Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1984 Nov 10;259(21):13329-33.

Thrombin-induced release of von Willebrand factor from endothelial cells is mediated by phospholipid methylation. Prostacyclin synthesis is independent of phospholipid methylation

P G de Groot, M D Gonsalves, C Loesberg, M F van Buul-Wortelboer, W G van Aken, J A van Mourik
  • PMID: 6436246
Free article

Thrombin-induced release of von Willebrand factor from endothelial cells is mediated by phospholipid methylation. Prostacyclin synthesis is independent of phospholipid methylation

P G de Groot et al. J Biol Chem. .
Free article

Abstract

The biochemical events that lead to thrombin-stimulated release of von Willebrand factor and prostacyclin synthesis in cultured endothelial cells are examined. Treatment of human umbilical vein endothelial cells with thrombin results in an instantaneous increase in phospholipid methylation which can be blocked by 3-deazaadenosine, a methyltransferase inhibitor. 3-Deazaadenosine also blocks the thrombin-induced Ca2+ influx into endothelial cells and the release of von Willebrand factor, indicating that these processes are coupled. The phorbol ester 4 beta-phorbol 12-myristate 13-acetate (PMA) and the Ca2+ ionophore A23187 both bypass the phospholipid methylation and directly stimulate Ca2+ influx and von Willebrand factor release. In contrast to the stimulus-induced von Willebrand factor release, the thrombin-induced prostacyclin synthesis cannot be blocked by 3-deazaadenosine. Similarly, incubation of endothelial cells with EDTA has no influence on the thrombin-induced prostacyclin synthesis, and PMA has no stimulatory effect on prostacyclin synthesis. These observations indicate that thrombin induces different metabolic responses in endothelial cells: phospholipid methylation followed by a Ca2+ influx, which subsequently leads to release of von Willebrand factor, and liberation of arachidonic acid from phospholipids for prostacyclin formation, which is independent of phospholipid methylation and Ca2+ influx.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

Publication types

MeSH terms

LinkOut - more resources