从效应性T细胞生成功能稳定和抗原特异的Treg细胞,用于炎症性疾病的细胞治疗
Norihisa Mikami1, Ryoji Kawakami2, Atsushi Sugimoto1
1Department of Experimental Immunology, Immunology Frontier Research Center, The University of Osaka, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
Science translational medicine
|October 22, 2025
概括
研究人员使用CDK8/19抑制和CD28剥夺将传统的T (Tconv) 细胞转化为稳定的调节性T (Treg) 细胞. 这些诱导的Treg细胞显示出通过抗原特异性免疫抑制治疗免疫疾病的前景.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 免疫治疗是一种免疫疗法.
背景情况:
- 抗原特异性免疫抑制旨在将传统的T (Tconv) 细胞转化为稳定的调节性T (Treg) 细胞.
- 自然存在的Treg (nTreg) 细胞为稳定抑制提供了基准.
研究的目的:
- 开发一种用于将抗原特异性Tconv细胞转化为稳定诱导的Treg (iTreg) 细胞的体外方法,用于治疗应用.
- 研究分子机制,包括表观遗传变化,是Tconv细胞转化为iTreg细胞的基础.
主要方法:
- 用抗原和IL-2 (IL-2) 刺激Tconv细胞,加上CDK8/19抑制以诱导高Foxp3表达.
- 在Treg细胞诱导过程中剥夺CD28共刺激,以促进Treg特异性表观遗传修饰.
- 用IL-2进行代的诱导和休息阶段,以提高各种Tconv细胞子集的转换效率 (原始,效应/记忆,TH1,TH2,TH17).
主要成果:
- 多种CD4+ Tconv细胞的高效转化为Foxp3+ iTreg细胞.
- iTreg细胞表现出与nTreg细胞相似的转录和表观遗传特征.
- 诱导的Treg细胞在体内表现出功能和表型稳定性.
- 在小鼠模型中,iTreg细胞有效抑制了炎症性肠病和移植与宿主疾病.
结论:
- CDK8/19抑制和CD28剥夺使Tconv细胞能够稳定地产生稳定的iTreg细胞.
- 这些iTreg细胞具有强大的免疫抑制能力和稳定性,与nTreg细胞相美.
- 使用效应器/记忆Tconv衍生的iTreg细胞的采用细胞疗法为免疫疾病的抗原和疾病特异性治疗提供了一个潜在的策略.
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