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Dynamic and Self-Healable Chitosan/Hyaluronic Acid-Based In Situ-Forming Hydrogels. Gels 2022; 8:gels8080477. [PMID: 36005079 PMCID: PMC9407353 DOI: 10.3390/gels8080477] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 02/06/2023] Open
Abstract
In situ-forming, biodegradable, and self-healing hydrogels, which maintain their integrity after damage, owing to dynamic interactions, are essential biomaterials for bioapplications, such as tissue engineering and drug delivery. This work aims to develop in situ, biodegradable and self-healable hydrogels based on dynamic covalent bonds between N-succinyl chitosan (S-CHI) and oxidized aldehyde hyaluronic acid (A-HA). A robust effect of the molar ratio of both S-CHI and A-HA was observed on the swelling, mechanical stability, rheological properties and biodegradation kinetics of these hydrogels, being the stoichiometric ratio that which leads to the lowest swelling factor (×12), highest compression modulus (1.1·10−3 MPa), and slowest degradation (9 days). Besides, a rapid (3 s) self-repairing ability was demonstrated in the macro scale as well as by rheology and mechanical tests. Finally, the potential of these biomaterials was evidenced by cytotoxicity essay (>85%).
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2
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Effect of magnesium oxide nanoparticles, hydroxyapatite and hydrogel on regeneration of transverse fracture of distal radius. Int J Health Sci (Qassim) 2022. [DOI: 10.53730/ijhs.v6ns2.6206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Study's purpose of this study is to conduct synthesis and evaluate the effect of hydroxyapatite (HA) with hydrogel locally magnesium oxide nanoparticles (MgONPS) locally or intraperitoneally (IP) on the healing of the distal third radial fracture. Concentrations of MgONPs 200μg/ml, dissolved in 1 cc distilled water and the solution stirred by a stirrer for 10 min. HA 0.5 mg in 1ml hydrogel and the solution stirring at the vortex for 15 min. These materials were evaluated in vitro to ensure their suitability with the tissues. Seventy-five healthy adult male rabbits, aged about 1.5- 2 years old with average weighting 1.7- 2.3 Kg. B.W were used. Rabbits were divided into three groups randomly (n=25), group A (HA mixed hydrogel applied locally), group B (HA mixed with hydrogel and MgONPs applied locally) and group C (HA mixed hydrogel applied locally and MgONPs IP). Animals were anesthetized by i.m 40 mg/ kg B.W ketamine hydrochloride and 5mg/ kg B.W xylazine. A 5cm incision had made cranio-medially in the skin of the forelimb (right forelimb) and exposure radius and ulna. The macroscopic evaluation revealed that all groups at 2nd week showed bone reaction in different degrees.
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3
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Park MJ, An YH, Choi YH, Kim HD, Hwang NS. Enhanced Neovascularization Using Injectable and rhVEGF-Releasing Cryogel Microparticles. Macromol Biosci 2021; 21:e2100234. [PMID: 34382323 DOI: 10.1002/mabi.202100234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Indexed: 11/09/2022]
Abstract
Cryogels are gel networks or scaffolds with a large porous structure; they can be tailored for injectability and for possessing a shape-memory ability. Herein, a growth factor-releasing cryogel microparticle (CMP) system is fabricated, and the therapeutic efficacy of recombinant human vascular endothelial growth factor (rhVEGF)-loaded CMP (V-CMP) for neovascularization is investigated. To prepare the cryogels, both methacrylated chitosan (Chi-MA) and methacrylated chondroitin sulfate (CS-MA) are used, and crosslinking using a radical crosslinking reaction is established. The physical, mechanical, and biological properties of the cryogels are analyzed by varying the amount of CS-MA used. The cryogels are then pulverized, and microsized CMPs are fabricated. CMPs dispersed in saline demonstrate a shear-thinning property, and can thus be extruded through a 23G needle. Additionally, V-CMP exhibit a sustained release profile of rhVEGF and enhance the in vitro proliferation of endothelial cells. Finally, neovascularization and effective tissue necrosis prevention are observed when V-CMPs are injected into a hindlimb ischemia mouse model. Thus, the injectable V-CMP system developed herein demonstrates a high potential utility in various tissue regeneration applications based on cell or growth factor delivery.
