在肥胖症中,胰腺免疫格局的动态重塑
bioRxiv : the preprint server for biology
|August 12, 2025
概括
肥胖会改变胰腺免疫细胞,将巨细胞转移到促炎状态. 这种巨细胞-T细胞相互作用可能导致慢性炎症和与肥胖相关的疾病.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢疾病 代谢疾病
- 胃肠病学 胃肠病学
背景情况:
- 肥胖是胰腺疾病 (如糖尿病,癌症和胰腺炎) 的重要危险因素.
- 肥胖影响胰腺免疫平衡的确切机制尚未完全理解.
研究的目的:
- 研究肥胖如何影响人类胰腺的免疫微环境.
- 确定特定的免疫细胞种群及其在肥胖与非肥胖个体之间的相互作用.
主要方法:
- 来自器官捐赠者的人类胰腺免疫细胞的空间,转录和功能概况.
- 单细胞测序以表征胰腺巨细胞子集.
- 在胰腺组织中分析T细胞和巨细胞相互作用.
主要成果:
- 肥胖与异位胰腺内存T细胞 (TRM) 的密度增加有关.
- 确定了两个不同的胰腺巨细胞子集:FOLR2+CD11c- (胎儿衍生,免疫调节) 和FOLR2-CD11c+ (单细胞衍生,促炎).
- 在肥胖症中,有转向更高比例的亲炎性FOLR2-CD11c+巨细胞的转变,这些巨细胞与TRM和炎症表皮相互作用.
结论:
- 肥胖会改变胰腺免疫格局,有利于促炎性巨细胞子集.
- 巨细胞T细胞电路和免疫上皮相互作用被确定为肥胖症慢性胰腺炎症的关键驱动因素.
- 这些发现为各种与肥胖相关的胰腺疾病提供了潜在的统一机制.
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