1
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Faase RA, Keeling NM, Plaut JS, Leycam C, Munares GA, Hinds MT, Baio JE, Jurney PL. Temporal Changes in the Surface Chemistry and Topography of Reactive Ion Plasma-Treated Poly(vinyl alcohol) Alter Endothelialization Potential. ACS APPLIED MATERIALS & INTERFACES 2024; 16:389-400. [PMID: 38117934 PMCID: PMC10788828 DOI: 10.1021/acsami.3c16759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 12/22/2023]
Abstract
Synthetic small-diameter vascular grafts (<6 mm) are used in the treatment of cardiovascular diseases, including coronary artery disease, but fail much more readily than similar grafts made from autologous vascular tissue. A promising approach to improve the patency rates of synthetic vascular grafts is to promote the adhesion of endothelial cells to the luminal surface of the graft. In this study, we characterized the surface chemical and topographic changes imparted on poly(vinyl alcohol) (PVA), an emerging hydrogel vascular graft material, after exposure to various reactive ion plasma (RIP) surface treatments, how these changes dissipate after storage in a sealed environment at standard temperature and pressure, and the effect of these changes on the adhesion of endothelial colony-forming cells (ECFCs). We showed that RIP treatments including O2, N2, or Ar at two radiofrequency powers, 50 and 100 W, improved ECFC adhesion compared to untreated PVA and to different degrees for each RIP treatment, but that the topographic and chemical changes responsible for the increased cell affinity dissipate in samples treated and allowed to age for 230 days. We characterized the effect of aging on RIP-treated PVA using an assay to quantify ECFCs on RIP-treated PVA 48 h after seeding, atomic force microscopy to probe surface topography, scanning electron microscopy to visualize surface modifications, and X-ray photoelectron spectroscopy to investigate surface chemistry. Our results show that after treatment at higher RF powers, the surface exhibits increased roughness and greater levels of charged nitrogen species across all precursor gases and that these surface modifications are beneficial for the attachment of ECFCs. This study is important for our understanding of the stability of surface modifications used to promote the adhesion of vascular cells such as ECFCs.
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Affiliation(s)
- Ryan A. Faase
- School
of Chemical, Biological, and Environmental Engineering, Oregon State University, 103 Gleeson Hall, Corvallis, Oregon 97331, United States
| | - Novella M. Keeling
- Biomedical
Engineering Program, University of Colorado
Boulder, 1111 Engineering Drive 521 UCB, Boulder, Colorado 80309-0521, United States
- Department
of Biomedical Engineering, Oregon Health
and Science University, 3303 SW Bond Ave, Portland, Oregon 97239, United States
| | - Justin S. Plaut
- Cancer
Early Detection Advanced Research Center, Knight Cancer Institute, Oregon Health and Science University, 3303 SW Bond Ave, Portland, Oregon 97239, United States
| | - Christian Leycam
- Department
of Biomedical Engineering, San José
State University, One Washington Square, San Jose, California 95112-3613, United States
| | - Gabriela Acevedo Munares
- Department
of Biomedical Engineering, San José
State University, One Washington Square, San Jose, California 95112-3613, United States
| | - Monica T. Hinds
- Department
of Biomedical Engineering, Oregon Health
and Science University, 3303 SW Bond Ave, Portland, Oregon 97239, United States
| | - Joe E. Baio
- School
of Chemical, Biological, and Environmental Engineering, Oregon State University, 103 Gleeson Hall, Corvallis, Oregon 97331, United States
| | - Patrick L. Jurney
- Department
of Biomedical Engineering, San José
State University, One Washington Square, San Jose, California 95112-3613, United States
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2
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Aktas B, Ozgun A, Kilickap BD, Garipcan B. Cell adhesion molecule immobilized gold surfaces for enhanced neuron-electrode interfaces. J Biomed Mater Res B Appl Biomater 2024; 112:e35310. [PMID: 37950592 DOI: 10.1002/jbm.b.35310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 06/24/2023] [Accepted: 07/31/2023] [Indexed: 11/12/2023]
Abstract
