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Hodge JG, Zamierowski DS, Robinson JL, Mellott AJ. Evaluating polymeric biomaterials to improve next generation wound dressing design. Biomater Res 2022; 26:50. [PMID: 36183134 PMCID: PMC9526981 DOI: 10.1186/s40824-022-00291-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 08/28/2022] [Indexed: 11/24/2022] Open
Abstract
Wound healing is a dynamic series of interconnected events with the ultimate goal of promoting neotissue formation and restoration of anatomical function. Yet, the complexity of wound healing can often result in development of complex, chronic wounds, which currently results in a significant strain and burden to our healthcare system. The advancement of new and effective wound care therapies remains a critical issue, with the current therapeutic modalities often remaining inadequate. Notably, the field of tissue engineering has grown significantly in the last several years, in part, due to the diverse properties and applications of polymeric biomaterials. The interdisciplinary cohesion of the chemical, biological, physical, and material sciences is pertinent to advancing our current understanding of biomaterials and generating new wound care modalities. However, there is still room for closing the gap between the clinical and material science realms in order to more effectively develop novel wound care therapies that aid in the treatment of complex wounds. Thus, in this review, we discuss key material science principles in the context of polymeric biomaterials, provide a clinical breadth to discuss how these properties affect wound dressing design, and the role of polymeric biomaterials in the innovation and design of the next generation of wound dressings.
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Affiliation(s)
- Jacob G Hodge
- Bioengineering Graduate Program, University of Kansas, Lawrence, KS, USA.,Department of Plastic Surgery, University of Kansas Medical Center, Kansas City, KS, USA
| | - David S Zamierowski
- Department of Plastic Surgery, University of Kansas Medical Center, Kansas City, KS, USA
| | - Jennifer L Robinson
- Department of Chemical and Petroleum Engineering, University of Kansas, Mail Stop: 3051, 3901 Rainbow Blvd, Lawrence, KS, 66160, USA
| | - Adam J Mellott
- Department of Plastic Surgery, University of Kansas Medical Center, Kansas City, KS, USA.
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2
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Dadhich P, Srivas PK, Das B, Pal P, Dutta J, Maity P, Guha Ray P, Roy S, Das SK, Dhara S. Direct 3D Printing of Seashell Precursor toward Engineering a Multiphasic Calcium Phosphate Bone Graft. ACS Biomater Sci Eng 2021; 7:3806-3820. [PMID: 34269559 DOI: 10.1021/acsbiomaterials.1c00303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Multiphasic calcium phosphate (Ca-P) has widely been explored for bone graft replacement. This study represents a simple method of developing osteoinductive scaffolds by direct printing of seashell resources. The process demonstrates a coagulation-assisted extrusion-based three-dimensional (3D) printing process for rapid fabrication of multiphasic calcium phosphate-incorporated 3D scaffolds. These scaffolds demonstrated an interconnected open porous architecture with improved compressive strength and higher surface area. Multiphasic calcium phosphate (Ca-P) and hydroxyapatite present in the multi-scalar naturally resourced scaffold displayed differential protein adsorption, thus facilitating cell adhesion, migration, and differentiation, resulting in enhanced deposition of the extracellular matrix. The microstructural and physicochemical attributes of the scaffolds also lead to enhanced stem cell differentiation as witnessed from gene and protein expression analysis. Furthermore, the histological study of subcutaneous implantation evidently portrays promising biocompatibility without foreign body reaction. Neo-tissue in-growth was manifested with abundant blood vessels, thus indicative of excellent vascularization. Notably, cartilaginous and proteoglycan-rich tissue deposition indicated ectopic bone formation via an endochondral ossification pathway. The hierarchical interconnected porous architectural tribology accompanied with multiphasic calcium phosphate composition manifests its successful implication in enhancing stem cell differentiation and promoting excellent tissue in-growth, thus making it a plausible alternative in bone tissue engineering applications.
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Affiliation(s)
- Prabhash Dadhich
- Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Pavan Kumar Srivas
- Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Bodhisatwa Das
- Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Pallabi Pal
- Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Joy Dutta
- Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Pritiprasanna Maity
- Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Preetam Guha Ray
- Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sabyasachi Roy
- Department of Gynaecology, Midnapore Medical College and Hospital, Midnapore, West Bengal 721101, India
| | - Subrata K Das
- Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Santanu Dhara
- Biomaterials and Tissue Engineering Laboratory, School of Medical Science and Technology (SMST), Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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3
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Nazeer MA, Karaoglu IC, Ozer O, Albayrak C, Kizilel S. Neovascularization of engineered tissues for clinical translation: Where we are, where we should be? APL Bioeng 2021; 5:021503. [PMID: 33834155 PMCID: PMC8024034 DOI: 10.1063/5.0044027] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/10/2021] [Indexed: 12/11/2022] Open
Abstract
One of the key challenges in engineering three-dimensional tissue constructs is the development of a mature microvascular network capable of supplying sufficient oxygen and nutrients to the tissue. Recent angiogenic therapeutic strategies have focused on vascularization of the constructed tissue, and its integration in vitro; these strategies typically combine regenerative cells, growth factors (GFs) with custom-designed biomaterials. However, the field needs to progress in the clinical translation of tissue engineering strategies. The article first presents a detailed description of the steps in neovascularization and the roles of extracellular matrix elements such as GFs in angiogenesis. It then delves into decellularization, cell, and GF-based strategies employed thus far for therapeutic angiogenesis, with a particularly detailed examination of different methods by which GFs are delivered in biomaterial scaffolds. Finally, interdisciplinary approaches involving advancement in biomaterials science and current state of technological development in fabrication techniques are critically evaluated, and a list of remaining challenges is presented that need to be solved for successful translation to the clinics.
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Affiliation(s)
| | | | - Onur Ozer
- Biomedical Sciences and Engineering, Koç University, Istanbul 34450, Turkey
| | - Cem Albayrak
- Authors to whom correspondence should be addressed: and
| | - Seda Kizilel
- Authors to whom correspondence should be addressed: and
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4
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Powell R, Eleftheriadou D, Kellaway S, Phillips JB. Natural Biomaterials as Instructive Engineered Microenvironments That Direct Cellular Function in Peripheral Nerve Tissue Engineering. Front Bioeng Biotechnol 2021; 9:674473. [PMID: 34113607 PMCID: PMC8185204 DOI: 10.3389/fbioe.2021.674473] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/16/2021] [Indexed: 12/25/2022] Open
Abstract
Nerve tissue function and regeneration depend on precise and well-synchronised spatial and temporal control of biological, physical, and chemotactic cues, which are provided by cellular components and the surrounding extracellular matrix. Therefore, natural biomaterials currently used in peripheral nerve tissue engineering are selected on the basis that they can act as instructive extracellular microenvironments. Despite emerging knowledge regarding cell-matrix interactions, the exact mechanisms through which these biomaterials alter the behaviour of the host and implanted cells, including neurons, Schwann cells and immune cells, remain largely unclear. Here, we review some of the physical processes by which natural biomaterials mimic the function of the extracellular matrix and regulate cellular behaviour. We also highlight some representative cases of controllable cell microenvironments developed by combining cell biology and tissue engineering principles.
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Affiliation(s)
- Rebecca Powell
- UCL Centre for Nerve Engineering, University College London, London, United Kingdom.,Department of Pharmacology, UCL School of Pharmacy, University College London, London, United Kingdom
| | - Despoina Eleftheriadou
- UCL Centre for Nerve Engineering, University College London, London, United Kingdom.,Department of Pharmacology, UCL School of Pharmacy, University College London, London, United Kingdom.,Department of Mechanical Engineering, University College London, London, United Kingdom
| | - Simon Kellaway
- UCL Centre for Nerve Engineering, University College London, London, United Kingdom.,Department of Pharmacology, UCL School of Pharmacy, University College London, London, United Kingdom
| | - James B Phillips
- UCL Centre for Nerve Engineering, University College London, London, United Kingdom.,Department of Pharmacology, UCL School of Pharmacy, University College London, London, United Kingdom
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5
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Seyed Jafari SM, Blank F, Ramser HE, Woessner AE, Shafighi M, Geiser T, Quinn KP, Hunger RE, Gazdhar A. Efficacy of Combined in-vivo Electroporation-Mediated Gene Transfer of VEGF, HGF, and IL-10 on Skin Flap Survival, Monitored by Label-Free Optical Imaging: A Feasibility Study. Front Surg 2021; 8:639661. [PMID: 33834037 PMCID: PMC8021947 DOI: 10.3389/fsurg.2021.639661] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/22/2021] [Indexed: 12/12/2022] Open
Abstract
Preventing surgical flaps necrosis remains challenging. Laser Doppler imaging and ultrasound can monitor blood flow in flap regions, but they do not directly measure the cellular response to ischemia. The study aimed to investigate the efficacy of synergistic in-vivo electroporation-mediated gene transfer of interleukin 10 (IL-10) with either hepatocyte growth factor (HGF) or vascular endothelial growth factor (VEGF) on the survival of a modified McFarlane flap, and to evaluate the effect of the treatment on cell metabolism, using label-free fluorescence lifetime imaging. Fifteen male Wistar rats (290–320 g) were randomly divided in three groups: group-A (control group) underwent surgery and received no gene transfer. Group-B received electroporation mediated hIL-10 gene delivery 24 h before and VEGF gene delivery 24 h after surgery. Group-C received electroporation mediated hIL-10 gene delivery 24 h before and hHGF gene delivery 24 h after surgery. The animals were assessed clinically and histologically. In addition, label-free fluorescence lifetime imaging was performed on the flap. Synergistic electroporation mediated gene delivery significantly decreased flap necrosis (P = 0.0079) and increased mean vessel density (P = 0.0079) in treatment groups B and C compared to control group-A. NADH fluorescence lifetime analysis indicated an increase in oxidative phosphorylation in the epidermis of the group-B (P = 0.039) relative to controls. These findings suggested synergistic in-vivo electroporation-mediated gene transfer as a promising therapeutic approach to enhance viability and vascularity of skin flap. Furthermore, the study showed that combinational gene therapy promoted an increase in tissue perfusion and a relative increase in oxidative metabolism within the epithelium.
