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Updated: Sep 13, 2025

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纳米载体纳米力学:在癌细胞中解锁内细胞形成的关键 导航上皮层-半机体过渡动力学
Yuanhao Zhang1,2, Miaomiao Zhang3, Jinyao Zheng1,2
1State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
ACS nano
|July 29, 2025
概括
较硬的纳米颗粒更好地被瘤细胞内部化,这些瘤细胞正在经历上皮层-介质细胞过渡 (EMT). 这种增强的纳米载体的细胞吸收改善了药物输送和癌症治疗的有效性.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 癌症生物学 癌症生物学
背景情况:
- 纳米载体的细胞内化受纳米载体力学和瘤细胞机械感知的影响.
- 表皮-介质细胞过渡 (EMT) 增强了瘤细胞的侵入性,但其对机械感知和药物输送的影响尚不清楚.
研究的目的:
- 研究EMT如何影响瘤细胞机械感知.
- 探索纳米载体机械特性对EMT阶段瘤细胞细胞内化的影响.
- 为EMT阶段瘤开发一种基于机械的纳米载体工程策略.
主要方法:
- 合成的奇托桑纳米粒子 (CSNPs) 具有不同的扬模 (0.32518.25 MPa).
- 在不同EMT阶段评估CSNP在瘤细胞中的细胞内化.
- 分析了整合蛋白,p-FAK和F-actin的表达.
- 将多克索鲁比辛 (DOX) 加载到CSNP (DOX-CSNP) 中,并评估它们的抑制作用.
主要成果:
- 随着EMT的进展,瘤细胞的内部化能力因整蛋白表达升高而增强.
- 较硬的CSNP在瘤细胞中表现出更大的内部化.
- 集成蛋白感应较硬的CSNP上调调节了p-FAK,促进了F-actin的聚合和内部化.
- 较硬的DOX-CSNP表现出更高的抑制能力,在介质细胞表型瘤细胞中效果最大.
结论:
- 纳米载体的机械特性显著影响EMT阶段瘤细胞中的细胞内化.
- 瘤细胞机械感知,由EMT调节,决定纳米载体的吸收.
- 纳米载体的机械调整为改善EMT相关癌症的药物输送提供了一个有希望的策略.
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