To provide a long-term solution for increasing the biocompatibility of neuroprosthetics, approaches to reduce the side effects of invasive neuro-implantable devices are still in need of improvement. Physical, chemical, and bioactive design aspects of the biomaterials are proven to be important for providing proper cell-to-cell, cell-to-material interactions. Particularly, modification of implant surfaces with bioactive cues, especially cell adhesion molecules (CAMs) that capitalize on native neural adhesion mechanisms, are promising candidates in favor of providing efficient interfaces. Within this concept, this study utilized specific CAMs, namely N-Cadherin (Neural cadherin, N-Cad) and neural cell adhesion molecule (NCAM), to enhance neuron-electrode contact by mimicking the cell-to-ECM interactions for improving the survival of cells and promoting neurite outgrowth. For this purpose, representative gold electrode surfaces were modified with N-Cadherin, NCAM, and the mixture (1:1) of these molecules. Modifications were characterized, and the effect of surface modification on both differentiated and undifferentiated neuroblastoma SH-SY5Y cell lines were compared. The findings demonstrated the successful modification of these molecules which subsequently exhibited biocompatible properties as evidenced by the cell viability results. In cell culture experiments, the CAMs displayed promising results in promoting neurite outgrowth compared to conventional poly-l-lysine coated surfaces, especially NCAM and N-Cad/NCAM modified surfaces clearly showed significant improvement. Overall, this optimized approach is expected to provide an insight into the action mechanisms of cells against the local environment and advance processes for the fabrication of alternative neural interfaces.
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Affiliation(s)
- Bengu Aktas
- Institute of Biomedical Engineering, Bogazici University, Istanbul, Turkey
| | - Alp Ozgun
- Department of Mechanical Engineering, Faculty of Engineering, University of Ottawa, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | | | - Bora Garipcan
- Institute of Biomedical Engineering, Bogazici University, Istanbul, Turkey
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3
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Brigiano FS, Bazin D, Tielens F. Peculiar opportunities given by XPS spectroscopy for the clinician. CR CHIM 2022. [DOI: 10.5802/crchim.154] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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4
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Villalobos-Castillejos F, Lartundo-Rojas L, Leyva-Daniel D, Porras-Saavedra J, Pereyra-Castro S, Gutiérrez-López G, Alamilla-Beltrán L. Effect of emulsification techniques on the distribution of components on the surface of microparticles obtained by spray drying. FOOD AND BIOPRODUCTS PROCESSING 2021. [DOI: 10.1016/j.fbp.2021.07.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Wagstaffe M, Hussain H, Taylor M, Murphy M, Silikas N, Thomas AG. Interaction of a tripeptide with titania surfaces: RGD adsorption on rutile TiO 2(110) and model dental implant surfaces. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110030. [PMID: 31546374 DOI: 10.1016/j.msec.2019.110030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/01/2019] [Accepted: 07/28/2019] [Indexed: 01/04/2023]
Abstract
The adsorption of peptides on metal oxides is an area of significant interest, both fundamentally and in a number of technologically important areas. These range from the integration of biomaterials in the body, to denaturation of protein therapeutics and the use of biomolecules and bioinspired materials in synthesis and stabilization of novel nanomaterials. Here we present a study of the tripeptide arginylglycylaspartic acid (RGD) on the surfaces of vacuum-prepared single crystalline TiO2(110), pyrocatechol-capped TiO2(110), and model SLA and SLActive dental implant samples. X-ray Photoelectron Spectroscopy and Scanning Tunneling Microscopy show that the RGD adsorption mode on the single crystal is consistent with bonding through the deprotonated carboxylate groups of the peptide to surface Ti atoms of the substrate. Despite the increased hydrophobicity of the pyrocatechol-capped TiO2(110) surface RGD adsorption from solution increases following this surface treatment. RGD adsorption on SLA and SLActive surfaces shows that the SLActive surface has a greater uptake of RGD. The RGD uptake on the pyrocatechol capped single crystal and the model implant surfaces suggest that the ease with which surface contaminant hydrocarbons are removed from the surface has a greater influence on peptide adsorption than hydrophobicity/hydrophilicity of the surface.