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Affiliation(s)
- Mihn Jeong Park
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Young-Hyeon An
- School of Chemical and Biological Engineering, Institute of Chemical Processes, BioMAX/N-Bio Institute, Seoul National University, Seoul, 08826, Republic of Korea.,Institute of Engineering Research, Seoul National University, Seoul, 08826, Republic of Korea
| | - Young Hwan Choi
- School of Chemical and Biological Engineering, Institute of Chemical Processes, BioMAX/N-Bio Institute, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hwan D Kim
- Department of Polymer Science and Engineering, Department of Biomedical Engineering, Korea National University of Transportation, Chungju, 27469, Republic of Korea
| | - Nathaniel S Hwang
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea.,School of Chemical and Biological Engineering, Institute of Chemical Processes, BioMAX/N-Bio Institute, Seoul National University, Seoul, 08826, Republic of Korea.,Institute of Engineering Research, Seoul National University, Seoul, 08826, Republic of Korea
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4
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Alemzadeh E, Oryan A, Mohammadi AA. Hyaluronic acid hydrogel loaded by adipose stem cells enhances wound healing by modulating IL-1β, TGF-β1, and bFGF in burn wound model in rat. J Biomed Mater Res B Appl Biomater 2019; 108:555-567. [PMID: 31081996 DOI: 10.1002/jbm.b.34411] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 03/17/2019] [Accepted: 04/25/2019] [Indexed: 01/21/2023]
Abstract
Application of hydrogels can be an effective technique in transferring the adipose-derived stem cells (ASCs) to injured tissue and their protection from further complications. Besides, acellular dermal matrix (ADM) has successfully been used in treatment of wounds. In this study, a combination of hylauronic acid (HA) and ASCs (HA/ASCs) was applied on burn wounds and the injured area was then covered by an ADM dressing in a rat model (ADM-HA/ASCs). Wound healing was evaluated by histopathological, histomorphometrical, molecular, biochemical, and scanning electron microscopy assessments on days 7, 14, and 28 post-wounding. ADM-HA/ASCs stimulated healing significantly more than the ADM-HA and ADM treated wounds, as it led to reduced inflammation, and improved angiogenesis and enhanced granulation tissue formation. Expression of interleukin-1β (IL-1β) and transforming growth factor-β1 (TGF-β1) was lower in the ADM-HA/ASCs treated wounds than the ADM-HA and ADM groups, at the seventh post-wounding day. ADM-HA/ASCs also enhanced the expression level of TGF-β1 mRNA at 14 day post-wounding that was parallel to the experimental data from histological and biochemical assessments and confirmed the positive role of ASCs in repair of burn wounds. Additionally, increase in basic fibroblast growth factor (bFGF) expression and decreased TGF-β1 level on the 28th post-wounding day indicated the anti-scarring activity of ASCs. HA loaded by adipose stem cells can represent a promising strategy in accelerating burn wound healing.
