通过个性化抗原不可知查方法识别的T细胞受体准了共享的新抗原KRAS Q61H
Volker Lennerz1,2,3, Christoph Doppler1, Martina Fatho1
1Internal Medicine III, University Medical Center (UMC) of the Johannes Gutenberg University Mainz, Mainz, Germany.
Frontiers in immunology
|April 1, 2025
概括
这项研究引入了一种新的方法,用于在固体癌症中确定瘤特异性T细胞受体 (TCR) 用于采用细胞疗法 (ACT). 这种抗原无定性方法可以为更多患者推进TCR工程T细胞疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 生物技术是生物技术.
背景情况:
- 使用T细胞受体 (TCRs) 的采用细胞疗法 (ACT) 对晚期固体癌症显示出有前途.
- 目前的TCR选择需要已知的向抗原,限制了治疗的可访问性.
- 开发抗原不可知性方法对于扩大ACT应用至关重要.
研究的目的:
- 开发和验证一种识别瘤特异性T细胞克隆类型的方法,在没有先前的抗原知识的情况下.
- 为患有侵袭性固体癌症的患者推进TCR工程T细胞制造.
- 探索KRAS突变非小细胞肺癌 (NSCLC) 的潜在治疗点.
主要方法:
- 比较瘤透淋巴细胞 (TIL) 和相邻组织居民淋巴细胞的TCRβ链谱.
- 使用瘤与非瘤频率比率和scRNA-Seq进行克隆型选择.
- 工程TCR-T细胞和查对自身瘤和癌细胞系的反应性.
主要成果:
- 在七名NSCLC患者中的六名中确定了瘤特异性克隆类型.
- 在三名患者中,预测的克隆类型对自身瘤的反应性已被证明.
- 工程TCR-T细胞识别了自身瘤和与HLA匹配的NSCLC细胞系.
- 发现了三种TCRs识别KRAS Q61H突变呈现HLA-A*01:01,在瘤复发和无细胞DNA中发现.
结论:
- 开发的方法使得针对ACT的瘤特异性TCRs的抗原不可知识别成为可能.
- 这种方法可以扩大患者接受TCR-T细胞治疗的资格.
- 针对KRAS Q61H的已识别的TCR为HLA-A*01:01阳性NSCLC患者提供了潜在的治疗策略.
关键词:
在KRAS Q61H中使用.T细胞受体 (TCR) 是一种T细胞受体.在TCR-T细胞中.癌症免疫疗法免疫疗法免疫瘤学 免疫瘤学新抗原是一种新抗原.致癌驱动基因 - - 致癌驱动基因针对瘤的特定抗原.更多相关视频
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