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Koguchi R, Jankova K, Tanaka Y, Yamamoto A, Murakami D, Yang Q, Ameduri B, Tanaka M. Altering the bio-inert properties of surfaces by fluorinated copolymers of mPEGMA. BIOMATERIALS ADVANCES 2023; 153:213573. [PMID: 37562157 DOI: 10.1016/j.bioadv.2023.213573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/20/2023] [Accepted: 07/25/2023] [Indexed: 08/12/2023]
Abstract
Hydrophilic materials display "bio-inert properties", meaning that they are less recognized as foreign substances by proteins and cells. Such materials are often water soluble; therefore, one general approach to enable the use of these materials in various applications deals with copolymerizing hydrophilic monomers with hydrophobic ones to facilitate such resulting copolymers water insoluble. However, reducing the hydrophilic monomer amount may reduce the bio-inert properties of the material. The decrease in bio-inert properties can be avoided when small amounts of fluorine are used in copolymers with hydrophilic monomers, as presented in this article. Even in small quantities (7.9 wt%), the fluorinated monomer, 1,1,1,3,3,3-hexafluoropropan-2-yl 2-fluoroacrylate (FAHFiP), contributed to the improved hydrophobicity of the polymers of the long side-chain poly(ethylene glycol) methyl ether methacrylate (mPEGMA) bearing nine ethylene glycol units turning them water insoluble. As evidenced by the AFM deformation image, a phase separation between the FAHFiP and mPEGMA domains was observed. The copolymer with the highest amount of the fluorinated monomer (66.2 wt%) displayed also high (82 %) FAHFiP amount at the polymer-water interface. In contrast, the hydrated sample with the lowest FAHFiP/highest mPEGMA amount was enriched of three times more hydrophilic domains at the polymer-water interface compared to that of the sample with the highest FAHFiP content. Thus, by adding a small FAHFiP amount to mPEGMA copolymers, water insoluble in the bulk too, could be turned highly hydrophilic at the water interface. The high content of intermediate water contributed to their excellent bio-inert properties. Platelet adhesion and fibrinogen adsorption on their surfaces were even more decreased as compared to those on poly(2-methoxyethyl acrylate), which is typically used in medical devices.
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Affiliation(s)
- Ryohei Koguchi
- AGC Inc. Organic Materials Division, Materials Integration Laboratories, 1-1 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Katja Jankova
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan; Department of Energy Conversion and Storage, Technical University of Denmark, Elektrovej, Build. 375, 2800 Kongens Lyngby, Denmark
| | - Yukiko Tanaka
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan
| | - Aki Yamamoto
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan
| | - Daiki Murakami
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan
| | - Qizhi Yang
- University of Montpellier, ICGM, CNRS, ENSCM, 34000 Montpellier, France
| | - Bruno Ameduri
- University of Montpellier, ICGM, CNRS, ENSCM, 34000 Montpellier, France.
| | - Masaru Tanaka
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan.
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2
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Eickenscheidt A, Lavaux V, Paschke S, Martínez AG, Schönemann E, Laschewsky A, Lienkamp K, Staszewski O. Effect of Poly(Oxanorbonene)- and Poly(Methacrylate)-Based Polyzwitterionic Surface Coatings on Cell Adhesion and Gene Expression of Human Keratinocytes. Macromol Biosci 2022; 22:e2200225. [PMID: 36200655 DOI: 10.1002/mabi.202200225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/21/2022] [Indexed: 12/25/2022]
Abstract
Polyzwitterions are generally known for their anti-adhesive properties, including resistance to protein and cell adhesion, and overall high bio-inertness. Yet there are a few polyzwitterions to which mammalian cells do adhere. To understand the structural features of this behavior, a panel of polyzwitterions with different functional groups and overall degrees of hydrophobicity is analyzed here, and their physical and biological properties are correlated to these structural differences. Cell adhesion is focused on, which is the basic requirement for cell viability, proliferation, and growth. With the here presented polyzwitterion panel, three different types of cell-surface interactions are observed: adhesion, slight attachment, and cell repellency. Using immunofluorescence methods, it is found that human keratinocytes (HaCaT) form focal adhesions on the cell-adhesive polyzwitterions, but not on the sample that has only slight cell attachment. Gene expression analysis indicates that HaCaT cells cultivated in the presence of a non-adhesive polyzwitterion have up-regulated inflammatory and apoptosis-related cell signaling pathways, while the gene expression of HaCaT cells grown on a cell-adhesive polyzwitterion does not differ from the gene expression of the growth control, and thus can be defined as fully cell-compatible.
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Affiliation(s)
- Alice Eickenscheidt
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, 79110, Freiburg, Germany.,Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110, Freiburg, Germany
| | - Valentine Lavaux
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, 79110, Freiburg, Germany.,Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110, Freiburg, Germany
| | - Stefan Paschke
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, 79110, Freiburg, Germany.,Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, 79110, Freiburg, Germany
| | | | - Eric Schönemann
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht Str. 25, 14476, Potsdam-Golm, Germany
| | - André Laschewsky
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht Str. 25, 14476, Potsdam-Golm, Germany.,Fraunhofer Institut für Angewandte Polymerforschung, 14476, Potsdam-Golm, Germany
| | - Karen Lienkamp
- Department of Materials Science, Saarland University, Campus, 66123, Saarbrücken, Germany
| | - Ori Staszewski
- Institute for Neuropathology, Medical Center of the University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany
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3
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Mohamed MA, Shahini A, Rajabian N, Caserto J, El-Sokkary AM, Akl MA, Andreadis ST, Cheng C. Fast photocurable thiol-ene elastomers with tunable biodegradability, mechanical and surface properties enhance myoblast differentiation and contractile function. Bioact Mater 2021; 6:2120-2133. [PMID: 33511311 PMCID: PMC7810627 DOI: 10.1016/j.bioactmat.2020.12.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 01/04/2023] Open
Abstract
Biodegradable elastomers are important emerging biomaterials for biomedical applications, particularly in the area of soft-tissue engineering in which scaffolds need to match the physicochemical properties of native tissues. Here, we report novel fast photocurable elastomers with readily tunable mechanical properties, surface wettability, and degradability. These elastomers are prepared by a 5-min UV-irradiation of thiol-ene reaction systems of glycerol tripentenoate (GTP; a triene) or the combination of GTP and 4-pentenyl 4-pentenoate (PP; a diene) with a carefully chosen series of di- or tri-thiols. In the subsequent application study, these elastomers were found to be capable of overcoming delamination of myotubes, a technical bottleneck limiting the in vitro growth of mature functional myofibers. The glycerol-based elastomers supported the proliferation of mouse and human myoblasts, as well as myogenic differentiation into contractile myotubes. More notably, while beating mouse myotubes detached from conventional tissue culture plates, they remain adherent on the elastomer surface. The results suggest that these elastomers as novel biomaterials may provide a promising platform for engineering functional soft tissues with potential applications in regenerative medicine or pharmacological testing.
