51
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Kim AY, Kim Y, Lee SH, Yoon Y, Kim WH, Kweon OK. Effect of Gelatin on Osteogenic Cell Sheet Formation Using Canine Adipose-Derived Mesenchymal Stem Cells. Cell Transplant 2016; 26:115-123. [PMID: 27725063 DOI: 10.3727/096368916x693338] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Osteogenically differentiated cell sheet techniques using mesenchymal stem cells (MSCs) are available to stimulate bone regeneration. The advantage of the cell sheet technique is delivering live cells effectively into the focal region. We developed a novel osteogenic cell sheet technique by adding gelatin to osteogenic cell medium. Gelatin-induced osteogenic cell sheets (GCSs) were compared to conventional osteogenic cell sheets (OCSs). Undifferentiated MSCs (UCs) were used as a control. The morphology of these cell sheets was evaluated microscopically and histologically. The time-dependent cell proliferation rate was estimated by DNA quantification. The expression of osteogenic gene markers and the number of calcium depositions were assessed by quantitative real-time polymerase chain reaction and Alizarin red S (ARS) staining, respectively. GCSs were thicker and stronger than OCSs. GCSs showed a significantly higher cell proliferation rate compared to OCSs (p < 0.05). GCSs exhibited significantly higher upregulation of BMP-7 mRNA compared to OCSs (p < 0.05). Both GCSs and OCSs showed negative ARS reactivity on day 10, but only GCSs showed positive ARS reactivity on day 21. With this technique, we observed active cell proliferation with abundant ECM and upregulation of osteogenic bone markers, and our results suggest that GCSs could be promising for therapeutic applications in bone regeneration.
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52
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Kim S, Cui ZK, Fan J, Fartash A, Aghaloo TL, Lee M. Photocrosslinkable chitosan hydrogels functionalized with the RGD peptide and phosphoserine to enhance osteogenesis. J Mater Chem B 2016; 4:5289-5298. [PMID: 28044100 PMCID: PMC5200955 DOI: 10.1039/c6tb01154c] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Hydrogels derived from naturally occurring polymers are attractive matrix for tissue engineering. Here, we report a biofunctional hydrogel for specific use in bone regeneration by introducing Arg-Gly-Asp (RGD)-containing cell adhesive motifs and phosphorylated serine residues, which are prevalent in native bone extracellular matrix and known to promote osteogenesis by enhancing cell-matrix interactions and hydroxyapatite nucleation, into photopolymerizable methacrylated glycol chitosan (MeGC). Incorporation of phosphoserine into MeGC hydrogels increased the ability of the hydrogels to nucleate mineral on their surfaces. RGD incorporation enhanced cell-matrix interactions by supporting attachment, spreading, and proliferation of bone marrow stromal cells (BMSCs) encapsulated in the hydrogels. Moreover, co-modification of MeGC hydrogels with RGD and phosphoserine synergistically increased osteogenic differentiation of encapsulated BMSCs in vitro. The bone healing capacity of the modified hydrogels was further confirmed in a mouse calvarial defect model. These findings suggest a promising hydrogel platform with a specific microenvironment tailored to promote osteogenesis for clinical bone repair.
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Affiliation(s)
- Soyon Kim
- Department of Bioengineering, University of California, Los
Angeles, USA
| | - Zhong-Kai Cui
- Division of Advanced Prosthodontics, University of California,
Los Angeles, USA
| | - Jiabing Fan
- Division of Advanced Prosthodontics, University of California,
Los Angeles, USA
| | - Armita Fartash
- Division of Diagnostic and Surgical Sciences, University of
California, Los Angeles, USA
| | - Tara L. Aghaloo
- Division of Diagnostic and Surgical Sciences, University of
California, Los Angeles, USA
| | - Min Lee
- Department of Bioengineering, University of California, Los
Angeles, USA
- Division of Advanced Prosthodontics, University of California,
Los Angeles, USA
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53
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Ren Y, Sun X, Cui F, Wei Y, Cheng Z, Kong X. Preparation and Characterization of Antheraea pernyi Silk Fibroin Based Nanohydroxyapatite Composites. J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911507082407] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the present study, Antheraea pernyi silk fibroin (Ap-SF) is employed to regulate the mineralization of hydroxyapatite (HAp) nanocrystals. Calcium phosphate crystals precipitate in the aqueous solution of regenerated Ap-SF at pH 7.4 and room temperature. The samples are charaterized with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Based on the XRD results, the inorganic phase in the mineralized Ap-SF composites is HAp as small particles with low crystallinity. The FTIR analysis reveals that the HAp crystals are carbonate-substituted HAp and compounded with Ap-SF. The TEM images show mineralized nanofibrils in the composites as rod-like shapes 4—5 nm in diameter. Electron diffraction (SAED) patterns of selected areas of the composites exhibit polycrystalline rings that are ascribed to HAp. SEM images show mineralized Ap-SF composites with several mineralized rods 49—74 nm in diameter.
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Affiliation(s)
- Y.J. Ren
- Biomaterials Laboratory, Department of Material Science and Engineering Tsinghua University, Beijing 100084, China
| | - X.D. Sun
- Biomaterials Laboratory, Department of Material Science and Engineering Tsinghua University, Beijing 100084, China
| | - F.Z. Cui
- Biomaterials Laboratory, Department of Material Science and Engineering Tsinghua University, Beijing 100084, China,
| | - Y.T. Wei
- Biomaterials Laboratory, Department of Material Science and Engineering Tsinghua University, Beijing 100084, China
| | - Z.J. Cheng
- Biomaterials Laboratory, Department of Material Science and Engineering Tsinghua University, Beijing 100084, China
| | - X.D. Kong
- Biomaterials Laboratory, Department of Material Science and Engineering Tsinghua University, Beijing 100084, China
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54
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Pountos I, Panteli M, Lampropoulos A, Jones E, Calori GM, Giannoudis PV. The role of peptides in bone healing and regeneration: a systematic review. BMC Med 2016; 14:103. [PMID: 27400961 PMCID: PMC4940902 DOI: 10.1186/s12916-016-0646-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Bone tissue engineering and the research surrounding peptides has expanded significantly over the last few decades. Several peptides have been shown to support and stimulate the bone healing response and have been proposed as therapeutic vehicles for clinical use. The aim of this comprehensive review is to present the clinical and experimental studies analysing the potential role of peptides for bone healing and bone regeneration. METHODS A systematic review according to PRISMA guidelines was conducted. Articles presenting peptides capable of exerting an upregulatory effect on osteoprogenitor cells and bone healing were included in the study. RESULTS Based on the available literature, a significant amount of experimental in vitro and in vivo evidence exists. Several peptides were found to upregulate the bone healing response in experimental models and could act as potential candidates for future clinical applications. However, from the available peptides that reached the level of clinical trials, the presented results are limited. CONCLUSION Further research is desirable to shed more light into the processes governing the osteoprogenitor cellular responses. With further advances in the field of biomimetic materials and scaffolds, new treatment modalities for bone repair will emerge.
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Affiliation(s)
- Ippokratis Pountos
- Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, UK
| | - Michalis Panteli
- Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, UK
| | | | - Elena Jones
- Unit of Musculoskeletal Disease, Leeds Institute of Rheumatic and Musculoskeletal Medicine, St. James University Hospital, University of Leeds, LS9 7TF, Leeds, UK
| | - Giorgio Maria Calori
- Department of Trauma & Orthopaedics, School of Medicine, ISTITUTO ORTOPEDICO GAETANO PINI, Milan, Italy
| | - Peter V Giannoudis
- Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, UK. .,NIHR Leeds Biomedical Research Unit, Chapel Allerton Hospital, LS7 4SA Leeds, West Yorkshire, Leeds, UK.
