在IL-10中性别偏差由PI3K/mTOR信号调节的I型调节性T细胞产生的PI3K/mTOR信号
Aymeline Debonlier1, Saniya Kari1, Florence Bucciarelli1
1Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291-CNRS UMR5051, Université de Toulouse, France.
Neurology(R) neuroimmunology & neuroinflammation
|December 23, 2025
概括
生物学性别影响I型调节性T细胞 (Tr1) 分化和IL-10的产生,这可能解释了为什么女性更容易患上多发性硬化症 (MS). 针对PI3K途径可能为女性多发性硬化患者提供新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 神经免疫学 神经免疫学
- 疾病中的性别差异.
背景情况:
- 多发性硬化症 (MS) 不成比例地影响女性 (女性与男性的比例为3:1),但潜在的基于性别的分子机制在很大程度上是未知的.
- 多发性硬化症涉及免疫功能障碍,特别是效应细胞和调节性T细胞之间的不平衡.
- I型调节性T细胞 (Tr1),对免疫平衡至关重要,在患有多发性硬化症 (pwMS) 的人群中表现出减少的IL-10产生.
研究的目的:
- 研究生物性别对健康个体和pwMS的Tr1细胞分化和功能的影响.
- 探索PI3K/mTOR途径在性别特异性Tr1细胞反应中的作用.
主要方法:
- 通过CD46或IL-27共刺激,隔离CD4+T细胞并诱导Tr1分化.
- 量化Tr1细胞频率及其IL-10和IFN-γ的产生.
- 评估PI3K/mTOR通路活性与性别和Tr1细胞功能的关系.
主要成果:
- 与男性相比,健康的女性从Tr1细胞中产生较低的IL-10,特别是通过CD46辅助刺激进行区分时.
- 这种IL-10的性别差异与差异PI3K信号反循环有关.
- 在pwMS中,CD46诱导的Tr1分化在IL-10产生中没有性别差异,这表明MS相关的失调.
- PI3Kδ抑制对MS患者的IL-10产生产生了差异性影响,通过IL-27降低了男性的IL-10,但通过CD46增加了男性和女性的IL-10.
结论:
- 生物性别显著影响Tr1细胞通过PI3K通路产生IL-10.
- 这些发现表明,一种潜在的机制有助于MS在女性中更高的患病率.
- 向PI3Kδ可能代表了一种新的治疗方法,用于增强女性多发性硬化症患者的IL-10产生.
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