1
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Shaffer KJ, Smith RAA, Daines AM, Luo X, Lu X, Tan TC, Le BQ, Schwörer R, Hinkley SFR, Tyler PC, Nurcombe V, Cool SM. Rational synthesis of a heparan sulfate saccharide that promotes the activity of BMP2. Carbohydr Polym 2024; 333:121979. [PMID: 38494232 DOI: 10.1016/j.carbpol.2024.121979] [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] [Received: 10/03/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/19/2024]
Abstract
Heparan sulfate (HS) is a glycosaminoglycan (GAG) found throughout nature and is involved in a wide range of functions including modulation of cell signalling via sequestration of growth factors. Current consensus is that the specificity of HS motifs for protein binding are individual for each protein. Given the structural complexity of HS the synthesis of libraries of these compounds to probe this is not trivial. Herein we present the synthesis of an HS decamer, the design of which was undertaken rationally from previously published data for HS binding to the growth factor BMP-2. The biological activity of this HS decamer was assessed in vitro, showing that it had the ability to both bind BMP-2 and increase its thermal stability as well as enhancing the bioactivity of BMP-2 in vitro in C2C12 cells. At the same time no undesired anticoagulant effect was observed. This decamer was then analysed in vivo in a rabbit model where higher bone formation, bone mineral density (BMD) and trabecular thickness were observed over an empty defect or collagen implant alone. This indicated that the HS decamer was effective in promoting bone regeneration in vivo.
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Affiliation(s)
- Karl J Shaffer
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Gracefield, Lower Hutt 5010, New Zealand
| | - Raymond A A Smith
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 138673, Singapore; School of Chemical Engineering, University of Queensland, Brisbane, Qld 4072, Australia
| | - Alison M Daines
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Gracefield, Lower Hutt 5010, New Zealand.
| | - Xiaoman Luo
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 138673, Singapore
| | - Xiaohua Lu
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 138673, Singapore
| | - Tuan Chun Tan
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 138673, Singapore
| | - Bach Q Le
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 138673, Singapore
| | - Ralf Schwörer
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Gracefield, Lower Hutt 5010, New Zealand
| | - Simon F R Hinkley
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Gracefield, Lower Hutt 5010, New Zealand
| | - Peter C Tyler
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Gracefield, Lower Hutt 5010, New Zealand
| | - Victor Nurcombe
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 138632, Singapore
| | - Simon M Cool
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 138673, Singapore; School of Chemical Engineering, University of Queensland, Brisbane, Qld 4072, Australia; Department of Orthopaedic Surgery, Yong Yoo Lin School of Medicine, National University of Singapore, Singapore
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2
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Angolkar M, Paramshetti S, Gahtani RM, Al Shahrani M, Hani U, Talath S, Osmani RAM, Spandana A, Gangadharappa HV, Gundawar R. Pioneering a paradigm shift in tissue engineering and regeneration with polysaccharides and proteins-based scaffolds: A comprehensive review. Int J Biol Macromol 2024; 265:130643. [PMID: 38467225 DOI: 10.1016/j.ijbiomac.2024.130643] [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] [Received: 10/13/2023] [Revised: 02/16/2024] [Accepted: 03/03/2024] [Indexed: 03/13/2024]
Abstract
In the realm of modern medicine, tissue engineering and regeneration stands as a beacon of hope, offering the promise of restoring form and function to damaged or diseased organs and tissues. Central to this revolutionary field are biological macromolecules-nature's own blueprints for regeneration. The growing interest in bio-derived macromolecules and their composites is driven by their environmentally friendly qualities, renewable nature, minimal carbon footprint, and widespread availability in our ecosystem. Capitalizing on these unique attributes, specific composites can be tailored and enhanced for potential utilization in the realm of tissue engineering (TE). This review predominantly concentrates on the present research trends involving TE scaffolds constructed from polysaccharides, proteins and glycosaminoglycans. It provides an overview of the prerequisites, production methods, and TE applications associated with a range of biological macromolecules. Furthermore, it tackles the challenges and opportunities arising from the adoption of these biomaterials in the field of TE. This review also presents a novel perspective on the development of functional biomaterials with broad applicability across various biomedical applications.
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Affiliation(s)
- Mohit Angolkar
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570015, Karnataka, India
| | - Sharanya Paramshetti
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570015, Karnataka, India
| | - Reem M Gahtani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia.
| | - Mesfer Al Shahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia.
| | - Umme Hani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia.
| | - Sirajunisa Talath
- Department of Pharmaceutical Chemistry, RAK College of Pharmaceutical Sciences, RAK Medical and Health Sciences University, Ras Al Khaimah 11172, United Arab Emirates.
| | - Riyaz Ali M Osmani
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570015, Karnataka, India.
| | - Asha Spandana
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570015, Karnataka, India.
| | | | - Ravi Gundawar
- Department of Pharmaceutical Quality Assurance, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India.
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3
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Le Pennec J, Picart C, Vivès RR, Migliorini E. Sweet but Challenging: Tackling the Complexity of GAGs with Engineered Tailor-Made Biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312154. [PMID: 38011916 DOI: 10.1002/adma.202312154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Indexed: 11/29/2023]
Abstract
Glycosaminoglycans (GAGs) play a crucial role in tissue homeostasis by regulating the activity and diffusion of bioactive molecules. Incorporating GAGs into biomaterials has emerged as a widely adopted strategy in medical applications, owing to their biocompatibility and ability to control the release of bioactive molecules. Nevertheless, immobilized GAGs on biomaterials can elicit distinct cellular responses compared to their soluble forms, underscoring the need to understand the interactions between GAG and bioactive molecules within engineered functional biomaterials. By controlling critical parameters such as GAG type, density, and sulfation, it becomes possible to precisely delineate GAG functions within a biomaterial context and to better mimic specific tissue properties, enabling tailored design of GAG-based biomaterials for specific medical applications. However, this requires access to pure and well-characterized GAG compounds, which remains challenging. This review focuses on different strategies for producing well-defined GAGs and explores high-throughput approaches employed to investigate GAG-growth factor interactions and to quantify cellular responses on GAG-based biomaterials. These automated methods hold considerable promise for improving the understanding of the diverse functions of GAGs. In perspective, the scientific community is encouraged to adopt a rational approach in designing GAG-based biomaterials, taking into account the in vivo properties of the targeted tissue for medical applications.
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Affiliation(s)
- Jean Le Pennec
- U1292 Biosanté, INSERM, CEA, Univ. Grenoble Alpes, CNRS EMR 5000 Biomimetism and Regenerative Medicine, Grenoble, F-38054, France
| | - Catherine Picart
- U1292 Biosanté, INSERM, CEA, Univ. Grenoble Alpes, CNRS EMR 5000 Biomimetism and Regenerative Medicine, Grenoble, F-38054, France
| | | | - Elisa Migliorini
- U1292 Biosanté, INSERM, CEA, Univ. Grenoble Alpes, CNRS EMR 5000 Biomimetism and Regenerative Medicine, Grenoble, F-38054, France
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4
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Miguez PA, Bash E, Musskopf ML, Tuin SA, Rivera-Concepcion A, Chapple ILC, Liu J. Control of tissue homeostasis by the extracellular matrix: Synthetic heparan sulfate as a promising therapeutic for periodontal health and bone regeneration. Periodontol 2000 2024; 94:510-531. [PMID: 37614159 PMCID: PMC10891305 DOI: 10.1111/prd.12515] [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: 06/19/2023] [Revised: 07/13/2023] [Accepted: 07/22/2023] [Indexed: 08/25/2023]
Abstract
Proteoglycans are core proteins associated with carbohydrate/sugar moieties that are highly variable in disaccharide composition, which dictates their function. These carbohydrates are named glycosaminoglycans, and they can be attached to proteoglycans or found free in tissues or on cell surfaces. Glycosaminoglycans such as hyaluronan, chondroitin sulfate, dermatan sulfate, keratan sulfate, and heparin/heparan sulfate have multiple functions including involvement in inflammation, immunity and connective tissue structure, and integrity. Heparan sulfate is a highly sulfated polysaccharide that is abundant in the periodontium including alveolar bone. Recent evidence supports the contention that heparan sulfate is an important player in modulating interactions between damage associated molecular patterns and inflammatory receptors expressed by various cell types. The structure of heparan sulfate is reported to dictate its function, thus, the utilization of a homogenous and structurally defined heparan sulfate polysaccharide for modulation of cell function offers therapeutic potential. Recently, a chemoenzymatic approach was developed to allow production of many structurally defined heparan sulfate carbohydrates. These oligosaccharides have been studied in various pathological inflammatory conditions to better understand their function and their potential application in promoting tissue homeostasis. We have observed that specific size and sulfation patterns can modulate inflammation and promote tissue maintenance including an anabolic effect in alveolar bone. Thus, new evidence provides a strong impetus to explore heparan sulfate as a potential novel therapeutic agent to treat periodontitis, support alveolar bone maintenance, and promote bone formation.
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Affiliation(s)
- PA Miguez
- Division of Comprehensive Oral Health - Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - E Bash
- Division of Comprehensive Oral Health - Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - ML Musskopf
- Division of Comprehensive Oral Health - Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - SA Tuin
- Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - A Rivera-Concepcion
- Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - ILC Chapple
- Periodontal Research Group, School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, Birmingham’s NIHR BRC in Inflammation Research, University of Birmingham and Birmingham Community Health Foundation Trust, Birmingham UK Iain Chapple
| | - J Liu
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA
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5
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Luo X, Lau CS, Le BQ, Tan TC, Too JH, Smith RAA, Yu N, Cool SM. Affinity-selected heparan sulfate collagen device promotes periodontal regeneration in an intrabony defect model in Macaca fascicularis. Sci Rep 2023; 13:11774. [PMID: 37479738 PMCID: PMC10362032 DOI: 10.1038/s41598-023-38818-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 07/15/2023] [Indexed: 07/23/2023] Open
Abstract
It is challenging to regenerate periodontal tissues fully. We have previously reported a heparan sulfate variant with enhanced affinity for bone morphogenetic protein-2, termed HS3, that enhanced periodontal tissue regeneration in a rodent model. Here we seek to transition this work closer to the clinic and investigate the efficacy of the combination HS3 collagen device in a non-human primate (NHP) periodontitis model. Wire-induced periodontitis was generated in ten Macaca fascicularis, and defects were treated with Emdogain or collagen (CollaPlug) loaded with (1) distilled water, (2) HS low (36 µg of HS3), or (3) HS high (180 µg of HS3) for 3 months. At the endpoint, microscopic assessment showed significantly less epithelial down-growth, greater alveolar bone filling, and enhanced cementum and periodontal ligament regeneration following treatment with the HS-collagen combination devices. When evaluated using a periodontal regeneration assessment score (PRAS) on a scale of 0-16, collagen scored 6.78 (± 2.64), Emdogain scored 10.50 (± 1.73) and HS low scored 10.40 (± 1.82). Notably, treatment with HS high scored 12.27 (± 2.20), while healthy control scored 14.80 (± 1.15). This study highlights the efficacy of an HS-collagen device for periodontal regeneration in a clinically relevant NHP periodontitis model and warrants its application in clinical trials.
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Affiliation(s)
- Xiaoman Luo
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Dr, Proteos, Singapore, 138673, Singapore
| | - Chau Sang Lau
- National Dental Research Institute Singapore, National Dental Centre Singapore, 5 Second Hospital Ave, Singapore, 168938, Singapore
- Duke-NUS Medical School, National University of Singapore, Singapore, 169857, Singapore
| | - Bach Quang Le
- Bioprocessing Technology Institute, Agency for Science Technology and Research (A*STAR), 20 Biopolis Way, Singapore, 138668, Singapore
| | - Tuan Chun Tan
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Dr, Proteos, Singapore, 138673, Singapore
| | - Jian Hui Too
- National Dental Research Institute Singapore, National Dental Centre Singapore, 5 Second Hospital Ave, Singapore, 168938, Singapore
| | - Raymond Alexander Alfred Smith
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Dr, Proteos, Singapore, 138673, Singapore
- School of Chemical Engineering, The University of Queensland, 46 Staff House Rd, St Lucia, QLD, 4072, Australia
| | - Na Yu
- National Dental Research Institute Singapore, National Dental Centre Singapore, 5 Second Hospital Ave, Singapore, 168938, Singapore.
- Duke-NUS Medical School, National University of Singapore, Singapore, 169857, Singapore.
| | - Simon M Cool
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Dr, Proteos, Singapore, 138673, Singapore.
- School of Chemical Engineering, The University of Queensland, 46 Staff House Rd, St Lucia, QLD, 4072, Australia.
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6
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Heide F, Koch M, Stetefeld J. Heparin Mimetics and Their Impact on Extracellular Matrix Protein Assemblies. Pharmaceuticals (Basel) 2023; 16:ph16030471. [PMID: 36986571 PMCID: PMC10059586 DOI: 10.3390/ph16030471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/08/2023] [Accepted: 03/21/2023] [Indexed: 03/30/2023] Open
Abstract
Heparan sulfate is a crucial extracellular matrix component that organizes structural features and functional protein processes. This occurs through the formation of protein-heparan sulfate assemblies around cell surfaces, which allow for the deliberate local and temporal control of cellular signaling. As such, heparin-mimicking drugs can directly affect these processes by competing with naturally occurring heparan sulfate and heparin chains that then disturb protein assemblies and decrease regulatory capacities. The high number of heparan-sulfate-binding proteins that are present in the extracellular matrix can cause obscure pathological effects that should be considered and examined in more detail, especially when developing novel mimetics for clinical use. The objective of this article is to investigate recent studies that present heparan-sulfate-mediated protein assemblies and the impact of heparin mimetics on the assembly and function of these protein complexes.
