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Co CM, Nguyen T, Vaish B, Izuagbe S, Borrelli J, Tang L. Biomolecule-releasing bioadhesive for glenoid labrum repair through induced host progenitor cell responses. J Orthop Res 2023; 41:1624-1636. [PMID: 36448179 PMCID: PMC10355087 DOI: 10.1002/jor.25494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 11/18/2022] [Accepted: 11/28/2022] [Indexed: 12/02/2022]
Abstract
Glenoid labral tears occur with repetitive dislocation events and are common injuries observed in shoulder arthroscopic procedures. Although surgery can restore shoulder anatomy, repair is associated with poor clinical outcomes, which may be attributed to the poor regenerative capability of glenoid labral fibrocartilage. Thus, this study was designed to assess whether in situ tissue regeneration via biomolecule-stimulated recruitment of progenitor cells is a viable approach for the regeneration of labral tears. We developed a click chemistry-based bioadhesive to improve labral repair and reduce local inflammatory responses due to trauma. Additionally, we previously identified the presence of progenitor cells in the human labrum, which can be recruited by platelet-derived growth factor (PDGF). Thus, we hypothesized that PDGF-releasing adhesives could induce the regenerative responses of progenitor cells at the injury site to improve labral healing. In a rat glenoid labral tear model, we evaluated the effect of PDGF-releasing adhesives on promoting progenitor cells to participate in labral tear healing. After 3 and 6 weeks, the labrum was histologically analyzed for inflammatory responses, progenitor cell recruitment, proliferation, and extracellular matrix (ECM) production (collagen and glycosaminoglycan). Our results showed that adhesives alone considerably reduced local inflammatory responses and labral tissue dissolution. PDGF-releasing adhesives significantly increased progenitor cell recruitment, proliferation, and ECM production. These results demonstrate that by accelerating autologous progenitor cell responses, PDGF-releasing adhesives represent a novel clinically relevant strategy to improve the healing of glenoid labral tears.
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Affiliation(s)
- Cynthia M Co
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Tam Nguyen
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Bhavya Vaish
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Samira Izuagbe
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Joseph Borrelli
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Liping Tang
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
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Effect of Hydroxyapatite Nanoparticles and Nitrogen Plasma Treatment on Osteoblast Biological Behaviors of 3D-Printed HDPE Scaffold for Bone Tissue Regeneration Applications. MATERIALS 2022; 15:ma15030827. [PMID: 35160769 PMCID: PMC8836530 DOI: 10.3390/ma15030827] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/07/2022] [Accepted: 01/19/2022] [Indexed: 02/01/2023]
Abstract
The need for the repair of bone defects has been increasing due to various causes of loss of skeletal tissue. High density polyethylenes (HDPE) have been used as bone substitutes due to their excellent biocompatibility and mechanical strength. In the present study, we investigated the preosteoblast cell proliferation and differentiation on the adding nano-hydroxyapatite (n-HAp) particles into HDPE scaffold and treating HDPE/n-HAp scaffolds with nitrogen (N2) plasma. The three-dimensional (3D) HDPE/n-HAp scaffolds were prepared by fused modeling deposition 3D printer. The HDPE/n-HAp was blended with 10 wt% of n-HAp particle. The scaffold surface was reactive ion etched with nitrogen plasma to improve the preosteoblast biological response in vitro. After N2 plasma treatment, surfaces characterizations were investigated using Fourier transform infrared spectroscopy, scanning electron microscopy, and atomic force microscopy. The proliferation and differentiation of preosteoblast (MC3T3-E1) cells were evaluated by MTT assay and alkaline phosphatase (ALP) activity. The incorporation of n-HAp particles and N2 plasma surface treatment showed the improvement of biological responses of MC3T3-E1 cells in the HDPE scaffolds.
