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Teo YC, Park EJ, Guo J, Abbas A, Smith RAA, Goh D, Yeong JPS, Cool S, Teo P. Bioactive PCL-Peptide and PLA-Peptide Brush Copolymers for Bone Tissue Engineering. ACS APPLIED BIO MATERIALS 2022; 5:4770-4778. [PMID: 36101969 DOI: 10.1021/acsabm.2c00455] [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: 11/30/2022]
Abstract
We report the modular synthesis of bioactive brush-type polycaprolactone-peptide and polylactide-peptide copolymers for applications in bone tissue engineering. The brush copolymers containing pendant side chains of polycaprolactone (PCL) or polylactide (PLA) and PEGylated peptides, including linear Arg-Gly-Asp and collagen-like peptide (Gly-Pro-Hyp)3, were synthesized by ring-opening metathesis polymerization with high conversions and low dispersities (<1.5). These PCL-peptide and PLA-peptide copolymers exhibited good thermal stability for material processing using melt-extrusion-based methods. The copolymers were blended with commercial PCL or PLA, extruded into filaments, and 3D printed using fused filament fabrication methods. These bioactive PCL and PLA materials promoted osteogenic differentiation in vitro and showed good biocompatibility in in vivo murine model study. The promising results presented herein will serve as a useful guide for the design and functionalization of PCL or PLA materials for use in bone tissue engineering.
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Affiliation(s)
- Yew Chin Teo
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, Innovis, Singapore 138634
| | - Eun Ju Park
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, Innovis, Singapore 138634
| | - Jiayi Guo
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, Innovis, Singapore 138634
| | - Asyraf Abbas
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, Innovis, Singapore 138634
| | - Raymond Alexander Alfred Smith
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, 61 Biopolis Drive, Singapore 138673
| | - Denise Goh
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, 61 Biopolis Drive, Singapore 138673
| | - Joe Poh Sheng Yeong
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, 61 Biopolis Drive, Singapore 138673
| | - Simon Cool
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, 61 Biopolis Drive, Singapore 138673
| | - Peili Teo
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, Innovis, Singapore 138634
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2
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Xu T, Yang R, Ma X, Chen W, Liu S, Liu X, Cai X, Xu H, Chi B. Bionic Poly(γ-Glutamic Acid) Electrospun Fibrous Scaffolds for Preventing Hypertrophic Scars. Adv Healthc Mater 2019; 8:e1900123. [PMID: 30972958 DOI: 10.1002/adhm.201900123] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/15/2019] [Indexed: 12/16/2022]
Abstract
Hypertrophic scarring (HS) remains a great challenge in wound dressing. Although various bionic extracellular matrix (ECM) biomaterials have been designed towards HS treatment, not all biomaterials can synergize biological functions and application functions in wound repair. Bionic scar-inhibiting scaffolds, loaded with biomolecules or drugs, become promising strategies for scarless skin regeneration. In this work, inspired by the physicochemical environment of ECM, a versatile fabrication of poly(γ-glutamic acid) based on electrospun photocrosslinkable hydrogel fibrous scaffolds incorporated with ginsenoside Rg3 (GS-Rg3) is developed for tissue repair and wound therapy. Decorated with adhesive peptide, bionic fibrous scaffolds can accelerate fibroblasts to sprout and grow, forming organized space-filling basement that gradually fills a depression before wound close up in the early stage. Additionally, by sustained release of GS-Rg3 in late stage, fibrous scaffolds promote scarless wound healing in vivo as evidenced by the promotion of cell communication and skin regeneration, as well as the subsequent decrease of angiogenesis and collagen accumulation. These ECM-inspired fibrous scaffolds, therefore, offer new perspectives on accelerated wound healing and tissue regeneration.
