1887

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Volume 65, Issue 8

Effect of and deletion on persister cell number in Free

Abstract

is responsible for a wide variety of infections that include superficial skin and soft tissue infections, septicaemia, central nervous system infections, endocarditis, osteomyelitis and pneumonia. Others have demonstrated the importance of toxin–antitoxin (TA) modules in the formation of persisters and the role of the Clp proteolytic system in the regulation of these TA modules. This study was conducted to determine the effect of and deletion on persister cell numbers following antibiotic treatment. Deletion of resulted in a significant decrease in persister cells following treatment with oxacillin and erythromycin but not with levofloxacin and daptomycin. Deletion of resulted in a decrease in persister cells following treatment with oxacillin. These differences were dependent on the antibiotic class and the CFU ml in which the cells were treated. Persister revival assays for all the bacterial strains in these studies demonstrated a significant delay in resumption of growth characteristic of persister cells, indicating that the surviving organisms in this study were not likely due to spontaneous antibiotic resistance. Based on our results, ClpP and possibly ClpC play a role in persister cell formation or maintenance, and this effect is dependent on antibiotic class and the CFU ml or the growth phase of the cells.

  • Received:
  • Accepted:
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Keyword(s): ClpC , ClpP , persistence and Staphylococcus aureus
© 2016 The Authors
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2016-08-01
2024-04-18
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Effect of clpP and clpC deletion on persister cell number in Staphylococcus aureus
J. Med. Microbiol. 65, 848 (2016); https://doi.org/10.1099/jmm.0.000304
/content/journal/jmm/10.1099/jmm.0.000304
/content/journal/jmm/10.1099/jmm.0.000304
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