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Affiliation(s)
- Fabian Heide
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Manuel Koch
- Institute for Experimental Dental Research and Oral Musculoskeletal Biology, Center for Biochemistry, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Jörg Stetefeld
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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7
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Sargison L, Smith RAA, Carnachan SM, Daines AM, Brackovic A, Kidgell JT, Nurcombe V, Cool SM, Sims IM, Hinkley SFR. Variability in the composition of porcine mucosal heparan sulfates. Carbohydr Polym 2022; 282:119081. [PMID: 35123736 DOI: 10.1016/j.carbpol.2021.119081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 12/16/2021] [Accepted: 12/28/2021] [Indexed: 11/18/2022]
Abstract
Commercial porcine intestinal mucosal heparan sulfate (HS) is a valuable material for research into its biological functions. As it is usually produced as a side-stream of pharmaceutical heparin manufacture, its chemical composition may vary from batch to batch. We analysed the composition and structure of nine batches of HS from the same manufacturer. Statistical analysis of the disaccharide compositions placed these batches in three categories: group A had high GlcNAc and GlcNS, and low GlcN typical of HS; group B had high GlcN and GlcNS, and low GlcNAc; group C had high di- and trisulfated, and low unsulfated and monosulfated disaccharide repeats. These batches could be placed in the same categories based on their 1H NMR spectra and molecular weights. Anticoagulant and growth factor binding activities of these HS batches did not fit within these same groups but were related to the proportions of more highly sulfated disaccharide repeats.
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Affiliation(s)
- Liam Sargison
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt 5040, New Zealand.
| | - Raymond A A Smith
- Institute of Molecular and Cell Biology (IMCB), Glycotherapeutics Group, Agency for Science, Technology and Research (A*STAR), A*STAR, 138673, Singapore.
| | - Susan M Carnachan
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt 5040, New Zealand.
| | - Alison M Daines
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt 5040, New Zealand.
| | - Amira Brackovic
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt 5040, New Zealand.
| | - Joel T Kidgell
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt 5040, New Zealand.
| | - Victor Nurcombe
- Institute of Molecular and Cell Biology (IMCB), Glycotherapeutics Group, Agency for Science, Technology and Research (A*STAR), A*STAR, 138673, Singapore
| | - Simon M Cool
- Institute of Molecular and Cell Biology (IMCB), Glycotherapeutics Group, Agency for Science, Technology and Research (A*STAR), A*STAR, 138673, Singapore.
| | - Ian M Sims
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt 5040, New Zealand.
| | - Simon F R Hinkley
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt 5040, New Zealand.
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8
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Cohen T, Kossover O, Peled E, Bick T, Hasanov L, Chun TT, Cool S, Lewinson D, Seliktar D. A combined cell and growth factor delivery for the repair of a critical size tibia defect using biodegradable hydrogel implants. J Tissue Eng Regen Med 2022; 16:380-395. [PMID: 35119200 PMCID: PMC9303443 DOI: 10.1002/term.3285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/09/2021] [Accepted: 01/11/2022] [Indexed: 11/16/2022]
Abstract
The ability to repair critical‐sized long‐bone injuries using growth factor and cell delivery was investigated using hydrogel biomaterials. Physiological doses of the recombinant human bone morphogenic protein‐2 (rhBMP2) were delivered in a sustained manner from a biodegradable hydrogel containing peripheral human blood‐derived endothelial progenitor cells (hEPCs). The biodegradable implants made from polyethylene glycol (PEG) and denatured fibrinogen (PEG‐fibrinogen, PF) were loaded with 7.7 μg/ml of rhBMP2 and 2.5 × 106 cells/ml hEPCs. The safety and efficacy of the implant were tested in a rodent model of a critical‐size long‐bone defect. The hydrogel implants were formed ex‐situ and placed into defects in the tibia of athymic nude rats and analyzed for bone repair after 13 weeks following surgery. The hydrogels containing a combination of 7.7 μg/ml of rhBMP2 and 2.5 × 106 cells/ml hEPCs were compared to control hydrogels containing 7.7 μg/ml of rhBMP2 only, 2.5 × 106 cells/ml hEPCs only, or bare hydrogels. Assessments of bone repair include histological analysis, bone formation at the site of implantation using quantitative microCT, and assessment of implant degradation. New bone formation was detected in all treated animals, with the highest amounts found in the treatments that included animals that combined the PF implant with rhBMP2. Moreover, statistically significant increases in the tissue mineral density (TMD), trabecular number and trabecular thickness were observed in defects treated with rhBMP2 compared to non‐rhBMP2 defects. New bone formation was significantly higher in the hEPC‐treated defects compared to bare hydrogel defects, but there were no significant differences in new bone formation, trabecular number, trabecular thickness or TMD at 13 weeks when comparing the rhBMP2 + hEPCs‐treated defects to rhBMP2‐treated defects. The study concludes that the bone regeneration using hydrogel implants containing hEPCs are overshadowed by enhanced osteogenesis associated with sustained delivery of rhBMP2.
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Affiliation(s)
- Talia Cohen
- The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Olga Kossover
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Eli Peled
- The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.,Department of Orthopedic Surgery, Rambam Medical Center, Haifa, Israel
| | - Tova Bick
- The Institute of Research of Bone Healing, the Rambam Healthcare Campus, Haifa, Israel
| | - Lena Hasanov
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Tan Tuan Chun
- Glycotherapeutics Group, Institute of Molecular and Cell Biology, A*STAR, Singapore, Singapore
| | - Simon Cool
- Glycotherapeutics Group, Institute of Molecular and Cell Biology, A*STAR, Singapore, Singapore
| | - Dina Lewinson
- The Institute of Research of Bone Healing, the Rambam Healthcare Campus, Haifa, Israel
| | - Dror Seliktar
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
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9
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Smith MM, Hayes AJ, Melrose J. Pentosan Polysulphate (PPS), a Semi-Synthetic Heparinoid DMOAD With Roles in Intervertebral Disc Repair Biology emulating The Stem Cell Instructive and Tissue Reparative Properties of Heparan Sulphate. Stem Cells Dev 2022; 31:406-430. [PMID: 35102748 DOI: 10.1089/scd.2022.0007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This review highlights the attributes of pentosan polysulphate (PPS) in the promotion of intervertebral disc (IVD) repair processes. PPS has been classified as a disease modifying osteoarthritic drug (DMOAD) and many studies have demonstrated its positive attributes in the countering of degenerative changes occurring in cartilaginous tissues during the development of osteoarthritis (OA). Degenerative changes in the IVD also involve inflammatory cytokines, degradative proteases and cell signalling pathways similar to those operative in the development of OA in articular cartilage. PPS acts as a heparan sulphate (HS) mimetic to effect its beneficial effects in cartilage. The IVD contains small cell membrane HS-proteoglycans (HSPGs) such as syndecan, and glypican and a large multifunctional HS/chondroitin sulphate (CS) hybrid proteoglycan (HSPG2/perlecan) that have important matrix stabilising properties and sequester, control and present growth factors from the FGF, VEGF, PDGF and BMP families to cellular receptors to promote cell proliferation, differentiation and matrix synthesis. HSPG2 also has chondrogenic properties and stimulates the synthesis of extracellular matrix (ECM) components, expansion of cartilaginous rudiments and has roles in matrix stabilisation and repair. Perlecan is a perinuclear and nuclear proteoglycan in IVD cells with roles in chromatin organisation and control of transcription factor activity, immunolocalises to stem cell niches in cartilage, promotes escape of stem cells from quiescent recycling, differentiation and attainment of pluripotency and migratory properties. These participate in tissue development and morphogenesis, ECM remodelling and repair. PPS also localises in the nucleus of stromal stem cells, promotes development of chondroprogenitor cell lineages, ECM synthesis and repair and discal repair by resident disc cells. The availability of recombinant perlecan and PPS offer new opportunities in repair biology. These multifunctional agents offer welcome new developments in repair strategies for the IVD.
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Affiliation(s)
- Margaret M Smith
- The University of Sydney Raymond Purves Bone and Joint Research Laboratories, 247198, St Leonards, New South Wales, Australia;
| | - Anthony J Hayes
- Cardiff School of Biosciences, University of Cardiff, UK, Bioimaging Unit, Cardiff, Wales, United Kingdom of Great Britain and Northern Ireland;
| | - James Melrose
- Kolling Institute, University of Sydney, Royal North Shore Hospital, Raymond Purves Lab, Sydney Medical School Northern, Level 10, Kolling Institute B6, Royal North Shore Hospital, St. Leonards, New South Wales, Australia, 2065.,University of New South Wales, 7800, Graduate School of Biomedical Engineering, University of NSW, Sydney, New South Wales, Australia, 2052;
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10
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Chen J, Sun T, You Y, Wu B, Wang X, Wu J. Proteoglycans and Glycosaminoglycans in Stem Cell Homeostasis and Bone Tissue Regeneration. Front Cell Dev Biol 2021; 9:760532. [PMID: 34917612 PMCID: PMC8669051 DOI: 10.3389/fcell.2021.760532] [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] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 10/25/2021] [Indexed: 12/20/2022] Open
Abstract
Stem cells maintain a subtle balance between self-renewal and differentiation under the regulatory network supported by both intracellular and extracellular components. Proteoglycans are large glycoproteins present abundantly on the cell surface and in the extracellular matrix where they play pivotal roles in facilitating signaling transduction and maintaining stem cell homeostasis. In this review, we outline distinct proteoglycans profiles and their functions in the regulation of stem cell homeostasis, as well as recent progress and prospects of utilizing proteoglycans/glycosaminoglycans as a novel glycomics carrier or bio-active molecules in bone regeneration.
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Affiliation(s)
- Jiawen Chen
- School of Stomatology, Southern Medical University, Guangzhou, China
| | - Tianyu Sun
- Department of Periodontology, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yan You
- School of Stomatology, Southern Medical University, Guangzhou, China
| | - Buling Wu
- School of Stomatology, Southern Medical University, Guangzhou, China.,Department of Endodontics, Shenzhen Stomatology Hospital, Southern Medical University, Shenzhen, China
| | - Xiaofang Wang
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX, United states
| | - Jingyi Wu
- Center of Oral Implantology, Stomatological Hospital, Southern Medical University, Guangzhou, China
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11
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Xu Z, Chen S, Feng D, Liu Y, Wang Q, Gao T, Liu Z, Zhang Y, Chen J, Qiu L. Biological role of heparan sulfate in osteogenesis: A review. Carbohydr Polym 2021; 272:118490. [PMID: 34420746 DOI: 10.1016/j.carbpol.2021.118490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 07/23/2021] [Accepted: 07/23/2021] [Indexed: 12/14/2022]
Abstract
Heparan sulfate (HS) is extensively expressed in cells, for example, cell membrane and extracellular matrix of most mammalian cells and tissues, playing a key role in the growth and development of life by maintaining homeostasis and implicating in the etiology and diseases. Recent studies have revealed that HS is involved in osteogenesis via coordinating multiple signaling pathways. The potential effect of HS on osteogenesis is a complicated and delicate biological process, which involves the participation of osteocytes, chondrocytes, osteoblasts, osteoclasts and a variety of cytokines. In this review, we summarized the structural and functional characteristics of HS and highlighted the molecular mechanism of HS in bone metabolism to provide novel research perspectives for the further medical research.
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Affiliation(s)
- Zhujie Xu
- Department of Orthopedics, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, Jiangsu 214023, PR China
| | - Shayang Chen
- Department of Orthopedics, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, Jiangsu 214023, PR China
| | - Dehong Feng
- Department of Orthopedics, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, Jiangsu 214023, PR China
| | - Yi Liu
- Department of Orthopedics, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, Jiangsu 214023, PR China.
| | - Qiqi Wang
- Department of Orthopedics, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, Jiangsu 214023, PR China
| | - Tianshu Gao
- Department of Orthopedics, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, Jiangsu 214023, PR China
| | - Zhenwei Liu
- Department of Orthopedics, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, Jiangsu 214023, PR China
| | - Yan Zhang
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Jinghua Chen
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Lipeng Qiu
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China.
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12
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The 3- O-sulfation of heparan sulfate modulates protein binding and lyase degradation. Proc Natl Acad Sci U S A 2021; 118:2012935118. [PMID: 33441484 DOI: 10.1073/pnas.2012935118] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Humans express seven heparan sulfate (HS) 3-O-sulfotransferases that differ in substrate specificity and tissue expression. Although genetic studies have indicated that 3-O-sulfated HS modulates many biological processes, ligand requirements for proteins engaging with HS modified by 3-O-sulfate (3-OS) have been difficult to determine. In particular, the context in which the 3-OS group needs to be presented for binding is largely unknown. We describe herein a modular synthetic approach that can provide structurally diverse HS oligosaccharides with and without 3-OS. The methodology was employed to prepare 27 hexasaccharides that were printed as a glycan microarray to examine ligand requirements of a wide range of HS-binding proteins. The binding selectivity of antithrombin-III (AT-III) compared well with anti-Factor Xa activity supporting robustness of the array technology. Many of the other examined HS-binding proteins required an IdoA2S-GlcNS3S6S sequon for binding but exhibited variable dependence for the 2-OS and 6-OS moieties, and a GlcA or IdoA2S residue neighboring the central GlcNS3S. The HS oligosaccharides were also examined as inhibitors of cell entry by herpes simplex virus type 1, which, surprisingly, showed a lack of dependence of 3-OS, indicating that, instead of glycoprotein D (gD), they competitively bind to gB and gC. The compounds were also used to examine substrate specificities of heparin lyases, which are enzymes used for depolymerization of HS/heparin for sequence determination and production of therapeutic heparins. It was found that cleavage by lyase II is influenced by 3-OS, while digestion by lyase I is only affected by 2-OS. Lyase III exhibited sensitivity to both 3-OS and 2-OS.
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13
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Sodhi H, Panitch A. Glycosaminoglycans in Tissue Engineering: A Review. Biomolecules 2020; 11:E29. [PMID: 33383795 PMCID: PMC7823287 DOI: 10.3390/biom11010029] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 12/11/2022] Open
Abstract
Glycosaminoglycans are native components of the extracellular matrix that drive cell behavior and control the microenvironment surrounding cells, making them promising therapeutic targets for a myriad of diseases. Recent studies have shown that recapitulation of cell interactions with the extracellular matrix are key in tissue engineering, where the aim is to mimic and regenerate endogenous tissues. Because of this, incorporation of glycosaminoglycans to drive stem cell fate and promote cell proliferation in engineered tissues has gained increasing attention. This review summarizes the role glycosaminoglycans can play in tissue engineering and the recent advances in their use in these constructs. We also evaluate the general trend of research in this niche and provide insight into its future directions.
