Gene expression profiling of target genes in ventilator-induced lung injury

Tamás Dolinay, Naftali Kaminski, Martina Felgendreher, Hong P. Kim, Paul Reynolds, Simon C. Watkins, Dörte Karp, Stefan Uhlig, Augustine M.K. Choi

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

In the lungs, high-pressure mechanical ventilation induces an inflammatory response similar to that observed in acute respiratory distress syndrome. To further characterize these responses and to compare them with classical inflammatory pathways, we performed gene expression profiling analysis of 20,000 mouse genes in isolated blood-free (to exclude genes from sequestered leukocytes) perfused mouse lungs exposed to low-pressure ventilation (10 cmH2O), high-pressure ventilation (25 cmH2O, overventilation), and LPS treatment. A large number of inflammatory and apoptotic genes were increased by both overventilation and LPS. However, certain growth factor-related genes, as well as genes related to development, cellular communication, and the cytoskeleton, were only regulated by overventilation. We validated and confirmed increased mRNA expression pattern of five genes (amphiregulin, gravin, Nur77, Cyr61, interleukin-11) by real-time PCR; furthermore, we confirmed increased protein expression of amphiregulin by immunohistochemistry and immunoblotting assays. These genes represent novel candidate genes in ventilator-induced lung injury.

Original languageEnglish (US)
Pages (from-to)68-75
Number of pages8
JournalPhysiological Genomics
Volume26
Issue number1
DOIs
StatePublished - Jun 16 2006

Keywords

  • Acute respiratory distress syndrome
  • Gene expression analysis
  • Overventilation

ASJC Scopus subject areas

  • Physiology
  • Genetics

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