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Role of Staphylococcus aureus global regulators sae and sigmaB in virulence gene expression during device-related infection


Goerke, Christiane; Fluckiger, Ursula; Steinhuber, Andrea; Bisanzio, Vittoria; Ulrich, Martina; Bischoff, Markus; Patti, Joseph M; Wolz, Christiane (2005). Role of Staphylococcus aureus global regulators sae and sigmaB in virulence gene expression during device-related infection. Infection and Immunity, 73(6):3415-3421.

Abstract

The ability of Staphylococcus aureus to adapt to different environments is due to a regulatory network comprising several loci. Here we present a detailed study of the interaction between the two global regulators sae and sigmaB of S. aureus and their influence on virulence gene expression in vitro, as well as during device-related infection. The expression of sae, asp23, hla, clfA, coa, and fnbA was determined in strain Newman and its isogenic saeS/R and sigB mutants by Northern analysis and LightCycler reverse transcription-PCR. There was no indication of direct cross talk between the two regulators. sae had a dominant effect on target gene expression during device-related infection. SigmaB seemed to be less active throughout the infection than under induced conditions in vitro.

Abstract

The ability of Staphylococcus aureus to adapt to different environments is due to a regulatory network comprising several loci. Here we present a detailed study of the interaction between the two global regulators sae and sigmaB of S. aureus and their influence on virulence gene expression in vitro, as well as during device-related infection. The expression of sae, asp23, hla, clfA, coa, and fnbA was determined in strain Newman and its isogenic saeS/R and sigB mutants by Northern analysis and LightCycler reverse transcription-PCR. There was no indication of direct cross talk between the two regulators. sae had a dominant effect on target gene expression during device-related infection. SigmaB seemed to be less active throughout the infection than under induced conditions in vitro.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Medical Microbiology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:2005
Deposited On:06 Aug 2012 16:20
Last Modified:05 Apr 2016 15:47
Publisher:American Society for Microbiology
ISSN:0019-9567
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.1128/IAI.73.6.3415-3421.2005
PubMed ID:15908369

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