Abstract:
:MicroRNAs (miRNAs) exert powerful effects on immunological function by tuning networks of target genes that orchestrate cell activity. We sought to identify miRNAs and miRNA-regulated pathways that control the type 2 helper T cell (TH2 cell) responses that drive pathogenic inflammation in asthma. Profiling miRNA expression in human airway-infiltrating T cells revealed elevated expression of the miRNA miR-19a in asthma. Modulating miR-19 activity altered TH2 cytokine production in both human and mouse T cells, and TH2 cell responses were markedly impaired in cells lacking the entire miR-17∼92 cluster. miR-19 promoted TH2 cytokine production and amplified inflammatory signaling by direct targeting of the inositol phosphatase PTEN, the signaling inhibitor SOCS1 and the deubiquitinase A20. Thus, upregulation of miR-19a in asthma may be an indicator and a cause of increased TH2 cytokine production in the airways.
journal_name
Nat Immunoljournal_title
Nature immunologyauthors
Simpson LJ,Patel S,Bhakta NR,Choy DF,Brightbill HD,Ren X,Wang Y,Pua HH,Baumjohann D,Montoya MM,Panduro M,Remedios KA,Huang X,Fahy JV,Arron JR,Woodruff PG,Ansel KMdoi
10.1038/ni.3026subject
Has Abstractpub_date
2014-12-01 00:00:00pages
1162-70issue
12eissn
1529-2908issn
1529-2916pii
ni.3026journal_volume
15pub_type
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