Fenofibrate inhibited the differentiation of T helper 17 cells in vitro.

Fenofibrate inhibited the differentiation of T helper 17 cells in vitro.
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非诺贝特在体外抑制 T 辅助细胞 17 的分化。

DOI:
10.1155/2012/145654
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发表时间:
2012
期刊:
影响因子:
2.9
通讯作者:
Wang X
Wang X
中科院分区:
医学3区
文献类型:
--
作者:
Zhou Z;Sun W;Liang Y;Gao Y;Kong W;Guan Y;Feng J;Wang X

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不受控制的T细胞活性介导自身免疫性和炎性疾病,如多发性硬化症、炎性肠病、类风湿性关节炎、1型糖尿病和动脉粥样硬化。最近的研究表明,产生白细胞介素-17(IL-17)的T辅助性17细胞(Th 17细胞)的活性增强在自身免疫性疾病和炎性疾病中起重要作用。先前的论文已经揭示了过氧化物酶体增殖物激活受体α(PPARα)的降脂合成配体非诺贝特(fenofibrate)可以抑制动脉粥样硬化和一些非脂质相关的自身免疫性疾病,如自身免疫性结肠炎和多发性硬化。然而,非诺贝特和Th 17细胞之间缺乏联系。在本研究中,我们假设非诺贝特抑制Th 17细胞的分化。结果表明,非诺贝特在体外可抑制转化生长因子-β(TGF-β)和IL-6诱导的Th 17细胞分化。然而,其他PPARα配体如WY 14643、GW 7647和苯扎贝特对Th 17分化没有任何影响,表明非诺贝特的这种作用可能是不依赖于PPARα的。此外,我们的数据表明,非诺贝特减少IL-21的生产和STAT 3的激活,在Th 17分化的关键信号。因此,通过改善Th 17细胞的分化,非诺贝特可能对自身免疫和炎症性疾病有益。
Uncontrolled activity of T cells mediates autoimmune and inflammatory diseases such as multiple sclerosis, inflammatory bowel diseases, rheumatoid arthritis, type 1 diabetes, and atherosclerosis. Recent findings suggest that enhanced activity of interleukin-17 (IL-17) producing T helper 17 cells (Th17 cells) plays an important role in autoimmune diseases and inflammatory diseases. Previous papers have revealed that a lipid-lowering synthetic ligand of peroxisome proliferator-activated receptor α (PPARα), fenofibrate, alleviates both atherosclerosis and a few nonlipid-associated autoimmune diseases such as autoimmune colitis and multiple sclerosis. However, the link between fenofibrate and Th17 cells is lacking. In the present study, we hypothesized that fenofibrate inhibited the differentiation of Th17 cells. Our results showed that fenofibrate inhibited transforming growth factor-β (TGF-β) and IL-6-induced differentiation of Th17 cells in vitro. However, other PPARα ligands such as WY14643, GW7647 and bezafibrate did not show any effect on Th17 differentiation, indicating that this effect of fenofibrate might be PPARα independent. Furthermore, our data showed that fenofibrate reduced IL-21 production and STAT3 activation, a critical signal in the Th17 differentiation. Thus, by ameliorating the differentiation of Th17 cells, fenofibrate might be beneficial for autoimmunity and inflammatory diseases.
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