Blockade of Interleukin-17A Results in Reduced Atherosclerosis in Apolipoprotein E–Deficient Mice
- 20 April 2010
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Circulation
- Vol. 121 (15), 1746-1755
- https://doi.org/10.1161/circulationaha.109.924886
Abstract
Background— T cells play an important role during the immune response that accompanies atherosclerosis. To date, the role for interleukin (IL)-17A in atherogenesis is not well defined. Here, we tested the hypothesis that atherosclerosis-prone conditions induce the differentiation of IL-17A–producing T cells, which in turn promote atherosclerosis. Methods and Results— IL-17A was found to be elevated in the plasma and tissues of apolipoprotein E–deficient (Apoe−/−) mice. IL-17A–expressing T cells were significantly increased in the aortas, spleen, and lamina propria of aged Apoe−/− mice compared with age-matched C57BL/6 mice. IL-17A+ T cells resided in both adventitia and aortas of aged Apoe−/− mice fed a chow diet. Elevated levels of IL-17A+ T cells were also detected in the aortas of 21-week-old Apoe−/− mice fed a Western diet for 15 weeks. IL-17A+ T cells were characterized as predominantly CD4+ T helper 17 (Th17) cells and γδ+ T cells. Blockade of IL-17A in Apoe−/− mice by use of adenovirus-produced IL-17 receptor A reduced plaque burden in Apoe−/− mice fed a Western diet for 15 weeks. In addition, the treatment diminished circulating IL-6 and granulocyte colony-stimulating factor levels and limited CXCL1 expression and macrophage content within the aortas. Conversely, IL-17A treatment of whole aorta isolated from Apoe−/− mice promoted aortic CXCL1 expression and monocyte adhesion in an ex vivo adhesion assay. Conclusions— These results demonstrate that atherosclerosis-prone conditions induce the differentiation of IL-17A–producing T cells. IL-17A plays a proatherogenic inflammatory role during atherogenesis by promoting monocyte/macrophage recruitment into the aortic wall.This publication has 36 references indexed in Scilit:
- The Th17/Treg functional imbalance during atherogenesis in ApoE−/− miceCytokine, 2010
- The Lamina Adventitia Is the Major Site of Immune Cell Accumulation in Standard Chow-Fed Apolipoprotein E–Deficient MiceArteriosclerosis, Thrombosis, and Vascular Biology, 2005
- Interleukin-17 as a Recruitment and Survival Factor for Airway Macrophages in Allergic Airway InflammationAmerican Journal of Respiratory Cell and Molecular Biology, 2005
- Role of IL-17A, IL-17F, and the IL-17 Receptor in Regulating Growth-Related Oncogene-α and Granulocyte Colony-Stimulating Factor in Bronchial Epithelium: Implications for Airway Inflammation in Cystic FibrosisThe Journal of Immunology, 2005
- Interleukin-17 Family Members and InflammationImmunity, 2004
- Requirement of Interleukin 17 Receptor Signaling for Lung Cxc Chemokine and Granulocyte Colony-Stimulating Factor Expression, Neutrophil Recruitment, and Host DefenseThe Journal of Experimental Medicine, 2001
- IL-17 Stimulates Granulopoiesis in Mice: Use of an Alternate, Novel Gene Therapy-Derived Method for In Vivo Evaluation of CytokinesThe Journal of Immunology, 1998
- Hypercholesterolemia is associated with a T helper (Th) 1/Th2 switch of the autoimmune response in atherosclerotic apo E-knockout mice.JCI Insight, 1998
- Atherosclerosis, autoimmunity, and vascular‐associated lymphoid tissueThe FASEB Journal, 1997
- ApoE-deficient mice develop lesions of all phases of atherosclerosis throughout the arterial tree.Arteriosclerosis and Thrombosis: A Journal of Vascular Biology, 1994