不同表面功能化纳米颗粒对介质细胞干细胞的影响
Zhihao Huang1, Zhongqi Zhou2, Qiaoyuan Ye3
1Department of Biology, College of Science, Shantou University, 515063 Shantou, Guangdong, China.
ACS applied bio materials
|May 3, 2024
概括
具有特定化学群体的纳米颗粒的表面功能化影响干细胞行为. 带正电荷的纳米粒子增强细胞吸收,而酸盐组促进骨组织工程应用.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 干细胞生物学 干细胞生物学
背景情况:
- 纳米粒子的物理化学特性影响细胞活动.
- 小化学组表面功能化对干细胞行为的影响还未得到充分研究.
研究的目的:
- 研究表面功能化纳米颗粒对大鼠骨髓中酶干细胞 (MSC) 的影响.
- 确定不同化学功能组如何影响纳米粒子内部化,细胞内贩运和MSC功能.
主要方法:
- 合成了具有各种化学组 (氨基,DETA,基,酸盐,硫酸盐) 的功能化无机纳米粒子.
- 用Rhodamine B标记的纳米颗粒来研究它们与MSCs的相互作用.
- 分析了细胞内化,内细胞通路,细胞毒性,actin细胞骨架,迁移和骨质生成.
主要成果:
- 带正电荷和短链功能化的纳米粒子显示出增强的MSC内部化和保留.
- 内细胞路径各不相同,负电荷纳米粒子利用 lysosomal exocytosis,正电荷纳米粒子经历内体逃生.
- 酸盐功能化纳米颗粒调高了骨质生成相关基因,并诱导了MSC中的骨质细胞样形态.
结论:
- 表面功能化极大地影响了纳米粒子-细胞相互作用和细胞内命运.
- 功能化纳米粒子具有较低的细胞毒性,对MSC细胞骨和迁移的影响最小.
- 酸功能化纳米颗粒显示出将MSC指向骨组织工程的潜力.
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