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Affiliation(s)
| | - Fabian Blank
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland.,Department of Pulmonary Medicine, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Hallie E Ramser
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, United States
| | - Alan E Woessner
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, United States
| | | | - Thomas Geiser
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland.,Department of Pulmonary Medicine, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Kyle P Quinn
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, United States
| | - Robert E Hunger
- Department of Dermatology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Amiq Gazdhar
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland.,Department of Pulmonary Medicine, Inselspital, Bern University Hospital, Bern, Switzerland
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6
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Cosmetic, Biomedical and Pharmaceutical Applications of Fish Gelatin/Hydrolysates. Mar Drugs 2021; 19:md19030145. [PMID: 33800149 PMCID: PMC8000627 DOI: 10.3390/md19030145] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/27/2021] [Accepted: 03/01/2021] [Indexed: 12/12/2022] Open
Abstract
There are several reviews that separately cover different aspects of fish gelatin including its preparation, characteristics, modifications, and applications. Its packaging application in food industry is extensively covered but other applications are not covered or covered alongside with those of collagen. This review is comprehensive, specific to fish gelatin/hydrolysate and cites recent research. It covers cosmetic applications, intrinsic activities, and biomedical applications in wound dressing and wound healing, gene therapy, tissue engineering, implants, and bone substitutes. It also covers its pharmaceutical applications including manufacturing of capsules, coating of microparticles/oils, coating of tablets, stabilization of emulsions and drug delivery (microspheres, nanospheres, scaffolds, microneedles, and hydrogels). The main outcomes are that fish gelatin is immunologically safe, protects from the possibility of transmission of bovine spongiform encephalopathy and foot and mouth diseases, has an economic and environmental benefits, and may be suitable for those that practice religious-based food restrictions, i.e., people of Muslim, Jewish and Hindu faiths. It has unique rheological properties, making it more suitable for certain applications than mammalian gelatins. It can be easily modified to enhance its mechanical properties. However, extensive research is still needed to characterize gelatin hydrolysates, elucidate the Structure Activity Relationship (SAR), and formulate them into dosage forms. Additionally, expansion into cosmetic applications and drug delivery is needed.
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7
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Zhang L, Zhang W, Hu Y, Fei Y, Liu H, Huang Z, Wang C, Ruan D, Heng BC, Chen W, Shen W. Systematic Review of Silk Scaffolds in Musculoskeletal Tissue Engineering Applications in the Recent Decade. ACS Biomater Sci Eng 2021; 7:817-840. [PMID: 33595274 DOI: 10.1021/acsbiomaterials.0c01716] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
During the past decade, various novel tissue engineering (TE) strategies have been developed to maintain, repair, and restore the biomechanical functions of the musculoskeletal system. Silk fibroins are natural polymers with numerous advantageous properties such as good biocompatibility, high mechanical strength, and low degradation rate and are increasingly being recognized as a scaffolding material of choice in musculoskeletal TE applications. This current systematic review examines and summarizes the latest research on silk scaffolds in musculoskeletal TE applications within the past decade. Scientific databases searched include PubMed, Web of Science, Medline, Cochrane library, and Embase. The following keywords and search terms were used: musculoskeletal, tendon, ligament, intervertebral disc, muscle, cartilage, bone, silk, and tissue engineering. Our Review was limited to articles on musculoskeletal TE, which were published in English from 2010 to September 2019. The eligibility of the articles was assessed by two reviewers according to prespecified inclusion and exclusion criteria, after which an independent reviewer performed data extraction and a second independent reviewer validated the data obtained. A total of 1120 articles were reviewed from the databases. According to inclusion and exclusion criteria, 480 articles were considered as relevant for the purpose of this systematic review. Tissue engineering is an effective modality for repairing or replacing injured or damaged tissues and organs with artificial materials. This Review is intended to reveal the research status of silk-based scaffolds in the musculoskeletal system within the recent decade. In addition, a comprehensive translational research route for silk biomaterial from bench to bedside is described in this Review.
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Affiliation(s)
- Li Zhang
- Department of Orthopedic Surgery of The Second Affiliated Hospital and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.,Department of Orthopaedics, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Wei Zhang
- School of Medicine, Southeast University, Nanjing, Jiangsu 210009, China.,Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing, Jiangsu 210096, China
| | - Yejun Hu
- Department of Orthopedic Surgery of The Second Affiliated Hospital and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.,Orthopaedics Research Institute, Zhejiang Univerisity, Hangzhou, Zhejiang 310000, China
| | - Yang Fei
- Department of Orthopedic Surgery of The Second Affiliated Hospital and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.,Orthopaedics Research Institute, Zhejiang Univerisity, Hangzhou, Zhejiang 310000, China
| | - Haoyang Liu
- School of Medicine, Southeast University, Nanjing, Jiangsu 210009, China.,Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing, Jiangsu 210096, China
| | - Zizhan Huang
- Department of Orthopedic Surgery of The Second Affiliated Hospital and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.,Orthopaedics Research Institute, Zhejiang Univerisity, Hangzhou, Zhejiang 310000, China
| | - Canlong Wang
- Department of Orthopedic Surgery of The Second Affiliated Hospital and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.,Orthopaedics Research Institute, Zhejiang Univerisity, Hangzhou, Zhejiang 310000, China
| | - Dengfeng Ruan
- Department of Orthopedic Surgery of The Second Affiliated Hospital and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.,Orthopaedics Research Institute, Zhejiang Univerisity, Hangzhou, Zhejiang 310000, China
| | | | - Weishan Chen
- Department of Orthopedic Surgery of The Second Affiliated Hospital and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.,Orthopaedics Research Institute, Zhejiang Univerisity, Hangzhou, Zhejiang 310000, China
| | - Weiliang Shen
- Department of Orthopedic Surgery of The Second Affiliated Hospital and Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.,Department of Sports Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310000, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Key Laboratory of Sports System Disease Research and Accurate Diagnosis and Treatment of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Orthopaedics Research Institute, Zhejiang Univerisity, Hangzhou, Zhejiang 310000, China.,China Orthopaedic Regenerative Medicine (CORMed), Chinese Medical Association, Hangzhou, Zhejiang, China
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8
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Schoonraad SA, Trombold ML, Bryant SJ. The Effects of Stably Tethered BMP-2 on MC3T3-E1 Preosteoblasts Encapsulated in a PEG Hydrogel. Biomacromolecules 2021; 22:1065-1079. [PMID: 33555180 DOI: 10.1021/acs.biomac.0c01085] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Bone morphogenetic protein-2 (BMP-2) is a clinically used osteoinductive growth factor. With a short half-life and side effects, alternative delivery approaches are needed. This work examines thiolation of BMP-2 for chemical attachment to a poly(ethylene glycol) hydrogel using thiol-norbornene click chemistry. BMP-2 retained bioactivity post-thiolation and was successfully tethered into the hydrogel. To assess tethered BMP-2 on osteogenesis, MC3T3-E1 preosteoblasts were encapsulated in matrix metalloproteinase (MMP)-sensitive hydrogels containing RGD and either no BMP-2, soluble BMP-2 (5 nM), or tethered BMP-2 (40-200 nM) and cultured in a chemically defined medium containing dexamethasone for 7 days. The hydrogel culture supported MC3T3-E1 osteogenesis regardless of BMP-2 presentation, but tethered BMP-2 augmented the osteogenic response, leading to significant increases in osteomarkers, Bglap and Ibsp. The ratio, Ibsp-to-Dmp1, highlighted differences in the extent of differentiation, revealing that without BMP-2, MC3T3-E1 cells showed a higher expression of Dmp1 (low ratio), but an equivalent expression with tethered BMP-2 and more abundant bone sialoprotein. In addition, this work identified that dexamethasone contributed to Ibsp expression but not Bglap or Dmp1 and confirmed that tethered BMP-2 induced the BMP canonical signaling pathway. This work presents an effective method for the modification and incorporation of BMP-2 into hydrogels to enhance osteogenesis.
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Affiliation(s)
- Sarah A Schoonraad
- Materials Science & Engineering Program, University of Colorado, Boulder, Colorado 80309, United States
| | - Michael L Trombold
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Stephanie J Bryant
- Materials Science & Engineering Program, University of Colorado, Boulder, Colorado 80309, United States.,Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States.,Biofrontiers Institute, University of Colorado, Boulder, Colorado 80309, United States
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9
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Wang J, Su Y, Xu L, Li D. Micro-patterned surface construction on BCP ceramics and the regulation on inflammation-involved osteogenic differentiation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111220. [DOI: 10.1016/j.msec.2020.111220] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/09/2020] [Accepted: 06/18/2020] [Indexed: 02/07/2023]
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10
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Palomino-Durand C, Lopez M, Marchandise P, Martel B, Blanchemain N, Chai F. Chitosan/Polycyclodextrin (CHT/PCD)-Based Sponges Delivering VEGF to Enhance Angiogenesis for Bone Regeneration. Pharmaceutics 2020; 12:pharmaceutics12090784. [PMID: 32825081 PMCID: PMC7557476 DOI: 10.3390/pharmaceutics12090784] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/11/2020] [Accepted: 08/15/2020] [Indexed: 02/07/2023] Open
Abstract
Vascularization is one of the main challenges in bone tissue engineering (BTE). In this study, vascular endothelial growth factor (VEGF), known for its angiogenic effect, was delivered by our developed sponge, derived from a polyelectrolyte complexes hydrogel between chitosan (CHT) and anionic cyclodextrin polymer (PCD). This sponge, as a scaffold for growth factor delivery, was formed by freeze-drying a homogeneous CHT/PCD hydrogel, and thereafter stabilized by a thermal treatment. Microstructure, water-uptake, biodegradation, mechanical properties, and cytocompatibility of sponges were assessed. VEGF-delivery following incubation in medium was then evaluated by monitoring the VEGF-release profile and its bioactivity. CHT/PCD sponge showed a porous (open porosity of 87.5%) interconnected microstructure with pores of different sizes (an average pore size of 153 μm), a slow biodegradation (12% till 21 days), a high water-uptake capacity (~600% in 2 h), an elastic property under compression (elastic modulus of compression 256 ± 4 kPa), and a good cytocompatibility in contact with osteoblast and endothelial cells. The kinetic release of VEGF was found to exert a pro-proliferation and a pro-migration effect on endothelial cells, which are two important processes during scaffold vascularization. Hence, CHT/PCD sponges were promising vehicles for the delivery of growth factors in BTE.
