高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (1): 20240249.doi: 10.7503/cjcu20240249

• 研究论文 • 上一篇    下一篇

载锌/相转变溶菌酶中空介孔二氧化硅纳米粒子的制备及在牙本质小管封闭中的应用

杨庆祎1,2, 赵玉平1,2, 郑文茜2, 王端1,2, 孙宏晨2, 周鼎2(), 徐晓薇1,2()   

  1. 1.吉林大学口腔医院牙周科
    2.吉林省牙发育及颌骨重塑与再生重点实验室, 长春 130021
  • 收稿日期:2024-05-22 出版日期:2025-01-10 发布日期:2024-07-15
  • 通讯作者: 周鼎,徐晓薇 E-mail:zhouding@jlu.edu.cn;xiaoweixu@jlu.edu.cn
  • 基金资助:
    国家重点研发计划青年科学家项目(2022YFA1105800);国家自然科学基金(62075215)

Preparation of Hollow Mesoporous Silica Nanoparticles Carrying Zinc/PTL and Their Application in Dentinal Tubule Occlusion

YANG Qingyi1,2, ZHAO Yuping1,2, ZHENG Wenqian2, WANG Duan1,2, SUN Hongchen2, ZHOU Ding2(), XU Xiaowei1,2()   

  1. 1.Department of Periodontology
    2.Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling,School and Hospital of Stomatology,Jilin University,Changchun 130021,China
  • Received:2024-05-22 Online:2025-01-10 Published:2024-07-15
  • Contact: ZHOU Ding, XU Xiaowei E-mail:zhouding@jlu.edu.cn;xiaoweixu@jlu.edu.cn
  • Supported by:
    the National Key Research and Development Program for Young Scientists, China(2022YFA1105800);the National Natural Science Foundation of China(62075215)

摘要:

开发了一种新型牙本质小管封闭材料, 其具有锌的抗菌性、 相转变溶菌酶(PTL)的表面黏附性和中空介孔二氧化硅(HMSN)的可搭载药物特性. 首先, 利用硬模板法和选择性刻蚀法, 以硅酸四乙酯为硅源制备了HMSN; 通过HMSN表面负电荷的静电作用吸附Zn2+, 制得Zn2+@HMSN; 随后, 使用PTL包覆Zn2+@HMSN, 获得了具有抗菌性和黏附性的Zn2+/PTL@HMSN复合材料. Zn2+/PTL@HMSN不仅具有优异的生物相容性, 可严密封闭牙本质小管, 还具有良好的耐酸耐磨稳定性; 并且Zn2+/PTL@HMSN可有效抑制变异链球菌的黏附, 在治疗牙本质敏感方面具有良好的应用潜力.

关键词: 中空介孔二氧化硅, 相转变溶菌酶, 牙本质敏感症, 牙本质小管, 抗菌性

Abstract:

This study developed a novel dentinal tubule sealant material that combines the antibacterial properties of zinc, the surface adhesivity of phase-transitioned lysozyme(PTL), and the drug-loading capabilities of hollow mesoporous silica(HMSN). Initially, HMSN were synthesized using the hard templating method and selective etching, with tetraethyl orthosilicate as the silica source. The negatively charged surfaces of HMSN adsorbed Zn2+ ions through electrostatic attraction, forming Zn2+@HMSN. Subsequently, Zn2+@HMSN was encapsulated with PTL, resulting in Zn2+/PTL@HMSN composite material which exhibited antibacterial activity and enhanced adhesion. Zn2+/PTL@HMSN not only exhibited outstanding biocompatibility which could seal dentinal tubules effectively, but also demonstrated robust resistance to acid and wear. Zn2+/PTL@HMSN significantly inhibited the adhesion of streptococcus mutans, underscoring its great potential for treating dentinal hypersensitivity.

Key words: Hollow mesoporous silica, Phase-transitioned lysozyme, Dentinal hypersensitivity, Dentinal tubule, Antibacterial property

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