Dendritic cell-derived IL-27 p28 regulates T cell program in pathogenicity and alleviates acute graft-versus-host disease.

Dendritic cell-derived IL-27 p28 regulates T cell program in pathogenicity and alleviates acute graft-versus-host disease.
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树突状细胞来源的 IL-27 p28 调节 T 细胞程序的致病性并减轻急性移植物抗宿主病

DOI:
10.1038/s41392-022-01147-z
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发表时间:
2022-09-16
影响因子:
39.3
通讯作者:
Wu, Depei
Wu, Depei
中科院分区:
医学1区
文献类型:
--
作者:
Gong, Huanle;Ma, Shoubao;Chen, Jia;Yang, Bingyu;Liu, Shuangzhu;Liu, Xin;Han, Jingjing;Wu, Xiaojin;Lei, Lei;Yin, Zhinan;Sun, Hongjian;Yu, Di;Liu, Haiyan;Xu, Yang;Wu, Depei

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白细胞介素27(IL-27)是由EB病毒诱导的3和p28组成的异源二聚体细胞因子,是一种具有促炎和抗炎双重特性的多效性细胞因子。然而,IL-27在急性移植物抗宿主病中的确切作用尚未完全了解。在这项研究中,利用树突状细胞(DC)中IL-27 p28缺陷的小鼠,我们证明了IL-27 p28缺陷导致Treg细胞功能受损和效应T细胞应答增强,对应于小鼠中aGVHD的加重。此外,使用单细胞RNA测序,我们发现IL-27 p28的损失损害Treg细胞产生并促进胸腺中IL-1 R2 +TIGIT+致病性CD 4 +T细胞处于稳态。在机制上,IL-27 p28缺陷促进STAT 1磷酸化和Th 1细胞应答,导致Treg细胞分化和功能的抑制。最后,血清中具有高水平IL-27 p28的患者显示出比具有低水平IL-27 p28的患者显著降低的II-IV级aGVHD的发生率和更有利的总体存活率。因此,我们的研究结果表明,DC衍生的IL-27 p28在aGVHD的发病机制中的保护作用,通过调节胸腺发育过程中的Treg/Teff细胞平衡。IL-27 p28可能是预测人类移植后aGVHD发展的有价值的标志物。
Interleukin 27 (IL-27), a heterodimeric cytokine composed of Epstein-Barr virus-induced 3 and p28, is a pleiotropic cytokine with both pro-and anti-inflammatory properties. However, the precise role of IL-27 in acute graft-versus-host disease is not yet fully understood. In this study, utilizing mice with IL-27 p28 deficiency in dendritic cells (DCs), we demonstrated that IL-27 p28 deficiency resulted in impaired Treg cell function and enhanced effector T cell responses, corresponding to aggravated aGVHD in mice. In addition, using single-cell RNA sequencing, we found that loss of IL-27 p28 impaired Treg cell generation and promoted IL-1R2+TIGIT+pathogenic CD4+T cells in the thymus at a steady state. Mechanistically, IL-27 p28 deficiency promoted STAT1 phosphorylation and Th1 cell responses, leading to the inhibition of Treg cell differentiation and function. Finally, patients with high levels of IL-27 p28 in serum showed a substantially decreased occurrence of grade II-IV aGVHD and more favorable overall survival than those with low levels of IL-27 p28. Thus, our results suggest a protective role of DC-derived IL-27 p28 in the pathogenesis of aGVHD through modulation of the Treg/Teff cell balance during thymic development. IL-27 p28 may be a valuable marker for predicting aGVHD development after transplantation in humans.
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