New families of bioactive oxidized phospholipids generated by immune cells: Identification and signaling actions

O'Donnell, Valerie Bridget ORCID: https://orcid.org/0000-0003-4089-8460 and Murphy, Robert C. 2012. New families of bioactive oxidized phospholipids generated by immune cells: Identification and signaling actions. Blood 120 (10) , pp. 1985-1992. 10.1182/blood-2012-04-402826

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Abstract

Phospholipids are of critical importance in mammalian cell biology, both through providing a permeability barrier and acting as substrates for synthesis of lipid mediators. Recently, several new families of bioactive lipids were identified that form through the enzymatic oxidation of membrane phospholipids in circulating innate immune cells and platelets. These comprise eicosanoids attached to phosphatidylethanolamine and phosphatidylcholine and form within 2-5 minutes of cell activation by pathophysiologic agonists, via the coordinated action of receptors and enzymes. In this review, we summarize what is currently known regarding their structures, mechanisms of formation, cell biology, and signaling actions. We show that phospholipid oxidation by acutely activated immune cells is a controlled event, and we propose a central role in regulating membrane biology and innate immune function during health and disease. We also review the mass spectrometry methods used for identification of the lipids and describe how these approaches can be used for discovery of new lipid mediators in complex biologic samples.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine Systems Immunity Research Institute (SIURI)
Subjects:	Q Science > QR Microbiology > QR180 Immunology R Medicine > RC Internal medicine
Publisher:	American Society of Hematology
ISSN:	0006-4971
Last Modified:	24 Oct 2022 09:59
URI:	https://orca.cardiff.ac.uk/id/eprint/42805

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