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2013 ; 79
(23
): 7116-21
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Bacterial persister cell formation and dormancy
#MMPMID24038684
Wood TK
; Knabel SJ
; Kwan BW
Appl Environ Microbiol
2013[Dec]; 79
(23
): 7116-21
PMID24038684
show ga
Bacterial cells may escape the effects of antibiotics without undergoing genetic
change; these cells are known as persisters. Unlike resistant cells that grow in
the presence of antibiotics, persister cells do not grow in the presence of
antibiotics. These persister cells are a small fraction of exponentially growing
cells (due to carryover from the inoculum) but become a significant fraction in
the stationary phase and in biofilms (up to 1%). Critically, persister cells may
be a major cause of chronic infections. The mechanism of persister cell formation
is not well understood, and even the metabolic state of these cells is debated.
Here, we review studies relevant to the formation of persister cells and their
metabolic state and conclude that the best model for persister cells is still
dormancy, with the latest mechanistic studies shedding light on how cells reach
this dormant state.