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Affiliation(s)
- Harkanwalpreet Sodhi
- Department of Biomedical Engineering, University of California Davis, Davis, CA 95616, USA;
| | - Alyssa Panitch
- Department of Biomedical Engineering, University of California Davis, Davis, CA 95616, USA;
- Department of Surgery, University of California Davis, Sacramento, CA 95817, USA
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14
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Migliorini E, Guevara-Garcia A, Albiges-Rizo C, Picart C. Learning from BMPs and their biophysical extracellular matrix microenvironment for biomaterial design. Bone 2020; 141:115540. [PMID: 32730925 PMCID: PMC7614069 DOI: 10.1016/j.bone.2020.115540] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 07/17/2020] [Accepted: 07/18/2020] [Indexed: 01/19/2023]
Abstract
It is nowadays well-accepted that the extracellular matrix (ECM) is not a simple reservoir for growth factors but is an organization center of their biological activity. In this review, we focus on the ability of the ECM to regulate the biological activity of BMPs. In particular, we survey the role of the ECM components, notably the glycosaminoglycans and fibrillary ECM proteins, which can be promoters or repressors of the biological activities mediated by the BMPs. We examine how a process called mechano-transduction induced by the ECM can affect BMP signaling, including BMP internalization by the cells. We also focus on the spatio-temporal regulation of the BMPs, including their release from the ECM, which enables to modulate their spatial localization as well as their local concentration. We highlight how biomaterials can recapitulate some aspects of the BMPs/ECM interactions and help to answer fundamental questions to reveal previously unknown molecular mechanisms. Finally, the design of new biomaterials inspired by the ECM to better present BMPs is discussed, and their use for a more efficient bone regeneration in vivo is also highlighted.
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Affiliation(s)
- Elisa Migliorini
- CNRS, Grenoble Institute of Technology, LMGP, UMR 5628, 3 Parvis Louis Néel, 38016 Grenoble, France; CEA, Institute of Interdisciplinary Research of Grenoble (IRIG), Biomimetism and Regenerative Medicine Lab, ERL 5000, Université Grenoble-Alpes (UGA)/CEA/CNRS, Grenoble France.
| | - Amaris Guevara-Garcia
- CNRS, Grenoble Institute of Technology, LMGP, UMR 5628, 3 Parvis Louis Néel, 38016 Grenoble, France; CEA, Institute of Interdisciplinary Research of Grenoble (IRIG), Biomimetism and Regenerative Medicine Lab, ERL 5000, Université Grenoble-Alpes (UGA)/CEA/CNRS, Grenoble France; Université Grenoble Alpes, Institut for Advances Biosciences, Institute Albert Bonniot, INSERM U1209, CNRS 5309, La Tronche, France
| | - Corinne Albiges-Rizo
- Université Grenoble Alpes, Institut for Advances Biosciences, Institute Albert Bonniot, INSERM U1209, CNRS 5309, La Tronche, France
| | - Catherine Picart
- CNRS, Grenoble Institute of Technology, LMGP, UMR 5628, 3 Parvis Louis Néel, 38016 Grenoble, France; CEA, Institute of Interdisciplinary Research of Grenoble (IRIG), Biomimetism and Regenerative Medicine Lab, ERL 5000, Université Grenoble-Alpes (UGA)/CEA/CNRS, Grenoble France.
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15
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Ravikumar M, Smith RAA, Nurcombe V, Cool SM. Heparan Sulfate Proteoglycans: Key Mediators of Stem Cell Function. Front Cell Dev Biol 2020; 8:581213. [PMID: 33330458 PMCID: PMC7710810 DOI: 10.3389/fcell.2020.581213] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/29/2020] [Indexed: 12/11/2022] Open
Abstract
Heparan sulfate proteoglycans (HSPGs) are an evolutionarily ancient subclass of glycoproteins with exquisite structural complexity. They are ubiquitously expressed across tissues and have been found to exert a multitude of effects on cell behavior and the surrounding microenvironment. Evidence has shown that heterogeneity in HSPG composition is crucial to its functions as an essential scaffolding component in the extracellular matrix as well as a vital cell surface signaling co-receptor. Here, we provide an overview of the significance of HSPGs as essential regulators of stem cell function. We discuss the various roles of HSPGs in distinct stem cell types during key physiological events, from development through to tissue homeostasis and regeneration. The contribution of aberrant HSPG production to altered stem cell properties and dysregulated cellular homeostasis characteristic of cancer is also reviewed. Finally, we consider approaches to better understand and exploit the multifaceted functions of HSPGs in influencing stem cell characteristics for cell therapy and associated culture expansion strategies.
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Affiliation(s)
- Maanasa Ravikumar
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore.,Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Raymond Alexander Alfred Smith
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore
| | - Victor Nurcombe
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University-Imperial College London, Singapore, Singapore
| | - Simon M Cool
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A∗STAR), Singapore, Singapore.,Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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16
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Bioactive and Topographically-Modified Electrospun Membranes for the Creation of New Bone Regeneration Models. Processes (Basel) 2020. [DOI: 10.3390/pr8111341] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Bone injuries that arise from trauma, cancer treatment, or infection are a major and growing global challenge. An increasingly ageing population plays a key role in this, since a growing number of fractures are due to diseases such as osteoporosis, which place a burden on healthcare systems. Current reparative strategies do not sufficiently consider cell-substrate interactions that are found in healthy tissues; therefore, the need for more complex models is clear. The creation of in vitro defined 3D microenvironments is an emerging topographically-orientated approach that provides opportunities to apply knowledge of cell migration and differentiation mechanisms to the creation of new cell substrates. Moreover, introducing biofunctional agents within in vitro models for bone regeneration has allowed, to a certain degree, the control of cell fate towards osteogenic pathways. In this research, we applied three methods for functionalizing spatially-confined electrospun artificial microenvironments that presented relevant components of the native bone stem cell niche. The biological and osteogenic behaviors of mesenchymal stromal cells (MSCs) were investigated on electrospun micro-fabricated scaffolds functionalized with extracellular matrix (ECM) proteins (collagen I), glycosaminoglycans (heparin), and ceramic-based materials (bioglass). Collagen, heparin, and bioglass (BG) were successfully included in the models without modifying the fibrous structures offered by the polycaprolactone (PCL) scaffolds. Mesenchymal stromal cells (MSCs) were successfully seeded in all the biofunctional scaffolds and they showed an increase in alkaline phosphatase production when exposed to PCL/BG composites. This research demonstrates the feasibility of manufacturing smart and hierarchical artificial microenvironments for studying stem cell behavior and ultimately the potential of incorporating these artificial microenvironments into multifunctional membranes for bone tissue regeneration
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17
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Quang Le B, Chun Tan T, Lee SB, Woong Jang J, Sik Kim Y, Soo Lee J, Won Choi J, Sathiyanathan P, Nurcombe V, Cool SM. A biomimetic collagen-bone granule-heparan sulfate combination scaffold for BMP2 delivery. Gene 2020; 769:145217. [PMID: 33039540 DOI: 10.1016/j.gene.2020.145217] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 10/05/2020] [Indexed: 01/17/2023]
Abstract
Bone morphogenetic protein 2 (BMP2)-induced bone regeneration is most efficacious when a carrier can deliver the growth factor into the defect site while minimizing off-target effects. The control of BMP2 release by such carriers is proving one of the most critical aspects of BMP2 therapy. Thus, increasing numbers of biomaterials are being developed to satisfy the simultaneous need for sustained release, reduced rates of degradation and enhanced activity of the growth factor. Here we report on a biomimetic scaffold consisting of bovine collagen type I, bone granules (Intergraft™), and heparan sulfate with increased affinity for BMP2 (HS3). The HS3 and collagen were complexed and then crosslinked via a simple dehydrothermal method. When loaded with a clinically relevant amount of BMP2 (1.25 mg/cc), the HS3-functionalised scaffolds were able to retain up to 58% of the initial amount of BMP2 over 27 days, approximately 3-fold higher than scaffolds without HS3. The bioactivity of the retained BMP2 was confirmed by gene expression in myoblast cells (C2C12) cultured on the scaffolds under osteogenic stimulation. Together these data demonstrate the efficacy of HS3 as a material to improve the performance collagen/bone granule-based scaffolds.
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Affiliation(s)
- Bach Quang Le
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Tuan Chun Tan
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Seong-Baek Lee
- Cellumed CO LTD, 130. Digital-ro, Geumcheon-gu (Gasan-dong, Acetechno tower-9th), Seoul, Republic of Korea
| | - Ju Woong Jang
- Cellumed CO LTD, 130. Digital-ro, Geumcheon-gu (Gasan-dong, Acetechno tower-9th), Seoul, Republic of Korea
| | - Young Sik Kim
- Cellumed CO LTD, 130. Digital-ro, Geumcheon-gu (Gasan-dong, Acetechno tower-9th), Seoul, Republic of Korea
| | - Jung Soo Lee
- Cellumed CO LTD, 130. Digital-ro, Geumcheon-gu (Gasan-dong, Acetechno tower-9th), Seoul, Republic of Korea
| | - Jae Won Choi
- Cellumed CO LTD, 130. Digital-ro, Geumcheon-gu (Gasan-dong, Acetechno tower-9th), Seoul, Republic of Korea
| | - Padmapriya Sathiyanathan
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Victor Nurcombe
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Simon M Cool
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore; Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119288, Singapore.
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18
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Liu Y, Xu Z, Wang Q, Jiang Y, Wang R, Chen S, Zhu J, Zhang Y, Chen J. Selective regulation of RANKL/RANK/OPG pathway by heparan sulfate through the binding with estrogen receptor β in MC3T3-E1 cells. Int J Biol Macromol 2020; 161:1526-1534. [DOI: 10.1016/j.ijbiomac.2020.07.308] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/12/2020] [Accepted: 07/29/2020] [Indexed: 02/09/2023]
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19
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Sefkow-Werner J, Machillot P, Sales A, Castro-Ramirez E, Degardin M, Boturyn D, Cavalcanti-Adam EA, Albiges-Rizo C, Picart C, Migliorini E. Heparan sulfate co-immobilized with cRGD ligands and BMP2 on biomimetic platforms promotes BMP2-mediated osteogenic differentiation. Acta Biomater 2020; 114:90-103. [PMID: 32673751 DOI: 10.1016/j.actbio.2020.07.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 12/27/2022]
Abstract
The chemical and physical properties of the extracellular matrix (ECM) are known to be fundamental for regulating growth factor bioactivity. The role of heparan sulfate (HS), a glycosaminoglycan, and of cell adhesion proteins (containing the cyclic RGD (cRGD) ligands) on bone morphogenetic protein 2 (BMP2)-mediated osteogenic differentiation has not been fully explored. In particular, it is not known whether and how their effects can be potentiated when they are presented in controlled close proximity, as in the ECM. Here, we developed streptavidin platforms to mimic selective aspects of the in vivo presentation of cRGD, HS and BMP2, with a nanoscale-control of their surface density and orientation to study cell adhesion and osteogenic differentiation. We showed that whereas a controlled increase in cRGD surface concentration upregulated BMP2 signaling due to β3 integrin recruitment, silencing either β1 or β3 integrins negatively affected BMP2-mediated phosphorylation of SMAD1/5/9 and alkaline phosphatase expression. Furthermore, the presence of adsorbed BMP2 promoted cellular adhesion at very low cRGD concentrations. Finally, we proved that HS co-immobilized with cRGD both sustained BMP2 signaling and enhanced osteogenic differentiation compared to BMP2 directly immobilized on streptavidin, even with a low cRGD surface concentration. Altogether, our results show that HS facilitated and sustained the synergy between BMP2 and integrin pathways and that the co-immobilization of HS and cRGD peptides optimised BMP2-mediated osteogenic differentiation. Statement of significance The growth factor BMP2 is used to treat large bone defects. Previous studies have shown that the presentation of BMP2 via extracellular matrix molecules, such as heparan sulfate (HS), can upregulate BMP2 signaling. The potential advantages of dose reduction and local specificity have stimulated interest in further investigations into biomimetic approaches. We designed a streptavidin model surface eligible for immobilizing tunable amounts of molecules from the extracellular space, such as HS, adhesion motifs (cyclic RGD) and BMP2. By studying cellular adhesion, BMP2 bioactivity and its osteogenic potential we reveal the combined effect of integrins, HS and BMP2, which contribute in answering fundamental questions regarding cell-matrix interaction.
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20
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Chan SJ, Esposito E, Hayakawa K, Mandaville E, Smith RAA, Guo S, Niu W, Wong PTH, Cool SM, Lo EH, Nurcombe V. Vascular Endothelial Growth Factor 165-Binding Heparan Sulfate Promotes Functional Recovery From Cerebral Ischemia. Stroke 2020; 51:2844-2853. [PMID: 32772683 DOI: 10.1161/strokeaha.119.025304] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND AND PURPOSE Although VEGF165 (vascular endothelial growth factor-165) is able to enhance both angiogenesis and neurogenesis, it also increases vascular permeability through the blood-brain barrier. Heparan sulfate (HS) sugars play important roles in regulating VEGF bioactivity in the pericellular compartment. Here we asked whether an affinity-purified VEGF165-binding HS (HS7) could augment endogenous VEGF activity during stroke recovery without affecting blood-brain barrier function. METHODS Both rat brain endothelial cell line 4 and primary rat neural progenitor cells were used to evaluate the potential angiogenic and neurogenic effects of HS7 in vitro. For in vivo experiments, male Sprague-Dawley rats were subjected to 100 minutes of transient focal cerebral ischemia, then treated after 4 days with either PBS or HS7. One week later, infarct volume, behavioral sequelae, immunohistochemical markers of angiogenesis and neural stem cell proliferation were assessed. RESULTS HS7 significantly enhanced VEGF165-mediated angiogenesis in rat brain endothelial cell line 4 brain endothelial cells, and increased the proliferation and differentiation of primary neural progenitor cells, both via the VEGFR2 (vascular endothelial growth factor receptor 2) pathway. Intracerebroventricular injection of HS7 improved neurological outcome in ischemic rats without changing infarct volumes. Immunostaining of the compromised cerebrum demonstrated increases in collagen IV/Ki67 and nestin/Ki67 after HS7 exposure, consistent with its ability to promote angiogenesis and neurogenesis, without compromising blood-brain barrier integrity. CONCLUSIONS A VEGF-activating glycosaminoglycan sugar, by itself, is able to enhance endogenous VEGF165 activity during the post-ischemic recovery phase of stroke.
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Affiliation(s)
- Su Jing Chan
- Department of Radiology (S.J.C., E.E., K.H., E.M., S.G., E.H.L.), Massachusetts General Hospital, Harvard Medical School, Charlestown.,Institute of Medical Biology, Glycotherapeutics Group, A*STAR (S.J.C., R.A.A.S., S.M.C., V.N.)
| | - Elga Esposito
- Department of Radiology (S.J.C., E.E., K.H., E.M., S.G., E.H.L.), Massachusetts General Hospital, Harvard Medical School, Charlestown
| | - Kazuhide Hayakawa
- Department of Radiology (S.J.C., E.E., K.H., E.M., S.G., E.H.L.), Massachusetts General Hospital, Harvard Medical School, Charlestown.,Department of Neurology (K.H., E.H.L.), Massachusetts General Hospital, Harvard Medical School, Charlestown
| | - Emiri Mandaville
- Department of Radiology (S.J.C., E.E., K.H., E.M., S.G., E.H.L.), Massachusetts General Hospital, Harvard Medical School, Charlestown
| | - Raymond A A Smith
- Institute of Medical Biology, Glycotherapeutics Group, A*STAR (S.J.C., R.A.A.S., S.M.C., V.N.)
| | - Shuzhen Guo
- Department of Radiology (S.J.C., E.E., K.H., E.M., S.G., E.H.L.), Massachusetts General Hospital, Harvard Medical School, Charlestown
| | - Wanting Niu
- Tissue Engineering Laboratories, VA Boston Healthcare System, MA (W.N.)
| | | | - Simon M Cool
- Institute of Medical Biology, Glycotherapeutics Group, A*STAR (S.J.C., R.A.A.S., S.M.C., V.N.)
| | - Eng H Lo
- Department of Radiology (S.J.C., E.E., K.H., E.M., S.G., E.H.L.), Massachusetts General Hospital, Harvard Medical School, Charlestown.,Department of Neurology (K.H., E.H.L.), Massachusetts General Hospital, Harvard Medical School, Charlestown
| | - Victor Nurcombe
- Institute of Medical Biology, Glycotherapeutics Group, A*STAR (S.J.C., R.A.A.S., S.M.C., V.N.)
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21
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Ling L, Ren X, Cao X, Hassan ABM, Mah S, Sathiyanathan P, Smith RAA, Tan CLL, Eio M, Samsonraj RM, van Wijnen AJ, Raghunath M, Nurcombe V, Hui JH, Cool SM. Enhancing the Efficacy of Stem Cell Therapy with Glycosaminoglycans. Stem Cell Reports 2020; 14:105-121. [PMID: 31902704 PMCID: PMC6962655 DOI: 10.1016/j.stemcr.2019.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 12/01/2019] [Accepted: 12/02/2019] [Indexed: 12/16/2022] Open
Abstract
Human mesenchymal stem cell (hMSC) therapy offers significant potential for osteochondral regeneration. Such applications require their ex vivo expansion in media frequently supplemented with fibroblast growth factor 2 (FGF2). Particular heparan sulfate (HS) fractions stabilize FGF2-FGF receptor complexes. We show that an FGF2-binding HS variant (HS8) accelerates the expansion of freshly isolated bone marrow hMSCs without compromising their naivety. Importantly, the repair of osteochondral defects in both rats and pigs is improved after treatment with HS8-supplemented hMSCs (MSCHS8), when assessed histologically, biomechanically, or by MRI. Thus, supplementing hMSC culture media with an HS variant that targets endogenously produced FGF2 allows the elimination of exogenous growth factors that may adversely affect their therapeutic potency. An FGF2-binding heparan sulfate (HS8) accelerates the ex vivo expansion of hMSCs hMSCs expanded with HS8 maintain stem cell characteristics and potency HS8-expanded hMSCs improve osteochondral regeneration in animal models HS8 is an effective bio-additive for the scale up of highly potent hMSCs
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Affiliation(s)
- Ling Ling
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Xiafei Ren
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore
| | - Xue Cao
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore
| | - Afizah Binte Mohd Hassan
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore
| | - Sophia Mah
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Padmapriya Sathiyanathan
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Raymond A A Smith
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Clarissa L L Tan
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Michelle Eio
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Rebekah M Samsonraj
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Andre J van Wijnen
- Department of Orthopaedic Surgery & Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Michael Raghunath
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore
| | - Victor Nurcombe
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - James H Hui
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore.
| | - Simon M Cool
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore; Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore.
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22
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Chopra P, Logun MT, White EM, Lu W, Locklin J, Karumbaiah L, Boons GJ. Fully Synthetic Heparan Sulfate-Based Neural Tissue Construct That Maintains the Undifferentiated State of Neural Stem Cells. ACS Chem Biol 2019; 14:1921-1929. [PMID: 31389687 DOI: 10.1021/acschembio.9b00401] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Heparin and heparan sulfate (HS) are attractive components for constructing biomaterials due to their ability to recruit and regulate the activity of growth factors. The structural and functional heterogeneity of naturally derived heparin and HS is, however, an impediment for the preparation of biomaterials for regenerative medicine. To address this problem, we have prepared hydrogels modified by well-defined synthetic HS-derived disaccharides. Human induced pluripotent cell-derived neural stem cells (HIP-NSCs) encapsulated in a polyethylene glycol-based hydrogel modified by a pendent HS disaccharide that is a known ligand for fibroblast growth factor-2 (FGF-2) exhibited a significant increase in proliferation and self-renewal. This observation is important because evidence is emerging that undifferentiated stems cells can yield significant therapeutic benefits via their paracrine signaling mechanisms. Our data indicate that the HS disaccharide protects FGF-2, which has a very short biological half-live, from degradation. It is anticipated that, by careful selection of a synthetic HS oligosaccharide, it will be possible to control retention and release of specific growth factor, which in turn will provide control over cell fate.
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Affiliation(s)
- Pradeep Chopra
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
| | - Meghan T. Logun
- Regenerative Bioscience Center, ADS Complex, University of Georgia, 422 River Road, Athens, Georgia 30602, United States
| | - Evan M. White
- New Material Institute, University of Georgia, 220 Riverbend Road, Athens, Georgia 30602, United States
| | - Weigang Lu
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States
| | - Jason Locklin
- New Material Institute, University of Georgia, 220 Riverbend Road, Athens, Georgia 30602, United States
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States
| | - Lohitash Karumbaiah
- Regenerative Bioscience Center, ADS Complex, University of Georgia, 422 River Road, Athens, Georgia 30602, United States
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Bijvoet Center for Biomolecular Research, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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23
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Houlton J, Abumaria N, Hinkley SFR, Clarkson AN. Therapeutic Potential of Neurotrophins for Repair After Brain Injury: A Helping Hand From Biomaterials. Front Neurosci 2019; 13:790. [PMID: 31427916 PMCID: PMC6688532 DOI: 10.3389/fnins.2019.00790] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 07/15/2019] [Indexed: 12/17/2022] Open
Abstract
Stroke remains the leading cause of long-term disability with limited options available to aid in recovery. Significant effort has been made to try and minimize neuronal damage following stroke with use of neuroprotective agents, however, these treatments have yet to show clinical efficacy. Regenerative interventions have since become of huge interest as they provide the potential to restore damaged neural tissue without being limited by a narrow therapeutic window. Neurotrophins, such as brain-derived neurotrophic factor (BDNF), and their high affinity receptors are actively produced throughout the brain and are involved in regulating neuronal activity and normal day-to-day function. Furthermore, neurotrophins are known to play a significant role in both protection and recovery of function following neurodegenerative diseases such as stroke and traumatic brain injury (TBI). Unfortunately, exogenous administration of these neurotrophins is limited by a lack of blood-brain-barrier (BBB) permeability, poor half-life, and rapid degradation. Therefore, we have focused this review on approaches that provide a direct and sustained neurotrophic support using pharmacological therapies and mimetics, physical activity, and potential drug delivery systems, including discussion around advantages and limitations for use of each of these systems. Finally, we discuss future directions of biomaterial drug-delivery systems, including the incorporation of heparan sulfate (HS) in conjunction with neurotrophin-based interventions.
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Affiliation(s)
- Josh Houlton
- Brain Health Research Centre, Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Nashat Abumaria
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Brain Science, Fudan University, Shanghai, China
- Department of Laboratory Animal Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Simon F. R. Hinkley
- The Ferrier Research Institute, Victoria University of Wellington, Petone, New Zealand
| | - Andrew N. Clarkson
- Brain Health Research Centre, Department of Anatomy, University of Otago, Dunedin, New Zealand
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24
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Qi H, Yang L, Li X, Sun X, Zhao J, Hou X, Li Z, Yuan X, Cui Z, Yang X. Systemic administration of enzyme-responsive growth factor nanocapsules for promoting bone repair. Biomater Sci 2019; 7:1675-1685. [PMID: 30742145 DOI: 10.1039/c8bm01632a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Accelerating the healing of bone fractures by local delivery of growth factors possessing osteoinductive activity has been extensively demonstrated. Unfortunately, for some complex clinical fractures, such as osteoporotic vertebral compression fracture, it is not possible to adopt such a strategy because of access restrictions. Systemic administration of growth factors is considered to be an appropriate alternative method due to its easy operability and precise spatiotemporal compatibility at fracture sites. But this therapy method was hampered by the poor in vivo stability, inefficient distribution at the fracture site and potential side effects of growth factors. To address these challenges, we conceived a systemic delivery platform of growth factors based on nanocapsules, taking advantage of the unique physiological character of bone fracture, i.e., the malformed blood vessels and the over-expression of matrix metalloproteinases (MMPs). In this work, bone morphogenetic protein-2 (BMP-2), 2-(methacryloyloxy)ethyl phosphorylcholine (MPC) and the bisacryloylated VPLGVRTK peptide were respectively used as the model growth factor, monomer, and MMP-cleavable crosslinker. Nanocapsules were formed by in situ free radical polymerization on the surface of BMP-2 with MPC and peptides. The structure and function of BMP-2 were well maintained during the preparation process. BMP-2 nanocapsules (n(BMP-2)) were of uniform small size (∼30 nm) possessing a long circulation time (half-life is ∼48 h) and could be passively targeted to the fracture site through malformed blood vessels after systemic administration. Once accumulated at the fracture site, the shells of nanocapsules could be degraded by MMP and thus BMP-2 was released. Animal experiments proved that n(BMP-2) showed a better ability of bone repair than native BMP-2. In addition, n(BMP-2) showed a much lower inflammatory irritation. The results demonstrated that the systemic administration of growth factor nanocapsules could enhance their in vivo stability and fracture site delivery efficiency, realizing the efficient repair of a bone fracture. This rational delivery system may expand the bone repair types which can be administered with growth factors. Furthermore, the concept of taking advantage of the malformed vascular structure to deliver drugs potentially inspires researchers for the therapy of other diseases, especially sudden disease (such as cerebral hemorrhage).
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Affiliation(s)
- Hongzhao Qi
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.
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Nurcombe V, Ling L, Hondermarck H, Cool SM, Smith RAA. Bringing Heparan Sulfate Glycomics Together with Proteomics for the Design of Novel Therapeutics: A Historical Perspective. Proteomics 2019; 19:e1800466. [PMID: 31197945 DOI: 10.1002/pmic.201800466] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/31/2019] [Indexed: 01/29/2023]
Abstract
Increasing knowledge of how peptides bind saccharides, and of how saccharides bind peptides, is starting to revolutionize understanding of cell-extracellular matrix relationships. Here, a historical perspective is taken of the relationship between heparan sulfate glycosaminoglycans and how they interact with peptide growth factors in order to both drive and modulate signaling through the appropriate cognate receptors. Such knowledge is guiding the preparation of targeted sugar mimetics that will impact the treatment of many different kinds of diseases, including cancer.
