The effect of phospholipid composition of reconstituted HDL on its cholesterol efflux and anti-inflammatory properties |
| |
Authors: | Anna Schwendeman Denis O Sviridov Wenmin Yuan Yanhong Guo Emily E Morin Yue Yuan John Stonik Lita Freeman Alice Ossoli Seth Thacker Salena Killion Milton Pryor Y Eugene Chen Scott Turner Alan T Remaley |
| |
Institution: | 4. Department of Cardiac Surgery, University of Michigan, Ann Arbor, MI 48109;2. National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892;11. KineMed, Inc., Emeryville, CA 94608 |
| |
Abstract: | The goal of this study was to understand how the reconstituted HDL (rHDL) phospholipid (PL) composition affects its cholesterol efflux and anti-inflammatory properties. An ApoA-I mimetic peptide, 5A, was combined with either SM or POPC. Both lipid formulations exhibited similar in vitro cholesterol efflux by ABCA1, but 5A-SM exhibited higher ABCG1- and SR-BI-mediated efflux relative to 5A-POPC (P < 0.05). Injection of both rHDLs in rats resulted in mobilization of plasma cholesterol, although the relative potency was 3-fold higher for the same doses of 5A-SM than for 5A-POPC. Formation of preβ HDL was observed following incubation of rHDLs with both human and rat plasma in vitro, with 5A-SM inducing a higher extent of preβ formation relative to 5A-POPC. Both rHDLs exhibited anti-inflammatory properties, but 5A-SM showed higher inhibition of TNF-α, IL-6, and IL-1β release than did 5A-POPC (P < 0.05). Both 5A-SM and 5A-POPC showed reduction in total plaque area in ApoE?/? mice, but only 5A-SM showed a statistically significant reduction over placebo control and baseline (P < 0.01). The type of PL used to reconstitute peptide has significant influence on rHDL’s anti-inflammatory and anti-atherosclerosis properties. |
| |
Keywords: | high density lipoprotein apolipoprotein A-I sphingomyelin peptides inflammation atherosclerosis |
本文献已被 ScienceDirect 等数据库收录! |
|