由MIF驱动的纤维细胞衍生CCL2通过巨细胞极化调节促进关节囊纤维化
Yuxin Zhang1, Jiling Ye2, Yuxiang He3
1Department of Rehabilitation Medicine, Hainan Western Central Hospital, Danzhou, Hainan 571700, China; Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; Shanghai Key Laboratory of Orthopedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China.
International immunopharmacology
|February 3, 2026
概括
巨细胞迁移抑制因子 (MIF) 在创伤后关节收缩 (PTJC) 中驱动炎症和纤维化,通过增加来自纤维细胞的CC动机化学基因连接体2 (CCL2) 生产. 抑制MIF可以降低CCL2,减轻PTJC的进展.
科学领域:
- 生物医学科学 生物医学科学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 创伤后关节收缩 (PTJC) 涉及持续的关节囊炎和纤维化.
- 在PTJC中,CC动机化学因子连接体2 (CCL2) 对于持续的炎症至关重要.
- 在PTJC生产CCL2的监管机制仍然不清楚.
研究的目的:
- 研究巨细胞迁移抑制因子 (MIF) 在促进纤维细胞中CCL2的产生中的作用.
- 为了确定MIF是否调节PTJC的关节囊纤维化.
- 阐明MIF介导的CCL2生产所涉及的信号通路.
主要方法:
- 在PTJC模型中同步测量CCL2和MIF水平.
- 在病变部位使用MIF抑制剂 (4-IPP).
- 使用关节囊纤维细胞的体外研究来评估MIF通过CD74受体和JNK/CREB信号传递对CCL2产生的影响.
- 分析纤维细胞衍生CCL2对通过CC动机化基因受体2 (CCR2) 的巨细胞极化 (M2表型) 的影响.
主要成果:
- PTJC诱导了CCL2和MIF水平的同步升高.
- 抑制MIF显著降低了CCL2表达.
- 通过CD74和JNK/CREB通路的激活,MIF直接促进了纤维细胞中CCL2的产生.
- 来自纤维细胞的CCL2促进了M2巨细胞的两极分化,放大了炎症和纤维化.
- 抑制MIF活性降低了CCL2并预防了纤维化.
结论:
- 通过促进纤维细胞衍生CCL2的产生,MIF在加剧PTJC中发挥着关键作用.
- 这种MIF-CCL2轴通过巨细胞极化扩大慢性炎症和纤维化.
- 准MIF-CCL2通路为PTJC和相关疾病提供了潜在的治疗策略.
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