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Affiliation(s)
- Esmat Alemzadeh
- Department of Biotechnology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Ahmad Oryan
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Ali A Mohammadi
- Burn and Wound Healing Research Center, Plastic and Reconstructive Ward, Shiraz University of Medical Sciences, Shiraz, Iran
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Silini AR, Spoldi V, De Munari S, Vertua E, Munarin F, Petrini P, Farè S, Parolini O. Immunological and Differentiation Properties of Amniotic Cells Are Retained After Immobilization in Pectin Gel. Cell Transplant 2018; 27:70-76. [PMID: 29562782 PMCID: PMC6434488 DOI: 10.1177/0963689717738786] [Citation(s) in RCA: 9] [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: 04/06/2017] [Revised: 06/07/2017] [Accepted: 06/07/2017] [Indexed: 01/04/2023] Open
Abstract
Mesenchymal stromal cells from the human amniotic membrane (i.e., human amniotic mesenchymal stromal cells [hAMSCs]) of term placenta are increasingly attracting attention for their applications in regenerative medicine. Osteochondral defects represent a major clinical problem with lifelong chronic pain and compromised quality of life. Great promise for osteochondral regeneration is held in hydrogel-based constructs that have a flexible composition and mimic the physiological structure of cartilage. Cell loading within a hydrogel represents an advantage for regenerative purposes, but the encapsulation steps can modify cell properties. As pectin gels have also been explored as cell vehicles on 3D scaffolds, the aim of this study was to explore the possibility to include hAMSCs in pectin gel. Immobilization of hAMSCs into pectin gels could expand their application in cell-based bioengineering strategies. hAMSCs were analyzed for their viability and recovery from the pectin gel and for their ability to differentiate toward the osteogenic lineage and to maintain their immunological characteristics. When treated with a purposely designed pectin/hydroxyapatite gel biocomposite, hAMSCs retained their ability to differentiate toward the osteogenic lineage, did not induce an immune response, and retained their ability to reduce T cell proliferation. Taken together, these results suggest that hAMSCs could be used in combination to pectin gels for the study of novel osteochondral regeneration strategies.
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Affiliation(s)
- Antonietta R. Silini
- Centro di Ricerca “E. Menni,” Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy
| | - Valentina Spoldi
- Centro di Ricerca “E. Menni,” Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy
| | - Silvia De Munari
- Centro di Ricerca “E. Menni,” Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy
| | - Elsa Vertua
- Centro di Ricerca “E. Menni,” Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy
| | - Fabiola Munarin
- Laboratorio di Biomateriali, Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta,” Politecnico di Milano, Milano, Italy
- Unità di Ricerca Consorzio INSTM, Politecnico di Milano, Milano, Italy
| | - Paola Petrini
- Laboratorio di Biomateriali, Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta,” Politecnico di Milano, Milano, Italy
- Unità di Ricerca Consorzio INSTM, Politecnico di Milano, Milano, Italy
| | - Silvia Farè
- Laboratorio di Biomateriali, Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta,” Politecnico di Milano, Milano, Italy
- Unità di Ricerca Consorzio INSTM, Politecnico di Milano, Milano, Italy
| | - Ornella Parolini
- Centro di Ricerca “E. Menni,” Fondazione Poliambulanza Istituto Ospedaliero, Brescia, Italy
- Istituto di Anatomia Umana e Biologia Cellulare, Università Cattolica del Sacro Cuore Facoltà di Medicina e Chirurgia, Rome, Italy
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Shim KS, Kim SE, Yun YP, Choi S, Kim HJ, Park K, Song HR. Biphasic Calcium Phosphate (BCP)-Immobilized Porous Poly (d,l-Lactic-co-Glycolic Acid) Microspheres Enhance Osteogenic Activities of Osteoblasts. Polymers (Basel) 2017; 9:polym9070297. [PMID: 30970975 PMCID: PMC6432369 DOI: 10.3390/polym9070297] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 07/11/2017] [Accepted: 07/18/2017] [Indexed: 01/09/2023] Open
Abstract
The purpose of this study was to evaluate the potential of porous poly (d,l-lactic-co-glycolic acid) (PLGA) microspheres (PMSs) immobilized on biphasic calcium phosphate nanoparticles (BCP NPs) (BCP-IM-PMSs) to enhance osteogenic activity. PMSs were fabricated using a fluidic device, and their surfaces were modified with l-lysine (aminated-PMSs), whereas the BCP NPs were modified with heparin⁻dopamine (Hep-DOPA) to obtain heparinized⁻BCP (Hep-BCP) NPs. BCP-IM-PMSs were fabricated via electrostatic interactions between the Hep-BCP NPs and aminated-PMSs. The fabricated BCP-IM-PMSs showed an interconnected pore structure. In vitro studies showed that MG-63 cells cultured on BCP-IM-PMSs had increased alkaline phosphatase activity, calcium content, and mRNA expression of osteocalcin (OCN) and osteopontin (OPN) compared with cells cultured on PMSs. These data suggest that BCP NP-immobilized PMSs have the potential to enhance osteogenic activity.