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Affiliation(s)
- Tingting Xu
- State Key Laboratory of Materials‐Oriented Chemical EngineeringCollege of Food Science and Light IndustryNanjing Tech University Nanjing 211816 China
| | - Rong Yang
- State Key Laboratory of Materials‐Oriented Chemical EngineeringCollege of Food Science and Light IndustryNanjing Tech University Nanjing 211816 China
| | - Xuebin Ma
- School of Chemical EngineeringNanjing University of Science and Technology Nanjing 210094 China
| | - Wei Chen
- State Key Laboratory of Materials‐Oriented Chemical EngineeringCollege of Food Science and Light IndustryNanjing Tech University Nanjing 211816 China
| | - Shuai Liu
- School of Chemical EngineeringNanjing University of Science and Technology Nanjing 210094 China
| | - Xin Liu
- State Key Laboratory of Materials‐Oriented Chemical EngineeringCollege of Food Science and Light IndustryNanjing Tech University Nanjing 211816 China
| | - Xiaojun Cai
- College of Materials Science and EngineeringNanjing Tech University Nanjing 211816 Nanjing China
| | - Hong Xu
- State Key Laboratory of Materials‐Oriented Chemical EngineeringCollege of Food Science and Light IndustryNanjing Tech University Nanjing 211816 China
- Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University Nanjing 211816 China
| | - Bo Chi
- State Key Laboratory of Materials‐Oriented Chemical EngineeringCollege of Food Science and Light IndustryNanjing Tech University Nanjing 211816 China
- Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University Nanjing 211816 China
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3
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Zhang X, Dai Y. Recent development of brush polymers via polymerization of poly(ethylene glycol)-based macromonomers. Polym Chem 2019. [DOI: 10.1039/c9py00104b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Polymerization of poly(ethylene glycol)-based macromonomers is a facile and versatile synthetic method to generate well-defined brush polymers.
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Affiliation(s)
- Xiaojin Zhang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Yu Dai
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
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4
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Effect of calcium ions on peptide adsorption at the aqueous rutile titania (110) interface. Biointerphases 2018; 13:06D403. [PMID: 30180596 DOI: 10.1116/1.5046531] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
How the presence of Ca2+ ions at the aqueous TiO2 interface influences the binding modes of two experimentally identified titania-binding peptides, Ti-1 and Ti-2, is investigated using replica exchange with solute tempering molecular dynamics simulations. The findings are compared with available experimental data, and the results are contrasted with those obtained under NaCl solution conditions. For Ti-1, Ca2+ ions enhance the adsorption of the negatively charged Asp8 residue in this sequence to the negatively charged surface, via Asp–Ca2+–TiO2 bridging. This appears to generate a nonlocal impact on the adsorption of Lys12 in Ti-1, which then pins the peptide to the surface via direct surface contact. For Ti-2, fewer residues were predicted to adsorb directly to the surface in CaCl2, compared with predictions made for NaCl solution, possibly due to competition between the other peptide residues and Ca2+ ions to adsorb to the surface. This reduction in direct surface contact gives rise to a more extensive solvent-mediated contact for Ti-2. In general, the presence of Ca2+ ions resulted in a loss of conformational diversity of the surface-adsorbed conformational ensembles of these peptides, compared to counterpart data predicted for NaCl solution. The findings provide initial insights into how peptide–TiO2 interactions might be tuned at the molecular level via modification of the salt composition of the liquid medium.
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Li J, Tan L, Liu X, Cui Z, Yang X, Yeung KWK, Chu PK, Wu S. Balancing Bacteria-Osteoblast Competition through Selective Physical Puncture and Biofunctionalization of ZnO/Polydopamine/Arginine-Glycine-Aspartic Acid-Cysteine Nanorods. ACS NANO 2017; 11:11250-11263. [PMID: 29049874 DOI: 10.1021/acsnano.7b05620] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Bacterial infection and lack of bone tissue integration are two major concerns of orthopedic implants. In addition, osteoinductivity often decreases and toxicity may arise when antibacterial agents are introduced to increase the antibacterial ability. Here hybrid ZnO/polydopamine (PDA)/arginine-glycine-aspartic acid-cysteine (RGDC) nanorod (NR) arrays are designed and prepared on titanium (Ti) implants to not only enhance the osteoinductivity but also effectively kill bacteria simultaneously, which are ascribed to the selective physical puncture and the biofunctionalization of ZnO/PDA/RGDC nanorods during the competition between bacteria and osteoblasts. That is, owing to the much larger size of osteoblasts than bacteria, the hybrid NRs can puncture bacteria but not damage osteoblasts. Meanwhile, the cytocompatibility can be enhanced through the suppression of both reactive oxygen species and higher Zn2+ concentration by the covering of PDA and RGDC. The in vitro results confirm the selective puncture of the bacterial membrane and the better osteoinductivity. In vivo tests also show much higher antibacterial efficacy of the hybrid NRs with far less amounts of lobulated neutrophils and adherent bacteria in the surrounding tissues. In addition, the hybrid NRs also accelerate formation of new bone tissues (20.1% higher than pure Ti) and osteointegration between implants and newly formed tissues (32.0% higher than pure Ti) even in the presence of injected bacteria. This work provides a surface strategy for designing implants with desirable ability of osseointegration and infection prevention simultaneously, which will exhibit tremendous clinical potential in orthopedic and dental applications.
