Microfluidic platform for live cell imaging of 3D cultures with clone retrieval

Microfluidic platform for live cell imaging of 3D cultures with clone retrieval
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用于 3D 培养物活细胞成像和克隆检索的微流体平台

DOI:
10.1101/2020.02.17.952689
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发表时间:
2020
期刊:
--
影响因子:
--
通讯作者:
Mulas C
Mulas C
中科院分区:
--
文献类型:
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作者:
Mulas C

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将实时成像与检索感兴趣的单个细胞的能力相结合仍然是一项技术挑战。当研究高度动态或瞬时、异步或异质的细胞生物学和发育过程时,这些组合方法特别令人感兴趣。在这里,我们提出了一种通过液滴区室化将活细胞封装在3D水凝胶基质中的方法。使用一个小规模的屏幕,我们优化了矩阵条件的培养和小鼠胚胎干细胞(ES)的多系分化。此外,我们设计了一个定制的微流体平台,与实时成像兼容。利用该平台,我们能够仅通过培养基流保留或提取单个珠/液滴,从而避免了从平台酶促细胞去除的需要。我们表明,我们可以区分mES细胞,通过实时成像监测报告基因表达,并检索单个液滴进行功能测定,将报告基因表达与功能反应相关联。总的来说,我们提出了一个高度灵活的3D细胞封装和微流体平台,可以同时监测细胞动力学和检索分子和功能测定。
Combining live imaging with the ability to retrieve individual cells of interest remains a technical challenge. These combined methods are of particular interest when studying highly dynamic or transient, asynchronous or heterogeneous cell biological and developmental processes. Here we present a method to encapsulate live cells in a 3D hydrogel matrix, via droplet compartmentalisation. Using a small-scale screen, we optimised matrix conditions for the culture and multilineage differentiation of mouse embryonic stem (ES) cells. Moreover, we designed a custom microfluidic platform that is compatible with live imaging. With this platform we are able to retain or extract individual bead/droplets by media flow only, obviating the need for enzymatic cell removal from the platform. We show that we can differentiate mES cells, monitor reporter expression by live imaging, and retrieve individual droplets for functional assays, correlating reporter expression with functional response. Overall, we present a highly flexible 3D cell encapsulation and microfluidic platform that enables both monitoring of cellular dynamics and retrieval for molecular and functional assays.
小鼠胚胎干细胞无需基因操作即可分化为滋养外胚层
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