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球状皮虫体中的IgG自身抗体直接诱导皮细胞中的一种致病性MyD88依赖的炎症反应
bioRxiv : the preprint server for biology
|November 21, 2024
概括
球状皮虫 (BP) 的IgG自身抗体触发皮肤细胞的炎症,揭示了角质细胞.
科学领域:
- 免疫皮肤学 免疫皮肤学
- 分子生物学分子生物学
- 病理学 病理学 病理学
背景情况:
- 球状皮虫 (BP) 涉及自身抗体,但它们对角质细胞的直接影响和对疾病病理学的贡献尚不清楚.
- 了解角质细胞对BP自身抗体的反应对于阐明疾病机制至关重要.
研究的目的:
- 研究BP-IgG自身抗体对角质细胞的直接影响.
- 确定MyD88信号在状细胞对BP自身抗体的反应中的作用.
- 评估状细胞衍生的炎症对整体血压病理学的贡献.
主要方法:
- 接受BP患者IgG治疗的初级角质细胞接受了多重免疫测试和大量RNA-seq.
- 空间转录和单细胞RNA-seq (scRNA-seq) 分析了患病和控制皮肤.
- 使用了MyD88缺乏的角质细胞和Krt14特定的Myd88淘汰赛小鼠模型.
主要成果:
- BP-IgG诱导了角质细胞的促炎和蛋白质溶解反应,释放细胞因子,化学因子,C1s,DPP4和MMP-9.
- 皮肤泡的转录形状与BP-IgG处理的角质细胞非常相似.
- 角质细胞中的MyD88缺乏减少了IL-8,IL-24和MMP-9的表达.
- 在小鼠中,类细胞特异性的MyD88淘汰会降低血压疾病的严重程度和全身炎症标志物.
结论:
- 角质细胞直接响应BP-IgG自身抗体,通过亲炎症和蛋白质溶解信号传递.
- 角质细胞中的MyD88依赖性通路在BP病变发生过程中起着重要作用.
- 类细胞衍生的炎症有助于型皮虫的全身炎症反应.
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