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Affiliation(s)
- Carla Palomino-Durand
- U1008 Controlled Drug Delivery Systems and Biomaterials, Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Régional Universitaire de Lille (CHU Lille), University of Lille, 59000 Lille, France; (C.P.-D.); (M.L.); (N.B.)
| | - Marco Lopez
- U1008 Controlled Drug Delivery Systems and Biomaterials, Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Régional Universitaire de Lille (CHU Lille), University of Lille, 59000 Lille, France; (C.P.-D.); (M.L.); (N.B.)
| | - Pierre Marchandise
- ULR 4490–MABLab–Adiposité Médullaire et Os, Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Régional Universitaire de Lille (CHU Lille), University of Lille, 59000 Lille, France;
- ULR 4490–MABLab–Adiposité Médullaire et Os, Univ. Littoral Côte d’Opale, 62200 Boulogne-sur-Mer, France
| | - Bernard Martel
- UMR 8207, UMET—Unité Matériaux et Transformations, Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA), Ecole Nationale Supérieure de Chimie de Lille (ENSCL), University of Lille, 59655 Lille, France;
| | - Nicolas Blanchemain
- U1008 Controlled Drug Delivery Systems and Biomaterials, Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Régional Universitaire de Lille (CHU Lille), University of Lille, 59000 Lille, France; (C.P.-D.); (M.L.); (N.B.)
| | - Feng Chai
- U1008 Controlled Drug Delivery Systems and Biomaterials, Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Régional Universitaire de Lille (CHU Lille), University of Lille, 59000 Lille, France; (C.P.-D.); (M.L.); (N.B.)
- Correspondence: ; Tel.: +33-320-626-997
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11
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Jordahl S, Solorio L, Neale DB, McDermott S, Jordahl JH, Fox A, Dunlay C, Xiao A, Brown M, Wicha M, Luker GD, Lahann J. Engineered Fibrillar Fibronectin Networks as Three-Dimensional Tissue Scaffolds. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1904580. [PMID: 31565823 PMCID: PMC6851443 DOI: 10.1002/adma.201904580] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Indexed: 05/19/2023]
Abstract
Extracellular matrix (ECM) proteins, and most prominently, fibronectin (Fn), are routinely used in the form of adsorbed pre-coatings in an attempt to create a cell-supporting environment in both two- and three-dimensional cell culture systems. However, these protein coatings are typically deposited in a form which is structurally and functionally distinct from the ECM-constituting fibrillar protein networks naturally deposited by cells. Here, the cell-free and scalable synthesis of freely suspended and mechanically robust three-dimensional (3D) networks of fibrillar fibronectin (fFn) supported by tessellated polymer scaffolds is reported. Hydrodynamically induced Fn fibrillogenesis at the three-phase contact line between air, an Fn solution, and a tessellated scaffold microstructure yields extended protein networks. Importantly, engineered fFn networks promote cell invasion and proliferation, enable in vitro expansion of primary cancer cells, and induce an epithelial-to-mesenchymal transition in cancer cells. Engineered fFn networks support the formation of multicellular cancer structures cells from plural effusions of cancer patients. With further work, engineered fFn networks can have a transformative impact on fundamental cell studies, precision medicine, pharmaceutical testing, and pre-clinical diagnostics.
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Affiliation(s)
- Stacy Jordahl
- Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA
| | - Luis Solorio
- Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA
| | - Dylan B Neale
- Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA
| | - Sean McDermott
- Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA
| | - Jacob H Jordahl
- Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA
| | - Alexandra Fox
- Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA
| | - Christopher Dunlay
- Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA
| | - Annie Xiao
- Department of Radiology, Microbiology and Immunology, Biomedical Engineering, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Martha Brown
- Department of Internal Medicine, University of Michigan, 1500 E Medical Center Dr SPC 5916, Ann Arbor, MI, 48109, USA
| | - Max Wicha
- Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA
| | - Gary D Luker
- Department of Radiology, Microbiology and Immunology, Biomedical Engineering, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Joerg Lahann
- Biointerfaces Institute, Departments of Chemical Engineering, Materials Science and Engineering, Biomedical Engineering, and Macromolecular Science and Engineering, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI, 48109, USA
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12
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Wang Y, Lan H, Yin T, Zhang X, Huang J, Fu H, Huang J, McGinty S, Gao H, Wang G, Wang Z. Covalent immobilization of biomolecules on stent materials through mussel adhesive protein coating to form biofunctional films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 106:110187. [PMID: 31753395 DOI: 10.1016/j.msec.2019.110187] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 10/22/2018] [Accepted: 09/09/2019] [Indexed: 11/16/2022]
Abstract
It is widely accepted that surface biofunctional modification may be an effective approach to improve biocompatibility and confer new bioactive properties on biomaterials. In this work, mussel adhesive protein (MAP) was applied as a coating on 316 L stainless steel substrates (316 L SS) and stents, and then either immobilized VEGF or CD34 antibody were added to create biofunctional films. The properties of the MAP coating were characterized by scanning electron microscope (SEM), atomic force microscope (AFM) and a water contact angle test. Universal tensile testing showed that the MAP coating has adequate adhesion strength on a 316 L stainless steel material surface. Subsequent cytotoxicity and hemolysis rate tests showed that the MAP coatings have good biocompatibility. Moreover, using N-(3-Dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride and N-hydroxysulfosussinimide (EDC/NHS) chemistry, VEGF and CD34 antibody were immobilized on the MAP coatings. The amount and immobilized yield of VEGF on the MAP coatings were analyzed by enzyme-linked immuno-assays (ELISA). Finally, an endothelial cells culture showed that the VEGF biofunctional film can promote the viability and proliferation of endothelial cells. An in vitro CD34+ cells capturing test also verified the bioactive properties of the CD34 antibody coated stents. These results showed that the MAP coatings allowed effective biomolecule immobilization, providing a promising platform for vascular device modification.
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Affiliation(s)
- Yi Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Hualin Lan
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Tieying Yin
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China.
| | - Xiaojuan Zhang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Junyang Huang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Haiyang Fu
- Laboratory of Biomaterials and Tissues Engineering, National Institutes for Food and Drug Control, Beijing, China
| | - Junli Huang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China
| | - Sean McGinty
- Division of Biomedical Engineering, University of Glasgow, Glasgow, UK
| | - Hao Gao
- School of Mathematics and Statistics, University of Glasgow, Glasgow, UK
| | - Guixue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering at Chongqing University, Chongqing, China.
| | - Zhaoxu Wang
- Laboratory of Biomaterials and Tissues Engineering, National Institutes for Food and Drug Control, Beijing, China.
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13
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Biomaterials: Foreign Bodies or Tuners for the Immune Response? Int J Mol Sci 2019; 20:ijms20030636. [PMID: 30717232 PMCID: PMC6386828 DOI: 10.3390/ijms20030636] [Citation(s) in RCA: 321] [Impact Index Per Article: 64.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/22/2019] [Accepted: 01/28/2019] [Indexed: 12/11/2022] Open
Abstract
The perspectives of regenerative medicine are still severely hampered by the host response to biomaterial implantation, despite the robustness of technologies that hold the promise to recover the functionality of damaged organs and tissues. In this scenario, the cellular and molecular events that decide on implant success and tissue regeneration are played at the interface between the foreign body and the host inflammation, determined by innate and adaptive immune responses. To avoid adverse events, rather than the use of inert scaffolds, current state of the art points to the use of immunomodulatory biomaterials and their knowledge-based use to reduce neutrophil activation, and optimize M1 to M2 macrophage polarization, Th1 to Th2 lymphocyte switch, and Treg induction. Despite the fact that the field is still evolving and much remains to be accomplished, recent research breakthroughs have provided a broader insight on the correct choice of biomaterial physicochemical modifications to tune the reaction of the host immune system to implanted biomaterial and to favor integration and healing.
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14
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Bellassai N, Marti A, Spoto G, Huskens J. Low-fouling, mixed-charge poly-l-lysine polymers with anionic oligopeptide side-chains. J Mater Chem B 2018; 6:7662-7673. [PMID: 32254888 DOI: 10.1039/c8tb01619d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Biosensors and biomedical devices require antifouling surfaces to prevent the non-specific adhesion of proteins or cells, for example, when aiming to detect circulating cancer biomarkers in complex natural media (e.g., in blood plasma or serum). A mixed-charge polymer was prepared by the coupling of a cationic polyelectrolyte and an anionic oligopeptide through a modified "grafting-to" method. The poly-l-lysine (PLL) backbone was modified with different percentages (y%) of maleimide-NHS ester chains (PLL-mal(y%), from 13% to 26%), to produce cationic polymers with specific grafting densities, obtaining a mixed-charge polymer. The anionic oligopeptide structure (CEEEEE) included one cysteine (C) and five glutamic acid (E) units, which were attached to the PLL-mal(y%) polymers, preadsorbed on gold substrates, through the thiol-maleimide Michael-type addition. Contact angle and PM-IRRAS data confirmed monolayer formation of the modified PLLs. Antifouling properties of peptide-PLL surfaces were assessed in adsorption studies using quartz crystal microbalance with dissipation (QCM-D) and surface plasmon resonance imaging (SPRI) techniques. PLL-mal(26%)-CEEEEE showed the best antifouling performance in single-protein solutions, and the nonspecific adsorption of proteins was 46 ng cm-2 using diluted human plasma samples. The new PLL-mal(26%)-CEEEEE polymer offers a prominent low-fouling activity in complex media, with rapid and simple procedures for the synthesis and functionalization of the surface compared to conventional non-fouling materials.
