51
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Joddar B, Ito Y. Biological modifications of materials surfaces with proteins for regenerative medicine. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10984g] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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52
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53
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Liberelle B, Boucher C, Chen J, Jolicoeur M, Durocher Y, De Crescenzo G. Impact of Epidermal Growth Factor Tethering Strategy on Cellular Response. Bioconjug Chem 2010; 21:2257-66. [DOI: 10.1021/bc1002604] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Benoît Liberelle
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales, Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
| | - Cyril Boucher
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales, Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
| | - Jingkui Chen
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales, Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
| | - Mario Jolicoeur
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales, Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
| | - Yves Durocher
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales, Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
| | - Gregory De Crescenzo
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales, Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
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Gonçalves R, Martins MCL, Oliveira MJ, Almeida-Porada G, Barbosa MA. Bioactivity of immobilized EGF on self-assembled monolayers: optimization of the immobilization process. J Biomed Mater Res A 2010; 94:576-85. [PMID: 20198690 DOI: 10.1002/jbm.a.32723] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Last trends in Biomaterials focus the mimic of cellular environments capable to control cellular responses. Epidermal growth factor (EGF) is a pleiotropic cytokine known to regulate cell proliferation, differentiation, and death. This study aims to optimize the immobilization of EGF on 11-mercapto-1-undecyl-tetra(ethylene)glycol (EG4)-self-assembled monolayers (SAMs) and to establish a new model surface to study EGF-mediated signaling. Gold substrates were modified with a monolayer of EG4 and N,N'-carbonyldiimidazole (CDI) was used to activate hydroxyl terminated groups of EG4-SAMs. EGF was then immobilized on activated EG4-SAMs at pH 7.4, 4 degrees C, and 100 rpm. Different immobilization reaction times were tested as well as different CDI concentrations to optimize the reaction conditions and obtain a range of immobilized EGF concentrations on the surfaces. Surface characterization of EGF-SAMs was performed using radiolabeling, water contact angle measurements, X-ray photoelectron spectroscopy, and ELISA. Phosphorylation of EGFR on BT-20 breast cancer cell line by EGF-SAMs was tested by immunostaining. EGF was successfully immobilized on EG4-SAMs, at 4 degrees C and pH 7.4 in a range of concentrations from 3.6 +/- 0.8 to 17.6 +/- 1.5 ng/cm(2). The concentration of EGF increases with immobilization time and with the CDI concentration reaching the maximum for surfaces activated with 30 mg/mL of CDI after 48 h. The bioactivity of EGF-SAMs was confirmed by immunostaining of phospho-EGFR of BT-20 cells. This study described EGF immobilization on EG4-SAMs at different concentrations, which could be important surface models to study specific protein interactions at the molecular level evolving EGF-family of proteins.
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Affiliation(s)
- Raquel Gonçalves
- INEB, Biomaterials Division, NEWTherapies Group, R. Campo Alegre, 823, Porto 4150-180, Portugal.
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Nijhuis AWG, Leeuwenburgh SCG, Jansen JA. Wet-Chemical Deposition of Functional Coatings for Bone Implantology. Macromol Biosci 2010; 10:1316-29. [DOI: 10.1002/mabi.201000142] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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56
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Yue XS, Murakami Y, Tamai T, Nagaoka M, Cho CS, Ito Y, Akaike T. A fusion protein N-cadherin-Fc as an artificial extracellular matrix surface for maintenance of stem cell features. Biomaterials 2010; 31:5287-96. [DOI: 10.1016/j.biomaterials.2010.03.035] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Accepted: 03/15/2010] [Indexed: 11/29/2022]
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57
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Robertus J, Browne WR, Feringa BL. Dynamic control over cell adhesive properties using molecular-based surface engineering strategies. Chem Soc Rev 2010; 39:354-78. [DOI: 10.1039/b906608j] [Citation(s) in RCA: 194] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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58
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Doran MR, Markway BD, Croll TI, Sara S, Munro TP, Cooper-White JJ. Controlled presentation of recombinant proteins via a zinc-binding peptide-linker in two and three dimensional formats. Biomaterials 2009; 30:6614-20. [DOI: 10.1016/j.biomaterials.2009.08.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Accepted: 08/27/2009] [Indexed: 10/20/2022]
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59
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An antibody surface for selective neuronal cell attachment. J Neurosci Methods 2009; 186:72-6. [PMID: 19903492 DOI: 10.1016/j.jneumeth.2009.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 10/28/2009] [Accepted: 11/04/2009] [Indexed: 11/24/2022]
Abstract
An optimal surface for culturing human embryonic stem cell (hESC)-derived neuronal cells is of high interest. In this study, a specific antibody to a neural cell adhesion molecule (NCAM) was immobilised on a solid surface of polystyrene and used as a selective matrix for culturing of hESC-derived neuronal cells. Thereafter, hESC-derived neurospheres were seeded on the matrix. The neurospheres did not attach to the NCAM antibody containing matrix whereas individual neuronal cells did. The neuronal cell attachment was depended on the NCAM antibody concentration. The neuronal cells were viable on the NCAM antibody containing matrix during an 8 day follow-up and exhibited typical bipolar morphology of immature neurons. Specific binding of the NCAM antigen to an immunoglobulin-polymer coated surface was verified by surface plasmon resonance (SPR) measurements. This study is to our knowledge the first demonstrating the use of an antibody layer as a selective surface for hESC-derived neuronal cells.