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55
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Jin E, Lee PT, Jeon WB, Li WJ. Effects of Elastin-Like Peptide on Regulation of Human Mesenchymal Stem Cell Behavior. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2016. [DOI: 10.1007/s40883-016-0015-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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56
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Mas-Moruno C, Fraioli R, Rechenmacher F, Neubauer S, Kapp TG, Kessler H. αvβ3- or α5β1-Integrin-Selective Peptidomimetics for Surface Coating. Angew Chem Int Ed Engl 2016; 55:7048-67. [PMID: 27258759 DOI: 10.1002/anie.201509782] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Indexed: 12/21/2022]
Abstract
Engineering biomaterials with integrin-binding activity is a very powerful approach to promote cell adhesion, modulate cell behavior, and induce specific biological responses at the surface level. The aim of this Review is to illustrate the evolution of surface-coating molecules in this field: from peptides and proteins with relatively low integrin-binding activity and receptor selectivity to highly active and selective peptidomimetic ligands. In particular, we will bring into focus the difficult challenge of achieving selectivity between the two closely related integrin subtypes αvβ3 and α5β1. The functionalization of surfaces with such peptidomimetics opens the way for a new generation of highly specific cell-instructive surfaces to dissect the biological role of integrin subtypes and for application in tissue engineering and regenerative medicine.
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Affiliation(s)
- Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya (UPC), Diagonal 647, 08028, Barcelona, Spain.
| | - Roberta Fraioli
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya (UPC), Diagonal 647, 08028, Barcelona, Spain
| | - Florian Rechenmacher
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Stefanie Neubauer
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Tobias G Kapp
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Horst Kessler
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.
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57
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Mas-Moruno C, Fraioli R, Rechenmacher F, Neubauer S, Kapp TG, Kessler H. αvβ3- oder α5β1-Integrin-selektive Peptidmimetika für die Oberflächenbeschichtung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201509782] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering; Universitat Politècnica de Catalunya (UPC); Diagonal 647 08028 Barcelona Spanien
| | - Roberta Fraioli
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering; Universitat Politècnica de Catalunya (UPC); Diagonal 647 08028 Barcelona Spanien
| | - Florian Rechenmacher
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Stefanie Neubauer
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Tobias G. Kapp
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Horst Kessler
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
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58
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Luo K, Mei T, Li Z, Deng M, Zhang Z, Hou T, Dong S, Xie Z, Xu J, Luo F. A High-Adhesive Lysine-Cyclic RGD Peptide Designed for Selective Cell Retention Technology. Tissue Eng Part C Methods 2016; 22:585-95. [PMID: 27154386 DOI: 10.1089/ten.tec.2015.0517] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Affiliation(s)
- Keyu Luo
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Tieniu Mei
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Zhiqiang Li
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Moyuan Deng
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Zehua Zhang
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Tianyong Hou
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Shiwu Dong
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Department of Biomedical Materials Science, College of Biomedical Engineering, The Third Military Medical University, Chongqing, China
| | - Zhao Xie
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Jianzhong Xu
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Fei Luo
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
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59
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Pagel M, Hassert R, John T, Braun K, Wießler M, Abel B, Beck‐Sickinger AG. Multifunktionale Beschichtung verbessert Zelladhäsion auf Titan durch kooperativ wirkende Peptide. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511781] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Mareen Pagel
- Institut für Biochemie Universität Leipzig Brüderstraße 34 04103 Leipzig Deutschland
| | - Rayk Hassert
- Institut für Biochemie Universität Leipzig Brüderstraße 34 04103 Leipzig Deutschland
- Institut für Bioanalytische Chemie Universität Leipzig Deutscher Platz 5 04103 Leipzig Deutschland
| | - Torsten John
- Leibniz-Institut für Oberflächenmodifizierung (IOM) und Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie Universität Leipzig Permoserstraße 15 04318 Leipzig Deutschland
| | - Klaus Braun
- Deutsches Krebsforschungszentrum Abteilung Medizinische Physik in der Radiologie Im Neuenheimer Feld 280 69120 Heidelberg Deutschland
| | - Manfred Wießler
- Deutsches Krebsforschungszentrum Abteilung Medizinische Physik in der Radiologie Im Neuenheimer Feld 280 69120 Heidelberg Deutschland
| | - Bernd Abel
- Leibniz-Institut für Oberflächenmodifizierung (IOM) und Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie Universität Leipzig Permoserstraße 15 04318 Leipzig Deutschland
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60
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Pagel M, Hassert R, John T, Braun K, Wießler M, Abel B, Beck-Sickinger AG. Multifunctional Coating Improves Cell Adhesion on Titanium by using Cooperatively Acting Peptides. Angew Chem Int Ed Engl 2016; 55:4826-30. [PMID: 26938787 DOI: 10.1002/anie.201511781] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Indexed: 11/08/2022]
Abstract
Promotion of cell adhesion on biomaterials is crucial for the long-term success of a titanium implant. Herein a novel concept is highlighted combining very stable and affine titanium surface adhesive properties with specific cell binding moieties in one molecule. A peptide containing L-3,4-dihydroxyphenylalanine was synthesized and affinity to titanium was investigated. Modification with a cyclic RGD peptide and a heparin binding peptide (HBP) was realized by an efficient on-resin combination of Diels-Alder reaction with inverse electron demand and Cu(I) catalyzed azide-alkyne cycloaddition. The peptide was fluorescently labeled by thiol Michael addition. Conjugating the cyclic RGD and HBP in one peptide gave improved spreading, proliferation, viability, and the formation of well-developed actin cytoskeleton and focal contacts of osteoblast-like cells.
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Affiliation(s)
- Mareen Pagel
- Institut für Biochemie, Universität Leipzig, Brüderstrasse 34, 04103, Leipzig, Germany
| | - Rayk Hassert
- Institut für Biochemie, Universität Leipzig, Brüderstrasse 34, 04103, Leipzig, Germany.,Institut für Bioanalytische Chemie, Universität Leipzig, Deutscher Platz 5, 04103, Leipzig, Germany
| | - Torsten John
- Leibniz-Institut für Oberflächenmodifizierung (IOM), and Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Klaus Braun
- Deutsches Krebsforschungszentrum, Department Medizinische Physik in der Radiologie, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Manfred Wießler
- Deutsches Krebsforschungszentrum, Department Medizinische Physik in der Radiologie, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Bernd Abel
- Leibniz-Institut für Oberflächenmodifizierung (IOM), and Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Permoserstrasse 15, 04318, Leipzig, Germany
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61
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Kadem LF, Holz M, Suana KG, Li Q, Lamprecht C, Herges R, Selhuber-Unkel C. Rapid Reversible Photoswitching of Integrin-Mediated Adhesion at the Single-Cell Level. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:1799-1802. [PMID: 26685922 DOI: 10.1002/adma.201504394] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 11/02/2015] [Indexed: 06/05/2023]
Abstract
Rapid and reversible photoswitching of cell adhesion is achieved by c(RGDfK)-azobenzenes embedded in a poly(ethylene glycol) background on surfaces. The light-induced cis-trans-isomerization of the azobenzene enables switching of cell adhesion on the surface. Reversibility of switching over several consecutive switching cycles is demonstrated by single-cell force spectroscopy.