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Affiliation(s)
- Victor Nurcombe
- Institute of Medical Biology, Glycotherapeutics Group, A*STAR, 138648, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technology University-Imperial College London, 636921, Singapore
| | - Ling Ling
- Institute of Medical Biology, Glycotherapeutics Group, A*STAR, 138648, Singapore
| | - Hubert Hondermarck
- School of Biomedical Sciences and Pharmacy, University of Newcastle, NSW, 2308, Australia
| | - Simon M Cool
- Institute of Medical Biology, Glycotherapeutics Group, A*STAR, 138648, Singapore.,Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 119228, Singapore
| | - Raymond A A Smith
- Institute of Medical Biology, Glycotherapeutics Group, A*STAR, 138648, Singapore
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Wada H, Ikoma K, Oka Y, Nishida A, Onishi O, Kim WC, Tanida T, Yamada S, Matsuda KI, Tanaka M, Kubo T. Status of growth plates can be monitored by MRI. J Magn Reson Imaging 2019; 51:133-143. [PMID: 31044458 DOI: 10.1002/jmri.26771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 04/19/2019] [Accepted: 04/19/2019] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Growth plate injuries and disorders cause premature closure, resulting in shortened or deformed limbs. Quantitative assessment by MRI might monitor the status of the growth plate and may assist in the prediction of these deformations. PURPOSE To investigate whether the status of the growth plate can be monitored by quantitative evaluation using MRI of the noninjured region of the growth plate in a physeal injury model. STUDY TYPE Prospective, longitudinal. ANIMAL MODEL A 3.0-mm drill was used to create an injury to the central region of the right proximal tibial growth plate in 5-week-old male Japanese white rabbits (N = 18). The left tibia served as the control. FIELD STRENGTH/SEQUENCE 7.04T, T2 -weighted imaging, diffusion-weighted imaging. ASSESSMENT Eight of 18 rabbits underwent MRI, proton density-weighted imaging, and T2 -weighted and diffusion-weighted imaging. T2 and apparent diffusion coefficient (ADC) maps were generated for each image. The growth plate height and the T2 and ADC values of the noninjured region were measured. Two rabbits were sacrificed at 2, 4, 6, 8, and 10 weeks postinjury. Proximal tibial bones were evaluated using microcomputed tomography, histological, and immunohistological methods. STATISTICAL TESTS Data were compared using repeated-measures analysis of variance followed by Tukey post-hoc multiple comparison. RESULTS Growth plate height decreased at 10 weeks postinjury (P = 0.018) on the injured side. T2 values were greater at 2 weeks postinjury (P = 0.0478) and decreased at 8 and 10 weeks (P = 0.0226, P = 0.0470, respectively) on the injured side. ADC values increased at 6 weeks on the lateral side (P = 0.0304) and decreased at 8 weeks and 10 weeks postinjury (P < 0.01) on the medial and injured sides, respectively. DATA CONCLUSION Quantitative MRI can help monitor the status of the growth plate and capture its changes early. LEVEL OF EVIDENCE 1 Technical Efficacy Stage: 3 J. Magn. Reson. Imaging 2020;51:133-143.
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Affiliation(s)
- Hiroaki Wada
- Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazuya Ikoma
- Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshinobu Oka
- Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Atsushi Nishida
- Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Okihiro Onishi
- Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Wook-Choel Kim
- Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takashi Tanida
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Shunji Yamada
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ken-Ichi Matsuda
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Masaki Tanaka
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Toshikazu Kubo
- Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Rindone AN, Kachniarz B, Achebe CC, Riddle RC, O'Sullivan AN, Dorafshar AH, Grayson WL. Heparin-Conjugated Decellularized Bone Particles Promote Enhanced Osteogenic Signaling of PDGF-BB to Adipose-Derived Stem Cells in Tissue Engineered Bone Grafts. Adv Healthc Mater 2019; 8:e1801565. [PMID: 30941920 DOI: 10.1002/adhm.201801565] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 02/17/2019] [Indexed: 12/29/2022]
Abstract
Adipose-derived stem cells (ASCs) are a promising cell source for regenerating critical-sized craniofacial bone defects, but their clinical use is limited due to the supraphysiological levels of bone morphogenetic protein-2 required to induce bone formation in large grafts. It has been recently reported that platelet-derived growth factor-BB (PDGF) directly enhances the osteogenesis of ASCs when applied at physiological concentrations. In this study, a biomimetic delivery system that tethers PDGF to decellularized bone matrix (DCB) is developed to enhance osteogenic signaling in bone grafts by colocalizing PDGF-extracellular matrix cues. Heparin is conjugated to DCB particles (HC-DCB) to promote sustained binding of PDGF via electrostatic interactions. HC-DCB particles bind to PDGF with >99% efficiency and release significantly less PDGF over 21 days compared to nonconjugated DCB particles (1.1% vs 22.8%). HC-DCB-PDGF signaling in polycaprolactone (PCL)-fibrin grafts promotes >40 µg Ca2+ µg-1 DNA deposition by ASCs during in vitro osteogenic culture compared to grafts without HC-DCB or PDGF. Furthermore, more bone formation is observed in grafts with HC-DCB-PDGF at 12 weeks following implantation of grafts into murine critical-sized calvarial defects. Collectively, these results demonstrate that HC-DCB enhances the osteogenic signaling of PDGF to ASCs and may be applied to promote ASC-mediated bone regeneration in critical-sized defects.
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Affiliation(s)
- Alexandra N. Rindone
- Translational Tissue Engineering CenterJohns Hopkins University School of Medicine Baltimore MD 21287 USA
- Department of Biomedical EngineeringJohns Hopkins University School of Medicine Baltimore MD 21205 USA
| | - Bartlomiej Kachniarz
- Department of Plastic and Reconstructive SurgeryJohns Hopkins University School of Medicine Baltimore MD 21205 USA
| | - Chukwuebuka C. Achebe
- Department of Biomedical EngineeringJohns Hopkins University School of Medicine Baltimore MD 21205 USA
| | - Ryan C. Riddle
- Department of Orthopaedic SurgeryJohns Hopkins University School of Medicine Baltimore MD 21205 USA
| | - Aine N. O'Sullivan
- Translational Tissue Engineering CenterJohns Hopkins University School of Medicine Baltimore MD 21287 USA
| | - Amir H. Dorafshar
- Department of Plastic and Reconstructive SurgeryJohns Hopkins University School of Medicine Baltimore MD 21205 USA
| | - Warren L. Grayson
- Translational Tissue Engineering CenterJohns Hopkins University School of Medicine Baltimore MD 21287 USA
- Department of Biomedical EngineeringJohns Hopkins University School of Medicine Baltimore MD 21205 USA
- Department of Materials Science and EngineeringJohns Hopkins University Baltimore MD 21218 USA
- Institute for NanoBioTechnologyJohns Hopkins University Baltimore MD 21218 USA
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Lim ZXH, Rai B, Tan TC, Ramruttun AK, Hui JH, Nurcombe V, Teoh SH, Cool SM. Autologous bone marrow clot as an alternative to autograft for bone defect healing. Bone Joint Res 2019; 8:107-117. [PMID: 30997036 PMCID: PMC6444063 DOI: 10.1302/2046-3758.83.bjr-2018-0096.r1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Objectives Long bone defects often require surgical intervention for functional restoration. The ‘gold standard’ treatment is autologous bone graft (ABG), usually from the patient’s iliac crest. However, autograft is plagued by complications including limited supply, donor site morbidity, and the need for an additional surgery. Thus, alternative therapies are being actively investigated. Autologous bone marrow (BM) is considered as a candidate due to the presence of both endogenous reparative cells and growth factors. We aimed to compare the therapeutic potentials of autologous bone marrow aspirate (BMA) and ABG, which has not previously been done. Methods We compared the efficacy of coagulated autologous BMA and ABG for the repair of ulnar defects in New Zealand White rabbits. Segmental defects (14 mm) were filled with autologous clotted BM or morcellized autograft, and healing was assessed four and 12 weeks postoperatively. Harvested ulnas were subjected to radiological, micro-CT, histological, and mechanical analyses. Results Comparable results were obtained with autologous BMA clot and ABG, except for the quantification of new bone by micro-CT. Significantly more bone was found in the ABG-treated ulnar defects than in those treated with autologous BMA clot. This is possibly due to the remnants of necrotic autograft fragments that persisted within the healing defects at week 12 post-surgery. Conclusion As similar treatment outcomes were achieved by the two strategies, the preferred treatment would be one that is associated with a lower risk of complications. Hence, these results demonstrate that coagulated BMA can be considered as an alternative autogenous therapy for long bone healing. Cite this article: Z. X. H. Lim, B. Rai, T. C. Tan, A. K. Ramruttun, J. H. Hui, V. Nurcombe, S. H. Teoh, S. M. Cool. Autologous bone marrow clot as an alternative to autograft for bone defect healing. Bone Joint Res 2019;8:107–117. DOI: 10.1302/2046-3758.83.BJR-2018-0096.R1.
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Affiliation(s)
- Z X H Lim
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore
| | - B Rai
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore; Science and Maths Cluster, Singapore University of Technology & Design (SUTD), Singapore
| | - T C Tan
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore
| | - A K Ramruttun
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - J H Hui
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - V Nurcombe
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University-Imperial College, Singapore
| | - S H Teoh
- Lee Kong Chian School of Medicine, Nanyang Technological University-Imperial College, Singapore; School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - S M Cool
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore; Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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29
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Lee JH, Luo X, Ren X, Tan TC, Smith RAA, Swaminathan K, Sekar S, Bhakoo K, Nurcombe V, Hui JH, Cool SM. A Heparan Sulfate Device for the Regeneration of Osteochondral Defects. Tissue Eng Part A 2018; 25:352-363. [PMID: 30351222 DOI: 10.1089/ten.tea.2018.0171] [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] [Indexed: 12/11/2022] Open
Abstract
IMPACT STATEMENT Repairing damaged joint cartilage remains a significant challenge. Treatment involving microfracture, tissue grafting, or cell therapy provides some benefit, but seldom regenerates lost articular cartilage. Providing a point-of-care solution that is cell and tissue free has the potential to transform orthopedic treatment for such cases. Glycosaminoglycans such as heparan sulfate (HS) are well suited for this purpose because they provide a matrix that enhances the prochondrogenic activities of growth factors normally found at sites of articular damage. In this study, we show the potential of a novel HS device, which is free of exogenous cells or growth factors, in regenerating osteochondral defects.
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Affiliation(s)
- Jonathan H Lee
- 1 NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Centre for Life Sciences (CeLS), Singapore.,2 Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Xiaoman Luo
- 2 Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Xiafei Ren
- 3 Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Tuan Chun Tan
- 2 Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Raymond A A Smith
- 2 Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore
| | | | - Sakthivel Sekar
- 5 Translational Molecular Imaging Group, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Kishore Bhakoo
- 5 Translational Molecular Imaging Group, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Victor Nurcombe
- 2 Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore.,6 Lee Kong Chian School of Medicine, Nanyang Technological University-Imperial College, Singapore
| | - James H Hui
- 3 Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Simon M Cool
- 2 Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore.,3 Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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30
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Le BQ, Rai B, Hui Lim ZX, Tan TC, Lin T, Lin Lee JJ, Murali S, Teoh SH, Nurcombe V, Cool SM. A polycaprolactone-β-tricalcium phosphate-heparan sulphate device for cranioplasty. J Craniomaxillofac Surg 2018; 47:341-348. [PMID: 30579746 DOI: 10.1016/j.jcms.2018.11.013] [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: 08/15/2018] [Revised: 10/09/2018] [Accepted: 11/12/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Cranioplasty is a surgical procedure used to treat a bone defect or deformity in the skull. To date, there is little consensus on the standard-of-care for graft materials used in such a procedure. Graft materials must have sufficient mechanical strength to protect the underlying brain as well as the ability to integrate and support new bone growth. Also, the ideal graft material should be individually customized to the contours of the defect to ensure a suitable aesthetic outcome for the patient. PURPOSE Customized 3D-printed scaffolds comprising of polycaprolactone-β-tricalcium phosphate (PCL-TCP) have been developed with mechanical properties suitable for cranioplasty. Osteostimulation of PCL-TCP was enhanced through the addition of a bone matrix-mimicking heparan sulphate glycosaminoglycan (HS3) with increased affinity for bone morphogenetic protein-2 (BMP-2). Efficacy of this PCL-TCP/HS3 combination device was assessed in a rat critical-sized calvarial defect model. METHOD Critical-sized defects (5 mm) were created in both parietal bones of 19 Sprague Dawley rats (Male, 450-550 g). Each cranial defect was randomly assigned to 1 of 4 treatment groups: (1) A control group consisting of PCL-TCP/Fibrin alone (n = 5); (2) PCL-TCP/Fibrin-HSft (30 μg) (n = 6) (HSft is the flow-through during HS3 isolation that has reduced affinity for BMP-2); (3) PCL-TCP/Fibrin-HS3 (5 μg) (n = 6); (4) PCL-TCP/Fibrin-HS3 (30 μg) (n = 6). Scaffold integration and bone formation was evaluated 12-weeks post implantation by μCT and histology. RESULTS Treatment with PCL-TCP/Fibrin alone (control) resulted in 23.7% ± 1.55% (BV/TV) of the calvarial defect being filled with new bone, a result similar to treatment with PCL-TCP/Fibrin scaffolds containing either HSft or HS3 (5 μg). At increased amounts of HS3 (30 μg), enhanced bone formation was evident (BV/TV = 38.6% ± 9.38%), a result 1.6-fold higher than control. Further assessment by 2D μCT and histology confirmed the presence of enhanced bone formation and scaffold integration with surrounding host bone only when scaffolds contained sufficient bone matrix-mimicking HS3. CONCLUSION Enhancing the biomimicry of devices using a heparan sulphate with increased affinity to BMP-2 can serve to improve the performance of PCL-TCP scaffolds and provides a suitable treatment for cranioplasty.
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Affiliation(s)
- Bach Quang Le
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648
| | - Bina Rai
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648
| | - Zophia Xue Hui Lim
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648
| | - Tuan Chun Tan
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648
| | - Tingxuan Lin
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648
| | - Jaslyn Jie Lin Lee
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648
| | - Sadasivam Murali
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648
| | - Swee Hin Teoh
- Centre for Bone Tissue Engineering, School of Chemical and Biomedical Engineering, Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 62 Nanyang Drive, 637459, Singapore
| | - Victor Nurcombe
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648
| | - Simon McKenzie Cool
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648; Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119288.
