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基因表达和分子通路分析区分免疫疗法诱导的肌肉炎与自发性皮肤肌炎
Magdalena Röckel1,2,3, Luca Musella1,2,3, Corinna Preusse4,5
1Department of Dermatology, Uniklinikum Erlangen, Erlangen, Germany.
Scientific reports
|August 4, 2025
概括
免疫检查点抑制剂 (ICI) 治疗可以导致肌肉炎. 这项研究揭示了ICI诱导肌肉炎与自发性皮肤肌炎的不同基因表达特征,突出了干扰素独特的信号通路和分子相互作用.
科学领域:
- 免疫学 免疫学 免疫学
- 基因组学就是基因组学.
- 翻译医学是一种翻译医学.
背景情况:
- 免疫检查点抑制剂 (ICI),如抗PD1和抗CTLA-4,是关键的癌症疗法.
- 免疫检查点抑制剂诱导的肌肉炎 (irMyositis) 是一种罕见但严重的不良事件.
- 了解irMyositis的分子基础对于患者的管理至关重要.
研究的目的:
- 为了比较irMyositis患者,皮肤肌炎 (DM) 患者和健康对照者的骨肌中的基因表达特征.
- 为了确定分子通路和基因特征,区分irMyositis和DM.
- 阐明ICI诱导的肌肉炎症的潜在机制.
主要方法:
- 骨肌肉活检使用NanoString nCounter癌免疫分析进行了分析.
- 进行了差异基因表达 (DGE) 和基因组丰富分析 (GSEA).
- 使用网络相互作用和表达相关性分析来描述差异表达基因 (DEGs).
主要成果:
- 在各组中确定了93个差异表达基因 (DEG).
- 肌炎显示II型干扰素信号的调节,而DM显示I型干扰素信号.
- 在irMyositis中观察到不同的基因表达模式,包括FOXP3下调和CCL14上调.
- 基因表达相关性和分子相互作用区分了irMyositis和DM,特别是在干扰素反应和ICI目标相互作用方面.
结论:
- 与自发性DM相比,炎表现出独特的分子特征,特别是在干扰素通路激活方面.
- 这些发现表明ICI诱导肌肉炎的独特病理机制.
- 该研究提供了关于免疫治疗相关不良事件和潜在治疗点的见解.
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