https://scholars.lib.ntu.edu.tw/handle/123456789/600354
標題: | Physical gold nanoparticle-decorated polyethylene glycol-hydroxyapatite composites guide osteogenesis and angiogenesis of mesenchymal stem cells | 作者: | Shen C.-C Hsu S.-H Chang K.-B Yeh C.-A Chang H.-C Tang C.-M Yang Y.-C Hsieh H.-H SHAN-HUI HSU |
關鍵字: | Hydroxyapatite;Mesenchymal stem cells;Physical gold nanoparticle;Polyethylene glycol | 公開日期: | 2021 | 卷: | 9 | 期: | 11 | 來源出版物: | Biomedicines | 摘要: | In this study, polyethylene glycol (PEG) with hydroxyapatite (HA), with the incorporation of physical gold nanoparticles (AuNPs), was created and equipped through a surface coating technique in order to form PEG-HA-AuNP nanocomposites. The surface morphology and chemical composition were characterized using scanning electron microscopy (SEM), atomic force microscopy (AFM), UV–Vis spectroscopy (UV–Vis), Fourier transform infrared spectroscopy (FTIR), X-ray photo-electron spectroscopy (XPS), and contact angle assessment. The effects of PEG-HA-AuNP nanocom-posites on the biocompatibility and biological activity of MC3T3-E1 osteoblast cells, endothelial cells (EC), macrophages (RAW 264.7), and human mesenchymal stem cells (MSCs), as well as the guiding of osteogenic differentiation, were estimated through the use of an in vitro assay. Moreover, the anti-inflammatory, biocompatibility, and endothelialization capacities were further assessed through in vivo evaluation. The PEG-HA-AuNP nanocomposites showed superior biological properties and biocompatibility capacity for cell behavior in both MC3T3-E1 cells and MSCs. These biological events surrounding the cells could be associated with the activation of adhesion, proliferation, migration, and differentiation processes on the PEG-HA-AuNP nanocomposites. Indeed, the induction of the osteogenic differentiation of MSCs by PEG-HA-AuNP nanocomposites and enhanced mineralization activity were also evidenced in this study. Moreover, from the in vivo assay, we further found that PEG-HA-AuNP nanocomposites not only facilitate the anti-immune response, as well as reducing CD86 expression, but also facilitate the endothelialization ability, as well as promoting CD31 expression, when implanted into rats subcutaneously for a period of 1 month. The current research illustrates the potential of PEG-HA-AuNP nanocomposites when used in combination with MSCs for the regeneration of bone tissue, with their nanotopography being employed as an applicable surface modification approach for the fabrication of biomaterials. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119653881&doi=10.3390%2fbiomedicines9111632&partnerID=40&md5=b589f0546b73136e9a9005cca503906e https://scholars.lib.ntu.edu.tw/handle/123456789/600354 |
ISSN: | 22279059 | DOI: | 10.3390/biomedicines9111632 |
顯示於: | 高分子科學與工程學研究所 |
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