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. 2010 Nov 15;185(10):5820-7.
doi: 10.4049/jimmunol.1000116. Epub 2010 Oct 15.

A critical function of Th17 proinflammatory cells in the development of atherosclerotic plaque in mice

Qi Gao  1 , Yang Jiang, Tian Ma, Faliang Zhu, Fei Gao, Pin Zhang, Chun Guo, Qun Wang, Xiaoyan Wang, Chunhong Ma, Yun Zhang, Wanjun Chen, Lining Zhang
Affiliations

A critical function of Th17 proinflammatory cells in the development of atherosclerotic plaque in mice

Qi Gao et al. J Immunol. .

Abstract

Considerable evidence supports that the CD4(+) T cell-mediated immune response contributes to the development of atherosclerotic plaque. However, the effects of Th17 cells on atherosclerosis are not thoroughly understood. In this study, we evaluated the production and function of Th17 and Th1 cells in atherosclerotic-susceptible ApoE(-/-) mice. We observed that the proportion of Th17 cells, as well as Th1, increased in atherosclerotic ApoE(-/-) mice compared with nonatherosclerotic wild-type littermates. In ApoE(-/-) mice with atherosclerosis, the expression of IL-17 and retinoic acid-related orphan receptor γt was substantially higher in the arterial wall with plaque than in the arterial wall without plaque. Increased Th17 cells were associated with the magnitude of atherosclerotic plaque in ApoE(-/-) mice. Importantly, treatment of ApoE(-/-) mice with neutralizing anti-IL-17 Ab dramatically inhibited the development of atherosclerotic plaque, whereas rIL-17 application significantly promoted the formation of atherosclerotic plaque. These data demonstrate that Th17 cells play a critical role in atherosclerotic plaque formation in mice, which may have implications in patients with atherosclerosis.

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