Icosanoid production can be decreased without alterations in cellular arachidonate content or enzyme activities required for arachidonate release and icosanoid synthesis

M. Laposata, S. L. Kaiser, A. M. Capriotti

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

We have demonstrated that icosanoid production can be inhibited by altering the distribution of arachidonate within the cell, so that it is not released from phospholipids for icosanoid synthesis. This effect was observed in a prostaglandin E2-producing cell line (HSDM1C1) by deprivation of exogenous arachidonate for 24-48 h. Icosanoid production by the cells upon bradykinin stimulation was impaired despite no change in the concentration of arachidonate within the cell and no change in the activity of cyclooxygenase, phospholipases, acyltransferases, or fatty acyl-CoA hydrolase. Associated with the decline in prostaglandin E2 production was an increase in arachidonate incorporation into ethanolamine plasmalogens and a decrease in the activity of the enzyme arachidonoyl-CoA synthetase, which may play a role in compartmentation of arachidonate within the cell. Thus, we have found that a decrease in icosanoid production can be achieved without pharmacologic intervention by a short-term restriction of exogenous arachidonate which leads to redistribution of arachidonate within phospholipids and/or subcellular membranes in the cell.

Original languageEnglish (US)
Pages (from-to)3266-3273
Number of pages8
JournalJournal of Biological Chemistry
Volume263
Issue number7
StatePublished - Jan 1 1988
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Fingerprint Dive into the research topics of 'Icosanoid production can be decreased without alterations in cellular arachidonate content or enzyme activities required for arachidonate release and icosanoid synthesis'. Together they form a unique fingerprint.

Cite this