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首页> 外文期刊>Dental Materials Journal >Toxicity of functionalized multi-walled carbon nanotubes on bone mesenchymal stem cell in rats
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Toxicity of functionalized multi-walled carbon nanotubes on bone mesenchymal stem cell in rats

机译:功能化多壁碳纳米管对大鼠骨间充质干细胞的毒性

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摘要

Carbon nanotubes (CNTs) are promising biomaterials in the medical field, especially in tissue engineering of bone. However, the use of CNTs is largely confined by its unfavorable solubility and toxicity. To improve solubility and biocompatibility of CNTs, functionalization has been proven to be an effective strategy. Although various functionalized CNTs have been extensively studied, only few CNTs have the desired qualities. We compared the toxicity of several promising functionalized multi-walled carbon nanotubes (MWCNTs) on rat bone-marrow derived stem cells (BMSCs). Cell experiments showed that while acid oxidation (AO)-MWCNTs and Raw-MWCNTs exhibited significant toxicity on BMSCs, polyethylene glycols (PEG)-MWCNTs and hydroxyapatit (HA)-MWCNTs had favorable biocompatibility and a trivial effect on BMSCs. Possible mechanisms for the cytotoxicity on BMSCs included mitochondrisome and deoxyribonucleic acid damage, increased oxidative stress and damaging of cellular membranes. Our data indicated that PEG-MWCNTs and HA-MWCNTs may be promising materials for bio-related applications.
机译:碳纳米管(CNTs)在医学领域,尤其是在骨骼的组织工程中,是有前途的生物材料。然而,CNT的使用在很大程度上受到其不利的溶解性和毒性的限制。为了提高CNT的溶解度和生物相容性,功能化已被证明是一种有效的策略。尽管已经对各种功能化的CNT进行了广泛的研究,但只有少数CNT具有所需的质量。我们比较了几种有希望的功能化多壁碳纳米管(MWCNTs)对大鼠骨髓衍生干细胞(BMSCs)的毒性。细胞实验表明,虽然酸氧化(AO)-MWCNTs和Raw-MWCNTs对BMSCs表现出显着的毒性,但是聚乙二醇(PEG)-MWCNTs和羟基磷灰石(HA)-MWCNTs具有良好的生物相容性,并且对BMSCs具有微不足道的作用。 BMSCs细胞毒性的可能机制包括线粒体和脱氧核糖核酸损伤,氧化应激增加和细胞膜损伤。我们的数据表明,PEG-MWCNT和HA-MWCNT可能是有前途的生物相关应用材料。

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