KT5823 activates human neutrophils and fails to inhibit cGMP-dependent protein kinase phosphorylation of vimentin

  • Res Commun Chem Pathol Pharmacol. 1991 Oct;74(1):3-14.
T A Wyatt  1 K B Pryzwansky T M Lincoln
Affiliations
  • 1. Department of Pathology, University of North Carolina, Chapel Hill 27599-7525.
PMID: 1666198
Abstract

The effectiveness of the cGMP-dependent protein kinase inhibitor, KT5823, was investigated in human neutrophils. KT5823 did not inhibit the cGMP-dependent protein kinase mediated in vitro, or in situ phosphorylation of vimentin, a known substrate for this enzyme in activated neutrophils. In addition, KT5823 was shown to induce dramatic shape changes in neutrophils, suggesting it has an activating effect upon the cells.

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