferson UniversityPhiladelphiaPennsylvania
| | - Andrzej Steplewski
- Division of Orthopaedic Research, Department of Orthopaedic SurgeryThomas Jefferson UniversityPhiladelphiaPennsylvania
| | - A. Lee Osterman
- Department of Orthopaedic SurgeryThomas Jefferson UniversityPhiladelphiaPennsylvania
- Philadelphia Hand to Shoulder CenterPhiladelphiaPennsylvania
| | - Irving M. Shapiro
- Division of Orthopaedic Research, Department of Orthopaedic SurgeryThomas Jefferson UniversityPhiladelphiaPennsylvania
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Mienaltowski MJ, Cánovas A, Fates VA, Hampton AR, Pechanec MY, Islas-Trejo A, Medrano JF. Transcriptome profiles of isolated murine Achilles tendon proper- and peritenon-derived progenitor cells. J Orthop Res 2019; 37:1409-1418. [PMID: 29926971 DOI: 10.1002/jor.24076] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 06/18/2018] [Indexed: 02/04/2023]
Abstract
Progenitor cells of the tendon proper and peritenon have unique properties that could impact their utilization in tendon repair strategies. While a few markers have been found to aid in distinguishing progenitors cells from each region, there is great value in identifying more markers. In this study, we hypothesized that RNAseq could be used to improve our understanding of those markers that define these cell types. Transcriptome profiles were generated for pools of mouse Achilles tendon progenitor cells from both regions and catalogues of potential markers were generated. Moreover, common (e.g., glycoprotein, signaling, and proteinaceous extracellular matrix) and unique (e.g., cartilage development versus angiogenesis and muscle contraction) biological processes and molecular functions were described for progenitors from each region. Real-time quantitative PCR of a subset of genes was used to gain insight into the heterogeneity amongst individual progenitor colonies from each region. Markers like Scx, Mkx, Thbs4, and Wnt10a were consistently able to distinguish tendon proper progenitors from peritenon progenitors; expression variability for other genes suggested greater cell type complexity for potential peritenon progenitor markers. This is the first effort to define Achilles tendon progenitor markers by region. Further efforts to investigate the value of these cataloged markers are required by screening more individual colonies of progenitors for more markers. Clinical Significance: Findings from this study advance efforts in the discernment of cell type specific markers for tendon proper and peritenon progenitor cells; insight into marker sets could improve tracking and sorting strategies for these cells for future therapeutic strategies. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:1409-1418, 2019.
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Affiliation(s)
- Michael J Mienaltowski
- Department of Animal Science, University of California Davis, 2251 Meyer Hall, One Shields Ave, Davis, California, 95616
| | - Angela Cánovas
- Department of Animal Science, University of California Davis, 2251 Meyer Hall, One Shields Ave, Davis, California, 95616.,Department of Animal Biosciences, University of Guelph, Ontario, Canada
| | - Valerie A Fates
- Department of Animal Science, University of California Davis, 2251 Meyer Hall, One Shields Ave, Davis, California, 95616
| | - Angela R Hampton
- Department of Animal Science, University of California Davis, 2251 Meyer Hall, One Shields Ave, Davis, California, 95616
| | - Monica Y Pechanec
- Department of Animal Science, University of California Davis, 2251 Meyer Hall, One Shields Ave, Davis, California, 95616
| | - Alma Islas-Trejo
- Department of Animal Science, University of California Davis, 2251 Meyer Hall, One Shields Ave, Davis, California, 95616
| | - Juan F Medrano
- Department of Animal Science, University of California Davis, 2251 Meyer Hall, One Shields Ave, Davis, California, 95616
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Calejo I, Costa-Almeida R, Gomes ME. Cellular Complexity at the Interface: Challenges in Enthesis Tissue Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1144:71-90. [PMID: 30632116 DOI: 10.1007/5584_2018_307] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The complex heterogeneous cellular environment found in tendon-to-bone interface makes this structure a challenge for interface tissue engineering. Orthopedic surgeons still face some problems associated with the formation of fibrotic tissue or re-tear occurring after surgical re-attachment of tendons to the bony insertion or the application of grafts. Unfortunately, an understanding of the cellular component of enthesis lags far behind of other well-known musculoskeletal interfaces, which blocks the development of new treatment options for the healing and regeneration of this multifaceted junction. In this chapter, the main characteristics of tendon and bone cell populations are introduced, followed by a brief description of the interfacial cellular niche, highlighting molecular mechanisms governing tendon-to-bone attachment and mineralization. Finally, we describe and critically assess some challenges faced concerning the use of cell-based strategies in tendon-to-bone healing and regeneration.
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Affiliation(s)
- Isabel Calejo
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Raquel Costa-Almeida
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Manuela E Gomes
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal. .,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal. .,The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal.
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Xu H, Liu F. Downregulation of FOXP1 correlates with tendon stem/progenitor cells aging. Biochem Biophys Res Commun 2018; 504:96-102. [PMID: 30170733 DOI: 10.1016/j.bbrc.2018.08.136] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 08/22/2018] [Indexed: 12/18/2022]
Abstract
Aging is known as a major risk factor for tendon disorders whereas the molecular mechanisms of age-related tendon disorders still remains unclear. Since tendon-derived stem/progenitor cells (TSPCs) play a vital role in tendon maintenance and healing, in this study we aimed to investigate the role of Forkhead box P1 (FOXP1) in aged TSPCs, we found that FOXP1 mRNA and protein levels were markedly decreased in the aged TSPCs. Moreover, overexpression of FOXP1 attenuates TSPCs aging, as confirmed by decreased of senescence-associated β-gal staining, as well as the senescence marker, p16INK4A. Conversely, FOXP1 depletion by siRNA promoted senescence in young TSPCs. Meanwhile, FOXP1 overexpression also restores the age-associated reduction of self-renewal, migration and differentiation of TSPCs. In addition, FOXP1 overexpression rescued decreased levels of E2F1, pRb and cyclin D1 in aged TSPCs, which suggested that FOXP1 regulates TSPCs aging through cellular senescence. These results indicate that FOXP1 plays a crucial role in TSPCs aging.
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Affiliation(s)
- Hua Xu
- First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China; Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, People's Republic of China
| | - Fan Liu
- First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China; Department of Orthopaedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, People's Republic of China.
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Schneider M, Angele P, Järvinen TA, Docheva D. Rescue plan for Achilles: Therapeutics steering the fate and functions of stem cells in tendon wound healing. Adv Drug Deliv Rev 2018; 129:352-375. [PMID: 29278683 DOI: 10.1016/j.addr.2017.12.016] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 12/01/2017] [Accepted: 12/22/2017] [Indexed: 02/07/2023]
Abstract
Due to the increasing age of our society and a rise in engagement of young people in extreme and/or competitive sports, both tendinopathies and tendon ruptures present a clinical and financial challenge. Tendon has limited natural healing capacity and often responds poorly to treatments, hence it requires prolonged rehabilitation in most cases. Till today, none of the therapeutic options has provided successful long-term solutions, meaning that repaired tendons do not recover their complete strength and functionality. Our understanding of tendon biology and healing increases only slowly and the development of new treatment options is insufficient. In this review, following discussion on tendon structure, healing and the clinical relevance of tendon injury, we aim to elucidate the role of stem cells in tendon healing and discuss new possibilities to enhance stem cell treatment of injured tendon. To date, studies mainly apply stem cells, often in combination with scaffolds or growth factors, to surgically created tendon defects. Deeper understanding of how stem cells and vasculature in the healing tendon react to growth factors, common drugs used to treat injured tendons and promising cellular boosters could help to develop new and more efficient ways to manage tendon injuries.
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Čamernik K, Barlič A, Drobnič M, Marc J, Jeras M, Zupan J. Mesenchymal Stem Cells in the Musculoskeletal System: From Animal Models to Human Tissue Regeneration? Stem Cell Rev Rep 2018; 14:346-369. [DOI: 10.1007/s12015-018-9800-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Kim SJ, Song DH, Kim SJ. Characteristics of tendon derived stem cells according to different factors to induce the tendinopathy. J Cell Physiol 2018; 233:6196-6206. [PMID: 29341108 DOI: 10.1002/jcp.26475] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 01/05/2018] [Indexed: 12/29/2022]
Abstract
Tendon derived stem cells (TDSCs) have been used as a therapeutic agent and as a healing marker. However, there has been no study about the characteristics of TDSCs extracted from tendinopathic tendon tissues. The aim of this study was to find the different characteristics of TDSCs according to the factors to induce the tendinopathy. Five- and fifteen-week old Sprague Dawley rats were used for this study and chemically-induced and injury-induced tendinopathy models were made depending on the age of the animal for different types of tendinopathy. TDSCs from chemically-induced tendinopathy showed markedly low proliferation compared to those from age-matched normal control and injury-induced tendinopathy. In addition, TDSCs from chemically-induced tendinopathy progressed to osteogenesis under an osteogenic differentiation environment more than those from other groups. In contrast, TDSCs from injury-induced tendinopathy showed markedly high proliferation and high expression of type III collagen and α-SMA compared to other groups. Adipogenic potentials in TDSCs from injury-induced tendinopathy were also higher. These different characteristics might be helpful in the development new therapeutic agents for tendon regeneration according to different factors to induce the tendinopathy.
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Affiliation(s)
- Sun Jeog Kim
- Department of Physical and Rehabilitation Medicine, Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Da-Hyun Song
- Department of Physical and Rehabilitation Medicine, Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Sang Jun Kim
- Department of Physical and Rehabilitation Medicine, Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Kim JO, Lee JH, Kim KS, Ji JH, Koh SJ, Lee JH. Rotator cuff bridging repair using acellular dermal matrix in large to massive rotator cuff tears: histologic and clinical analysis. J Shoulder Elbow Surg 2017; 26:1897-1907. [PMID: 28705694 DOI: 10.1016/j.jse.2017.04.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 03/28/2017] [Accepted: 04/16/2017] [Indexed: 02/01/2023]
Abstract
BACKGROUND This study investigated the efficacy of the bridging repair using an acellular dermal matrix (ADM) and an ADM with stem cells in rabbits. Also investigated were clinical outcomes of ADM bridging repair for large to massive rotator cuff tears. MATERIALS AND METHODS ADM, with and without stem cells, was used to cover a 5- × 5-mm-sized cuff defect in 17 rabbits, and biomechanical, histologic, and immunohistochemical analyses were conducted. Also evaluated were 24 patients with large to massive rotator cuff tears after ADM bridging repair. RESULTS In the biomechanical test, the normal rotator cuff, cuff with ADM plus stem cells, and cuff with ADM in the rabbit model showed a maximum load (N) of 287.3, 217.5, and 170.3 and ultimate tensile strength (N/mm2) of 11.1, 8.0, and 5.2, respectively. Histologically, the cuff tendons with the ADM or ADM plus stem cells showed characteristically mature tendons as time passed. In the clinical study, the mean American Shoulder and Elbow Surgeons score improved from preoperative 50 to postoperative 83, the University of California Los Angeles Shoulder Rating Scale from 17 to 30, and the Simple Shoulder Test from 4 to 8, respectively. No further fatty deteriorations or muscle atrophy were observed on follow-up magnetic resonance imaging. A retear was found in 5 of 24 patients (21%). CONCLUSIONS Bridging repair with ADM or stem cells in the rabbit model showed cellular infiltration into the graft and some evidence of neotendon formation. Clinically, ADM repair was a safe alternative that did not show any further fatty deterioration nor muscle atrophy in large to massive rotator cuff tears.
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Affiliation(s)
- Jong Ok Kim
- Department of Pathology, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Jong-Ho Lee
- Department of Thoracic Surgery, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Kwang-Sup Kim
- Department of Orthopedic Surgery, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Jong-Hun Ji
- Department of Orthopedic Surgery, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Republic of Korea.
| | - Sung-Jun Koh
- Department of Orthopedic Surgery, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Jae-Ho Lee
- Department of Orthopedic Surgery, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Republic of Korea
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Abstract
Telocytes (TCs) are interstitial cells found in stroma of many organs, including the skin dermis. Ultrastructurally, normal skin TCs recapitulates all the previously documented features in interstitum of other organs. Their (ultra)structural hallmark is the presence of particular shaped cellular prolongations (termed telopodes), along other features as cellular organelles representation and their distribution within cell body and its prolongations. Transmission electron microscopy (TEM) or high magnification light microscopy indicated that the particular shape of telopodes alternate characteristically thin segments (termed podomeres) and dilated segments (called podoms). A new and powerful technique, focused ion beam scanning electron microscopy (FIB-SEM), indicated that, ultrastructurally, telopodes could be either irregular ribbon-like structures, or uneven tubular-like structures. TEM images shown that podoms consists mitochondria, elements of endoplasmic reticulum and caveolae. Immunohisochemical studies on skin TCs revealed their positive expression for CD34 and PDGFRα, but for vimentin and c-kit, also. In normal dermis, TCs are involved in junctions, either homocellular (TCs-TCs), or heterocellular (TCs - other type of cells). The junctional attribute of TCs underlies their ability of forming a 3D network within dermis. Beyond the physical interactions, the connections between TCs and other cells could be also chemical, by paracrine secretion via shed vesicles as ultrastructural studies demonstrated. In normal dermis, TCs were found distributed in particular spatial relationships with other interstitial structures and/or cells: vascular structures, nerves, skin adnexa, stem cells and immune reactive cells.To date, the study of TCs was approached into two pathologic conditions: systemic sclerosis and psoriasis. In both diseases, the normal ultrastructure of TCs and also their distribution were shown to be altered. Moreover, the pattern of TCs ultrastructural changes differs in systemic sclerosis (cytoplasmic vacuolization, swollen mitochondria, lipofuscin bodies) from those appeared in psoriasis, characterized by important dystrophic changes (telopodes fragmentation, cytoplasmic disintegration, apoptotic nuclei, nuclear extrusions). Furthermore, in psoriasis, the lesional remission is (ultra)structurally displaying a recovery of dermal TCs at values similar to normal.Considering TCs ultrastructural features, their connections and spatiality in normal dermis and also their pathologic changes, TCs are credited with roles in skin homeostasis and/or pathogeny of dermatological disorders. In our opinion, further researches should be focused on identifying a specific marker for TCs and also on comprehending the pattern of their response in different dermatoses.
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45
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Kim SJ, Song DH, Park JW, Park S, Kim SJ. Effect of Bone Marrow Aspirate Concentrate-Platelet-Rich Plasma on Tendon-Derived Stem Cells and Rotator Cuff Tendon Tear. Cell Transplant 2017; 26:867-878. [PMID: 28105983 PMCID: PMC5657720 DOI: 10.3727/096368917x694705] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Accepted: 02/01/2017] [Indexed: 02/07/2023] Open
Abstract
Bone marrow aspirate concentrates (BMACs) and platelet-rich plasma (PRP) are good sources to control the differentiation of tendon-derived stem cells (TDSCs), but there has been no study about the effect of the BMAC-PRP complex on TDSCs and tendinopathy. The aim of this study was to investigate the effect of BMAC-PRP on the TDSCs and to find the therapeutic effect of BMAC-PRP on the rotator cuff tendon tear. The chondrogenic and osteogenic potential of TDSCs decreased, but the adipogenic potential of TDSCs revealed no significant difference when they were cocultured with BMAC-PRP. Cell proliferation was significantly greater in TDSCs cocultured with BMAC-PRP than in TDSCs. The degree of wound closure (percentage) was different between TDSCs and TDSCs with BMAC-PRP. There was no significant difference in expression of collagen type I and type III in immunocytochemical staining in the presence of BMAC-PRP. Initial visual analog scale (VAS) score was 5.8 ± 1.9, which changed to 5.0 ± 2.3 at 3 weeks and 2.8 ± 2.3 at 3 months after the BMAC-PRP injection (p < 0.01). The American Shoulder Elbow Surgeon score changed from 39.4 ± 13.0 at baseline to 52.9 ± 22.9 at 3 weeks and 71.8 ± 19.7 at 3 months after the injection (p < 0.01). The initial torn area of the rotator cuff tendon was 30.2 ± 24.5 mm2, and this area was reduced to 22.5 ± 18.9 mm2 at 3 months, but the change was not significant (p > 0.05). The data indicate that BMAC-PRP enhances the proliferation and migration of TDSCs and prevents the aberrant chondrogenic and osteogenic differentiation of TDSCs, which might provide a mechanistic basis for the therapeutic benefits of BMAC-PRP for rotator cuff tendon tear.
