具有高BPA负载的双功能纳米脂酶用于质母细胞瘤的向MRI引导BNCT
Yaxin Qin1, Xiaoyan Sun1, Zhicheng Zhang2
1Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, PR China.
ACS applied materials & interfaces
|September 6, 2025
概括
这项研究引入了一种新的加多-脂纳米载体,用于质母细胞瘤中增强的中子捕获疗法 (BNCT). 该系统改善了瘤向和可视化,导致临床前模型的存活率增加.
科学领域:
- 纳米医学
- 放射治疗
- 分子成像
背景情况:
- 质母细胞瘤是一种致命的脑瘤,
- 中子捕获疗法 (BNCT) 是有前途的,但需要提高的输送和可视化.
- 目前的BNCT面临着瘤向和体内成像缺乏的挑战.
研究的目的:
- 开发一种新的加多-集成脂质纳米载体,用于向输送和MRI引导的BNCT.
- 通过使用Angiopep-2修饰来增强血脑屏障的透性和质瘤向性.
- 评估纳米载体在质母细胞瘤治疗和诊断整合中的有效性.
主要方法:
- 通过微流体将BPA-F (剂) 和DOTA-Gd (MRI对比剂) 染成脂质纳米载体.
- 用Angiopep-2进行表面修饰,以加强瘤向和BBB透.
- 在体外细胞吸收研究,细胞亡测定和DNA损伤评估.
- 在体内研究,以评估瘤积累,生物分布和存活率.
- 在体外和体内MRI验证成像能力.
主要成果:
- 开发的纳米载体 (BPA-F&DOTA-Gd@LIPO-ANG) 显示在质瘤细胞中增加了的积累.
- 在中子辐射后的癌细胞中观察到显著的亡和DNA损伤.
- 在体内研究显示瘤选择性积累和瘤与正常组织的比率有所改善.
- MRI验证证实了纳米载体在体内可视化的能力.
- 在接受治疗的带有质瘤的小鼠中实现了显著的生存延长.
结论:
- 加多-集成脂质纳米载体是BNCT中向输送的一个有希望的系统.
- 修改 angiopep-2 增强了质瘤的向性和 BBB 透性.
- 这种纳米载体可实现MRI引导的BNCT,整合诊断和治疗.
- 这种方法为质母细胞瘤治疗提供了潜在的新策略.
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