Abstract

IL-15 is an essential cytokine for the development of NK and CD8+T cells and also involved in activation of inflammation in macrophages. Therefore, we hypothesized that IL-15 may affect the development of atherosclerosis via regulating immune/inflammatory cells. To test this we generated apoE KO mice that either overexpressed (il-15TgapoE-/-) or lacked either one (il-15+/-apoE-/-) or both copies (il-15-/-apoE-/-) of the IL-15 gene. Deficiency of IL-15 substantially reduced atherosclerosis in spite of increased plasma lipoprotein cholesterol levels.

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