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High-throughput deterministic single-cell encapsulation and droplet pairing, fusion, and shrinkage in a single microfluidic device. 2014

Rogier M Schoeman, and Evelien W M Kemna, and Floor Wolbers, and Albert van den Berg
BIOS Lab on a Chip group, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands.

In this article, we present a microfluidic device capable of successive high-yield single-cell encapsulation in droplets, with additional droplet pairing, fusion, and shrinkage. Deterministic single-cell encapsulation is realized using Dean-coupled inertial ordering of cells in a Yin-Yang-shaped curved microchannel using a double T-junction, with a frequency over 2000 Hz, followed by controlled droplet pairing with a 100% success rate. Subsequently, droplet fusion is realized using electrical actuation resulting in electro-coalescence of two droplets, each containing a single HL60 cell, with 95% efficiency. Finally, volume reduction of the fused droplet up to 75% is achieved by a triple pitchfork structure. This droplet volume reduction is necessary to obtain close cell-cell membrane contact necessary for final cell electrofusion, leading to hybridoma formation, which is the ultimate aim of this research.

UI MeSH Term Description Entries
D004867 Equipment Design Methods and patterns of fabricating machines and related hardware. Design, Equipment,Device Design,Medical Device Design,Design, Medical Device,Designs, Medical Device,Device Design, Medical,Device Designs, Medical,Medical Device Designs,Design, Device,Designs, Device,Designs, Equipment,Device Designs,Equipment Designs
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D045744 Cell Line, Tumor A cell line derived from cultured tumor cells. Tumor Cell Line,Cell Lines, Tumor,Line, Tumor Cell,Lines, Tumor Cell,Tumor Cell Lines
D046210 Microfluidic Analytical Techniques Methods utilizing the principles of MICROFLUIDICS for sample handling, reagent mixing, and separation and detection of specific components in fluids. Microfluidic Analysis,Analyses, Microfluidic,Analysis, Microfluidic,Analytical Technique, Microfluidic,Analytical Techniques, Microfluidic,Microfluidic Analyses,Microfluidic Analytical Technique,Technique, Microfluidic Analytical,Techniques, Microfluidic Analytical
D057166 High-Throughput Screening Assays Rapid methods of measuring the effects of an agent in a biological or chemical assay. The assay usually involves some form of automation or a way to conduct multiple assays at the same time using sample arrays. High-Throughput Screening,High-Throughput Biological Assays,High-Throughput Chemical Assays,High-Throughput Screening Methods,Assay, High-Throughput Biological,Assay, High-Throughput Chemical,Assay, High-Throughput Screening,Biological Assay, High-Throughput,Chemical Assay, High-Throughput,High Throughput Biological Assays,High Throughput Chemical Assays,High Throughput Screening,High Throughput Screening Assays,High Throughput Screening Methods,High-Throughput Biological Assay,High-Throughput Chemical Assay,High-Throughput Screening Assay,High-Throughput Screening Method,High-Throughput Screenings,Screening Assay, High-Throughput,Screening Method, High-Throughput,Screening, High-Throughput
D059010 Single-Cell Analysis Assaying the products of or monitoring various biochemical processes and reactions in an individual cell. Analyses, Single-Cell,Analysis, Single-Cell,Single Cell Analysis,Single-Cell Analyses

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