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Affiliation(s)
- Kyu-Sik Shim
- Department of Biomedical Science, College of Medicine, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Korea.
- Department of Orthopedic Surgery and Rare Diseases Institute, Korea University Medical College, Guro Hospital, #80, Guro-dong, Guro-gu, Seoul 08308, Korea.
| | - Sung Eun Kim
- Department of Orthopedic Surgery and Rare Diseases Institute, Korea University Medical College, Guro Hospital, #80, Guro-dong, Guro-gu, Seoul 08308, Korea.
| | - Young-Pil Yun
- Department of Orthopedic Surgery and Rare Diseases Institute, Korea University Medical College, Guro Hospital, #80, Guro-dong, Guro-gu, Seoul 08308, Korea.
| | - Somang Choi
- Department of Biomedical Science, College of Medicine, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Korea.
- Department of Orthopedic Surgery and Rare Diseases Institute, Korea University Medical College, Guro Hospital, #80, Guro-dong, Guro-gu, Seoul 08308, Korea.
| | - Hak-Jun Kim
- Department of Orthopedic Surgery and Rare Diseases Institute, Korea University Medical College, Guro Hospital, #80, Guro-dong, Guro-gu, Seoul 08308, Korea.
| | - Kyeongsoon Park
- Department of Systems Biotechnology, College of Biotechnology and Natural Resources, Chung-Ang University, 4726 Seodong-daero, Daedeok-myeon, Anseong-si, Gyeonggi-do 17546, Korea.
| | - Hae-Ryong Song
- Department of Orthopedic Surgery and Rare Diseases Institute, Korea University Medical College, Guro Hospital, #80, Guro-dong, Guro-gu, Seoul 08308, Korea.
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7
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Poldervaart MT, Goversen B, de Ruijter M, Abbadessa A, Melchels FPW, Öner FC, Dhert WJA, Vermonden T, Alblas J. 3D bioprinting of methacrylated hyaluronic acid (MeHA) hydrogel with intrinsic osteogenicity. PLoS One 2017; 12:e0177628. [PMID: 28586346 PMCID: PMC5460858 DOI: 10.1371/journal.pone.0177628] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 05/01/2017] [Indexed: 01/03/2023] Open
Abstract
In bone regenerative medicine there is a need for suitable bone substitutes. Hydrogels have excellent biocompatible and biodegradable characteristics, but their visco-elastic properties limit their applicability, especially with respect to 3D bioprinting. In this study, we modified the naturally occurring extracellular matrix glycosaminoglycan hyaluronic acid (HA), in order to yield photo-crosslinkable hydrogels with increased mechanical stiffness and long-term stability, and with minimal decrease in cytocompatibility. Application of these tailor-made methacrylated hyaluronic acid (MeHA) gels for bone tissue engineering and 3D bioprinting was the subject of investigation. Visco-elastic properties of MeHA gels, measured by rheology and dynamic mechanical analysis, showed that irradiation of the hydrogels with UV light led to increased storage moduli and elastic moduli, indicating increasing gel rigidity. Subsequently, human bone marrow derived mesenchymal stromal cells (MSCs) were incorporated into MeHA hydrogels, and cell viability remained 64.4% after 21 days of culture. Osteogenic differentiation of MSCs occurred spontaneously in hydrogels with high concentrations of MeHA polymer, in absence of additional osteogenic stimuli. Addition of bone morphogenetic protein-2 (BMP-2) to the culture medium further increased osteogenic differentiation, as evidenced by increased matrix mineralisation. MeHA hydrogels demonstrated to be suitable for 3D bioprinting, and were printed into porous and anatomically shaped scaffolds. Taken together, photosensitive MeHA-based hydrogels fulfilled our criteria for cellular bioprinted bone constructs within a narrow window of concentration.
