A synthetic system for asymmetric cell division in Escherichia coli
A synthetic system for asymmetric cell division in Escherichia coli
复制标题
大肠杆菌不对称细胞分裂的合成系统
DOI:
10.1038/s41589-019-0339-x
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发表时间:
2019
影响因子:
14.8
通讯作者:
Bennett, Matthew R.
中科院分区:
文献类型:
--
作者:
Molinari, Sara;Shis, David L.;Bhakta, Shyam P.;Chappell, James;Igoshin, Oleg A.;Bennett, Matthew R.
We describe a synthetic genetic circuit for controlling asymmetric cell division inEscherichia coliin which a progenitor cell creates a differentiated daughter cell while retaining its original phenotype. Specifically, we engineered an inducible system that can bind and segregate plasmid DNA to a single position in the cell. Upon cell division, colocalized plasmids are kept by one and only one of the daughter cells. The other daughter cell receives no plasmid DNA and is irreversibly differentiated from its sibling. In this way, we achieved asymmetric cell division through asymmetric plasmid partitioning. We then used this system to achieve physical separation of genetically distinct cells by tying motility to differentiation. Finally, we characterized an orthogonal inducible circuit that enables the simultaneous asymmetric partitioning of two plasmid species, resulting in cells that have four distinct differentiated states. These results point the way toward the engineering of multicellular systems from prokaryotic hosts.
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