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Affiliation(s)
- Noemi Bellassai
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici, c/o Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Catania, Italy
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15
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Zhou G, Groth T. Host Responses to Biomaterials and Anti-Inflammatory Design-a Brief Review. Macromol Biosci 2018; 18:e1800112. [DOI: 10.1002/mabi.201800112] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/08/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Guoying Zhou
- Biomedical Materials Group; Institute of Pharmacy; Martin Luther University Halle-Wittenberg; 06099 Halle (Saale) Germany
| | - Thomas Groth
- Biomedical Materials Group; Institute of Pharmacy and, Interdisciplinary Center of Material Science and Interdisciplinary Center for Transfer-Oriented Research in Natural Sciences; Martin Luther University Halle-Wittenberg; 06099 Halle (Saale) Germany
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16
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Abstract
This review is focused on the use of membranes for the specific application of bone regeneration. The first section focuses on the relevance of membranes in this context and what are the specifications that they should possess to improve the regeneration of bone. Afterward, several techniques to engineer bone membranes by using "bulk"-like methods are discussed, where different parameters to induce bone formation are disclosed in a way to have desirable structural and functional properties. Subsequently, the production of nanostructured membranes using a bottom-up approach is discussed by highlighting the main advances in the field of bone regeneration. Primordial importance is given to the promotion of osteoconductive and osteoinductive capability during the membrane design. Whenever possible, the films prepared using different techniques are compared in terms of handability, bone guiding ability, osteoinductivity, adequate mechanical properties, or biodegradability. A last chapter contemplates membranes only composed by cells, disclosing their potential to regenerate bone.
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Affiliation(s)
- Sofia G Caridade
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
| | - João F Mano
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
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17
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Shimanovich U, Michaels TCT, De Genst E, Matak-Vinkovic D, Dobson CM, Knowles TPJ. Sequential Release of Proteins from Structured Multishell Microcapsules. Biomacromolecules 2017; 18:3052-3059. [PMID: 28792742 DOI: 10.1021/acs.biomac.7b00351] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In nature, a wide range of functional materials is based on proteins. Increasing attention is also turning to the use of proteins as artificial biomaterials in the form of films, gels, particles, and fibrils that offer great potential for applications in areas ranging from molecular medicine to materials science. To date, however, most such applications have been limited to single component materials despite the fact that their natural analogues are composed of multiple types of proteins with a variety of functionalities that are coassembled in a highly organized manner on the micrometer scale, a process that is currently challenging to achieve in the laboratory. Here, we demonstrate the fabrication of multicomponent protein microcapsules where the different components are positioned in a controlled manner. We use molecular self-assembly to generate multicomponent structures on the nanometer scale and droplet microfluidics to bring together the different components on the micrometer scale. Using this approach, we synthesize a wide range of multiprotein microcapsules containing three well-characterized proteins: glucagon, insulin, and lysozyme. The localization of each protein component in multishell microcapsules has been detected by labeling protein molecules with different fluorophores, and the final three-dimensional microcapsule structure has been resolved by using confocal microscopy together with image analysis techniques. In addition, we show that these structures can be used to tailor the release of such functional proteins in a sequential manner. Moreover, our observations demonstrate that the protein release mechanism from multishell capsules is driven by the kinetic control of mass transport of the cargo and by the dissolution of the shells. The ability to generate artificial materials that incorporate a variety of different proteins with distinct functionalities increases the breadth of the potential applications of artificial protein-based materials and provides opportunities to design more refined functional protein delivery systems.
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Affiliation(s)
- Ulyana Shimanovich
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom.,Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot 76100, Israel
| | - Thomas C T Michaels
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom.,School of Engineering and Applied Sciences, Harvard University , Cambridge, Massachusetts 02138, United States
| | - Erwin De Genst
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Dijana Matak-Vinkovic
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Christopher M Dobson
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Tuomas P J Knowles
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom.,Cavendish Laboratory, Department of Physics, University of Cambridge , J J Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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18
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Luan Y, Li D, Wei T, Wang M, Tang Z, Brash JL, Chen H. “Hearing Loss” in QCM Measurement of Protein Adsorption to Protein Resistant Polymer Brush Layers. Anal Chem 2017; 89:4184-4191. [DOI: 10.1021/acs.analchem.7b00198] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yafei Luan
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, People’s Republic of China
| | - Dan Li
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, People’s Republic of China
| | - Ting Wei
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, People’s Republic of China
| | - Mengmeng Wang
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, People’s Republic of China
| | - Zengchao Tang
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, People’s Republic of China
| | - John L. Brash
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, People’s Republic of China
- School
of Biomedical Engineering and Department of Chemical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Hong Chen
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, People’s Republic of China
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19
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Yang F, Liu W, Yan X, Zhou H, Zhang H, Liu J, Yu M, Zhu X, Ma K. Effects of mir-21 on Cardiac Microvascular Endothelial Cells After Acute Myocardial Infarction in Rats: Role of Phosphatase and Tensin Homolog (PTEN)/Vascular Endothelial Growth Factor (VEGF) Signal Pathway. Med Sci Monit 2016; 22:3562-3575. [PMID: 27708252 PMCID: PMC5056537 DOI: 10.12659/msm.897773] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Background This study investigated how miR-21 expression is reflected in acute myocardial infarction and explored the role of miR-21 and the PTEN/VEGF signaling pathway in cardiac microvascular endothelial cells. Material/Methods We used an in vivo LAD rat model to simulate acute myocardial infarction. MiR-21 mimics and miR-21 inhibitors were injected and transfected into model rats in order to alter miR-21 expression. Cardiac functions were evaluated using echocardiographic measurement, ELISA, and Masson staining. In addition, lenti-PTEN and VEGF siRNA were transfected into CMEC cells using standard procedures for assessing the effect of PTEN and VEGE on cell proliferation, apoptosis, and angiogenesis. MiR-21, PTEN, and VEGF expressions were examined by RT-PCR and Western blot. The relationship between miR-21 and PTEN was determined by the luciferase activity assay. Results We demonstrated that miR-21 bonded with the 3′-UTR of PTEN and suppressed PTEN expressions. Established models significantly induced cardiac infarct volume and endothelial injury marker expressions as well as miR-21 and PTEN expressions (P<0.05). MiR-21 mimics exhibited significantly protective effects since they down-regulated both infarction size and injury marker expressions by increasing VEGF expression and inhibiting PTEN expression (P<0.05). In addition, results from in vitro research show that lenti-PTEN and VEGF siRNA can notably antagonize the effect of miR-21 on cell proliferation, apoptosis, and angiogenesis (P<0.05). Conclusions MiR-21 exerts protective effects on endothelial injury through the PTEN/VEGF pathway after acute myocardial infarction.
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Affiliation(s)
- Feng Yang
- Department of Cardiology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China (mainland)
| | - Wenwei Liu
- Department of Cardiology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China (mainland)
| | - Xiaojuan Yan
- Department of Respiratory Medicine, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China (mainland)
| | - Hanyun Zhou
- Department of Cardiology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China (mainland)
| | - Hongshen Zhang
- Department of Cardiology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China (mainland)
| | - Jianfei Liu
- Department of Cardiology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China (mainland)
| | - Ming Yu
- Department of Cardiology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China (mainland)
| | - Xiaoshan Zhu
- Department of Cardiology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China (mainland)
| | - Kezhong Ma
- Department of Cardiology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, China (mainland)
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20
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Covalent Immobilization of Glycosaminoglycans to Reduce the Inflammatory Effects of Biomaterials. Int J Artif Organs 2016; 39:37-44. [DOI: 10.5301/ijao.5000468] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2016] [Indexed: 12/28/2022]
Abstract
Background The inflammatory responses evoked by artificial organs and implantation of devices like biosensors and guide wires can lead to acute and chronic inflammation, largely limiting the functionality and longevity of the devices with negative effects on patients. Aims The present study aimed to reduce the inflammatory responses to biomaterials by covalent immobilization of glycosaminoglycans (GAGs) on amino-terminated surfaces used as model biomaterials here. Methods and Results Water contact angle (WCA) and zeta potential measurements showed a significant increase in wettability and negative charges on the GAG-modified surfaces, respectively, confirming the successful immobilization of GAGs on the amino-terminated surfaces. THP-1-derived macrophages were used as a model cell type to investigate the efficacy of GAG-modified surfaces in modulating inflammatory responses. It was found that macrophage adhesion, macrophage spreading morphology, foreign body giant cell (FBGC) formation, as well as β1 integrin expression and interleukin-1β (IL-1β) production were all significantly decreased on GAG-modified surfaces compared to the initial amino-terminated surface. Conclusions This study demonstrates the potential of covalent GAG immobilization to reduce the inflammatory potential of biomaterials in different clinical settings.
