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Bouyoucef M, Rakic R, Gómez-Leduc T, Latire T, Marin F, Leclercq S, Carreiras F, Serpentini A, Lebel JM, Galéra P, Legendre F. Regulation of Extracellular Matrix Synthesis by Shell Extracts from the Marine Bivalve Pecten maximus in Human Articular Chondrocytes- Application for Cartilage Engineering. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2018; 20:436-450. [PMID: 29627869 DOI: 10.1007/s10126-018-9807-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 03/05/2018] [Indexed: 06/08/2023]
Abstract
The shells of the bivalve mollusks are organo-mineral structures predominantly composed of calcium carbonate, but also of a minor organic matrix, a mixture of proteins, glycoproteins, and polysaccharides. These proteins are involved in mineral deposition and, more generally, in the spatial organization of the shell crystallites in well-defined microstructures. In this work, we extracted different organic shell extracts (acid-soluble matrix, acid-insoluble matrix, water-soluble matrix, guanidine HCl/EDTA-extracted matrix, referred as ASM, AIM, WSM, and EDTAM, respectively) from the shell of the scallop Pecten maximus and studied their biological activities on human articular chondrocytes (HACs). We found that these extracts differentially modulate the biological activities of HACs, depending on the type of extraction and the concentration used. Furthermore, we showed that, unlike ASM and AIM, WSM promotes maintenance of the chondrocyte phenotype in monolayer culture. WSM increased the expression of chondrocyte-specific markers (aggrecan and type II collagen), without enhancing that of the main chondrocyte dedifferentiation marker (type I collagen). We also demonstrated that WSM could favor redifferentiation of chondrocyte in collagen sponge scaffold in hypoxia. Thus, this study suggests that the organic matrix of Pecten maximus, particularly WSM, may contain interesting molecules with chondrogenic effects. Our research emphasizes the potential use of WSM of Pecten maximus for cell therapy of cartilage.
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Affiliation(s)
- Mouloud Bouyoucef
- Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Equipe MIPDF, EA 4652, Normandie University, UNICAEN, BIOTARGEN, 14000, Caen, France
| | - Rodolphe Rakic
- Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Equipe MIPDF, EA 4652, Normandie University, UNICAEN, BIOTARGEN, 14000, Caen, France
| | - Tangni Gómez-Leduc
- Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Equipe MIPDF, EA 4652, Normandie University, UNICAEN, BIOTARGEN, 14000, Caen, France
| | - Thomas Latire
- UMR BOREA, Biologie des Organismes et Ecosystèmes Aquatiques, MNHN, UPMC, UCN, CNRS-7208, IRD-207, UFR des Sciences, Normandie University, UNICAEN, 14000, Caen, France
| | - Frédéric Marin
- UMR 6282 CNRS "Biogéosciences", Université de Bourgogne Franche-Comté (UBFC), 6 Boulevard Gabriel, 21000, Dijon, France
| | - Sylvain Leclercq
- Département de Chirurgie Orthopédique, Clinique Saint-Martin, Caen, France
| | - Franck Carreiras
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules (ERRMECe), EA 1391, Institut des Matériaux, Université de Cergy-Pontoise, 2 avenue Adolphe-Chauvin, 95000, Cergy-Pontoise cedex, France
| | - Antoine Serpentini
- UMR BOREA, Biologie des Organismes et Ecosystèmes Aquatiques, MNHN, UPMC, UCN, CNRS-7208, IRD-207, UFR des Sciences, Normandie University, UNICAEN, 14000, Caen, France
| | - Jean-Marc Lebel
- UMR BOREA, Biologie des Organismes et Ecosystèmes Aquatiques, MNHN, UPMC, UCN, CNRS-7208, IRD-207, UFR des Sciences, Normandie University, UNICAEN, 14000, Caen, France
| | - Philippe Galéra
- Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Equipe MIPDF, EA 4652, Normandie University, UNICAEN, BIOTARGEN, 14000, Caen, France.
