Research ArticleAsthma

TH2 and TH17 inflammatory pathways are reciprocally regulated in asthma

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Science Translational Medicine  19 Aug 2015:
Vol. 7, Issue 301, pp. 301ra129
DOI: 10.1126/scitranslmed.aab3142

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A tale of two asthmas

Classifying diseases according to symptoms is rapidly becoming a thing of the past. Targeted therapeutics have shown us that sets of symptoms can be caused by different pathogenic mechanisms. Now, Choy et al. demonstrate that asthma can be divided into three immunological clusters: TH2-high, TH17-high, and TH2/17-low. The TH2-high and TH17-high clusters were inversely correlated in patients. Moreover, neutralizing one signature promoted the other in a mouse model of asthma. These data suggest that combination therapies targeting both pathways may better treat asthmatic individuals.