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Affiliation(s)
- Michael Wagstaffe
- School of Physics and Astronomy, The University of Manchester, Oxford, Road, M13 9PL, UK
| | - Hadeel Hussain
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
| | - Mark Taylor
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
| | - Matthew Murphy
- School of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Nikolaos Silikas
- School of Dentistry, The University of Manchester, Manchester M13 9PL, UK
| | - Andrew G Thomas
- School of Materials, The University of Manchester, Manchester M13 9PL, UK; The Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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6
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Shi R, Chen Y. Controlled Formation of Defective Shell on TiO
2
(001) Facets for Enhanced Photocatalytic CO
2
Reduction. ChemCatChem 2019. [DOI: 10.1002/cctc.201900061] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Rui Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & HKU-CAS Joint Laboratory on New Materials Technical Institute of Physics and ChemistryUniversity of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yong Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & HKU-CAS Joint Laboratory on New Materials Technical Institute of Physics and ChemistryUniversity of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
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7
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Liao J, Wu S, Li K, Fan Y, Dunne N, Li X. Peptide‐modified bone repair materials: Factors influencing osteogenic activity. J Biomed Mater Res A 2019; 107:1491-1512. [DOI: 10.1002/jbm.a.36663] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/29/2019] [Accepted: 02/14/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Jie Liao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical Engineering, Beihang University Beijing 100083 China
| | - Shuai Wu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical Engineering, Beihang University Beijing 100083 China
| | - Kun Li
- State Key Laboratory of Powder MetallurgyCentral South University Changsha 410083 China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical Engineering, Beihang University Beijing 100083 China
- Beijing Advanced Innovation Center for Biomedical EngineeringBeihang University Beijing 100083 China
| | - Nicholas Dunne
- Centre for Medical Engineering ResearchSchool of Mechanical and Manufacturing Engineering, Dublin City University Stokes Building, Collins Avenue, Dublin 9 Ireland
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical Engineering, Beihang University Beijing 100083 China
- Beijing Advanced Innovation Center for Biomedical EngineeringBeihang University Beijing 100083 China
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8
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Silva-Moraes MO, Garcia-Basabe Y, de Souza RFB, Mota AJ, Passos RR, Galante D, Fonseca Filho HD, Romaguera-Barcelay Y, Rocco MLM, Brito WR. Geometry-dependent DNA-TiO 2 immobilization mechanism: A spectroscopic approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 199:349-355. [PMID: 29635179 DOI: 10.1016/j.saa.2018.03.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 03/28/2018] [Accepted: 03/30/2018] [Indexed: 06/08/2023]
Abstract
DNA nucleotides are used as a molecular recognition system on electrodes modified to be applied in the detection of various diseases, but immobilization mechanisms, as well as, charge transfers are not satisfactorily described in the literature. An electrochemical and spectroscopic study was carried out to characterize the molecular groups involved in the direct immobilization of DNA structures on the surface of nanostructured TiO2 with the aim of evaluating the influence of the geometrical aspects. X-ray photoelectron spectroscopy at O1s and P2p core levels indicate that immobilization of DNA samples occurs through covalent (POTi) bonds. X-ray absorption spectra at the Ti2p edge reinforce this conclusion. A new species at 138.5eV was reported from P2p XPS spectra analysis which plays an important role in DNA-TiO2 immobilization. The POTi/OTi ratio showed that quantitatively the DNA immobilization mechanism is dependent on their geometry, becoming more efficient for plasmid ds-DNA structures than for PCR ds-DNA structures. The analysis of photoabsorption spectra at C1s edge revealed that the molecular groups that participate in the C1s→LUMO electronic transitions have different pathways in the charge transfer processes at the DNA-TiO2 interface. Our results may contribute to additional studies of immobilization mechanisms understanding the influence of the geometry of different DNA molecules on nanostructured semiconductor and possible impact to the charge transfer processes with application in biosensors or aptamers.
