微流控
纳米技术
人脑
材料科学
类有机物
再生医学
诱导多能干细胞
海马结构
神经科学
干细胞
生物
胚胎干细胞
遗传学
生物化学
基因
作者
Yujuan Zhu,Xiaoxuan Zhang,Lingyu Sun,Yu Wang,Yuanjin Zhao
标识
DOI:10.1002/adma.202210083
摘要
Brain assembloids offer a highly promising strategy to model human brain development and disease, and advance potential studies in regenerative medicine, therapeutic screening, and drug discovery, while it is challenging to produce uniform brain organoids and assemble them flexibly by conventional methods. Here, a multidisciplinary engineered strategy to generate human brain assembloids with desired patterning based on microfluidic technology is presented. By encapsulating human induced pluripotent stem cells in microcapsules via microfluidic electrospray, brain region-specific organoids are efficiently formed, which are then introduced into a microfluidic chip consisting of a bottom layer with a micropillar array and a movable upper layer with a complementary microhole array. These brain organoids can settle into microholes and fuse into brain assembloids. As varied organoid microcapsules with designed 1D sequences or 2D arrays can be assembled into the vertical microholes, large coding amounts of fused brain assembloids with desired patterning can be produced. It is found that brain assembloids composed of cortical, hippocampal, and thalamic organoids can grow and function well, characterized with active neural migration and interaction. These features indicate that the suggested flexible, scalable, and controlled microfluidic systems are remarkably potential in wide applications of brain assembloids in neurological and biomedical fields.
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