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31
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Di Vito A, Giudice A, Chiarella E, Malara N, Bennardo F, Fortunato L. In Vitro Long-Term Expansion and High Osteogenic Potential of Periodontal Ligament Stem Cells: More Than a Mirage. Cell Transplant 2018; 28:129-139. [PMID: 30369260 PMCID: PMC6322134 DOI: 10.1177/0963689718807680] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The periodontal ligament displays a reservoir of mesenchymal stem cells which can account for periodontal regeneration. Despite the numerous studies directed at the definition of optimal culture conditions for long-term expansion of periodontal ligament stem cells (PDLSCs), no consensus has been reached as to what is the ideal protocol. The aim of the present study was to determine the optimal medium formulation for long-term expansion and stemness maintenance of PDLSCs, in order to obtain a sufficient number of cells for therapeutic approaches. For this purpose, the effects of three different culture medium formulations were evaluated on PDLSCs obtained from three periodontal ligament samples of the same patient: minimum essential medium Eagle, alpha modification (α-MEM), Dulbecco's modified Eagle's medium (DMEM), both supplemented with 10% fetal bovine serum (FBS), and a new medium formulation, Ham's F12 medium, supplemented with 10% FBS, heparin 0.5 U/ml, epidermal growth factor (EGF) 50 ng/ml, fibroblast growth factor (FGF) 25 ng/ml, and bovine serum albumin (BSA) 1% (enriched Ham's F12 medium; EHFM). PDLSCs grown in EHFM displayed a higher PE-CD73 mean fluorescence intensity compared with cells maintained in α-MEM and DMEM, even at later passages. Cells maintained in EHFM displayed an increased population doubling and a reduced population doubling time compared with cells grown in DMEM or α-MEM. α-MEM, DMEM and EHFM with added dexamethasone, 2-phospho-L-ascorbic acid, and β-glycerophosphate were all able to promote alkaline phosphatase activity; however, no calcium deposition was detected in PDLSCs cultured in EHFM-differentiation medium. When EHFM-, α-MEM- and DMEM-expanded PDLSCs were transferred to a commercial culture medium for the osteogenesis, mineralization became much more evident in confluent monolayers of EHFM-expanded PDLSCs compared with DMEM and α-MEM. The results suggest EHFM is the optimal medium formulation for growth and stemness maintenance of primary PDLSCs. Moreover, EHFM confers higher osteogenic potential to PDLSCs compared with cells maintained in the other culture media. Overall, the results of the present work confirmed the advantages of using EHFM for long-term expansion of mesenchymal cells in vitro and the preservation of high osteogenic potential.
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Affiliation(s)
- Anna Di Vito
- 1 Department of Clinical and Experimental Medicine, University Magna Graecia of Catanzaro, Campus Universitario "Salvatore Venuta" Viale Europa - Loc. Germaneto, Catanzaro, Italy
| | - Amerigo Giudice
- 2 Department of Health Science, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Emanuela Chiarella
- 1 Department of Clinical and Experimental Medicine, University Magna Graecia of Catanzaro, Campus Universitario "Salvatore Venuta" Viale Europa - Loc. Germaneto, Catanzaro, Italy
| | - Natalia Malara
- 1 Department of Clinical and Experimental Medicine, University Magna Graecia of Catanzaro, Campus Universitario "Salvatore Venuta" Viale Europa - Loc. Germaneto, Catanzaro, Italy
| | - Francesco Bennardo
- 2 Department of Health Science, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Leonzio Fortunato
- 2 Department of Health Science, University Magna Graecia of Catanzaro, Catanzaro, Italy
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Smith RAA, Murali S, Rai B, Lu X, Lim ZXH, Lee JJL, Nurcombe V, Cool SM. Minimum structural requirements for BMP-2-binding of heparin oligosaccharides. Biomaterials 2018; 184:41-55. [PMID: 30205243 DOI: 10.1016/j.biomaterials.2018.08.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/24/2018] [Accepted: 08/27/2018] [Indexed: 12/27/2022]
Abstract
Bone morphogenetic proteins (BMPs) are essential during tissue repair and remodeling after injury. Glycosaminoglycan (GAG) sugars are known to enhance BMP activity in vitro and in vivo; here the interactions of BMP-2 with various glycosaminoglycan classes were compared and shown to be selective for heparin over other comparable saccharides. The minimal chain lengths and specific sulfate moieties required for heparin-derived oligosaccharide binding to BMP-2, and the ability of such oligosaccharides to promote BMP-2-induced osteogenic differentiation in vitro were then determined. BMP-2 could bind to heparin hexasaccharides (dp6) and octasaccharides (dp8), but decasaccharides (dp10) were the minimum chain length required for both efficient binding of BMP-2 and consequent heparin-dependent cell responses. N-sulfation is the most important, and 6-O-sulfation moderately important for BMP-2 binding and activity, whereas 2-O-sulfation was much less critical. Bone formation assays in vivo further confirmed that dp10, N-sulfated heparin oligosaccharides were the minimal requirement for effective enhancement of BMP-2-induced bone formation. Such information is necessary for the rational design of the next generations of heparan-based devices for bone tissue repair.
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Affiliation(s)
- Raymond A A Smith
- Glycotherapeutics Group, Institute of Medical Biology, 8A Biomedical Grove, #06-06 Immunos, 138648, Singapore
| | - Sadasivam Murali
- Glycotherapeutics Group, Institute of Medical Biology, 8A Biomedical Grove, #06-06 Immunos, 138648, Singapore
| | - Bina Rai
- Glycotherapeutics Group, Institute of Medical Biology, 8A Biomedical Grove, #06-06 Immunos, 138648, Singapore
| | - Xiaohua Lu
- Glycotherapeutics Group, Institute of Medical Biology, 8A Biomedical Grove, #06-06 Immunos, 138648, Singapore
| | - Zophia Xue Hui Lim
- Glycotherapeutics Group, Institute of Medical Biology, 8A Biomedical Grove, #06-06 Immunos, 138648, Singapore
| | - Jaslyn J L Lee
- Glycotherapeutics Group, Institute of Medical Biology, 8A Biomedical Grove, #06-06 Immunos, 138648, Singapore
| | - Victor Nurcombe
- Glycotherapeutics Group, Institute of Medical Biology, 8A Biomedical Grove, #06-06 Immunos, 138648, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University-Imperial College London, Singapore
| | - Simon M Cool
- Glycotherapeutics Group, Institute of Medical Biology, 8A Biomedical Grove, #06-06 Immunos, 138648, Singapore; Dept. of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 119074, Singapore.
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Smith RA, Chua R, Carnachan SM, Tan CL, Sims IM, Hinkley SF, Nurcombe V, Cool SM. Retention of the Structure and Function of Heparan Sulfate Biomaterials After Gamma Irradiation. Tissue Eng Part A 2018; 24:729-739. [DOI: 10.1089/ten.tea.2017.0263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Raymond A.A. Smith
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore
| | - R.J.E. Chua
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore
| | - Susan M. Carnachan
- The Ferrier Research Institute, Victoria University of Wellington, Lower Hutt, New Zealand
| | - Clarissa L.L. Tan
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore
| | - Ian M. Sims
- The Ferrier Research Institute, Victoria University of Wellington, Lower Hutt, New Zealand
| | - Simon F.R. Hinkley
- The Ferrier Research Institute, Victoria University of Wellington, Lower Hutt, New Zealand
| | - Victor Nurcombe
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University-Imperial College London, Singapore
| | - Simon M. Cool
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research, Singapore
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Bhakta G, Ekaputra AK, Rai B, Abbah SA, Tan TC, Le BQ, Chatterjea A, Hu T, Lin T, Arafat MT, van Wijnen AJ, Goh J, Nurcombe V, Bhakoo K, Birch W, Xu L, Gibson I, Wong HK, Cool SM. Fabrication of polycaprolactone-silanated β-tricalcium phosphate-heparan sulfate scaffolds for spinal fusion applications. Spine J 2018; 18:818-830. [PMID: 29269312 DOI: 10.1016/j.spinee.2017.12.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 11/08/2017] [Accepted: 12/11/2017] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Interbody spinal fusion relies on the use of external fixation and the placement of a fusion cage filled with graft materials (scaffolds) without regard for their mechanical performance. Stability at the fusion site is instead reliant on fixation hardware combined with a selected cage. Ideally, scaffolds placed into the cage should both support the formation of new bone and contribute to the mechanical stability at the fusion site. PURPOSE We recently developed a scaffold consisting of silane-modified PCL-TCP (PCL-siTCP) with mechanical properties that can withstand the higher loads generated in the spine. To ensure the scaffold more closely mimicked the bone matrix, we incorporated collagen (Col) and a heparan sulfate glycosaminoglycan sugar (HS3) with increased affinity for heparin-binding proteins such as bone morphogenetic protein-2 (BMP-2). The osteostimulatory characteristic of this novel device delivering exogenous BMP2 was assessed in vitro and in vivo as a prelude to future spinal fusion studies with this device. STUDY DESIGN/SETTING A combination of cell-free assays (BMP2 release), progenitor cell-based assays (BMP2 bioactivity, cell proliferation and differentiation), and rodent ectopic bone formation assays was used to assess the osteostimulatory characteristics of the PCL-siTCP-based scaffolds. MATERIALS AND METHODS Freshly prepared rat mesenchymal stem cells were used to determine reparative cell proliferation and differentiation on the PCL-siTCP-based scaffolds over a 28-day period in vitro. The bioactivity of BMP2 released from the scaffolds was assessed on progenitor cells over a 28-day period using ALP activity assays and release kinetics as determined by enzyme-linked immunosorbent assay. For ectopic bone formation, intramuscular placement of scaffolds into Sprague Dawley rats (female, 4 weeks old, 120-150 g) was achieved in five animals, each receiving four treatments randomized for location along the limb. The four groups tested were (1) PCL-siTCP/Col (5-mm diameter×1-mm thickness), PCL-siTCP/Col/BMP2 (5 µg), (3) PCL-siTCP/Col/HS3 (25 µg), and (4) PCL-siTCP/Col/HS3/BMP2 (25 and 5 µg, respectively). Bone formation was evaluated at 8 weeks post implantation by microcomputed tomography (µCT) and histology. RESULTS Progenitor cell-based assays (proliferation, mRNA transcripts, and ALP activity) confirmed that BMP2 released from PCL-siTCP/Col/HS3 scaffolds increased ALP expression and mRNA levels of the osteogenic biomarkers Runx2, Col1a2, ALP, and bone gla protein-osteocalcin compared with devices without HS3. When the PCL-siTCP/Col/HS3/BMP2 scaffolds were implanted into rat hamstring muscle, increased bone formation (as determined by two-dimensional and three-dimensional µCTs and histologic analyses) was observed compared with scaffolds lacking BMP2. More consistent increases in the amount of ectopic bone were observed for the PCL-siTCP/Col/HS3/BMP2 implants compared with PCL-siTCP/Col/BMP2. Also, increased mineralizing tissue within the pores of the scaffold was seen with modified-tetrachrome histology, a result confirmed by µCT, and a modest but detectable increase in both the number and the thickness of ectopic bone structures were observed with the PCL-siTCP/Col/HS3/BMP2 implants. CONCLUSIONS The combination of PCL-siTCP/Col/HS3/BMP2 thus represents a promising avenue for further development as a bone graft alternative for spinal fusion surgery.
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Affiliation(s)
- Gajadhar Bhakta
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Andrew K Ekaputra
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Bina Rai
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Sunny A Abbah
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Rd, Singapore 119288, Singapore
| | - Tuan Chun Tan
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Bach Quang Le
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Anindita Chatterjea
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Tao Hu
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Rd, Singapore 119288, Singapore
| | - Tingxuan Lin
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - M Tarik Arafat
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1 Block EA, 07-08, Singapore 117576, Singapore
| | - Andre J van Wijnen
- Department of Orthopedic Surgery, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - James Goh
- Department of Biomedical Engineering, National University of Singapore, 4 Engineering Drive 3, E4 #04-08, Singapore 117583, Singapore
| | - Victor Nurcombe
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Kishore Bhakoo
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Rd, Singapore 119288, Singapore; Singapore Bioimaging Consortium, 11 Biopolis Way, #01-02 Helios, Singapore 138667, Singapore
| | - William Birch
- Institute of Materials Research & Engineering, #08-03, 2 Fusionopolis Way, Innovis, 138634, Singapore
| | - Li Xu
- Institute of Materials Research & Engineering, #08-03, 2 Fusionopolis Way, Innovis, 138634, Singapore
| | - Ian Gibson
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1 Block EA, 07-08, Singapore 117576, Singapore
| | - Hee-Kit Wong
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Rd, Singapore 119288, Singapore
| | - Simon M Cool
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore; Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Rd, Singapore 119288, Singapore.
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Rnjak‐Kovacina J, Tang F, Whitelock JM, Lord MS. Glycosaminoglycan and Proteoglycan-Based Biomaterials: Current Trends and Future Perspectives. Adv Healthc Mater 2018; 7:e1701042. [PMID: 29210510 DOI: 10.1002/adhm.201701042] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/18/2017] [Indexed: 12/18/2022]
Abstract
Proteoglycans and their glycosaminoglycans (GAG) are essential for life as they are responsible for orchestrating many essential functions in development and tissue homeostasis, including biophysical properties and roles in cell signaling and extracellular matrix assembly. In an attempt to capture these biological functions, a range of biomaterials are designed to incorporate off-the-shelf GAGs, typically isolated from animal sources, for tissue engineering, drug delivery, and regenerative medicine applications. All GAGs, with the exception of hyaluronan, are present in the body covalently coupled to the protein core of proteoglycans, yet the incorporation of proteoglycans into biomaterials remains relatively unexplored. Proteoglycan-based biomaterials are more likely to recapitulate the unique, tissue-specific GAG profiles and native GAG presentation in human tissues. The protein core offers additional biological functionality, including cell, growth factor, and extracellular matrix binding domains, as well as sites for protein immobilization chemistries. Finally, proteoglycans can be recombinantly expressed in mammalian cells and thus offer genetic manipulation and metabolic engineering opportunities for control over the protein and GAG structures and functions. This Progress Report summarizes current developments in GAG-based biomaterials and presents emerging research and future opportunities for the development of biomaterials that incorporate GAGs presented in their native proteoglycan form.
