Three TNFR-binding domains of PGRN act independently in inhibition of TNF-alpha binding and activity.

Three TNFR-binding domains of PGRN act independently in inhibition of TNF-alpha binding and activity.
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DOI:
10.2741/4274
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发表时间:
2014-06-01
期刊:
Frontiers in bioscience (Landmark edition)
影响因子:
--
通讯作者:
Liu C
Liu C
中科院分区:
其他
文献类型:
--
作者:
Tian Q;Zhao Y;Mundra JJ;Gonzalez-Gugel E;Jian J;Uddin SM;Liu C

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PGRN先前被报道与TNF受体(TNFR)结合,并用于治疗炎性关节炎。在这里,我们提出了进一步的证据,证明PGRN抑制TNFα的结合和活性,并阐明了PGRN和经典TNFα结合抑制剂之间抑制TNFα的不同机制。此外,我们提供的证据表明,PGRN的三个TNFR结合域独立作用于TNFR结合。此外,改变atstrin(由这些tnfr结合域组成的pgrn衍生分子)中三个tnfr结合域的顺序,并不影响其在胶原诱导的炎症性关节炎和人TNF-α转基因小鼠模型中的抗炎和抗TNF活性。综上所述,这些发现为PGRN/TNFR相互作用和PGRN介导的抗炎活性在各种炎症性疾病和病症中提供了额外的分子基础。
PGRN was previously reported to bind to TNF receptors (TNFR) and is therapeutic against inflammatory arthritis. Here we present further evidences demonstrating the PGRN inhibition of TNFα binding and activity, and clarifying the distinct mechanisms underlying TNFα inhibition between PGRN and classic TNFα-binding inhibitors. In addition, we present evidences indicating that three TNFR binding domains of PGRN act independently in binding to TNFR. Furthermore, changing the order of three TNFR-binding domains in Atsttrin, an PGRN-derived molecule composed of these TNFR-binding domains, does not affect its anti-inflammatory and anti-TNF activities in both collagen-induced inflammatory arthritis and human TNF-α transgenic mouse model. Taken together, these findings provide the additional molecular basis underlying PGRN/TNFR interaction and PGRN-mediated anti-inflammatory activity in various inflammatory diseases and conditions.
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发表时间: 2004
影响因子: 4.9
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