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Chandrasekaran P, Kwok B, Han B, Adams SM, Wang C, Chery DR, Mauck RL, Dyment NA, Lu XL, Frank DB, Koyama E, Birk DE, Han L. Type V Collagen Regulates the Structure and Biomechanics of TMJ Condylar Cartilage: A Fibrous-Hyaline Hybrid. Matrix Biol 2021; 102:1-19. [PMID: 34314838 DOI: 10.1016/j.matbio.2021.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 05/26/2021] [Accepted: 07/15/2021] [Indexed: 12/20/2022]
Abstract
This study queried the role of type V collagen in the post-natal growth of temporomandibular joint (TMJ) condylar cartilage, a hybrid tissue with a fibrocartilage layer covering a secondary hyaline cartilage layer. Integrating outcomes from histology, immunofluorescence imaging, electron microscopy and atomic force microscopy-based nanomechanical tests, we elucidated the impact of type V collagen reduction on TMJ condylar cartilage growth in the type V collagen haploinsufficiency and inducible knockout mice. Reduction of type V collagen led to significantly thickened collagen fibrils, decreased tissue modulus, reduced cell density and aberrant cell clustering in both the fibrous and hyaline layers. Post-natal growth of condylar cartilage involves the chondrogenesis of progenitor cells residing in the fibrous layer, which gives rise to the secondary hyaline layer. Loss of type V collagen resulted in reduced proliferation of these cells, suggesting a possible role of type V collagen in mediating the progenitor cell niche. When the knockout of type V collagen was induced in post-weaning mice after the start of physiologic TMJ loading, the hyaline layer exhibited pronounced thinning, supporting an interplay between type V collagen and occlusal loading in condylar cartilage growth. The phenotype in hyaline layer can thus be attributed to the impact of type V collagen on the mechanically regulated progenitor cell activities. In contrast, knee cartilage does not contain the progenitor cell population at post-natal stages, and develops normal structure and biomechanical properties with the loss of type V collagen. Therefore, in the TMJ, in addition to its established role in regulating the assembly of collagen I fibrils, type V collagen also impacts the mechanoregulation of progenitor cell activities in the fibrous layer. We expect such knowledge to establish a foundation for understanding condylar cartilage matrix development and regeneration, and to yield new insights into the TMJ symptoms in patients with classic Ehlers-Danlos syndrome, a genetic disease due to autosomal mutation of type V collagen.
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Affiliation(s)
- Prashant Chandrasekaran
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, United States
| | - Bryan Kwok
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, United States
| | - Biao Han
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, United States
| | - Sheila M Adams
- Department of Molecular Pharmacology and Physiology, Morsani School of Medicine, University of South Florida, Tampa, FL 33612, United States
| | - Chao Wang
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, United States
| | - Daphney R Chery
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, United States
| | - Robert L Mauck
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States; Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz Veterans Administration Medical Center, Philadelphia, PA 19104, United States
| | - Nathaniel A Dyment
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - X Lucas Lu
- Department of Mechanical Engineering, University of Delaware, Newark, DE 19716, United States
| | - David B Frank
- Penn-CHOP Lung Biology Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States; Penn Cardiovascular Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States; Division of Pediatric Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, United States
| | - Eiki Koyama
- Translational Research Program in Pediatric Orthopaedics, Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, United States
| | - David E Birk
- Department of Molecular Pharmacology and Physiology, Morsani School of Medicine, University of South Florida, Tampa, FL 33612, United States
| | - Lin Han
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, United States.
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Hayes AJ, Melrose J. Glycosaminoglycan and Proteoglycan Biotherapeutics in Articular Cartilage Protection and Repair Strategies: Novel Approaches to Visco‐supplementation in Orthobiologics. ADVANCED THERAPEUTICS 2019. [DOI: 10.1002/adtp.201900034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Anthony J. Hayes
- Bioimaging Research HubCardiff School of BiosciencesCardiff University Cardiff CF10 3AX Wales UK
| | - James Melrose
- Graduate School of Biomedical EngineeringUNSW Sydney Sydney NSW 2052 Australia
- Raymond Purves Bone and Joint Research LaboratoriesKolling Institute of Medical ResearchRoyal North Shore Hospital and The Faculty of Medicine and HealthUniversity of Sydney St. Leonards NSW 2065 Australia
- Sydney Medical SchoolNorthernRoyal North Shore HospitalSydney University St. Leonards NSW 2065 Australia
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KOOK MS, ROH HS, KIM BH. Effect of oxygen plasma etching on pore size-controlled 3D polycaprolactone scaffolds for enhancing the early new bone formation in rabbit calvaria. Dent Mater J 2018; 37:599-610. [DOI: 10.4012/dmj.2017-318] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Min-Suk KOOK
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University
| | - Hee-Sang ROH
- Department of Dental Materials, School of Dentistry, Chosun University
| | - Byung-Hoon KIM
- Department of Dental Materials, School of Dentistry, Chosun University
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Taraballi F, Bauza G, McCulloch P, Harris J, Tasciotti E. Concise Review: Biomimetic Functionalization of Biomaterials to Stimulate the Endogenous Healing Process of Cartilage and Bone Tissue. Stem Cells Transl Med 2017; 6:2186-2196. [PMID: 29080279 PMCID: PMC5702525 DOI: 10.1002/sctm.17-0181] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/04/2017] [Indexed: 12/13/2022] Open
Abstract
Musculoskeletal reconstruction is an ongoing challenge for surgeons as it is required for one out of five patients undergoing surgery. In the past three decades, through the close collaboration between clinicians and basic scientists, several regenerative strategies have been proposed. These have emerged from interdisciplinary approaches that bridge tissue engineering with material science, physiology, and cell biology. The paradigm behind tissue engineering is to achieve regeneration and functional recovery using stem cells, bioactive molecules, or supporting materials. Although plenty of preclinical solutions for bone and cartilage have been presented, only a few platforms have been able to move from the bench to the bedside. In this review, we highlight the limitations of musculoskeletal regeneration and summarize the most relevant acellular tissue engineering approaches. We focus on the strategies that could be most effectively translate in clinical practice and reflect on contemporary and cutting‐edge regenerative strategies in surgery. Stem Cells Translational Medicine2017;6:2186–2196
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Affiliation(s)
- Francesca Taraballi
- Center for Biomimetic Medicine, Houston Methodist Research Institute, Houston, Texas, USA.,Department of Orthopedic & Sports Medicine, The Houston Methodist Hospital, Houston, Texas, USA
| | - Guillermo Bauza
- Center for Biomimetic Medicine, Houston Methodist Research Institute, Houston, Texas, USA.,Center for NanoHealth, Swansea University Medical School, Swansea University Bay, Singleton Park, Wales, United Kingdom
| | - Patrick McCulloch
- Department of Orthopedic & Sports Medicine, The Houston Methodist Hospital, Houston, Texas, USA
| | - Josh Harris
- Department of Orthopedic & Sports Medicine, The Houston Methodist Hospital, Houston, Texas, USA
| | - Ennio Tasciotti
- Center for Biomimetic Medicine, Houston Methodist Research Institute, Houston, Texas, USA.,Department of Orthopedic & Sports Medicine, The Houston Methodist Hospital, Houston, Texas, USA.,Center for NanoHealth, Swansea University Medical School, Swansea University Bay, Singleton Park, Wales, United Kingdom
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Mannucci S, Calderan L, Quaranta P, Antonini S, Mosca F, Longoni B, Marzola P, Boschi F. Quantum dots labelling allows detection of the homing of mesenchymal stem cells administered as immunomodulatory therapy in an experimental model of pancreatic islets transplantation. J Anat 2016; 230:381-388. [PMID: 27861845 DOI: 10.1111/joa.12563] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2016] [Indexed: 12/28/2022] Open
Abstract
Cell transplantation is considered a promising therapeutic approach in several pathologies but still needs innovative and non-invasive imaging technologies to be validated. The use of mesenchymal stem cells (MSCs) attracts major interest in clinical transplantation thanks to their regenerative properties, low immunogenicity and ability to regulate immune responses. In several animal models, MSCs are used in co-transplantation with pancreatic islets (PIs) for the treatment of type I diabetes, supporting graft survival and prolonging normal glycaemia levels. In this study we investigated the homing of systemically administered MSCs in a rat model of pancreatic portal vein transplantation. MSCs labelled with quantum dots (Qdots) were systemically injected by tail vein and monitored by optical fluorescence imaging. The fluorescence signal of the liver in animals co-transplanted with MSCs and PIs was significantly higher than in control animals in which MSCs alone were transplanted. By using magnetic labelling of PIs, the homing of PIs into liver was independently confirmed. These results demonstrate that MSCs injected in peripheral blood vessels preferentially accumulate into liver when PIs are transplanted in the same organ. Moreover, we prove that bimodal MRI-fluorescence imaging allows specific monitoring of the fate of two types of cells.
