相关实验视频

Updated: Jul 19, 2026

Fabrication of Micropatterned Hydrogels for Neural Culture Systems using Dynamic Mask Projection Photolithography

Fabrication of Micropatterned Hydrogels for Neural Culture Systems using Dynamic Mask Projection Photolithography

Published on: February 11, 2011

通过光聚化诱导的相分离来引导细胞的微孔水凝

Monica Z Müller¹, Margherita Bernero¹, Chang Xie^1,2

¹Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.

Nature communications

|May 27, 2025

概括

研究人员使用光聚合诱导相分离 (PIPS) 开发了新的微孔水凝. 这种技术可以在3D细胞培养中控制毛孔形成,增强细胞生长和分化,用于组织工程应用.

科学领域:

生物材料科学生物材料科学
组织工程是组织工程.
聚合物化学聚合物化学

背景情况:

在3D细胞培养中,微孔支架对于溶液运输和细胞相互作用至关重要.
现有的材料在水性环境中缺乏空间时间控制的孔形成能力.
开发用于先进组织工程的教学性脚手架材料仍然是一个挑战.

研究的目的:

引入通过光聚合诱导相分离 (PIPS) 制造的细胞导向微孔水凝.
为了证明在3D细胞培养过程中控制孔径和孔隙形成的能力.
评估这些水凝在支持细胞活力,形态和分化方面的有效性.

主要方法:

使用离子聚合物 (norbornene-functionalized polyvinyl alcohol,德克斯硫酸盐),二硫醇链接剂和光启动剂来制备PIPS树脂.
光交叉连接以诱导相位分离和微孔形成.
通过控制光强度,聚合物组成和分子电荷来调节孔径大小 (2-40微米).

主要成果:

在现场实现,在活细胞的存在下以光控制的微孔形成.
通过RGD功能化的水凝,证明了高细胞活力 (>95%) 并支持细胞扩散和3D形态发生.
增强骨质分化,矩阵矿化,以及在人类介质细胞 stromal 细胞中的原分泌.

结论:

光聚合诱导相分离 (PIPS) 提供了一种创新的方法,用于制造细胞导向的微孔水凝.
这些PIPS水凝是3D细胞培养和复杂组织工程的有希望的教学性支架材料.
能够在现场控制毛孔形成的能力促进了再生医学的先进应用.

更多相关视频

Preparation of Hydroxy-PAAm Hydrogels for Decoupling the Effects of Mechanotransduction Cues

Preparation of Hydroxy-PAAm Hydrogels for Decoupling the Effects of Mechanotransduction Cues

Published on: August 28, 2014

An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components

An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components

Published on: July 18, 2018

相关概念视频

Overview Of Cell Separation And Isolation

Overview Of Cell Separation And Isolation

Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.