Protein expression in sputum of smokers and chronic obstructive pulmonary disease patients: A pilot study by CapLC-ESI-Q-TOF

Begoña Casado, Paolo Iadarola, Lewis K. Pannell, Maurizio Luisetti, Angelo Corsico, Elena Ansaldo, Ilaria Ferrarotti, Piera Boschetto, James N. Baraniuk

Research output: Contribution to journalArticle

Abstract

The current report describes the use of CapLC-ESI-Q/TOF-MS for investigating the proteome profiles of hypertonic saline-induced sputum samples from 56 smokers. The severity of their lung disease ranged from normal (healthy smokers) to chronic bronchitis, chronic obstructive pulmonary disease (COPD), and COPD with emphysema. This pilot study examined the hypothesis that there were distinct differences in protein expression profiles that were related to the phenotype and cigarette smoking illness severity. A total of 203 unique proteins were identified. These may represent the most highly expressed proteins in induced sputum. Our results provide evidence that different proteins are expressed, as the disease progresses from health to more advanced stages, and support our contention that a proteomic approach would be beneficial in discovering selective molecules linked to specific COPD stages.

Original languageEnglish
Pages (from-to)4615-4623
Number of pages9
JournalJournal of Proteome Research
Volume6
Issue number12
DOIs
Publication statusPublished - Dec 2007

Keywords

  • Chronic bronchitis
  • COPD
  • LC-Q-TOF
  • Smokers
  • Sputum

ASJC Scopus subject areas

  • Genetics
  • Biotechnology
  • Biochemistry

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