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Affiliation(s)
- M O Silva-Moraes
- Department of Chemistry, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - Y Garcia-Basabe
- Institute of Science of Life and Nature - ILACVN, Federal University of Latin-American Integration, Foz do Iguaçu 85866-000, PR, Brazil
| | - R F B de Souza
- Department of Chemistry, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - A J Mota
- Faculty of Agricultural Sciences, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - R R Passos
- Department of Chemistry, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - D Galante
- Brazilian Synchrotron Light Laboratory LNLS/CNPEM, Campinas, São Paulo 13083-970, Brazil
| | - H D Fonseca Filho
- Department of Physics, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - Y Romaguera-Barcelay
- Department of Physics, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - M L M Rocco
- Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - W R Brito
- Department of Chemistry, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil.
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9
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Franchi S, Secchi V, Santi M, Dettin M, Zamuner A, Battocchio C, Iucci G. Biofunctionalization of TiO 2 surfaces with self-assembling oligopeptides in different pH and Ionic Strength conditions: Charge effects and molecular organization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 90:651-656. [PMID: 29853135 DOI: 10.1016/j.msec.2018.05.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 04/15/2018] [Accepted: 05/02/2018] [Indexed: 11/26/2022]
Abstract
Self-assembling peptides (SAPs) were investigated by means of XPS and Angular Dependent NEXAFS spectroscopies, with the aim to probe the influence of pH and Ionic Strength conditions on the chemical structure and molecular organization of SAPs anchored on titania surfaces. XPS at the C1s, N1s, O1s core levels allowed to study surfaces and biomolecule/substrate interfaces. NEXAFS data allowed ascertaining that SAPs molecular structure is preserved upon grafting to the titania surface. Angular Dependent NEXAFS was used to investigate the influence of environmental conditions on the molecular organization behaviour. The objective of our study was to establish a set of methodologies for obtaining arrangements of well-organized biomolecules on scaffolds surfaces as a basic technology to develop and optimize cells adhesion and proliferation for tissue engineering applications.
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Affiliation(s)
- S Franchi
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy
| | - V Secchi
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy.
| | - M Santi
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy
| | - M Dettin
- Department of Chemical Process Engineering, University of Padova, via Marzolo 9, 35131 Padova, Italy
| | - A Zamuner
- Department of Chemical Process Engineering, University of Padova, via Marzolo 9, 35131 Padova, Italy
| | - C Battocchio
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy
| | - G Iucci
- Department of Sciences, University of Roma Tre, Via della Vasca Navale 79, 00146 Rome, Italy
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10
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Damia C, Marchat D, Lemoine C, Douard N, Chaleix V, Sol V, Larochette N, Logeart-Avramoglou D, Brie J, Champion E. Functionalization of phosphocalcic bioceramics for bone repair applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 95:343-354. [PMID: 30573258 DOI: 10.1016/j.msec.2018.01.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 09/18/2017] [Accepted: 01/28/2018] [Indexed: 01/05/2023]
Abstract
This work is devoted to the processing of bone morphogenetic protein (BMP-2) functionalized silicate substituted hydroxyapatite (SiHA) ceramic spheres. The motivation behind it is to develop injectable hydrogel/bioceramic composites for bone reconstruction applications. SiHA microspheres were shaped by spray drying and thoroughly characterized. The silicate substitution was used to provide preferred chemical sites at the ceramic surface for the covalent immobilization of BMP-2. In order to control the density and the release of the immobilized BMP-2, its grafting was performed via ethoxysilanes and polyethylene glycols. A method based on Kaiser's test was used to quantify the free amino groups of grafted organosilanes available at the ceramic surface for BMP-2 immobilization. The SiHA surface modification was investigated by means of X-ray photoelectron spectroscopy, Fourier transformed infrared spectroscopy and thermogravimetry coupled with mass spectrometry. The BMP-2 bioactivity was assessed, in vitro, by measuring the luciferase expression of a stably transfected C3H10 cell line (C3H10-BRE/Luc cells). The results provided evidence that the BMP-2 grafted onto SiHA spheres remained bioactive.