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Affiliation(s)
- Laith F Kadem
- Institute for Materials Science, University of Kiel, Kaiserstr. 2, 24143, Kiel, Germany
| | - Michelle Holz
- Otto-Diels-Institute of Organic Chemistry, University of Kiel, Otto-Hahn-Platz 4, 24098, Kiel, Germany
| | - Kristine Grace Suana
- Otto-Diels-Institute of Organic Chemistry, University of Kiel, Otto-Hahn-Platz 4, 24098, Kiel, Germany
| | - Qian Li
- Institute for Materials Science, University of Kiel, Kaiserstr. 2, 24143, Kiel, Germany
| | - Constanze Lamprecht
- Institute for Materials Science, University of Kiel, Kaiserstr. 2, 24143, Kiel, Germany
| | - Rainer Herges
- Otto-Diels-Institute of Organic Chemistry, University of Kiel, Otto-Hahn-Platz 4, 24098, Kiel, Germany
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62
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Pagel M, Meier R, Braun K, Wiessler M, Beck-Sickinger AG. On-resin Diels–Alder reaction with inverse electron demand: an efficient ligation method for complex peptides with a varying spacer to optimize cell adhesion. Org Biomol Chem 2016; 14:4809-16. [DOI: 10.1039/c6ob00314a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The DARinvon resin is a new orthogonal reaction in peptide synthesis and the benefits for cell adhesion are discussed.
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Affiliation(s)
- Mareen Pagel
- Institute of Biochemistry
- Faculty of Biosciences
- Pharmacy and Psychology
- Leipzig
- Germany
| | - René Meier
- Institute of Biochemistry
- Faculty of Biosciences
- Pharmacy and Psychology
- Leipzig
- Germany
| | - Klaus Braun
- Deutsches Krebsforschungszentrum
- 69120 Heidelberg
- Germany
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63
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Vida Y, Collado D, Najera F, Claros S, Becerra J, Andrades JA, Perez-Inestrosa E. Dendrimer surface orientation of the RGD peptide affects mesenchymal stem cell adhesion. RSC Adv 2016. [DOI: 10.1039/c6ra06177j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are promising candidates for a range of tissue regeneration applications.
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Affiliation(s)
- Y. Vida
- Universidad de Malaga
- IBIMA
- Department of Organic Chemistry
- 29071-Malaga
- Spain
| | - D. Collado
- Universidad de Malaga
- IBIMA
- Department of Organic Chemistry
- 29071-Malaga
- Spain
| | - F. Najera
- Universidad de Malaga
- IBIMA
- Department of Organic Chemistry
- 29071-Malaga
- Spain
| | - S. Claros
- Universidad de Malaga
- Cell Biology, Genetics and Physiology Department
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine-CIBER-BBN
- 29071-Malaga
- Spain
| | - J. Becerra
- Andalusian Centre for Nanomedicine and Biotechnology-BIONAND
- Parque Tecnologico de Andalucia
- 29590-Malaga
- Spain
- Universidad de Malaga
| | - J. A. Andrades
- Universidad de Malaga
- Cell Biology, Genetics and Physiology Department
- Networking Biomedical Research Center in Bioengineering, Biomaterials and Nanomedicine-CIBER-BBN
- 29071-Malaga
- Spain
| | - E. Perez-Inestrosa
- Universidad de Malaga
- IBIMA
- Department of Organic Chemistry
- 29071-Malaga
- Spain
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64
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Gilad Y, Noy E, Senderowitz H, Albeck A, Firer MA, Gellerman G. Synthesis, biological studies and molecular dynamics of new anticancer RGD-based peptide conjugates for targeted drug delivery. Bioorg Med Chem 2015; 24:294-303. [PMID: 26719208 DOI: 10.1016/j.bmc.2015.12.020] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 12/07/2015] [Accepted: 12/11/2015] [Indexed: 01/22/2023]
Abstract
New cyclic RGD peptide-anticancer agent conjugates, with different chemical functionalities attached to the parent peptide were synthesized in order to evaluate their biological activities and to provide a comparative study of their drug release profiles. The Integrin binding c(RGDfK) penta-peptide was used for the synthesis of Camptothecin (CPT) carbamate and Chlorambucil (CLB) amide conjugates. Substitution of the amino acid Lys with Ser resulted in a modified c(RGDfS) with a new attachment site, which enabled the synthesis of an ester CLB conjugate. Functional versatility of the conjugates was reflected in the variability of their drug release profiles, while the conserved RGD sequence of a selective binding to the αv integrin family, likely preserved their recognition by the Integrin and consequently their favorable toxicity towards targeted cancer cells. This hypothesis was supported by a computational analysis suggesting that all conjugates occupy conformational spaces similar to that of the Integrin bound bio-active parent peptide.
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Affiliation(s)
- Y Gilad
- Department of Biological Chemistry, Ariel University, Ariel 40700, Israel; The Julius Spokojny Bioorganic Chemistry Laboratory, Department of Chemistry, Bar Ilan University, Ramat Gan 52900, Israel
| | - E Noy
- Department of Chemistry, Bar Ilan University, Ramat Gan 52900, Israel
| | - H Senderowitz
- Department of Chemistry, Bar Ilan University, Ramat Gan 52900, Israel
| | - A Albeck
- The Julius Spokojny Bioorganic Chemistry Laboratory, Department of Chemistry, Bar Ilan University, Ramat Gan 52900, Israel
| | - M A Firer
- Department of Chemical Engineering, Ariel University, Ariel 40700, Israel
| | - G Gellerman
- Department of Biological Chemistry, Ariel University, Ariel 40700, Israel.
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65
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Herranz-Diez C, Li Q, Lamprecht C, Mas-Moruno C, Neubauer S, Kessler H, Manero J, Guillem-Martí J, Selhuber-Unkel C. Bioactive compounds immobilized on Ti and TiNbHf: AFM-based investigations of biofunctionalization efficiency and cell adhesion. Colloids Surf B Biointerfaces 2015; 136:704-11. [DOI: 10.1016/j.colsurfb.2015.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/20/2015] [Accepted: 10/06/2015] [Indexed: 10/22/2022]
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66
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A fibronectin mimetic motif improves integrin mediated cell biding to recombinant spider silk matrices. Biomaterials 2015; 74:256-66. [PMID: 26461118 DOI: 10.1016/j.biomaterials.2015.10.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 10/01/2015] [Accepted: 10/05/2015] [Indexed: 01/08/2023]
Abstract
The cell binding motif RGD is the most widely used peptide to improve cell binding properties of various biomaterials, including recombinant spider silk. In this paper we use genetic engineering to further enhance the cell supportive capacity of spider silk by presenting the RGD motif as a turn loop, similar to the one found in fibronectin (FN), but in the silk stabilized by cysteines, and therefore denoted FNCC. Human primary cells cultured on FNCC-silk showed increased attachment, spreading, stress fiber formation and focal adhesions, not only compared to RGD-silk, but also to silk fused with linear controls of the RGD containing motif from fibronectin. Cell binding to FNCC-silk was shown to involve the α5β1 integrin, and to support proliferation and migration of keratinocytes. The FNCC-silk protein allowed efficient assembly, and could even be transformed into free standing films, on which keratinocytes could readily form a monolayer culture. The results hold promise for future applications within tissue engineering.
