Abstract:
:The T helper 9 (Th9) cell transcriptional network is formed by an equilibrium of signals induced by cytokines and antigen presentation. Here we show that, within this network, two interferon regulatory factors (IRF), IRF1 and IRF4, display opposing effects on Th9 differentiation. IRF4 dose-dependently promotes, whereas IRF1 inhibits, IL-9 production. Likewise, IRF1 inhibits IL-9 production by human Th9 cells. IRF1 counteracts IRF4-driven Il9 promoter activity, and IRF1 and IRF4 have opposing function on activating histone modifications, thus modulating RNA polymerase II recruitment. IRF1 occupancy correlates with decreased IRF4 abundance, suggesting an IRF1-IRF4-binding competition at the Il9 locus. Furthermore, IRF1 shapes Th9 cells with an interferon/Th1 gene signature. Consistently, IRF1 restricts the IL-9-dependent pathogenicity of Th9 cells in a mouse model of allergic asthma. Thus our study reveals that the molecular ratio between IRF4 and IRF1 balances Th9 fate, thus providing new possibilities for manipulation of Th9 differentiation.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Campos Carrascosa L,Klein M,Kitagawa Y,Lückel C,Marini F,König A,Guralnik A,Raifer H,Hagner-Benes S,Rädler D,Böck A,Kang C,Lohoff M,Garn H,Schaub B,Berberich-Siebelt F,Sakaguchi S,Bopp T,Huber Mdoi
10.1038/ncomms15366subject
Has Abstractpub_date
2017-05-12 00:00:00pages
15366issn
2041-1723pii
ncomms15366journal_volume
8pub_type
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