对食物敏感的儿科患者显示结肠牛奶蛋白特异的Th2细胞
Karina E Canziani1, María Carolina Ruiz1, Martín R Candia1
1Instituto de Estudios Inmunológicos y Fisiopatológicos, CONICET - Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, asociado Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, Boulevard 120 N°1489, 1900, La Plata, Argentina.
Journal of leukocyte biology
|July 21, 2023
概括
研究人员隔离了母牛.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
背景情况:
- 食物过敏,特别是牛奶蛋白质过敏,影响着全球很大一部分儿童.
- 食物过敏个体的炎症性结直肠多体表现出2型免疫环境,IL-13和IL-4水平升高,并且是IgE合成的场所.
研究的目的:
- 从结肠炎症息肉中鉴定和分离牛奶蛋白特异性T细胞.
- 研究这些T细胞和相关化学因子在结肠内的过敏反应中的作用.
主要方法:
- 隔离和特征的T细胞系和克隆从聚合物自己的片.
- 在体外评估T细胞增殖和细胞因子释放,以应对牛奶蛋白.
- 分析聚组织和T细胞中的化学因受体 (CCR9) 和配体 (CCL25) 表达.
主要成果:
- 从聚体中分离出的牛奶蛋白特异性T细胞显示出抗原特异性增殖和Th2细胞因子释放 (IL-4,IL-5,IL-13).
- 所有分离的T细胞克隆都是CD4+的,并且显示Th2细胞因子分泌量增加,但干扰素-马的水平没有变化.
- 在牛奶特异性T细胞中观察到高CCR9表达,CCL25在聚组织中存在,但不在相邻的粘膜中.
结论:
- 牛奶蛋白特异性CD4+Th2细胞成功地从结肠炎症息肉中分离出来.
- CCR9和CCL25促进了这些T细胞在聚组织中的招募和过敏反应.
- 这些发现对于理解牛奶过敏中的IgE合成和开发针对T细胞的免疫疗法至关重要.
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