中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (10): 1997-2005.doi: 10.12307/2025.417

• 抗菌抗病毒材料 antibacterial and antiviral materials • 上一篇    下一篇

钛表面多酚介导铜离子涂层制备及抗菌抗氧化性能

官振菊1,2,谢永林2,向守刚3,张成栋1,李小龙1,李兴平3,蒲  超4,张  波4,罗栩伟4,肖东琴1   

  1. 川北医学院第二临床学院·南充市中心医院,1组织工程与干细胞研究所,2口腔科,4骨科,四川省南充市   637000;3成飞医院骨科,四川省成都市   610031
  • 收稿日期:2024-01-11 接受日期:2024-03-23 出版日期:2025-04-08 发布日期:2024-08-20
  • 通讯作者: 通讯作者:肖东琴,博士,副研究员,川北医学院第二临床学院·南充市中心医院组织工程与干细胞研究所,四川省南充市 637000 通讯作者:谢永林,硕士,主任医师,川北医学院第二临床学院·南充市中心医院口腔科,四川省南充市 637000
  • 作者简介:官振菊,女,1993年生,宁夏回族自治区吴忠市人,川北医学院在读硕士,主要从事口腔修复和种植研究。
  • 基金资助:
    国家自然科学基金项目(82002289),项目负责人:肖东琴;四川省自然科学基金项目(2022NSFSC0685),项目负责人:肖东琴;四川省自然科学基金项目(2022NSFSC0609),项目负责人:罗栩伟;四川省自然科学基金项目(2023NSFSC1740),项目负责人:张成栋;四川省医学科研课题计划项目(Q22061),项目负责人:蒲超;四川省医学科研课题计划项目(Q22034),项目负责人:李兴平;南充市市校合作科研项目(22SXJCQN0002),项目负责人:肖东琴;南充市市校合作科研项目(22SXQT0386),项目负责人:谢永林;南充市市校合作科研项目(22SXQT0310),项目负责人:张波

Preparation of polyphenol-mediated copper ion coating on titanium surface and antibacterial and antioxidant properties

Guan Zhenju1, 2, Xie Yonglin2, Xiang Shougang3, Zhang Chengdong1, Li Xiaolong1, Li Xingping3, Pu Chao4, Zhang Bo4, Luo Xuwei4, Xiao Dongqin1   

  1. 1Research Institute of Tissue Engineering and Stem Cells, 2Department of Stomatology, 4Department of Orthopedics, Nanchong Central Hospital · Second Clinical College of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China; 3Department of Orthopedics, Chengfei Hospital, Chengdu 610031, Sichuan Province, China
  • Received:2024-01-11 Accepted:2024-03-23 Online:2025-04-08 Published:2024-08-20
  • Contact: Corresponding author: Xiao Dongqin, MD, Associate researcher, Research Institute of Tissue Engineering and Stem Cells, Nanchong Central Hospital · Second Clinical College of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China Corresponding author: Xie Yonglin, Master, Chief physician, Department of Stomatology, Nanchong Central Hospital · Second Clinical College of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
  • About author:Guan Zhenju, Master candidate, Research Institute of Tissue Engineering and Stem Cells, and Department of Stomatology, Nanchong Central Hospital · Second Clinical College of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
  • Supported by:
    National Natural Science Foundation of China, No. 82002289 (to XDQ); Sichuan Natural Science Foundation Project, No. 2022NSFSC0685 (to XDQ); Sichuan Natural Science Foundation Project, No. 2022NSFSC0609 (to LXW); Sichuan Natural Science Foundation, No. 2023NSFSC1740 (to ZCD); Sichuan Medical Research Project, No. Q22061 (to PC); Sichuan Medical Research Project, No. Q22034 (to LXP); Nanchong City School Cooperation Research Project, No. 22SXJCQN0002 (to XDQ); Nanchong City School Cooperation Research Project, No. 22SXQT0386 (to XYL); Nanchong City School Cooperation Research Project, No. 22SXQT0310 (to ZB)

摘要:

文题释义:
细菌生物膜:附着在表面或聚集在细胞外基质中的固着、复杂细菌群落。细菌附着在钛植入体表面会在植入体周围形成有利于细菌生长的生物膜,生物膜感染会导致植入体松动、移位甚至脱落。
活性氧:含有氧自由基的高活性物质,主要包括羟基自由基、超氧化物和过氧化物。

