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产生IL-17A的NKp44(-) 3组先天性淋巴细胞积聚在Familial Adenomatous Polyposis十二指腺组织中

Kim M Kaiser¹, Jan Raabe¹, Michael ToVinh¹

¹Department of Internal Medicine I, University Hospital Bonn, Bonn, Germany.

Nature communications

|April 25, 2025

概括

家族性腺瘤多重症 (FAP) 涉及十二指肠内先天性淋巴状3型细胞 (ILC3s) 的增加. 这些细胞通过FAP的活性氧物种 (ROS) 生产促进DNA损伤和瘤发生.

科学领域:

胃肠病学胃肠病学
免疫学免疫学免疫学
在瘤学瘤学.

背景情况:

家族性腺瘤多重症 (FAP) 是一种遗传性疾病,导致十二指甲腺瘤.
双胞胎表型变异性在FAP中表明非遗传因素,如免疫系统,参与其中.

研究的目的:

研究免疫细胞,特别是先天性淋巴细胞3型细胞 (ILC3s) 在FAP中的十二指腺瘤形成中的作用.
阐明ILC3s可能导致FAP瘤发生的机制.

主要方法:

从FAP患者的十二指肠组织分析量化IL-17A(+) NKp44(-) ILC3s.
免疫细胞数量与基因表达水平的相关性分析 (IL1B,IL23A,DLL4).
使用十二指管器官的体外研究来评估IL-17A刺激对基因表达,蛋白质水平和活性氧物种 (ROS) 生产的影响.

主要成果:

在FAP患者的十二指肠中观察到IL-17A(+) NKp44(-) ILC3s的增加,特别是在腺瘤和癌症中.
升高的IL1B,IL23A和DLL4转录水平与ILC3积累相关.
在FAP有机体中IL-17A刺激导致DUOX2/DUOXA2表达,Duox2蛋白和ROS产生增加,导致DNA损伤.

结论:

IL-17A(+) NKp44(-) ILC3s在FAP十二指肠中积累,并与前瘤源信号通路有关.
这些免疫细胞可能通过诱导十二指肠表皮中的ROS生产和DNA损伤来促进瘤性转化.

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