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21
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Grim JC, Marozas IA, Anseth KS. Thiol-ene and photo-cleavage chemistry for controlled presentation of biomolecules in hydrogels. J Control Release 2015; 219:95-106. [PMID: 26315818 DOI: 10.1016/j.jconrel.2015.08.040] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 08/18/2015] [Accepted: 08/20/2015] [Indexed: 12/21/2022]
Abstract
Hydrogels have emerged as promising scaffolds in regenerative medicine for the delivery of biomolecules to promote healing. However, increasing evidence suggests that the context that biomolecules are presented to cells (e.g., as soluble verses tethered signals) can influence their bioactivity. A common approach to deliver biomolecules in hydrogels involves physically entrapping them within the network, such that they diffuse out over time to the surrounding tissues. While simple and versatile, the release profiles in such system are highly dependent on the molecular weight of the entrapped molecule relative to the network structure, and it can be difficult to control the release of two different signals at independent rates. In some cases, supraphysiologically high loadings are used to achieve therapeutic local concentrations, but uncontrolled release can then cause deleterious off-target side effects. In vivo, many growth factors and cytokines are stored in the extracellular matrix (ECM) and released on demand as needed during development, growth, and wound healing. Thus, emerging strategies in biomaterial chemistry have focused on ways to tether or sequester biological signals and engineer these bioactive scaffolds to signal to delivered cells or endogenous cells. While many strategies exist to achieve tethering of peptides, protein, and small molecules, this review focuses on photochemical methods, and their usefulness as a mild reaction that proceeds with fast kinetics in aqueous solutions and at physiological conditions. Photo-click and photo-caging methods are particularly useful because one can direct light to specific regions of the hydrogel to achieve spatial patterning. Recent methods have even demonstrated reversible introduction of biomolecules to mimic the dynamic changes of native ECM, enabling researchers to explore how the spatial and dynamic context of biomolecular signals influences important cell functions. This review will highlight how two photochemical methods have led to important advances in the tissue regeneration community, namely the thiol-ene photo-click reaction for bioconjugation and photocleavage reactions that allow for the removal of protecting groups. Specific examples will be highlighted where these methodologies have been used to engineer hydrogels that control and direct cell function with the aim of inspiring their use in regenerative medicine.
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Affiliation(s)
- Joseph C Grim
- Howard Hughes Medical Institute, University of Colorado at Boulder, Boulder, CO 80309, USA
| | - Ian A Marozas
- Department of Chemical and Biological Engineering, University of Colorado at Boulder, Boulder, CO 80309, USA; BioFrontiers Institute, University of Colorado at Boulder, Boulder, CO 80309, USA
| | - Kristi S Anseth
- Howard Hughes Medical Institute, University of Colorado at Boulder, Boulder, CO 80309, USA; Department of Chemical and Biological Engineering, University of Colorado at Boulder, Boulder, CO 80309, USA; BioFrontiers Institute, University of Colorado at Boulder, Boulder, CO 80309, USA.
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22
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Hajimiri M, Shahverdi S, Esfandiari MA, Larijani B, Atyabi F, Rajabiani A, Dehpour AR, Amini M, Dinarvand R. Preparation of hydrogel embedded polymer-growth factor conjugated nanoparticles as a diabetic wound dressing. Drug Dev Ind Pharm 2015; 42:707-19. [DOI: 10.3109/03639045.2015.1075030] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Mirhamed Hajimiri
- Nanomedicine and Biomaterial Laboratory, Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
- Nano Alvand Co., Avicenna Tech Park, Tehran University of Medical Sciences, Tehran, Iran,
| | - Sheida Shahverdi
- Nanomedicine and Biomaterial Laboratory, Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
| | - Mohammad Amin Esfandiari
- Nanomedicine and Biomaterial Laboratory, Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center (EMRC), Tehran University Medical Sciences, Tehran, Iran,
| | - Fatemeh Atyabi
- Nanomedicine and Biomaterial Laboratory, Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
| | - Afsaneh Rajabiani
- Department of Pathology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran,
| | - Ahmad Reza Dehpour
- Department of Pharmacology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran, and
| | - Mohsen Amini
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Rassoul Dinarvand
- Nanomedicine and Biomaterial Laboratory, Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
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23
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Miller KJ, Brown DA, Ibrahim MM, Ramchal TD, Levinson H. MicroRNAs in skin tissue engineering. Adv Drug Deliv Rev 2015; 88:16-36. [PMID: 25953499 DOI: 10.1016/j.addr.2015.04.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 04/04/2015] [Accepted: 04/25/2015] [Indexed: 01/08/2023]
Abstract
35.2 million annual cases in the U.S. require clinical intervention for major skin loss. To meet this demand, the field of skin tissue engineering has grown rapidly over the past 40 years. Traditionally, skin tissue engineering relies on the "cell-scaffold-signal" approach, whereby isolated cells are formulated into a three-dimensional substrate matrix, or scaffold, and exposed to the proper molecular, physical, and/or electrical signals to encourage growth and differentiation. However, clinically available bioengineered skin equivalents (BSEs) suffer from a number of drawbacks, including time required to generate autologous BSEs, poor allogeneic BSE survival, and physical limitations such as mass transfer issues. Additionally, different types of skin wounds require different BSE designs. MicroRNA has recently emerged as a new and exciting field of RNA interference that can overcome the barriers of BSE design. MicroRNA can regulate cellular behavior, change the bioactive milieu of the skin, and be delivered to skin tissue in a number of ways. While it is still in its infancy, the use of microRNAs in skin tissue engineering offers the opportunity to both enhance and expand a field for which there is still a vast unmet clinical need. Here we give a review of skin tissue engineering, focusing on the important cellular processes, bioactive mediators, and scaffolds. We further discuss potential microRNA targets for each individual component, and we conclude with possible future applications.
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Kinetics and thermodynamics studies on the BMP-2 adsorption onto hydroxyapatite surface with different multi-morphological features. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 52:251-8. [DOI: 10.1016/j.msec.2015.03.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 02/16/2015] [Accepted: 03/23/2015] [Indexed: 11/20/2022]
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25
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Seelbach RJ, Fransen P, Pulido D, D'Este M, Duttenhoefer F, Sauerbier S, Freiman TM, Niemeyer P, Albericio F, Alini M, Royo M, Mata A, Eglin D. Injectable Hyaluronan Hydrogels with Peptide-Binding Dendrimers Modulate the Controlled Release of BMP-2 and TGF-β1. Macromol Biosci 2015; 15:1035-44. [DOI: 10.1002/mabi.201500082] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 04/10/2015] [Indexed: 12/24/2022]
Affiliation(s)
- Ryan J. Seelbach
- AO Research Institute Davos; Clavadelerstrasse 8 7270 Davos Platz Switzerland
- Universitat de Barcelona; Martí i Franquès 1 08028 Barcelona Spain
| | - Peter Fransen
- Institute of Research in Biomedicine; Baldiri Reixac 10-12 08028 Barcelona Spain
- Biomedical Research Networking Center in Bioengineering; Biomaterials and Nanomedicine; Baldiri Reixac 10-12 08028 Barcelona Spain
| | - Daniel Pulido
- Biomedical Research Networking Center in Bioengineering; Biomaterials and Nanomedicine; Baldiri Reixac 10-12 08028 Barcelona Spain
| | - Matteo D'Este
- AO Research Institute Davos; Clavadelerstrasse 8 7270 Davos Platz Switzerland
| | | | | | - Thomas M. Freiman
- Universitätsklinikum Goethe Universität; Schleusenweg 2-16 D-60538 Frankfurt am Main Germany
| | - Philipp Niemeyer
- Universitätsklinik Freiburg; Hugstetter Str. 55 D-79106 Freiburg Germany
| | - Fernando Albericio
- Institute of Research in Biomedicine; Baldiri Reixac 10-12 08028 Barcelona Spain
- Biomedical Research Networking Center in Bioengineering; Biomaterials and Nanomedicine; Baldiri Reixac 10-12 08028 Barcelona Spain
| | - Mauro Alini
- AO Research Institute Davos; Clavadelerstrasse 8 7270 Davos Platz Switzerland
| | - Miriam Royo
- Biomedical Research Networking Center in Bioengineering; Biomaterials and Nanomedicine; Baldiri Reixac 10-12 08028 Barcelona Spain
- Combinatorial Chemistry Unit; Barcelona Science Park; Baldiri Reixac 10-12 08028 Barcelona Spain
| | - Alvaro Mata
- Queen Mary; University of London; Mile End Road E1 4NS London UK
| | - David Eglin
- AO Research Institute Davos; Clavadelerstrasse 8 7270 Davos Platz Switzerland
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26
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Zhao Z, Li Y, Xie MB. Silk fibroin-based nanoparticles for drug delivery. Int J Mol Sci 2015; 16:4880-903. [PMID: 25749470 PMCID: PMC4394455 DOI: 10.3390/ijms16034880] [Citation(s) in RCA: 165] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 02/01/2015] [Accepted: 02/02/2015] [Indexed: 01/12/2023] Open
Abstract
Silk fibroin (SF) is a protein-based biomacromolecule with excellent biocompatibility, biodegradability and low immunogenicity. The development of SF-based nanoparticles for drug delivery have received considerable attention due to high binding capacity for various drugs, controlled drug release properties and mild preparation conditions. By adjusting the particle size, the chemical structure and properties, the modified or recombinant SF-based nanoparticles can be designed to improve the therapeutic efficiency of drugs encapsulated into these nanoparticles. Therefore, they can be used to deliver small molecule drugs (e.g., anti-cancer drugs), protein and growth factor drugs, gene drugs, etc. This paper reviews recent progress on SF-based nanoparticles, including chemical structure, properties, and preparation methods. In addition, the applications of SF-based nanoparticles as carriers for therapeutic drugs are also reviewed.
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Affiliation(s)
- Zheng Zhao
- State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
- Institute of Textiles and Clothing, the Hong Kong Polytechnic University, Hong Kong 999077, China.
- Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China.
| | - Yi Li
- Institute of Textiles and Clothing, the Hong Kong Polytechnic University, Hong Kong 999077, China.
| | - Mao-Bin Xie
- Institute of Textiles and Clothing, the Hong Kong Polytechnic University, Hong Kong 999077, China.
