96 Citations (Scopus)

Abstract

Ciliary beating is required for the maintenance of lung mucociliary transport. We investigated the role of cyclic nucleotide-dependent protein kinases in stimulating ciliary beat frequency (CBF) in bovine bronchial epithelial cells (BBECs). cAMP-dependent protein kinase (PKA) activity and cGMP-dependent protein kinase (PKG) activity were distinguished after DEAE- Sephacel chromatography of BBEC extracts. cAMP levels and PKA activity are increased in BBECs stimulated with 0.01-1 mM isoproterenol, with a corresponding increase in CBF. cGMP levels and PKG activity are increased in BBECs stimulated with 0.1-10 μM sodium nitroprusside, with a corresponding increase in CBF. Direct protein kinase-activating analogs of cAMP and cGMP (dibutyryl cAMP and 8-bromo-cGMP, respectively) also activate their specific kinases and stimulate CBF. Preincubation of BBECs with inhibitors of PKA or PKG [KT-5720 or Rp-8-(p-chlorophenylthio)-guanosine 3',5'-cyclic monophosphothioate] results in the inhibition of specific kinase activity as well as in the inhibition of CBF. These studies suggest that the activation of either PKA or PKG can lead to the stimulation of CBF in bovine airway epithelium.

Original languageEnglish (US)
Pages (from-to)L827-L835
JournalAmerican Journal of Physiology - Lung Cellular and Molecular Physiology
Volume275
Issue number4 19-4
StatePublished - Nov 9 1998

Fingerprint

Protein Kinases
Epithelial Cells
Phosphotransferases
Mucociliary Clearance
Cyclic GMP-Dependent Protein Kinases
Guanosine
Cyclic Nucleotides
Nitroprusside
Protein Kinase Inhibitors
Cyclic AMP-Dependent Protein Kinases
Cell Extracts
Isoproterenol
Chromatography
Epithelium
Maintenance
Lung

Keywords

  • Adenosine 3',5'-cyclic monophosphate-dependent protein kinase
  • Guanosine 3',5'-cyclic monophosphate-dependent protein kinase

ASJC Scopus subject areas

  • Physiology
  • Pulmonary and Respiratory Medicine
  • Physiology (medical)
  • Cell Biology

Cite this

Regulation of ciliary beat frequency by both PKA and PKG in bovine airway epithelial cells. / Wyatt, Todd A; Spurzem, J. R.; May, K.; Sisson, Joseph Harold.

In: American Journal of Physiology - Lung Cellular and Molecular Physiology, Vol. 275, No. 4 19-4, 09.11.1998, p. L827-L835.

Research output: Contribution to journalArticle

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