title: A phospholipidomic analysis of all defined human plasma lipoproteins.
abstract: Since plasma lipoproteins contain both protein and phospholipid components, either may be involved in processes such as atherosclerosis. In this study the identification of plasma lipoprotein-associated phospholipids, which is essential for understanding these processes at the molecular level, are performed. LC-ESI/MS, LC-ESI-MS/MS and High Performance Thin Layer Chromatography (HPTLC) analysis of different lipoprotein fractions collected from pooled plasma revealed the presence of phosphatidylethanolamine (PE), phosphatidylinositol (PI), and sphingomyeline (SM) only on lipoproteins and phosphatidylcholine (PC), Lyso-PC on both lipoproteins and plasma lipoprotein free fraction (PLFF). Cardiolipin, phosphatidylglycerol (PG) and Phosphatidylserine (PS) were observed neither in the lipoprotein fractions nor in PLFF. All three approaches led to the same results regarding phospholipids occurrence in plasma lipoproteins and PLFF. A high abundancy of PE and SM was observed in VLDL and LDL fractions respectively. This study provides for the first time the knowledge about the phospholipid composition of all defined plasma lipoproteins.
authors.affiliation: Department of Cell Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
authors.forename: Monireh
authors.initials: M
authors.lastname: Dashti
authors.forename: Willem
authors.initials: W
authors.lastname: Kulik
authors.forename: Frans
authors.initials: F
authors.lastname: Hoek
authors.forename: Enno C
authors.initials: EC
authors.lastname: Veerman
authors.forename: Maikel P
authors.initials: MP
authors.lastname: Peppelenbosch
authors.forename: Farhad
authors.initials: F
authors.lastname: Rezaee
mesh_terms: D002855:Chromatography, Thin Layer; D006801:Humans; D008074:Lipoproteins / Q000097:blood* / Q000737:chemistry / Q000145:classification; D008244:Lysophosphatidylcholines / Q000097:blood; D010713:Phosphatidylcholines / Q000097:blood; D010714:Phosphatidylethanolamines / Q000097:blood; D010716:Phosphatidylinositols / Q000097:blood; D010743:Phospholipids / Q000097:blood / Q000737:chemistry; D010766:Phosphorylation; D021241:Spectrometry, Mass, Electrospray Ionization; D013109:Sphingomyelins / Q000097:blood; D053719:Tandem Mass Spectrometry
chemical_list: D008074:Lipoproteins; D008244:Lysophosphatidylcholines; D010713:Phosphatidylcholines; D010714:Phosphatidylethanolamines; D010716:Phosphatidylinositols; D010743:Phospholipids; D013109:Sphingomyelins; C483858:phosphatidylethanolamine