激光生物学报, 2017, 26 (1): 30, 网络出版: 2017-04-10   

基于叶酸修饰的S-TiO2的PDT体外灭活HL60细胞实验研究

An Experimental Study on the Photocatalytic Inactivation of HL60 Cells in vitro Based on Sulfur-doped Titanium Dioxide Modified Folic Acid
作者单位
1 广东省量子调控与材料重点实验室, 华南师范大学物理与电信工程学院, 广东 广州 510006
2 广东工业大学物理与光电工程学院, 广东 广州 510006
摘要
文章主要研究叶酸修饰硫掺杂二氧化钛(FA-S-TiO2)纳米颗粒光催化灭活作用并初步探讨FA-S-TiO2增强了TiO2光催化灭活效率的作用机理。利用固相反应的方法制备了S-TiO2, 并利用表面修饰的方法制备了FA-S-TiO2。通过紫外-可见光吸收光谱(UV-Vis),荧光光谱, 傅里叶红外光谱(FTIR), 透射电镜(TEM)等手段对样品进行了表征。利用Cell Counting Kit-8(CCK-8)法分别检测TiO2、S-TiO2、FA-S-TiO2对HL60细胞的灭活效应, 并采用活性氧检测等方法进行了分析研究。细胞实验结果表明, 在暗室条件下, 随着叶酸修饰S-TiO2的比例增加, 细胞的存活率随之减少; 在光照条件下, 细胞的存活率明显下降。其中FA-S-TiO2样品1对HL60细胞的灭活效率最高, 达到72%。其相应的活性氧含量也是最高。同时, 通过荧光光谱推测FA-S-TiO2提高HL60细胞对该纳米颗粒摄取效率, 进而增强PDT灭活效果。
Abstract
The photocatalytic inactivation efficiency of HL60 cells in vitro based on sulfur-doped titanium dioxide modified folic acid (FA-S-TiO2) and its mechanism were researched in this paper. FA-S-TiO2 nanoparticles were synthesized by solid-phase reaction and surface modification method and were characterized by ultraviolet-visible absorption (UV-Vis), fluorescence spectra, fourier transformation infrared spectrum (FTIR), transmission electron microscope (TEM) and so on. The photocatalytic inactivation of these nanoparticles on HL60 cells was analyzed by CCK-8 assay and its mechanism was investigated using reactive oxygen species (ROS) detection. The results of cell experiment in the darkroom conditions showed that the viability of cells was reduced with the increment of FA. However, under the light exposure conditions, especially, FA-S-TiO2 sample 1 showed the highest cell inactivated efficiency of 72%, and the fluorescence intensity of the reactive oxygen species was the strongest. Meanwhile, the fluorescence spectra indicated that FA-S-TiO2 may improve the photocatalytic inactivation by improving uptake efficiency of nanoparticles.

符秋伟, 梁雪影, 薛婷, 陈丽, 艾保全, 熊建文. 基于叶酸修饰的S-TiO2的PDT体外灭活HL60细胞实验研究[J]. 激光生物学报, 2017, 26(1): 30. FU Qiuwei, LIANG Xueying, XUE Ting, CHEN Li, AI Baoquan, XIONG Jianwen. An Experimental Study on the Photocatalytic Inactivation of HL60 Cells in vitro Based on Sulfur-doped Titanium Dioxide Modified Folic Acid[J]. Acta Laser Biology Sinica, 2017, 26(1): 30.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!