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Affiliation(s)
- Jun Li
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan 430062, China
| | - Lei Tan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan 430062, China
| | - Xiangmei Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan 430062, China
| | - Zhenduo Cui
- School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Xianjin Yang
- School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Kelvin Wai Kwok Yeung
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong , Pokfulam, Hong Kong, China
| | - Paul K Chu
- Department of Physics and Department of Materials Science and Engineering, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Shuilin Wu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University , Wuhan 430062, China
- School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
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Cao L, Wang L, Fan L, Xiao W, Lin B, Xu Y, Liang J, Cao B. RGDC Peptide-Induced Biomimetic Calcium Phosphate Coating Formed on AZ31 Magnesium Alloy. MATERIALS 2017; 10:ma10040358. [PMID: 28772717 PMCID: PMC5506929 DOI: 10.3390/ma10040358] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/19/2017] [Accepted: 03/24/2017] [Indexed: 01/23/2023]
Abstract
Magnesium alloys as biodegradable metal implants have received a lot of interest in biomedical applications. However, magnesium alloys have extremely high corrosion rates a in physiological environment, which have limited their application in the orthopedic field. In this study, calcium phosphate compounds (Ca–P) coating was prepared by arginine–glycine–aspartic acid–cysteine (RGDC) peptide-induced mineralization in 1.5 simulated body fluid (SBF) to improve the corrosion resistance and biocompatibility of the AZ31 magnesium alloys. The adhesion of Ca–P coating to the AZ31 substrates was evaluated by a scratch test. Corrosion resistance and cytocompatibility of the Ca–P coating were investigated. The results showed that the RGDC could effectively promote the nucleation and crystallization of the Ca–P coating and the Ca–P coating had poor adhesion to the AZ31 substrates. The corrosion resistance and biocompatibility of the biomimetic Ca–P coating Mg alloys were greatly improved compared with that of the uncoated sample.
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Affiliation(s)
- Lin Cao
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Lina Wang
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Lingying Fan
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Wenjun Xiao
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Bingpeng Lin
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Yimeng Xu
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Jun Liang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Baocheng Cao
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
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7
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Neqal M, Pichavant L, Gauthier M, Héroguez V. Plurifunctional polyglycidol-based particles prepared by Dispersion Ring-Opening Metathesis Polymerization. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.04.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Pichavant L, Carrié H, Nguyen MN, Plawinski L, Durrieu MC, Héroguez V. Vancomycin Functionalized Nanoparticles for Bactericidal Biomaterial Surfaces. Biomacromolecules 2016; 17:1339-46. [PMID: 26938371 DOI: 10.1021/acs.biomac.5b01727] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this paper, we describe a simple and powerful way to synthesize antibacterial biomaterials with applications as implants in orthopedic surgery. Such implants are obtained by covalently grafting onto the Ti90A16 V4 alloy surface with vancomycin-functionalized nanoparticles. Nanoparticles were produced by ring-opening metathesis polymerization of α-norbornenyl-ω-vancomycin poly(ethylene oxide) macromonomers. Vancomycin is an interesting candidate because of its use in the field of implant associated infection as it is a glycopeptide which acts on bacterial walls. As a consequence, vancomycin does not need to be released for it to be active. In the first part of this paper, the synthesis and the complete characterization of these materials are described. In a second part, the in vitro antibacterial behavior is analyzed and discussed.