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67
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Qin L, Dong H, Mu Z, Zhang Y, Dong G. Preparation and bioactive properties of chitosan and casein phosphopeptides composite coatings for orthopedic implants. Carbohydr Polym 2015; 133:236-44. [PMID: 26344277 DOI: 10.1016/j.carbpol.2015.06.099] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 06/20/2015] [Accepted: 06/25/2015] [Indexed: 12/30/2022]
Abstract
Using the layer-by-layer deposition method, functional chitosan/casein phospopeptides (CS/CPP) composite coatings were produced on Co-Cr-Mo alloy. The CS/CPP composite coatings had the dendritic topography, and were quite hydrophilic. Zeta potential measurements showed the composite coatings were negative charged at neural pH. XPS results indicated that the CS/CPP composite coatings were covalently bond to the substrate. When MC3T3-E1 cells were seeded on the CS/CPP composite coatings, no cytotoxicity was observed. The bone morphogenetic protein-2 (BMP-2) mRNA expression was significantly up-regulated in MC3T3-E1 cells cultured on the composite coatings and it was twice as much as that of cells cultured on the bare substrate. The expression of osteoprotegerin (OPG) mRNA and the ratio of OPG/receptor activator of nuclear factor-κB ligand (RNAKL) mRNA were increased 5-fold and 55-fold, respectively. These results suggested the CS/CPP composite coatings may have potential application in cobalt matrix orthopaedic implants.
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Affiliation(s)
- Liguo Qin
- Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Huanhuan Dong
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Ziqing Mu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Yali Zhang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China.
| | - Guangneng Dong
- Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an 710049, PR China.
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68
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Younesi M, Islam A, Kishore V, Panit S, Akkus O. Fabrication of compositionally and topographically complex robust tissue forms by 3D-electrochemical compaction of collagen. Biofabrication 2015; 7:035001. [PMID: 26069162 PMCID: PMC4489851 DOI: 10.1088/1758-5090/7/3/035001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Collagen solutions are phase-transformed to mechanically robust shell structures with curviplanar topographies using electrochemically-induced pH gradients. The process enables rapid layer-by-layer deposition of collagen-rich mixtures over the entire field simultaneously to obtain compositionally diverse multilayered structures. The in-plane tensile strength and modulus of the electrocompacted collagen sheet samples were 5200-fold and 2300-fold greater than those of the uncompacted collagen samples. Out-of-plane compression tests showed a 27-fold increase in compressive stress and a 46-fold increase in compressive modulus compared to uncompacted collagen sheets. Cells proliferated 4.9 times faster, and the cellular area spread was 2.7 times greater on compacted collagen sheets. Electrocompaction also resulted in a 2.9 times greater focal adhesion area than on regular collagen hydrogel. The reported improvements in the cell-matrix interactions with electrocompaction would serve to expedite the population of electrocompacted collagen scaffolds by cells. The capacity of the method to fabricate nonlinear curved topographies with compositional heterogeneous layers is demonstrated by sequential deposition of a collagen-hydroxyapatite layer over a collagen layer. The complex curved topography of the nasal structure is replicated by the electrochemical compaction method. The presented electrochemical compaction process is an enabling modality which holds significant promise for reconstruction of a wide spectrum of topographically complex systems such as joint surfaces, craniofacial defects, ears, nose, and urogenital forms.
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Affiliation(s)
- Mousa Younesi
- Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Anowarul Islam
- Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Vipuil Kishore
- Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
- Department of Chemical Engineering, Florida Institute of Technology, Melbourne, FL 32901, United States
| | - Stefi Panit
- Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Ozan Akkus
- Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
- Department of Orthopedics, Case Western Reserve University, Cleveland, OH 44106, United States
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69
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Advanced biopolymer-coated drug-releasing titania nanotubes (TNTs) implants with simultaneously enhanced osteoblast adhesion and antibacterial properties. Colloids Surf B Biointerfaces 2015; 130:255-63. [DOI: 10.1016/j.colsurfb.2015.04.021] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 03/25/2015] [Accepted: 04/08/2015] [Indexed: 12/21/2022]
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70
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Fraioli R, Rechenmacher F, Neubauer S, Manero JM, Gil J, Kessler H, Mas-Moruno C. Mimicking bone extracellular matrix: Integrin-binding peptidomimetics enhance osteoblast-like cells adhesion, proliferation, and differentiation on titanium. Colloids Surf B Biointerfaces 2015; 128:191-200. [DOI: 10.1016/j.colsurfb.2014.12.057] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/27/2014] [Accepted: 12/24/2014] [Indexed: 02/01/2023]
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71
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Jebors S, Pinese C, Nottelet B, Parra K, Amblard M, Mehdi A, Martinez J, Subra G. Turning peptides in comb silicone polymers. J Pept Sci 2015; 21:243-7. [PMID: 25688748 DOI: 10.1002/psc.2757] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 01/12/2015] [Indexed: 12/14/2022]
Abstract
We have recently reported on a new class of silicone-peptide' biopolymers obtained by polymerization of di-functionalized chlorodimethylsilyl hybrid peptides. Herein, we describe a related strategy based on dichloromethylsilane-derived peptides, which yield novel polymers with a polysiloxane backbone, comparable with a silicone-bearing pendent peptide chains. Interestingly, polymerization is chemoselective toward amino acids side-chains and proceeds in a single step in very mild conditions (neutral pH, water, and room temperature). As potential application, a cationic sequence was polymerized and used for antibacterial coating.
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Affiliation(s)
- Said Jebors
- Institut des Biomolécules Max Mousseron (IBMM), UMR5247 CNRS, ENSCM, Université de Montpellier, 15 avenue Charles Flahault, 34000, Montpellier, France; Institut Charles Gerhardt, UMR5253 CNRS, ENSCM, Université de Montpellier, Place Eugène Bataillon, 34095, Montpellier, France
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72
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Jing J, Fournier A, Szarpak-Jankowska A, Block MR, Auzély-Velty R. Type, density, and presentation of grafted adhesion peptides on polysaccharide-based hydrogels control preosteoblast behavior and differentiation. Biomacromolecules 2015; 16:715-22. [PMID: 25629300 DOI: 10.1021/bm501613u] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this work, cell-responsive polysaccharide hydrogels were prepared by a simple procedure based on the sequential bioconjugation and cross-linking of the polysaccharide backbone with bioactive peptides and poly(ethylene glycol)-bis(thiol) (PEG-(SH)2), respectively. Using thiol-ene reactions, we successfully functionalized hyaluronic acid (HA) and carboxymethylcellulose (CMC) with short and long peptides (5-mer and 15-mer derivatives, respectively) derived from adhesive proteins of bone extracellular matrix. The resulting HA-peptide and CMC-peptide conjugates with varying degrees of substitution were then carefully characterized by (1)H NMR spectroscopy to precisely control the peptide density into the hydrogels cross-linked with PEG-(SH)2. Preosteoblast seeded on the hydrogels with controlled identical stiffness spread in a manner that was strongly dependent on ligand density. Surprisingly, increasing the density of the adhesive peptide anchors did not result in a plateau of initial cell spreading but rather in a bell-shaped cell response that varies with the nature of both polysaccharide backbone and functional peptide. Placing the cells under optimal conditions for cell/hydrogel interaction, we showed that in HA hydrogels, the polysaccharide moiety is not solely a passive scaffold that presents the active peptides but is an active player in cell microenvironment to control and sustain cell activity.
