An essential role for TH2-type responses in limiting acute tissue damage during experimental helminth infection.

An essential role for TH2-type responses in limiting acute tissue damage during experimental helminth infection.
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DOI:
10.1038/nm.2628
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发表时间:
2012-01-15
期刊:
影响因子:
82.9
通讯作者:
--
中科院分区:
医学1区
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--
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蠕虫可诱导强烈的Th2型免疫反应,这种反应能够介导蠕虫的排出,但这种反应在控制多细胞寄生虫在重要组织中移行所造成的急性组织损伤方面的重要性仍不确定。我们使用了一种蠕虫感染模型,在该模型中,寄生线虫幼虫短暂地穿过肺部,造成损伤,导致出血和炎症。我们的研究结果表明,白细胞介素 - 17(IL - 17)最初的升高导致了炎症和肺部损伤,而随后的白细胞介素 - 4受体(IL - 4R)信号传导控制了IL - 17的升高,增强了胰岛素样生长因子1和白细胞介素 - 10(IL - 10)的表达,并刺激了M2细胞的发育,这些都有助于组织损伤的快速修复。这些研究表明,Th2型免疫反应在蠕虫感染期间介导急性伤口愈合中起着至关重要的作用。
Helminths induce potent Th2-type immune responses that can mediate worm expulsion but the importance of this response in controlling acute tissue damage caused by migrating multi-cellular parasites through vital tissues remains uncertain. We used a helminth infection model where parasitic nematode larvae migrate transiently through the lung causing damage resulting in hemorrhage and inflammation. Our findings showed initial elevations in IL-17 contributed to inflammation and lung damage while subsequent IL-4R signaling controlled IL-17 elevations, enhanced expression of insulin-like growth factor 1 and IL-10 and stimulated development of M2 cells, each of which contributed to rapid resolution of tissue damage. These studies indicate an essential role for the Th2-type immune response in mediating acute wound healing during helminth infection.
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