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Affiliation(s)
- Loïc Pichavant
- CNRS UMR5629, Laboratoire de Chimie des Polymères Organiques, IPB-ENSCBP, Université de Bordeaux, 16 avenue Pey Berland, F-33607 Pessac, France.,CNRS UMR5248, Institut de Chimie & Biologie des Membranes & des Nanoobjets, Université de Bordeaux, INP Bordeaux, 2 rue Robert Escarpit, F-33607 cedex Pessac France
| | - Hélène Carrié
- CNRS UMR5629, Laboratoire de Chimie des Polymères Organiques, IPB-ENSCBP, Université de Bordeaux, 16 avenue Pey Berland, F-33607 Pessac, France.,CNRS UMR5248, Institut de Chimie & Biologie des Membranes & des Nanoobjets, Université de Bordeaux, INP Bordeaux, 2 rue Robert Escarpit, F-33607 cedex Pessac France
| | - Minh Ngoc Nguyen
- CNRS UMR5629, Laboratoire de Chimie des Polymères Organiques, IPB-ENSCBP, Université de Bordeaux, 16 avenue Pey Berland, F-33607 Pessac, France.,Faculty of Chemistry, VNU University of Science , Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam
| | - Laurent Plawinski
- CNRS UMR5248, Institut de Chimie & Biologie des Membranes & des Nanoobjets, Université de Bordeaux, INP Bordeaux, 2 rue Robert Escarpit, F-33607 cedex Pessac France
| | - Marie-Christine Durrieu
- CNRS UMR5248, Institut de Chimie & Biologie des Membranes & des Nanoobjets, Université de Bordeaux, INP Bordeaux, 2 rue Robert Escarpit, F-33607 cedex Pessac France
| | - Valérie Héroguez
- CNRS UMR5629, Laboratoire de Chimie des Polymères Organiques, IPB-ENSCBP, Université de Bordeaux, 16 avenue Pey Berland, F-33607 Pessac, France
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9
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Gonzalez-Fajardo L, Mahajan LH, Ndaya D, Hargrove D, Manautou JE, Liang BT, Chen MH, Kasi RM, Lu X. Reduced in vivo toxicity of doxorubicin by encapsulation in cholesterol-containing self-assembled nanoparticles. Pharmacol Res 2016; 107:93-101. [PMID: 26976795 DOI: 10.1016/j.phrs.2016.03.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/17/2016] [Accepted: 03/08/2016] [Indexed: 12/11/2022]
Abstract
We previously reported the development of an amphiphilic brush-like block copolymer composed of polynorbornene-cholesterol/polyethylene glycol (P(NBCh9-b-NBPEG)) that self-assembles in aqueous media to form long circulating nanostructures capable of encapsulating doxorubicin (DOX-NPs). Biodistribution studies showed that this formulation preferentially accumulates in tumor tissue with markedly reduced accumulation in the heart and other major organs. The aim of the current study was to evaluate the in vivo efficacy and toxicity of DOX containing self-assembled polymer nanoparticles in a mouse xenograft tumor model and compare its effects with the hydrochloride non-encapsulated form (free DOX). DOX-NPs significantly reduced the growth of tumors without inducing any apparent toxicity. Conversely, mice treated with free DOX exhibited significant weight loss, early toxic cardiomyopathy, acute toxic hepatopathy, reduced hematopoiesis and fatal toxicity. The improved safety profile of the polymeric DOX-NPs can be explained by the low circulating concentration of non-nanoparticle-associated drug as well as the reduced accumulation of DOX in non-target organs. These findings support the use of P(NBCh9-b-NBPEG) nanoparticles as delivery platforms for hydrophobic anticancer drugs intended to reduce the toxicity of conventional treatments.
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Affiliation(s)
| | - Lalit H Mahajan
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - Dennis Ndaya
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Derek Hargrove
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - José E Manautou
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Bruce T Liang
- Pat and Jim Calhoun Cardiology Center, University of Connecticut School of Medicine, Farmington, CT 06030, USA
| | - Ming-Hui Chen
- Department of Statistics, University of Connecticut, Storrs, CT 06269, USA
| | - Rajeswari M Kasi
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA; Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Xiuling Lu
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA.
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10
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Surface engineering of titanium with simvastatin-releasing polymer nanoparticles for enhanced osteogenic differentiation. Macromol Res 2015. [DOI: 10.1007/s13233-016-4007-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Peng Z, Ao H, Wang L, Guo S, Tang T. Quaternised chitosan coating on titanium provides a self-protective surface that prevents bacterial colonisation and implant-associated infections. RSC Adv 2015. [DOI: 10.1039/c5ra07540h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The Ti rod-treated group showed radiographic signs of osseous destruction, osteolytic lesions and consecutive deformity after 14 days, while the HTi rod-treated group were free of radiographic signs of infection.
