Abstract:
:Epidermal infiltration of neutrophils is a hallmark of psoriasis, where their activation leads to release of neutrophil extracellular traps (NETs). The contribution of NETs to psoriasis pathogenesis has been unclear, but here we demonstrate that NETs drive inflammatory responses in skin through activation of epidermal TLR4/IL-36R crosstalk. This activation is dependent upon NETs formation and integrity, as targeting NETs with DNase I or CI-amidine in vivo improves disease in the imiquimod (IMQ)-induced psoriasis-like mouse model, decreasing IL-17A, lipocalin2 (LCN2), and IL-36G expression. Proinflammatory activity of NETs, and LCN2 induction, is dependent upon activation of TLR4/IL-36R crosstalk and MyD88/nuclear factor-kappa B (NF-κB) down-stream signaling, but independent of TLR7 or TLR9. Notably, both TLR4 inhibition and LCN2 neutralization alleviate psoriasis-like inflammation and NETs formation in both the IMQ model and K14-VEGF transgenic mice. In summary, these results outline the mechanisms for the proinflammatory activity of NETs in skin and identify NETs/TLR4 as novel therapeutic targets in psoriasis.
journal_name
Front Immunoljournal_title
Frontiers in immunologyauthors
Shao S,Fang H,Dang E,Xue K,Zhang J,Li B,Qiao H,Cao T,Zhuang Y,Shen S,Zhang T,Qiao P,Li C,Gudjonsson JE,Wang Gdoi
10.3389/fimmu.2019.00746subject
Has Abstractpub_date
2019-04-05 00:00:00pages
746issn
1664-3224journal_volume
10pub_type
杂志文章abstract::Strategies targeting T cells are the cornerstone of immunosuppression after solid organ transplantation. The transcription factor NF-κB is a key regulator of downstream T-cell activation and induction of inflammatory mediators; its full activation via antigen receptor engagement requires both the scaffold and the prot...
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journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
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journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
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journal_title:Frontiers in immunology
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doi:10.3389/fimmu.2016.00071
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journal_title:Frontiers in immunology
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journal_title:Frontiers in immunology
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更新日期:2013-08-26 00:00:00
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