CXCR4/CXCL12 hyperexpression plays a pivotal role in the pathogenesis of lupus.

CXCR4/CXCL12 hyperexpression plays a pivotal role in the pathogenesis of lupus.
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DOI:
10.4049/jimmunol.0801920
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发表时间:
2009-04-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Mohan C
Mohan C
中科院分区:
其他
文献类型:
--
作者:
Wang A;Fairhurst AM;Tus K;Subramanian S;Liu Y;Lin F;Igarashi P;Zhou XJ;Batteux F;Wong D;Wakeland EK;Mohan C

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在筛选的各种表面分子中,在多个活动性肾炎狼疮小鼠模型(包括 B6.Sle1Yaa、BXSB 和 MRL.lpr)中,CXCR4 在单核细胞、中性粒细胞、B 细胞亚群和浆细胞上显着上调。 TLR 介导的信号传导和炎症细胞因子是这种增加的部分原因。 CXCR4 表达增加与功能后果相关,包括迁移增加和 B 细胞存活率增强。同时,CXCR4 的配体 CXCL12 在肾病肾脏中显着上调。在狼疮小鼠模型中,用 CXCR4 肽拮抗剂治疗可延长生存期并减少血清自身抗体、脾肿大、肾内白细胞运输和终末器官疾病。这些发现强调了 CXCR4/CXCL12 在淋巴增生性狼疮和狼疮性肾炎中的致病作用,并强调该轴作为该疾病的一个有前途的治疗靶点。
Among various surface molecules screened, CXCR4 was significantly up-regulated on monocytes, neutrophils, B-cell subsets, and plasma cells in multiple murine models of lupus with active nephritis, including B6.Sle1Yaa, BXSB, and MRL.lpr. TLR-mediated signaling and inflammatory cytokines accounted in part for this increase. Increased CXCR4 expression was associated with functional consequences, including increased migration and enhanced B-cell survival. Simultaneously, the ligand for CXCR4, CXCL12, was significantly upregulated in the nephritic kidneys. Treatment with a peptide antagonist of CXCR4 prolonged survival and reduced serum autoantibodies, splenomegaly, intra-renal leukocyte trafficking and end organ disease in a murine model of lupus. These findings underscore the pathogenic role of CXCR4/CXCL12 in lymphoproliferative lupus and lupus nephritis and highlight this axis as a promising therapeutic target in this disease.
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