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Affiliation(s)
- Silvia Mannucci
- Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona, Italy
| | - Laura Calderan
- Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona, Italy
| | - Paola Quaranta
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Sara Antonini
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Franco Mosca
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Biancamaria Longoni
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Pasquina Marzola
- Department of Computer Science, University of Verona, Verona, Italy
| | - Federico Boschi
- Department of Computer Science, University of Verona, Verona, Italy
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Optimal internal fixation of anatomically shaped synthetic bone grafts for massive segmental defects of long bones. Clin Biomech (Bristol, Avon) 2015; 30:1114-8. [PMID: 26386637 PMCID: PMC9004608 DOI: 10.1016/j.clinbiomech.2015.08.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 08/24/2015] [Accepted: 08/25/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Large segmental bone defects following tumor resection, high-energy civilian trauma, and military blast injuries present significant clinical challenges. Tissue engineering strategies using scaffolds are being considered as a treatment, but there is little research into optimal fixation of such scaffolds. METHODS Twelve fresh-frozen paired cadaveric legs were utilized to simulate a critical sized intercalary defect in the tibia. Poly-ε-caprolactone and hydroxyapatite composite scaffolds 5 cm in length with a geometry representative of the mid-diaphysis of an adult human tibia were fabricated, inserted into a tibial mid-diaphyseal intercalary defect, and fixed with a 14-hole large fragment plate. Optimal screw fixation comparing non-locking and locking screws was tested in axial compression, bending, and torsion in a non-destructive manner. A cyclic torsional test to failure under torque control was then performed. FINDINGS Biomechanical testing showed no significant difference for bending or axial stiffness with non-locking vs. locking fixation. Torsional stiffness was significantly higher (P=0.002) with the scaffold present for both non-locking and locking compared to the scaffold absent. In testing to failure, angular rotation was greater for the non-locking compared to locking constructs at each torque level up to 40 N-m (P<0.05). The locking constructs survived a significantly higher number of loading cycles before reaching clinical failure at 30 degrees of angular rotation (P<0.02). INTERPRETATION The presence of the scaffold increased the torsional stiffness of the construct. Locking fixation resulted in a stronger construct with increased cycles to failure compared to non-locking fixation.
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Lamas López JR. Regenerative medicine applied to treatment of musculoskeletal diseases. ACTA ACUST UNITED AC 2015; 10:139-40. [PMID: 24801749 DOI: 10.1016/j.reuma.2014.04.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 04/04/2014] [Indexed: 12/20/2022]
Affiliation(s)
- José Ramón Lamas López
- Servicio de Reumatología, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, España.
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10
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He D, Wang S, Lei L, Hou Z, Shang P, He X, Nie H. Core–shell particles for controllable release of drug. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2014.08.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Engineered nasal cartilage by cell homing: a model for augmentative and reconstructive rhinoplasty. Plast Reconstr Surg 2014; 133:1344-1353. [PMID: 24867716 DOI: 10.1097/prs.0000000000000232] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Current augmentative and reconstructive rhinoplasties use auto logous tissue grafts or synthetic bioinert materials to repair nasal trauma or attain an aesthetic shape. Autologous grafts are associated with donor-site trauma and morbidity. Synthetic materials are widely used but often yield an unnatural appearance and are prone to infection or dislocation. There is an acute clinical need for the generation of native tissues to serve as rhinoplasty grafts without the undesirable features that are associated with autologous grafts or current synthetic materials. METHODS Bioactive scaffolds were developed that not only recruited cells in the nasal dorsum in vivo, but also induced chondrogenesis of the recruited cells. Bilayered scaffolds were fabricated with alginate-containing gelatin microspheres encapsulating cytokines atop a porous poly(lactic-co-glycolic acid) base. Microspheres were fabricated to contain recombinant human transforming growth factor-β3 at doses of 200, 500, or 1000 ng, with phosphate-buffered saline-loaded microspheres used as a control. A rat model of augmentation rhinoplasty was created by implanting scaffolds atop the native nasal cartilage surface that was scored to induce cell migration. Tissue formation and chondrogenesis in the scaffolds were evaluated by image analysis and histologic staining with hematoxylin and eosin, toluidine blue, Verhoeff elastic-van Geison, and aggrecan immunohistochemistry. RESULTS Sustained release of increasing doses of transforming growth factor-β3 for up to the tested 10 weeks promoted orthotopic cartilage-like tissue formation in a dose-dependent manner. CONCLUSIONS These findings represent the first attempt to engineer cartilage tissue by cell homing for rhinoplasty, and could potentially serve as an alternative material for augmentative and reconstructive rhinoplasty.
