Phasevarions Mediate Epigenetic Regulation of Antimicrobial Susceptibility in Neisseria meningitidis

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Jen, Freda E-C
Seib, Kate L
Jennings, Michael P
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2014
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Abstract

Phase variation is a common feature of host-adapted bacterial pathogens such as Neisseria meningitidis. Recently, we reported that this rapid on/off switching of gene expression occurs in DNA methyltransferases, altering expression in multiple genes via changes in global methylation. In the current study, we compared MIC values of strains with ModA11, ModA12, and ModD1 phasevarions, revealing MIC differences due to ModA11 and ModA12 switching, with a ModA11_OFF strain showing 4-fold reduced susceptibilities to ceftazidime and ciprofloxacin.

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Antimicrobial agents and Chemotherapy

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58

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7

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© 2014 American Society for Microbiology. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.

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Microbiology

Bacteriology

Medical microbiology

Pharmacology and pharmaceutical sciences

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