Distinct single-cell morphological dynamics under beta-lactam antibiotics.
Distinct single-cell morphological dynamics under beta-lactam antibiotics.
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DOI:
10.1016/j.molcel.2012.09.016
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发表时间:
2012-12-14
期刊:
影响因子:
16
通讯作者:
Kishony, Roy
中科院分区:
文献类型:
--
作者:
Yao, Zhizhong;Kahne, Daniel;Kishony, Roy
The bacterial cell wall is conserved in prokaryotes, stabilizing cells against osmotic stress. Beta-lactams inhibit cell wall synthesis and induce lysis through a bulge-mediated mechanism; however, little is known about the formation dynamics and stability of these bulges. To capture processes of different timescales, we developed an imaging platform combining automated image analysis with live cell microscopy at high time resolution. Beta-lactam killing of Escherichia coli cells proceeded through four stages: elongation, bulge formation, bulge stagnation and lysis. Both the cell wall and outer membrane (OM) affect the observed dynamics; damaging the cell wall with different beta-lactams and compromising OM integrity cause different modes and rates of lysis. Our results show that the bulge formation dynamics is determined by how the cell wall is perturbed. The OM plays an independent role in stabilizing the bulge once it is formed. The stabilized bulge delays lysis, and allows recovery upon drug removal.
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影响因子:
64.5
作者:
Paradis-Bleau C;Markovski M;Uehara T;Lupoli TJ;Walker S;Kahne DE;Bernhardt TG
通讯作者:
Bernhardt TG
DOI:
10.1073/pnas.0805309105
发表时间:
2008-12-09
影响因子:
11.1
作者:
Huang, Kerwyn Casey;Mukhopadhyay, Ranjan;Wingreen, Ned S.
通讯作者:
Wingreen, Ned S.
影响因子:
2.9
作者:
KAMIO, Y;NIKAIDO, H
通讯作者:
NIKAIDO, H
影响因子:
2.8
作者:
de Pedro, MA;Höltje, JV;Schwarz, H
通讯作者:
Schwarz, H
影响因子:
2.4
作者:
Daly, Kristopher E.;Huang, Kerwyn Casey;Mukhopadhyay, Ranjan
通讯作者:
Mukhopadhyay, Ranjan