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Targeted mass spectrometry analysis of neutrophil-derived proteins released during sepsis progression.

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Summary, in English

Early diagnosis of severe infectious diseases is essential for timely implementation of lifesaving therapies. In a search for novel biomarkers in sepsis diagnosis we focused on polymorphonuclear neutrophils (PMNs). Notably, PMNs have their protein cargo readily stored in granules and following systemic stimulation an immediate increase of neutrophil-borne proteins can be observed into the circulation of sepsis patients. We applied a combination of mass spectrometry (MS) based approaches, LC-MS/MS and selected reaction monitoring (SRM), to characterise and quantify the neutrophil proteome in healthy or disease conditions. With this approach we identified a neutrophil-derived protein abundance pattern in blood plasma consisting of 20 proteins that can be used as a protein signature for severe infectious diseases. Our results also show that SRM is highly sensitive, specific, and reproducible and, thus, a promising technology to study a complex, dynamic and multifactorial disease such as sepsis.

Publishing year

2014

Language

English

Pages

1230-1243

Publication/Series

Thrombosis and Haemostasis

Volume

112

Issue

6

Document type

Journal article

Publisher

Schattauer GmbH

Topic

  • Cardiac and Cardiovascular Systems

Status

Published

Project

  • Secondary infection project

Research group

  • Translational Sepsis research
  • Infection Medicine Proteomics
  • SEBRA Sepsis and Bacterial Resistance Alliance

ISBN/ISSN/Other

  • ISSN: 0340-6245