通过以基为中心的CAR对细胞内瘤蛋白进行向
Mark Yarmarkovich1,2, Quinlen F Marshall3, John M Warrington3
1Perlmutter Cancer Center, New York University Grossman School of Medicine, New York, NY, USA. mark.yarmarkovich@nyulangone.org.
Nature
|November 8, 2023
概括
这项研究引入了以为中心的仿制抗原受体 (PC-CARs),通过识别PHOX2B瘤蛋白来向神经母细胞瘤. 在小鼠中,PC-CARs 显示出强大的杀死癌细胞和瘤回归,扩大了免疫疗法选择.
科学领域:
- 免疫学
- 癌症学
- 生物技术
背景情况:
- 大多数癌症是由细胞内蛋白驱动的,免疫疗法仅限于突变的 (新抗原).
- 神经母细胞瘤是一种儿童癌症,
- 目前基于新抗原的疗法对于具有低突变负担的癌症是不够的.
研究的目的:
- 开发针对细胞内瘤的新型免疫治疗策略.
- 研究在神经母细胞瘤中向非突变的PHOX2B衍生QYNPIRTTF的潜力.
- 设计能够识别多个人类白细胞抗原 (HLA) 类型的特定瘤相关体的基抗原受体 (PC-CAR).
主要方法:
- 来自瘤原蛋白的神经母细胞瘤丰富的鉴定.
- 针对PHOX2B衍生的QYNPIRTTF的PC-CAR的设计和开发.
- 使用反策略和计算建模来预测和验证不同HLA类型的交叉反应性.
主要成果:
- 神经母细胞瘤免疫是从必需的瘤生成蛋白中获得的.
- 在HLA-A*24:02上识别了PHOX2B衍生QYNPIRTTF,并使用PC-CAR进行向.
- 在HLA-A*23:01上,PHOX2BPC-CARs表现出对QYNPIRTTF的识别,扩大了HLA全型向.
- 在实验室中证明了神经母细胞的强大和特异性杀死,并在小鼠中完成了瘤回归.
结论:
- 通过PC-CAR治疗,可以有效地向以前无法接受免疫治疗的细胞内瘤蛋白.
- 这种策略扩大了潜在的免疫治疗点,超出了新抗原,用于具有低突变负担的癌症.
- 通过向额外的HLA全型,PHOX2BPC- CAR具有更广泛的临床应用潜力.
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