MMP—3/TIMP—1、Th17/Treg在类风湿关节炎中的作用及其临床意义
2018-08-29崔静王晓霞王洪郝振叶郭莹莹陈慧芳何佳莉
崔静 王晓霞 王洪 郝振叶 郭莹莹 陈慧芳 何佳莉
[摘要] 多种研究表明,基质金属蛋白酶-3(matrix metalloproteinase,MMP-3)的高表达在类风湿关节炎(rheumatoid arthritis,RA)滑膜、软骨和软骨下骨的细胞外间质的降解中充当重要角色。金属蛋白酶组织抑制剂-1(tissue inhibitors of metalloproteinase1,TIMP-1)与MMP-3特异结合,抑制 MMP-3的活性,MMP-3/TIMP-1平衡对RA的临床结局有着重要作用。新的研究发现,抑制 Th17细胞分化,维持Treg细胞(regulatory T cell)活性,调节Th17/Treg平衡,可为治疗RA提供新的作用靶点。进一步研究发现,RA早期患者外周血MMP-3与白介素17(Interleukin 17,IL-17)表达明显升高,两者呈正相关,Treg的下降可影响MMP-3/TIMP-1的平衡。本文将对MMP-3/TIMP-1和Th17/Treg在RA中的作用机制及其临床意义作一综述。
[关键词] 类风湿关节炎;基质金属蛋白酶3;金属蛋白酶组织抑制剂-1;Th17细胞;Treg细胞;肿瘤坏死因子α拮抗剂
[中图分类号] R593.2 [文献标识码] A [文章编号] 1673-9701(2018)13-0160-04
The role and clinical significance of MMP-3/TIMP-1, Th17/Treg in rheumatoid arthritis
CUI Jing WANG Xiaoxia WANG Hong HAO Zhenye GUO Yingying CHEN Huifang HE Jiali
Department of Rheumatology, the Second Hospital of Shanxi Medical University, Taiyuan 030001, China
[Abstract] Various studies have shown that the high expression of matrix metalloproteinase-3 (MMP-3) is involved and play an important role in the degradation of the extracellular matrix of synovium, cartilage and subchondral bone of rheumatoid arthritis(RA). Tissue inhibitor of metalloproteinase 1 (TIMP-1) binds specifically to MMP-3 and inhibits the activity of MMP-3. The balance of MMP-3 / TIMP-1 plays an important role in the clinical outcome of RA. New research found that inhibiting Th17 cell differentiation,maintaining Treg(regulatory T cell) activity and regulating Th17/Treg balance may provide novel targets for the treatment of RA. Further study found that the expression of MMP-3 and Interleukin 17(IL-17) in the peripheral blood of RA patients was significantly increased, the two were positively correlated, and the decrease of Treg could affect the balance of MMP-3/TIMP-1. This article will review the mechanism of MMP-3/TIMP-1 and Th17 /Treg in RA and its clinical significance.
[Key words] Rheumatoid arthritis; Matrix metalloproteinase 3; Tissue inhibitor of metalloproteinase-1; Th17 cells; Treg cells; Tumor necrosis factor α antagonist
類风湿关节炎是以对称性多关节破坏为主要表现的自身免疫性疾病,主要侵犯滑膜组织,引起关节软骨、韧带、肌腱及骨质的破坏。RA患者MMP-3在关节骨、软骨及细胞外间质的降解中均扮演重要角色,可作为预测RA早期滑膜损害及骨破坏的指标,也是评价药物疗效的炎性指标。作为MMP-3的特异性结合产物,TIMP-1与MMP-3结合后,可调节MMP-3所致的滑膜细胞炎性浸润及血管入侵,从而调控MMP-3的炎症损伤临床结局,MMP-3/TIMP-1平衡对RA的发生发展及预后发挥重要作用[1-2]。Th17细胞和Treg细胞也在RA的进展中充当重要角色。Th17细胞释放促炎症因子IL-17,诱导MMPs和破骨细胞生成,从而促进骨滑膜炎性细胞浸润、骨和软骨损伤破坏。Treg细胞分泌白介素10(IL-10)、TGF-β抑制T细胞及抗原呈递细胞,维持自身免疫耐受,抑制炎症反应。……
