Vascular Disease Prevention


ISSN: 1567-2700 ― Volume 7, 2013

Vasculoprotective Effects of Apolipoprotein Mimetic Peptides: An Evolving Paradigm in HDL Therapy

Vascular Disease Prevention, 2009, 6: 122-130

C. Roger White, Geeta Datta, Paulina Mochon, Zhenghao Zhang, Ollie Kelly, Christine Curcio, Dale Parks, Mayakonda Palgunachari, Shaila Handattu, Himanshu Gupta, David W. Garber, G.M. Anantharamaiah

Vascular Biology and Hypertension Program, 1046 Zeigler Research Building, 703 South 19th St., Birmingham, AL 35294-0007, USA.

Electronic publication date 10/April/2009
[DOI: 10.2174/1567270001006010122]


Anti-atherogenic effects of high density lipoprotein (HDL) and its major protein component apolipoprotein A-I (apoA-I) are principally thought to be due to their ability to mediate reverse cholesterol transport. These agents also possess anti-oxidant properties that prevent the oxidative modification of low density lipoprotein (LDL) and anti-inflammatory properties that include inhibition of endothelial cell adhesion molecule expression. Results of the Framingham study revealed that a reduction in HDL levels is an independent risk factor for coronary artery disease (CAD). Accordingly, there has been considerable interest in developing new therapies that specifically elevate HDL cholesterol. However, recent evidence suggests that increasing circulating HDL cholesterol levels alone is not sufficient as a mode of HDL therapy. Rather, therapeutic approaches that increase the functional properties of HDL may be superior to simply raising the levels of HDL per se. Our laboratory has pioneered the development of synthetic, apolipoprotein mimetic peptides which are structurally and functionally similar to apoA-I but possess unique structural homology to the lipid-associating domains of apoA-I. The apoA-I mimetic peptide 4F inhibits atherogenic lesion formation in murine models of atherosclerosis. This effect is related to the ability of 4F to induce the formation of pre-β HDL particles that are enriched in apoA-I and paraoxonase. 4F also possesses anti-inflammatory and anti-oxidant properties that are independent of its effect on HDL quality per se. Recent studies suggest that 4F stimulates the expression of the antioxidant enzymes heme oxygenase and superoxide dismutase and inhibits superoxide anion formation in blood vessels of diabetic, hypercholesterolemic and sickle cell disease mice. The goal of this review is to discuss HDL-dependent and -independent mechanisms by which apoA-I mimetic peptides reduce vascular injury in experimental animal models.

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