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Affiliation(s)
| | - Birgit Goversen
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, the Netherlands
| | - Mylene de Ruijter
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Anna Abbadessa
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, the Netherlands
| | - Ferry P. W. Melchels
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - F. Cumhur Öner
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Wouter J. A. Dhert
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
- Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Tina Vermonden
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, the Netherlands
| | - Jacqueline Alblas
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
- * E-mail:
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8
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Munarin F, Coulombe KLK. A novel 3-dimensional approach for cardiac regeneration. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2015:1741-4. [PMID: 26736614 DOI: 10.1109/embc.2015.7318714] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Ischemic heart diseases, such as coronary artery disease and microvascular disease, are cardiovascular pathologies that cause reduced blood supply to the heart muscle. Acute and chronic ischemia cause cardiomyocytes to die, and these cells are not naturally replaced as part of the wound healing process in the heart. To promote neovascularization in the wound bed and in implanted engineered tissues, we have developed a collagen-alginate microspheres scaffold intended for local release of drugs and growth factors in order to recruit host endothelial cells to the area and provide them with geometrical cues to form new vessels. Optimization of alginate microspheres included modulation of nitrogen pressure, alginate and CaCl2 concentrations, nozzle size, and velocity of extrusion to achieve monodisperse populations of 100 μm diameter microspheres with protein release over 3 days. In vitro incorporation of fibroblasts in the bulk collagen demonstrated cellular compatibility with embedded alginate microspheres. An in vitro vessel formation assay, performed with human umbilical vein endothelial cells (HUVECs) immobilized in the collagen phase of the collagen-alginate microspheres scaffolds, showed that HUVECs formed networks following the 3-dimensional pattern of the microspheres even in the absence of growth factor. Implantation of acellular collagen-alginate microspheres scaffolds onto healthy rat hearts confirmed the invasion of host cells at one week. Together, these results suggest that the collagen-alginate microspheres scaffold is a viable, tunable therapeutic approach for directing neovascularization in engineered tissues and in the heart after ischemic events.
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Bernhard JC, Vunjak-Novakovic G. Should we use cells, biomaterials, or tissue engineering for cartilage regeneration? Stem Cell Res Ther 2016; 7:56. [PMID: 27089917 PMCID: PMC4836146 DOI: 10.1186/s13287-016-0314-3] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
For a long time, cartilage has been a major focus of the whole field of tissue engineering, both because of the constantly growing need for more effective options for joint repair and the expectation that this apparently simple tissue will be easy to engineer. After several decades, cartilage regeneration has proven to be anything but easy. With gratifying progress in our understanding of the factors governing cartilage development and function, and cell therapy being successfully used for several decades, there is still a lot to do. We lack reliable methods to generate durable articular cartilage that would resemble the original tissue lost to injury or disease. The question posed here is whether the answer would come from the methods using cells, biomaterials, or tissue engineering. We present a concise review of some of the most meritorious efforts in each area, and propose that the solution will most likely emerge from the ongoing attempts to recapitulate certain aspects of native cartilage development. While an ideal recipe for cartilage regeneration is yet to be formulated, we believe that it will contain cell, biomaterial, and tissue engineering approaches, blended into an effective method for seamless repair of articular cartilage.
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Affiliation(s)
- Jonathan C Bernhard
- Department of Biomedical Engineering, Columbia University, 622 West 168th Street, VC12-234, New York, NY, 10032, USA
| | - Gordana Vunjak-Novakovic
- Department of Biomedical Engineering, Columbia University, 622 West 168th Street, VC12-234, New York, NY, 10032, USA. .,Department of Medicine, Columbia University, 622 West 168th Street, VC12-234, New York, NY, 10032, USA.
