Integrating the skin and blood transcriptomes and serum proteome in hidradenitis suppurativa reveals complement dysregulation and a plasma cell signature.

Integrating the skin and blood transcriptomes and serum proteome in hidradenitis suppurativa reveals complement dysregulation and a plasma cell signature.
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DOI:
10.1371/journal.pone.0203672
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发表时间:
2018
期刊:
影响因子:
3.7
通讯作者:
Lowes MA
Lowes MA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Hoffman LK;Tomalin LE;Schultz G;Howell MD;Anandasabapathy N;Alavi A;Suárez-Fariñas M;Lowes MA

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化脓性汗腺炎 (HS) 是一种毛皮脂腺顶浆分泌单位的慢性皮肤病,其特征是严重炎症和生活质量受损。 HS 的发病机制仍不清楚。为了确定 HS 皮肤和血液转录组以及 HS 血液蛋白质组,对先前发表的研究中的患者数据进行了分析和整合,其中包括中度至重度 HS 患者 (n = 17) 与健康志愿者 (n = 10) 的比较。该分析利用经验贝叶斯方法来确定差异表达基因 (DEG)(倍数变化 (FCH) >2.0 和错误发现率 (FDR) <0.05)和差异表达蛋白 (DEP)(FCH>1.5,FDR<0.05)。在 HS 皮肤转录组中(病变皮肤与非病变皮肤相比),存​​在丰富的免疫球蛋白、抗菌肽和干扰素特征。与非病变皮肤相比,与Notch信号传导和干扰素通路相关的基因组在病变皮肤中被不同程度地激活。对 HS 皮肤转录组的 CIBERSORT 分析显示,病变皮肤中浆细胞的比例显着增加。在 HS 皮肤和血液转录组以及 HS 血液蛋白质组中,与补体系统相关的基因集发生显着变化(FDR<0.05),补体特异性 DEG 和 DEP 失调。这些数据表明,病变皮肤中存在过度的免疫反应,可能是对共生皮肤细菌的存在作出反应,并提出了这可能是热射病疾病进展的重要驱动因素的可能性。
Hidradenitis suppurativa (HS) is a chronic skin disease of the pilo-sebaceous apocrine unit characterized by significant inflammation and an impaired quality of life. The pathogenesis of HS remains unclear. To determine the HS skin and blood transcriptomes and HS blood proteome, patient data from previously published studies were analysed and integrated from a cohort of patients with moderate to severe HS (n = 17) compared to healthy volunteers (n = 10). The analysis utilized empirical Bayes methods to determine differentially expressed genes (DEGs) (fold change (FCH) >2.0 and false discovery rate (FDR) <0.05), and differentially expressed proteins (DEPs) (FCH>1.5, FDR<0.05). In the HS skin transcriptome (lesional skin compared to non-lesional skin), there was an abundance of immunoglobulins, antimicrobial peptides, and an interferon signature. Gene-sets related to Notch signalling and Interferon pathways were differentially activated in lesional compared to non-lesional skin. CIBERSORT analysis of the HS skin transcriptome revealed a significantly increased proportion of plasma cells in lesional skin. In the HS skin and blood transcriptomes and HS blood proteome, gene-sets related to the complement system changed significantly (FDR<0.05), with dysregulation of complement-specific DEGs and DEPs. These data point towards an exaggerated immune response in lesional skin that may be responding to commensal cutaneous bacterial presence and raise the possibility that this may be an important driver of HS disease progression.
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