一种非炎症mRNA疫苗用于实验性自身免疫脑炎的治疗
Christina Krienke1,2, Laura Kolb1, Elif Diken1
1TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University gGmbH, Freiligrathstr. 12, Mainz 55131, Germany.
Science (New York, N.Y.)
|January 8, 2021
概括
纳米粒子配方的信使RNA (mRNA) 疗法可以控制自身反应性T细胞用于自身免疫性疾病的治疗. 这种方法通过促进调节性T细胞发育而抑制小鼠模型中的疾病,而无需广泛的免疫抑制.
科学领域:
- 免疫学
- 纳米医学
- 自身免疫性疾病
背景情况:
- 在没有全身免疫抑制的情况下控制自身反应性T细胞对于治疗自身免疫性疾病至关重要.
- 在非炎症背景下安全有效地传递与疾病相关的抗原是一个重大挑战.
研究的目的:
- 调查纳米粒子配方的1甲基伪尿素修饰信使RNA (m1Ψ mRNA) 治疗自身免疫性疾病的潜力.
- 在临床前模型中评估m1ΨmRNA的免疫调节效果和治疗效果.
主要方法:
- 编码与疾病相关的自抗原的纳米粒子配制的m1Ψ mRNA的系统输送.
- 在脏CD11c+抗原呈现细胞上对抗原呈现的评估.
- 在多发性硬化症小鼠模型中对疾病抑制的评估.
- 对效应T细胞减少和调控T细胞 (Treg细胞) 种群发展的分析.
主要成果:
- 在没有共刺激信号的抗原呈现细胞上,m1ΨmRNA促进了抗原呈现.
- 在多发性硬化症小鼠模型中使用m1ΨmRNA抑制疾病.
- 治疗效果与T效应细胞的减少和Treg细胞的增加有关.
- 诱导的Treg细胞表现出强烈的旁观者免疫抑制,有利于同源和非同源的自身抗原诱导疾病.
结论:
- 纳米粒子配方的m1ΨmRNA为自身免疫性疾病的向免疫治疗提供了一个有前途的策略.
- 这种方法可以控制免疫调节,从而抑制疾病并诱导强大的调节T细胞.
- 这些发现支持开发基于m1ΨmRNA的治疗方法,用于治疗需要特定免疫耐受性的疾病.
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