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IL-17-producing ST2(+) group 2 innate lymphoid cells play a pathogenic role in lung inflammation

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机构: [1]Chinese Acad Sci, Shanghai Inst Nutr & Hlth, CAS Key Lab Tissue Microenvironm & Tumor, Univ Chinese Acad Sci,Shanghai Inst Biol Sci, Shanghai, Peoples R China [2]Fudan Univ, Sch Basic Med Sci, Dept Immunol, Shanghai, Peoples R China [3]Tsinghua Univ, Inst Immunol, Beijing, Peoples R China [4]Tsinghua Univ, Dept Basic Med Sci, Sch Med, Beijing, Peoples R China [5]Univ Florida, Coll Vet Med, Dept Infect Dis & Immunol, Gainesville, FL USA [6]Shanghai Jiao Tong Univ, Sch Med, Tongren Hosp, Shanghai 200336, Peoples R China [7]Shanghai Jiao Tong Univ, Sch Med, Shanghai Key Lab Tumor Microenvironm & Inflammat, Shanghai Inst Immunol, Shanghai, Peoples R China
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关键词: Asthma group 2 innate lymphoid cells IL-17

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Background: IL-17 plays a pathogenic role in asthma. ST2(-) inflammatory group 2 innate lymphoid cells (ILC2s) driven by IL-25 can produce IL-17, whereas ST2(+) natural ILC2s produce little IL-17. Objective: We characterized ST2(+) IL-17(+) ILC2s during lung inflammation and determined the pathogenesis and molecular regulation of ST2(+)IL-17(+) ILC2s. Methods: Lung inflammation was induced by papain or IL-33. IL-17 production by lung ILC2s from wild-type, Rag1(-/-), Rorc(gfp/gfp), and aryl hydrocarbon receptor (Ahr)(-/-) mice was examined by using flow cytometry. Bone marrow transfer experiments were performed to evaluate hematopoietic myeloid differentiation primary response gene-88 (MyD88) signaling in regulating IL-17 production by ILC2s. mRNA expression of IL-17 was analyzed in purified naive ILC2s treated with IL-33, leukotrienes, and inhibitors for nuclear factor of activated T cells, p38, c-Jun N-terminal kinase, or nuclear factor kappa light-chain enhancer of activated B cells. The pathogenesis of IL-17(+) ILC2s was determined by transferring wild-type or Il17(-/-) ILC2s to Rag2(-/-) Il2rg(-/-) mice, which further induced lung inflammation. Finally, expression of 106 ILC2 signature genes was compared between ST2(+)IL-17(+) ILC2s and ST2(+)IL-17(-) ILC2s. Results: Papain or IL-33 treatment boosted IL-17 production from ST2(+) ILC2s (referred to by us as ILC2(17)s) but not ST2(-) ILC2s. Ahr, but not retinoic acid receptor-related orphan receptor gamma t, facilitated the production of IL-17 by ILC2(17)s. The hematopoietic compartment of MyD88 signaling is essential for ILC2(17) induction. IL-33 works in synergy with leukotrienes, which signal through nuclear factor of activated T-cell activation to promote IL-17 in ILC2(17)s. Il17(-/-) ILC2s were less pathogenic in lung inflammation. ILC2(17)s concomitantly expressed IL-5 and IL-13 but expressed little GM-CSF. Conclusion: During lung inflammation, IL-33 and leukotrienes synergistically induce ILC2(17)s. ILC2(17)s are a highly pathogenic and unexpected source for IL-17 in lung inflammation.

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出版当年[2018]版:
大类 | 1 区 医学
小类 | 1 区 过敏 1 区 免疫学
最新[2023]版:
大类 | 1 区 医学
小类 | 1 区 过敏 1 区 免疫学
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出版当年[2017]版:
Q1 IMMUNOLOGY Q1 ALLERGY
最新[2023]版:
Q1 ALLERGY Q1 IMMUNOLOGY

影响因子: 最新[2023版] 最新五年平均 出版当年[2017版] 出版当年五年平均 出版前一年[2016版] 出版后一年[2018版]

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第一作者机构: [1]Chinese Acad Sci, Shanghai Inst Nutr & Hlth, CAS Key Lab Tissue Microenvironm & Tumor, Univ Chinese Acad Sci,Shanghai Inst Biol Sci, Shanghai, Peoples R China
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通讯机构: [1]Chinese Acad Sci, Shanghai Inst Nutr & Hlth, CAS Key Lab Tissue Microenvironm & Tumor, Univ Chinese Acad Sci,Shanghai Inst Biol Sci, Shanghai, Peoples R China [6]Shanghai Jiao Tong Univ, Sch Med, Tongren Hosp, Shanghai 200336, Peoples R China [7]Shanghai Jiao Tong Univ, Sch Med, Shanghai Key Lab Tumor Microenvironm & Inflammat, Shanghai Inst Immunol, Shanghai, Peoples R China [*1]Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, New Lifesciences Building, Rm 1724, No. 320 Yueyang Road, Shanghai 20031, China [*2]Shanghai Jiao Tong University School of Medicine, B5-1202, 280 South Chongqing Road, Shanghai 200025, China [*3]Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200336, China
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