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Affiliation(s)
- Mohamed Alaa Mohamed
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
- Chemistry Department, College of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Aref Shahini
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Nika Rajabian
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Julia Caserto
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Ahmed M.A. El-Sokkary
- Chemistry Department, College of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Magda A. Akl
- Chemistry Department, College of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Stelios T. Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
- Center of Excellence in Bioinformatics and Life Sciences, Buffalo, NY, 14263, USA
| | - Chong Cheng
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
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4
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Yang L, Pijuan-Galito S, Rho HS, Vasilevich AS, Eren AD, Ge L, Habibović P, Alexander MR, de Boer J, Carlier A, van Rijn P, Zhou Q. High-Throughput Methods in the Discovery and Study of Biomaterials and Materiobiology. Chem Rev 2021; 121:4561-4677. [PMID: 33705116 PMCID: PMC8154331 DOI: 10.1021/acs.chemrev.0c00752] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Indexed: 02/07/2023]
Abstract
The complex interaction of cells with biomaterials (i.e., materiobiology) plays an increasingly pivotal role in the development of novel implants, biomedical devices, and tissue engineering scaffolds to treat diseases, aid in the restoration of bodily functions, construct healthy tissues, or regenerate diseased ones. However, the conventional approaches are incapable of screening the huge amount of potential material parameter combinations to identify the optimal cell responses and involve a combination of serendipity and many series of trial-and-error experiments. For advanced tissue engineering and regenerative medicine, highly efficient and complex bioanalysis platforms are expected to explore the complex interaction of cells with biomaterials using combinatorial approaches that offer desired complex microenvironments during healing, development, and homeostasis. In this review, we first introduce materiobiology and its high-throughput screening (HTS). Then we present an in-depth of the recent progress of 2D/3D HTS platforms (i.e., gradient and microarray) in the principle, preparation, screening for materiobiology, and combination with other advanced technologies. The Compendium for Biomaterial Transcriptomics and high content imaging, computational simulations, and their translation toward commercial and clinical uses are highlighted. In the final section, current challenges and future perspectives are discussed. High-throughput experimentation within the field of materiobiology enables the elucidation of the relationships between biomaterial properties and biological behavior and thereby serves as a potential tool for accelerating the development of high-performance biomaterials.
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Affiliation(s)
- Liangliang Yang
- University
of Groningen, W. J. Kolff Institute for Biomedical Engineering and
Materials Science, Department of Biomedical Engineering, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Sara Pijuan-Galito
- School
of Pharmacy, Biodiscovery Institute, University
of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Hoon Suk Rho
- Department
of Instructive Biomaterials Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Aliaksei S. Vasilevich
- Department
of Biomedical Engineering, Eindhoven University
of Technology, 5600 MB Eindhoven, The Netherlands
| | - Aysegul Dede Eren
- Department
of Biomedical Engineering, Eindhoven University
of Technology, 5600 MB Eindhoven, The Netherlands
| | - Lu Ge
- University
of Groningen, W. J. Kolff Institute for Biomedical Engineering and
Materials Science, Department of Biomedical Engineering, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Pamela Habibović
- Department
of Instructive Biomaterials Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Morgan R. Alexander
- School
of Pharmacy, Boots Science Building, University
of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Jan de Boer
- Department
of Biomedical Engineering, Eindhoven University
of Technology, 5600 MB Eindhoven, The Netherlands
| | - Aurélie Carlier
- Department
of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Patrick van Rijn
- University
of Groningen, W. J. Kolff Institute for Biomedical Engineering and
Materials Science, Department of Biomedical Engineering, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Qihui Zhou
- Institute
for Translational Medicine, Department of Stomatology, The Affiliated
Hospital of Qingdao University, Qingdao
University, Qingdao 266003, China
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5
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Caracciolo PC, Diaz-Rodriguez P, Ardao I, Moreira D, Montini-Ballarin F, Abraham GA, Concheiro A, Alvarez-Lorenzo C. Evaluation of human umbilical vein endothelial cells growth onto heparin-modified electrospun vascular grafts. Int J Biol Macromol 2021; 179:567-575. [PMID: 33675835 DOI: 10.1016/j.ijbiomac.2021.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 02/26/2021] [Accepted: 03/02/2021] [Indexed: 12/30/2022]
Abstract
One of the main challenges of cardiovascular tissue engineering is the development of bioresorbable and compliant small-diameter vascular grafts (SDVG) for patients where autologous grafts are not an option. In this work, electrospun bilayered bioresorbable SDVG based on blends of poly(L-lactic acid) (PLLA) and segmented polyurethane (PHD) were prepared and evaluated. The inner layer of these SDVG was surface-modified with heparin, following a methodology involving PHD urethane functional groups. Heparin was selected as anticoagulant agent, and also due to its ability to promote human umbilical vein endothelial cells (HUVECs) growth and to inhibit smooth muscle cells over-proliferation, main cause of neointimal hyperplasia and restenosis. Immobilized heparin was quantified and changes in SDVG microstructure were investigated through SEM. Tensile properties of the heparin-functionalized SDVG resembled those of saphenous vein. Vascular grafts were seeded with HUVECs and cultured on a flow-perfusion bioreactor to analyze the effect of heparin on graft endothelization under simulated physiological-like conditions. The analysis of endothelial cells attachment and gene expression (Real-Time PCR) pointed out that the surface functionalization with heparin successfully promoted a stable and functional endothelial cell layer.
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Affiliation(s)
- Pablo C Caracciolo
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales, INTEMA (UNMdP-CONICET), Av. Cristóbal Colón 10850, B7606WV Mar del Plata, Argentina.
| | - Patricia Diaz-Rodriguez
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Inés Ardao
- BioFarma Research group, Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - David Moreira
- BioFarma Research group, Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Florencia Montini-Ballarin
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales, INTEMA (UNMdP-CONICET), Av. Cristóbal Colón 10850, B7606WV Mar del Plata, Argentina
| | - Gustavo A Abraham
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales, INTEMA (UNMdP-CONICET), Av. Cristóbal Colón 10850, B7606WV Mar del Plata, Argentina
| | - Angel Concheiro
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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6
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Development of Gold Nanoparticle Micropatterns for the Electrical Detection of Proteins. NANOMATERIALS 2021; 11:nano11020528. [PMID: 33669510 PMCID: PMC7922899 DOI: 10.3390/nano11020528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/10/2021] [Accepted: 02/14/2021] [Indexed: 11/16/2022]
Abstract
Protein analysis can be used to efficiently detect the early stages of various diseases. However, conventional protein detection platforms require expensive or complex equipment, which has been a major obstacle to their widespread application. In addition, uncertain signals from non-specific adhesion interfere with the precise interpretation of the results. To overcome these problems, the development of a technique that can detect the proteins in a simple method is needed. In this study, a platform composed of gold nanoparticles (GNPs) was fabricated through a simple imprinting method for protein detection. The corrugated surface naturally formed by the nanoparticle assemblies simultaneously increases the efficiency of adhesion and binding with analytes and reduces undesired interactions. After forming the GNP micropatterns, post-functionalization with both cationic and neutral ligands was performed on the surface to manipulate their electrostatic interaction with proteins. Upon protein binding, the change in the electrical values of the micropatterns was recorded by using a resistance meter. The resistance of the positively charged micropatterns was found to increase due to the electrostatic interaction with proteins, while no significant change in resistance was observed for the neutral micropatterns after immersion in a protein solution. Additionally, the selective adsorption of fluorescent proteins onto the micropatterns was captured using confocal microscopy. These simply imprinted GNP micropatterns are sensitive platforms that can detect various analytes by measuring the electrical resistance with portable equipment.