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10
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Montesi M, Panseri S, Iafisco M, Adamiano A, Tampieri A. Coupling Hydroxyapatite Nanocrystals with Lactoferrin as a Promising Strategy to Fine Regulate Bone Homeostasis. PLoS One 2015; 10:e0132633. [PMID: 26148296 PMCID: PMC4492779 DOI: 10.1371/journal.pone.0132633] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 06/16/2015] [Indexed: 12/13/2022] Open
Abstract
Lactoferrin (LF) is an interesting glycoprotein in the field of bone biology for its regulatory effect on cells involved in bone remodeling, that results compromised in several pathological conditions, as osteoporosis. In a previous study we observed that the coupling of LF and biomimetic hydroxyapatite nanocrystals (HA), a material well-known for its bioactivity and osteoconductive properties, leads to a combined effect in the induction of osteogenic differentiation of mesenchymal stem cells. On the basis of this evidence, the present study is an extension of our previous work aiming to investigate the synergistic effect of the coupling of HA and LF on bone homeostasis. Biomimetic HA nanocrystals were synthesized and functionalized with LF (HA-LF) and then pre-osteoblasts (MC3T3-E1) and monocyte/macrophage cells lines (RAW 264.7), using as osteoclastogenesis in vitro model, were cultured separately or in co-culture in presence of HA-LF. The results clearly revealed that HA and LF act in synergism in the regulation of the bone homeostasis, working as anabolic factor for osteoblasts differentiation and bone matrix deposition, and as inhibitor of the osteoclast formation and activity.
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Affiliation(s)
- Monica Montesi
- Institute of Science and Technology for Ceramics, National Research Council, Faenza, Ravenna, Italy
- * E-mail:
| | - Silvia Panseri
- Institute of Science and Technology for Ceramics, National Research Council, Faenza, Ravenna, Italy
| | - Michele Iafisco
- Institute of Science and Technology for Ceramics, National Research Council, Faenza, Ravenna, Italy
| | - Alessio Adamiano
- Institute of Science and Technology for Ceramics, National Research Council, Faenza, Ravenna, Italy
| | - Anna Tampieri
- Institute of Science and Technology for Ceramics, National Research Council, Faenza, Ravenna, Italy
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Abbah SA, Spanoudes K, O'Brien T, Pandit A, Zeugolis DI. Assessment of stem cell carriers for tendon tissue engineering in pre-clinical models. Stem Cell Res Ther 2015; 5:38. [PMID: 25157898 PMCID: PMC4056691 DOI: 10.1186/scrt426] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Tendon injuries are prevalent and problematic, especially among young and otherwise healthy individuals. The inherently slow innate healing process combined with the inevitable scar tissue formation compromise functional recovery, imposing the need for the development of therapeutic strategies. The limited number of low activity/reparative capacity tendon-resident cells has directed substantial research efforts towards the exploration of the therapeutic potential of various stem cells in tendon injuries and pathophysiologies. Severe injuries require the use of a stem cell carrier to enable cell localisation at the defect site. The present study describes advancements that injectable carriers, tissue grafts, anisotropically orientated biomaterials, and cell-sheets have achieved in preclinical models as stem cell carriers for tendon repair.
