纳米启用双响应药物载体起源于乙化德克斯/碳氧化纳米纤维素基核心微球
Aiswarya Thattaru Thodikayil1, Hemlata Hemlata2, Nandan Murali3
1Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
ACS biomaterials science & engineering
|January 16, 2026
概括
这项研究介绍了可生物降解的磁光反应微球,用于向药物输送. 该系统使用紫外线和磁场进行控制释放,显示高效率和瘤选择性,毒性最小.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 药物输送系统 药物输送系统
背景情况:
- 有针对性的药物输送系统需要精确的外部控制,以提高有效性并最大限度地减少副作用.
- 磁光感应材料提供双刺激控制,但在实现精确触发和避免光毒性方面面临挑战.
研究的目的:
- 开发可生物降解的核心外微球,具有磁光反应性质,用于增强,外部触发的药物输送.
- 研究磁场和紫外线对药物释放动力学和瘤细胞向的协同作用.
主要方法:
- 生物降解的核心外微球的制造从乙德克斯 (AcD) 和酸修饰纤维素 (CMC).
- 微球与光酸发生器 (PAG),Fe3O4纳米粒子和零价铁 (ZVI) 共同加载,用于双刺激反应.
- 在联合紫外线和交替磁场 (AMF) 刺激下评估药物释放特征 (黄素,多克索鲁比辛).
- 使用HEK293细胞评估细胞相容性和对HepG2和MCF-7癌症模型的抗癌疗效.
主要成果:
- 双刺激 (UV + AMF) 协同增强光酸生成,并触发药物快速释放 (在45-60分钟内约98%).
- 在健康的HEK293细胞中观察到最小的毒性,而装有多克索鲁比的微球显著降低了HepG2细胞活力 (在24小时后~14%).
- 在21天内,3D MCF-7球体的显著分解和酸酶活性降低 (∼41%),表明瘤选择性疗效.
结论:
- 开发了一种可编程,可生物降解的磁光反应微球系统,用于高效,外部控制的药物输送.
- 证明了协同双刺激触发的潜力,以实现快速和局部的药物释放.
- 强调了该系统对下一代局部化疗的承诺,增强了瘤选择性和减少了全身毒性.
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