Interferon-γ-mediated inhibition of eotaxin generation : a novel mechanism for regulation of eosinophilic inflammation
干扰素-γ介导的嗜酸性粒细胞趋化因子生成抑制:调节嗜酸性粒细胞炎症的新机制
基本信息
- 批准号:11670436
- 负责人:
- 金额:$ 2.18万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1999
- 资助国家:日本
- 起止时间:1999 至 2000
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Eotaxin is a CC chemokine specifically binds to CC chemokine receptor (CCR)3, which is preferentially expressed on eosinophils. Eotaxin is implicated in pathogenesis of selective accumulation of eosinophils, which is a characteristic aspect of allergic inflammation. We established monoclonal antibodies against eotaxin and developed a high-sensitive ELISA system. Results of our research are follows.1) Interferon-γcompletely attenuates eotaxin generation. (Miyamasu M.et al. Int. Immunol. 11 : 1001-4, 1999)2) Dermal fibroblasts represent a major cellular source of eotaxin. (Miyamasu M.et al. Cytokine 11 : 751-8, 1999)3) Level of eotaxin is increased in association with clinical parameters in induced sputum of asthmatic patients. (Yamada H.et al. Allergy 55 : 1-6, 2000)4) Interferon-γ does not affect stability of eotaxin mRNA, indicating its inhibitory role at post-translational level. (Miyamasu, M.et al. manuscript in preparation)5) Functional eosinophil CXCR4 is inducible in eosinophils under certain conditions. (Nagase et al. J.Immunol. 164 : 5935-43, 2000 ; Nagase et al. J.Allergy Clin. Immunol. 106 : 1132-9, 2000)6) Bronchial epithelium of asthmatics intensely expresses a Th-2 specific chemokine thymus and activation-related chemokine (TARC). (Sekiya T.et al. J.Immunol. 165 : 2205-13, 2000)Our results indicate that eotaxin represents a potential therapeutic target for allergic inflammation. Further study dealing molecular mechanisms underlying interferon-γ-mediated inhibition of eotaxin generation will facilitate the establishment of a novel strategy for treatment of allergic disorders.
Eotaxin 是一种 CC 趋化因子,与 CC 趋化因子受体 (CCR)3 特异性结合,该受体优先在嗜酸性粒细胞上表达。嗜酸细胞活化趋化因子参与嗜酸性粒细胞选择性积累的发病机制,这是过敏性炎症的一个特征。我们建立了针对eotaxin的单克隆抗体,并开发了高灵敏度的ELISA系统。我们的研究结果如下:1)干扰素-γ完全减弱嗜酸细胞趋化因子的产生。 (Miyamasu M.等人Int.Immunol.11:1001-4,1999)2)真皮成纤维细胞代表嗜酸细胞趋化因子的主要细胞来源。 (Miyamasu M.等人,Cytokine 11:751-8,1999)3)嗜酸细胞活化趋化因子的水平随着哮喘患者诱导痰中的临床参数而增加。 (Yamada H.et al.Allergy 55:1-6,2000)4)干扰素-γ不影响eotaxin mRNA的稳定性,表明其在翻译后水平的抑制作用。 (Miyamasu, M.et al. 手稿正在准备中)5) 功能性嗜酸性粒细胞 CXCR4 在某些条件下可在嗜酸性粒细胞中诱导。 (Nagase等人J.Immunol.164:5935-43,2000;Nagase等人J.Allergy Clin.Immunol.106:1132-9,2000)6)哮喘患者的支气管上皮强烈表达Th-2特异性趋化因子胸腺和活化相关趋化因子(TARC)。 (Sekiya T.et al. J.Immunol. 165 : 2205-13, 2000)我们的结果表明eotaxin代表了过敏性炎症的潜在治疗靶点。进一步研究干扰素γ介导的嗜酸细胞趋化因子生成抑制的分子机制将有助于建立治疗过敏性疾病的新策略。
项目成果
期刊论文数量(33)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Nagase,H.,M.Miyamasu,M.Yamaguchi,K.Hirai., et al.: "Glucocorticoids preferentially up-regulate functional CXCR4 expression in eosinophils."J.Allergy Clin.Immunol.. 106. 1132-9. (2000)
Nagase,H.,M.Miyamasu,M.Yamaguchi,K.Hirai.等人:“糖皮质激素优先上调嗜酸性粒细胞中的功能性 CXCR4 表达。”J.Allergy Clin.Immunol.. 106. 1132-9。
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Fukagawa, K., H. Saito, K. Hirai., et al.: "Presence of eotaxin in tears of atopic keratoconjunctivitis patients with severe cornel damage"J. Allergy Clin. Immunol.. 103. 1220-1221 (1999)
Fukakawa, K., H. Saito, K. Hirai., et al.:“患有严重角膜损伤的特应性角结膜炎患者的眼泪中存在嗜酸细胞趋化因子”J.
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Hirai, K., M. Iikura, M. Miyamasu, and M. Yamaguchi: "In Mast Cells and Basophils in physiology, pathology, and Host Detense"G. Marone, L.M. Lichtenstein and S.J. Galli, editors Academic press. (in press). (2000)
Hirai, K.、M. Iikura、M. Miyamasu 和 M. Yamaguchi:“肥大细胞和嗜碱性粒细胞的生理学、病理学和宿主防御”G.
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Miyamasu,M.,Y.Misaki,M.Yamaguchi,K.Hirai., et al.: "Regulation of human eotaxin generation by Th1-/Th2-derived cytokines."Int.Arch.Allergy Immunol.. 122. 54-8 (2000)
Miyamasu,M.,Y.Misaki,M.Yamaguchi,K.Hirai., et al.:“Th1-/Th2 衍生细胞因子对人嗜酸细胞趋化因子生成的调节。”Int.Arch.过敏免疫学.. 122. 54-
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Nagase, H., K. Yamamoto, Y. Morita, K. Hirai., et al.: "Expression of CXCR4 ineosinophils : functional analyses and cytokine-mediated regulation"J. Immunol.. (in press). (2000)
Nagase, H., K. Yamamoto, Y. Morita, K. Hirai., et al.:“CXCR4 嗜酸性粒细胞的表达:功能分析和细胞因子介导的调节”J.
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