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Affiliation(s)
| | - Fengying Tang
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
| | - John M. Whitelock
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
| | - Megan S. Lord
- Graduate School of Biomedical Engineering UNSW Sydney Sydney NSW 2052 Australia
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Le BQ, Nurcombe V, Cool SM, van Blitterswijk CA, de Boer J, LaPointe VLS. The Components of Bone and What They Can Teach Us about Regeneration. MATERIALS (BASEL, SWITZERLAND) 2017; 11:E14. [PMID: 29271933 PMCID: PMC5793512 DOI: 10.3390/ma11010014] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 12/20/2017] [Accepted: 12/21/2017] [Indexed: 12/18/2022]
Abstract
The problem of bone regeneration has engaged both physicians and scientists since the beginning of medicine. Not only can bone heal itself following most injuries, but when it does, the regenerated tissue is often indistinguishable from healthy bone. Problems arise, however, when bone does not heal properly, or when new tissue is needed, such as when two vertebrae are required to fuse to stabilize adjacent spine segments. Despite centuries of research, such procedures still require improved therapeutic methods to be devised. Autologous bone harvesting and grafting is currently still the accepted benchmark, despite drawbacks for clinicians and patients that include limited amounts, donor site morbidity, and variable quality. The necessity for an alternative to this "gold standard" has given rise to a bone-graft and substitute industry, with its central conundrum: what is the best way to regenerate bone? In this review, we dissect bone anatomy to summarize our current understanding of its constituents. We then look at how various components have been employed to improve bone regeneration. Evolving strategies for bone regeneration are then considered.
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Affiliation(s)
- Bach Quang Le
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #6-06 Immunos, Singapore 138648, Singapore.
| | - Victor Nurcombe
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #6-06 Immunos, Singapore 138648, Singapore.
| | - Simon McKenzie Cool
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #6-06 Immunos, Singapore 138648, Singapore.
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore 119288, Singapore.
| | - Clemens A van Blitterswijk
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Jan de Boer
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Vanessa Lydia Simone LaPointe
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
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In situ sequestration of endogenous PDGF-BB with an ECM-mimetic sponge for accelerated wound healing. Biomaterials 2017; 148:54-68. [DOI: 10.1016/j.biomaterials.2017.09.028] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/21/2017] [Accepted: 09/22/2017] [Indexed: 02/04/2023]
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Yap L, Murali S, Bhakta G, Titmarsh DM, Chen AKL, Chiin Sim L, Bardor M, Lim YM, Goh JCH, Oh SKW, Choo ABH, van Wijnen AJ, Robinson DE, Whittle JD, Birch WR, Short RD, Nurcombe V, Cool SM. Immobilization of vitronectin-binding heparan sulfates onto surfaces to support human pluripotent stem cells. J Biomed Mater Res B Appl Biomater 2017; 106:1887-1896. [PMID: 28941021 DOI: 10.1002/jbm.b.33999] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 08/11/2017] [Accepted: 09/01/2017] [Indexed: 11/10/2022]
Abstract
Functionalizing medical devices with polypeptides to enhance their performance has become important for improved clinical success. The extracellular matrix (ECM) adhesion protein vitronectin (VN) is an effective coating, although the chemistry used to attach VN often reduces its bioactivity. In vivo, VN binds the ECM in a sequence-dependent manner with heparan sulfate (HS) glycosaminoglycans. We reasoned therefore that sequence-based affinity chromatography could be used to isolate a VN-binding HS fraction (HS9) for use as a coating material to capture VN onto implant surfaces. Binding avidity and specificity of HS9 were confirmed by enzyme-linked immunosorbent assay (ELISA) and surface plasmon resonance (SPR)-based assays. Plasma polymerization of allylamine (AA) to tissue culture-treated polystyrene (TCPS) was then used to capture and present HS9 as determined by radiolabeling and ELISA. HS9-coated TCPS avidly bound VN, and this layered surface supported the robust attachment, expansion, and maintenance of human pluripotent stem cells. Compositional analysis demonstrated that 6-O- and N-sulfation, as well as lengths greater than three disaccharide units (dp6) are critical for VN binding to HS-coated surfaces. Importantly, HS9 coating reduced the threshold concentration of VN required to create an optimally bioactive surface for pluripotent stem cells. We conclude that affinity-purified heparan sugars are able to coat materials to efficiently bind adhesive factors for biomedical applications. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1887-1896, 2018.
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Affiliation(s)
- Lynn Yap
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore, 138648, Singapore.,NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Centre for Life Sciences (CeLS), #05-01, 28 Medical Drive, Singapore, 117456, Singapore
| | - Sadasivam Murali
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore, 138648, Singapore
| | - Gajadhar Bhakta
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore, 138648, Singapore
| | - Drew M Titmarsh
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore, 138648, Singapore
| | - Allen Kuan-Liang Chen
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, #06-01, Centros, Singapore, 138668, Singapore
| | - Lyn Chiin Sim
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, #06-01, Centros, Singapore, 138668, Singapore
| | - Muriel Bardor
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, #06-01, Centros, Singapore, 138668, Singapore.,Normandie University, UNIROUEN, Laboratoire Glyco-MEV, 76000, Rouen, France
| | - Yu Ming Lim
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, #06-01, Centros, Singapore, 138668, Singapore
| | - James C H Goh
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore, 119288, Singapore.,Department of Biomedical Engineering, National University of Singapore, 4 Engineering Drive 3, E4 #04-08, Singapore, 117583, Singapore
| | - Steve K W Oh
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, #06-01, Centros, Singapore, 138668, Singapore
| | - Andre B H Choo
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, #06-01, Centros, Singapore, 138668, Singapore.,Department of Biomedical Engineering, National University of Singapore, 4 Engineering Drive 3, E4 #04-08, Singapore, 117583, Singapore
| | - Andre J van Wijnen
- Mayo Clinic, Department of Orthopedic Surgery, 200 First St. SW, Rochester, Minnesota, 55905
| | - David E Robinson
- Mawson Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, 5095, Australia
| | - Jason D Whittle
- School of Engineering, Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, 5095, Australia
| | - William R Birch
- Institute of Materials Research & Engineering, #08-03, 2 Fusionopolis Way, Innovis, Singapore, 138634, Singapore
| | - Robert D Short
- Future Industry Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, 5095, Australia.,Material Science Institute and Department of Chemistry, University of Lancaster, Lancaster, LA1 4YW, UK
| | - Victor Nurcombe
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore, 138648, Singapore
| | - Simon M Cool
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore, 138648, Singapore.,Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore, 119288, Singapore
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Xu Z, Chen J, Shao W, Wang R, Liu Y. [Research progress in osteogenesis and osteogenic mechanism of heparan sulfate]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2017; 31:1016-1020. [PMID: 29806444 DOI: 10.7507/1002-1892.201701103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To discuss the role of heparan sulfate (HS) in bone formation and bone remodeling and summarize the research progress in the osteogenic mechanism of HS. Methods The domestic and abroad related literature about HS acting on osteoblast cell line in vitro, HS and HS composite scaffold materials acting on the ani-mal bone defect models, and the effect of HS proteoglycans on bone development were summarized and analyzed. Results Many growth factors involved in fracture healing especially heparin-binding growth factors, such as fibroblast growth factors, bone morphogenetic protein, and transforming growth factor β, are connected noncovalently with long HS chains. HS proteoglycans protect these proteins from protease degradation and are directly involved in the regulation of growth factors signaling and bone cell function. HS can promote the differentiation of stem cells into osteoblasts and enhance the differentiation of osteoblasts. In bone matrix, HS plays a significant role in promoting the formation, maintaining the stability, and accelerating the mineralization. Conclusion The osteogenesis of HS is pronounced. HS is likely to become the clinical treatment measures of fracture nonunion or delayed union, and is expected to provide more choices for bone tissue engineering with identification of its long-term safety.
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Affiliation(s)
- Zhujie Xu
- Department of Orthopedics, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi Jiangsu, 214000, P.R.China
| | - Jinghua Chen
- Medicinal Biopolymer Laboratory of College of Pharmacy, Jiangnan University, Wuxi Jiangsu, 214000, P.R.China
| | - Wei Shao
- Department of Orthopedics, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi Jiangsu, 214000, P.R.China
| | - Rui Wang
- Department of Orthopedics, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi Jiangsu, 214000, P.R.China
| | - Yi Liu
- Department of Orthopedics, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi Jiangsu, 214000, P.R.China;Medicinal Biopolymer Laboratory of College of Pharmacy, Jiangnan University, Wuxi Jiangsu, 214000,
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Lee SS, Fyrner T, Chen F, Álvarez Z, Sleep E, Chun DS, Weiner JA, Cook RW, Freshman RD, Schallmo MS, Katchko KM, Schneider AD, Smith JT, Yun C, Singh G, Hashmi SZ, McClendon MT, Yu Z, Stock SR, Hsu WK, Hsu EL, Stupp SI. Sulfated glycopeptide nanostructures for multipotent protein activation. NATURE NANOTECHNOLOGY 2017; 12. [PMID: 28650443 PMCID: PMC5553550 DOI: 10.1038/nnano.2017.109] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Biological systems have evolved to utilize numerous proteins with capacity to bind polysaccharides for the purpose of optimizing their function. A well-known subset of these proteins with binding domains for the highly diverse sulfated polysaccharides are important growth factors involved in biological development and tissue repair. We report here on supramolecular sulfated glycopeptide nanostructures, which display a trisulfated monosaccharide on their surfaces and bind five critical proteins with different polysaccharide-binding domains. Binding does not disrupt the filamentous shape of the nanostructures or their internal β-sheet backbone, but must involve accessible adaptive configurations to interact with such different proteins. The glycopeptide nanostructures amplified signalling of bone morphogenetic protein 2 significantly more than the natural sulfated polysaccharide heparin, and promoted regeneration of bone in the spine with a protein dose that is 100-fold lower than that required in the animal model. These highly bioactive nanostructures may enable many therapies in the future involving proteins.
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Affiliation(s)
- Sungsoo S. Lee
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
| | - Timmy Fyrner
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Feng Chen
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Zaida Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Eduard Sleep
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Danielle S. Chun
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Joseph A. Weiner
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Ralph W. Cook
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Ryan D. Freshman
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Michael S. Schallmo
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Karina M. Katchko
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Andrew D. Schneider
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Justin T. Smith
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Chawon Yun
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Gurmit Singh
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Sohaib Z. Hashmi
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Mark T. McClendon
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Zhilin Yu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
| | - Stuart R. Stock
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois 60611, USA
| | - Wellington K. Hsu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Erin L. Hsu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60208, USA
| | - Samuel I. Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
- Department of Medicine, Northwestern University, Chicago, Illinois 60611, USA
- Corresponding author:
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Ayerst BI, Merry CLR, Day AJ. The Good the Bad and the Ugly of Glycosaminoglycans in Tissue Engineering Applications. Pharmaceuticals (Basel) 2017; 10:E54. [PMID: 28608822 PMCID: PMC5490411 DOI: 10.3390/ph10020054] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/05/2017] [Accepted: 06/05/2017] [Indexed: 12/14/2022] Open
Abstract
High sulfation, low cost, and the status of heparin as an already FDA- and EMA- approved product, mean that its inclusion in tissue engineering (TE) strategies is becoming increasingly popular. However, the use of heparin may represent a naïve approach. This is because tissue formation is a highly orchestrated process, involving the temporal expression of numerous growth factors and complex signaling networks. While heparin may enhance the retention and activity of certain growth factors under particular conditions, its binding 'promiscuity' means that it may also inhibit other factors that, for example, play an important role in tissue maintenance and repair. Within this review we focus on articular cartilage, highlighting the complexities and highly regulated processes that are involved in its formation, and the challenges that exist in trying to effectively engineer this tissue. Here we discuss the opportunities that glycosaminoglycans (GAGs) may provide in advancing this important area of regenerative medicine, placing emphasis on the need to move away from the common use of heparin, and instead focus research towards the utility of specific GAG preparations that are able to modulate the activity of growth factors in a more controlled and defined manner, with less off-target effects.
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Affiliation(s)
- Bethanie I Ayerst
- Wellcome Trust Centre for Cell-Matrix Research, Division of Cell-Matrix Biology & Regenerative Medicine, School of Biology, Faculty of Biology, Medicine & Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK.
| | - Catherine L R Merry
- Stem Cell Glycobiology Group, Wolfson Centre for Stem Cells, Tissue Engineering & Modelling (STEM), Centre for Biomolecular Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK.
| | - Anthony J Day
- Wellcome Trust Centre for Cell-Matrix Research, Division of Cell-Matrix Biology & Regenerative Medicine, School of Biology, Faculty of Biology, Medicine & Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK.
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42
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Endogenous regeneration: Engineering growth factors for stroke. Neurochem Int 2017; 107:57-65. [PMID: 28411103 DOI: 10.1016/j.neuint.2017.03.024] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 03/30/2017] [Accepted: 03/31/2017] [Indexed: 12/31/2022]
Abstract
Despite the efforts in developing therapeutics for stroke, recombinant tissue plasminogen activator (rtPA) remains the only FDA approved drug for ischemic stroke. Regenerative medicine targeting endogenous growth factors has drawn much interest in the clinical field as it provides potential restoration for the damaged brain tissue without being limited by a narrow therapeutic window. To date, most of the translational studies using regenerative medicines have encountered problems and failures. In this review, we discuss the effects of some trophic factors which include of erythropoietin (EPO), brain derived neurotrophic factor (BDNF), granulocyte-colony stimulating factor (G-CSF), vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), epidermal growth factor (EGF) and heparin binding epidermal growth factor (HB-EGF) in experimental ischemic stroke models and elaborate the lost in translation of the candidate growth factors from bench to bedside. Several new methodologies have been developed to overcome the caveats in translational studies. This review highlights the latest bioengineering approaches including the controlled release and delivery of growth factors by hydrogel-based scaffolds and the enhancement of half-life and selectivity of growth factors by a novel approach facilitated by glycosaminoglycans.
