Shotgun proteome analysis of Bordetella pertussis reveals a distinct influence of iron availability on the bacterial metabolism, virulence, and defense response Academic Article Article uri icon

Overview

MeSH Major

  • Cell Transformation, Viral
  • Oncogenes
  • Receptors, Cell Surface

abstract

  • © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. One of the mechanisms involved in host immunity is the limitation of iron accessibility to pathogens, which in turn provokes the corresponding physiological adaptation of pathogens. This study reports a gel-free nanoLC-MS/MS-based comparative proteome analysis of Bordetella pertussis grown under iron-excess and iron-depleted conditions. Out of the 926 proteins covered 98 displayed a shift in their abundance in response to low iron availability. Forty-seven of them were found to be increased in level while 58 were found with decreased protein levels under iron starvation. In addition to proteins previously reported to be influenced by iron in B. pertussis, we observed changes in metabolic proteins involved in fatty acid utilization and poly-hydroxybutyrate production. Additionally, many bacterial virulence factors regulated by the BvgAS two-component system were found at decreased levels in response to iron limitation. These results, together with the increased production of proteins potentially involved in oxidative stress resistance, seem to indicate that iron starvation provokes changes in B. pertussis phenotype that might shape host-pathogen interaction.

publication date

  • July 2015

Research

keywords

  • Academic Article

Identity

Digital Object Identifier (DOI)

  • 10.1002/pmic.201400512

PubMed ID

  • 25755163

Additional Document Info

start page

  • 2258

end page

  • 2266

volume

  • 15

number

  • 13