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12
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Mazunin D, Broguiere N, Zenobi-Wong M, Bode JW. Synthesis of Biocompatible PEG Hydrogels by pH-Sensitive Potassium Acyltrifluoroborate (KAT) Amide Ligations. ACS Biomater Sci Eng 2015; 1:456-462. [DOI: 10.1021/acsbiomaterials.5b00145] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Dmitry Mazunin
- Laboratorium
für Organische Chemie, Department of Chemistry and Applied
Biosciences, ETH−Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Nicolas Broguiere
- Cartilage
Engineering and Regeneration Laboratory, Department of Health Science
and Technology, ETH−Zürich, Otto-Stern-Weg 7, 8093 Zürich, Switzerland
| | - Marcy Zenobi-Wong
- Cartilage
Engineering and Regeneration Laboratory, Department of Health Science
and Technology, ETH−Zürich, Otto-Stern-Weg 7, 8093 Zürich, Switzerland
| | - Jeffrey W. Bode
- Laboratorium
für Organische Chemie, Department of Chemistry and Applied
Biosciences, ETH−Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
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13
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Hydrogel-based nanocomposites and mesenchymal stem cells: a promising synergistic strategy for neurodegenerative disorders therapy. ScientificWorldJournal 2013; 2013:270260. [PMID: 24459423 PMCID: PMC3891425 DOI: 10.1155/2013/270260] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 11/26/2013] [Indexed: 01/29/2023] Open
Abstract
Hydrogel-based materials are widely employed in the biomedical field. With regard to central nervous system (CNS) neurodegenerative disorders, the design of injectable nanocomposite hydrogels for in situ drug or cell release represents an interesting and minimally invasive solution that might play a key role in the development of successful treatments. In particular, biocompatible and biodegradable hydrogels can be designed as specific injectable tools and loaded with nanoparticles (NPs), to improve and to tailor their viscoelastic properties upon injection and release profile. An intriguing application is hydrogel loading with mesenchymal stem cells (MSCs) that are a very promising therapeutic tool for neurodegenerative or traumatic disorders of the CNS. This multidisciplinary review will focus on the basic concepts to design acellular and cell-loaded materials with specific and tunable rheological and functional properties. The use of hydrogel-based nanocomposites and mesenchymal stem cells as a synergistic strategy for nervous tissue applications will be then discussed.
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14
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Erwin WM. Biologically based therapy for the intervertebral disk: who is the patient? Global Spine J 2013; 3:193-200. [PMID: 24436870 PMCID: PMC3854584 DOI: 10.1055/s-0033-1343074] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 02/04/2013] [Indexed: 12/25/2022] Open
Abstract
The intervertebral disk (IVD) is a fascinating and resilient tissue compartment given the myriad of functions that it performs as well as its unique anatomy. The IVD must tolerate immense loads, protect the spinal cord, and contribute considerable flexibility and strength to the spinal column. In addition, as a consequence of its anatomical and physiological configuration, a unique characteristic of the IVD is that it also provides a barrier to metastatic disease. However, when injured and/or the subject of significant degenerative change, the IVD can be the source of substantial pain and disability. Considerable efforts have been made over the past several decades with respect to regenerating or at least modulating degenerative changes affecting the IVD through the use of many biological agents such as growth factors, hydrogels, and the use of plant sterols and even spices common to Ayurvedic medicine. More recently stem/progenitor and autologous chondrocytes have been used mostly in animal models of disk disease but also a few trials involving humans. At the end of the day if biological therapies are to offer benefit to the patient, the outcomes must be improved function and/or less pain and also must be improvements upon measures that are already in clinical practice. Here some of the challenges posed by the degenerative IVD and a summary of some of the regenerative attempts both in vitro and in vivo are discussed within the context of the vital question: "Who is the patient?"
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Affiliation(s)
- William Mark Erwin
- Department of Surgery, Divisions of Orthopaedic and Neurological Surgery, Toronto Western Research Institute; University of Toronto, Toronto Western Hospital, Toronto, Ontario, Canada,Address for correspondence William Mark Erwin, DC, PhD University of Toronto, Toronto Western Hospital399 Bathurst Street, McLaughlin Pavilion Room 11-408, Toronto, OntarioCanada M5T 2S8
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Munarin F, Bozzini S, Visai L, Tanzi MC, Petrini P. Sterilization treatments on polysaccharides: Effects and side effects on pectin. Food Hydrocoll 2013. [DOI: 10.1016/j.foodhyd.2012.09.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Fattahi A, Petrini P, Munarin F, Shokoohinia Y, Golozar MA, Varshosaz J, Tanzi MC. Polysaccharides derived from tragacanth as biocompatible polymers and Gels. J Appl Polym Sci 2013. [DOI: 10.1002/app.38931] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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