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43
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Migliorini E, Horn P, Haraszti T, Wegner SV, Hiepen C, Knaus P, Richter RP, Cavalcanti-Adam EA. Enhanced Biological Activity of BMP-2 Bound to Surface-Grafted Heparan Sulfate. ACTA ACUST UNITED AC 2017; 1:e1600041. [DOI: 10.1002/adbi.201600041] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Elisa Migliorini
- Department of Biophysical Chemistry; Institute of Physical Chemistry; Heidelberg University; Im Neuenheimer Feld 253 69120 Heidelberg Germany
- Department of Cellular Biophysics; Max Planck Institute for Medical Research; Heisenbergstr. 3 D-70569 Stuttgart Germany
| | - Patrick Horn
- Department of Medicine V; Heidelberg University; INF 410 69120 Heidelberg Germany
| | - Tamás Haraszti
- DWI - Leibniz Institute for Interactive Materials; Forkenbeckstr. 50 52056 Aachen Germany
| | - Seraphine V. Wegner
- Department of Biophysical Chemistry; Institute of Physical Chemistry; Heidelberg University; Im Neuenheimer Feld 253 69120 Heidelberg Germany
- Department of Cellular Biophysics; Max Planck Institute for Medical Research; Heisenbergstr. 3 D-70569 Stuttgart Germany
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Christian Hiepen
- Institute of Biochemistry; Freie Universität Berlin; Thielallee 63 14195 Berlin Germany
| | - Petra Knaus
- Institute of Biochemistry; Freie Universität Berlin; Thielallee 63 14195 Berlin Germany
| | - Ralf P. Richter
- School of Biomedical Sciences and School of Physics and Astronomy; University of Leeds; Leeds LS2 9JT UK
- Biosurfaces Lab; CIC biomaGUNE; Paseo Miramon 182 20009 San Sebastian Spain
- Laboratory of Interdisciplinary Physics; University Grenoble-Alpes and CNRS; 140 Rue de la Physique 38402 St. Martin d'Hères France
| | - Elisabetta Ada Cavalcanti-Adam
- Department of Biophysical Chemistry; Institute of Physical Chemistry; Heidelberg University; Im Neuenheimer Feld 253 69120 Heidelberg Germany
- Department of Cellular Biophysics; Max Planck Institute for Medical Research; Heisenbergstr. 3 D-70569 Stuttgart Germany
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44
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Crecente-Campo J, Borrajo E, Vidal A, Garcia-Fuentes M. New scaffolds encapsulating TGF-β3/BMP-7 combinations driving strong chondrogenic differentiation. Eur J Pharm Biopharm 2017; 114:69-78. [PMID: 28087378 DOI: 10.1016/j.ejpb.2016.12.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 12/07/2016] [Accepted: 12/09/2016] [Indexed: 11/28/2022]
Abstract
The regeneration of articular cartilage remains an unresolved question despite the current access to a variety of tissue scaffolds activated with growth factors relevant to this application. Further advances might result from combining more than one of these factors; here, we propose a scaffold composition optimized for the dual delivery of BMP-7 and TGF-β3, two proteins with described chondrogenic activity. First, we tested in a mesenchymal stem cell micromass culture with TGF-β3 whether the exposure to microspheres loaded with BMP-7 would improve cartilage formation. Histology and qRT-PCR data confirmed that the sustained release of BMP-7 cooperates with TGF-β3 towards chondrogenic differentiation. Then, we optimized a scaffold prototype for tissue culture and dual encapsulation of BMP-7 and TGF-β3. The scaffolds were prepared from poly(lactic-co-glycolic acid), and BMP-7/TGF-β3 were loaded as nanocomplexes with heparin and Tetronic 1107. The scaffolds showed the sustained release of both proteins over four weeks, with minimal burst effect. We finally cultured human mesenchymal stem cells on these scaffolds, in the absence of exogenous chondrogenic factor supplementation. The cells cultured on the scaffolds loaded with BMP-7 and TGF-β3 showed clear signs of cartilage formation macroscopically and histologically. RT-PCR studies confirmed a clear upregulation of cartilage markers SOX9 and Aggrecan. In summary, scaffolds encapsulating BMP-7 and TGF-β3 can efficiently deliver a cooperative growth factor combination that drives efficient cartilage formation in human mesenchymal stem cell cultures. These results open attractive perspectives towards in vivo translation of this technology in cartilage regeneration experiments.
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Affiliation(s)
- Jose Crecente-Campo
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Universidade de Santiago de Compostela, Avda. Barcelona s/n, 15782 Santiago de Compostela, Spain
| | - Erea Borrajo
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Universidade de Santiago de Compostela, Avda. Barcelona s/n, 15782 Santiago de Compostela, Spain
| | - Anxo Vidal
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Universidade de Santiago de Compostela, Avda. Barcelona s/n, 15782 Santiago de Compostela, Spain
| | - Marcos Garcia-Fuentes
- Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Universidade de Santiago de Compostela, Avda. Barcelona s/n, 15782 Santiago de Compostela, Spain.
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45
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Ayerst BI, Smith RAA, Nurcombe V, Day AJ, Merry CLR, Cool SM. Growth Differentiation Factor 5-Mediated Enhancement of Chondrocyte Phenotype Is Inhibited by Heparin: Implications for the Use of Heparin in the Clinic and in Tissue Engineering Applications. Tissue Eng Part A 2017; 23:275-292. [PMID: 27899064 PMCID: PMC5397242 DOI: 10.1089/ten.tea.2016.0364] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The highly sulfated glycosaminoglycan (GAG) heparin is widely used in the clinic as an anticoagulant, and researchers are now using it to enhance stem cell expansion/differentiation protocols, as well as to improve the delivery of growth factors for tissue engineering (TE) strategies. Growth differentiation factor 5 (GDF5) belongs to the bone morphogenetic protein family of proteins and is vital for skeletal formation; however, its interaction with heparin and heparan sulfate (HS) has not been studied. We identify GDF5 as a novel heparin/HS binding protein and show that HS proteoglycans are vital in localizing GDF5 to the cell surface. Clinically relevant doses of heparin (≥10 nM), but not equivalent concentrations of HS, were found to inhibit GDF5's biological activity in both human mesenchymal stem/stromal cell-derived chondrocyte pellet cultures and the skeletal cell line ATDC5. We also found that heparin inhibited both GDF5 binding to cell surface HS and GDF5-induced induction of Smad 1/5/8 signaling. Furthermore, GDF5 significantly increased aggrecan gene expression in chondrocyte pellet cultures, without affecting collagen type X expression, making it a promising target for the TE of articular cartilage. Importantly, this study may explain the variable (and disappointing) results seen with heparin-loaded biomaterials for skeletal TE and the adverse skeletal effects reported in the clinic following long-term heparin treatment. Our results caution the use of heparin in the clinic and in TE applications, and prompt the transition to using more specific GAGs (e.g., HS derivatives), with better-defined structures and fewer off-target effects.
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Affiliation(s)
- Bethanie I Ayerst
- 1 Institute of Medical Biology , Agency for Science, Technology and Research (A*STAR), Singapore, Singapore .,2 Wellcome Trust Centre for Cell-Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biology, Faculty of Biology Medicine and Health, Manchester Academic Health Science Centre, University of Manchester , Manchester, United Kingdom
| | - Raymond A A Smith
- 1 Institute of Medical Biology , Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Victor Nurcombe
- 1 Institute of Medical Biology , Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Anthony J Day
- 2 Wellcome Trust Centre for Cell-Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biology, Faculty of Biology Medicine and Health, Manchester Academic Health Science Centre, University of Manchester , Manchester, United Kingdom
| | - Catherine L R Merry
- 3 School of Materials, University of Manchester , Manchester, United Kingdom .,4 Wolfson Centre for Stem Cells, Tissue Engineering and Modelling, Centre for Biomolecular Sciences, University of Nottingham , Nottingham, United Kingdom
| | - Simon M Cool
- 1 Institute of Medical Biology , Agency for Science, Technology and Research (A*STAR), Singapore, Singapore .,5 Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore
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46
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Affiliation(s)
- James Melrose
- Raymond Purves Bone and Joint Research Laboratory, Kolling Institute Northern Sydney Local Health District, St. Leonards, NSW, Australia
- Sydney Medical School, Royal North Shore Hospital, The University of Sydney, Camperdown, NSW, Australia
- School of Biomedical Engineering, The University of New South Wales, Kensington, NSW, Australia
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47
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Azeem A, Marani L, Fuller K, Spanoudes K, Pandit A, Zeugolis D. Influence of Nonsulfated Polysaccharides on the Properties of Electrospun Poly(lactic-co-glycolic acid) Fibers. ACS Biomater Sci Eng 2016; 3:1304-1312. [DOI: 10.1021/acsbiomaterials.6b00206] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. Azeem
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, and ‡Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - L. Marani
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, and ‡Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - K. Fuller
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, and ‡Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - K. Spanoudes
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, and ‡Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - A. Pandit
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, and ‡Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - D.I. Zeugolis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, and ‡Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
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48
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Carnachan SM, Bell TJ, Sims IM, Smith RAA, Nurcombe V, Cool SM, Hinkley SFR. Determining the extent of heparan sulfate depolymerisation following heparin lyase treatment. Carbohydr Polym 2016; 152:592-597. [PMID: 27516308 DOI: 10.1016/j.carbpol.2016.07.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 07/05/2016] [Accepted: 07/07/2016] [Indexed: 10/21/2022]
Abstract
The depolymerisation of porcine mucosal heparan sulfate under the action of heparin lyases and analysis by size-exclusion chromatography (SEC) is described. Heparan sulfate treated to enzymic bond scission producing a Δ4,5 double-bond and quantified by SEC with ultraviolet-visible (UV) spectroscopic detection (230nm) indicated that the majority of the biopolymer (>85%) was reduced to disaccharides (degree of polymerisation (DP)=2). However, analysis of the SEC eluant using refractive index (RI), which reflects the mass contribution of the oligosaccharides rather than the molar response of a UV chromophore, indicated that a considerable proportion of the digested HS, up to 43%, was present with DP >2. This was supported by a mass balance analysis. These results contradict the accepted literature where "complete digestion" is routinely reported. Herein we report on the composition and methodology utilised to ascertain the extent of depolymerization and disaccharide composition of this important biopolymer.
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Affiliation(s)
- Susan M Carnachan
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt, 5040, New Zealand
| | - Tracey J Bell
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt, 5040, New Zealand
| | - Ian M Sims
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt, 5040, New Zealand
| | - Raymond A A Smith
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore, Singapore
| | - Victor Nurcombe
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore, Singapore
| | - Simon M Cool
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore, Singapore
| | - Simon F R Hinkley
- The Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Road, Lower Hutt, 5040, New Zealand.
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49
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Wijesinghe SJ, Ling L, Murali S, Qing YH, Hinkley SFR, Carnachan SM, Bell TJ, Swaminathan K, Hui JH, van Wijnen AJ, Nurcombe V, Cool SM. Affinity Selection of FGF2-Binding Heparan Sulfates for Ex Vivo Expansion of Human Mesenchymal Stem Cells. J Cell Physiol 2016; 232:566-575. [PMID: 27291835 DOI: 10.1002/jcp.25454] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 06/10/2016] [Indexed: 12/25/2022]
Abstract
The future of human mesenchymal stem cells (hMSCs) as a successful cell therapy relies on bioprocessing strategies to improve the scalability of these cells without compromising their therapeutic ability. The culture-expansion of hMSCs can be enhanced by supplementation with growth factors, particularly fibroblast growth factor 2 (FGF2). The biological activity of FGF2 is controlled through interactions with heparan sulfate (HS) that facilitates ligand-receptor complex formation. We previously reported on an FGF2-interacting HS variant (termed HS2) isolated from embryonic tissue by anionic exchange chromatography that increased the proliferation and potency of hMSCs. Here, we detail the isolation of an FGF2 affinity-purified HS variant (HS8) using a scalable platform technology previously employed to generate HS variants with increased affinity for BMP-2 or VEGF165 . This process used a peptide sequence derived from the heparin-binding domain of FGF2 as a substrate to affinity-isolate HS8 from a commercially available source of porcine mucosal HS. Our data show that HS8 binds to FGF2 with higher affinity than to FGF1, FGF7, BMP2, PDGF-BB, or VEGF165 . Also, HS8 protects FGF2 from thermal destabilization and increases FGF signaling and hMSC proliferation through FGF receptor 1. Long-term supplementation of cultures with HS8 increased both hMSC numbers and their colony-forming efficiency without adversely affecting the expression of hMSC-related cell surface antigens. This strategy further exemplifies the utility of affinity-purifying HS variants against particular ligands important to the stem cell microenvironment and advocates for their addition as adjuvants for the culture-expansion of hMSCs destined for cellular therapy. J. Cell. Physiol. 232: 566-575, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
| | - Ling Ling
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Sadasivam Murali
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Yeong Hui Qing
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Simon F R Hinkley
- The Ferrier Research Institute, Victoria University of Wellington, Lower Hutt, New Zealand
| | - Susan M Carnachan
- The Ferrier Research Institute, Victoria University of Wellington, Lower Hutt, New Zealand
| | - Tracey J Bell
- The Ferrier Research Institute, Victoria University of Wellington, Lower Hutt, New Zealand
| | | | - James H Hui
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Andre J van Wijnen
- Department of Orthopedic Surgery and Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Victor Nurcombe
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Simon M Cool
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore.,Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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50
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A novel open-porous magnesium scaffold with controllable microstructures and properties for bone regeneration. Sci Rep 2016; 6:24134. [PMID: 27071777 PMCID: PMC4829853 DOI: 10.1038/srep24134] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 03/21/2016] [Indexed: 12/05/2022] Open
Abstract
The traditional production methods of porous magnesium scaffolds are difficult to accurately control the pore morphologies and simultaneously obtain appropriate mechanical properties. In this work, two open-porous magnesium scaffolds with different pore size but in the nearly same porosity are successfully fabricated with high-purity Mg ingots through the titanium wire space holder (TWSH) method. The porosity and pore size can be easily, precisely and individually controlled, as well as the mechanical properties also can be regulated to be within the range of human cancellous bone by changing the orientation of pores without sacrifice the requisite porous structures. In vitro cell tests indicate that the scaffolds have good cytocompatibility and osteoblastic differentiation properties. In vivo findings demonstrate that both scaffolds exhibit acceptable inflammatory responses and can be almost fully degraded and replaced by newly formed bone. More importantly, under the same porosity, the scaffolds with larger pore size can promote early vascularization and up-regulate collagen type 1 and OPN expression, leading to higher bone mass and more mature bone formation. In conclusion, a new method is introduced to develop an open-porous magnesium scaffold with controllable microstructures and mechanical properties, which has great potential clinical application for bone reconstruction in the future.
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