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Affiliation(s)
- Sun Jeong Kim
- Department of Physical and Rehabilitation Medicine, Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Da Hyun Song
- Department of Physical and Rehabilitation Medicine, Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jong Wook Park
- Department of Physical and Rehabilitation Medicine, Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Silvia Park
- Department of Internal Medicine, Division of Hemato-Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Sang Jun Kim
- Department of Physical and Rehabilitation Medicine, Stem Cell and Regenerative Medicine Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Xu SY, Li SF, Ni GX. Strenuous Treadmill Running Induces a Chondrocyte Phenotype in Rat Achilles Tendons. Med Sci Monit 2016; 22:3705-3712. [PMID: 27742920 PMCID: PMC5070615 DOI: 10.12659/msm.897726] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Although tendinopathy is common, its underlying pathogenesis is poorly understood. This study aimed to investigate the possible pathogenesis of tendinopathy. MATERIAL AND METHODS In this study, a total of 24 rats were randomly and evenly divided into a control (CON) group and a strenuous treadmill running (STR) group. Animals in the STR group were subjected to a 12-week treadmill running protocol. Subsequently, all Achilles tendons were harvested to perform histological observation or biochemical analyses. RESULTS Histologically, hypercellularity and round cells, as well as disorganized collagen fibrils, were presented in rat Achilles tendon sections from the STR group. Furthermore, our results showed that the expression of aggrecan, collagen type II (Col II), and Sex-Determining Region Y Box 9 (Sox 9) were markedly increased in the STR group compared with that in the CON group. Additionally, the mRNA expression of bone morphogenetic protein-2 (BMP-2) and biglycan was significantly up-regulated in the STR group in contrast to that in CON group. CONCLUSIONS These results suggest that a 12-week strenuous treadmill running regimen can induce chondrocyte phenotype in rat Achilles tendons through chondrogenic differentiation of tendon stem cells (TSCs) by BMP-2 signaling.
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Affiliation(s)
- Shao-Yong Xu
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Shu-Fen Li
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Guo-Xin Ni
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, P.R. China
- Department of Rehabilitation Medicine, First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, P.R. China
- Corresponding Author: Guo-Xin Ni, e-mail:
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47
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Leong DJ, Sun HB. Mesenchymal stem cells in tendon repair and regeneration: basic understanding and translational challenges. Ann N Y Acad Sci 2016; 1383:88-96. [DOI: 10.1111/nyas.13262] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/22/2016] [Accepted: 08/24/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Daniel J. Leong
- Departments of Orthopaedic Surgery and Radiation Oncology; Albert Einstein College of Medicine; Bronx New York
| | - Hui B. Sun
- Departments of Orthopaedic Surgery and Radiation Oncology; Albert Einstein College of Medicine; Bronx New York
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48
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Walden G, Liao X, Donell S, Raxworthy MJ, Riley GP, Saeed A. A Clinical, Biological, and Biomaterials Perspective into Tendon Injuries and Regeneration. TISSUE ENGINEERING PART B-REVIEWS 2016; 23:44-58. [PMID: 27596929 PMCID: PMC5312458 DOI: 10.1089/ten.teb.2016.0181] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Tendon injury is common and debilitating, and it is associated with long-term pain and ineffective healing. It is estimated to afflict 25% of the adult population and is often a career-ending disease in athletes and racehorses. Tendon injury is associated with high morbidity, pain, and long-term suffering for the patient. Due to the low cellularity and vascularity of tendon tissue, once damage has occurred, the repair process is slow and inefficient, resulting in mechanically, structurally, and functionally inferior tissue. Current treatment options focus on pain management, often being palliative and temporary and ending in reduced function. Most treatments available do not address the underlying cause of the disease and, as such, are often ineffective with variable results. The need for an advanced therapeutic that addresses the underlying pathology is evident. Tissue engineering and regenerative medicine is an emerging field that is aimed at stimulating the body's own repair system to produce de novo tissue through the use of factors such as cells, proteins, and genes that are delivered by a biomaterial scaffold. Successful tissue engineering strategies for tendon regeneration should be built on a foundation of understanding of the molecular and cellular composition of healthy compared with damaged tendon, and the inherent differences seen in the tissue after disease. This article presents a comprehensive clinical, biological, and biomaterials insight into tendon tissue engineering and regeneration toward more advanced therapeutics.
