碳纳米管诱导人类骨水泥母细胞矿化

IF 3.5 2区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE
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引用次数: 0

摘要

简介碳纳米管(CNT)是碳的同素异形体之一,具有独特的性质。据报道,碳纳米管具有良好的骨组织相容性,可诱导骨生成,是一种应用广泛的理想材料。然而,含 CNT 的材料对根尖牙周组织愈合的治疗效果尚不清楚。本研究旨在阐明 CNT 对人骨水泥母细胞系(HCEM)增殖和矿化的影响:方法:CNT 刺激 HCEM 细胞 24-72 小时后进行 MTS 检测,评估其增殖情况。第 7 天和第 10 天通过茜素红 S 染色评估钙沉积水平,第 3、7 和 10 天通过实时定量 PCR 检测矿化相关基因的表达。第 14 天,使用扫描电子显微镜观察含有 CNT 的培养物:结果:CNT 对 HCEM 细胞增殖无细胞毒性。用矿化培养基处理后,CNT 在第 7 天诱导 HCEM 矿化,并在第 7 天和第 14 天增加钙沉积。在整个实验期间,CNT 显著增加了碱性磷酸酶的 mRNA 表达,并在第 3 天显著增加了骨硅蛋白的 mRNA 表达。而 I 型胶原的 mRNA 表达没有受到影响。第 14 天观察到 CNT 附着在细胞表面:CNT能促进HCEM细胞的矿化,这表明它有可能通过调节骨水泥母细胞的矿化,成为牙根尖牙周组织再生材料的一种新的生物活性成分。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Carbon Nanotubes Induce Mineralization of Human Cementoblasts

Introduction

Carbon nanotubes (CNT) are 1 of the allotropes of carbon with unique properties. CNT shows good bone-tissue compatibility and has been reported to induce osteogenesis; therefore, it is regarded as an ideal material in a wide range of applications. However, the therapeutic effect of CNT-containing materials in the healing of apical periodontal tissue is unknown. The purpose of this study was to clarify the effect of CNT on the proliferation and mineralization of the human cementoblast cell line (HCEM).

Methods

The proliferation of HCEM cells with CNT stimulation was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay performed from 24–72 hours. Calcium deposition levels were evaluated by alizarin red S staining on days 7 and 10, and mineralization-related gene expression was examined by quantitative real-time polymerase chain reaction on days 3, 7, and 10. Scanning electron microscopy was used to observe the culture with CNT on day 14.

Results

CNT showed no cytotoxicity to HCEM cell proliferation. Treatment was performed with mineralization medium, CNT-induced HCEM mineralization on day 7, and increased calcium deposition on days 7 and 14. Messenger RNA expression of alkaline phosphatase was significantly increased throughout the experimental period, and bone sialoprotein was significantly increased on day 3 by CNT, whereas no effect was found on mRNA expression of type I collagen. CNT was observed in attachment to the cell surface on day 14.

Conclusions

CNT promotes the mineralization of HCEM cells, indicating the potential as a new bioactive component for apical periodontal tissue regeneration materials through the regulation of cementoblast mineralization.

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来源期刊
Journal of endodontics
Journal of endodontics 医学-牙科与口腔外科
CiteScore
8.80
自引率
9.50%
发文量
224
审稿时长
42 days
期刊介绍: The Journal of Endodontics, the official journal of the American Association of Endodontists, publishes scientific articles, case reports and comparison studies evaluating materials and methods of pulp conservation and endodontic treatment. Endodontists and general dentists can learn about new concepts in root canal treatment and the latest advances in techniques and instrumentation in the one journal that helps them keep pace with rapid changes in this field.
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