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Phenotypic characterization of craniofacial bone marrow stromal cells: unique properties of enhanced osteogenesis, cell recruitment, autophagy, and apoptosis resistance. Cell Tissue Res 2014; 358:165-75. [DOI: 10.1007/s00441-014-1927-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 05/15/2014] [Indexed: 12/15/2022]
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Lee K, Weir MD, Lippens E, Mehta M, Wang P, Duda GN, Kim WS, Mooney DJ, Xu HHK. Bone regeneration via novel macroporous CPC scaffolds in critical-sized cranial defects in rats. Dent Mater 2014; 30:e199-207. [PMID: 24768062 DOI: 10.1016/j.dental.2014.03.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 11/20/2013] [Accepted: 03/25/2014] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Calcium phosphate cement (CPC) is promising for dental and craniofacial applications due to its ability to be injected or filled into complex-shaped bone defects and molded for esthetics, and its resorbability and replacement by new bone. The objective of this study was to investigate bone regeneration via novel macroporous CPC containing absorbable fibers, hydrogel microbeads and growth factors in critical-sized cranial defects in rats. METHODS Mannitol porogen and alginate hydrogel microbeads were incorporated into CPC. Absorbable fibers were used to provide mechanical reinforcement to CPC scaffolds. Six CPC groups were tested in rats: (1) control CPC without macropores and microbeads; (2) macroporous CPC+large fiber; (3) macroporous CPC+large fiber+nanofiber; (4) same as (3), but with rhBMP2 in CPC matrix; (5) same as (3), but with rhBMP2 in CPC matrix+rhTGF-β1 in microbeads; (6) same as (3), but with rhBMP2 in CPC matrix+VEGF in microbeads. Rats were sacrificed at 4 and 24 weeks for histological and micro-CT analyses. RESULTS The macroporous CPC scaffolds containing porogen, absorbable fibers and hydrogel microbeads had mechanical properties similar to cancellous bone. At 4 weeks, the new bone area fraction (mean±sd; n=5) in CPC control group was the lowest at (14.8±3.3)%, and that of group 6 (rhBMP2+VEGF) was (31.0±13.8)% (p<0.05). At 24 weeks, group 4 (rhBMP2) had the most new bone of (38.8±15.6)%, higher than (12.7±5.3)% of CPC control (p<0.05). Micro-CT revealed nearly complete bridging of the critical-sized defects with new bone for several macroporous CPC groups, compared to much less new bone formation for CPC control. SIGNIFICANCE Macroporous CPC scaffolds containing porogen, fibers and microbeads with growth factors were investigated in rat cranial defects for the first time. Macroporous CPCs had new bone up to 2-fold that of traditional CPC control at 4 weeks, and 3-fold that of traditional CPC at 24 weeks, and hence may be useful for dental, craniofacial and orthopedic applications.
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Affiliation(s)
- Kangwon Lee
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Michael D Weir
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Evi Lippens
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Manav Mehta
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Ping Wang
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Georg N Duda
- Julius Wolff Institute, Charité - Universitätsmedizin Berlin and Berlin-Brandenburg Center for Regenerative Therapies, Berlin, Germany
| | - Woo S Kim
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - David J Mooney
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Hockin H K Xu
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Center for Stem Cell Biology and Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Department of Mechanical Engineering, University of Maryland, Baltimore County, MD 21250, USA.
