操纵纳米颗粒聚合物调节巨细胞中的受体-连接体结合
Yuri Kim1, Hee Joon Jung2,3,4, Yunjung Lee5,6
1Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea.
Journal of the American Chemical Society
|March 11, 2022
概括
我们发现用磁纳米颗粒控制连接物可达性可以调节细胞粘附. 这一发现为治疗应用提供了新的细胞行为控制方法.
科学领域:
- 生物材料科学
- 细胞生物学
- 纳米技术
背景情况:
- 对细胞功能来说,受体与配体的相互作用至关重要.
- 连接物可访问性可以动态调节这些相互作用.
- 控制连接物可访问性是调节细胞行为的关键.
研究的目的:
- 调查"可访问的配体分散性"在受体-配体结合中的作用.
- 展示可调节的磁性纳米粒子聚合物的使用,以控制连接物可访问性.
- 探索受控连体可访问性对巨细胞粘附和极化的影响.
主要方法:
- 使用可调整尺寸的磁性纳米粒子聚合物,固定在RGD连接剂活性表面上.
- 在变化的聚合物大小 (聚合物分散性) 时保持恒定的可访问的配体密度.
- 使用磁性操纵可逆地改变连接物的可访问性.
- 在体外和体内评估了巨粘附和偏离.
主要成果:
- 通过促进整合素结合,增加聚合体大小 (较低的分散性) 增强了巨细胞的粘附性.
- 聚合物的磁性提升增加了连接体的可访问性,增加了巨细胞的附着性和治疗偏振.
- 聚合物的磁性降落降低了连接体的可访问性,抑制了结合并促进了炎症两极分化.
结论:
- 引入了"可访问的配体分散性"作为一种新的,调节受体-配体结合的基本参数.
- 通过对连接体可访问性的磁性操纵,证明了对细胞粘附和偏振的可逆控制.
- 突出了可调节纳米粒子聚合物的潜力,用于精确控制细胞反应.
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