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7
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Zhu S, Chen P, Chen Y, Li M, Chen C, Lu H. 3D-Printed Extracellular Matrix/Polyethylene Glycol Diacrylate Hydrogel Incorporating the Anti-inflammatory Phytomolecule Honokiol for Regeneration of Osteochondral Defects. Am J Sports Med 2020; 48:2808-2818. [PMID: 32762553 DOI: 10.1177/0363546520941842] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Osteoarthritis is the leading cause of disability worldwide; cartilage degeneration and defects are the central features. Significant progress in tissue engineering holds promise to regenerate damaged cartilage tissue. However, a formidable challenge is to develop a 3-dimensional (3D) tissue construct that can regulate local immune environment to facilitate the intrinsic osteochondral regeneration. PURPOSE To evaluate efficacy of a 3D-printed decellularized cartilage extracellular matrix (ECM) and polyethylene glycol diacrylate (PEGDA) integrated novel scaffold (PEGDA/ECM) together with the natural compound honokiol (Hon) for regenerating osteochondral defect. STUDY DESIGN Controlled laboratory study. METHODS We used a stereolithography-based 3D printer for PEGDA/ECM bioprinting. A total of 36 Sprague-Dawley rats with cylindrical osteochondral defect in the trochlear groove of the femur were randomly assigned into 3 different treatments: no scaffold implantation (Defect group), 3D printed PEGDA/ECM scaffold alone (PEGDA/ECM group), or Hon suspended in a 3D-printed PEGDA/ECM scaffold (PEGDA/ECM/Hon group). 12 rats that underwent only medial parapatellar incision surgery were used as normal controls. The femur specimens were postoperatively harvested at 4 and 8 weeks for gross, micro-CT, and histological evaluations. The efficacy of PEGDA/ECM/Hon scaffold on the release of proinflammatory cytokines from the macrophages stimulated by lipopolysaccharide (LPS) was evaluated in-vitro. RESULTS In vitro results determined that PEGDA/ECM/Hon scaffold could suppress the release of proinflammatory cytokines from macrophages that were stimulated by LPS. Macroscopic images showed that the PEGDA/ECM/Hon group had significantly higher ICRS scoring than that of defect and PEGDA/ECM groups. Micro-CT evaluation demonstrated that much more bony tissue was formed in the defect sites implanted with the PEGDA/ECM scaffold or PEGDA/ECM/Hon scaffold compared with the untreated defects. Histological analysis showed that the PEGDA/ECM/Hon group had a significant enhancement in osteochondral regeneration at 4 and 8 weeks after surgery in comparison with the ECM/PEGDA or defect group. CONCLUSION This study demonstrated that 3D printing of PEGDA/ECM hydrogel incorporating the anti-inflammatory phytomolecule honokiol could provide a promising scaffold for osteochondral defect repair.
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Affiliation(s)
- Shouan Zhu
- Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China.,Hunan Engineering Research Center of Sports and Health, Changsha, China.,Xiangya Hospital-International Chinese Musculoskeletal Research Society Sports Medicine Research Centre, Changsha, China
| | - Pengfei Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Yang Chen
- Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China.,Hunan Engineering Research Center of Sports and Health, Changsha, China.,Xiangya Hospital-International Chinese Musculoskeletal Research Society Sports Medicine Research Centre, Changsha, China
| | - Muzhi Li
- Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China.,Hunan Engineering Research Center of Sports and Health, Changsha, China.,Xiangya Hospital-International Chinese Musculoskeletal Research Society Sports Medicine Research Centre, Changsha, China
| | - Can Chen
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China.,Hunan Engineering Research Center of Sports and Health, Changsha, China.,Xiangya Hospital-International Chinese Musculoskeletal Research Society Sports Medicine Research Centre, Changsha, China.,Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hongbin Lu
- Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China.,Hunan Engineering Research Center of Sports and Health, Changsha, China.,Xiangya Hospital-International Chinese Musculoskeletal Research Society Sports Medicine Research Centre, Changsha, China
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8
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Polyethylene Glycol Pulsed Electrodeposition for the Development of Antifouling Coatings on Titanium. COATINGS 2020. [DOI: 10.3390/coatings10050456] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Titanium dental implants are widely used for the replacement of damaged teeth. However, bacterial infections at the interface between soft tissues and the implant can impair the functionality of the device and lead to failure. In this work, the preparation of an antifouling coating of polyethylene glycol (PEG) on titanium by pulsed electrodeposition was investigated in order to reduce Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) adhesion while maintaining human fibroblast adhesion. Different pulsed conditions were prepared and characterized by contact angle, Focused Ion Beam (FIB), Fourier Transformed Infrared Spectroscopy in the Attenuated Total Reflectance mode (ATR-FTIR), and X-ray photoelectron spectroscopy (XPS). XPS tested fibronectin adsorption. S. aureus, E. coli and human fibroblast adhesion was tested in vitro in both mono and co-culture settings. Physicochemical characterization proved useful for confirming the presence of PEG and evaluating the efficiency of the coating methods. Fibronectin adsorption decreased for all of the conditions, but an adsorption of 20% when compared to titanium was maintained, which supported fibroblast adhesion on the surfaces. In contrast, S. aureus and E. coli attachment on coated surfaces decreased up to 90% vs. control titanium. Co-culture studies with the two bacterial strains and human fibroblasts showed the efficacy of the coatings to allow for eukaryotic cell adhesion, even in the presence of pre-adhered bacteria.
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9
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Song W, Li X, Zhao Y, Liu C, Xu J, Wang H, Zhang T. Functional, UV-curable coating for the capture of circulating tumor cells. Biomater Sci 2019; 7:2383-2393. [PMID: 30916683 DOI: 10.1039/c9bm00264b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The capture of circulating tumor cells (CTCs) plays a crucial role in the early diagnosis, personalized treatment and postoperative evaluation of malignant tumors. In this study, UV-curable coating technology was combined with antibody immobilization to enable CTC captures on poly(methyl methacrylate) (PMMA) substrates. Controlled amounts of carboxyl groups and polyethylene glycol (PEG) segments were introduced into the coating formulation to facilitate immobilization of antibodies and block non-specific protein adsorption, respectively. Then, anti-EpCAM antibodies were immobilized on functionalized, coated PMMA substrates by EDC/NHS chemistry. Multiple physical, chemical and biological properties were investigated, including hydrophilicity, protein adsorption, platelet adhesion and anticoagulant properties. Thereafter, optimized coatings were applied on the inner wall of PMMA tubes, followed by immobilization of anti-EpCAM antibodies. After perfusion of the tubes with whole blood, enriched with SGC7901 gastric cancer cells that overexpress EpCAM antigens, rapid and efficient capture of the tumor cells was observed. These results provide a basis for further development of devices for the selective capture and enrichment of CTCs, using small blood volumes.
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Affiliation(s)
- Wanyun Song
- College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
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10
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Fernandez-Moure JS, Mydlowska A, Shin C, Vella M, Kaplan LJ. Nanometric Considerations in Biofilm Formation. Surg Infect (Larchmt) 2019; 20:167-173. [DOI: 10.1089/sur.2018.237] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Affiliation(s)
| | - Anna Mydlowska
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | | | - Michael Vella
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Lewis J. Kaplan
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Corporal Michael J Crescenz VA Medical Center, Philadelphia, Pennsylvania
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11
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Plasma assisted surface treatments of biomaterials. Biophys Chem 2017; 229:151-164. [DOI: 10.1016/j.bpc.2017.07.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/06/2017] [Accepted: 07/06/2017] [Indexed: 02/02/2023]
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12
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Caracciolo PC, Rial-Hermida MI, Montini-Ballarin F, Abraham GA, Concheiro A, Alvarez-Lorenzo C. Surface-modified bioresorbable electrospun scaffolds for improving hemocompatibility of vascular grafts. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:1115-1127. [DOI: 10.1016/j.msec.2017.02.151] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/13/2016] [Accepted: 02/24/2017] [Indexed: 12/25/2022]
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13
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Van Nieuwenhove I, Salamon A, Peters K, Graulus GJ, Martins JC, Frankel D, Kersemans K, De Vos F, Van Vlierberghe S, Dubruel P. Gelatin- and starch-based hydrogels. Part A: Hydrogel development, characterization and coating. Carbohydr Polym 2016; 152:129-139. [PMID: 27516257 DOI: 10.1016/j.carbpol.2016.06.098] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 06/17/2016] [Accepted: 06/26/2016] [Indexed: 11/17/2022]
Abstract
The present work aims at constructing the ideal scaffold matrix of which the physico-chemical properties can be altered according to the targeted tissue regeneration application. Ideally, this scaffold should resemble the natural extracellular matrix (ECM) as close as possible both in terms of chemical composition and mechanical properties. Therefore, hydrogel films were developed consisting of methacrylamide-modified gelatin and starch-pentenoate building blocks because the ECM can be considered as a crosslinked hydrogel network consisting of both polysaccharides and structural, signaling and cell-adhesive proteins. For the gelatin hydrogels, three different substitution degrees were evaluated including 31%, 72% and 95%. A substitution degree of 32% was applied for the starch-pentenoate building block. Pure gelatin hydrogels films as well as interpenetrating networks with gelatin and starch were developed. Subsequently, these films were characterized using gel fraction and swelling experiments, high resolution-magic angle spinning (1)H NMR spectroscopy, rheology, infrared mapping and atomic force microscopy. The results indicate that both the mechanical properties and the swelling extent of the developed hydrogel films can be controlled by varying the chemical composition and the degree of substitution of the methacrylamide-modified gelatin applied. The storage moduli of the developed materials ranged between 14 and 63kPa. Phase separation was observed for the IPNs for which separated starch domains could be distinguished located in the surrounding gelatin matrix. Furthermore, we evaluated the affinity of aggrecan for gelatin by atomic force microscopy and radiolabeling experiments. We found that aggrecan can be applied as a bioactive coating for gelatin hydrogels by a straightforward physisorption procedure. Thus, we achieved distinct fine-tuning of the physico-chemical properties of these hydrogels which render them promising candidates for tissue engineering approaches.
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Affiliation(s)
- Ine Van Nieuwenhove
- Polymer Chemistry & Biomaterials Group, Ghent University, Krijgslaan 281, Building S4-Bis, BE-9000 Ghent, Belgium
| | - Achim Salamon
- Department of Cell Biology, Rostock University Medical Center, Schillingallee 69, D-18057 Rostock, Germany
| | - Kirsten Peters
- Department of Cell Biology, Rostock University Medical Center, Schillingallee 69, D-18057 Rostock, Germany
| | - Geert-Jan Graulus
- Polymer Chemistry & Biomaterials Group, Ghent University, Krijgslaan 281, Building S4-Bis, BE-9000 Ghent, Belgium
| | - José C Martins
- NMR and Structure Analysis Research Group, Ghent University, Krijgslaan 281, Building S4, BE-9000 Ghent, Belgium
| | - Daniel Frankel
- School of Chemical Engineering and Advanced Materials, University of Newcastle, Mertz Court, Claremont Road, NE1 7RU Newcastle Upon Tyne, United Kingdom
| | - Ken Kersemans
- Laboratory of Radiopharmacy, Ghent University, Ottergemsesteenweg 460, BE-9000 Ghent, Belgium
| | - Filip De Vos
- Laboratory of Radiopharmacy, Ghent University, Ottergemsesteenweg 460, BE-9000 Ghent, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry & Biomaterials Group, Ghent University, Krijgslaan 281, Building S4-Bis, BE-9000 Ghent, Belgium; Brussels Photonics Team, Vrije Universiteit Brussel, Pleinlaan 2, BE-1050 Brussels, Belgium.
| | - Peter Dubruel
- Polymer Chemistry & Biomaterials Group, Ghent University, Krijgslaan 281, Building S4-Bis, BE-9000 Ghent, Belgium.
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Sabater I Serra R, León-Boigues L, Sánchez-Laosa A, Gómez-Estrada L, Gómez Ribelles JL, Salmeron-Sanchez M, Gallego Ferrer G. Role of chemical crosslinking in material-driven assembly of fibronectin (nano)networks: 2D surfaces and 3D scaffolds. Colloids Surf B Biointerfaces 2016; 148:324-332. [PMID: 27619185 PMCID: PMC5109969 DOI: 10.1016/j.colsurfb.2016.08.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 08/23/2016] [Accepted: 08/25/2016] [Indexed: 12/03/2022]
Abstract
Poly(ethyl acrylate) crosslinking alters adsorbed fibronectin (FN) organization. FN fibrillogenesis induced by poly(ethyl acrylate) is kept up to 2% of crosslinker. Adsorbed FN on scaffolds showed physiological-like nano(networks). FN fibrillogenesis induced by poly(ethyl acrylate) was proved in 3D environments.
Poly(ethyl acrylate) (PEA) induces the formation of biomimetic fibronectin (FN) (nano)networks upon simple adsorption from solutions, a process referred to as material-driven FN fibrillogenesis. The ability of PEA to organize FN has been demonstrated in 2D and 2.5D environments, but not as yet in 3D scaffolds, which incorporate three-dimensionality and chemical crosslinkers that may influence its fibrillogenic potential. In this paper we show for the first time that while three-dimensionality does not interfere with PEA-induced FN fibrillogenesis, crosslinking does, and we determined the maximum amount of crosslinker that can be added to PEA to maintain FN fibrillogenesis. For this, we synthesised 2D substrates with different amounts of crosslinker (1–10% of ethylene glycol dimethacrylate) and studied the role of crosslinking in FN organization using AFM. The glass transition temperature was seen to increase with crosslinking density and, accordingly, polymer segmental mobility was reduced. The organization of FN after adsorption (formation of FN fibrils) and the availability of the FN cell-binding domain were found to be dependent on crosslinking density. Surface mobility was identified as a key parameter for FN supramolecular organization. PEA networks with up to 2% crosslinker organize the FN in a similar way to non-crosslinked PEA. Scaffolds prepared with 2% crosslinker also had FN (nano)networks assembled on their walls, showing PEA’s ability to induce FN fibrillogenesis in 3D environments as long as the amounts of crosslinker is low enough.
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Affiliation(s)
- Roser Sabater I Serra
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain.
| | - Laia León-Boigues
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Spain
| | - Antonio Sánchez-Laosa
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Spain
| | | | - José Luis Gómez Ribelles
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Manuel Salmeron-Sanchez
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, United Kingdom
| | - Gloria Gallego Ferrer
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
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15
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Pijls RT, Koole LH, Hanssen HH, Nuijts RM. Flexible Coils with a Drug-Releasing Hydrophilic Coating: A New Platform for Controlled Delivery of Drugs to the Eye? J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911504045175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Delivery of drugs to the front-side of the eye is routinely done through eye drops. It is known that approximately 80% of each eye-drop is lost, as a result of rapid clearance of the tear fluid via the naso-lacrymal canal. Consequently, repeated administration through several droplets is usually necessary to achieve a desired effect, such as widening of the pupil prior to corneal surgery. A new ocular drug delivery device was studied. The new device is believed to provide a basis for a more convenient and efficient method for ocular drug delivery. The device is a metallic coil with a hydrophilic, drug-containing polymeric coating. The coil is placed in the conjuctival fornix (under the lower eye-lid) and the drug is slowly released by diffusion into the tear fluid. The capacity of the device could be increased by using the lumen of the coils as a depot for the drug to be released. Preliminary experiments with the new device were performed largely in vitro and in vivo. The latter experiments involved the release of a fluorescent dye and atropine (a potent mydriatic agent) in the eye of several healthy volunteers. The first results obtained with the new device indicate its potential utility. More research and development work is required to define the optimal design of the coil in order to minimize the risk of irritation. Furthermore, the parameters that define the kinetics of the intraocular drug release must be defined and optimized with respect to the exact application.
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Affiliation(s)
- Rachel T. Pijls
- Centre for Biomaterials Research, Faculty of Medicine, University of Maastricht, PO Box 616, NL-6200 MD Maastricht, the Netherlands and Faculty of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Leo H. Koole
- Centre for Biomaterials Research, Faculty of Medicine, University of Maastricht, PO Box 616, NL-6200 MD Maastricht, the Netherlands and Faculty of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands,
| | | | - Rudy M.M.A. Nuijts
- Department of Ophthalmology, Academic Hospital, Maastricht, the Netherlands
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16
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Mei N, Chen G, Zhou P, Chen X, Shao ZZ, Pan LF, Wu CG. Biocompatibility of Poly(ε-caprolactone) Scaffold Modified by Chitosan—The Fibroblasts Proliferation in vitro. J Biomater Appl 2016; 19:323-39. [PMID: 15788428 DOI: 10.1177/0885328205048630] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, the surface of poly("-caprolactone) (PCL) scaffold was modified by chitosan (CS) in order to enhance its cell affinity and biocompatibility. It is demonstrated by scanning electronic microscopy (SEM) that when 0.5-2.0 wt% chitosan solutions are used to modify the PCL scaffold, the amount of adhesion of the fibroblasts on the chitosan-modified PCL scaffolds dramatically increase when compared to the control after 7 days cell culture. The results indicate that the chitosan-modified PCL scaffolds are more favorable for cell proliferation by improving the scaffold biocompatibility. The improvement may be helpful for the extensive applications of PCL scaffold in heart valve and blood vessel tissue engineering.
