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Updated: May 9, 2025

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Basophil Activation Test for Allergy Diagnosis
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在口服免疫疗法期间定期接触过敏原会在患有卵子过敏的儿童细胞再刺激后改变转录体内生免疫反应
V I Hinkkanen1, T Savinko2, K Palosuo2
1Human Microbiome (HUMI) Research Program, Medical Faculty, University of Helsinki, Helsinki, Finland.
概括
对蛋过敏的口服免疫疗法 (OIT) 增加了免疫活性并抑制了炎症,在完全与部分无敏儿童中具有不同的基因表达特征. 天生的免疫力是OIT成功的关键.
科学领域:
- 免疫学 免疫学 免疫学
- 过敏学 过敏学
- 文字转录学 (Transcriptomics) 是一个学科.
背景情况:
- 口服免疫疗法 (OIT) 是对食物过敏的一种有前途的治疗方法.
- 由OIT引起的脱敏的分子机制尚未完全理解.
- 在OIT期间调查转录变化可以阐明脱敏路径.
研究的目的:
- 了解卵子过敏的OIT期间免疫机制和转录变化.
- 为了确定完全和部分无敏患者之间的基因表达的差异.
主要方法:
- 从40名患有蛋过敏的儿童收集的外周血液单核细胞 (PBMC),在0,3个月和8个月接受OIT.
- 用蛋过敏原提取物刺激PBMC并使用微阵列分析基因表达.
- 鉴定了差异表达基因 (DEGs),并进行了基因丰富分析.
主要成果:
- 45%的患者在经过8个月的OIT后实现了完全脱敏.
- 过敏原刺激显示,随着时间的推移,DEGs显著增加,在8个月内达到759个DEGs.
- OIT导致了促炎途径的下调,包括IL-4和IL-13信号传递,以及完全脱敏的患者明显的基线免疫反应.
结论:
- OIT增强了一般的免疫活动,并促进了免疫抑制,由降低调节基因的增加表明.
- 完全和部分不敏感的个体之间的转录组形状不同.
- 天生的免疫力似乎在实现OIT诱导的无敏化方面发挥着至关重要的作用.
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