| | - Florence Legendre
- Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Equipe MIPDF, EA 4652, Normandie University, UNICAEN, BIOTARGEN, 14000, Caen, France
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López-Ruiz E, Jiménez G, García MÁ, Antich C, Boulaiz H, Marchal JA, Perán M. Polymers, scaffolds and bioactive molecules with therapeutic properties in osteochondral pathologies: what’s new? Expert Opin Ther Pat 2016; 26:877-90. [DOI: 10.1080/13543776.2016.1203903] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Elena López-Ruiz
- Department of Health Sciences, University of Jaén, Jaén, Spain
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain
| | - Gema Jiménez
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain
- Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain
| | - María Ángel García
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain
- Department of Oncology, University Hospital Virgen de las Nieves, Granada, Spain
| | - Cristina Antich
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain
- Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain
| | - Houria Boulaiz
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain
- Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain
| | - Juan Antonio Marchal
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain
- Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain
| | - Macarena Perán
- Department of Health Sciences, University of Jaén, Jaén, Spain
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain
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Bernardini G, Chellini F, Frediani B, Spreafico A, Santucci A. Human platelet releasates combined with polyglycolic acid scaffold promote chondrocyte differentiation and phenotypic maintenance. J Biosci 2015; 40:61-9. [PMID: 25740142 DOI: 10.1007/s12038-014-9492-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In the present study, we aimed to demonstrate the differentiating properties of platelet-rich plasma releasates (PRPr) on human chondrocytes seeded on a polygtlycolic acid (PGA) 3D scaffold. Gene expression and biochemical analysis were carried out to assess the improved quality of our PGA-based cartilage constructs supplemented with PRPr. We observed that the use of PRPr as cell cultures supplementation to PGA-chondrocyte constructs may promote chondrocyte differentiation, and thus may contribute to maintaining the chondrogenic phenotype longer than conventional supplementation by increasing high levels of important chondrogenic markers (e.g. sox9, aggrecan and type II collagen), without induction of type I collagen. Moreover, our constructs were analysed for the secretion and deposition of important ECM molecules (sGAG, type II collagen, etc.). Our results indicate that PRPr supplementation may synergize with PGA-based scaffolds to stimulate human articular chondrocyte differentiation, maturation and phenotypic maintenance.
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Affiliation(s)
- Giulia Bernardini
- Dipartimento di Biotecnologie, Chimica e Farmacia, Chirurgiche e Neuroscienze, Universita degli Studi di Siena, Siena, Italy
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Bornes TD, Jomha NM, Mulet-Sierra A, Adesida AB. Hypoxic culture of bone marrow-derived mesenchymal stromal stem cells differentially enhances in vitro chondrogenesis within cell-seeded collagen and hyaluronic acid porous scaffolds. Stem Cell Res Ther 2015; 6:84. [PMID: 25900045 PMCID: PMC4431536 DOI: 10.1186/s13287-015-0075-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 12/09/2014] [Accepted: 04/10/2015] [Indexed: 11/10/2022] Open
Abstract
Introduction The quality of cartilaginous tissue derived from bone marrow mesenchymal stromal stem cell (BMSC) transplantation has been correlated with clinical outcome. Therefore, culture conditions capable of modulating tissue phenotype, such as oxygen tension and scaffold composition, are under investigation. The objective of this study was to assess the effect of hypoxia on in vitro BMSC chondrogenesis within clinically approved porous scaffolds composed of collagen and hyaluronic acid (HA). It was hypothesized that hypoxic isolation/expansion and differentiation would improve BMSC chondrogenesis in each construct. Methods Ovine BMSCs were isolated and expanded to passage 2 under hypoxia (3% oxygen) or normoxia (21% oxygen). Cell proliferation and colony-forming characteristics were assessed. BMSCs were seeded at 10 million cells per cubic centimeter on cylindrical scaffolds composed of either collagen I sponge or esterified HA non-woven mesh. Chondrogenic differentiation was performed in a defined medium under hypoxia or normoxia for 14 days. Cultured constructs were assessed for gene expression, proteoglycan staining, glycosaminoglycan (GAG) quantity, and diameter change. Results Isolation/expansion under hypoxia resulted in faster BMSC population doublings per day (P <0.05), whereas cell and colony counts were not significantly different (P = 0.60 and 0.30, respectively). Collagen and HA scaffolds seeded with BMSCs that were isolated, expanded, and differentiated under hypoxia exhibited superior aggrecan and collagen II mRNA expressions (P <0.05), GAG quantity (P <0.05), and proteoglycan staining in comparison with normoxia. GAG/DNA was augmented with hypoxic isolation/expansion in all constructs (P <0.01). Comparison by scaffold composition indicated increased mRNA expressions of hyaline cartilage-associated collagen II, aggrecan, and SOX9 in collagen scaffolds, although expression of collagen X, which is related to hypertrophic cartilage, was also elevated (P <0.05). Proteoglycan deposition was not significantly improved in collagen scaffolds unless culture involved normoxic isolation/expansion followed by hypoxic differentiation. During chondrogenesis, collagen-based constructs progressively contracted to 60.1% ± 8.9% of the initial diameter after 14 days, whereas HA-based construct size was maintained (109.7% ± 4.2%). Conclusions Hypoxic isolation/expansion and differentiation enhance in vitro BMSC chondrogenesis within porous scaffolds. Although both collagen I and HA scaffolds support the creation of hyaline-like cartilaginous tissue, variations in gene expression, extracellular matrix formation, and construct size occur during chondrogenesis. Electronic supplementary material The online version of this article (doi:10.1186/s13287-015-0075-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Troy D Bornes
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation, Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, T6G 2E1, Canada.
| | - Nadr M Jomha
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation, Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, T6G 2E1, Canada.
| | - Aillette Mulet-Sierra
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation, Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, T6G 2E1, Canada.
| | - Adetola B Adesida
- Laboratory of Stem Cell Biology and Orthopaedic Tissue Engineering, Li Ka Shing Centre for Health Research Innovation, Divisions of Orthopaedic Surgery and Surgical Research, Department of Surgery, University of Alberta, Edmonton, AB, T6G 2E1, Canada.
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Cruet-Hennequart S, Drougard C, Shaw G, Legendre F, Demoor M, Barry F, Lefaix JL, Galéra P. Radiation-induced alterations of osteogenic and chondrogenic differentiation of human mesenchymal stem cells. PLoS One 2015; 10:e0119334. [PMID: 25837977 PMCID: PMC4383487 DOI: 10.1371/journal.pone.0119334] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Accepted: 01/13/2015] [Indexed: 12/27/2022] Open
Abstract
While human mesenchymal stem cells (hMSCs), either in the bone marrow or in tumour microenvironment could be targeted by radiotherapy, their response is poorly understood. The oxic effects on radiosensitivity, cell cycle progression are largely unknown, and the radiation effects on hMSCs differentiation capacities remained unexplored. Here we analysed hMSCs viability and cell cycle progression in 21% O2 and 3% O2 conditions after medical X-rays irradiation. Differentiation towards osteogenesis and chondrogenesis after irradiation was evaluated through an analysis of differentiation specific genes. Finally, a 3D culture model in hypoxia was used to evaluate chondrogenesis in conditions mimicking the natural hMSCs microenvironment. The hMSCs radiosensitivity was not affected by O2 tension. A decreased number of cells in S phase and an increase in G2/M were observed in both O2 tensions after 16 hours but hMSCs released from the G2/M arrest and proliferated at day 7. Osteogenesis was increased after irradiation with an enhancement of mRNA expression of specific osteogenic genes (alkaline phosphatase, osteopontin). Osteoblastic differentiation was altered since matrix deposition was impaired with a decreased expression of collagen I, probably through an increase of its degradation by MMP-3. After induction in monolayers, chondrogenesis was altered after irradiation with an increase in COL1A1 and a decrease in both SOX9 and ACAN mRNA expression. After induction in a 3D culture in hypoxia, chondrogenesis was altered after irradiation with a decrease in COL2A1, ACAN and SOX9 mRNA amounts associated with a RUNX2 increase. Together with collagens I and II proteins decrease, associated to a MMP-13 expression increase, these data show a radiation-induced impairment of chondrogenesis. Finally, a radiation-induced impairment of both osteogenesis and chondrogenesis was characterised by a matrix composition alteration, through inhibition of synthesis and/or increased degradation. Alteration of osteogenesis and chondrogenesis in hMSCs could potentially explain bone/joints defects observed after radiotherapy.
