NKT cells promote antibody-induced joint inflammation by suppressing transforming growth factor beta1 production.

NKT cells promote antibody-induced joint inflammation by suppressing transforming growth factor beta1 production.
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DOI:
10.1084/jem.20041400
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发表时间:
2005-01-03
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Chung DH
Chung DH
中科院分区:
其他
文献类型:
--
作者:
Kim HY;Kim HJ;Min HS;Kim S;Park WS;Park SH;Chung DH

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尽管已知NKT细胞在自身免疫性疾病的发展中发挥保护作用,但NKT细胞在抗体诱导的关节炎症的下游事件中的功能作用仍然未知。因此,我们探索了NKT细胞在抗体诱导的关节炎中的功能作用,使用K/BxN血清转移模型。NKT细胞缺陷小鼠对关节炎的发展具有抵抗力,而给予α-半乳糖基神经酰胺(一种有效的NKT细胞激活剂)的野生型小鼠加重了关节炎。在CD 1d −/−小鼠中,发现转化生长因子(TGF)-β1在关节组织中升高,使用中和单克隆抗体阻断TGF-β1可恢复关节炎。C57 BL/6小鼠给予重组TGF-β1可减轻关节炎症。此外,将NKT细胞过继转移到CD 1d −/−小鼠中,关节炎得以恢复,TGF-β1的产生也减少了。体外实验表明,IL-4和IFN-γ参与抑制关节细胞TGF-β1的产生。从IL-4−/−或IFN-γ−/−小鼠中过继转移NKT细胞不会逆转CD 1d −/−小鼠的关节炎和TGF-β1产生。总之,产生IL-4和IFN-γ的NKT细胞通过调节TGF-β1在免疫复合物诱导的关节炎症中发挥作用。
Although NKT cells has been known to exert protective roles in the development of autoimmune diseases, the functional roles of NKT cells in the downstream events of antibody-induced joint inflammation remain unknown. Thus, we explored the functional roles of NKT cells in antibody-induced arthritis using the K/BxN serum transfer model. NKT cell–deficient mice were resistant to the development of arthritis, and wild-type mice administrated with α-galactosyl ceramide, a potent NKT cell activator, aggravated arthritis. In CD1d−/− mice, transforming growth factor (TGF)-β1 was found to be elevated in joint tissues, and the blockade of TGF-β1 using neutralizing monoclonal antibodies restored arthritis. The administration of recombinant TGF-β1 into C57BL/6 mice reduced joint inflammation. Moreover, the adoptive transfer of NKT cells into CD1d−/− mice restored arthritis and reduced TGF-β1 production. In vitro assay demonstrated that interleukin (IL)-4 and interferon (IFN)-γ were involved in suppressing TGF-β1 production in joint cells. The adoptive transfer of NKT cells from IL-4−/− or IFN-γ−/− mice did not reverse arthritis and TGF-β1 production in CD1d−/− mice. In conclusion, NKT cells producing IL-4 and IFN-γ play a role in immune complex–induced joint inflammation by regulating TGF-β1.
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