Eur Respir J:结节病患者产生TNF的单核细胞可预测疾病预后

2021-01-17 MedSci原创 MedSci原创

肺结节病是一种炎症性疾病,其特征表现为肉芽肿形成和临床结局不一致。肺单核细胞/单核细胞衍生细胞具有高度促炎性,可以将其作为结节病患者疾病预后的预测指标

肺结节病是一种炎症性疾病,其特征表现为肉芽肿形成和临床结局不一致。肿瘤坏死因子(TNF)是促炎性细胞因子,它可促进肉芽肿形成,高水平的TNF与进行性疾病有关。单核吞噬细胞(MNP)是TNF的产生者,对炎症刺激反应强烈。在结节病中,肺泡巨噬细胞(AMs)的作用已经得到了很好的研究。然而,MNPs还包括单核细胞/单核细胞衍生细胞和树突状细胞(DCs),尽管它们对炎症具有重要意义,但在在结节病中研究较少,近日,呼吸疾病领域权威杂志Eur Respir J上发表了一篇研究文章,该研究旨在明确肺单核细胞衍生细胞和DCs在结节病中的作用。

研究人员对108例结节病患者和30例健康对照者的血液和支气管肺泡灌洗液(BAL)中的MNP亚群进行深入的表型、功能和转录组学分析。研究人员随访了患者的临床进展情况,并评估了诊断时MNP亚群的功能,以及与2年疾病结局之间的相关性。

与健康对照者相比,结节病患者的血液和BAL中单核细胞/单核细胞衍生细胞有所增加。有趣的是,在诊断时血液中中间单核细胞与慢性疾病的进展有关。RNAseq分析显示结节病患者BAL中具有高度炎性MNP。此外,在纵向随访的患者中,在没有外源刺激的情况下,在诊断时BAL中单核细胞/单核细胞衍生细胞产生TNF的频率有所增加。与AM相比,结节病患者在诊断时产生TNF的BAL单核细胞/单核细胞衍生细胞出现的频率最高。

由此可见,该研究的数据表明,肺单核细胞/单核细胞衍生细胞具有高度促炎性,可以将其作为结节病患者疾病预后的预测指标

原始出处:

Rico Lepzien,et al.Monocytes in sarcoidosis are potent TNF producers and predict disease outcome.Eur Respir J.2021.https://erj.ersjournals.com/content/early/2021/01/08/13993003.03468-2020

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