糖原负载光敏剂用于肿瘤光动力治疗的研究
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1.江南大学生命科学与健康工程学院,江苏 无锡 214122;2.江南大学生物工程学院,江苏 无锡 214122

作者简介:

通讯作者:

陈敬华(1971—),男,博士,教授,博士研究生导师,主要从事药剂学及生物医用高分子材料研究。 E-mail: chenjinghua@jiangnan.edu.cn

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基金项目:

国家自然科学基金青年基金项目(21907041);国家“十四五”重点研发计划项目(2021YFC2103100)。


Photosensitizer-loaded Glycogen for Photodynamic Therapy of Tumor
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1.School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China;2.School of Biotechnology, Jiangnan University, Wuxi 214122, China

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    摘要:

    【目的】合成用于负载光敏剂TTVBA的氨基化糖原(NG)载体,构建肿瘤光动力治疗(PDT)纳米药物递送系统(NGT NPs)。 【方法】通过二乙烯三胺(DETA)修饰糖原,合成带正电荷的NG,并基于静电作用负载光敏剂TTVBA制备NGT NPs。运用红外光谱、动态光散射(DLS)、透射电镜(TEM)等对纳米粒子进行结构表征,通过溶血试验评估生物相容性,利用DCFH-DA探针检测活性氧(ROS)生成能力,并采用CCK-8法和AM/PI染色评价其体外抗肿瘤活性。 【结果】NGT NPs呈规则球形,粒径为104.8 nm,表面电位为23.83 mV。光照条件下,20 μg/mL NGT NPs产生的ROS水平是黑暗条件下的12倍,且溶血率低于0.41%,表明其具有良好的生物相容性。在B16细胞试验中,光照处理的NGT NPs组ROS水平极其显著升高( P<0.001);随着NGT NPs质量浓度的升高,细胞存活率逐渐下降;AM/PI染色结果显示,光照组细胞死亡数量明显多于对照组。 【结论】NGT NPs具有良好的生物相容性、光响应ROS生成能力及抗肿瘤活性,为肿瘤PDT提供了一种新型高效的纳米载体策略。

    Abstract:

    [Objective] The aim of this study is to synthesize aminated glycogen (NG) for loading of the photosensitizer TTVBA and construct a nano drug delivery system (NGT NPs) for photodynamic therapy (PDT) of tumors. [Method] Positively charged NG was synthesized through modification of glycogen with diethylenetriamine (DETA). Then, TTVBA was encapsulated by NG via electrostatic interaction to prepare NGT NPs. The prepared NGT NPs were characterized by infrared spectroscopy, dynamic light scattering (DLS), and transmission electron microscopy (TEM). The hemolysis assay was performed to evaluate the biocompatibility of NGT NPs. The reactive oxygen species (ROS) generation capability of cells treated with NGT NPs was detected with the DCFH-DA probe. The in vitro antitumor activity of NGT NPs was assessed by the CCK-8 assay and AM/PI staining. [Result] NGT NPs were spherical, with the diameter of 104.8 nm and the surface potential of 23.83 mV. The ROS generated by the cells treated with NGT NPs (20 μg/mL) under light was 12 folds of that in the dark. The NGT NPs group possessed a hemolysis rate below 0.41%, which indicated excellent biocompatibility. In B16 cells under light, NGT NPs raised the ROS level ( P<0.001) while reducing the cell survival rate in a mass concentration-dependent manner. AM/PI staining showed more cell death in the light group than in the control group. [Conclusion] NGT NPs possessed good biocompatibility, light-responsive induction of ROS generation, and antitumor activity. This work provides a novel and efficient nanocarrier for the PDT of tumors.

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引用本文

马可可,方久锐,张慧杰,陈敬华.糖原负载光敏剂用于肿瘤光动力治疗的研究[J].食品与生物技术学报,2025,(6):50-58.

MA Keke, FANG Jiurui, ZHANG Huijie, CHEN Jinghua. Photosensitizer-loaded Glycogen for Photodynamic Therapy of Tumor[J]. Journal of Food Science and Biotechnology,2025,(6):50-58.

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  • 收稿日期:2023-03-19
  • 最后修改日期:2023-04-20
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  • 在线发布日期: 2025-10-11
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