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Origins of Cell-to-Cell Bioprocessing Diversity and Implications of the Extracellular Environment Revealed at the Single-Cell Level

Author(s)
Vasdekis, A. E.; Silverman, Andrew M.; Stephanopoulos, Gregory
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Abstract
Bioprocess limitations imposed by microbial cell-to-cell phenotypic diversity remain poorly understood. To address this, we investigated the origins of such culture diversity during lipid production and assessed the impact of the fermentation microenvironment. We measured the single-cell lipid production dynamics in a time-invariant microfluidic environment and discovered that production is not monotonic, but rather sporadic with time. To characterize this, we introduce bioprocessing noise and identify its epigenetic origins. We linked such intracellular production fluctuations with cell-to-cell productivity diversity in culture. This unmasked the phenotypic diversity amplification by the culture microenvironment, a critical parameter in strain engineering as well as metabolic disease treatment.
Date issued
2015-12
URI
http://hdl.handle.net/1721.1/100931
Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Journal
Scientific Reports
Publisher
Nature Publishing Group
Citation
Vasdekis, A. E., A. M. Silverman, and G. Stephanopoulos. “Origins of Cell-to-Cell Bioprocessing Diversity and Implications of the Extracellular Environment Revealed at the Single-Cell Level.” Scientific Reports 5 (December 14, 2015): 17689.
Version: Final published version
ISSN
2045-2322

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