当揭示微芯片几何学对巨细胞相互作用和代谢反应的影响时,立方体占主导地位
Gordon Bruce1, Saman Bagherpour2,3, Marta Duch4
1Division of Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K.
ACS biomaterials science & engineering
|August 21, 2024
概括
颗粒形状显著影响药物输送. 立方形微芯片显示巨细胞的细胞吸收率较高,表明有针对性治疗的潜力,而其他形状可能会逃避免疫细胞,表明量身定制的输送策略.
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:
- 药物输送系统通常使用纳米和微型载体,但在优化其治疗疗效和可用性方面仍然存在挑战.
- 粒子形状是影响载体生物分布和向的关键因素,为增强血管和细胞输送提供了机会.
- 多晶微制造为药物输送应用提供了对颗粒大小和形状的多功能控制.
研究的目的:
- 研究微芯片粒子形状对细胞相互作用的影响,特别是对巨细胞的影响.
- 探索不同形状的微芯片作为有针对性的药物输送载体的潜力.
- 评估生物相容性和细胞对微芯片-颗粒-巨细胞相互作用的反应.
主要方法:
- 光刻法被用来制造各种形状的多微芯片 (立方体,立方体,条,圆柱体).
- 侧散成像流细胞计分析了无标签微芯片与RAW 264.7巨细胞的相互作用.
- 细胞关联,摄取和巨细胞代谢活动在不同的微芯片剂量下得到量化.
主要成果:
- 立方体微芯片显示出最高的细胞关联 (约. 25%) 和吸收 (大约. 20%) 通过巨细胞.
- 圆柱形和条形微芯片的吸收率显著降低 (约为1. 分别为8%和6%),这表明免疫规避的可能性.
- 巨细胞在对微芯片的反应中表现出较高的代谢活性,细胞内酶释放水平较低,表明毒性最小.
结论:
- 微芯片的形状是影响细胞吸收和相互作用的关键参数,立方体对巨细胞向特别有效.
- 非立方体形状的形状可能在逃避巨细胞识别方面具有优势,从而使替代药物输送策略成为可能.
- 该研究强调了精确设计的微芯片作为多功能载体的潜力,用于定向药物输送,具有有利的生物相容性.
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