炎症介导的纤维细胞激活和免疫失调在缺乏原VII的皮肤
Morgan Anderson-Crannage1,2, Alex M Ascensión3, Olga Ibanez-Solé3
1Department of Pediatrics, New York Medical College, Valhalla, NY, United States.
Frontiers in immunology
|October 9, 2023
概括
在衰退性缩性表皮溶解 (RDEB) 中的慢性炎症会产生免疫抑制的皮肤微环境. 这项研究揭示了细胞代谢和免疫细胞激活的改变,可能导致RDEB进展和癌症风险.
科学领域:
- 皮肤病学 皮肤病学
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
背景情况:
- 炎症在瘤发生过程中至关重要,但其在瘤前组织微环境中的作用不太清楚.
- 这是一种遗传性皮肤疾病,涉及慢性伤害,炎症和皮肤状细胞癌 (cSCC) 的风险增加.
研究的目的:
- 使用单细胞RNA测序 (scRNAseq) 在RDEB小鼠模型中研究皮肤微环境.
- 确定RDEB皮肤中潜在的炎症和免疫抑制的细胞和分子机制.
主要方法:
- 皮肤细胞的单细胞RNA测序 (scRNAseq) 来自RDEB小鼠模型.
- 对基因表达,免疫细胞种群,纤维细胞分化和细胞因子概况的分析.
- 炎症性细胞因子的量化和信号通路的评估 (NF-κB,JAK/STAT).
主要成果:
- RDEB皮肤微环境显示了新陈代谢的改变,血管生成的增强,超增殖的角质细胞和激活的免疫细胞 (中性粒细胞,朗格汉斯细胞).
- 纤维细胞群体表现出向肌纤维细胞和炎症性癌症相关纤维细胞 (iCAF) 类似的表型的分化.
- 在免疫细胞上增加PD-1/PD-L1表达和动态细胞因子释放 (IL-1α,TGF-β1,TNF,IL-6,IFN-γ) 表明免疫抑制状态.
结论:
- 慢性炎症,特别是由IL-1驱动的,在RDEB中导致免疫抑制的皮肤微环境.
- 这些发现表明了RDEB疾病进展的机制,并突出了管理炎症和癌症风险的潜在治疗点.
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