PXD029713

PXD029713 is an original dataset announced via ProteomeXchange.

Title	Apolipoprotein F in hyperlipidemia
Description	Apolipoprotein F (ApoF) modulates lipoprotein metabolism by selectively inhibiting cholesteryl ester transfer protein (CETP) activity on LDL. This ApoF activity requires that it is bound to LDL. How hyperlipidemia alters total plasma ApoF and its binding to LDL are poorly understood. In this study, total ApoF and LDL-bound ApoF were quantified by ELISA. Plasma ApoF is increased 34% in hypercholesterolemic plasma. In hypertriglyceridemic plasma, ApoF was statistically unchanged. However, in donors with combined hypercholesterolemia and hypertriglyceridemia, the elevated triglyceride ameliorated the rise in ApoF caused by hypercholesterolemia alone. Compared to normolipidemic LDL, hypercholesterolemic LDL contained ~2-fold more ApoF per LDL particle, whereas ApoF bound to LDL in hypertriglyceridemia plasma was < 20% of control. To understand the basis for altered association of ApoF with hyperlipidemic LDL, the physiochemical properties of LDL were modified in vitro by CETP ± LCAT activities. The time-dependent change in LDL lipid composition, proteome, core and surface lipid packing, LDL surface charge, and LDL size caused by these factors were compared with the ApoF binding capacity of these LDL. Only LDL particle size correlated with ApoF binding capacity. This positive association between LDL size and ApoF content was confirmed in hyperlipidemic plasmas. Similarly, when in vitro-produced, enlarged LDL with elevated ApoF binding capacity were incubated with LPL to reduce their size, ApoF binding was reduced by 90%. Thus, plasma ApoF levels and the activation status of this ApoF are differentially altered by hypercholesterolemia and hypertriglyceridemia. LDL size is a key determinate of ApoF binding and activation.
HostingRepository	PRIDE
AnnounceDate	2022-02-11
AnnouncementXML	Submission_2022-02-11_06:44:56.495.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Ling Li
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	acetylated residue; monohydroxylated residue; iodoacetamide derivatized residue
Instrument	LTQ Orbitrap Elite

Revision	Datetime	Status	ChangeLog Entry
0	2021-11-12 06:07:20	ID requested
⏵ 1	2022-02-11 06:44:56	announced

Dataset with its publication pending

submitter keyword: Apolipoproteins, plasma lipid transfer proteins, LDL metabolism, apolipoprotein F, cholesteryl ester transfer protein, lipid biochemistry, lipoproteins, hypercholesterolemia, hypertriglyceridemia

Richard E. Morton
contact affiliation	Department of Cardiovascular and Metabolic Sciences, NC10, Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Ave., Cleveland, OH 44195
contact email	mortonr@ccf.org
lab head
Ling Li
contact affiliation	Cleveland Clinic
contact email	lil5@ccf.org
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2022/02/PXD029713

PRIDE project URI

• PRIDE
  1. PXD029713
     1. Label: PRIDE project
     2. Name: Apolipoprotein F in hyperlipidemia