Divergent pro- and antiinflammatory roles for IL-23 and IL-12 in joint autoimmune inflammation.

Divergent pro- and antiinflammatory roles for IL-23 and IL-12 in joint autoimmune inflammation.
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DOI:
10.1084/jem.20030896
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发表时间:
2003-12-15
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Cua DJ
Cua DJ
中科院分区:
其他
文献类型:
--
作者:
Murphy CA;Langrish CL;Chen Y;Blumenschein W;McClanahan T;Kastelein RA;Sedgwick JD;Cua DJ

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白细胞介素(IL)23是由IL-12的p19亚基和p40亚基组成的异二聚体细胞因子。IL-23通过与记忆T细胞和炎性巨噬细胞上的新型受体(IL-23R)的结合来影响这些细胞的功能。最近对IL-12和IL-23对中枢神经系统自身免疫性炎症的贡献的分析表明,IL-23而不是IL-12是必需的细胞因子。使用仅缺乏IL-12(p35 −/−)或IL-23(p19 −/−)的基因靶向小鼠,我们表明IL-23的特异性缺失具有保护作用,而IL-12的缺失会加剧胶原诱导的关节炎。IL-23基因靶向小鼠没有出现疾病的临床体征,并且对关节和骨病理学的发展具有完全抵抗力。耐药性与产生IL-17的CD4 + T细胞的缺乏相关,尽管胶原特异性、产生干扰素-γ的辅助性T细胞1的诱导正常。相比之下,IL-12缺陷型p35 −/−小鼠产生更多的IL-17产生CD4 + T细胞,以及在患病小鼠的受影响组织中促炎性肿瘤坏死因子、IL-1 β、IL-6和IL-17的mRNA表达升高。本文提供的数据表明,IL-23是终末期关节自身免疫性炎症的重要促进剂,而IL-12矛盾地介导对自身免疫性炎症的保护。
Interleukin (IL) 23 is a heterodimeric cytokine composed of a p19 subunit and the p40 subunit of IL-12. IL-23 affects memory T cell and inflammatory macrophage function through engagement of a novel receptor (IL-23R) on these cells. Recent analysis of the contribution of IL-12 and IL-23 to central nervous system autoimmune inflammation demonstrated that IL-23 rather than IL-12 was the essential cytokine. Using gene-targeted mice lacking only IL-12 (p35−/−) or IL-23 (p19−/−), we show that the specific absence of IL-23 is protective, whereas loss of IL-12 exacerbates collagen-induced arthritis. IL-23 gene-targeted mice did not develop clinical signs of disease and were completely resistant to the development of joint and bone pathology. Resistance correlated with an absence of IL-17–producing CD4+ T cells despite normal induction of collagen-specific, interferon-γ–producing T helper 1 cells. In contrast, IL-12–deficient p35−/− mice developed more IL-17–producing CD4+ T cells, as well as elevated mRNA expression of proinflammatory tumor necrosis factor, IL-1β, IL-6, and IL-17 in affected tissues of diseased mice. The data presented here indicate that IL-23 is an essential promoter of end-stage joint autoimmune inflammation, whereas IL-12 paradoxically mediates protection from autoimmune inflammation.
DOI: 10.1016/s1074-7613(00)00070-4
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