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Zimmerling A, Sunil C, Zhou Y, Chen X. Development of a Nanoparticle System for Controlled Release in Bioprinted Respiratory Scaffolds. J Funct Biomater 2024; 15:20. [PMID: 38248687 PMCID: PMC10816437 DOI: 10.3390/jfb15010020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/21/2023] [Accepted: 01/05/2024] [Indexed: 01/23/2024] Open
Abstract
The use of nanoparticle systems for the controlled release of growth factors is a promising approach to mimicking of the biochemical environment of native tissues in tissue engineering. However, sustaining growth factor release inside an appropriate therapeutic window is a challenge, particularly in bioprinted scaffolds. In this study, a chitosan-coated alginate-based nanoparticle system loaded with hepatocyte growth factor was developed and then incorporated into bioprinted scaffolds. The release kinetics were investigated with a focus on identifying the impact of the chitosan coating and culture conditions. Our results demonstrated that the chitosan coating decreased the release rate and lessened the initial burst release, while culturing in dynamic conditions had no significant impact compared to static conditions. The nanoparticles were then incorporated into bioinks at various concentrations, and scaffolds with a three-dimensional (3D) structure were bioprinted from the bioinks containing human pulmonary fibroblasts and bronchial epithelial cells to investigate the potential use of a controlled release system in respiratory tissue engineering. It was found that the bioink loaded with a concentration of 4 µg/mL of nanoparticles had better printability compared to other concentrations, while the mechanical stability of the scaffolds was maintained over a 14-day culture period. The examination of the incorporated cells demonstrated a high degree of viability and proliferation with visualization of the beginning of an epithelial barrier layer. Taken together, this study demonstrates that a chitosan-coated alginate-based nanoparticle system allows the sustained release of growth factors in bioprinted respiratory tissue scaffolds.
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Affiliation(s)
- Amanda Zimmerling
- Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada (X.C.)
- Vaccine and Infectious Disease Organization (VIDO), University of Saskatchewan, Saskatoon, SK S7N 5E3, Canada;
| | - Christina Sunil
- Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada (X.C.)
| | - Yan Zhou
- Vaccine and Infectious Disease Organization (VIDO), University of Saskatchewan, Saskatoon, SK S7N 5E3, Canada;
| | - Xiongbiao Chen
- Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada (X.C.)
- Department of Mechanical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada
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Nazemi N, Rajabi N, Aslani Z, Kharaziha M, Kasiri-Asgarani M, Bakhsheshi-Rad HR, Najafinezhad A, Ismail AF, Sharif S, Berto F. Synthesis and characterization of gentamicin loaded ZSM-5 scaffold: Cytocompatibility and antibacterial activity. J Biomater Appl 2023; 37:979-991. [PMID: 36454961 DOI: 10.1177/08853282221140672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Porous structure, biocompatibility and biodegradability, large surface area, and drug-loading ability are some remarkable properties of zeolite structure, making it a great possible option for bone tissue engineering. Herein, we evaluated the potential application of the ZSM-5 scaffold encapsulated GEN with high porosity structure and significant antibacterial properties. The space holder process has been employed as a new fabrication method with interconnected pores and suitable mechanical properties. In this study, for the first time, ZSM-5 scaffolds with GEN drug-loading were fabricated with the space holder method. The results showed excellent open porosity in the range of 70-78% for different GEN concentrations and appropriate mechanical properties. Apatite formation on the scaffold surface was determined with Simulation body fluid (SBF), and a new bone-like apatite layer shaping on all samples confirmed the in vitro bioactivity of ZSM-5-GEN scaffolds. Also, antibacterial properties were investigated against both gram-positive and gram-negative bacteria. The incorporation of various amounts of GEN increased the inhibition zone from 24 to 28 (for E. coli) and 26 to 37 (for S. aureus). In the culture with MG63 cells, great cell viability and high cell proliferation after 7 days of culture were determined.
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Affiliation(s)
- N Nazemi
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, 201564Islamic Azad University, Najafabad, Iran
| | - N Rajabi
- Department of Materials Engineering, 48456Isfahan University of Technology, Isfahan, Iran
| | - Z Aslani
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, 201564Islamic Azad University, Najafabad, Iran
| | - M Kharaziha
- Department of Materials Engineering, 48456Isfahan University of Technology, Isfahan, Iran
| | - M Kasiri-Asgarani
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, 201564Islamic Azad University, Najafabad, Iran
| | - H R Bakhsheshi-Rad
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, 201564Islamic Azad University, Najafabad, Iran
| | - A Najafinezhad
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, 201564Islamic Azad University, Najafabad, Iran
| | - A F Ismail
- Advanced Membrane Technology Research Center (AMTEC), 54702Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
| | - S Sharif
- Advanced Manufacturing Research Group, Faculty of Mechanical Engineering, 54702Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
| | - F Berto
- Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Roma, Italy
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