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27
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Alhalawani AMF, Rodriguez O, Curran DJ, Co R, Kieran S, Arshad S, Keenan TJ, Wren AW, Crasto G, Peel SAF, Towler MR. A glass polyalkenoate cement carrier for bone morphogenetic proteins. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:151. [PMID: 25773232 DOI: 10.1007/s10856-015-5494-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 02/12/2015] [Indexed: 06/04/2023]
Abstract
This work considers a glass polyalkenoate cement (GPC)-based carrier for the effective delivery of bone morphogenetic proteins (BMPs) at an implantation site. A 0.12 CaO-0.04 SrO-0.36 ZnO-0.48 SiO2 based glass and poly(acrylic acid) (PAA, Mw 213,000) were employed for the fabrication of the GPC. The media used for the water source in the GPC reaction was altered to produce a series of GPCs. The GPC liquid media was either 100 % distilled water with additions of albumin at 0, 2, 5 and 8 wt% of the glass content, 100 % formulation buffer (IFB), and 100 % BMP (150 µg rhBMP-2/ml IFB). Rheological properties, compressive strength, ion release profiles and BMP release were evaluated. Working times (Tw) of the formulated GPCs significantly increased with the addition of 2 % albumin and remained constant with further increases in albumin content or IFB solutions. Setting time (Ts) experienced an increase with 2 and 5 % albumin content, but a decrease with 8 % albumin. Changing the liquid source to IFB containing 5 % albumin had no significant effect on Ts compared to the 8 % albumin-containing BT101. Replacing the albumin with IFB/BMP-2 did not significantly affect Tw. However, Ts increased for the BT101_BMP-2 containing GPCs, compared to all other samples. The compressive strength evaluated 1 day post cement mixing was not affected significantly by the incorporation of BMPs, but the ion release did increase from the cements, particularly for Zn and Sr. The GPCs released BMP after the first day, which decreased in content during the following 6 days. This study has proven that BMPs can be immobilized into GPCs and may result in novel materials for clinical applications.
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Affiliation(s)
- Adel M F Alhalawani
- Department of Mechanical & Industrial Engineering, Faculty of Engineering and Architectural Science, Ryerson University, 350 Victoria Street, Toronto, ON, M5B 2K3, Canada
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28
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Cabanas-Danés J, Rodrigues ED, Landman E, van Weerd J, van Blitterswijk C, Verrips T, Huskens J, Karperien M, Jonkheijm P. A Supramolecular Host–Guest Carrier System for Growth Factors Employing VHH Fragments. J Am Chem Soc 2014; 136:12675-81. [DOI: 10.1021/ja505695w] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jordi Cabanas-Danés
- Molecular
Nanofabrication Group, MESA+ Institute for Nanotechnology,
Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | | | | | - Jasper van Weerd
- Molecular
Nanofabrication Group, MESA+ Institute for Nanotechnology,
Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | - Clemens van Blitterswijk
- Department
of Complex Tissue and Organ Regeneration, MERLN Institute, Maastricht University, Netherlands
| | - Theo Verrips
- Cellular
Architecture and Dynamics, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, Netherlands
| | - Jurriaan Huskens
- Molecular
Nanofabrication Group, MESA+ Institute for Nanotechnology,
Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | | | - Pascal Jonkheijm
- Molecular
Nanofabrication Group, MESA+ Institute for Nanotechnology,
Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
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29
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Designer functionalised self-assembling peptide nanofibre scaffolds for cartilage tissue engineering. Expert Rev Mol Med 2014; 16:e12. [PMID: 25089851 DOI: 10.1017/erm.2014.13] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Owing to the limited regenerative capacity of cartilage tissue, cartilage repair remains a challenge in clinical treatment. Tissue engineering has emerged as a promising and important approach to repair cartilage defects. It is well known that material scaffolds are regarded as a fundamental element of tissue engineering. Novel biomaterial scaffolds formed by self-assembling peptides consist of nanofibre networks highly resembling natural extracellular matrices, and their fabrication is based on the principle of molecular self-assembly. Indeed, peptide nanofibre scaffolds have obtained much progress in repairing various damaged tissues (e.g. cartilage, bone, nerve, heart and blood vessel). This review outlines the rational design of peptide nanofibre scaffolds and their potential in cartilage tissue engineering.
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30
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Yoo SY, Merzlyak A, Lee SW. Synthetic phage for tissue regeneration. Mediators Inflamm 2014; 2014:192790. [PMID: 24991085 PMCID: PMC4058494 DOI: 10.1155/2014/192790] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 03/18/2014] [Indexed: 11/17/2022] Open
Abstract
Controlling structural organization and signaling motif display is of great importance to design the functional tissue regenerating materials. Synthetic phage, genetically engineered M13 bacteriophage has been recently introduced as novel tissue regeneration materials to display a high density of cell-signaling peptides on their major coat proteins for tissue regeneration purposes. Structural advantages of their long-rod shape and monodispersity can be taken together to construct nanofibrous scaffolds which support cell proliferation and differentiation as well as direct orientation of their growth in two or three dimensions. This review demonstrated how functional synthetic phage is designed and subsequently utilized for tissue regeneration that offers potential cell therapy.
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Affiliation(s)
- So Young Yoo
- Convergence Stem Cell Research Center, Medical Research Institute, Pusan National University School of Medicine, Yangsan 626-870, Republic of Korea
| | - Anna Merzlyak
- Department of Bioengineering, University of California, Berkeley, and Physical Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Seung-Wuk Lee
- Department of Bioengineering, University of California, Berkeley, and Physical Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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31
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Puppi D, Zhang X, Yang L, Chiellini F, Sun X, Chiellini E. Nano/microfibrous polymeric constructs loaded with bioactive agents and designed for tissue engineering applications: a review. J Biomed Mater Res B Appl Biomater 2014; 102:1562-79. [PMID: 24678016 DOI: 10.1002/jbm.b.33144] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 01/29/2014] [Accepted: 03/06/2014] [Indexed: 01/04/2023]
Abstract
Nano/microfibrous polymeric constructs present various inherent advantages, such as highly porous architecture and high surface to volume ratio, making them attractive for tissue engineering purposes. Electrospinning is the most preferred technique for the fabrication of polymeric nanofibrous assemblies that can mimic the physical functions of native extracellular matrix greatly favoring cells attachment and thus influencing their morphology and activities. Different approaches have been developed to apply polymeric microfiber fabrication techniques (e.g. wet-spinning) for the obtainment of scaffolds with a three-dimensional network of micropores suitable for effective cells migration. Progress in additive manufacturing technology has led to the development of complex scaffold's shapes and microfibrous structures with a high degree of automation, good accuracy and reproducibility. Various loading methods, such as direct blending, coaxial electrospinning and microparticles incorporation, are enabling to develop customized strategies for the biofunctionalization of nano/microfibrous scaffolds with a tailored kinetics of release of different bioactive agents, ranging from small molecules, such as antibiotics, to protein drugs, such as growth factors, and even cells. Recent activities on the combination of different processing techniques and loading methods for the obtainment of biofunctionalized polymeric constructs with a complex multiscale structure open new possibilities for the development of biomimetic scaffolds endowed with a hierarchical architecture and a sophisticated release kinetics of different bioactive agents. This review is aimed at summarizing current advances in technologies and methods for manufacturing nano/microfibrous polymeric constructs suitable as tissue engineering scaffolds, and for their combination with different bioactive agents to promote tissue regeneration and therapeutic effects.
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Affiliation(s)
- Dario Puppi
- Department of Chemistry and Industrial Chemistry, Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOlab), University of Pisa, 56010, San Piero a Grado (Pi), Italy
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32
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Porous membrane with reverse gradients of PDGF-BB and BMP-2 for tendon-to-bone repair: in vitro evaluation on adipose-derived stem cell differentiation. Acta Biomater 2014; 10:1272-9. [PMID: 24370639 DOI: 10.1016/j.actbio.2013.12.031] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 12/06/2013] [Accepted: 12/16/2013] [Indexed: 11/21/2022]
Abstract
Polycaprolactone (PCL)/Pluronic F127 membrane with reverse gradients of dual platelet-derived growth factor-β (PDGF-BB) and bone morphogenetic protein 2 (BMP-2) concentrations was fabricated using a diffusion method to investigate the effect of reverse gradients of dual growth factor concentrations on adipose-derived stem cell (ASC) differentiations, such as tenogenesis and osteogenesis. The PDGF-BB and BMP-2 were continuously released from the membrane for up to 35 days, with reversely increasing/decreasing growth factors along the membrane length. Human ASCs were seeded on the membrane with reverse PDGF-BB and BMP-2 gradients. The cells were confluent after 1 week of culture, regardless of growth factor types or concentrations on the membrane. Gene expression (real-time polymerase chain reaction), Western blot and immunohistological analyses after 1 and 2 weeks of ASC culture showed that the membrane sections with higher PDGF-BB and lower BMP-2 concentrations provided a better environment for ASC tenogenesis, while the membrane sections with higher BMP-2 and lower PDGF-BB concentrations were better for promoting osteogenesis. The results suggest that the membrane with reverse gradients of PDGF-BB and BMP-2 may be promising for tendon-to-bone repair, as most essential biological processes are mediated by gradients of biological molecules in the body.
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33
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Hyland LL, Taraban MB, Yu YB. Using Small-Angle Scattering Techniques to Understand Mechanical Properties of Biopolymer-Based Biomaterials. SOFT MATTER 2013; 9:10.1039/C3SM51209F. [PMID: 24273590 PMCID: PMC3835338 DOI: 10.1039/c3sm51209f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The design and engineering of innovative biopolymer-based biomaterials for a variety of biomedical applications should be based on the understanding of the relationship between their nanoscale structure and mechanical properties. Down the road, such understanding could be fundamental to tune the properties of engineered tissues, extracellular matrices for cell delivery and proliferation/differentiation, etc. In this tutorial review, we attempt to show in what way biomaterial structural data can help to understand the bulk material properties. We begin with some background on common types of biopolymers used in biomaterials research, discuss some typical mechanical testing techniques and then review how others in the field of biomaterials have utilized small-angle scattering for material characterization. Detailed examples are then used to show the full range of possible characterization techniques available for biopolymer-based biomaterials. Future developments in the area of material characterization by small-angle scattering will undoubtedly facilitate the use of structural data to control the kinetics of assembly and final properties of prospective biomaterials.