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60
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Nakaji-Hirabayashi T, Kato K, Iwata H. Hyaluronic acid hydrogel loaded with genetically-engineered brain-derived neurotrophic factor as a neural cell carrier. Biomaterials 2009; 30:4581-9. [DOI: 10.1016/j.biomaterials.2009.05.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2009] [Accepted: 05/10/2009] [Indexed: 10/20/2022]
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61
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Rational design and protein engineering of growth factors for regenerative medicine and tissue engineering. Biochem Soc Trans 2009; 37:717-21. [DOI: 10.1042/bst0370717] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Growth factors provide key instructive cues for tissue formation and repair. However, many natural growth factors are limited in their usefulness for tissue engineering and regenerative applications by their poor retention at desired sites of action, short half-lives in vivo, pleiotropic actions and other features. In the present article, we review approaches to rational design of synthetic growth factors based on mechanisms of receptor activation. Such synthetic molecules can function as simplified ligands with potentially tunable specificity and action. Rational and combinatorial protein engineering techniques allow introduction of additional features into these synthetic growth molecules, as well as natural growth factors, which significantly enhance their therapeutic utility.
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62
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Boucher C, Liberelle B, Jolicoeur M, Durocher Y, De Crescenzo G. Epidermal Growth Factor Tethered through Coiled-Coil Interactions Induces Cell Surface Receptor Phosphorylation. Bioconjug Chem 2009; 20:1569-77. [DOI: 10.1021/bc9001147] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cyril Boucher
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologie Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
| | - Benoît Liberelle
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologie Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
| | - Mario Jolicoeur
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologie Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
| | - Yves Durocher
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologie Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
| | - Gregory De Crescenzo
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologie Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succ. Centre-Ville, Montréal (Qc), Canada H3C 3A7, and Animal Cell Technology Group, Bioprocess Sector, Biotechnology Research Institute, National Research Council Canada, Montréal (Qc), Canada H4P 2R2
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63
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Hiraoka M, Kato K, Nakaji-Hirabayashi T, Iwata H. Enhanced Survival of Neural Cells Embedded in Hydrogels Composed of Collagen and Laminin-Derived Cell Adhesive Peptide. Bioconjug Chem 2009; 20:976-83. [DOI: 10.1021/bc9000068] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Makiko Hiraoka
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Koichi Kato
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Tadashi Nakaji-Hirabayashi
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Hiroo Iwata
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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64
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Novak MT, Bryers JD, Reichert WM. Biomimetic strategies based on viruses and bacteria for the development of immune evasive biomaterials. Biomaterials 2009; 30:1989-2005. [PMID: 19185345 PMCID: PMC2673477 DOI: 10.1016/j.biomaterials.2008.11.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Accepted: 11/26/2008] [Indexed: 12/30/2022]
Abstract
The field of biomaterials has begun to focus upon materials strategies for modulating the immune response. While certain approaches appear promising, they are currently limited to isolated facets of inflammation process. It is well documented that both bacteria and viruses have highly developed methods for evading the immune system, providing inspiration for a more biomimetic approach to materials design. This review presents the immune evasive tactics employed by viruses and bacteria, and offers suggestions for future directions that apply these principles to design of immune evasive biomaterials.
