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Title (Primary) Quantification of biocatalytic transformations by single microbial cells enabled by tailored integration of droplet microfluidics and mass spectrometry
Author Wink, K.; van der Loh, M.; Hartner, N.; Polack, M.; Dusny, C.; Schmid, A.; Belder, D.
Journal Angewandte Chemie-International Edition
Year 2022
Department SOMA
Volume 61
Issue 29
Page From e202204098
Language englisch
Topic T7 Bioeconomy
Supplements https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fanie.202204098&file=anie202204098-s1-Supporting_Information_Wink_et_al.pdf
Keywords droplet microfluidics; mass spectrometry; single cells; whole-cell catalysis; microreactors
Abstract Improving the performance of chemical transformations catalysed by microbial biocatalysts requires a deep understanding of cellular processes. While the cellular heterogeneity of cellular characteristics, such as the concentration of high abundant cellular content, is well studied, little is known about the reactivity of individual cells and its impact on the chemical identity, quantity, and purity of excreted products. Biocatalytic transformations were monitored chemically specific and quantifiable at the single-cell level by integrating droplet microfluidics, cell imaging, and mass spectrometry. Product formation rates for individual Saccharomyces cerevisiae cells were obtained by i) incubating nanolitre-sized droplets for product accumulation in microfluidic devices, ii) an imaging setup to determine the number of cells in the droplets, and iii) electrospray ionisation mass spectrometry for reading the chemical contents of individual droplets. These findings now enable the study of whole-cell biocatalysis at single-cell resolution.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=26121
Wink, K., van der Loh, M., Hartner, N., Polack, M., Dusny, C., Schmid, A., Belder, D. (2022):
Quantification of biocatalytic transformations by single microbial cells enabled by tailored integration of droplet microfluidics and mass spectrometry
Angew. Chem.-Int. Edit. 61 (29), e202204098