Type-1 immunity and endogenous immune regulators predominate in the airway transcriptome during chronic lung allograft dysfunction.

Type-1 immunity and endogenous immune regulators predominate in the airway transcriptome during chronic lung allograft dysfunction.
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慢性肺同种异体移植功能障碍期间,1型免疫力和内源性免疫调节剂在气道转录组中占主导地位。

DOI:
10.1111/ajt.16360
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发表时间:
2021-06
期刊:
American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons
影响因子:
--
通讯作者:
McDyer JF
McDyer JF
中科院分区:
其他
文献类型:
--
作者:
Iasella CJ;Hoji A;Popescu I;Wei J;Snyder ME;Zhang Y;Xu W;Iouchmanov V;Koshy R;Brown M;Fung M;Langelier C;Lendermon EA;Dugger D;Shah R;Lee J;Johnson B;Golden J;Leard LE;Ellen Kleinhenz M;Kilaru S;Hays SR;Singer JP;Sanchez PG;Morrell MR;Pilewski JM;Greenland JR;Chen K;McDyer JF

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慢性肺移植功能障碍(CLAD)仍然是限制肺移植受者(LTRS)长期存活的主要并发症。对包膜免疫发病机制的了解有限,生物标记物的缺乏仍然是阻碍包膜早期检测和治疗干预的主要障碍。我们假设呼吸道转录组将反映疾病中的关键免疫学变化。我们比较了覆盖组(n=24)和非覆盖组(n=21)的呼吸道刷子衍生转录信号。使用伴随的支气管肺泡灌洗液(BAL)对24种细胞因子/趋化因子和同种免疫T细胞反应的蛋白质组进行有针对性的评估,以验证呼吸道转录组。我们观察到以1型免疫和两种内源性免疫调节因子吲哚胺2,3双加氧酶1(IDO-1)和肿瘤坏死因子受体超家族6B(TNFRSF6B)显著上调为标志的差异表达基因(DGE)的呼吸道转录特征。晚期包膜分期与更强烈的呼吸道转录组信号有关。在使用识别的签名的验证队列中,我们发现覆盖LTRS的曲线下面积(AUC)为0.77。靶向蛋白质组学分析显示,与呼吸道转录组相关的干扰素-γ、肿瘤坏死因子-α和IL-1β是主要的包膜细胞因子。呼吸道转录组提供了对包膜免疫发病机制和可能影响包膜诊断的生物标记物的新见解。
Chronic lung allograft dysfunction (CLAD) remains the major complication limiting long-term survival among lung transplant recipients (LTRs). Limited understanding of CLAD immunopathogenesis and a paucity of biomarkers remain substantial barriers for earlier detection and therapeutic interventions for CLAD. We hypothesized the airway transcriptome would reflect key immunologic changes in disease. We compared airway brush-derived transcriptomic signatures in CLAD (n = 24) versus non-CLAD (n = 21) LTRs. A targeted assessment of the proteome using concomitant bronchoalveolar lavage (BAL) fluid for 24 cytokines/chemokines and alloimmune T cell responses was performed to validate the airway transcriptome. We observed an airway transcriptomic signature of differential genes expressed (DGEs) in CLAD marked by Type-1 immunity and striking upregulation of two endogenous immune regulators: indoleamine 2, 3 dioxygenase 1 (IDO-1) and tumor necrosis factor receptor superfamily 6B (TNFRSF6B). Advanced CLAD staging was associated with a more intense airway transcriptome signature. In a validation cohort using the identified signature, we found an area under the curve (AUC) of 0.77 for CLAD LTRs. Targeted proteomic analyses revealed a predominant Type-1 profile with detection of IFN-γ, TNF-α, and IL-1β as dominant CLAD cytokines, correlating with the airway transcriptome. The airway transcriptome provides novel insights into CLAD immunopathogenesis and biomarkers that may impact diagnosis of CLAD.
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