针对CD33的膜近端C2集域,以改善CAR T细胞治疗
Salvatore Fiorenza1,2, Sheryl Y T Lim1, George S Laszlo1
1Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA.
Molecular therapy. Oncology
|September 3, 2024
概括
新的仿真抗原受体 (CAR) 针对CD33的T细胞疗法通过更接近白血病细胞膜的结合,显示出更好的疗效. 这些CD33PANCAR T细胞为治疗急性髓性白血病 (AML) 提供了一个有前途的方法.
科学领域:
- 免疫治疗是一种免疫疗法.
- 在瘤学瘤学.
- 细胞疗法细胞疗法
背景情况:
- 目前的CD33向免疫疗法通常向膜-遥远V集域.
- 由于T细胞与白血病细胞膜的距离很近,这会影响T细胞的化学抗原受体 (CAR) 疗效.
- 急性髓性白血病 (AML) 仍然是一个重大挑战,需要新的治疗策略.
研究的目的:
- 开发和优化新型CAR T细胞结构,针对CD33.3的膜近端C2集合域.
- 为了评估CD33PANCAR T细胞与CD33V-setCAR T细胞相比的疗效.
- 研究CD33PANCAR T细胞在AML治疗中临床应用的潜力.
主要方法:
- 使用单链变量片段对抗CD33 C2集域 (CD33PAN抗体) 的第二代CAR构造的生成.
- 在人体AML细胞系和免疫缺陷小鼠模型中对CD33PANCAR T细胞疗效的体外和体内评估.
- 对白血病干细胞的CD33PAN部分频率和CAR T细胞对初级AML细胞的疗效的分析.
主要成果:
- CD33PANCAR T细胞在AML异种移植模型中表现出高效的瘤清除和改善的生存率.
- 这些CAR-T细胞在体外和体内对各种AML细胞系的疗效优于CD33V-setCAR-T细胞.
- CD33PANCAR T细胞对人类初级AML细胞和白血病干细胞表现出更大的疗效.
结论:
- 将CD33与细胞膜紧密结合,可以提高CAR T细胞的疗效.
- CD33PANCAR T细胞代表了AML的有前途的治疗策略,包括CD33表达有限的病例.
- 对CD33PANCAR T细胞进行进一步的研究是潜在的临床转换的必要.
相关概念视频
Targeted Cancer Therapies
7.5K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.5K
Tumor Immunotherapy
493
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.
493


