A critical epitope in CD147 facilitates memory CD4(+) T-cell hyper-activation in rheumatoid arthritis.

A critical epitope in CD147 facilitates memory CD4(+) T-cell hyper-activation in rheumatoid arthritis.
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DOI:
10.1038/s41423-018-0012-4
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发表时间:
2019-06
影响因子:
24.1
通讯作者:
Zhu P
Zhu P
中科院分区:
医学1区
文献类型:
--
作者:
Guo N;Ye S;Zhang K;Yu X;Cui H;Yang X;Lin P;Lv M;Miao J;Zhang Y;Han Q;Zhang R;Chen Z;Zhu P

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CD4+CD45RO+记忆T (Tm)细胞的异常活化在类风湿关节炎(RA)的发病过程中起重要作用。先前的研究表明,CD147参与t细胞活化。然而,目前尚不清楚CD147是否参与RA患者的异常tm细胞激活。在这项研究中,我们证明了CD147在来自RA患者的Tm细胞中主要上调。抗cd147 mAb 5A12特异性抑制tm细胞的活化和增殖,并进一步抑制破骨细胞的发生。使用结构-功能方法,我们描述了5A12和CD147之间的界面。这使我们能够确定两个关键残基,Lys63和Asp65,作为RA治疗的潜在靶点,因为双突变K63A/D65A抑制tm细胞的激活,模仿5A12的中和作用。本研究不仅为“CD147-Tm/破骨细胞-RA链”提供了潜在的预防和治疗RA或其他t细胞介导的自身免疫性疾病的理论依据,也为相关药物的设计和开发提供了新的靶点。
The abnormal activation of CD4+CD45RO+ memory T (Tm) cells plays an important role in the pathogenesis of rheumatoid arthritis (RA). Previous studies have shown that CD147 participates in T-cell activation. However, it remains unclear whether CD147 is involved in abnormal Tm-cell activation in RA patients. In this study, we demonstrated that CD147 was predominantly upregulated in Tm cells derived from RA patients. The anti-CD147 mAb 5A12 specifically inhibited Tm-cell activation and proliferation and further restrained osteoclastogenesis. Using a structural–functional approach, we depicted the interface between 5A12 and CD147. This allowed us to identify two critical residues, Lys63 and Asp65, as potential targets for RA treatment, as the double mutation K63A/D65A inhibited Tm-cell activation, mimicking the neutralization by 5A12. This study provides not only a theoretical basis for a “CD147-Tm/Osteoclast-RA chain” for the potential prevention and treatment of RA or other T-cell-mediated autoimmune diseases but also a new target for related drug design and development.
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