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Lee CH, Hajibandeh J, Suzuki T, Fan A, Shang P, Mao JJ. Three-dimensional printed multiphase scaffolds for regeneration of periodontium complex. Tissue Eng Part A 2014; 20:1342-51. [PMID: 24295512 DOI: 10.1089/ten.tea.2013.0386] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Tooth-supporting periodontium forms a complex with multiple tissues, including cementum, periodontal ligament (PDL), and alveolar bone. In this study, we developed multiphase region-specific microscaffolds with spatiotemporal delivery of bioactive cues for integrated periodontium regeneration. Polycarprolactione-hydroxylapatite (90:10 wt%) scaffolds were fabricated using three-dimensional printing seamlessly in three phases: 100-μm microchannels in Phase A designed for cementum/dentin interface, 600-μm microchannels in Phase B designed for the PDL, and 300-μm microchannels in Phase C designed for alveolar bone. Recombinant human amelogenin, connective tissue growth factor, and bone morphogenetic protein-2 were spatially delivered and time-released in Phases A, B, and C, respectively. Upon 4-week in vitro incubation separately with dental pulp stem/progenitor cells (DPSCs), PDL stem/progenitor cells (PDLSCs), or alveolar bone stem/progenitor cells (ABSCs), distinctive tissue phenotypes were formed with collagen I-rich fibers especially by PDLSCs and mineralized tissues by DPSCs, PDLSCs, and ABSCs. DPSC-seeded multiphase scaffolds upon in vivo implantation yielded aligned PDL-like collagen fibers that inserted into bone sialoprotein-positive bone-like tissue and putative cementum matrix protein 1-positive/dentin sialophosphoprotein-positive dentin/cementum tissues. These findings illustrate a strategy for the regeneration of multiphase periodontal tissues by spatiotemporal delivery of multiple proteins. A single stem/progenitor cell population appears to differentiate into putative dentin/cementum, PDL, and alveolar bone complex by scaffold's biophysical properties and spatially released bioactive cues.
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Affiliation(s)
- Chang H Lee
- Center for Craniofacial Regeneration (CCR), Columbia University Medical Center , New York, New York
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15
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Endogenous morphogens and fibrin bioscaffolds for stem cell therapeutics. Trends Biotechnol 2013; 31:364-74. [DOI: 10.1016/j.tibtech.2013.04.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 04/02/2013] [Accepted: 04/02/2013] [Indexed: 12/20/2022]
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16
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Chen FM, Lu H, Wu LA, Gao LN, An Y, Zhang J. Surface-engineering of glycidyl methacrylated dextran/gelatin microcapsules with thermo-responsive poly(N-isopropylacrylamide) gates for controlled delivery of stromal cell-derived factor-1α. Biomaterials 2013; 34:6515-27. [PMID: 23726519 DOI: 10.1016/j.biomaterials.2013.05.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 05/07/2013] [Indexed: 12/18/2022]
Abstract
In situ tissue engineering has been proposed as a promising method to address the need for the clinical regeneration of a wide variety of damaged tissues. This approach comprises the use of a cell-free instructive scaffold that incorporates and releases topical chemotactic factors to recruit host endogenous stem/progenitor cells for tissue regrowth at the locus of implantation. However, the clinical translation of this concept is hampered when repeated doses of medication must be administrated over an extended period of time. In this study, we designed a delivery platform characterized by microcapsules containing thermo-responsive poly(N-isopropylacrylamide) (PNIPAAm) gates on their outer pore surfaces for the controlled release of stromal cell-derived factor (SDF)-1α, an important chemokine for stem cell recruitment/homing. Double-phase emulsified condensation polymerization was used to prepare interconnected porous glycidyl methacrylated dextran (Dex-GMA)/gelatin microcapsules, and plasma-graft pore-filling polymerization was used to graft PNIPAAm into the surface pores of the microcapsules. The in vitro results showed that the PNIPAAm-grafted microcapsules featured thermo-responsive drug release properties due to the swollen-shrunken property of PNIPAAm gates in response to temperature changes. After subcutaneous implantation, the thermally responsive microcapsules resulted in a more sustained and long-term SDF-1α release compared with those without PNIPAAm-grafting. In the future, this delivery system may have great potential for use in cell recruiting biomaterials for various tissue engineering and regenerative medicine applications.