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Affiliation(s)
- Jing Jing
- University Grenoble Alpes, CERMAV , 601 Rue de la Chimie, F-38000 Grenoble, France
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73
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Balaji A, Jaganathan SK, Vellayappan MV, John AA, Subramanian AP, SelvaKumar M, Mohandas H, M SR, Supriyanto E. Prospects of common biomolecules as coating substances for polymeric biomaterials. RSC Adv 2015. [DOI: 10.1039/c5ra12693b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The concept of using common biomolecules like proteins, carbohydrates,etc., for improving the biocompatibility seems rational and effective because of the bio-friendly surface that they present, remains closer in mimicking the innate environment.
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Affiliation(s)
- A. Balaji
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - S. K. Jaganathan
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - M. V. Vellayappan
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - A. A. John
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - A. P. Subramanian
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - M. SelvaKumar
- Rubber Technology Centre
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - H. Mohandas
- Department of Biomedical Engineering
- University of Texas Arlington
- USA-TX 76019
| | - Sundar Raj M
- Department of Biomedical Engineering
- Bharath University
- Chennai-600073
- India
| | - Eko Supriyanto
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
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74
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Heller M, Kämmerer PW, Al‐Nawas B, Luszpinski M, Förch R, Brieger J. The effect of extracellular matrix proteins on the cellular response of
HUVECS
and
HOBS
after covalent immobilization onto titanium. J Biomed Mater Res A 2014; 103:2035-44. [DOI: 10.1002/jbm.a.35340] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/17/2014] [Accepted: 09/19/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Heller
- Department of Otorhinolaryngolgy of the Johannes Gutenberg University Mainz55131Mainz Germany
- Department of Oral and Maxillofacial Surgery of the Johannes Gutenberg University Mainz55131Mainz Germany
- Max Planck Institute for Polymer Research55128Mainz Germany
| | - Peer W. Kämmerer
- Department of Oral and Maxillofacial SurgeryUniversity Medical Center Rostock18057Rostock Germany
| | - Bilal Al‐Nawas
- Department of Oral and Maxillofacial Surgery of the Johannes Gutenberg University Mainz55131Mainz Germany
| | - Marie‐Anne Luszpinski
- Department of Otorhinolaryngolgy of the Johannes Gutenberg University Mainz55131Mainz Germany
| | - Renate Förch
- Max Planck Institute for Polymer Research55128Mainz Germany
- Fraunhofer ICT‐IMM55129Mainz Germany
| | - Jürgen Brieger
- Department of Otorhinolaryngolgy of the Johannes Gutenberg University Mainz55131Mainz Germany
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75
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Li D, Sun H, Jiang L, Zhang K, Liu W, Zhu Y, Fangteng J, Shi C, Zhao L, Sun H, Yang B. Enhanced biocompatibility of PLGA nanofibers with gelatin/nano-hydroxyapatite bone biomimetics incorporation. ACS APPLIED MATERIALS & INTERFACES 2014; 6:9402-9410. [PMID: 24877641 DOI: 10.1021/am5017792] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The biocompatibility of biomaterials is essentially for its application. The aim of current study was to evaluate the biocompatibility of poly(lactic-co-glycolic acid) (PLGA)/gelatin/nanohydroxyapatite (n-HA) (PGH) nanofibers systemically to provide further rationales for the application of the composite electrospun fibers as a favorable platform for bone tissue engineering. The PGH composite scaffold with diameter ranging from nano- to micrometers was fabricated by using electrospinning technique. Subsequently, we utilized confocal laser scanning microscopy (CLSM) and MTT assay to evaluate its cyto-compatibility in vitro. Besides, real-time quantitative polymerase chain reaction (qPCR) analysis and alizarin red staining (ARS) were performed to assess the osteoinductive activity. To further test in vivo, we implanted either PLGA or PGH composite scaffold in a rat subcutaneous model. The results demonstrated that PGH scaffold could better support osteoblasts adhesion, spreading, and proliferation and show better cyto-compatibility than pure PLGA scaffold. Besides, qPCR analysis and ARS showed that PGH composite scaffold exhibited higher osteoinductive activity owing to higher phenotypic expression of typical osteogenic genes and calcium deposition. The histology evaluation indicated that the incorporation of Gelatin/nanohydroxyapatite (GH) biomimetics could significantly reduce local inflammation. Our data indicated that PGH composite electrospun nanofibers possessed excellent cyto-compatibility, good osteogenic activity, as well as good performance of host tissue response, which could be versatile biocompatible scaffolds for bone tissue engineering.
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Affiliation(s)
- Daowei Li
- Department of Pathology, School of Stomatology, Jilin University , Changchun 130021, China
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76
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Dang LTH, Feric NT, Laschinger C, Chang WY, Zhang B, Wood GA, Stanford WL, Radisic M. Inhibition of apoptosis in human induced pluripotent stem cells during expansion in a defined culture using angiopoietin-1 derived peptide QHREDGS. Biomaterials 2014; 35:7786-99. [PMID: 24930852 DOI: 10.1016/j.biomaterials.2014.05.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 05/08/2014] [Indexed: 02/07/2023]
Abstract
Adhesion molecule signaling is critical to human pluripotent stem cell (hPSC) survival, self-renewal, and differentiation. Thus, hPSCs are grown as clumps of cells on feeder cell layers or poorly defined extracellular matrices such as Matrigel. We sought to define a small molecule that would initiate adhesion-based signaling to serve as a basis for a defined substrate for hPSC culture. Soluble angiopoeitin-1 (Ang-1)-derived peptide QHREDGS added to defined serum-free media increased hPSC colony cell number and size during long- and short-term culture when grown on feeder cell layers or Matrigel, i.e. on standard substrates, without affecting hPSC morphology, growth rate or the ability to differentiate into multiple lineages both in vitro and in vivo. Importantly, QHREDGS treatment decreased hPSC apoptosis during routine passaging and single-cell dissociation. Mechanistically, the interaction of QHREDGS with β1-integrins increased expression of integrin-linked kinase (ILK), increased expression and activation of extracellular signal-regulated kinases 1/2 (ERK1/2), and decreased caspase-3/7 activity. QHREDGS immobilization to polyethylene glycol hydrogels significantly increased cell adhesion in a dose-dependent manner. We propose QHREDGS as a small molecule inhibitor of hPSC apoptosis and the basis of an affordable defined substrate for hPSC maintenance.
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Affiliation(s)
- Lan T H Dang
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; The Heart and Stroke/Richard Lewar Centre of Excellence, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Nicole T Feric
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Carol Laschinger
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Wing Y Chang
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Sprott Centre for Stem Cell Research, The Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, Canada; Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Boyang Zhang
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
| | - Geoffrey A Wood
- Department of Pathobiology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - William L Stanford
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Sprott Centre for Stem Cell Research, The Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, Canada; Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Milica Radisic
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; The Heart and Stroke/Richard Lewar Centre of Excellence, University of Toronto, Toronto, Ontario M5S 1A8, Canada; Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada.