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Affiliation(s)
- Na Mei
- The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Macromolecular Science Department, Fudan University, Shanghai 200433, P.R. China
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17
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Living biointerfaces based on non-pathogenic bacteria support stem cell differentiation. Sci Rep 2016; 6:21809. [PMID: 26902619 PMCID: PMC4763179 DOI: 10.1038/srep21809] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 01/18/2016] [Indexed: 01/01/2023] Open
Abstract
Lactococcus lactis, a non-pathogenic bacteria, has been genetically engineered to express the III7–10 fragment of human fibronectin as a membrane protein. The engineered L. lactis is able to develop biofilms on different surfaces (such as glass and synthetic polymers) and serves as a long-term substrate for mammalian cell culture, specifically human mesenchymal stem cells (hMSC). This system constitutes a living interface between biomaterials and stem cells. The engineered biofilms remain stable and viable for up to 28 days while the expressed fibronectin fragment induces hMSC adhesion. We have optimised conditions to allow long-term mammalian cell culture, and found that the biofilm is functionally equivalent to a fibronectin-coated surface in terms of osteoblastic differentiation using bone morphogenetic protein 2 (BMP-2) added to the medium. This living bacteria interface holds promise as a dynamic substrate for stem cell differentiation that can be further engineered to express other biochemical cues to control hMSC differentiation.
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18
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Kim M, Kim JS, Lee H, Jang JH. Polydopamine-Decorated Sticky, Water-Friendly, Biodegradable Polycaprolactone Cell Carriers. Macromol Biosci 2016; 16:738-47. [DOI: 10.1002/mabi.201500432] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Indexed: 01/18/2023]
Affiliation(s)
- Minhee Kim
- Department of Chemical and Biomolecular Engineering; Yonsei University; 120-749 Seoul Korea
| | - Jung-Suk Kim
- Department of Chemical and Biomolecular Engineering; Yonsei University; 120-749 Seoul Korea
| | - Haeshin Lee
- The Graduate School of Nanoscience and Technology; KAIST; 305-701 Daejeon Korea
- Department of Chemistry; KAIST; 305-701 Daejeon Korea
| | - Jae-Hyung Jang
- Department of Chemical and Biomolecular Engineering; Yonsei University; 120-749 Seoul Korea
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19
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Porous Lactose-Modified Chitosan Scaffold for Liver Tissue Engineering: Influence of Galactose Moieties on Cell Attachment and Mechanical Stability. INT J POLYM SCI 2016. [DOI: 10.1155/2016/2862738] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Galactosylated chitosan (CTS) has been widely applied in liver tissue engineering as scaffold. However, the influence of degree of substitution (DS) of galactose moieties on cell attachment and mechanical stability is not clear. In this study, we synthesized the lactose-modified chitosan (Lact-CTS) with various DS of galactose moieties by Schiff base reaction and reducing action of NaBH4, characterized by FTIR. The DS of Lact-CTS-1, Lact-CTS-2, and Lact-CTS-3 was 19.66%, 48.62%, and 66.21% through the method of potentiometric titration. The cell attachment of hepatocytes on the CTS and Lact-CTS films was enhanced accompanied with the increase of galactose moieties on CTS chain because of the galactose ligand-receptor recognition; however, the mechanical stability of Lact-CTS-3 was reduced contributing to the extravagant hydrophilicity, which was proved using the sessile drop method. Then, the three-dimensional Lact-CTS scaffolds were fabricated by freezing-drying technique. The SEM images revealed the homogeneous pore bearing the favorable connectivity and the pore sizes of scaffolds with majority of 100 μm; however, the extract solution of Lact-CTS-3 scaffold significantly damaged red blood cells by hemolysis assay, indicating that exorbitant DS of Lact-CTS-3 decreased the mechanical stability and increased the toxicity. To sum up, the Lact-CTS-2 with 48.62% of galactose moieties could facilitate the cell attachment and possess great biocompatibility and mechanical stability, indicating that Lact-CTS-2 was a promising material for liver tissue engineering.
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20
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Góra A, Prabhakaran MP, Eunice GTL, Lakshminarayanan R, Ramakrishna S. Silver nanoparticle incorporated poly(l-lactide-co-glycolide) nanofibers: Evaluation of their biocompatibility and antibacterial properties. J Appl Polym Sci 2015. [DOI: 10.1002/app.42686] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Aleksander Góra
- Center for Nanofibers and Nanotechnology; Department of Mechanical Engineering; National University of Singapore; 2 Engineering Drive 3 117576 Singapore Singapore
| | - Molamma P. Prabhakaran
- Center for Nanofibers and Nanotechnology; Department of Mechanical Engineering; National University of Singapore; 2 Engineering Drive 3 117576 Singapore Singapore
| | - Goh Tze Leng Eunice
- Anti-Infectives Research Group, Singapore Eye Research Institute; Singapore 168751 Singapore
| | - Rajamani Lakshminarayanan
- Anti-Infectives Research Group, Singapore Eye Research Institute; Singapore 168751 Singapore
- Duke-NUS SRP Neuroscience and Behavioural Disorders; Singapore 169857 Singapore
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology; Department of Mechanical Engineering; National University of Singapore; 2 Engineering Drive 3 117576 Singapore Singapore
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21
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Kutikov AB, Skelly JD, Ayers DC, Song J. Templated repair of long bone defects in rats with bioactive spiral-wrapped electrospun amphiphilic polymer/hydroxyapatite scaffolds. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4890-901. [PMID: 25695310 PMCID: PMC8084116 DOI: 10.1021/am508984y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Effective repair of critical-size long bone defects presents a significant clinical challenge. Electrospun scaffolds can be exploited to deliver protein therapeutics and progenitor cells, but their standalone application for long bone repair has not been explored. We have previously shown that electrospun composites of amphiphilic poly(d,l-lactic acid)-co-poly(ethylene glycol)-co-poly(d,l-lactic acid) (PELA) and hydroxyapatite (HA) guide the osteogenic differentiation of bone marrow stromal cells (MSCs), making these scaffolds uniquely suited for evaluating cell-based bone regeneration approaches. Here we examine whether the in vitro bioactivity of these electrospun scaffolds can be exploited for long bone defect repair, either through the participation of exogenous MSCs or through the activation of endogenous cells by a low dose of recombinant human bone morphogenetic protein-2 (rhBMP-2). In critical-size rat femoral segmental defects, spiral-wrapped electrospun HA-PELA with preseeded MSCs resulted in laminated endochondral ossification templated by the scaffold across the longitudinal span of the defect. Using GFP labeling, we confirmed that the exogenous MSCs adhered to HA-PELA survived at least 7 days postimplantation, suggesting direct participation of these exogenous cells in templated bone formation. When loaded with 500 ng of rhBMP-2, HA-PELA spirals led to more robust but less clearly templated bone formation than MSC-bearing scaffolds. Both treatment groups resulted in new bone bridging over the majority of the defect by 12 weeks. This study is the first demonstration of a standalone bioactive electrospun scaffold for templated bone formation in critical-size long bone defects.