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Affiliation(s)
| | - Marc B. Taraban
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA. Fax: 301-315-9953; Tel: 301-405-2829
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, MD, USA. Fax: 410-706-5017; Tel: 410-706-7514
| | - Y. Bruce Yu
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, MD, USA. Fax: 410-706-5017; Tel: 410-706-7514
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34
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In vitro and in vivo investigation of the potential of amorphous microporous silica as a protein delivery vehicle. BIOMED RESEARCH INTERNATIONAL 2013; 2013:306418. [PMID: 23991413 PMCID: PMC3749544 DOI: 10.1155/2013/306418] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 06/28/2013] [Accepted: 07/09/2013] [Indexed: 11/21/2022]
Abstract
Delivering growth factors (GFs) at bone/implant interface needs to be optimized to achieve faster osseointegration. Amorphous microporous silica (AMS) has a potential to be used as a carrier and delivery platform for GFs. In this work, adsorption (loading) and release (delivery) mechanism of a model protein, bovine serum albumin (BSA), from AMS was investigated in vitro as well as in vivo. In general, strong BSA adsorption to AMS was observed. The interaction was stronger at lower pH owing to favorable electrostatic interaction. In vitro evaluation of BSA release revealed a peculiar release profile, involving a burst release followed by a 6 h period without appreciable BSA release and a further slower release later. Experimental data supporting this observation are discussed. Apart from understanding protein/biomaterial (BSA/AMS) interaction, determination of in vivo protein release is an essential aspect of the evaluation of a protein delivery system. In this regard micropositron emission tomography (μ-PET) was used in an exploratory experiment to determine in vivo BSA release profile from AMS. Results suggest stronger in vivo retention of BSA when adsorbed on AMS. This study highlights the possible use of AMS as a controlled protein delivery platform which may facilitate osseointegration.
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35
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Alavi SH, Liu WF, Kheradvar A. Inflammatory Response Assessment of a Hybrid Tissue-Engineered Heart Valve Leaflet. Ann Biomed Eng 2012; 41:316-26. [DOI: 10.1007/s10439-012-0664-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 09/22/2012] [Indexed: 12/25/2022]
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36
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Verron E, Bouler J, Guicheux J. Controlling the biological function of calcium phosphate bone substitutes with drugs. Acta Biomater 2012; 8:3541-51. [PMID: 22729019 DOI: 10.1016/j.actbio.2012.06.022] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 06/12/2012] [Accepted: 06/18/2012] [Indexed: 01/05/2023]
Abstract
There is a growing interest in bone tissue engineering for bone repair after traumatic, surgical or pathological injury, such as osteolytic tumor or osteoporosis. In this regard, calcium phosphate (CaP) bone substitutes have been used extensively as bone-targeting drug-delivery systems. This localized approach improves the osteogenic potential of bone substitutes by delivering bone growth factors, thus extending their biofunctionality to any pathological context, including infection, irradiation, tumor and osteoporosis. This review briefly describes the physical and chemical processes implicated in the preparation of drug-delivering CaPs. It also describes the impact of these processes on the intrinsic properties of CaPs, especially in terms of the drug-release profile. In addition, this review focuses on the potential influence of drugs on the resorption rate of CaPs. Interestingly, by modulating the resorption parameters of CaP biomaterials, it should be possible to control the release of bone-stimulating ions, such as inorganic phosphate, in the vicinity of bone cells. Finally, recent in vitro and in vivo evaluations are extensively reported.
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37
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Poh CK, Ng S, Lim TY, Tan HC, Loo J, Wang W. In vitrocharacterizations of mesoporous hydroxyapatite as a controlled release delivery device for VEGF in orthopedic applications. J Biomed Mater Res A 2012; 100:3143-50. [DOI: 10.1002/jbm.a.34252] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Revised: 05/02/2012] [Accepted: 05/07/2012] [Indexed: 12/23/2022]
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38
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Igwe JC, Mikael PE, Nukavarapu SP. Design, fabrication and in vitro evaluation of a novel polymer-hydrogel hybrid scaffold for bone tissue engineering. J Tissue Eng Regen Med 2012; 8:131-42. [PMID: 22689304 DOI: 10.1002/term.1506] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 01/10/2012] [Accepted: 01/31/2012] [Indexed: 01/22/2023]
Abstract
The development of a bone mechanically-compatible and osteoinductive scaffold is important for bone tissue engineering applications, particularly for the repair and regeneration of large area critically-sized bone defects. Although previous studies with weight-bearing scaffolds have shown promising results, there is a clear need to develop better osteoinductive strategies for effective scaffold-based bone regeneration. In this study, we designed and fabricated a novel polymer-hydrogel hybrid scaffold system in which a load-bearing polymer matrix and a peptide hydrogel allowed for the synergistic combination of mechanical strength and great potential for osteoinductivity in a single scaffold. The hybrid scaffold system promoted increased pre-osteoblastic cell proliferation. Further, we biotinylated human recombinant bone morphogenetic protein 2 (rhBMP2), and characterized the biotin addition and its effect on rhBMP2 biological activity. The biotinylated rhBMP2 was tethered to the hybrid scaffold using biotin-streptavidin complexation. Controlled release studies demonstrated increased rhBMP2 retention with the tethered rhBMP2 hybrid scaffold group. In vitro evaluation of the hybrid scaffold was performed with rat bone marrow stromal cells and mouse pre-osteoblast cell line MC3T3-E1 cells. Gene expression of alkaline phosphatase (ALP), collagen I (Col I), osteopontin (OPN), bone sialoprotein (BSP), Runx-2 and osteocalcin (OC) increased in MC3T3-E1 cells seeded on the rhBMP2 tethered hybrid scaffolds over the untethered counterparts, demonstrating osteoinductive potential of the hybrid graft. These findings suggest the possibility of developing a novel polymer-hydrogel hybrid system that is weight bearing and osteoinductive for effective bone tissue engineering.
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Affiliation(s)
- John C Igwe
- Institute for Regenerative Engineering, University of Connecticut, Farmington, CT, USA; Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA
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39
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Robinson KG, Nie T, Baldwin A, Yang E, Kiick KL, Akins RE. Differential effects of substrate modulus on human vascular endothelial, smooth muscle, and fibroblastic cells. J Biomed Mater Res A 2012; 100:1356-67. [PMID: 22374788 PMCID: PMC3351091 DOI: 10.1002/jbm.a.34075] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Revised: 01/05/2012] [Accepted: 01/06/2012] [Indexed: 12/18/2022]
Abstract
Regenerative medicine approaches offer attractive alternatives to standard vascular reconstruction; however, the biomaterials to be used must have optimal biochemical and mechanical properties. To evaluate the effects of biomaterial properties on vascular cells, heparinized poly(ethylene glycol) (PEG)-based hydrogels of three different moduli, 13.7, 5.2, and 0.3 kPa, containing fibronectin and growth factor were utilized to support the growth of three human vascular cell types. The cell types exhibited differences in attachment, proliferation, and gene expression profiles associated with the hydrogel modulus. Human vascular smooth muscle cells demonstrated preferential attachment on the highest-modulus hydrogel, adventitial fibroblasts demonstrated preferential growth on the highest-modulus hydrogel, and human umbilical vein endothelial cells demonstrated preferential growth on the lowest-modulus hydrogel investigated. Our studies suggest that the growth of multiple vascular cell types can be supported by PEG hydrogels and that different populations can be controlled by altering the mechanical properties of biomaterials.
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Affiliation(s)
- Karyn G. Robinson
- Tissue Engineering and Regenerative Medicine Laboratory, Nemours Biomedical Research, Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA
| | - Ting Nie
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE 19716, USA
| | - Aaron Baldwin
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE 19716, USA
| | - Elaine Yang
- Tissue Engineering and Regenerative Medicine Laboratory, Nemours Biomedical Research, Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE 19716, USA
- Delaware Biotechnology Institute, 15 Innovation Way, Newark, DE 19716, USA
| | - Robert E. Akins
- Tissue Engineering and Regenerative Medicine Laboratory, Nemours Biomedical Research, Alfred I. duPont Hospital for Children, Wilmington, DE 19803, USA
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40
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Yoshida H, Matsusaki M, Akashi M. Development of Thick and Highly Cell-Incorporated Engineered Tissues by Hydrogel Template Approach with Basic Fibroblast Growth Factor or Ascorbic Acid. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 21:415-28. [DOI: 10.1163/156856209x423135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Hiroaki Yoshida
- a Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
| | - Michiya Matsusaki
- b Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan; 21st Century COE Program "Center for Integrated Cell and Tissue Regulation", Osaka University, Japan
| | - Mitsuru Akashi
- c Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan; 21st Century COE Program "Center for Integrated Cell and Tissue Regulation", Osaka University, Japan
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41
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Bose S, Tarafder S. Calcium phosphate ceramic systems in growth factor and drug delivery for bone tissue engineering: a review. Acta Biomater 2012; 8:1401-21. [PMID: 22127225 DOI: 10.1016/j.actbio.2011.11.017] [Citation(s) in RCA: 474] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 11/04/2011] [Accepted: 11/13/2011] [Indexed: 12/12/2022]
Abstract
Calcium phosphates (CaPs) are the most widely used bone substitutes in bone tissue engineering due to their compositional similarities to bone mineral and excellent biocompatibility. In recent years, CaPs, especially hydroxyapatite and tricalcium phosphate, have attracted significant interest in simultaneous use as bone substitute and drug delivery vehicle, adding a new dimension to their application. CaPs are more biocompatible than many other ceramic and inorganic nanoparticles. Their biocompatibility and variable stoichiometry, thus surface charge density, functionality, and dissolution properties, make them suitable for both drug and growth factor delivery. CaP matrices and scaffolds have been reported to act as delivery vehicles for growth factors and drugs in bone tissue engineering. Local drug delivery in musculoskeletal disorder treatments can address some of the critical issues more effectively and efficiently than the systemic delivery. CaPs are used as coatings on metallic implants, CaP cements, and custom designed scaffolds to treat musculoskeletal disorders. This review highlights some of the current drug and growth factor delivery approaches and critical issues using CaP particles, coatings, cements, and scaffolds towards orthopedic and dental applications.
