声动力学和声力学对细胞干和细胞外物理化学环境的影响,以增强化疗效
Danli Sheng1,2, Tianzhi Liu3,4, Lang Qian1,2
1Department of Medical Ultrasound, Fudan University Shanghai Cancer Center, Shanghai, 200032, People's Republic of China.
Journal of nanobiotechnology
|June 21, 2024
概括
这项研究引入了对超声响应的纳米滴来增强低氧激活前药物 (HAP) 输送. 这种纳米技术提高了药物透率和疗效,同时也减少了癌症干细胞的特性.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 在瘤学瘤学.
背景情况:
- 低氧激活前期药物 (HAP) 提供瘤特异化疗,但由于瘤异质性和耐药性而面临挑战.
- 密的瘤细胞外基质 (ECM) 和不同氧气水平限制了HAP的疗效.
研究的目的:
- 开发一个超声响应的纳米滴体系统,以增强HAP的疗效.
- 克服固体瘤内HAP传递和激活的障碍.
主要方法:
- 一个新的纳米滴 (PTP@PLGA) 被设计出来,它结合了原氨酸 (PpIX), perfluoropropane (PFP) 和tirapazamine (TPZ).
- 超声波辐射被用来触发PFP蒸发,增强ECM透和PpIX的声动力学激活.
- 研究了超声波对瘤微环境和癌症干细胞种群的影响.
主要成果:
- 超声波诱导的PFP蒸发通过放松ECM改善了TPZ透到缺氧瘤区域.
- 来自PpIX的声动力学效应进一步降低了氧气水平,在低氧和正常氧区域激活了TPZ.
- 超声波治疗令人惊地降低了癌症干细胞的干度,这是药物耐药性的因素.
结论:
- 超声响应的纳米滴是强化HAP化疗的有效策略.
- 声学刺激显示了向癌症干细胞和克服药物耐药性的潜力.
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