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- W2971445810 abstract "Abstract Objective Endothelial progenitor cells (EPCs) promote the maintenance of the endothelium by the secretion of vasoreparative factors. A population of EPCs known as early outgrowth cells (EOCs) are currently being investigated as novel cell-based therapies for the treatment of cardiovascular disease. We previously demonstrated that the absence of liver x receptors (LXRs) is detrimental to the formation and function of EOCs under hypercholesterolemic conditions. Here, we investigate whether LXR gain-of-function in EOCs is beneficial for the treatment of atherosclerosis. Approach and Results EOCs were differentiated from the bone marrow of wildtype (WT) and LXR-knockout ( Lxrαβ -/-) mice in the presence of vehicle or LXR agonist (GW3965). WT EOCs treated with GW3965 throughout differentiation showed reduced expression of endothelial lineage markers ( Cd144, Vegfr2 ) compared to WT vehicle and Lxrαβ -/- cells. GW3965-treated EOCs produced secreted factors that reduced monocyte adhesion to activated endothelial cells in culture. When injected into atherosclerosis-prone Ldlr -/- mice, GW3965-treated EOCs and concentrated conditioned media (CM) from GW3965-treated EOCs, reduced plaque burden within the aortic sinus. Furthermore, when CM from human EOCs (obtained from patients with established CAD) were treated with GW3965, monocyte to endothelial adhesion was decreased suggesting the translatability of the results. Conclusions Ex vivo LXR agonist treatment of EOCs produces a secretome that decreases early atherosclerosis in Ldlr -/- mice. CM from human EOCs significantly inhibits monocyte to endothelial adhesion. Thus, active factor(s) within the GW3965-treated EOC secretome have the potential to be useful for the treatment of atherosclerosis." @default.
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- W2971445810 date "2019-09-04" @default.
- W2971445810 modified "2023-09-26" @default.
- W2971445810 title "The Secretome of Liver X Receptor Agonist Treated Early Outgrowth Cells Decreases Atherosclerosis in<i>Ldlr</i>-/- Mice" @default.
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- W2971445810 doi "https://doi.org/10.1101/757435" @default.
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