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42
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Wang K, Zhou C, Hong Y, Zhang X. A review of protein adsorption on bioceramics. Interface Focus 2012; 2:259-77. [PMID: 23741605 DOI: 10.1098/rsfs.2012.0012] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Accepted: 02/28/2012] [Indexed: 11/12/2022] Open
Abstract
Bioceramics, because of its excellent biocompatible and mechanical properties, has always been considered as the most promising materials for hard tissue repair. It is well know that an appropriate cellular response to bioceramics surfaces is essential for tissue regeneration and integration. As the in vivo implants, the implanted bioceramics are immediately coated with proteins from blood and body fluids, and it is through this coated layer that cells sense and respond to foreign implants. Hence, the adsorption of proteins is critical within the sequence of biological activities. However, the biological mechanisms of the interactions of bioceramics and proteins are still not well understood. In this review, we will recapitulate the recent studies on the bioceramic-protein interactions.
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Affiliation(s)
- Kefeng Wang
- National Engineering Research Center for Biomaterials , Sichuan University , 610064 Chengdu , People's Republic of China
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43
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Lee WH, Zavgorodniy AV, Loo CY, Rohanizadeh R. Synthesis and characterization of hydroxyapatite with different crystallinity: Effects on protein adsorption and release. J Biomed Mater Res A 2012; 100:1539-49. [DOI: 10.1002/jbm.a.34093] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 11/23/2011] [Accepted: 12/22/2011] [Indexed: 11/12/2022]
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44
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Pértile R, Moreira S, Andrade F, Domingues L, Gama M. Bacterial cellulose modified using recombinant proteins to improve neuronal and mesenchymal cell adhesion. Biotechnol Prog 2012; 28:526-32. [PMID: 22271600 DOI: 10.1002/btpr.1501] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 12/02/2011] [Indexed: 01/14/2023]
Abstract
A wide variety of biomaterials and bioactive molecules have been applied as scaffolds in neuronal tissue engineering. However, creating devices that enhance the regeneration of nervous system injuries is still a challenge, due the difficulty in providing an appropriate environment for cell growth and differentiation and active stimulation of nerve regeneration. In recent years, bacterial cellulose (BC) has emerged as a promising biomaterial for biomedical applications because of its properties such as high crystallinity, an ultrafine fiber network, high tensile strength, and biocompatibility. The small signaling peptides found in the proteins of extracellular matrix are described in the literature as promoters of adhesion and proliferation for several cell lineages on different surfaces. In this work, the peptide IKVAV was fused to a carbohydrate-binding module (CBM3) and used to modify BC surfaces, with the goal of promoting neuronal and mesenchymal stem cell (MSC) adhesion. The recombinant proteins IKVAV-CBM3 and (19)IKVAV-CBM3 were successfully expressed in E. coli, purified through affinity chromatography, and stably adsorbed to the BC membranes. The effect of these recombinant proteins, as well as RGD-CBM3, on cell adhesion was evaluated by MTS colorimetric assay. The results showed that the (19)IKVAV-CBM3 was able to significantly improve the adhesion of both neuronal and mesenchymal cells and had no effect on the other cell lineages tested. The MSC neurotrophin expression in cells grown on BC membranes modified with the recombinant proteins was also analyzed.
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Affiliation(s)
- Renata Pértile
- Centre of Biological Engineering, Universidade do Minho, Braga, Portugal
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Jhaveri-Desai H, Khetarpal S. Tissue Engineering in Regenerative Dental Therapy. JOURNAL OF HEALTHCARE ENGINEERING 2011. [DOI: 10.1260/2040-2295.2.4.405] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Odedra D, Chiu LLY, Shoichet M, Radisic M. Endothelial cells guided by immobilized gradients of vascular endothelial growth factor on porous collagen scaffolds. Acta Biomater 2011; 7:3027-35. [PMID: 21601017 DOI: 10.1016/j.actbio.2011.05.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Revised: 04/07/2011] [Accepted: 05/04/2011] [Indexed: 12/26/2022]
Abstract
A key challenge in tissue engineering is overcoming cell death in the scaffold interior due to the limited diffusion of oxygen and nutrients therein. We here hypothesize that immobilizing a gradient of a growth/survival factor from the periphery to the center of a porous scaffold would guide endothelial cells into the interior of the scaffold, thus overcoming a necrotic core. Proteins were immobilized by one of three methods on porous collagen scaffolds for cardiovascular tissue engineering. The proteins were first activated with 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide/sulfo N-hydroxysuccinimide and then applied to the scaffold by one of three methods to establish the gradient: perfusion (the flow method), use of a source and a sink (the source-sink method) or by injecting 5 μl of the solution at the center of the scaffold (point source method). Due to the high reproducibility and ease of application of the point source method it was further used for VEGF-165 gradient formation, where an ~2 ng ml(-1) mm(-1) gradient was formed in a radial direction across a scaffold, 12 mm in diameter and 2.5mm thick. More endothelial cells were guided by the VEGF-165 gradient deep into the center of the scaffold compared with both uniformly immobilized VEGF-165 (with the same total VEGF concentration) and VEGF-free controls. All scaffolds (including the controls) yielded the same number of cells, but notably the VEGF-165 gradient scaffolds demonstrated a higher cell density in the centre. Thus we concluded that the VEGF-165 gradient promoted the migration, but not proliferation, of cells into the scaffold. These gradient scaffolds provide the foundation for future in vivo tissue engineering studies.
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Affiliation(s)
- Devang Odedra
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
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Franz S, Rammelt S, Scharnweber D, Simon JC. Immune responses to implants - a review of the implications for the design of immunomodulatory biomaterials. Biomaterials 2011; 32:6692-709. [PMID: 21715002 DOI: 10.1016/j.biomaterials.2011.05.078] [Citation(s) in RCA: 888] [Impact Index Per Article: 68.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Accepted: 05/26/2011] [Indexed: 12/11/2022]
Abstract
A key for long-term survival and function of biomaterials is that they do not elicit a detrimental immune response. As biomaterials can have profound impacts on the host immune response the concept emerged to design biomaterials that are able to trigger desired immunological outcomes and thus support the healing process. However, engineering such biomaterials requires an in-depth understanding of the host inflammatory and wound healing response to implanted materials. One focus of this review is to outline the up-to-date knowledge on immune responses to biomaterials. Understanding the complex interactions of host response and material implants reveals the need for and also the potential of "immunomodulating" biomaterials. Based on this knowledge, we discuss strategies of triggering appropriate immune responses by functional biomaterials and highlight recent approaches of biomaterials that mimic the physiological extracellular matrix and modify cellular immune responses.
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Affiliation(s)
- Sandra Franz
- Department of Dermatology, Venerology and Allergology, University Leipzig, 04103 Leipzig, Germany.
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Bouten C, Dankers P, Driessen-Mol A, Pedron S, Brizard A, Baaijens F. Substrates for cardiovascular tissue engineering. Adv Drug Deliv Rev 2011; 63:221-41. [PMID: 21277921 DOI: 10.1016/j.addr.2011.01.007] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Revised: 12/26/2010] [Accepted: 01/14/2011] [Indexed: 12/29/2022]
Abstract
Cardiovascular tissue engineering aims to find solutions for the suboptimal regeneration of heart valves, arteries and myocardium by creating 'living' tissue replacements outside (in vitro) or inside (in situ) the human body. A combination of cells, biomaterials and environmental cues of tissue development is employed to obtain tissues with targeted structure and functional properties that can survive and develop within the harsh hemodynamic environment of the cardiovascular system. This paper reviews the up-to-date status of cardiovascular tissue engineering with special emphasis on the development and use of biomaterial substrates. Key requirements and properties of these substrates, as well as methods and readout parameters to test their efficacy in the human body, are described in detail and discussed in the light of current trends toward designing biologically inspired microenviroments for in situ tissue engineering purposes.
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Lo KWH, Ashe KM, Kan HM, Lee DA, Laurencin CT. Activation of cyclic amp/protein kinase: a signaling pathway enhances osteoblast cell adhesion on biomaterials for regenerative engineering. J Orthop Res 2011; 29:602-8. [PMID: 20957743 DOI: 10.1002/jor.21276] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Accepted: 09/02/2010] [Indexed: 02/04/2023]
Abstract
Osteoblast cell adhesion on biomaterials is an important goal for implants to be useful in bone regeneration technologies. The adhesion of osteoblastic cells to biomaterials has been investigated in the field of bone regenerative engineering. Previous work from our group demonstrated that osteoblastic cells adhering to biodegradable biomaterials require the expression of integrins on the cell surface. However, the underlying molecular signaling mechanism is still not fully clear. We report here that cyclic adenosine monophosphate (cAMP), a small signaling molecule, regulates osteoblast cell adhesion to biomaterial surfaces. We used an in vitro cell adhesion assay to demonstrate that at 0.1 mM, 8-Br-cAMP, a cell-permeable cAMP analog, significantly enhances osteoblast-like cells' (MC3T3-E1) adherence to biomaterials. Moreover, we demonstrate that a commonly used cAMP-elevating agent, forskolin, promotes cell adhesion similar to that of the cell permeable cAMP analog. By using different target-specific cAMP analogs: 8-CPT-2Me-cAMP which specifically activates exchange protein activated by cAMP (Epac), and 6-Bnz-cAMP which specifically activates protein kinase A (PKA), we observed that the PKA signaling pathway plays a dominant role in this process. Thus, this report suggests a new method to enhance osteoblast cell adhesion on biodegradable biomaterials for bone regenerative engineering applications.
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Affiliation(s)
- Kevin W-H Lo
- Department of Orthopaedic Surgery, New England Musculoskeletal Institute, University of Connecticut Health Center, Farmington, Connecticut 06030, USA
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Crouzier T, Fourel L, Boudou T, Albigès-Rizo C, Picart C. Presentation of BMP-2 from a soft biopolymeric film unveils its activity on cell adhesion and migration. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:H111-H118. [PMID: 21433098 DOI: 10.1002/adma.201004637] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 01/20/2011] [Indexed: 05/30/2023]
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