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Differential Tfh cell phenotypes distinguish IgE-mediated milk allergy from eosinophilic esophagitis in children.
Journal of Allergy and Clinical Immunology ( IF 11.4 ) Pub Date : 2024-10-08 , DOI: 10.1016/j.jaci.2024.09.024
Daniel Lozano-Ojalvo,Xin Chen,Wajiha Kazmi,David Menchén-Martínez,Leticia Pérez-Rodríguez,Weslley Fernandes-Braga,Scott Tyler,Keith Benkov,Nanci Pittman,Joanne Lai,Hugh A Sampson,Maria Curotto de Lafaille,David Dunkin,M Cecilia Berin

BACKGROUND IgE-mediated food allergy and eosinophilic esophagitis (EoE) are diseases commonly triggered by milk. Milk-responsive CD4+ T cells producing type 2 cytokines are present in both diseases, yet the clinical manifestation of disease in milk allergy (MA) and EoE are distinct. OBJECTIVE To identify CD4+ T cell differences between EoE and MA that may be responsible for distinct disease manifestations. METHODS The total and milk-specific CD4+ T cell phenotype of children with milk allergy (MA), EoE (active or in remission) and controls was measured using spectral flow cytometry of peripheral blood (all groups) or esophageal biopsies (EoE and control). RESULTS Circulating milk-responsive T cells could be identified in active (A)-EoE and MA. An increased frequency of Th2A cells was also noted in MA and EoE. In circulating T cells, type 2 cytokine production was elevated in MA, but not EoE. Within the milk-responsive Tfh subset, a dichotomy of phenotype was noted: Tfh13 cells predominated in MA, while IL-10-producing Tfh cells predominated in EoE. In the esophagus, CD4+ T cells were constitutively activated and expressed not only type 2 cytokines, but also IL-10 and IL-21 in A-EoE. There was production of IgG4 from CD38+ plasma cells in close proximity to CD4+ T cells. In vitro activation studies demonstrated that IL-10 and IL-21 elicited strong IgG4 responses in B lymphocytes, while IL-4 and IL-13 promoted IgE production. CONCLUSION Our studies demonstrate a dichotomy of Tfh responses that may be the basis for the different clinical manifestations to milk in EoE and MA.

中文翻译:


差异 Tfh 细胞表型可区分 IgE 介导的奶类过敏与儿童嗜酸性粒细胞性食管炎。



背景 IgE 介导的食物过敏和嗜酸性粒细胞性食管炎 (EoE) 是通常由牛奶引发的疾病。产生 2 型细胞因子的牛奶反应性 CD4+ T 细胞存在于这两种疾病中,但牛奶过敏 (MA) 和 EoO 的疾病临床表现不同。目的 确定 EoE 和 MA 之间的 CD4 + T 细胞差异,这些差异可能是导致不同疾病表现的原因。方法 使用外周血 (所有组) 或食管活检 (EoE 和对照) 的光谱流式细胞术测量牛奶过敏 (MA) 、 EoO (活动期或缓解期) 和对照儿童的总和乳汁特异性 CD4+ T 细胞表型。结果 循环牛奶反应性 T 细胞可在活性 (A)-EoE 和 MA 中鉴定。在 MA 和 EoE 中也观察到 Th2A 细胞的频率增加。在循环 T 细胞中,MA 中 2 型细胞因子的产生升高,但 EoE 没有。在牛奶反应性 Tfh 亚群中,注意到表型的二分法: Tfh13 细胞在 MA 中占主导地位,而产生 IL-10 的 Tfh 细胞在 EoE 中占主导地位。在食管中,CD4+ T 细胞被组成性激活,不仅表达 2 型细胞因子,还在 A-EoE 中表达 IL-10 和 IL-21。CD4+ T 细胞附近有 CD38 + 浆细胞产生 IgG4。体外活化研究表明,IL-10 和 IL-21 在 B 淋巴细胞中引发强烈的 IgG4 反应,而 IL-4 和 IL-13 促进 IgE 的产生。结论 我们的研究表明 Tfh 反应的二分法可能是 EoE 和 MA 中对牛奶的不同临床表现的基础。
更新日期:2024-10-08
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