Somatic Gene Transfer of Human ApoA-I Inhibits Atherosclerosis Progression in Mouse Models

Author:

Benoit Patrick1,Emmanuel Florence1,Caillaud Jean Michel1,Bassinet Laurent1,Castro Graciela1,Gallix Pierre1,Fruchart Jean Charles1,Branellec Didier1,Denèfle Patrice1,Duverger Nicolas1

Affiliation:

1. From Rhône-Poulenc Rorer–Gencell Division, Cardiovascular Department, Centre de recherche de Vitry-Alfortville, Vitry sur Seine, and Institut Pasteur (G.C., J.C.F.), Lille, France.

Abstract

Background —Apolipoprotein (apo) A-I is the major component of HDL, and it displays antiatherogenic properties. Methods and Results —The human apoA-I gene has been transferred into different mouse models by use of a recombinant adenovirus under the control of an RSV-LTR promoter (AV RSV apoA-I). Administration of AV RSV apoA-I to C57BL/6 mice resulted in moderate expression of human apoA-I for 3 weeks, leading to a transient elevation (40% at day 11 after injection) of HDL cholesterol concentration. In contrast, administration of AV RSV apoA-I to human apoA-I–transgenic mice induced a large increase of human apoA-I and HDL cholesterol concentrations (300% and 360%, respectively, at day 14 after injection) for 10 weeks, indicating that an immune response to the transgene was one major hurdle for long-term duration of expression. Recombinant adenovirus expressing human apolipoprotein A-I (AV RSV apoA-I) was also injected into human apoA-I–transgenic/apoE-deficient mice, which are prone to develop atherosclerosis. Over a 6-week period, overexpression of human apoA-I inhibited fatty streak lesion formation by 56% in comparison with control. Conclusions —Somatic gene transfer of human apoA-I prevents the development of atherosclerosis in the mouse model.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Physiology (medical),Cardiology and Cardiovascular Medicine

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