替代分离和全球转录组变化与人类外周血液单核细胞中的LPS刺激相关
bioRxiv : the preprint server for biology
|November 26, 2025
概括
脂聚糖 (LPS) 触发免疫反应,这项研究显示,替代拼接 (AS) 显著影响炎症途径. 关键免疫基因和非编码RNA中的AS为免疫疾病提供了潜在的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 脂多糖 (LPS) 是先天免疫的关键激活剂,广泛用于模拟炎症反应.
- 虽然已知转录性变化,但替代拼接 (AS) 在LPS诱导的炎症中的作用在很大程度上未被描述.
研究的目的:
- 研究替代拼接对人类外周血液单核细胞 (PBMCs) 中对LPS刺激的全转录组反应的影响.
主要方法:
- 深度RNA测序是在用LPS刺激的健康捐赠者的PBMC上进行的.
- 在转录组中进行了差异基因表达和替代拼接分析.
主要成果:
- 确定了490个差异表达的基因和46个扰乱的KEGG通路,证实了已知的LPS反应并揭示了新的通路.
- 替代拼接分析突出了对Toll类受体信号传递,PI3K/AKT信号传递和巨细胞极化的影响.
- 在关键免疫基因 (例如MyD88,TLR4) 和调节性长非编码RNA (例如MALAT1,PVT1) 中发现了替代拼接事件.
结论:
- 这是第一个在PBMC中对LPS的反应中表征全基因组替代拼接的研究.
- 替代拼接是对LPS的炎症反应中至关重要的调节机制.
- 研究结果表明,AS事件可能代表免疫相关疾病的新疗法标.
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