GM-CSF primes cardiac inflammation in a mouse model of Kawasaki disease.

GM-CSF primes cardiac inflammation in a mouse model of Kawasaki disease.
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DOI:
10.1084/jem.20151853
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发表时间:
2016-09-19
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Wicks IP
Wicks IP
中科院分区:
其他
文献类型:
--
作者:
Stock AT;Hansen JA;Sleeman MA;McKenzie BS;Wicks IP

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利用川崎病的小鼠模型,斯托克和他的合作者发现了GM-CSF在心脏炎症中的重要作用。川崎病(KD)是发达国家儿童心脏病的主要病因。KD患者发生心脏炎症,其特征是早期中性粒细胞和单核细胞浸润,导致冠状动脉炎。尽管早期炎症过程与心脏病理有关,但调节心脏炎症和免疫细胞募集到心脏的因素仍然不清楚。在这项研究中,使用小鼠KD模型(由细胞壁白色念珠菌水溶性组分[CAWS]诱导),我们确定了粒细胞/巨噬细胞集落刺激因子(GM-CSF)在协调这些事件中的重要作用。心肌成纤维细胞在CAWS攻击后迅速产生GM-CSF,引发心脏炎症。在机制上,GM-CSF作用于局部巨噬细胞室,驱动炎症细胞因子和趋化因子的表达,而在治疗上,GM-CSF阻断可显著减少心脏病。我们的研究结果描述了GM-CSF在心脏炎症中作为必需的启动细胞因子的新作用,并暗示GM-CSF是KD治疗干预的潜在靶点。
Using a mouse model of Kawasaki disease, Stock and collaborators have discovered an essential role for GM-CSF as an instigator of cardiac inflammation. Kawasaki disease (KD) is the leading cause of pediatric heart disease in developed countries. KD patients develop cardiac inflammation, characterized by an early infiltrate of neutrophils and monocytes that precipitates coronary arteritis. Although the early inflammatory processes are linked to cardiac pathology, the factors that regulate cardiac inflammation and immune cell recruitment to the heart remain obscure. In this study, using a mouse model of KD (induced by a cell wall Candida albicans water-soluble fraction [CAWS]), we identify an essential role for granulocyte/macrophage colony-stimulating factor (GM-CSF) in orchestrating these events. GM-CSF is rapidly produced by cardiac fibroblasts after CAWS challenge, precipitating cardiac inflammation. Mechanistically, GM-CSF acts upon the local macrophage compartment, driving the expression of inflammatory cytokines and chemokines, whereas therapeutically, GM-CSF blockade markedly reduces cardiac disease. Our findings describe a novel role for GM-CSF as an essential initiating cytokine in cardiac inflammation and implicate GM-CSF as a potential target for therapeutic intervention in KD.
随着年龄的增长,逐步替代了胚胎来源的心脏巨噬细胞。
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