Phosphatidylthreonine is a procoagulant lipid detected in human blood and elevated in coronary artery disease.

ABSTRACT: Aminophospholipids (aPL) such as phosphatidylserine are essential for supporting the activity of coagulation factors, circulating platelets, and blood cells. Phosphatidylthreonine (PT) is an aminophospholipid previously reported in eukaryotic parasites and animal cell cultures, but not yet in human tissues. Here, we evaluated whether PT is present in blood cells and characterized its ability to support coagulation. Several PT molecular species were detected in human blood, washed platelets, extracellular vesicles, and isolated leukocytes from healthy volunteers using liquid chromatography-tandem mass spectrometry. The ability of PT to support coagulation was demonstrated in vitro using biochemical and biophysical assays. In liposomes, PT supported prothrombinase activity in the presence an

SUBMITTER: Hajeyah AA 

PROVIDER: S-EPMC10809103 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature