空间转录学识别了与成人皮肤肌炎癌症相关的免疫-流体
Ksenia S Anufrieva1, Neda Shahriari2, Ce Gao1
1Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital at Harvard Medical School, Boston, MA, USA.
bioRxiv : the preprint server for biology
|April 1, 2025
概括
成人发病皮肤肌肉肌肉炎 (DM) 的皮肤病变显示出不同的免疫细胞模式. 与癌症相关的DM具有分散的免疫细胞,而非癌症的DM表现出密集的髓状透,影响血管健康.
科学领域:
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
- 基因组学就是基因组学.
背景情况:
- 成人发病性皮肤肌炎 (DM) 是一种自身免疫性疾病,其特征是肌肉炎症和独特的皮肤皮疹.
- 糖尿病与潜在的恶性瘤有显著的关联.
- 了解DM皮肤中的细胞微环境对于诊断和治疗至关重要.
研究的目的:
- 执行成年期开始的DM皮肤病变的综合空间和单细胞转录组学分析.
- 为了比较DM中的免疫和 stromal 利基与皮肤性红斑狼 (CLE).
- 识别与癌症相关的与非癌症相关的DM相关的独特细胞和分子特征.
主要方法:
- 综合空间和单细胞转录组学分析.
- 在DM和CLE皮肤病变之间进行比较分析.
- 免疫细胞透物和 stromal 组件的识别和表征.
主要成果:
- 在DM亚型中确定了独特的免疫和 stromal 利基.
- 与癌症相关的DM皮肤显示出分散的免疫透物 (巨细胞,CD8 + T细胞,血细胞,B细胞) 与保存的血管系统.
- 非癌症的DM皮肤表现出密集的髓状透体 (中性粒细胞,单细胞,巨细胞),IL1B和CXCL10水平升高,导致肌体重塑和血管相关纤维细胞损失.
- 在pDC存在的非癌症DM中出现了特定的细胞对 (PD-L1+ mregDCs和激活的Tregs).
- 脑膜炎独特地显示IFN-β表达,与CLE共享干扰素特征.
结论:
- 这项研究提供了成人发病的DM免疫和肌体细胞的第一个全面的空间地图.
- 独特的细胞特征区分与癌症相关的与非癌症相关的DM,提供潜在的诊断生物标志物.
- 这些发现突出了骨髓系衍生型细胞因子和组织缺氧在驱动DM病原和 stromal 变化的作用.
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