识别牛奶表位体,以表征和量化过敏儿童的疾病特异性T细胞
Sloan A Lewis1, Aaron Sutherland1, Ferran Soldevila1
1La Jolla Institute for Immunology, San Diego, Calif.
The Journal of allergy and clinical immunology
|August 21, 2023
概括
儿童牛奶过敏可以通过识别特定的T细胞来诊断. 研究人员在牛奶过敏 (CMA) 患者中发现了明显的T细胞变化,这表明了新的诊断标志物.
科学领域:
- 免疫学 免疫学 免疫学
- 过敏研究 研究过敏
- 儿科医学 儿科医学
背景情况:
- 牛奶 (CM) 过敏是一种在幼儿中普遍存在的食物过敏.
- 目前用于CM过敏的诊断方法不可靠或资源密集.
研究的目的:
- 为了调查牛奶过敏 (CMA) 患者的过敏原特异性T细胞是否表现出独特的品质或数量,用于诊断潜力.
- 确定不同的T细胞表型作为CMA的潜在生物标志物.
主要方法:
- 利用来自147名儿科患者的外周血液单核细胞 (PBMC).
- 开发了一种反应性CM表位体的池,以在体外刺激T细胞.
- 采用流细胞计和单细胞RNA/TCR测序来表征抗原特异性的CD4记忆T细胞.
主要成果:
- 在CMA与非CMA受试者中的CM特异性T细胞的转录程序和克隆性中发现了显著的差异.
- 在CMA患者中观察到CM + FOXP3 +细胞的百分比增加,具有明显的基因表达和化学因受体配置文件.
- 使用流细胞计测量量量化CM + CD127-CD25+细胞,显示CMA受试者的百分比增加,表明诊断潜力.
结论:
- 在CM特异性T细胞的表型差异与牛奶过敏有关.
- 增加的CM + FOXP3 + 细胞显示为过敏状态的诊断标记物具有前途.
- 这些发现可能有助于监测疾病进展和免疫疗法的疗效.
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