Abstract
Single cell trapping in vitro by microfluidic device is an emerging approach for the study of the relationship between single cells and their dynamic biochemical microenvironments. In this paper, a hydrodynamic-based microfluidic device for single cell trapping is designed using a combination of stagnation point flow and physical barrier. The microfluidic device overcomes the weakness of the traditional ones, which have been only based upon either stagnation point flows or physical barriers, and can conveniently load dynamic biochemical signals to the trapped cell. In addition, it can connect with a programmable syringe pump and a microscope to constitute an integrated experimental system. It is experimentally verified that the microfluidic system can trap single cells in vitro even under flow disturbance and conveniently load biochemical signals to the trapped cell. The designed micro-device would provide a simple yet effective experimental platform for further study of the interactions between single cells and their microenvironments.
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The project was supported by the National Natural Science Foundation of China (Grants 11172060 and 31370948).
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Miao Yu and Zongzheng Chen contributed equally to this work.
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Yu, M., Chen, Z., Xiang, C. et al. Microfluidic-based single cell trapping using a combination of stagnation point flow and physical barrier. Acta Mech. Sin. 32, 422–429 (2016). https://doi.org/10.1007/s10409-016-0558-2
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DOI: https://doi.org/10.1007/s10409-016-0558-2