针对KRASG12V/HLA-A*02:01的仿真抗原受体T细胞对固体瘤表现出强大的临床前活性
Huimin Shao1, Fei Xu1, Jiangyue Xu2
1Precision Medicine Centre, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu 241001, China.
Science advances
|February 20, 2026
概括
新的仿真抗原受体T细胞 (CAR T细胞) 疗法针对固体瘤中的KRASG12V突变. 这种方法显示出强大的抗瘤活性和良好的安全性,提供了一个有前途的新治疗策略.
科学领域:
- 在瘤学瘤学.
- 免疫治疗是一种免疫疗法.
- 分子生物学分子生物学
背景情况:
- 化学抗原受体T细胞 (CAR T细胞) 疗法在血液癌症中取得了成功,但由于目标特异性和安全性,在固体瘤中面临挑战.
- KRASG12V是固体瘤中普遍存在的,无法治疗的突变,提供了潜在的瘤专用标.
研究的目的:
- 开发和评估针对KRASG12V新抗原的CAR T细胞,在HLA-A*02:01等位基因的背景下,用于固体瘤治疗.
主要方法:
- 菌体抗体显示被用来识别高亲和度单链变量碎片对抗KRAS/HLA-A*02:01.01.
- 工程B9 CAR T细胞被测试了它们对溶解瘤细胞和患者衍生癌症器官的能力.
- 在活体中,有效性和安全性在胰腺管道腺癌 (PDAC) 的小鼠模型中进行了评估.
主要成果:
- B9 CAR T 细胞表现出KRASG12V/HLA-A*02:01表达瘤细胞和器官的特定溶解.
- 在各种PDAC小鼠模型中观察到瘤生长的显著控制,包括皮下,转移和腹模型.
- 在小鼠的安全性评估中没有观察到可检测的体内毒性.
结论:
- 针对KRASG12V/HLA-A*02:01的新抗原向CAR T细胞疗法显示出强大的抗瘤活性和有利的安全性.
- 这种方法在KRASG12V突变固体瘤患者中具有显著的临床转化潜力.
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