基于驼纳米体的B7-H3 CAR-T细胞显示出对大型固体瘤的高疗效
Dan Li1, Ruixue Wang1, Tianyuzhou Liang1
1Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, 20892, USA.
Nature communications
|September 22, 2023
概括
针对B7-H3的IgC表位体与基于纳米体的化学抗原受体T (CAR-T) 细胞,在小鼠中显示出强大的抗瘤活性. 这种方法增强了用于固体瘤免疫治疗的CAR-T细胞功能.
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:
- 化学抗原受体T (CAR-T) 细胞治疗是一种有前途的癌症治疗方法.
- B7-H3是固体瘤的新兴目标,具有明显的IgC和IgV表位图案.
- 通过合理的表皮质向优化CAR-T细胞激活对于治疗疗效至关重要.
研究的目的:
- 开发基于纳米体的新型CAR-T细胞,针对B7-H3蛋白.
- 评估针对特定B7-H3表位体 (IgC与IgV) 的CAR-T细胞的抗瘤疗效.
- 确定潜在的CAR-T细胞活性和持久性的分子机制.
主要方法:
- 对抗B7-H3.3的龙驼纳米体的生成
- 使用向IgC或IgV域的纳米体构建和测试CAR-T细胞.
- 在小鼠模型中进行体内疗效研究,小鼠模型具有大型固体瘤.
- 单细胞转录组RNA测序和功能T细胞蛋白质组学.
主要成果:
- 针对B7-H3 IgC表位体的CAR-T细胞对雌性小鼠的大型瘤表现出强大的抗瘤活性.
- 针对IgV域的CAR-T细胞的疗效较低.
- 向IgC表位体的CAR-T细胞表现出增强的T细胞信号传导和显著的瘤透.
- 确定与多功能CAR-T细胞持久性相关的关键上调基因.
结论:
- 由CAR-T细胞准的特定表位显著影响抗瘤活性.
- 针对B7-H3 IgC表位体的基于纳米体的CAR-T细胞代表了固体瘤免疫治疗的可行策略.
- 了解表位特异性CAR-T细胞反应可以指导开发更有效的癌症疗法.
相关概念视频
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