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Affiliation(s)
- Grace Walden
- 1 School of Pharmacy, University of East Anglia, Norwich, United Kingdom
| | - Xin Liao
- 1 School of Pharmacy, University of East Anglia, Norwich, United Kingdom
| | - Simon Donell
- 2 Norfolk and Norwich University Hospital, Norwich, United Kingdom .,3 Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | - Mike J Raxworthy
- 4 Neotherix Limited, York, United Kingdom .,5 University of Leeds, Leeds, United Kingdom
| | - Graham P Riley
- 6 School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
| | - Aram Saeed
- 1 School of Pharmacy, University of East Anglia, Norwich, United Kingdom
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49
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Durgam S, Schuster B, Cymerman A, Stewart A, Stewart M. Differential Adhesion Selection for Enrichment of Tendon-Derived Progenitor Cells During In Vitro Culture. Tissue Eng Part C Methods 2016; 22:801-8. [PMID: 27406327 DOI: 10.1089/ten.tec.2016.0152] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Preplating, a technique used to separate rapidly adherent fibroblasts from the less-adherent progenitor cells, has been used successfully to isolate skeletal muscle-derived stem cells. The objective of this study was to determine if preplating could also be applied to enrich tendon-derived progenitor cells (TDPCs) before monolayer expansion. Cell suspensions obtained by collagenase digestion of equine lateral digital extensor tendon were serially transferred into adherent plates every 12 h for 4 days. TDPC fractions obtained from initial (TPP0), third (TPP3), and seventh (TPP7) preplate were passaged twice and used for subsequent analyses. Growth/proliferation and basal tenogenic gene expression of the three TDPC fractions were largely similar. Preplating and subsequent monolayer expansion did not alter the immunophenotype (CD29(+), CD44(+), CD90(+), and CD45(-)) and trilineage differentiation capacity of TDPC fractions. Overall, TDPCs were robustly osteogenic, but exhibited comparatively weak adipogenic and chondrogenic capacities. These outcomes indicate that preplating does not enrich for tendon-derived progenitors during in vitro culture, and "whole tendon digest"-derived cells are as appropriate for cell-based therapies.
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Affiliation(s)
- Sushmitha Durgam
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois , Urbana, Illinois
| | - Brooke Schuster
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois , Urbana, Illinois
| | - Anna Cymerman
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois , Urbana, Illinois
| | - Allison Stewart
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois , Urbana, Illinois
| | - Matthew Stewart
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois , Urbana, Illinois
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Abbah SA, Thomas D, Browne S, O’Brien T, Pandit A, Zeugolis DI. Co-transfection of decorin and interleukin-10 modulates pro-fibrotic extracellular matrix gene expression in human tenocyte culture. Sci Rep 2016; 6:20922. [PMID: 26860065 PMCID: PMC4748261 DOI: 10.1038/srep20922] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 01/13/2016] [Indexed: 12/22/2022] Open
Abstract
Extracellular matrix synthesis and remodelling are driven by increased activity of transforming growth factor beta 1 (TGF-β1). In tendon tissue repair, increased activity of TGF-β1 leads to progressive fibrosis. Decorin (DCN) and interleukin 10 (IL-10) antagonise pathological collagen synthesis by exerting a neutralising effect via downregulation of TGF-β1. Herein, we report that the delivery of DCN and IL-10 transgenes from a collagen hydrogel system supresses the constitutive expression of TGF-β1 and a range of pro-fibrotic extracellular matrix genes.
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Affiliation(s)
- Sunny A. Abbah
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Centre for Research in Medical Devices (CÚRAM), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Dilip Thomas
- Centre for Research in Medical Devices (CÚRAM), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Regenerative Medicine Institute (REMEDI), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Shane Browne
- Centre for Research in Medical Devices (CÚRAM), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Timothy O’Brien
- Centre for Research in Medical Devices (CÚRAM), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Regenerative Medicine Institute (REMEDI), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Abhay Pandit
- Centre for Research in Medical Devices (CÚRAM), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Dimitrios I. Zeugolis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Centre for Research in Medical Devices (CÚRAM), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
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