在接受CD19 CAR T细胞治疗的白血病患者中,长期反应的免疫代谢决定因素
bioRxiv : the preprint server for biology
|November 24, 2025
概括
在B细胞急性淋巴细胞白血病 (B-ALL) 中的长期反应CAR T细胞治疗取决于T细胞代谢. 在制造过程中提高T细胞代谢可以改善抗瘤活性和长期缓解.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
背景情况:
- 复发性/耐药性B细胞急性淋巴细胞白血病 (B-ALL) 是一个重大的治疗挑战.
- 化学抗原受体 (CAR) T细胞疗法提供了一个有希望的途径,但由于CAR T细胞功能障碍的复发仍然存在.
- 了解CAR T细胞的免疫代谢对于提高治疗疗效至关重要.
研究的目的:
- 为了研究CD19-CAR T细胞的免疫代谢概况在复发/耐药B-ALL.患者.
- 为了确定长期响应者 (LTR) 和短期响应者之间的代谢差异.
- 探索增强CAR T细胞功能和延长缓解的策略.
主要方法:
- 利用综合方法分析注射前和注射后CD19-CAR T细胞的免疫代谢.
- 在LTR和短期响应者之间比较代谢活性,线粒体特征和信号通路 (例如mTOR).
- 研究了在CAR T细胞制造过程中暂时的mTOR抑制的影响.
主要成果:
- 在输注前,来自LTR的CAR T细胞表现出增强的氧化酸化,脂肪酸氧化和酸路径活性.
- LTR CAR T 细胞表现出更高的线粒体质量和更紧的晶状体,具有较低的输注前mTOR表达.
- 在LTR骨髓中的输液后CAR T细胞表现出由微环境和高mTOR-pS6表达支持的代谢可塑性.
- 在制造过程中暂时抑制mTOR导致了代谢重编程和改善抗瘤活性.
结论:
- 免疫代谢特征是B-ALL中对CD19-CAR T细胞治疗的长期反应的关键决定因素.
- 骨髓微环境在支持CAR T细胞功能和可塑性方面发挥作用.
- 针对T细胞代谢,特别是通过制造过程中暂时的mTOR抑制,是提高CAR T细胞疗效和实现持久缓解的可行策略.
相关概念视频
Tumor Immunotherapy
1.7K
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
1.7K
Combination Therapies and Personalized Medicine
5.9K
Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
5.9K
Cell-mediated Immune Responses
83.4K
Overview
83.4K


![Dynamic Imaging of Chimeric Antigen Receptor T Cells with [18F]Tetrafluoroborate Positron Emission Tomography/Computed Tomography](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F62334.jpg&w=3840&q=50)