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Affiliation(s)
- Zhaoxiang Peng
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200011
| | - Haiyong Ao
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200011
| | - Ling Wang
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Shengrong Guo
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Tingting Tang
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200011
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12
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2012. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.02.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Zadpoor AA. Relationship between in vitro apatite-forming ability measured using simulated body fluid and in vivo bioactivity of biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 35:134-43. [DOI: 10.1016/j.msec.2013.10.026] [Citation(s) in RCA: 151] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 10/04/2013] [Accepted: 10/19/2013] [Indexed: 02/04/2023]
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14
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Choi GH, Lee HJ, Lee SC. Titanium-Adhesive Polymer Nanoparticles as a Surface-Releasing System of Dual Osteogenic Growth Factors. Macromol Biosci 2013; 14:496-507. [DOI: 10.1002/mabi.201300368] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/02/2013] [Indexed: 01/20/2023]
Affiliation(s)
- Gi Hyun Choi
- Department of Maxillofacial Biomedical Engineering; Institute of Oral Biology, School of Dentistry, Kyung Hee University; 1 Hoegi-dong, Dongdaemun-gu Seoul 130-701 Republic of Korea
| | - Hong Jae Lee
- Department of Maxillofacial Biomedical Engineering; Institute of Oral Biology, School of Dentistry, Kyung Hee University; 1 Hoegi-dong, Dongdaemun-gu Seoul 130-701 Republic of Korea
| | - Sang Cheon Lee
- Department of Maxillofacial Biomedical Engineering; Institute of Oral Biology, School of Dentistry, Kyung Hee University; 1 Hoegi-dong, Dongdaemun-gu Seoul 130-701 Republic of Korea
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15
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Gueugnon F, Denis I, Pouliquen D, Collette F, Delatouche R, Héroguez V, Grégoire M, Bertrand P, Blanquart C. Nanoparticles produced by ring-opening metathesis polymerization using norbornenyl-poly(ethylene oxide) as a ligand-free generic platform for highly selective in vivo tumor targeting. Biomacromolecules 2013; 14:2396-402. [PMID: 23731363 DOI: 10.1021/bm400516b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We described a norbornenyl-poly(ethylene oxide) nanoparticles ligand-free generic platform, made fluorescent with straightforward preparation by ring-opening metathesis polymerization (ROMP). Our method allowed to easily obtain a drug delivery system (DDS) with facilitated functionalization by means of azide-alkyne click chemistry and with a high selectivity for the tumor in vivo, while cellular internalization is obtained without cell targeting strategy. We demonstrated that our nanoparticles are internalized by endocytosis and colocalized with acidic intracellular compartments in two models of aggressive tumoral cell lines with low prognostic and limited therapeutic treatments. Our nanoparticles could be of real interest to limit the toxicity and to increase the clinical benefit of drugs suffering rapid clearance and side effects and an alternative for cancers with poorly efficient therapeutic solutions by associating the drug delivery in the tumor tissue with an acid-sensitive release system.
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Affiliation(s)
- Fabien Gueugnon
- Inserm, U892, CNRS, UMR 6299, and University of Nantes, 8 Quai Moncousu, 44007 Nantes cedex 1, France
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16
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Huh JB, Lee JY, Jeon YC, Shin SW, Ahn JS, Ryu JJ. Physical stability of arginine-glycine-aspartic acid peptide coated on anodized implants after installation. J Adv Prosthodont 2013; 5:84-91. [PMID: 23755331 PMCID: PMC3675298 DOI: 10.4047/jap.2013.5.2.84] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 04/25/2013] [Accepted: 05/07/2013] [Indexed: 11/25/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate the stability of arginine-glycine-aspartic acid (RGD) peptide coatings on implants by measuring the amount of peptide remaining after installation. MATERIALS AND METHODS Fluorescent isothiocyanate (FITC)-fixed RGD peptide was coated onto anodized titanium implants (width 4 mm, length 10 mm) using a physical adsorption method (P) or a chemical grafting method (C). Solid Rigid Polyurethane Foam (SRPF) was classified as either hard bone (H) or soft bone (S) according to its density. Two pieces of artificial bone were fixed in a customized jig, and coated implants were installed at the center of the boundary between two pieces of artificial bone. The test groups were classified as: P-H, P-S, C-H, or C-S. After each installation, implants were removed from the SRPF, and the residual amounts and rates of RGD peptide in implants were measured by fluorescence spectrometry. The Kruskal-Wallis test was used for the statistical analysis (α=0.05). RESULTS Peptide-coating was identified by fluorescence microscopy and XPS. Total coating amount was higher for physical adsorption than chemical grafting. The residual rate of peptide was significantly larger in the P-S group than in the other three groups (P<.05). CONCLUSION The result of this study suggests that coating doses depend on coating method. Residual amounts of RGD peptide were greater for the physical adsorption method than the chemical grafting method.
