Trafficking of neutrophils across airway epithelium is dependent upon both thioredoxin- and pertussis toxin-sensitive signaling mechanisms

Lisa Miller, Jodie Usachenko, Ruth J McDonald, Dallas M. Hyde

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Leukocyte recruitment from the circulation into the airways is a multi-step process, involving both chemotactic and adhesive mechanisms. Using an in vitro model of leukocyte transepithelial trafficking, we show that movement of human peripheral blood neutrophils (PMN) across airway epithelium in the optimal basolateral-to-apical surface direction is partially blocked by pertussis toxin, an inhibitor of G(αi)-protein-linked receptors. A neutralizing monoclonal antibody against interleukin-8 (IL-8; constitutively expressed by airway epithelium) did not inhibit PMN transepithelial migration, suggesting that alternative pertussis toxin-sensitive signaling mechanisms are involved in this process. However, a neutralizing antibody against thioredoxin, a redox enzyme with pertussis toxin-insensitive chemoattractant activity, did reduce PMN migration across airway epithelium. We conclude that trafficking of PMN across airway epithelium is mediated by both thioredoxin- and pertussis toxin-sensitive signaling mechanisms that are independent of IL-8.

Original languageEnglish (US)
Pages (from-to)201-208
Number of pages8
JournalJournal of Leukocyte Biology
Volume68
Issue number2
StatePublished - 2000

Fingerprint

Thioredoxins
Pertussis Toxin
Neutrophils
Epithelium
Interleukin-8
Neutralizing Antibodies
Leukocytes
Transendothelial and Transepithelial Migration
Chemotactic Factors
Adhesives
Oxidation-Reduction
Monoclonal Antibodies
Enzymes
Proteins

Keywords

  • Chemokine
  • Lung
  • Transepithelial

ASJC Scopus subject areas

  • Cell Biology

Cite this

Trafficking of neutrophils across airway epithelium is dependent upon both thioredoxin- and pertussis toxin-sensitive signaling mechanisms. / Miller, Lisa; Usachenko, Jodie; McDonald, Ruth J; Hyde, Dallas M.

In: Journal of Leukocyte Biology, Vol. 68, No. 2, 2000, p. 201-208.

Research output: Contribution to journalArticle

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