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Affiliation(s)
- Artem B. Kutikov
- Department of Orthopedics and Physical Rehabilitation. University of Massachusetts Medical School.55 Lake Ave North, Worcester, MA 01655, USA
- Department of Cell and Developmental Biology. University of Massachusetts Medical School. 55 Lake Ave North, Worcester, MA 01655, USA
| | - Jordan D. Skelly
- Department of Orthopedics and Physical Rehabilitation. University of Massachusetts Medical School.55 Lake Ave North, Worcester, MA 01655, USA
| | - David C. Ayers
- Department of Orthopedics and Physical Rehabilitation. University of Massachusetts Medical School.55 Lake Ave North, Worcester, MA 01655, USA
| | - Jie Song
- Department of Orthopedics and Physical Rehabilitation. University of Massachusetts Medical School.55 Lake Ave North, Worcester, MA 01655, USA
- Department of Cell and Developmental Biology. University of Massachusetts Medical School. 55 Lake Ave North, Worcester, MA 01655, USA
- Corresponding Author; phone: 1-508-334-7168; fax: 1-508-334-2770
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22
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Vanterpool FA, Cantini M, Seib FP, Salmerón-Sánchez M. A material-based platform to modulate fibronectin activity and focal adhesion assembly. Biores Open Access 2014; 3:286-96. [PMID: 25469314 PMCID: PMC4245838 DOI: 10.1089/biores.2014.0033] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We present a detailed characterization of fibronectin (FN) adsorption and cell adhesion on poly(ethyl acrylate) (PEA) and poly(methyl acrylate) (PMA), two polymers with very similar physicochemical properties and chemical structure, which differ in one single methyl group in the lateral chain of the polymer. The globular solution conformation of FN was retained following adsorption onto PMA, whereas spontaneous organization of FN into protein (nano) networks occurred on PEA. This distinct distribution of FN at the material interface promoted a different availability, measured via monoclonal antibody binding, of two domains that facilitated integrin binding to FN: FNIII10 (RGD sequence) and FNIII9 (PHSRN synergy sequence). The enhanced exposure of the synergy domain on PEA compared to PMA triggered different focal adhesion assemblies: L929 fibroblasts showed a higher fraction of smaller focal plaques on PMA (40%) than on PEA (20%). Blocking experiments with monoclonal antibodies against FNIII10 (HFN7.1) and FNIII9 (mAb1937) confirmed the ability of these polymeric substrates to modulate FN conformation. Overall, we propose a simple and versatile material platform that can be used to tune the presentation of a main extracellular matrix protein (FN) to cells, for applications than span from tissue engineering to disease biology.
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Affiliation(s)
- Frankie A. Vanterpool
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United Kingdom
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Marco Cantini
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United Kingdom
| | - F. Philipp Seib
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Manuel Salmerón-Sánchez
- Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United Kingdom
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23
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Combinatorial plasma polymerization approach to produce thin films for testing cell proliferation. Colloids Surf B Biointerfaces 2014; 113:320-9. [DOI: 10.1016/j.colsurfb.2013.09.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 08/07/2013] [Accepted: 09/09/2013] [Indexed: 11/23/2022]
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24
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Ortega Í, Deshpande P, Gill AA, MacNeil S, Claeyssens F. Development of a microfabricated artificial limbus with micropockets for cell delivery to the cornea. Biofabrication 2013; 5:025008. [DOI: 10.1088/1758-5082/5/2/025008] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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25
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Ren F, Gao Y, Chen J, Jing Q, Yu Y. New self-nanoemulsifying drug delivery system (SNEDDS) with amphiphilic diblock copolymer methoxy poly (ethylene glycol)-block-poly (ε-caprolactone). Pharm Dev Technol 2013; 18:745-51. [PMID: 23477527 DOI: 10.3109/10837450.2012.734517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The objective of the study is to prepare a new self-nanoemulsifying drug delivery system (SNEDDS) with amphiphilic diblock copolymers methoxy poly (ethylene glycol)-block-poly (ε-caprolactone) (MPEG-b-PCL) and to investigate the effect of MPEG-b-PCL on the characteristics of SNEDDS. MPEG-b-PCL was synthesized and characterized by (1)H-NMR, IR and GPC. Various ratios of MPEG-b-PCL copolymers and Tween 80 were used as emulsifier to prepare the new SNEDDS. SNEDDS with high oil and low surfactant content forms a semi-solid gel at room temperature, which could be effectively sealed in soft or hard capsules. The mean droplet size of SNEDDS-generated nanoemulsions significantly decreased after the addition of diblock polymer and increased with increase of PCL chain in MPEG-b-PCL. The drug Coenzyme Q10 (CoQ10) was chosen as the model compound in this study due to its insolubility in water. CoQ10 from SNEDDS was rapidly dissolved regardless of the fluid condition.
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Affiliation(s)
- Fuzheng Ren
- Department of Pharmaceutical Engineering, Shanghai Key Lab New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
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26
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Surface modification of polycarbonate urethane by covalent linkage of heparin with a PEG spacer. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s12209-013-1894-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Cantini M, Sousa M, Moratal D, Mano JF, Salmerón-Sánchez M. Non-monotonic cell differentiation pattern on extreme wettability gradients. Biomater Sci 2012; 1:202-212. [PMID: 32481800 DOI: 10.1039/c2bm00063f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this study, we propose a methodology to obtain a family of biomimetic substrates with a hierarchical rough topography at the micro and nanoscale that span the entire range of wettability, from the superhydrophobic to the superhydrophilic regime, through an Ar-plasma treatment at increasing durations. Moreover, we employ the same approach to produce a superhydrophobic-to-superhydrophilic surface gradient along centimetre-length scale distances within the same sample. We characterize the biological activity of these surfaces in terms of protein adsorption and cell response, using fibronectin, a major component of the extracellular matrix, and C2C12 cells, a myoblast cell line. Fibronectin conformation, assessed via binding of the monoclonal antibody HFN7.1, exhibits a non-monotonic dependence on surface wettability, with higher activity on hydrophilic substrates (WCA = 38.6 ± 8.1°). On the other hand, the exposition of cell-binding epitopes is diminished on the surfaces with extreme wetting properties, the conformation being particularly altered on the superhydrophobic substrate. The assessment of cell response via the myogenic differentiation process reveals that a gradient surface promotes a different response with respect to cells cultured on discrete uniform samples: even though in both cases the same non-monotonic differentiation pattern is found, the differential response to the various wettabilities is enhanced along the gradient while the overall levels of differentiation are diminished. On a gradient surface cells are in fact exposed to a range of continuously changing stimuli that foster cell migration and detain the differentiation process.
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Affiliation(s)
- Marco Cantini
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Valencia, Spain.
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28
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Wang H, Feng Y, An B, Zhang W, Sun M, Fang Z, Yuan W, Khan M. Fabrication of PU/PEGMA crosslinked hybrid scaffolds by in situ UV photopolymerization favoring human endothelial cells growth for vascular tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:1499-1510. [PMID: 22430593 DOI: 10.1007/s10856-012-4613-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Accepted: 03/07/2012] [Indexed: 05/31/2023]
Abstract
Poly(ethylene glycol) methacrylate (PEGMA) was introduced into a polyurethane (PU) solution in order to prepare electrospun scaffold with improving the biocompatibility by electrospinning technology for potential application as small diameter vascular scaffolds. Crosslinked electrospun PU/PEGMA hybrid nanofibers were fabricated by a reactive electrospinning process with N,N'-methylenebisacrylamide as crosslinker and benzophenone as photoinitiator. The photoinduced polymerization and crosslinking reaction took place simultaneously during the electrospinning process. The electrospinning solutions with various weight ratios of PU/PEGMA were successfully electrospun. No significant difference in the scaffold morphology was found by SEM when PEGMA content was <20 wt%. The crosslinked fibrous scaffolds of PU/PEGMA exhibited higher mechanical strength than the pure PU scaffold. The hydrophilicity of scaffolds was controlled by varying the PU/PEGMA weight ratio. The tissue compatibility of electrospun nanofibrous scaffolds were tested using human umbilical vein endothelial cells (HUVECs). Cell morphology and cell proliferation were measured by SEM, fluorescence microscopy and thiazolyl blue assay (MTT) after 1, 3, 7 days of culture. The results indicated that the cell morphology and proliferation on the crosslinked PU/PEGMA scaffolds were better than that on the pure PU scaffold. Furthermore, the appropriate hydrophilic surface with water contact angle in the range of 55-75° was favorable of improvement the HUVECs adhesion and proliferation. Cells seeded on the crosslinked PU/PEGMA (80/20) scaffolds infiltrated into the scaffolds after 7 days of growth. These results indicated the crosslinked electrospun PU/PEGMA nanofibrous scaffolds were potential substitutes for artificial vascular scaffolds.
