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在巨细胞中纤维细胞生长因子受体4缺乏,通过促进M1极化来加剧实验性结肠炎
Luyao Shen1, Cong Wang2, Ran Ren3,4
1The Second Affiliated Hospital & Yuying Children's Hospital, The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325030, Zhejiang, China.
概括
纤维细胞生长因子 (FGF) -19通过FGFR4发出信号,调节炎性肠病 (IBD) 中的巨细胞两极分化和炎症. 针对这种途径可能为IBD提供新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
背景情况:
- 失调的巨细胞有助于炎症性肠病 (IBD) 的炎症.
- 纤维细胞生长因子 (FGF) -19水平在IBD患者中降低,与疾病严重程度相关.
- FGF19信号传递在IBD中巨细胞极化中的作用尚不清楚.
研究的目的:
- 为了研究FGF19信号传递对巨细胞两极分化的影响.
- 探索FGF19-FGFR4信号在IBD病变发生过程中的作用.
主要方法:
- 使用硫酸 (DSS) 诱导的小鼠结肠炎模型.
- 产生了骨髓细胞特异性FGFR4淘汰和肝脏特异性FGF19过度表达的小鼠.
- 使用各种分子和细胞技术评估大肠炎的严重程度,巨细胞两极分化和炎症基因表达.
主要成果:
- 骨髓细胞特异性FGFR4缺乏症恶化了结肠炎,并将巨细胞倾斜到M1炎症表型.
- 在巨细胞中FGFR4丧失调节了NF-κB-PTX3通路,增强了补体激活和炎症.
- 在炎症性巨细胞上,FGF19激活了FGFR4,抑制了这些通路并减少了炎症.
结论:
- FGF19-FGFR4信号传递对于调节巨细胞两极分化和IBD的发病过程至关重要.
- 这种信号通路代表了IBD治疗的潜在治疗标.
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