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Affiliation(s)
- Jung-Bo Huh
- Department of Prosthodontics, School of Dentistry, Dental Hospital, Dental Research Institute, Pusan National University, Yangsan, Republic of Korea
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Lee HJ, Koo AN, Lee SW, Lee MH, Lee SC. Catechol-functionalized adhesive polymer nanoparticles for controlled local release of bone morphogenetic protein-2 from titanium surface. J Control Release 2013; 170:198-208. [PMID: 23727196 DOI: 10.1016/j.jconrel.2013.05.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 05/02/2013] [Accepted: 05/22/2013] [Indexed: 01/17/2023]
Abstract
We report on a novel surface functionalization approach to equip the titanium (Ti) surfaces with osteogenic properties. A key feature of the approach is the treatment of the Ti surfaces with Ti-adhesive nanoparticles that can stably load and controllably release bone morphogenetic protein-2 (BMP-2). Ti-adhesive nanoparticles were prepared by self-assembly of a catechol-functionalized poly(amino acid) diblock copolymer, catechol-poly(L-aspartic acid)-b-poly(L-phenylalanine) (Cat-PAsp-PPhe). The nanoparticles consist of Ti-adhesive peripheral catechol groups, anionic PAsp shells, and PPhe inner cores. Field-emission scanning electron microscopy (Fe-SEM) images showed that the Ti-adhesive nanoparticles could be uniformly immobilized on Ti surfaces. X-ray photoelectron spectroscopy (XPS) confirmed the successful anchoring of nanoparticles onto Ti surfaces. After surface immobilization of the nanoparticles, the static water contact angle of the Ti substrate decreased from 75.3° to 50.0° or 36.4°, depending on the surface nanoparticle. Fluorescence microscopic analysis showed that BMP-2 could be effectively incorporated onto the Ti surface with adhesive nanoparticles. BMP-2 was controllably released for up to 40 days. The Ti substrate functionalized with BMP-2-incorporated nanoparticles significantly promoted attachment, proliferation, spreading, and alkaline phosphatase (ALP) activity of human adipose-derived stem cell (hADSC). The catechol-functionalized adhesive nanoparticles may be applied to various medical devices to create surfaces for improved performance.
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Affiliation(s)
- Hong Jae Lee
- Department of Maxillofacial Biomedical Engineering & Institute of Oral Biology, School of Dentistry, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea
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Palankar R, Medvedev N, Rong A, Delcea M. Fabrication of quantum dot microarrays using electron beam lithography for applications in analyte sensing and cellular dynamics. ACS NANO 2013; 7:4617-28. [PMID: 23597071 DOI: 10.1021/nn401424y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Quantum dot (QD) based micro-/nanopatterned arrays are of broad interest in applications ranging from electronics, photonics, to sensor devices for biomedical purposes. Here, we report on a rapid, physico-chemically mild approach to generate high fidelity micropattern arrays of prefunctionalized water-soluble quantum dots using electron beam lithography. We show that such patterns retain their fluorescence and bioaffinity upon electron beam lithography and, based on the streptavidin-biotin interaction, allow for detection of proteins, colloidal gold nanoparticles and magnetic microparticles. Furthermore, we demonstrate the applicability of QD based microarray patterns differing in their shape (circles, squares, grid-like), size (from 1 to 10 μm) and pitch distance to study the adhesion, spreading and migration of human blood derived neutrophils. Using live cell confocal fluorescence microscopy, we show that pattern geometry and pitch distance influence the adhesion, spreading and migratory behavior of neutrophils. Research reported in this work paves the way for producing QD microarrays with multiplexed functionalities relevant for applications in analyte sensing and cellular dynamics.
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Affiliation(s)
- Raghavendra Palankar
- Nanostructure Group, ZIK HIKE - Center for Innovation Competence , Humoral Immune Reactions in Cardiovascular Diseases, Ernst-Moritz-Arndt-Universität Greifswald, 17489 Greifswald, Germany.