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Affiliation(s)
- Fa-Ming Chen
- Department of Periodontology and Oral Medicine, School of Stomatology, Fourth Military Medical University, Xi'an 710032, Shaanxi, PR China.
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Abstract
PURPOSE OF REVIEW Regenerative medicine offers the exciting potential of developing alternatives to total joint replacement for treating osteoarthritis. In this article, we highlight recent work that addresses key challenges of stem cell-based therapies for osteoarthritis and provide examples of innovative ways in which stem cells can aid in the treatment of osteoarthritis. RECENT FINDINGS Significant progress has been made in understanding the challenges to successful stem cell therapy, such as the effects of age or disease on stem cell properties, altered stem cell function due to an inflammatory joint environment and phenotypic instability in vivo. Novel scaffold designs have been shown to enhance the mechanical properties of tissue-engineered cartilage and have also improved the integration of newly formed tissue within the joint. Emerging strategies such as injecting stem cells directly into the joint, manipulating endogenous stem cells to enhance regenerative capacity and utilizing stem cells for drug discovery have expanded the potential uses of stem cells in treating osteoarthritis. SUMMARY Several recent studies have greatly advanced the development and preclinical evaluation of potential stem cell-based treatments for osteoarthritis through novel approaches focused on cell therapy, tissue engineering and drug discovery.
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Liu J, Xu HH, Zhou H, Weir MD, Chen Q, Trotman CA. Human umbilical cord stem cell encapsulation in novel macroporous and injectable fibrin for muscle tissue engineering. Acta Biomater 2013; 9:4688-97. [PMID: 22902812 PMCID: PMC3535490 DOI: 10.1016/j.actbio.2012.08.009] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 08/03/2012] [Accepted: 08/08/2012] [Indexed: 12/11/2022]
Abstract
There has been little research on the seeding of human umbilical cord mesenchymal stem cells (hUCMSCs) in three-dimensional scaffolds for muscle tissue engineering. The objectives of this study were: (i) to seed hUCMSCs in a fibrin hydrogel containing fast-degradable microbeads (dMBs) to create macropores to enhance cell viability; and (ii) to investigate the encapsulated cell proliferation and myogenic differentiation for muscle tissue engineering. Mass fractions of 0-80% of dMBs were tested, and 35% of dMBs in fibrin was shown to avoid fibrin shrinkage while creating macropores and promoting cell viability. This construct was referred to as "dMB35". Fibrin without dMBs was termed "dMB0". Microbead degradation created macropores in fibrin and improved cell viability. The percentage of live cells in dMB35 reached 91% at 16 days, higher than the 81% in dMB0 (p<0.05). Live cell density in dMB35 was 1.6-fold that of dMB0 (p<0.05). The encapsulated hUCMSCs proliferated, increasing the cell density by 2.6 times in dMB35 from 1 to 16 days. MTT activity for dMB35 was substantially higher than that for dMB0 at 16 days (p<0.05). hUCMSCs in dMB35 had high gene expressions of myotube markers of myosin heavy chain 1 (MYH1) and alpha-actinin 3 (ACTN3). Elongated, multinucleated cells were formed with positive staining of myogenic specific proteins including myogenin, MYH, ACTN and actin alpha 1. Moreover, a significant increase in cell fusion was detected with myogenic induction. In conclusion, hUCMSCs were encapsulated in fibrin with degradable microbeads for the first time, achieving greatly enhanced cell viability and successful myogenic differentiation with formation of multinucleated myotubes. The injectable and macroporous fibrin-dMB-hUCMSC construct may be promising for muscle tissue engineering applications.
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Affiliation(s)
- Jun Liu
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Hockin H.K. Xu
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA
- Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- University of Maryland Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Mechanical Engineering, University of Maryland, Baltimore County, MD 21250, USA
| | - Hongzhi Zhou
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA
| | - Michael D. Weir
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu 610041, China
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Hutmacher DW, Duda G, Guldberg RE. Endogenous musculoskeletal tissue regeneration. Cell Tissue Res 2012; 347:485-8. [DOI: 10.1007/s00441-012-1357-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 01/31/2012] [Indexed: 01/04/2023]
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