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Affiliation(s)
- Séverine Cruet-Hennequart
- Normandy University, Caen, France; UNICAEN, Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Caen, France
- Laboratoire Accueil en Radiobiologie avec les Ions Accélérés (CEA-DSV-IRCM-LARIA), Bd Becquerel, Caen Cedex 5, France
- Regenerative Medicine Institute (REMEDI), National University of Ireland Galway, Galway, Ireland
| | - Carole Drougard
- Normandy University, Caen, France; UNICAEN, Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Caen, France
| | - Georgina Shaw
- Regenerative Medicine Institute (REMEDI), National University of Ireland Galway, Galway, Ireland
| | - Florence Legendre
- Normandy University, Caen, France; UNICAEN, Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Caen, France
| | - Magali Demoor
- Normandy University, Caen, France; UNICAEN, Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Caen, France
| | - Frank Barry
- Regenerative Medicine Institute (REMEDI), National University of Ireland Galway, Galway, Ireland
| | - Jean-Louis Lefaix
- Laboratoire Accueil en Radiobiologie avec les Ions Accélérés (CEA-DSV-IRCM-LARIA), Bd Becquerel, Caen Cedex 5, France
| | - Philippe Galéra
- Normandy University, Caen, France; UNICAEN, Laboratoire Microenvironnement Cellulaire et Pathologies (MILPAT), Caen, France
- * E-mail:
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Saintigny Y, Cruet-Hennequart S, Hamdi DH, Chevalier F, Lefaix JL. Impact of Therapeutic Irradiation on Healthy Articular Cartilage. Radiat Res 2015; 183:135-46. [DOI: 10.1667/rr13928.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Cartilage tissue engineering: molecular control of chondrocyte differentiation for proper cartilage matrix reconstruction. Biochim Biophys Acta Gen Subj 2014; 1840:2414-40. [PMID: 24608030 DOI: 10.1016/j.bbagen.2014.02.030] [Citation(s) in RCA: 164] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Revised: 02/06/2014] [Accepted: 02/26/2014] [Indexed: 12/18/2022]
Abstract
BACKGROUND Articular cartilage defects are a veritable therapeutic problem because therapeutic options are very scarce. Due to the poor self-regeneration capacity of cartilage, minor cartilage defects often lead to osteoarthritis. Several surgical strategies have been developed to repair damaged cartilage. Autologous chondrocyte implantation (ACI) gives encouraging results, but this cell-based therapy involves a step of chondrocyte expansion in a monolayer, which results in the loss in the differentiated phenotype. Thus, despite improvement in the quality of life for patients, reconstructed cartilage is in fact fibrocartilage. Successful ACI, according to the particular physiology of chondrocytes in vitro, requires active and phenotypically stabilized chondrocytes. SCOPE OF REVIEW This review describes the unique physiology of cartilage, with the factors involved in its formation, stabilization and degradation. Then, we focus on some of the most recent advances in cell therapy and tissue engineering that open up interesting perspectives for maintaining or obtaining the chondrogenic character of cells in order to treat cartilage lesions. MAJOR CONCLUSIONS Current research involves the use of chondrocytes or progenitor stem cells, associated with "smart" biomaterials and growth factors. Other influential factors, such as cell sources, oxygen pressure and mechanical strain are considered, as are recent developments in gene therapy to control the chondrocyte differentiation/dedifferentiation process. GENERAL SIGNIFICANCE This review provides new information on the mechanisms regulating the state of differentiation of chondrocytes and the chondrogenesis of mesenchymal stem cells that will lead to the development of new restorative cell therapy approaches in humans. This article is part of a Special Issue entitled Matrix-mediated cell behaviour and properties.
