多omics概况揭示了与急性胰腺炎在早期阶段的PD-L1检查点相关的免疫微环境变化
Di Wu1, Wenhao Cai2, Zehao Wu1
1Pancreas Center, First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu, China.
Biochemical and biophysical research communications
|February 8, 2025
概括
急性胰腺炎涉及免疫失衡,具有更多的先天性免疫细胞和更少的适应性免疫细胞. 在早期疾病阶段,PD-1/PD-L1通路对于管理这种免疫反应至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 胰腺炎的发病因子
背景情况:
- 急性胰腺炎 (AP) 引发局部炎症,涉及亲和抗炎反应.
- 像PD-1/PD-L1这样的免疫检查点对于调节免疫激活和防止损伤至关重要.
- 了解这些机制是管理AP的关键.
研究的目的:
- 研究急性胰腺炎中的免疫机制.
- 分析免疫检查点在AP病变发生中的作用.
- 检查小鼠和人类AP的早期免疫变化.
主要方法:
- 综合的多omics分析,包括单细胞RNA测序,数字空间分析和CyTOF.
- 使用素诱导AP小鼠模型 (CER-AP).
- 分析了来自人类AP患者的大量RNA测序数据.
主要成果:
- 在分析方法中观察到一致的免疫细胞分布.
- 鉴定出一种与增加的先天性免疫细胞 (中性粒细胞,巨细胞,单细胞) 和降低适应性免疫细胞 (T细胞) 的不平衡.
- 在多种细胞类型中发现了PD-1/PD-L1通路的显著改变,并在调节性T细胞中减少了PD-L1的表达.
结论:
- 早期的AP表现出明显的免疫失衡,有利于天生的免疫力而不是适应性免疫力.
- PD-L1检查点是AP中免疫恒温的关键调节器.
- PD-L1在急性胰腺炎的发病过程中发挥着重要作用.
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