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屈朔瑶:Transcription factor RBP-J-mediated signaling regulates Basophil’s immunoregulatory function in mouse asthma model PPT讲座视频 中华医学会呼吸病学年会-2017(第十八次全国呼吸病学学术会议)
标题: Transcription factor RBP-J-mediated signaling regulates Basophil’s immunoregulatory function in mouse asthma model
讲者: 屈朔瑶
单位: 空军军医大学西京医院
播放: 2278
论文摘要: Object:Basophils (BAs) play an important role in the promotion of aberrant Th2 immune response in asthma. It is not only the effective cell, but also modulates initiation of Th2 immune responses. We earlier demonstrated that Notch signaling regulates the biological function of BAs in vitro. However, whether this pathway plays the same role in vivo is not clear. The purpose of the present study was to investigate the effect of Notch signaling on BA’s function in the regulation of allergic airway inflammation in a murine model of asthma.
Method: Bone marrow BAs were prepared by BM cell culture in the presence of rIL-3 (300 pg/mL) for 7 days, followed by isolation of the CD49b+ microbeads. The recombination signal binding protein J (RBP-J-/-) BAs were co-cultured with T cells, and the supernatant and the T cell subtypes were examined.
Results : It is indicated that disruption of the capacity of BAs for antigen presentation alongside an upregulation of the immunoregulatory function. This was possibly due to the low expression of OX40L in the RBP-J-/- BAs. BAs were adoptively transferred to OVA-sensitized recipient mice, to establish an asthma model. Lung pathology, cytokine profiles of BALF, airway hyperactivity, and the absolute number of Th1/Th2 cells in lungs were determined.
Conclusion: the RBP-J-mediated Notch signaling is critical for BA-dependent immunoregulation. Deficiency of RBP-J influences the immunoregulatory function of BAs, which include activation of T-cells and their differentiation into Th cell subtypes. Notch signaling pathway is a potential therapeutic target for BA-based immunotherapy against asthma.
 

呼吸与危重症医学科

空军军医大学西京医院

屈朔瑶,博士,副教授/副主任医师。现任陕西省医师协会呼吸医师分会总干事,陕西省医学会呼吸结核分会慢阻肺学组委员;全军呼吸专业委员会青年委员;全军呼吸专业委员会哮喘学组委员;陕西省科技厅项目评审专家。基础研究方向为哮喘免疫调控。主持国家自然科学基金2项,省部级课题2项、校院级课题6项;担任科技部重点研发计划子课题分中心负责人;发表论文30余篇,其中以第一、通讯作者发表SCI论文11篇(最高IF:7.397),副主编专著1部,申请实用新型专利2项。临床中擅长呼吸慢病的规范化管理及肺癌精准治疗。


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作者: 屈朔瑶

单位: 空军军医大学西京医院

来源: 第十四届中青年呼吸学者论坛

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作者: 屈朔瑶

单位: 空军军医大学西京医院

来源: 中华医学会呼吸病学年会-2016(第十七次全国呼吸病学学术会议)

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