Mixed effects of TGF-beta on human airway epithelial-cell chemokine responses

Immunopharmacology. 2000 Jun;48(1):17-26. doi: 10.1016/s0162-3109(99)00190-3.

Abstract

We investigated chemokine responses of human airway epithelial cells to transforming growth factor (TGF)-beta alone and in combination with tumor necrosis factor (TNF)-alpha or interferon (IFN)-gamma. TGF-beta selectively induced production of granulocyte-macrophage colony stimulating factor (GM-CSF) without significant coordinate expression of IL-8 or RANTES. TNF-alpha induced expression of both IL-8 and GM-CSF, without detectable production of RANTES. TGF-beta synergistically enhanced GM-CSF production with TNF-alpha, but suppressed production and release of IL-8. IFN-gamma induced RANTES production and release; TGF-beta synergistically enhanced RANTES release induced by IFN-gamma, but had no effect on RANTES mRNA production. Taken together, these data demonstrate that TGF-beta may play a pivotal role in the responsiveness of airway epithelial cells to chemotactic cytokines, by selectively enhancing GM-CSF and RANTES production while suppressing IL-8 production. This profile of chemokine responses promoted by TGF-beta would favor eosinophil, lymphocyte and monocyte recruitment, hallmarks of chronic and allergic inflammation, over neutrophil sequestration.

Publication types

  • Comparative Study
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Bronchi / drug effects*
  • Bronchi / immunology
  • Cells, Cultured
  • Chemokine CCL5 / biosynthesis
  • Chemokines / biosynthesis*
  • Dose-Response Relationship, Drug
  • Drug Synergism
  • Epithelial Cells / drug effects
  • Epithelial Cells / immunology
  • Granulocyte-Macrophage Colony-Stimulating Factor / biosynthesis
  • Humans
  • Interferon-gamma / pharmacology
  • Interleukin-8 / biosynthesis
  • RNA, Messenger / biosynthesis
  • Transforming Growth Factor beta / pharmacology*
  • Tumor Necrosis Factor-alpha / pharmacology

Substances

  • Chemokine CCL5
  • Chemokines
  • Interleukin-8
  • RNA, Messenger
  • Transforming Growth Factor beta
  • Tumor Necrosis Factor-alpha
  • Interferon-gamma
  • Granulocyte-Macrophage Colony-Stimulating Factor