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Affiliation(s)
- Matthew T. Novak
- Department of Biomedical Engineering, Duke University, 136 Hudson Hall, Box 90281, Durham, NC, 27708
| | - James D. Bryers
- Department of Bioengineering, University of Washington, PO Box 355061, 1705 NE Pacific Street, Seattle, WA, 98195
| | - William M. Reichert
- Department of Biomedical Engineering, Duke University, 136 Hudson Hall, Box 90281, Durham, NC, 27708
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65
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Le PU, Lenferink AE, Pinard M, Baardsnes J, Massie B, O’Connor-McCourt MD. Escherichia coli expression and refolding of E/K-coil-tagged EGF generates fully bioactive EGF for diverse applications. Protein Expr Purif 2009; 64:108-17. [DOI: 10.1016/j.pep.2008.11.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2008] [Revised: 11/03/2008] [Accepted: 11/10/2008] [Indexed: 11/26/2022]
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66
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Nakaji-Hirabayashi T, Kato K, Iwata H. Surface-Anchoring of Spontaneously Dimerized Epidermal Growth Factor for Highly Selective Expansion of Neural Stem Cells. Bioconjug Chem 2008; 20:102-10. [DOI: 10.1021/bc800331t] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Tadashi Nakaji-Hirabayashi
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Koichi Kato
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Hiroo Iwata
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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67
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Nakaji-Hirabayashi T, Kato K, Iwata H. Essential role of structural integrity and firm attachment of surface-anchored epidermal growth factor in adherent culture of neural stem cells. Biomaterials 2008; 29:4403-8. [DOI: 10.1016/j.biomaterials.2008.07.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2008] [Accepted: 07/31/2008] [Indexed: 11/28/2022]
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68
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Sekula S, Fuchs J, Weg-Remers S, Nagel P, Schuppler S, Fragala J, Theilacker N, Franzreb M, Wingren C, Ellmark P, Borrebaeck CAK, Mirkin CA, Fuchs H, Lenhert S. Multiplexed lipid dip-pen nanolithography on subcellular scales for the templating of functional proteins and cell culture. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:1785-93. [PMID: 18814174 DOI: 10.1002/smll.200800949] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Molecular patterning processes taking place in biological systems are challenging to study in vivo because of their dynamic behavior, subcellular size, and high degree of complexity. In vitro patterning of biomolecules using nanolithography allows simplification of the processes and detailed study of the dynamic interactions. Parallel dip-pen nanolithography (DPN) is uniquely capable of integrating functional biomolecules on subcellular length scales due to its constructive nature, high resolution, and high throughput. Phospholipids are particularly well suited as inks for DPN since a variety of different functional lipids can be readily patterned in parallel. Here DPN is used to spatially pattern multicomponent micro- and nanostructured supported lipid membranes and multilayers that are fluid and contain various amounts of biotin and/or nitrilotriacetic acid functional groups. The patterns are characterized by fluorescence microscopy and photoemission electron microscopy. Selective adsorption of functionalized or recombinant proteins based on streptavidin or histidine-tag coupling enables the semisynthetic fabrication of model peripheral membrane bound proteins. The biomimetic membrane patterns formed in this way are then used as substrates for cell culture, as demonstrated by the selective adhesion and activation of T-cells.
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Affiliation(s)
- Sylwia Sekula
- Institut für NanoTechnologie, Forschungszentrum Karlsruhe GmbH ,76021 Karlsruhe, Germany
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69
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Aizawa Y, Leipzig N, Zahir T, Shoichet M. The effect of immobilized platelet derived growth factor AA on neural stem/progenitor cell differentiation on cell-adhesive hydrogels. Biomaterials 2008; 29:4676-83. [PMID: 18801569 DOI: 10.1016/j.biomaterials.2008.08.018] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2008] [Accepted: 08/22/2008] [Indexed: 02/07/2023]
Abstract
Neural stem/progenitor cells (NSPCs) hold great promise in regenerative medicine; however, controlling their differentiation to a desired phenotype within a defined matrix is challenging. To guide the differentiation of NSPCs, we first created a cell-adhesive matrix of agarose modified with glycine-arginine-glycine-aspartic acid-serine (GRGDS) and then demonstrated the multipotentiality of NSPCs to differentiate to the three primary cell types of the central nervous system on this matrix: neurons, oligodendrocytes and astrocytes. We then examined whether immobilized platelet derived growth factor AA (PDGF-AA) would promote differentiation similarly to the same soluble factor and found similar percentages of NSPCs differentiated to oligodendrocytes as determined by immunohistochemistry (IHC) and quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Interestingly, the gene expression of the differentiated oligodendrocytes was similar for 2', 3'-cyclic nucleotide 3'-phosphodiesterase (CNPase) but different for myelin oligodendrocyte glycoprotein (MOG) in the presence of soluble PDGF-AA vs. immobilized PDGF-AA. These results demonstrate for the first time, that it is possible to control the differentiation of NSPCs, and specifically to oligodendrocytes, in cell-adhesive matrices with immobilized PDGF-AA.
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Affiliation(s)
- Yukie Aizawa
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Canada
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70
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Little L, Healy KE, Schaffer D. Engineering biomaterials for synthetic neural stem cell microenvironments. Chem Rev 2008; 108:1787-96. [PMID: 18476674 DOI: 10.1021/cr078228t] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Lauren Little
- Department of Chemical Engineering, University of California, Berkeley, California 94720-1760, USA
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71
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Sharon J, Puleo D. The use of N-terminal immobilization of PTH(1-34) on PLGA to enhance bioactivity. Biomaterials 2008; 29:3137-42. [PMID: 18448162 PMCID: PMC2692684 DOI: 10.1016/j.biomaterials.2008.04.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2008] [Accepted: 04/09/2008] [Indexed: 12/27/2022]
Abstract
The objective of this work was to control the orientation of bioactive molecules immobilized on a biodegradable substrate to improve their accessibility for binding to cell surface receptors and, therefore, to increase bioactivity. The osteotropic peptide, parathyroid hormone (1-34) (PTH(1-34)), was used to demonstrate the approach. To this end, the intrinsic N-terminal serine residue was oxidized to create an aldehyde group that specifically bound to hydrazide-derivatized poly(lactide-co-glycolide) under neutral conditions to form a hydrazone bond. Use of dihydrazide spacers significantly increased the amount of peptide immobilized compared to simple adsorption or direct, random attachment. In probing accessibility of immobilized PTH(1-34), attachment using longer dihydrazide spacers enhanced binding of an antibody against an epitope in the N-terminal region of the peptide. The longest spacer also increased binding of a C-terminal antibody. Furthermore, substrates with peptide tethered via spacers stimulated intracellular synthesis of cAMP, with activity increasing with dihydrazide length. PTH(1-34) immobilized using the longest spacer was significantly more effective than both random binding and adsorption. Site-directed binding of bioactive peptides to surfaces presents biomolecules for binding with cells so as to enhance interaction with receptors, and therefore the approach may be useful for obtaining preferred localized tissue responses.
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Affiliation(s)
- J.L. Sharon
- Center for Biomedical Engineering, University of Kentucky, Lexington, KY, USA
| | - D.A. Puleo
- Center for Biomedical Engineering, University of Kentucky, Lexington, KY, USA
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72
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Miyazaki H, Kato K, Teramura Y, Iwata H. A Collagen-Binding Mimetic of Neural Cell Adhesion Molecule. Bioconjug Chem 2008; 19:1119-23. [DOI: 10.1021/bc700470v] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Hiroko Miyazaki
- Department of Reparative Materials, Institute for Frontier Medical Sciences and Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Koichi Kato
- Department of Reparative Materials, Institute for Frontier Medical Sciences and Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Yuji Teramura
- Department of Reparative Materials, Institute for Frontier Medical Sciences and Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Hiroo Iwata
- Department of Reparative Materials, Institute for Frontier Medical Sciences and Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
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73
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Nakaji-Hirabayashi T, Kato K, Iwata H. Self-Assembling Chimeric Protein for the Construction of Biodegradable Hydrogels Capable of Interaction with Integrins Expressed on Neural Stem/Progenitor Cells. Biomacromolecules 2008; 9:1411-6. [DOI: 10.1021/bm701423d] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Tadashi Nakaji-Hirabayashi
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Koichi Kato
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Hiroo Iwata
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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74
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Riley J, Sweeney W, Boulis N. Shifting the balance: cell-based therapeutics as modifiers of the amyotrophic lateral sclerosis–specific neuronal microenvironment. Neurosurg Focus 2008; 24:E10. [DOI: 10.3171/foc/2008/24/3-4/e9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
✓ Recent advances in the laboratory have improved the current understanding of neurobiological mechanisms underlying the initiating events and pathological progression observed in amyotrophic lateral sclerosis (ALS). Whereas initial studies have revealed the late-stage intracellular cascades contributing to neuronal dysfunction and cell death, more recently collected data have begun to elucidate the presence and importance of a “non–cell autonomous” component indicating that affected glial cell subtypes may serve distinct and required roles. Pharmacological interventions for ALS have largely been disappointing likely in part because they have failed to address either the proximate events contributing to neuronal dysfunction and death or the deleterious contributions of non-neuronal cells within the local microenvironment. Alternatively, cell-based therapeutics offer the potential of a multifaceted approach oriented toward the dual ends of protecting remaining viable neurons and attempting to restore neuronal function lost as a manifestation of disease progression. The authors review the evolving knowledge of disease initiation and progression, with specific emphasis on the role of affected glia as crucial contributors to the observed ALS phenotype. This basis is used to underscore the potential roles of cell-based therapeutics as modifiers of the ALS-specific microenvironment.
