双滚动圆放大产生物理交叉链接的DNA网络用于干细胞捕捞
Chi Yao1, Han Tang1, Weijian Wu1
1Frontier Science Center for Synthetic Biology, Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology , Tianjin University , Tianjin 300350 , People's Republic of China.
Journal of the American Chemical Society
|January 2, 2020
概括
这项研究引入了一种新型的DNA网络策略,以有效地分离骨髓介质干细胞 (BMSC). 该方法可实现有针对性的捕获,3D细胞培养和酶触发释放,从而保持细胞活性.
科学领域:
- 生物技术
- 生物材料科学
- 细胞生物学
背景情况:
- 干细胞研究对于细胞生物学和治疗至关重要.
- 从骨髓中分离干细胞是具有挑战性的,因为它们的数量很少.
研究的目的:
- 开发一种有效的捕获,培养和释放骨髓介质干细胞 (BMSC) 的方法.
- 克服骨髓样本中干细胞含量低的挑战.
主要方法:
- 使用双滚圆放大方法构建了一个物理交叉链接的DNA网络.
- 用于特定的BMSC anchoring,使用了带有aptamer序列的DNA链.
- 通过DNA链的混合,形成了细胞包裹和分离的3D网络.
- 核酶消化用于酶触发的细胞释放.
主要成果:
- 通过DNA网络策略实现了BMSC的有效捕获和3D包裹.
- 物理交叉链接的DNA网络为3D细胞培养提供了有利的微环境,而不会造成细胞损伤.
- 使用核酶触发的释放维持了分离的BMSC的活性.
结论:
- 开发的基于DNA网络的策略为从骨髓等复杂的生物样本中分离BMSC提供了强大而有效的方法.
- 这种方法促进干细胞分离和培养,保持细胞活力和功能.
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