增长因子progranulin与TNF受体结合,对小鼠的炎症性关节炎有治疗作用
Wei Tang1, Yi Lu, Qing-Yun Tian
1Department of Orthopaedic Surgery, New York University School of Medicine and NYU Hospital for Joint Diseases, New York, NY 10003, USA.
概括
普格拉努林 (PGRN) 与瘤亡因子受体 (TNFRs) 结合,作为TNFα信号传递的对手. 这一发现为关节炎等炎症性疾病提供了新的治疗途径.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 进子素 (PGRN) 是一种参与发育,修复和炎症的生长因子.
- 对于PGRN的特定受体仍然未被确定.
- 瘤亡因子α (TNFα) 信号传递是炎症性疾病的关键途径.
研究的目的:
- 为了确定progranulin (PGRN) 的受体.
- 研究PGRN在炎症性关节炎中的作用.
- 探索PGRN及其衍生物作为TNFα介导疾病的潜在治疗方法.
主要方法:
- 生物化学测试以评估PGRN与瘤亡因子受体 (TNFRs) 的结合.
- 使用PGRN缺乏的小鼠评估对原诱导关节炎的易感性的研究.
- 在炎症性关节炎的小鼠模型中给予PGRN和PGRN衍生蛋白 (Atsttrin).
- 对TNFα激活的细胞内信号通路的分析.
主要成果:
- 普格拉努林 (PGRN) 直接与瘤亡因子受体 (TNFRs) 结合,破坏TNFα-TNFR相互作用.
- 缺少PGRN的小鼠对原诱导的关节炎的敏感性增加.
- 在关节炎模型中,PGRN和Atsttrin的使用改善了炎症.
- PGRN和Atsttrin抑制了TNFα激活的细胞内信号传递.
结论:
- 进激素 (PGRN) 作为TNFR的配体和TNFα信号的对手.
- 在小鼠炎症性关节炎的发病过程中,PGRN起着至关重要的作用.
- PGRN及其工程变体代表了TNFα相关的炎症状况,包括类风湿性关节炎的有前途的治疗候选者.
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