Abstract
Droplet microfluidics is a powerful platform for high-throughput single-molecule protein analysis. However, the issues of coalescence and crosstalk of droplets compromise the accuracy of detection and hinder its wide application. To address these limitations, a novel colloidosome-based method was presented by combining a Pickering emulsion with droplet microfluidics for single-molecule protein analysis. Utilizing the self-assembly of easily synthesized colloidal surfactant F-SiO2 NPs at the water/oil interface, the colloidosomes are rigidly stabilized and can effectively avoid the leakage of fluorescent molecules. The crosstalk-free colloidosomes enable high-throughput single-molecule protein analysis, including heterogenous dynamic studies and digital detection. As a robust and accurate method, colloidosome-based microfluidics is promising as a powerful tool for a wide variety of applications, such as directed enzyme evolution, digital enzyme-linked immunosorbent assay (ELISA), and screening of antibiotics.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (21775128, 21974113, 21927806, 21735004, 21435004, 21521004), the Program for Chang Jiang Scholars and Innovative Research Teams in University (IRT13036) and the National Science Fund for Fostering Talents in Basic Science (NFFTBS, J1310024).
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Yin, K., Zeng, X., Liang, X. et al. Crosstalk-free colloidosomes for high throughput single-molecule protein analysis. Sci. China Chem. 63, 1507–1514 (2020). https://doi.org/10.1007/s11426-020-9818-9
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DOI: https://doi.org/10.1007/s11426-020-9818-9