Fe3O4 nanoparticles enhance the sonodynamic therapy effect of chlorin e6 on glioma U251 cells
DOI:10.3872/j.issn.1007-385x.2021.07.008
- VernacularTitle:四氧化三铁纳米粒子增强二氢卟吩e6对胶质瘤U251细胞的声动力治疗效果
- Author:
ZHANG Peng
1
,
2
;
CHEN Zihan
3
;
REN Zhongyu
1
,
2
;
CHEN Jianjiao
1
,
4
;
CHEN Hanren
1
,
4
;
WEN Jian
1
,
2
Author Information
1. 1a. School of Clinical Medicine
2. 1b. Department of Neurology, the Affiliated Hospital of Guilin Medical College, Guilin 541040, Guangxi, China
3. 2. Department of Pathology, the Second Affiliated Hospital of Guilin Medical College, Guilin 541199, Guangxi, China
4. the Affiliated Hospital of Guilin Medical College, Guilin 541040, Guangxi, China
- Publication Type:Journal Article
- Keywords:
胶质瘤;U251细胞;四氧化三铁纳米粒子;二氢卟吩e6;声动力疗法;活性氧
- From:
Chinese Journal of Cancer Biotherapy
2021;28(7):702-708
- CountryChina
- Language:Chinese
-
Abstract:
[摘 要] 目的:探讨四氧化三铁(Fe3O4)纳米粒子(PION)作为药物载体增强二氢卟吩e6(chlorin e6,Ce6)在胶质瘤中的增效作用。方法:采用高温降解法和相转移法制备PEG-Fe3O4@Ce6复合纳米粒子(PION@E6),用水合粒径分析、透射电镜、胶体稳定性分析、紫外可见光吸收光谱等方法对PION@E6进行鉴定。CCK-8法检测胶质瘤U251细胞的增殖活性,流式细胞术检测细胞的凋亡水平,DCFH-DA探针法检测细胞中活性氧(reactive oxygen species,ROS)的水平。构建BALB/c-nu裸鼠胶质瘤U251细胞移植瘤模型,动物活体荧光成像术及磁共振成像(MRI)观察PION@E6及Ce6在移植瘤中的潴留时间,比较PION@E6声动力治疗组及Ce6声动力治疗组的第28天生存情况及肿瘤体积。结果:PION@E6的核心粒径为10 nm、水合粒径为(37.86±12.90)nm,具有良好的水溶性和稳定性;吸收光谱及XRD图谱显示Ce6已经负载到Fe3O4纳米粒子上。与Ce6声动力组比较,PION@E6声动力组U251细胞的增殖活性显著下降(P<0.05),细胞凋亡率显著升高(均P<0.05),细胞中ROS水平显著升高(P<0.05)。荷瘤裸鼠胶质瘤U251细胞移植瘤治疗实验结果显示,与Ce6声动力治疗组比较,PION@E6声动力治疗组裸鼠移植瘤组织中潴留时间显著延长(P<0.05),存活的裸鼠数显著增多,移植瘤体积显著缩小(P<0.01)。结论:Fe3O4纳米粒子对Ce6介导的胶质瘤U251细胞声动力治疗具有明显的增效作用。
- Full text:20210708.pdf