背景:钛植入体因比强度高及良好的生物相容性被广泛应用于临床,然而在植入手术过程中,细菌感染及组织受损环境产生大量活性氧物质易导致组织延迟愈合与手术失败,因此开发具有抗菌和抗氧化性能的钛植入体极为重要。
目的:鉴于铜离子良好的抗菌性能及多酚类物质优良的抗氧化性能,拟在钛表面制备多酚介导的铜离子涂层,评价其体外抗菌及抗氧化性能。
方法:利用碱热法在钛表面制备纳米结构,然后将钛片置于单宁酸及铜离子溶液中,获得多酚介导的铜离子涂层,检测样品的表面形貌与水接触角,利用原子吸收光谱法检测铜离子的携载及释放。将金黄色葡萄球菌分别接种于纯钛片(空白组)、碱热处理钛片(对照组)、多酚介导的铜离子修饰钛片(实验组)表面,观察细菌存活状态。将成骨前体细胞MC3T3-E1分别接种于3组钛片表面,评价材料的抗氧化性能及生物活性。
结果与结论:①扫描电镜下可见多酚介导的铜离子修饰钛片表面存在棒状纳米结构,并且涂层无裂纹;多酚介导的铜离子修饰钛片表面亲水性接近纯钛片;原子吸收光谱结果显示,多酚介导后钛片表面铜离子的携载量增加了51%,铜离子呈均匀释放。②空白组、对照组、实验组钛片的抗菌率为0%,21.65%,93.75%;活死染色与CTC染色显示,空白组钛片表面的活细菌最多,实验组钛片表面的活细菌最少。③活死染色与CCK-8检测结果显示,3组钛片均具有良好的细胞相容性,并且实验组钛片更有利于MC3T3-E1细胞增殖;活性氧荧光探针检测显示,相较于其他两组,实验组钛片表面活性氧荧光强度明显减弱;碱性磷酸酶与茜素红S染色结果显示,相较于其他两组,实验组钛片表面MC3T3-E1细胞的成骨分化与细胞外基质矿化能力更强。④结果表明,多酚介导的铜离子涂层具有较强的抗菌、抗氧化及促成骨分化性能。
https://orcid.org/0009-0001-7952-5584 (官振菊) 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料;口腔生物材料;纳米材料;缓释材料;材料相容性;组织工程

关键词: , 植入体, 抗菌, 抗氧化, 多酚, 铜离子, 涂层

Abstract: BACKGROUND: Titanium implants are widely used in clinical practice because of their high strength and good biocompatibility. However, during implantation, bacterial infection and tissue damage environment produce a large number of reactive oxygen species, which can easily lead to delayed tissue healing and surgical failure. Consequently, the development of titanium implants with antimicrobial and antioxidant properties becomes paramount.
OBJECTIVE: Considering the potent antimicrobial attributes of copper ions and the remarkable antioxidant qualities of polyphenols, we proposed the fabrication of polyphenol-mediated copper ion coatings on titanium surfaces. These coatings were subsequently assessed for their in vitro antimicrobial and antioxidant properties.
METHODS: Nanostructures were generated on the titanium surface using the alkali thermal method. The titanium was immersed in a solution containing tannic acid and copper ions to achieve polyphenol-mediated copper ion coatings. The surface morphology and water contact angle were detected. The loading and release of copper ions were examined using atomic absorption spectroscopy. Staphylococcus aureus was inoculated on the surface of pure titanium sheet (blank group), alkali heat treated titanium sheet (control group), and polyphenol mediated copper ion modified titanium sheet (experimental group) to observe the bacterial survival status. Osteoblast precursor cells MC3T3-E1 were co-cultivated on the surface of three groups of titanium sheets to assess their antioxidant properties and bioactivity. 
RESULTS AND CONCLUSION: (1) Scanning electron microscopy showed that the polyphenol-mediated copper ion modified titanium sheet had rod-like nanostructures and no cracks on the surface. The surface hydrophilicity of copper ion modified titanium sheet mediated by polyphenol was close to that of pure titanium sheet. Atomic absorption spectrometry results showed a 51% increase in the loading capacity of copper ions after polyphenol mediation, with a uniform release of copper ions. (2) The antibacterial rates of titanium sheets in the blank group, control group, and experimental group were 0%, 21.65%, and 93.75%, respectively. The live/dead staining and CTC staining showed that the live bacteria on the surface of titanium plates in the blank group were the most, and the live bacteria on the surface of titanium plates in the experimental group were the least. (3) The results of live/dead staining and CCK-8 assay showed that the three groups of titanium sheets had good cytocompatibility, and the titanium sheets in the experimental group were more conducive to the proliferation of MC3T3-E1 cells. Active oxygen fluorescence probe detection exhibited that compared with the other two groups, the fluorescence intensity of active oxygen on the surface of the experimental group was significantly reduced. The results of alkaline phosphatase and alizarin red S staining showed that the osteogenic differentiation and extracellular matrix mineralization of MC3T3-E1 cells on the surface of titanium sheets in the experimental group were stronger than those in the other two groups. (4) These results show that the polyphenol-mediated copper ion coating has strong antibacterial and antioxidant properties and promotes osteogenic differentiation.

Key words: titanium, implants, antibacterial, antioxidant, polyphenol, copper ion, coating

中图分类号: