在小鼠过敏喘模型中,HMOS 2'FL和3FL可以防止室内灰尘诱导的炎症性细胞因子释放in vitro,并降低小鼠过敏喘模型中的特定IgE产生
Marit Zuurveld1, Janna W M de Kleer1, Alinda J Berends1
1Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, Netherlands.
人类牛奶寡糖 (HMOS),特别是2'-富可酸乳糖 (2'FL) 和3-富可酸乳糖 (3FL),显示出预防过敏喘的潜力. 这些化合物在实验室中调节了免疫反应,并在小鼠模型中降低了特定的IgE,尽管没有预防呼吸道炎症.
科学领域:
- 免疫学 免疫学 免疫学
- 过敏研究 研究过敏
- 微生物组和免疫系统的发展
背景情况:
- 过敏性喘是一种严重的健康问题,通常是由家用灰尘虫 (HDM) 等过敏原引发的.
- 人类牛奶寡糖 (HMOS) 已知会影响免疫系统的发展,并可能在过敏预防中发挥作用.
研究的目的:
- 建立一个人体体外试验模型来研究HDM诱导的过敏喘.
- 调查HMOS的免疫调节作用,特别是2 - 富可酸乳糖 (2 'FL) 和3 - 富可酸乳糖 (3FL),对过敏反应.
- 评估HMOS在HDM诱导过敏喘的小鼠模型中的疗效.
主要方法:
- 开发了一个人体体外模型,涉及支气管上皮细胞 (BECs),单细胞衍生的树突细胞 (moDCs) 和暴露于HDM的T细胞.
- 研究了2'FL和3FL对这种体外模型的影响.
- 在HDM诱导的过敏喘模型中给小鼠服用2'FL和3FL.
主要成果:
- 在体外模型中,HDM暴露增加了TSLP和IL4,表明2型免疫反应,同时减少了TGFβ.
- 预化与2'FL或3FL抑制了来自BEC-DC共同培养的HDM诱导的TSLP和IL8释放.
- 与对照组相比,被食2'FL或3FL补充的小鼠表现出较低的HDM特异性IgE血清水平.
- 尽管降低了IgE,但HMOS补充剂在小鼠模型中并没有防止呼吸道炎症.
结论:
- 成功建立了一个人体体外试验模型,用于HDM敏感化,减少对动物进行试验的需求.
- 在体外和体内,HMOS (2'FL和3FL) 证明了能够将免疫反应从2型特征转移开来的能力.
- 基化HMOS需要进一步研究其在预防HDM过敏喘方面的潜力.
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