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77
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Mas-Moruno C, Fraioli R, Albericio F, Manero JM, Gil FJ. Novel peptide-based platform for the dual presentation of biologically active peptide motifs on biomaterials. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6525-6536. [PMID: 24673628 DOI: 10.1021/am5001213] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Biofunctionalization of metallic materials with cell adhesive molecules derived from the extracellular matrix is a feasible approach to improve cell-material interactions and enhance the biointegration of implant materials (e.g., osseointegration of bone implants). However, classical biomimetic strategies may prove insufficient to elicit complex and multiple biological signals required in the processes of tissue regeneration. Thus, newer strategies are focusing on installing multifunctionality on biomaterials. In this work, we introduce a novel peptide-based divalent platform with the capacity to simultaneously present distinct bioactive peptide motifs in a chemically controlled fashion. As a proof of concept, the integrin-binding sequences RGD and PHSRN were selected and introduced in the platform. The biofunctionalization of titanium with this platform showed a positive trend towards increased numbers of cell attachment, and statistically higher values of spreading and proliferation of osteoblast-like cells compared to control noncoated samples. Moreover, it displayed statistically comparable or improved cell responses compared to samples coated with the single peptides or with an equimolar mixture of the two motifs. Osteoblast-like cells produced higher levels of alkaline phosphatase on surfaces functionalized with the platform than on control titanium; however, these values were not statistically significant. This study demonstrates that these peptidic structures are versatile tools to convey multiple biofunctionality to biomaterials in a chemically defined manner.
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Affiliation(s)
- Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC) , ETSEIB, Avenida Diagonal 647, 08028 Barcelona, Spain
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78
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Wang H, Lu T, Meng F, Zhu H, Liu X. Enhanced osteoblast responses to poly ether ether ketone surface modified by water plasma immersion ion implantation. Colloids Surf B Biointerfaces 2014; 117:89-97. [DOI: 10.1016/j.colsurfb.2014.02.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 01/25/2014] [Accepted: 02/08/2014] [Indexed: 10/25/2022]
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79
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Improving the cellular invasion into PHEMA sponges by incorporation of the RGD peptide ligand: The use of copolymerization as a means to functionalize PHEMA sponges. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4917-22. [DOI: 10.1016/j.msec.2013.08.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 07/22/2013] [Accepted: 08/09/2013] [Indexed: 12/16/2022]
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80
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Yao X, Peng R, Ding J. Cell-material interactions revealed via material techniques of surface patterning. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5257-5286. [PMID: 24038153 DOI: 10.1002/adma.201301762] [Citation(s) in RCA: 358] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/15/2013] [Indexed: 06/02/2023]
Abstract
Cell-material interactions constitute a key fundamental topic in biomaterials study. Various cell cues and matrix cues as well as soluble factors regulate cell behaviors on materials. These factors are coupled with each other as usual, and thus it is very difficult to unambiguously elucidate the role of each regulator. The recently developed material techniques of surface patterning afford unique ways to reveal the underlying science. This paper reviews the pertinent material techniques to fabricate patterns of microscale and nanoscale resolutions, and corresponding cell studies. Some issues are emphasized, such as cell localization on patterned surfaces of chemical contrast, and effects of cell shape, cell size, cell-cell contact, and seeding density on differentiation of stem cells. Material cues to regulate cell adhesion, cell differentiation and other cell events are further summed up. Effects of some physical properties, such as surface topography and matrix stiffness, on cell behaviors are also discussed; nanoscaled features of substrate surfaces to regulate cell fate are summarized as well. The pertinent work sheds new insight into the cell-material interactions, and is stimulating for biomaterial design in regenerative medicine, tissue engineering, and high-throughput detection, diagnosis, and drug screening.
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Affiliation(s)
- Xiang Yao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, 200433, Shanghai, China
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81
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Hassert R, Beck-Sickinger AG. Tuning peptide affinity for biofunctionalized surfaces. Eur J Pharm Biopharm 2013; 85:69-77. [DOI: 10.1016/j.ejpb.2013.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 02/05/2013] [Accepted: 02/12/2013] [Indexed: 01/16/2023]
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82
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Taubenberger AV, Hutmacher DW, Muller DJ. Single-cell force spectroscopy, an emerging tool to quantify cell adhesion to biomaterials. TISSUE ENGINEERING PART B-REVIEWS 2013; 20:40-55. [PMID: 23688177 DOI: 10.1089/ten.teb.2013.0125] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Cell adhesion receptors play a central role in sensing and integrating signals provided by the cellular environment. Thus, understanding adhesive interactions at the cell-biomaterial interface is essential to improve the design of implants that should emulate certain characteristics of the cell's natural environment. Numerous cell adhesion assays have been developed; among these, atomic force microscopy-based single-cell force spectroscopy (AFM-SCFS) provides a versatile tool to quantify cell adhesion at physiological conditions. Here we discuss how AFM-SCFS can be used to quantify the adhesion of living cells to biomaterials and give examples of using AFM-SCFS in tissue engineering and regenerative medicine. We anticipate that in the near future, AFM-SCFS will be established in the biomaterial field as an important technique to quantify cell-biomaterial interactions and thereby will contribute to the optimization of implants, scaffolds, and medical devices.
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Affiliation(s)
- Anna V Taubenberger
- 1 Biotechnological Center, Dresden University of Technology , Dresden, Germany
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83
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Rechenmacher F, Neubauer S, Mas-Moruno C, Dorfner PM, Polleux J, Guasch J, Conings B, Boyen HG, Bochen A, Sobahi TR, Burgkart R, Spatz JP, Fässler R, Kessler H. A Molecular Toolkit for the Functionalization of Titanium-Based Biomaterials That Selectively Control Integrin-Mediated Cell Adhesion. Chemistry 2013; 19:9218-23. [DOI: 10.1002/chem.201301478] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Indexed: 12/13/2022]
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84
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Hassert R, Hoffmeister PG, Pagel M, Hacker M, Schulz-Siegmund M, Beck-Sickinger AG. On-resin synthesis of an acylated and fluorescence-labeled cyclic integrin ligand for modification of poly(lactic-co-glycolic acid). Chem Biodivers 2013; 9:2648-58. [PMID: 23161641 DOI: 10.1002/cbdv.201200290] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Indexed: 11/09/2022]
Abstract
Cyclic Arg-Gly-Asp (RGD) peptides show remarkable affinity and specificity to integrin receptors and mediate important physiological effects in tumor angiogenesis. Additionally, they are one of the keyplayers in improving the biocompatibility of biomaterials. The fully biodegradable polymer poly(lactic-co-glycolic acid) (PLGA) is frequently used for biomedical implants and can be applied as nanoparticles for drug delivery. The aim of this work was the generation of a lipidated c[RGDfK] peptide including a second functionality for coating of hydrophobic PLGA. Therefore, we established a general and straightforward strategy for the introduction of two different modifications into the same c[RGDfK] peptide. This allowed the generation of a palmitoylated integrin-binding lipopeptide that shows high affinity to PLGA. Additionally, we coupled 5(6)-carboxyfluorescein to the second site for modification to enable sensitive quantification of the immobilized lipopeptide on PLGA. In conclusion, we present a synthesis protocol that enables the preparation of c[RGDfK] lipopeptides with a strong affinity to PLGA and an additional site for modifications. This will provide the opportunity to introduce a variety of effector molecules site-specifically to the c[RGDfK] lipopeptide, which will enable the introduction of multifunctionality into c[RGDfK]-coated PLGA devices or nanoparticles.
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Affiliation(s)
- Rayk Hassert
- Institute of Biochemistry, Faculty of Biosciences, Pharmacy and Psychology, Universität Leipzig, Brüderstrasse 34, D-04103 Leipzig, Germany
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85
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Wu TY, Zhou ZB, He ZW, Ren WP, Yu XW, Huang Y. Reinforcement of a new calcium phosphate cement with RGD-chitosan-fiber. J Biomed Mater Res A 2013; 102:68-75. [PMID: 23606446 DOI: 10.1002/jbm.a.34669] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Accepted: 02/15/2013] [Indexed: 11/06/2022]
Abstract
Calcium phosphate cement (CPC) has been widely used in orthopedic and dental applications. A critical limitation of CPC is low strength and high susceptibility to severe fracture. Surgeons can use it only to reconstruct non-stress bearing bone, raising the need for a tougher new generation of CPC. Fibers have been used as a reinforcement of CPC to improve the strength of a pure CPC scaffold. The RGD peptides (Arg-Gly-Asp) have been used to improve the biocompatibility of the scaffold, via physical adsorption. The purpose of this study was to develop a novel CPC scaffold reinforced by RGD peptide-bearing chitosan fibers (RGD-fiber-CPC). Our data showed that the RGD-fiber-CPC scaffold had an increased flexural strength, and stimulated new bone formation in an animal model. The RGD-fiber-CPC is a novel bone graft substitute in orthopedic surgery.
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Affiliation(s)
- Tian-Yi Wu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200011, China; Department of Orthopaedic Surgery, 2nd Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210011, China
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86
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Kaihara S, Sumimoto A, Fujimoto K. Photoreactive nanotool for cell aggregation and immobilization. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:714-25. [PMID: 23565911 DOI: 10.1080/09205063.2012.708188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
We developed a new method to prepare aggregates of specific cells and immobilize cells on a substrate with specific shapes by using a synthetic multifunctional tool, which consisted of a cell adhesive Arg-Gly-Asp (RGD) sequence, a photoreactive phenyl azido group and a biotin group. This chemical nanotool, RGD-2-(6-[biotinamido]-2-(p-azidobenzamido)-hexaneamido)ethyl-1,3'-dithio-proprionate (RGD-BED) was added to human umbilical vein endothelial cells to bind to receptors via the ligand-receptor interaction. Next a photoimmobilization of the binding RGD-BED was carried out by UV irradiation to covalently couple a phenyl azido moiety of RGD-BED with the neighboring site of the integrin receptor. We found that not only the migration distance of RGD-BED immobilized cells was diminished, but also the cell morphology was fixed on the substrate due to the blocking of integrin receptors by RGD-BED. In contrast, the addition of biocytin-containing polymers, poly(N-methacryloyloxy biocytin-co-dimethylacrylamide), and avidin to the RGD-BED-immobilized cells led to restore cellular migration behavior, probably arising from the increase in the rigidity of the environment surrounding the cells. Furthermore, by the addition of avidin to the RGD-BED-immobilized cells, three-dimensional cell aggregates were formed due to the cross-linking of the biotin moieties of RGD-BED. These results show that RGD-BED is a potential nanotool not only to label and collect targeted cells by the formation of cell aggregates but also to suppress mobility and morphologies of specific cells to be applicable for medical treatments.
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Affiliation(s)
- Sachiko Kaihara
- The Center for Chemical Biology, School of Fundamental Science and Technology, Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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87
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Implants in bone: part I. A current overview about tissue response, surface modifications and future perspectives. Oral Maxillofac Surg 2013; 18:243-57. [PMID: 23435578 DOI: 10.1007/s10006-013-0398-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 02/04/2013] [Indexed: 02/07/2023]
Abstract
PURPOSE The aim of study paper is to present an overview of osseointegration of dental implants, focusing on tissue response, surface modifications and future perspective. DISCUSSION Great progress has been made over the decades in the understanding of osseous peri-implant healing of dental implants, leading to the development of new implant materials and surfaces. However, failures and losses of implants are an indicator that there is room for improvement. Of particular importance is the understanding of the biological interaction between the implant and its surrounding bone. CONCLUSION The survival rates of dental implants in bone of over 90 % after 10 years show that they are an effective and well-established therapy option. However, new implant materials and surface modifications may be able to improve osseointegration of medical implants especially when the wound healing is compromised. Advanced techniques of evaluation are necessary to understand and validate osseointegration in these cases. An overview regarding the current state of the art in experimental evaluation of osseointegration of implants and implant material modifications will be given in Part II.
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88
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Inkjet-printed polyaniline patterns for exocytosed molecule detection from live cells. Talanta 2013; 105:333-9. [DOI: 10.1016/j.talanta.2012.10.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 10/13/2012] [Accepted: 10/15/2012] [Indexed: 12/23/2022]
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89
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Abstract
STUDY DESIGN Radiological and histological assessment of fusion status after anterior cervical discectomy and fusion (ACDF) procedure in a sheep spinal fusion model. OBJECTIVE To evaluate the efficacy of cyclic arginine-glycine-aspartic (cRGD) in comparison with recombinant human bone morphogenetic protein-2 (rhBMP-2) on a mineralized collagen matrix (MCM). SUMMARY OF BACKGROUND DATA A previous evaluation of MCM alone in comparison with autologous bone graft alone was not able to show an advantage on spinal fusion. The cRGD peptide sequence plays a major role in mediating cell adhesion. Studies have demonstrated enhances osteoblasts adhesion resulting in increased periimplant bone formation after implantcoating with cRGD. rhBMP-2 has already proven its ability to enhance spinal fusion. To date, no comparative in vivo evaluation of cRGD and rhBMP-2 in combination with a MCM for spinal fusion has been performed. METHODS Twenty-four sheep (N = 8/group) underwent C3-C4 fusion. Implants: group 1: titanium cage with MCM and rhBMP-2; group 2: titanium cage with MCM and cRGD; control group: titanium cage with MCM alone. After 12 weeks fusion sites were evaluated by computed tomography to assess fusion status, bone mineral density as well as bony callus volume. Furthermore, histomorphological and histomorphometrical analysis of the fusion sites were performed. RESULTS In comparison with the control group, cRGD, and rhBMP-2 groups showed a higher fusion rate in radiographical findings and a higher degree of interbody fusion in histomorphometrical analysis (P < 0.05). There was no significant difference in radiographical and histological parameters between the rhBMP-2 and the cRGD group. Although rhBMP-2 demonstrated ectopic prevertebral bone formations, this effect was less prominent in the cRGD group. CONCLUSION In this animal model the combination of cRGD and a mineralized collagen matrix showed superior fusion results in comparison with the mineralized collagen alone. Further, cRGD was comparably effective to rhBMP-2 in promoting interbody fusion by demonstrating less ectopic bone formations.
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90
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Rychly J. Biointerface Technology. Regen Med 2013. [DOI: 10.1007/978-94-007-5690-8_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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91
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Tran N, Hall D, Webster TJ. Mechanisms of enhanced osteoblast gene expression in the presence of hydroxyapatite coated iron oxide magnetic nanoparticles. NANOTECHNOLOGY 2012; 23:455104. [PMID: 23064042 DOI: 10.1088/0957-4484/23/45/455104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Hydroxyapatite (HA) coated iron oxide (Fe(3)O(4)) magnetic nanoparticles have been shown to enhance osteoblast (bone forming cells) proliferation and osteoblast differentiation into calcium depositing cells (through increased secretion of alkaline phosphatase, collagen and calcium deposition) compared to control samples without nanoparticles. Such nanoparticles are, thus, very promising for numerous orthopedic applications including magnetically directed osteoporosis treatment. The objective of the current study was to elucidate the mechanisms of the aforementioned improved osteoblast responses in the presence of HA coated Fe(3)O(4) nanoparticles. Results demonstrated large amounts of fibronectin (a protein known to increase osteoblast functions) adsorption on HA coated Fe(3)O(4) nanoparticles. Specifically, fibronectin adsorption almost doubled when HA coated Fe(3)O(4) nanoparticle concentrations increased from 12.5 to 100 μg ml(-1), and from 12.5 to 200 μg ml(-1), a four fold increase was observed. Results also showed greater osteoblast gene regulation (specifically, osteocalcin, type I collagen and cbfa-1) in the presence of HA coated Fe(3)O(4) nanoparticles. Collectively, these results provide a mechanism for the observed enhanced osteoblast functions in the presence of HA coated iron oxide nanoparticles, allowing their further investigation for a number of orthopedic applications.