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Das RK, Zouani OF, Labrugère C, Oda R, Durrieu MC. Influence of nanohelical shape and periodicity on stem cell fate. ACS NANO 2013; 7:3351-3361. [PMID: 23451935 DOI: 10.1021/nn4001325] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Microenvironments such as protein composition, physical features, geometry, and elasticity play important roles in stem cell lineage specification. The components of the extracellular matrix are known to subsequently assemble into fibrillar networks in vivo with defined periodicity. However, the effect of the most critical parameter, which involves the periodicity of these fibrillar networks, on the stem cell fate is not yet investigated. Here, we show the effect of synthetic fibrillar networks patterned with nanometric periodicities, using bottom-up approaches, on the response of stem cells. We have used helical organic nanoribbons based on self-assemblies of Gemini-type amphiphiles to access chiral silica nanoribbons with two different shapes and periodicities (twisted ribbons and helical ribbons) from the same native self-assembled organic nanostructure. We demonstrate the covalent grafting of these silica nanoribbons onto activated glass substrates and the influence of this programmed isotropically oriented matrix to direct the commitment of human mesenchymal stem cells (hMSCs) into osteoblast lineage in vitro, free of osteogenic-inducing media. The specific periodicity of 63 nm (±5 nm) with helical ribbon shape induces specific cell adhesion through the fibrillar focal adhesion formation and leads to stem cell commitment into osteoblast lineage. In contrast, the matrix of periodicity 100 nm (±15 nm) with twisted ribbon shape does not lead to osteoblast commitment. The inhibition of non-muscle myosin II with blebbistatin is sufficient to block this osteoblast commitment on helical nanoribbon matrix, demonstrating that stem cells interpret the nanohelical shape and periodicity environment physically. These results indicate that hMSCs could interpret nanohelical shape and periodicity in the same way they sense microenvironment elasticity. This provides a promising tool to promote hMSC osteogenic capacity, which can be exploited in a 3D scaffold for bone tissue engineering.
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Affiliation(s)
- Rajat K Das
- UMR 5248 CBMN, CNRS-Université de Bordeaux-ENITAB, Institut Européen de Chimie et Biologie, 2 Rue Robert Escarpit, F-33607 Pessac, France
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Wu C, Chen M, Skelton AA, Cummings PT, Zheng T. Adsorption of arginine-glycine-aspartate tripeptide onto negatively charged rutile (110) mediated by cations: the effect of surface hydroxylation. ACS APPLIED MATERIALS & INTERFACES 2013; 5:2567-2579. [PMID: 23461392 DOI: 10.1021/am3031568] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Classical molecular dynamics (MD) simulations were employed to investigate the adsorption behaviors of arginine-glycine-aspartate (RGD) tripeptide onto the negatively charged hydroxylated/nonhydroxylated rutile (110) surfaces, mediated by biologically important cations (Na+ or Ca2+). The simulation results indicate that the inherent nature of the cation determines its binding strength, thereby regulating the adsorption geometry of the peptide. The sparse hydroxyl groups on the nonhydroxylated rutile diminish the probability of H-bond formation between RGD and the surface, resulting in an early desorption of the peptide even with a mediating Na+ ion. In contrast, the negatively charged aspartate (Asp) side chain is bridged to the negatively charged hydroxylated rutile by an inner-sphere Na+ ion, in coordination with the Asp-rutile hydrogen bonds at the anchoring sites. The inner- and outer-sphere Ca2+ ions are demonstrated to be capable of "trapping" RGD on both hydroxylated and nonhydroxylated rutile, in the absence of hydrogen bonds with the surface. The strongly bound inner-sphere mediating Ca2+ ion exerts a "gluing" effect on the Asp side chain, producing a tightly packed RGD-rutile complex, whereas a less localized distribution density of the outer-sphere mediating Ca2+ ion results in a higher mobility of the Asp side chain. The intramolecular interaction is suggested to facilitate the structural stability of RGD adsorbed on the negative rutile in a "horseshoe" configuration.
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Affiliation(s)
- Chunya Wu
- Center for Precision Engineering, Harbin Institute of Technology, P.O. Box 413, Harbin, Heilongjiang 150001, China.
