在患有牛皮关节炎的患者的外周血液中,I型干扰素通路和DNA损伤积累
George E Fragoulis1,2, Panagiotis A Ntouros1, Adrianos Nezos3
1Joint Academic Rheumatology Program, First Department of Propaedeutic and Internal Medicine, National and Kapodistrian University of Athens Medical School, Athens, Greece.
Frontiers in immunology
|December 21, 2023
概括
牛皮关节炎 (PsA) 显示DNA损伤增加,但没有预期的1型干扰素 (IFN-I) 途径激活. 这种意想不到的IFN-I下调可能在PsA发展中发挥作用,可能受到其他炎症类细胞因子的影响.
科学领域:
- 免疫学 免疫学 免疫学
- 类风湿病学 类风湿病学
- 分子生物学分子生物学
背景情况:
- 在一些类风湿性疾病中观察到异常的DNA损伤反应和1型干扰素 (IFN-I) 途径失调.
- 在牛皮关节炎 (PsA) 中研究这些机制对于理解疾病发病过程至关重要.
研究的目的:
- 调查DNA损伤与牛皮关节炎 (PsA) 中的1型干扰素 (IFN-I) 途径之间的关联.
- 探索PsA患者关键炎性细胞因子的表达.
主要方法:
- 使用性彗星测定方法量化了PsA患者和健康对照的外周血液单核细胞 (PBMC) 的DNA损伤.
- 使用实时PCR测量IFN-I诱导基因 (IFIT1,MX1,IFI44) 和炎症细胞因子 (IL1β,IL6,TNF,IL17A,IL23A) 的RNA表达.
- 根据IFN-I响应基因的复合正常表达计算IFN-I得分.
主要成果:
- 与健康个体相比,PsA患者的DNA损伤水平显著更高 (增加约两倍).
- 与C-反应蛋白和IL6RNA表达相关的DNA损伤.
- 与预期相反,PsA患者的IFN-I得分明显较低,DNA损伤和IFN-I通路活性之间没有相关性.
- 在具有较高IL1β或TNF/IL23A表达的PsA亚组中观察到较低的IFN-I得分.
结论:
- 在PsA中,DNA损伤与炎症有关,但与IFN-I通路的诱导无关.
- 在PsA中观察到的IFN-I通路的下调,虽然是意想不到的,但可能有助于疾病的发病,并可能被其他细胞因子调节.
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