肠道免疫细胞的抗原特异激活驱动自身免疫神经炎症
Lena K Siewert1,2,3, Kristina Berve1,2, Elisabeth Pössnecker1,2
1Departments of Neurology, Biomedicine and Clinical Research, University Hospital and University of Basel, Basel, Switzerland.
经过基因工程,表达大脑抗原的肠道细菌可以恶化自身免疫神经炎症. 这项研究表明,抗原特异性微生物调制如何影响自身免疫力,为多发性硬化症 (MS) 基于微生物组的治疗提供了洞察力.
科学领域:
- 神经免疫学 神经免疫学
- 微生物组研究 微生物组研究
- 自免疫性疾病的发病因子 发病因子
背景情况:
- 在多发性硬化症 (MS) 中观察到肠道微生物群的改变.
- 肠道微生物群影响抗原特异性自身免疫反应的具体机制尚不清楚.
- 基于微生物组的疗法代表了治疗自身免疫性疾病的前沿.
研究的目的:
- 调查是否以及如何肠道细菌工程表达特定的大脑抗原可以影响自身免疫神经炎症.
- 在自免疫神经炎症的小鼠模型中剖析抗原特异性微生物调制的致病潜力.
- 探索抗原特异性T和B细胞激活对工程化肠道细菌的反应中的作用.
主要方法:
- 基因工程肠道细菌表达特定的抗原 (髓或卵蛋白-).
- 用工程细菌殖民自身免疫神经炎症的小鼠模型.
- 分析由此产生的免疫反应,包括抗原特异性T和B细胞激活.
- 评估对神经炎症疾病进展的影响.
主要成果:
- 与表达髓抗原的细菌的殖民化加剧了脑原性免疫反应.
- 这种恶化涉及肠道中抗原特异性T细胞和B细胞的激活.
- 在被菌素表达细菌殖民的小鼠中,疾病的进展加速了,但不是表达卵蛋白的细菌.
- 证明了自身免疫的抗原特异性微生物调制.
结论:
- 肠道微生物群可以以抗原特定的方式影响自身免疫反应.
- 工程化肠道细菌表达相关的自身抗原可以促进自身免疫神经炎症.
- 这些发现为开发针对性微生物群的治疗策略提供了关键的见解,用于MS和其他自身免疫性疾病.
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