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Affiliation(s)
- Chantal Damia
- Univ. Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France.
| | - David Marchat
- Ecole Nationale Supérieure des Mines, CIS-EMSE, INSERM U1059, 158 cours Fauriel, F-42023 Saint-Etienne cedex 2, France
| | - Charly Lemoine
- Univ. Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France
| | - Nathalie Douard
- Ecole Nationale Supérieure des Mines, CIS-EMSE, INSERM U1059, 158 cours Fauriel, F-42023 Saint-Etienne cedex 2, France
| | | | - Vincent Sol
- Univ. Limoges, LCSN EA 1069, F-87000 Limoges, France
| | - Nathanaël Larochette
- Laboratory of Bioengineering and Bioimaging for Osteo-Articular tissues, UMR 7052, CNRS, Paris Diderot University, Sorbonne Paris Cité, Paris, France
| | - Delphine Logeart-Avramoglou
- Laboratory of Bioengineering and Bioimaging for Osteo-Articular tissues, UMR 7052, CNRS, Paris Diderot University, Sorbonne Paris Cité, Paris, France
| | - Joël Brie
- Univ. Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France; CHU Limoges, Service de Chirurgie Maxillo-Faciale, F-87000, Limoges, France
| | - Eric Champion
- Univ. Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France
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11
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Medvedev A, Neumann A, Ng H, Lapovok R, Kasper C, Lowe T, Anumalasetty V, Estrin Y. Combined effect of grain refinement and surface modification of pure titanium on the attachment of mesenchymal stem cells and osteoblast-like SaOS-2 cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:483-497. [DOI: 10.1016/j.msec.2016.10.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/17/2016] [Accepted: 10/18/2016] [Indexed: 01/17/2023]
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12
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Investigation of cellular response to covalent immobilization of peptide and hydrophobic attachment of peptide amphiphiles on substrates. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2016.10.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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13
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Liu X, Yu B, Huang Q, Liu R, Feng Q, Cai Q, Mi S. In vitro BMP-2 peptide release from thiolated chitosan based hydrogel. Int J Biol Macromol 2016; 93:314-321. [PMID: 27544436 DOI: 10.1016/j.ijbiomac.2016.08.048] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 07/27/2016] [Accepted: 08/16/2016] [Indexed: 11/17/2022]
Abstract
Thiolated chitosan based thermo-sensitive hydrogel is a water soluble system and the existing thiol groups are beneficial for the delivery of cysteine-rich peptides. In the present study, a kind of thiolated chitosan, i.e. chitosan-4-thio-butylamidine (CS-TBA) conjugate was characterized and used to prepare CS-TBA/hydroxyapatite (HA)/beta-glycerophosphate disodium (β-GP) thermo-sensitive hydrogel. The cysteine terminated peptide 24 (P24) containing residues 73-92 of the knuckle epitope of BMP-2 (N→C: KIPKASSVPTELSAISTLYLSGGC) was synthesized and characterized. The release behavior of P24 from CS-TBA based hydrogel was investigated in vitro. The thiol groups in CS-TBA may react with thiol groups in P24, thus decreases the P24 release rate and maintains the peptide release for a longer time compared with unmodified chitosan based hydrogel. Moreover, the bioactivity of P24 is preserved during release process. These results indicate that P24 loaded CS-TBA based thermosensitive hydrogel is a potential material for minimally invasive surgery of bone repair.
