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LA-NF-κB-ILC2轴通过促进ILC2激活在小鼠中加剧肠道牛奶蛋白过敏

Yun Zhang¹, Yaling Wu¹, Yingying Wang¹

¹Department of Pediatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, He Fei 230001, China; Graduate School, Bengbu Medical University, Bengbu 233000, China.

|March 4, 2026

概括

酸 (LA) 通过NF-κB通路激活2组先天性淋巴细胞 (ILC2s),加剧牛奶蛋白过敏 (CMPA). 抑制LA或这种途径可能为儿童CMPA提供新的治疗方法.

科学领域:

免疫学免疫学免疫学
过敏研究研究过敏
分子生物学分子生物学

背景情况:

牛奶蛋白过敏 (CMPA) 是儿童早期流行的一种食物过敏,通常涉及2型免疫细胞,如2组先天性淋巴细胞 (ILC2).
利诺基酸 (LA) 是一种多不和脂肪酸,具有免疫调节特性,此前在过敏小鼠的肠道ILC2中观察到高水平.
对于LA在CMPA发病过程中的确切作用尚不清楚,因此需要进一步研究其对ILC2s的影响.

研究的目的:

在牛奶蛋白过敏 (CMPA) 的小鼠模型中研究酸 (LA) 对2组先天性淋巴细胞 (ILC2s) 激活的影响.
阐明LA影响ILC2激活并加剧CMPA中的过敏炎症的潜在分子机制.

主要方法:

从牛奶蛋白过敏和对照小鼠的肠道ILC2中定量酸 (LA) 水平.
流细胞计分析以评估LA对ILC2比例和IL-5/IL-13细胞因子释放的影响.
利用PPARα激动剂和NF-κB信号通路抑制剂,以及转录基因测序,探索免疫调节和分子通路.

主要成果:

与对照组相比,过敏小鼠的LA水平显著提高,ILC2比例增加,IL-5/IL-13释放量增加.
用PPARα激动剂治疗降低了ILC2的比例,减轻了炎症和过敏反应.
转录组分析表明,LA激活NF-κB信号通路;它的抑制降低了CMPA小鼠中的ILC2比例和细胞因子水平.

结论:

氨酸 (LA) 似乎通过NF-κB信号通路调节ILC2s来促进IL-5/IL-13的释放,并加剧CMPA中的炎症.
向LA积累或抑制NF-κB通路为管理幼儿CMPA提供了潜在的治疗策略.

关键词:

过敏反应过敏反应牛奶蛋白质过敏牛奶蛋白质过敏在 ILC2s 里.亚麻酸亚麻酸亚麻酸 NF-κB信号通道的信号通道

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