The growth factor progranulin binds to TNF receptors and is therapeutic against inflammatory arthritis in mice.

The growth factor progranulin binds to TNF receptors and is therapeutic against inflammatory arthritis in mice.
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生长因子颗粒体蛋白前体与 TNF 受体结合并可治疗小鼠炎症性关节炎

DOI:
10.1126/science.1199214
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发表时间:
2011-04-22
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Liu CJ
Liu CJ
中科院分区:
其他
文献类型:
--
作者:
Tang W;Lu Y;Tian QY;Zhang Y;Guo FJ;Liu GY;Syed NM;Lai Y;Lin EA;Kong L;Su J;Yin F;Ding AH;Zanin-Zhorov A;Dustin ML;Tao J;Craft J;Yin Z;Feng JQ;Abramson SB;Yu XP;Liu CJ

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生长因子颗粒蛋白前体(PGRN)涉及胚胎发育、组织修复、肿瘤发生和炎症,但它的受体仍未确定。我们报道PGRN直接与肿瘤坏死因子受体(TNFR)结合,并干扰TNFα/TNFR相互作用。PGRN缺陷型小鼠易患胶原诱导性关节炎,而给予PGRN可逆转炎症性关节炎。Atsttrin是一种由三个PGRN片段组成的工程蛋白,表现出选择性的TNFR结合。PGRN和Atsttrin在多种关节炎小鼠模型中预防炎症,并抑制TNFα激活的细胞内信号传导。总之,这些发现表明PGRN是TNFR的一种配体,是TNFα信号传导的拮抗剂,并且在小鼠炎症性关节炎的发病机制中起关键作用。它们还为包括类风湿性关节炎在内的各种TNFα介导的病理和病症提出了新的潜在治疗干预措施。
The growth factor progranulin (PGRN) has been implicated in embryonic development, tissue repair, tumorigenesis, and inflammation, but its receptors remain unidentified. We report that PGRN bound directly to tumor necrosis factor receptors (TNFR), and disturbed the TNFα/TNFR interaction. PGRN-deficient mice were susceptible to collagen-induced arthritis, and administration of PGRN reversed inflammatory arthritis. Atsttrin, an engineered protein composed of three PGRN fragments, exhibited selective TNFR binding. PGRN and Atsttrin prevented inflammation in multiple arthritis mouse models and inhibited TNFα-activated intracellular signaling. Collectively, these findings demonstrate that PGRN is a ligand of TNFR, an antagonist of TNFα signaling and plays a critical role in the pathogenesis of inflammatory arthritis in mice. They also suggest new potential therapeutic interventions for various TNFα-mediated pathologies and conditions, including rheumatoid arthritis.
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