Deficiency of Th17 cells in hyper IgE syndrome due to mutations in STAT3.

Deficiency of Th17 cells in hyper IgE syndrome due to mutations in STAT3.
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DOI:
10.1084/jem.20080218
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发表时间:
2008-07-07
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Cook MC
Cook MC
中科院分区:
其他
文献类型:
--
作者:
Ma CS;Chew GY;Simpson N;Priyadarshi A;Wong M;Grimbacher B;Fulcher DA;Tangye SG;Cook MC

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高免疫球蛋白E综合征(HIES)是一种原发性免疫缺陷病,其特征是对少数几种感染具有异常且严重的易感性,最常见的是金黄色葡萄球菌和白色念珠菌感染。近期研究已在大多数接受研究的HIES患者中发现了STAT3基因突变。尽管已明确HIES的遗传病因,但该疾病病理特征的潜在机制仍有待阐明。在此,我们证实携带杂合STAT3突变的CD4⁺T细胞在体内和体外均无法产生分泌白细胞介素17(即辅助性T细胞[Th]17)的细胞,原因是无法表达足够水平的Th17特异性转录调节因子视黄酸相关孤儿受体γt。由于Th17细胞富含针对真菌抗原具有特异性的细胞,我们的研究结果可能解释了HIES患者感染易感性的模式。此外,这些结果强调了Th17应答在正常宿主防御常见病原体金黄色葡萄球菌和白色念珠菌过程中的重要性。
Hyper–immunoglobulin E syndrome (HIES) is a primary immune deficiency characterized by abnormal and devastating susceptibility to a narrow spectrum of infections, most commonly Staphylococcus aureus and Candida albicans. Recent investigations have identified mutations in STAT3 in the majority of HIES patients studied. Despite the identification of the genetic cause of HIES, the mechanisms underlying the pathological features of this disease remain to be elucidated. Here, we demonstrate a failure of CD4+ T cells harboring heterozygous STAT3 mutations to generate interleukin 17–secreting (i.e., T helper [Th]17) cells in vivo and in vitro due to a failure to express sufficient levels of the Th17-specific transcriptional regulator retinoid-related orphan receptor γt. Because Th17 cells are enriched for cells with specificities against fungal antigens, our results may explain the pattern of infection susceptibility characteristic of patients with HIES. Furthermore, they underscore the importance of Th17 responses in normal host defense against the common pathogens S. aureus and C. albicans.
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