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Contenu archivé le 2024-06-18

Apolipoprotein A-I and modulation of T cell functions

Objectif

The pathogenesis of atherosclerosis involves inflammation and immune reactions. T cell responses contribute to local inflammation and growth of the atherosclerotic plaque. As intensified inflammatory activation may lead to local proteolysis, plaque rupture, and formation of a thrombus, studies of conventional and regulatory T cell functions during hypercholesterolemia are of outmost importance.
Low levels of high-density lipoprotein (HDL) cholesterol are associated with inflammatory and immune disorders, including atherosclerosis. Although accumulating evidence suggests that HDL has anti-inflammatory properties, and functions as a part of the immune system, the mechanisms by which HDL inhibits atherosclerosis are not yet fully understood.
Here, I propose to study the potential role of apoA-I in regulating the function of conventional and regulatory T cells. To this end, I will use hypercholesterolemic LDL receptor (LDLr) -/- and apoA-I-/- double knock-out (DKO) mice that develop severe atherosclerosis and display autoimmune phenotype, and, as a control, (LDLr) -/- single knock-out (SKO) mice fed atherogenic diet to study: 1) the role of apoA-I in regulating T cell motility, 2) the influence of apoAI on adhesion of T cells to antigen-presenting cells, 3) the effect of apoA-I on T-cell signaling molecules that regulate T cell motility and adhesion, 4) the relation between apoA-I and apoA-I-affected T-cell signaling molecules in vivo. These complementary approaches will allow me to investigate the role of apoA-I on regulating T cells functions, and will be indispensable to assess an impact of apoA-I-affected T-cell signaling molecules on atherosclerosis and autoimmune diseases.
As conventional T cells critically modulate atherosclerosis by promoting inflammation, and regulatory T cells display atheroprotective properties, mechanistic insights into how apoA-I regulates T cell functions will advance our understanding of the immune processes involved in atherosclerosis.

Champ scientifique (EuroSciVoc)

Programme(s)

Thème(s)

Appel à propositions

FP7-PEOPLE-2012-IEF
Voir d’autres projets de cet appel

Régime de financement

MC-IEF - Intra-European Fellowships (IEF)

Coordinateur

THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE
Contribution de l’UE
€ 231 283,20
Adresse
TRINITY LANE THE OLD SCHOOLS
CB2 1TN CAMBRIDGE
Royaume-Uni
Région
East of England East Anglia Cambridgeshire CC
Type d’activité
Higher or Secondary Education Establishments
Liens
Coût total
Aucune donnée