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Affiliation(s)
- Heyun Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
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Liu Z, Deng X, Wang M, Chen J, Zhang A, Gu Z, Zhao C. BSA-Modified Polyethersulfone Membrane: Preparation, Characterization and Biocompatibility. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 20:377-97. [DOI: 10.1163/156856209x412227] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Zongbin Liu
- a College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Xiaopei Deng
- b College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Meng Wang
- c College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Jingxia Chen
- d College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Aimin Zhang
- e College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Zhongwei Gu
- f National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, People's Republic of China
| | - Changsheng Zhao
- g College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China; National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, People's Republic of China
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Desmet T, Poleunis C, Delcorte A, Dubruel P. Double protein functionalized poly-ε-caprolactone surfaces: in depth ToF-SIMS and XPS characterization. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:293-305. [PMID: 22203514 DOI: 10.1007/s10856-011-4527-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Accepted: 12/09/2011] [Indexed: 05/31/2023]
Abstract
In biomaterial research, great attention has focussed on the immobilization of biomolecules with the aim to increase cell-adhesive properties of materials. Many different strategies can be applied. In previously published work, our group focussed on the treatment of poly-ε-caprolactone (PCL) films by an Ar-plasma, followed by the grafting of 2-aminoethyl methacrylate (AEMA) under UV-irradiation. The functional groups introduced, enabled the subsequent covalent immobilisation of gelatin. The obtained coating was finally applied for the physisorption of fibronectin. The successful PCL surface functionalization was preliminary confirmed using XPS, wettability studies, AFM and SEM. In the present article, we report on an in-depth characterization of the materials developed using ToF-SIMS and XPS analysis. The homogeneous AEMA grafting and the subsequent protein coating steps could be confirmed by both XPS and ToF-SIMS. Using ToF-SIMS, it was possible to demonstrate the presence of polymethacrylates on the surface. From peak deconvoluted XPS results (C- and N-peak), the presence of proteins could be confirmed. Using ToF-SIMS, different positive ions, correlating to specific amino-acids could be identified. Importantly, the gelatin and the fibronectin coatings could be qualitatively distinguished. Interestingly for biomedical applications, ethylene oxide sterilization did not affect the surface chemical composition. This research clearly demonstrates the complementarities of XPS and ToF-SIMS in biomedical surface modification research.
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Affiliation(s)
- T Desmet
- Polymer Chemistry & Biomaterials Research Group, Ghent University, Ghent, Belgium
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31
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Zhao H, Feng Y, Guo J. Grafting of poly(ethylene glycol) monoacrylate onto polycarbonateurethane surfaces by ultraviolet radiation grafting polymerization to control hydrophilicity. J Appl Polym Sci 2010. [DOI: 10.1002/app.32997] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Yen C, He H, Fei Z, Zhang X, Lee LJ, Ho WSW. Surface Modification of Nanoporous Poly(ϵ-caprolactone) Membrane with Poly(ethylene glycol) to Prevent Biofouling: Part I. Effects of Plasma Power and Treatment Time. INT J POLYM MATER PO 2010. [DOI: 10.1080/00914037.2010.504162] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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33
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Yen C, He H, Fei Z, Zhang X, Lee LJ, Ho WSW. Surface Modification of Nanoporous Poly(ϵ-caprolactone) Membrane with Poly(ethylene glycol) to Prevent Biofouling: Part II. Effects of Graft Density and Chain Length. INT J POLYM MATER PO 2010. [DOI: 10.1080/00914037.2010.504164] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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34
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Skardal A, Zhang J, Prestwich GD. Bioprinting vessel-like constructs using hyaluronan hydrogels crosslinked with tetrahedral polyethylene glycol tetracrylates. Biomaterials 2010; 31:6173-81. [PMID: 20546891 DOI: 10.1016/j.biomaterials.2010.04.045] [Citation(s) in RCA: 248] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Accepted: 04/21/2010] [Indexed: 02/07/2023]
Abstract
Bioprinting enables deposition of cells and biomaterials into spatial orientations and complexities that mirror physiologically relevant geometries. To facilitate the development of bioartificial vessel-like grafts, two four-armed polyethylene glycol (PEG) derivatives with different PEG chain lengths, TetraPEG8 and TetraPEG13, were synthesized from tetrahedral pentaerythritol derivatives. The TetraPEGs are unique multi-armed PEGs with a compact and symmetrical core. The TetraPEGs were converted to tetra-acrylate derivatives (TetraPAcs) which were used in turn to co-crosslink thiolated hyaluronic acid and gelatin derivatives into extrudable hydrogels for printing tissue constructs. First, the hydrogels produced by TetraPAc crosslinking showed significantly higher shear storage moduli when compared to PEG diacrylate (PEGDA)-crosslinked synthetic extracellular matrices (sECMs) of similar composition. These stiffer hydrogels have rheological properties more suited to bioprinting high-density cell suspensions. Second, TetraPAc-crosslinked sECMs were equivalent or superior to PEGDA-crosslinked gels in supporting cell growth and proliferation. Third, the TetraPac sECMs were employed in a proof-of-concept experiment by encapsulation of NIH 3T3 cells in sausage-like hydrogel macrofilaments. These macrofilaments were then printed into tubular tissue constructs by layer-by-layer deposition using the Fab@Home printing system. LIVE/DEAD viability/cytotoxicity-stained cross-sectional images showed the bioprinted cell structures to be viable in culture for up to 4 weeks with little evidence of cell death. Thus, biofabrication of cell suspensions in TetraPAc sECMs demonstrates the feasibility of building bioartificial blood vessel-like constructs for research and potentially clinical uses.
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Affiliation(s)
- Aleksander Skardal
- Department of Bioengineering, University of Utah, 419 Wakara Way, Suite 205, Salt Lake City, UT 84108, USA
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35
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Desmet T, Billiet T, Berneel E, Cornelissen R, Schaubroeck D, Schacht E, Dubruel P. Post-Plasma Grafting of AEMA as a Versatile Tool to Biofunctionalise Polyesters for Tissue Engineering. Macromol Biosci 2010; 10:1484-94. [DOI: 10.1002/mabi.201000147] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Revised: 05/29/2010] [Indexed: 11/06/2022]
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36
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Feng Y, Zhao H, Zhang L, Guo J. Surface modification of biomaterials by photochemical immobilization and photograft polymerization to improve hemocompatibility. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11705-010-0005-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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37
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Chemical and Physical Modifications of Biomaterial Surfaces to Control Adhesion of Cells. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/978-90-481-8790-4_13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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38
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Rico P, Rodríguez Hernández JC, Moratal D, Altankov G, Monleón Pradas M, Salmerón-Sánchez M. Substrate-induced assembly of fibronectin into networks: influence of surface chemistry and effect on osteoblast adhesion. Tissue Eng Part A 2010; 15:3271-81. [PMID: 19382854 DOI: 10.1089/ten.tea.2009.0141] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The influence of surface chemistry-substrates with controlled surface density of -OH groups-on fibronectin (FN) conformation and distribution is directly observed by atomic force microscopy (AFM). FN fibrillogenesis, which is known to be a process triggered by interaction with integrins, is shown in our case to be induced by the substrate (in absence of cells), which is able to enhance FN-FN interactions leading to the formation of a protein network on the material surface. This phenomenon depends both on surface chemistry and protein concentration. The level of the FN fibrillogenesis was quantified by calculating the fractal dimension of the adsorbed protein from image analysis of the AFM results. The total amount of adsorbed FN is obtained by making use of a methodology that employs Western blotting combined with image analysis of the corresponding protein bands, with the lowest sensitivity threshold equal to 15 ng of adsorbed protein. Further, FN adsorption is correlated to human osteoblast adhesion through morphology and actin cytoskeleton formation. Actin polymerization is in need of the formation of the protein network on the substrate's surface. Cell morphology is more rounded (as quantified by calculating the circularity of the cells by image analysis) when the degree of FN fibrillogenesis on the substrate is lower.
