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Osteoblast and bacterial cell response on RGD peptide‐functionalized chitosan coatings electrophoretically deposited from different suspensions on Ti13Nb13Zr alloy
Abstract
Metallic materials for long-term load-bearing implants still do not provide high antimicrobial activity while maintaining strong compatibility with bone cells. This study aimed to modify the surface of Ti13Nb13Zr alloy by electrophoretic deposition of a chitosan coating with a covalently attached Arg-Gly-Asp (RGD) peptide. The suspensions for coating deposition were prepared in two different ways either using hydroxyacetic acid or a carbon dioxide saturation process. The coatings were deposited using a voltage of 10 V for 1 min. The prepared coatings were examined using SEM, EDS, FTIR, and XPS techniques. In addition, the wettability of these surfaces, corrosion resistance, adhesion of the coatings to the metallic substrate, and their antimicrobial activity (E. coli, S. aureus) and cytocompatibility properties using the MTT and LDH assays were studied. The coatings produced tightly covered the metallic substrate. Spectroscopic studies confirmed that the peptide did not detach from the chitosan chain during electrophoretic deposition. All tested samples showed high corrosion resistance (corrosion current density measured in nA/cm2). The deposited coatings contributed to a significant increase in the antimicrobial activity of the samples against Gram-positive and Gram-negative bacteria (reduction in bacterial counts from 99% to, for CS-RGD-Acid and the S. aureus strain, total killing capacity). MTT and LDH results showed high compatibility with bone cells of the modified surfaces compared to the bare substrate (survival rates above 75% under indirect contact conditions and above 100% under direct contact conditions). However, the adhesion of the coatings was considered weak.
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Authors (10)
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Anna Ronowska dr hab. n. med.
- Zakład Medycyny Laboratoryjnej, Gdański Uniwersytet Medyczny
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Natalia Karska
- Katedra Chemii Biomedycznej, Wydział Chemii, Uniwersytet Gdański
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Sylwia Rodziewicz-Motowidło dr hab.
- Katedra Chemii Biomedycznej, Wydział Chemii, Uniwersytet Gdański
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1002/jbm.b.35286
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
no. 111,
pages 1800 - 1812,
ISSN: 1552-4973 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Pawłowski Ł., Mania S., Banach-Kopeć A., Bartmański M., Ronowska A., Jurak K., Mielewczyk-Gryń A., Karska N., Rodziewicz-Motowidło S., Zieliński A.: Osteoblast and bacterial cell response on RGD peptide‐functionalized chitosan coatings electrophoretically deposited from different suspensions on Ti13Nb13Zr alloy// JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS -Vol. 111,iss. 10 (2023), s.1800-1812
- DOI:
- Digital Object Identifier (open in new tab) 10.1002/jbm.b.35286
- Sources of funding:
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- Free publication
- Verified by:
- Gdańsk University of Technology
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