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Levett PA, Melchels FPW, Schrobback K, Hutmacher DW, Malda J, Klein TJ. A biomimetic extracellular matrix for cartilage tissue engineering centered on photocurable gelatin, hyaluronic acid and chondroitin sulfate. Acta Biomater 2014; 10:214-23. [PMID: 24140603 DOI: 10.1016/j.actbio.2013.10.005] [Citation(s) in RCA: 241] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 09/18/2013] [Accepted: 10/09/2013] [Indexed: 12/19/2022]
Abstract
The development of hydrogels tailored for cartilage tissue engineering has been a research and clinical goal for over a decade. Directing cells towards a chondrogenic phenotype and promoting new matrix formation are significant challenges that must be overcome for the successful application of hydrogels in cartilage tissue therapies. Gelatin-methacrylamide (Gel-MA) hydrogels have shown promise for the repair of some tissues, but have not been extensively investigated for cartilage tissue engineering. We encapsulated human chondrocytes in Gel-MA-based hydrogels, and show that with the incorporation of small quantities of photocrosslinkable hyaluronic acid methacrylate (HA-MA), and to a lesser extent chondroitin sulfate methacrylate (CS-MA), chondrogenesis and mechanical properties can be enhanced. The addition of HA-MA to Gel-MA constructs resulted in more rounded cell morphologies, enhanced chondrogenesis as assessed by gene expression and immunofluorescence, and increased quantity and distribution of the newly synthesized extracellular matrix (ECM) throughout the construct. Consequently, while the compressive moduli of control Gel-MA constructs increased by 26 kPa after 8 weeks culture, constructs with HA-MA and CS-MA increased by 114 kPa. The enhanced chondrogenic differentiation, distribution of ECM, and improved mechanical properties make these materials potential candidates for cartilage tissue engineering applications.
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Affiliation(s)
- Peter A Levett
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, QLD 4059, Australia; Department of Orthopaedics, University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, The Netherlands
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Abstract
Stem cells are being intensively studied for their potential applications in clinical medicine. Mesenchymal stem cells (MSCs) are an important subset of stem cells which are attractive for application in musculoskeletal disorders. In this article, we review the characteristics of these MSCs that are relevant to clinical practice but that are still largely experimental in nature.
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Affiliation(s)
- Alphonsus K. S. Chong
- Department of Hand and Reconstructive Microsurgery, National University Hospital, Singapore
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Min He
- Department of Hand and Reconstructive Microsurgery, National University Hospital, Singapore
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Levett PA, Melchels FPW, Schrobback K, Hutmacher DW, Malda J, Klein TJ. Chondrocyte redifferentiation and construct mechanical property development in single-component photocrosslinkable hydrogels. J Biomed Mater Res A 2013; 102:2544-53. [DOI: 10.1002/jbm.a.34924] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 07/31/2013] [Accepted: 08/12/2013] [Indexed: 02/05/2023]
Affiliation(s)
- Peter A. Levett
- Institute of Health and Biomedical Innovation; Queensland University of Technology; 60 Musk Ave Kelvin Grove QLD 4059 Australia
- Department of Orthopaedics; University Medical Center; P.O. Box 85500 3508 GA Utrecht The Netherlands
| | - Ferry P. W. Melchels
- Institute of Health and Biomedical Innovation; Queensland University of Technology; 60 Musk Ave Kelvin Grove QLD 4059 Australia
- Department of Orthopaedics; University Medical Center; P.O. Box 85500 3508 GA Utrecht The Netherlands
| | - Karsten Schrobback
- Institute of Health and Biomedical Innovation; Queensland University of Technology; 60 Musk Ave Kelvin Grove QLD 4059 Australia
| | - Dietmar W. Hutmacher
- Institute of Health and Biomedical Innovation; Queensland University of Technology; 60 Musk Ave Kelvin Grove QLD 4059 Australia
- George W Woodruff School of Mechanical Engineering; Georgia Institute of Technology; Atlanta, Georgia USA
| | - Jos Malda
- Institute of Health and Biomedical Innovation; Queensland University of Technology; 60 Musk Ave Kelvin Grove QLD 4059 Australia
- Department of Orthopaedics; University Medical Center; P.O. Box 85500 3508 GA Utrecht The Netherlands
| | - Travis J. Klein
- Institute of Health and Biomedical Innovation; Queensland University of Technology; 60 Musk Ave Kelvin Grove QLD 4059 Australia
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