实用医学杂志 ›› 2022, Vol. 38 ›› Issue (5): 627-632.doi: 10.3969/j.issn.1006⁃5725.2022.05.020

• 新技术新方法 • 上一篇    下一篇

阳离子脂质体载药系统的制备及其体外成像治疗一体化应用研究

罗婷婷 潘炜伦 涂嫣红 李博 郑磊   

  1. 南方医科大学南方医院检验科(广州 510515)

  • 出版日期:2022-03-10 发布日期:2022-03-10
  • 通讯作者: 郑磊 E⁃mail:nfyyzl@163.com
  • 基金资助:
    国家杰出青年科学基金(编号:82025024)

Imaging and therapeutic platform of cancer cells with cationic liposome

LUO Tingting,PAN Weilun,TU Yanhong,LI Bo,ZHENG Lei.   

  1. Department of Laboratory,Nanfang Hospital,Southern Medical University,Guang⁃ zhou 510515,China

  • Online:2022-03-10 Published:2022-03-10
  • Contact: ZHENG Lei E⁃mail:nfyyzl@163.com

摘要:

目的 构建阳离子脂质体⁃阿霉素纳米复合物(CLPs⁃DOX)并将其应用于癌细胞成像及治疗 一体化研究。方法 本实验拟采用薄膜分散一锅法合成 CLPs⁃DOX;利用电位分析仪、荧光分析仪、纳米颗粒追踪技术、荧光显微技术分析 CLPs⁃DOX 的电位、荧光强度、粒径分布和癌细胞的成像效果;细胞毒性试验验证 CLPs⁃DOX 对乳腺癌细胞的杀伤效能。结果 薄膜分散一锅法合成 CLPs⁃DOX 效率较高,DOX 装载于 CLPs 的荧光响应值在 Triton X⁃100 处理裂解后升高;DOX CLPs⁃DOX 的荧光峰值均在 590 nm;当 CLPs⁃DOX 量为 1 × 108 个时,癌细胞死亡率达 80%;CLPs⁃DOX 能够高效进入乳腺癌 MDA⁃MB⁃231 细胞中并呈现出红色荧光。结论 通过薄膜分散一锅法合成了粒径分布良好、稳定性强、装载率高的 CLPs⁃DOX 合物,具有高效杀伤乳腺癌MDA⁃MB⁃231细胞和细胞成像的功能,为临床药物成像和治疗提供思路。

关键词:

乳腺癌,  , 成像,  , 治疗,  , 阳离子脂质体,  , 阿霉素

Abstract:

Objective The aim of this study was to construct cationic liposome based CLPs⁃DOX platform for cancer therapy and imaging. Methods In this experiment,CLPs⁃DOX was synthesized by thin film dispersion method. Zeta potential,size distribution and fluorescence of CLPs⁃DOX were analyzed by potentiometric analyzer fluorescence analyzer,nanoparticle tracking technology. The imaging effect,cytotoxicity of CLPs ⁃DOX on breast cancer cells MDA⁃MB⁃231 were also investigated by fluorescence microscopy,confocal microscopy and CCK⁃8 assay. Results DOX encapsulated efficiency of one ⁃pot synthesis method was higher than two ⁃step method. The fluorescence response value of DOX loaded on CLPs increased after Triton X⁃100 treatment. The fluorescence peaks of DOX and CLPs⁃DOX were both 590 nm. Cancer cells mortality rate increased to 20% in the addition of 1 × 108 particles CLPs⁃DOX. CLPs⁃DOX showed a good imaging effect in breast cancer cells MDA⁃MB⁃ 231. Conclusion The synthesized CLPs⁃DOX exhibits desirable cytotoxicity and imaging capacity with uniform size distribution and high loading efficiency,paving the way to clinical practice.

Key words:

breast cancer, imaging, treatment, cationic liposome, doxorubicin