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Affiliation(s)
- Xujie Liu
- Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Bo Yu
- Department of Orthopedics, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, China
| | - Qianli Huang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Rui Liu
- Department of Orthopedics, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, China
| | - Qingling Feng
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; Key Laboratory of Advanced Materials of Ministry of Education of China, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Qiang Cai
- Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; Key Laboratory of Advanced Materials of Ministry of Education of China, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Shengli Mi
- Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
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14
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Investigation of human cell response to covalently attached RADA16-I peptide on silicon surfaces. Colloids Surf B Biointerfaces 2016; 145:470-478. [PMID: 27236098 DOI: 10.1016/j.colsurfb.2016.05.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 05/06/2016] [Accepted: 05/11/2016] [Indexed: 12/15/2022]
Abstract
We described a modification of the ionic (RADARADARADARADA)(1) peptide or RADA16-I with 4-azidophenyl isothiocyanate via a specific and gentle reaction. The azidated peptide was covalently immobilized on an alkyne-terminated monolayer on Si(111) via the Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition reaction. Detailed characterization using Impedance spectroscopy (IS), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy demonstrated high coverage of the RADA 16-I peptide on silicon surfaces. Scanning electron microscopy (SEM) and methyl tetrazole sulfate (MTS) assay were used to characterize the morphology and proliferation ability of human fibroblast cells on surfaces. Cell adhesion assay was performed to examine cell-substrate interactions. Significant differences in fibroblast cell morphology, adhesion, and viability were observed on the RADA16-I peptide modified surfaces compared to the control surfaces. These results may suggest a potential application of RADA16-I peptide modified surfaces in biomedical applications.
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15
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Chen Y, Tao Q, Fu W, Yang H, Zhou X, Su S, Ding D, Mu Y, Li X, Li M. Enhanced photoelectric performance of PbS/CdS quantum dot co-sensitized solar cells via hydrogenated TiO2 nanorod arrays. Chem Commun (Camb) 2015; 50:9509-12. [PMID: 25010989 DOI: 10.1039/c4cc02217c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enhanced photoelectric performance of quantum dot sensitized solar cells via hydrogenated TiO2 is proposed. The best energy conversion efficiency is 1.5 times higher than cells without hydrogen treatment. We demonstrated that introducing oxygen vacancies by hydrogenation is an effective and feasible method for enhanced photoelectric performance.
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Affiliation(s)
- Yanli Chen
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China.
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16
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Fabregat G, Teixeira-Dias B, del Valle LJ, Armelin E, Estrany F, Alemán C. Incorporation of a clot-binding peptide into polythiophene: properties of composites for biomedical applications. ACS APPLIED MATERIALS & INTERFACES 2014; 6:11940-11954. [PMID: 25069384 DOI: 10.1021/am503904h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Biocomposites formed by a pentapeptide (CREKA), which recognizes clotted plasma proteins, entrapped into the poly(3,4-ethylenedioxythiophene) (PEDOT) matrix have been prepared using three very different procedures. X-ray photoelectron spectroscopy analyses indicate that PEDOT-CREKA films, prepared by chronoamperometry in basic aqueous solution (pH = 10.3) and deposited onto a PEDOT internal layer, present the higher concentration of peptide: one CREKA molecule per six polymer repeat units. The surface of this bilayered system shows numerous folds homogeneously distributed, which have been exhaustively characterized by scanning electron microscopy and atomic force microscopy. Indeed, the morphology and topography of such bilayered films is completely different from those of biocomposite-prepared acid aqueous and organic solutions as polymerization media. The impact of the entrapped peptide molecules in the electrochemical properties of the conducting polymer has been found to be practically negligible. In contrast, biocompatibility assays with two different cellular lines indicate that PEDOT-CREKA favors cellular proliferation, which has been attributed to the binding of the peptide to the fibrin molecules from the serum used as a supplement in the culture medium. The latter assumption has been corroborated examining the ability of PEDOT-CREKA to bind fibrin. The latter ability has been also used to explore an alternative strategy based on the treatment of PEDOT-CREKA with fibrin to promote cell attachment and growth. Overall, the results suggest that PEDOT-CREKA is appropriated for multiple biomedical applications combining the electrochemical properties of conducting polymer and the ability of the peptide to recognize and bind proteins.
