抗体介导肺移植拒绝中的气道分子特征
Rashmi Prava Mohanty1, Daniel R Calabrese2, Kaveh Moghbeli3
1University of California, San Francisco, CA.
概括
呼吸道炎症基因签名可以识别肺移植接受者的抗体介导排斥 (AMR). 呼吸道炎症基因评分 (AI2) 有效诊断AMR并预测存活率,提供了一个新的预后工具.
科学领域:
- 免疫学 免疫学 免疫学
- 肺部医学 肺部医学
- 基因组学就是基因组学.
背景情况:
- 严重的抗体中介排斥 (AMR) 是慢性肺异位移植功能障碍 (CLAD) 和肺移植后死亡的主要原因.
- 目前对抗药物耐药性的诊断方法缺乏精度,需要开发新的生物标志物.
研究的目的:
- 研究呼吸道炎症基因特征作为潜在的生物标志物,以区分AMR与肺移植接受者的对照.
- 评估气道炎症基因评分 (AI2) 与AMR临床特征和患者存活率的关联.
主要方法:
- 来自两个移植中心的16例AMR病例和39例对照组的小气道刷的RNA测序.
- 与补充激活,mTOR信号传递和NK细胞介导损伤相关的基因特征的比较分析.
- 差异基因表达和途径分析以确定AMR的分子特征.
主要成果:
- 抗菌耐药性病例显示出呼吸道炎症的转录证据,补充和NK细胞通路的升调.
- 在AMR病例中,AI2得分显著高于AMR病例,并且与AMR组织学,捐赠者特异性抗体,补体结合和急性移植功能障碍相关.
- 较高的AI2得分独立地与较差的无再移植生存率有关.
结论:
- 肺移植小气道中的AMR主要显示细胞排斥的分子特征,而不是孤立的幽默排斥.
- 气道刷转录组学,特别是AI2评分,显示出作为AMR特征和预后的有价值工具的希望.
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