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Hou XB, Hu YC, He JQ. Isotopic tracing for calculating the surface density of arginine-glycine-aspartic acid-containing peptide on allogeneic bone. Orthop Surg 2013; 5:51-5. [PMID: 23420748 DOI: 10.1111/os.12029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 01/14/2013] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE To investigate the feasibility of determining the surface density of arginine-glycine-aspartic acid (RGD) peptides grafted onto allogeneic bone by an isotopic tracing method involving labeling these peptides with (125) I, evaluating the impact of the input concentration of RGD peptides on surface density and establishing the correlation between surface density and their input concentration. METHODS A synthetic RGD-containing polypeptide (EPRGDNYR) was labeled with (125) I and its specific radioactivity calculated. Reactive solutions of RGD peptide with radioactive (125) I-RGD as probe with input concentrations of 0.01 mg/mL, 0.10 mg/mL, 0.50 mg/mL, 1.00 mg/mL, 2.00 mg/mL and 4.00 mg/mL were prepared. Using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide as a cross-linking agent, reactions were induced by placing allogeneic bone fragments into reactive solutions of RGD peptide of different input concentrations. On completion of the reactions, the surface densities of RGD peptides grafted onto the allogeneic bone fragments were calculated by evaluating the radioactivity and surface areas of the bone fragments. The impact of input concentration of RGD peptides on surface density was measured and a curve constructed. RESULTS Measurements by a radiodensity γ-counter showed that the RGD peptides had been labeled successfully with (125) I. The allogeneic bone fragments were radioactive after the reaction, demonstrating that the RGD peptides had been successfully grafted onto their surfaces. It was also found that with increasing input concentration, the surface density increased. CONCLUSION It was concluded that the surface density of RGD peptides is quantitatively related to their input concentration. With increasing input concentration, the surface density gradually increases to saturation value.
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Affiliation(s)
- Xiao-bin Hou
- Department of Bone Oncology, Tianjin Hospital, Tianjin, China
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Pichavant L, Amador G, Jacqueline C, Brouillaud B, Héroguez V, Durrieu MC. pH-controlled delivery of gentamicin sulfate from orthopedic devices preventing nosocomial infections. J Control Release 2012; 162:373-81. [DOI: 10.1016/j.jconrel.2012.06.033] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 06/26/2012] [Indexed: 01/15/2023]
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Boivin MC, Chevallier P, Hoesli CA, Lagueux J, Bareille R, Rémy M, Bordenave L, Durrieu MC, Laroche G. Human saphenous vein endothelial cell adhesion and expansion on micropatterned polytetrafluoroethylene. J Biomed Mater Res A 2012; 101:694-703. [DOI: 10.1002/jbm.a.34367] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 07/04/2012] [Accepted: 07/05/2012] [Indexed: 01/01/2023]
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Patel PR, Kiser RC, Lu YY, Fong E, Ho WC, Tirrell DA, Grubbs RH. Synthesis and cell adhesive properties of linear and cyclic RGD functionalized polynorbornene thin films. Biomacromolecules 2012; 13:2546-53. [PMID: 22783892 DOI: 10.1021/bm300795y] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Described herein is the efficient synthesis and evaluation of bioactive arginine-glycine-aspartic acid (RGD) functionalized polynorbornene-based materials for cell adhesion and spreading. Polynorbornenes containing either linear or cyclic RGD peptides were synthesized by ring-opening metathesis polymerization (ROMP) using the well-defined ruthenium initiator [(H(2)IMes)(pyr)(2)(Cl)(2)Ru═CHPh]. The random copolymerization of three separate norbornene monomers allowed for the incorporation of water-soluble polyethylene glycol (PEG) moieties, RGD cell recognition motifs, and primary amines for postpolymerization cross-linking. Following polymer synthesis, thin-film hydrogels were formed by cross-linking with bis(sulfosuccinimidyl) suberate (BS(3)), and the ability of these materials to support human umbilical vein endothelial cell (HUVEC) adhesion and spreading was evaluated and quantified. When compared to control polymers containing either no peptide or a scrambled RDG peptide, polymers with linear or cyclic RGD at varying concentrations displayed excellent cell adhesive properties in both serum-supplemented and serum-free media. Polymers with cyclic RGD side chains maintained cell adhesion and exhibited comparable integrin binding at a 100-fold lower concentration than those carrying linear RGD peptides. The precise control of monomer incorporation enabled by ROMP allows for quantification of the impact of RGD structure and concentration on cell adhesion and spreading. The results presented here will serve to guide future efforts for the design of RGD functionalized materials with applications in surgery, tissue engineering, and regenerative medicine.
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Affiliation(s)
- Paresma R Patel
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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