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Affiliation(s)
- Nhiem Tran
- Department of Physics, Brown University, Providence, RI 02912, USA
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92
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Riches AG, Cablewski T, Glattauer V, Thissen H, Meagher L. Scalable synthesis of an integrin-binding peptide mimetic for biomedical applications. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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93
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Liu Q, Limthongkul W, Sidhu G, Zhang J, Vaccaro A, Shenck R, Hickok N, Shapiro I, Freeman T. Covalent attachment of P15 peptide to titanium surfaces enhances cell attachment, spreading, and osteogenic gene expression. J Orthop Res 2012; 30:1626-33. [PMID: 22504956 DOI: 10.1002/jor.22116] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 03/15/2012] [Indexed: 02/04/2023]
Abstract
P15, a synthetic 15 amino acid peptide, mimics the cell-binding domain within the alpha-1 chain of human collagen is being tested in clinical trials to determine if it enhances bone formation in spinal fusions. We hypothesize that covalent attachment of P15 to titanium implants may also serve to promote osseointegration. To test this hypothesis, we measured osteoblast and mesenchymal cell adhesion, proliferation, and maturation on P15 tethered to a titanium (Ti-P15) surface. P15 peptide was covalently bonded to titanium alloy surfaces and incubated with osteoblast like cells. Cell toxicity, adhesion, spreading, and differentiation was then evaluated. Real-time quantitative PCR, Western blot analysis, and fluorescent immunohistochemistry was performed to measure osteoblast gene expression and differentiation. There was no evidence of toxicity. Significant increases in early cell attachment, spreading, and proliferation were observed on the Ti-P15 surface. Increased filapodial attachments, α(2) integrin expression, and phosphorylated focal adhesion kinase immunostaining indicated activation of integrin signaling pathways. qRT-PCR analysis indicated there was significant increase in osteogenic differentiation markers in cells grown on Ti-P15 compared to control-Ti. Western blotting confirmed these findings. Surface modification of titanium with P15 significantly increased cell attachment, spreading, osteogenic gene expression, and differentiation. Results of this study suggest that Ti-P15 has the potential to safely enhance bone formation and promote osseointegration of titanium implants.
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Affiliation(s)
- Qinyi Liu
- Department of Orthopedics, The Second Hospital of Jilin University, Chang Chun, Jilin, China
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94
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Wohlrab S, Müller S, Schmidt A, Neubauer S, Kessler H, Leal-Egaña A, Scheibel T. Cell adhesion and proliferation on RGD-modified recombinant spider silk proteins. Biomaterials 2012; 33:6650-9. [DOI: 10.1016/j.biomaterials.2012.05.069] [Citation(s) in RCA: 142] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 05/30/2012] [Indexed: 10/28/2022]
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95
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Hassert R, Pagel M, Ming Z, Häupl T, Abel B, Braun K, Wiessler M, Beck-Sickinger AG. Biocompatible silicon surfaces through orthogonal click chemistries and a high affinity silicon oxide binding peptide. Bioconjug Chem 2012; 23:2129-37. [PMID: 22989005 DOI: 10.1021/bc3003875] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Multifunctionality is gaining more and more importance in the field of improved biomaterials. Especially peptides feature a broad chemical variability and are versatile mediators between inorganic surfaces and living cells. Here, we synthesized a unique peptide that binds to SiO(2) with nM affinity. We equipped the peptide with the bioactive integrin binding c[RGDfK]-ligand and a fluorescent probe by stepwise Diels-Alder reaction with inverse electron demand and copper(I) catalyzed azide-alkyne cycloaddition. For the first time, we report the generation of a multifunctional peptide by combining these innovative coupling reactions. The resulting peptide displayed an outstanding binding to silicon oxide and induced a significant increase in cell spreading and cell viability of osteoblasts on the oxidized silicon surface.
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Affiliation(s)
- Rayk Hassert
- Institut für Biochemie, Faculty of Biosciences, Pharmacy and Psychology, Universität Leipzig, Brüderstrasse 34, 04103 Leipzig, Germany
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Park SY, Kim HS, Kim JH, Shim JH, Yun MJ, Jeon YC, Huh JB, Jeong CM. Effects of anodized titanium implant coated with RGD peptides via chemical fixation on osseointegration and bone regeneration. Tissue Eng Regen Med 2012. [DOI: 10.1007/s13770-012-0340-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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97
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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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98
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Mas-Moruno C, Dorfner PM, Manzenrieder F, Neubauer S, Reuning U, Burgkart R, Kessler H. Behavior of primary human osteoblasts on trimmed and sandblasted Ti6Al4V surfaces functionalized with integrin αvβ3-selective cyclic RGD peptides. J Biomed Mater Res A 2012; 101:87-97. [DOI: 10.1002/jbm.a.34303] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 05/10/2012] [Accepted: 05/25/2012] [Indexed: 02/05/2023]
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99
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Enhancement of bone regeneration through facile surface functionalization of solid freeform fabrication-based three-dimensional scaffolds using mussel adhesive proteins. Acta Biomater 2012; 8:2578-86. [PMID: 22480947 DOI: 10.1016/j.actbio.2012.03.041] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 03/03/2012] [Accepted: 03/27/2012] [Indexed: 01/14/2023]
Abstract
Solid freeform fabrication (SFF) is recognized as a promising tool for creating tissue engineering scaffolds due to advantages such as superior interconnectivity and highly porous structure. Despite structural support for SFF-based three-dimensional (3-D) scaffolds that can lead to tissue regeneration, lack of cell recognition motifs and/or biochemical factors has been considered a limitation. Previously, recombinant mussel adhesive proteins (MAPs) were successfully demonstrated to be functional cell adhesion materials on various surfaces due to their peculiar adhesive properties. Herein, MAPs were applied as surface functionalization materials to SFF-based 3-D polycaprolactone/poly(lactic-co-glycolic acid) scaffolds. We successfully coated MAPs onto scaffold surfaces by simply dipping the scaffolds into the MAP solution, which was confirmed through X-ray photoelectron spectroscopy and scanning electron microscopy analyses. Through in vitro study using human adipose tissue-derived stem cells (hADSCs), significant enhancement of cellular activities such as attachment, proliferation, and osteogenic differentiation was observed on MAP-coated 3-D scaffolds, especially on which fused arginine-glycine-aspartic acid peptides were efficiently exposed. In addition, we found that in vivo hADSC implantation with MAP-coated scaffolds enhanced bone regeneration in a rat calvarial defect model. These results collectively demonstrate that facile surface functionalization of 3-D scaffolds using MAP would be a promising strategy for successful tissue engineering applications.
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Zhang Z, Ni J, Chen L, Yu L, Xu J, Ding J. Encapsulation of cell-adhesive RGD peptides into a polymeric physical hydrogel to prevent postoperative tissue adhesion. J Biomed Mater Res B Appl Biomater 2012; 100:1599-609. [DOI: 10.1002/jbm.b.32728] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 03/06/2012] [Accepted: 04/04/2012] [Indexed: 01/22/2023]
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