收养性T细胞疗法针对一种可诱导和广泛共享的异常mRNA转化产物
Julien Champagne1, Morten M Nielsen2, Xiaodong Feng1
1Division of Oncogenomics, Oncode institute, the Netherlands Cancer Institute, Amsterdam, the Netherlands.
Immunity
|January 4, 2025
概括
新的癌症新表位,由酸到氨酸替代物产生的,显示为采用T细胞治疗的希望. 这些目标是广泛表达的,可以被工程T细胞有效准,潜在地克服目前的治疗限制.
科学领域:
- 癌症免疫学 癌症免疫学
- 分子生物学分子生物学
- 免疫治疗是一种免疫疗法.
背景情况:
- 干扰素- (IFNγ) 和胺二二氧化酶1 (IDO1) 在癌症中升高调节,导致托耗尽.
- 在蛋白质合成过程中,氨酸的枯竭会诱导核糖体框架转移和氨酸到氨酸 (W>F) 编码子的重新分配,从而产生新位.
研究的目的:
- 调查W>F新表位细胞是否可以作为采用T细胞治疗的点.
- 识别和描述W>F新表位体及其相应的T细胞受体 (TCR).
主要方法:
- 免疫型分析以确定W>F新型.
- 描述T细胞受体 (TCR) 亲和力和特异性.
- 癌细胞对T细胞激活的体外评估.
- 在体内进行概念验证研究.
主要成果:
- 确定了数百种W>F新表位,主要由HLA-A*24:02.2呈现.
- 对于TMBIM6WF新位,确定了一种高亲和度的TCR (TCRTMBIM6W>F.1),在癌症细胞系中广泛表达.
- TCRTMBIM6W>F.1 T细胞被托贫乏的癌细胞特别激活.
- 在体内研究表明,TCRMART1 T细胞通过W>F新位生成通过TCRTMBIM6W>F.1 T细胞调节的癌细胞杀死增强.
结论:
- W>F新表位体代表癌症中共享的,高度表达的,免疫性标.
- 通过克服当前的局限性,这些新型细胞具有推进采用性T细胞疗法的潜力.
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