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Affiliation(s)
- Patricia Rico
- Center for Biomaterials and Tissue Engineering, Universidad Politécnica de Valencia, Valencia, Spain
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39
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Pashkuleva I, Marques AP, Vaz F, Reis RL. Surface modification of starch based biomaterials by oxygen plasma or UV-irradiation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:21-32. [PMID: 19639265 DOI: 10.1007/s10856-009-3831-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2008] [Accepted: 07/16/2009] [Indexed: 05/28/2023]
Abstract
Radiation is widely used in biomaterials science for surface modification and sterilization. Herein, we describe the use of plasma and UV-irradiation to improve the biocompatibility of different starch-based blends in terms of cell adhesion and proliferation. Physical and chemical changes, introduced by the used methods, were evaluated by complementary techniques for surface analysis such as scanning electron microscopy, atomic force microscopy, contact angle analysis and X-ray photoelectron spectroscopy. The effect of the changed surface properties on the adhesion of osteoblast-like cells was studied by a direct contact assay. Generally, both treatments resulted in higher number of cells adhered to the modified surfaces. The importance of the improved biocompatibility resulting from the irradiation methods is further supported by the knowledge that both UV and plasma treatments can be used as cost-effective methods for sterilization of biomedical materials and devices.
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Affiliation(s)
- Iva Pashkuleva
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, University of Minho, AvePark, Taipas, Guimarães, Portugal.
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40
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Gugutkov D, Altankov G, RodrÃguez Hernández JC, Monleón Pradas M, Salmerón Sánchez M. Fibronectin activity on substrates with controlled OH density. J Biomed Mater Res A 2010; 92:322-31. [DOI: 10.1002/jbm.a.32374] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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41
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Cometa S, Chiellini F, Bartolozzi I, Chiellini E, De Giglio E, Sabbatini L. Surface Segregation Assessment In Poly(ε
-caprolactone)-poly(ethylene glycol) Multiblock Copolymer Films. Macromol Biosci 2009; 10:317-27. [DOI: 10.1002/mabi.200900284] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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Van Vlierberghe S, Vanderleyden E, Dubruel P, De Vos F, Schacht E. Affinity Study of Novel Gelatin Cell Carriers for Fibronectin. Macromol Biosci 2009; 9:1105-15. [DOI: 10.1002/mabi.200900043] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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43
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Gugutkov D, González-García C, Rodríguez Hernández JC, Altankov G, Salmerón-Sánchez M. Biological activity of the substrate-induced fibronectin network: insight into the third dimension through electrospun fibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:10893-10900. [PMID: 19735141 DOI: 10.1021/la9012203] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Fibronectin (FN) fibrillogenesis is a cell-mediated process involving integrin activation that results in conformational changes of FN molecules and the organization of actin cytoskeleton. A similar process can be induced by some chemistries in the absence of cells, e.g., poly(ethyl acrylate) (PEA), which enhance FN-FN interactions leading to the formation of a biologically active network. Atomic force microscopy images of single FN molecules, at the early stages of adsorption on plane PEA, allow one to rationalize the process. Further, the role of the spatial organization of the FN network on the cellular response is investigated through its adsorption on electrospun fibers. Randomly oriented and aligned PEA fibers were prepared to mimic the three-dimensional organization of the extracellular matrix. The formation of the FN network on the PEA fibers but not on the supporting coverglass was confirmed. Fibroblasts aligned with oriented fibers, displayed extended morphology, developed linearly organized focal adhesion complexes, and matured actin filaments. Conversely, on random PEA fibers, cells acquired polygonal morphology with altered actin cytoskeleton but well-developed focal adhesions. Late FN matrix formation was also influenced: spatially organized FN matrix fibrils along the oriented PEA fibers and an altered arrangement on random ones.
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Affiliation(s)
- Dencho Gugutkov
- Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain
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44
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Van Vlierberghe S, De Wael K, Buschop H, Adriaens A, Schacht E, Dubruel P. Ozonization and cyclic voltammetry as efficient methods for the regeneration of gelatin-coated SPR chips. Macromol Biosci 2009; 8:1090-7. [PMID: 18655031 DOI: 10.1002/mabi.200800074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The application of ozonization and cyclic voltammetry for the regeneration of gold chips containing a chemisorbed gelatin layer is reported. The efficiency of the regeneration process was analyzed using various surface analysis techniques indicating a complete removal of the biopolymer layer. The current findings open up perspectives for regeneration and multiple application of gold chips for SPR measurements.
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46
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Dekeyser CM, Zuyderhoff E, Giuliano RE, Federoff HJ, Dupont-Gillain CC, Rouxhet PG. A rough morphology of the adsorbed fibronectin layer favors adhesion of neuronal cells. J Biomed Mater Res A 2008; 87:116-28. [DOI: 10.1002/jbm.a.31739] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Kinetics of conformational changes of fibronectin adsorbed onto model surfaces. Colloids Surf B Biointerfaces 2008; 63:129-37. [DOI: 10.1016/j.colsurfb.2007.11.015] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2007] [Revised: 11/12/2007] [Accepted: 11/23/2007] [Indexed: 01/13/2023]
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48
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Patterson TE, Kumagai K, Griffith L, Muschler GF. Cellular strategies for enhancement of fracture repair. J Bone Joint Surg Am 2008; 90 Suppl 1:111-9. [PMID: 18292365 DOI: 10.2106/jbjs.g.01572] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Tissue engineering seeks to translate scientific knowledge into tangible products to advance the repair, replacement, or regeneration of organs and tissues. Current tissue engineering strategies have progressed recently from a historical approach that is based primarily on biomaterials to a cell and tissue-based approach that includes understanding of cell-sourcing and bioactive stimuli. New options include methods for harvest and transplantation of tissue-forming cells, bioactive matrix materials that act as tissue scaffolds, and delivery of bioactive molecules within scaffolds. These strategies are already benefiting patients, and they place increasing demands on orthopaedic surgeons to have a solid foundation in the contemporary concepts and principles of cell-based tissue engineering. Essentially all orthopaedic tissue engineering strategies can be distilled to a strategy or combination of strategies that seek to increase the number or relative performance of bone-forming cells. The global term connective tissue progenitors has been used to define the heterogeneous populations of stem and progenitor cells that are found in native tissue and that are capable of differentiating into one or more connective tissue phenotypes. These stem or progenitor populations are found in various tissue sources, with varying degrees of ability to differentiate along connective tissue lineages. Available cell-based strategies include targeting local cells with use of scaffolds or bioactive factors, or transplantation of autogenous connective tissue progenitor cells derived from bone marrow or other tissues, with or without processing to change their concentration or prevalence. The future may include means of homing circulating connective tissue progenitor cells with use of intrinsic chemokine systems, or modifying the biological performance of connective tissue progenitor cells by means of genetic modifications.
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Affiliation(s)
- Thomas E Patterson
- Department of Orthopaedic Surgery, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
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49
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Ren TB, Weigel T, Groth T, Lendlein A. Microwave plasma surface modification of silicone elastomer with allylamine for improvement of biocompatibility. J Biomed Mater Res A 2008; 86:209-19. [DOI: 10.1002/jbm.a.31508] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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50
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Heilmann K, Groth T, Schossig M, Lendlein A, Micheel B. Modulation of hybridoma cell growth and antibody production by coating cell culture material with extracellular matrix proteins. Biochem Eng J 2007. [DOI: 10.1016/j.bej.2007.01.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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