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Affiliation(s)
- Jonathan Riley
- 1Cleveland Clinic Foundation, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
| | - Walter Sweeney
- 1Cleveland Clinic Foundation, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio
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75
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Nakaji-Hirabayashi T, Kato K, Arima Y, Iwata H. Multifunctional chimeric proteins for the sequential regulation of neural stem cell differentiation. Bioconjug Chem 2008; 19:516-24. [PMID: 18186599 DOI: 10.1021/bc700355t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Controlling the dynamics of growth factor signaling is a challenge in regenerative medicine for various tissues including the central nervous system. Here, we report on the development of the biomolecular system that facilitates sequential regulation of growth factor signals acting on neural stem/progenitor cells. Recombinant technology was employed to synthesize the multifunctional chimeric protein that contained multiple domains, including epidermal growth factor (EGF), ciliary neurotrophic factor (CNTF), globular capping domain, thrombin-cleavable sequence, and substrate-binding domain with affinity for Ni(II) ions. The chimeric protein is expected to expose CNTF upon elimination of the capping domain by digestion with endogenous thrombin in vivo. When the multifunctional chimeric protein was immobilized onto a substrate through the coordination of the substrate-binding domain with surface-immobilized Ni(II) ions, the substrate served to proliferate neural stem cells, maintaining the population of undifferentiated cells at 85%. This effect is primarily due to the activity of EGF, while CNTF activity is temporally veiled with the capping domain. Upon digesting the thrombin-cleavable sequence to remove the capping domain, the activity of CNTF emerged to induce differentiation of astrocytes in situ from the proliferated neural stem cells. The fraction of differentiated astrocytes reached 68% of total cells. These results demonstrate the feasibility of the system for controlling the dynamics of growth factor signals.
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Affiliation(s)
- Tadashi Nakaji-Hirabayashi
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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Ami D, Neri T, Natalello A, Mereghetti P, Doglia SM, Zanoni M, Zuccotti M, Garagna S, Redi CA. Embryonic stem cell differentiation studied by FT-IR spectroscopy. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2008; 1783:98-106. [DOI: 10.1016/j.bbamcr.2007.08.003] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Revised: 08/01/2007] [Accepted: 08/02/2007] [Indexed: 11/28/2022]
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Ito Y. Covalently immobilized biosignal molecule materials for tissue engineering. SOFT MATTER 2007; 4:46-56. [PMID: 32907083 DOI: 10.1039/b708359a] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Immobilization of biosignal molecules including growth factors and cytokines is important for developing biologically active materials which can contribute to tissue engineering as a component. The immobilization has more meanings than only immobilization of the enzyme in a bioreactor or ligand-receptor interactions, because the immobilized biosignal molecules work on cells which have very complex structures and functions. This review discusses recent progress in immobilization of biosignal molecules, including the mechanisms and design concepts.
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Affiliation(s)
- Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako-shi, Saitama 351-0198, JAPAN
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Kato K, Sato H, Iwata H. Ultrastructural Study on the Specific Binding of Genetically Engineered Epidermal Growth Factor to Type I Collagen Fibrils. Bioconjug Chem 2007; 18:2137-43. [PMID: 17894450 DOI: 10.1021/bc700259g] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In an attempt to develop collagen-growth factor composites for use in tissue engineering, chimeric proteins consisting of epidermal growth factor and collagen binding domains derived from von Willebrand factor or fibronectin were synthesized by means of recombinant technology. These chimeric proteins were bound to type I collagen fibrils, and the ultrastructures of composites were analyzed by transmission electron microscopy combined with the gold nanoparticle labeling technique. The results of the ultrastructural study revealed that chimeric proteins were densely assembled on collagen fibrils through the specific recognition of binding sites, producing the ordered array of chimeric proteins.
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Affiliation(s)
- Koichi Kato
- Institute for Frontier Medical Sciences, Kyoto University, Shogoin, Kyoto, Japan
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