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Affiliation(s)
- Georgina Fabregat
- Departament d'Enginyeria Química, ETSEIB, Universitat Politècnica de Catalunya , Avda. Diagonal 647, Barcelona E-08028, Spain
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17
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Bini D, Russo L, Battocchio C, Natalello A, Polzonetti G, Doglia SM, Nicotra F, Cipolla L. Dendron Synthesis and Carbohydrate Immobilization on a Biomaterial Surface by a Double-Click Reaction. Org Lett 2014; 16:1298-301. [DOI: 10.1021/ol403476z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Davide Bini
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Laura Russo
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Chiara Battocchio
- Department
of Sciences, INSTM, CNISM and CISDiC, University Roma Tre, Via della Vasca
Navale 84, 00146 Rome, Italy
| | - Antonino Natalello
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Giovanni Polzonetti
- Department
of Sciences, INSTM, CNISM and CISDiC, University Roma Tre, Via della Vasca
Navale 84, 00146 Rome, Italy
| | - Silvia Maria Doglia
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Francesco Nicotra
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Laura Cipolla
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
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18
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Sun M, Chen Z, Yu J. Highly efficient visible light induced photoelectrochemical anticorrosion for 304 SS by Ni-doped TiO2. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.07.121] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Li D, Lu X, Lin H, Ren F, Leng Y. Chitosan/bovine serum albumin co-micropatterns on functionalized titanium surfaces and their effects on osteoblasts. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:489-502. [PMID: 23132401 DOI: 10.1007/s10856-012-4810-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 10/31/2012] [Indexed: 06/01/2023]
Abstract
Chitosan (CS)/bovine serum albumin (BSA) micropatterns were prepared on functionalized Ti surfaces by micro-transfer molding (μ-TM). μ-TM realized the spatially controlled immobilization of cells and offered a new way of studying the interaction between micropatterns and cells. Two kinds of micropatterns were produced: (1) microgrooves representing a discontinuously grooved co-micropattern, with the rectangular CS region separated by BSA walls; (2) microcylinders representing a continuously interconnected co-micropattern, with the net-like CS region separated by BSA cylinders. A comparison of cell behaviors on the two types of micropatterns indicated that the shape rather than the size had a dominant effect on cell proliferation. The micropattern size in the same range of cell diameters favored cell proliferation. However, cell differentiation was more sensitive to the size rather than to the shape of the micropatterns. In conclusion, cell behavior can be regulated by micropatterns integrating different materials.
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Affiliation(s)
- Dan Li
- Key Lab of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
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20
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Fabregat G, Ballano G, Armelin E, del Valle LJ, Cativiela C, Alemán C. An electroactive and biologically responsive hybrid conjugate based on chemical similarity. Polym Chem 2013. [DOI: 10.1039/c2py20894f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Zhang Q, Lima DQ, Lee I, Zaera F, Chi M, Yin Y. A Highly Active Titanium Dioxide Based Visible-Light Photocatalyst with Nonmetal Doping and Plasmonic Metal Decoration. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101969] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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A Highly Active Titanium Dioxide Based Visible-Light Photocatalyst with Nonmetal Doping and Plasmonic Metal Decoration. Angew Chem Int Ed Engl 2011; 50:7088-92. [DOI: 10.1002/anie.201101969] [Citation(s) in RCA: 272] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2011] [Revised: 05/19/2011] [Indexed: 11/07/2022]
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23
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Yan Y, Hao B, Chen G. Biomimetic synthesis of titania with chitosan-mediated phase transformation at room temperature. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11056j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Zhang HP, Lu X, Fang LM, Weng J, Huang N, Leng Y. Molecular dynamics simulation of RGD peptide adsorption on titanium oxide surfaces. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:3437-3441. [PMID: 18584123 DOI: 10.1007/s10856-008-3498-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2007] [Accepted: 06/06/2008] [Indexed: 05/26/2023]
Abstract
Peptide Arg-Gly-Asp (RGD) sequence is a ubiquitous adhesive motif found in various bone extracellular matrix proteins and is crucial in the biomaterial surface/interface reaction. This study analyzed the adsorption of RGD on different titanium oxide surfaces with molecular dynamics simulation. The simulation results indicate that the RGD peptide binds strongly with anatase (001) and rutile (010). RGD conformation changes due to the variation of the backbone torsion angle in the middle of the RGD chain. Pair correlation function analysis indicates that the interaction of the RGD peptide and the titanium oxide results from hydrogen bonding and the groups in RGD play different roles during the adsorption process. This study provides useful information on how to design titanium surfaces in order to modulate peptide or protein adsorption.
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Affiliation(s)
- Hong-Ping Zhang
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
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