Kevin S. McIver

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Virulence factor regulation and regulatory networks in Streptococcus pyogenes and their impact on pathogen-host interactions.

Bernd Kreikemeyer; Kevin S McIver; Andreas Podbielski (Profiled Author: Kevin S. McIver)

University Hospital Rostock, Department of Medical Microbiology and Hospital Hygiene, Schillingallee 70, 18055 Rostock, Germany. Bernd.Kreikemeyer@med.uni-rostock.de
Trends in microbiology 2003;11(5):224-32.

Streptococcus pyogenes (group A streptococcus, GAS) is a very important human pathogen with remarkable adaptation capabilities. Survival within the harsh host surroundings requires sensing potential on the bacterial side, which leads in particular to coordinately regulated virulence factor expression. GAS 'stand-alone' response regulators (RRs) and two-component signal transduction systems (TCSs) link the signals from the host environment with adaptive responses of the bacterial cell. Numerous putative regulatory systems emerged from GAS genome sequences. Only three RRs [Mga, RofA-like protein (RALP) and Rgg/RopB] and three TCSs (CsrRS/CovRS, FasBCAX and Ihk/Irr) have been studied in some detail with respect to their growth-phase-dependent activity and their influence on GAS-host cell interaction. In particular, the Mga-, RALP- and Rgg/RopB-regulated pathways display interconnected activities that appear to influence GAS colonization, persistence and spreading mechanisms, in a growth-phase-related fashion. Here, we have summarized our current knowledge about these RRs and TCSs to highlight the questions that should be addressed in future research on GAS pathogenicity.

1 Originating Grant

• 1.

  MCIVER, KEVIN S.

  PRD-Containing Virulence Regulators of Pathogenic Streptococci

  1 July 2000 - 31 January 2017

  NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES

Scientific Context

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