设计双特异性CAR-NK细胞以恢复固体瘤中抗体依赖的细胞细胞毒性
Jee Young Chung1, Jung Eun Kim1, Daseuri Cha2
1CHA R&D Institute (CHARI), Seongnam 13488, Republic of Korea.
Cells
|February 26, 2026
概括
转化生长因子-β (TGF-β) 抑制了卵巢癌中的自然杀手 (NK) 细胞免疫疗法. 一种新的双特异性化学抗原受体 (CAR) -NK细胞疗法克服了这种抑制,恢复了抗瘤活性.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 细胞疗法细胞疗法
背景情况:
- 自然杀手 (NK) 细胞免疫疗法的有效性受到卵巢瘤微环境 (TME) 的限制.
- 在TME中转化生长因子-β (TGF-β) 抑制NK细胞功能,特别是CD16介导的抗体依赖细胞细胞毒性 (ADCC).
研究的目的:
- 为了阐明TGF-β诱导的NK细胞抑制在卵巢癌中的分子机制.
- 为了评估双特异性化学抗原受体 (CAR) 工程NK细胞战略以克服TGF-β介导的抑制.
主要方法:
- 主要的外周血液NK (PBNK) 细胞被TGF-β治疗,以评估表型和功能变化.
- NK-92细胞被设计成针对叶酸受体α (FRα) 和CD16的双特异性CAR.
- 在实验室和卵巢癌衍生的球体中评估了CAR-NK细胞的疗效,包括与Trastuzumab的协同作用.
主要成果:
- 在NK细胞中,TGF-β诱导了持续的SMAD2酸化,减少了激活受体 (CD16,NKG2D) 和增加了疲劳标记 (PD-1).
- 经TGF-β治疗的NK细胞表现出对卵巢癌球体的透和细胞毒性受损.
- 双特异性CAR-NK细胞成功透到瘤体中,并且在Trastuzumab的帮助下调解了强大的ADCC诱导的瘤细胞溶解,绕过了TGF-β抑制.
结论:
- TGF-β/SMAD2信号通路是卵巢TME中NK细胞功能障碍的一个关键机制.
- 双特异性CAR-NK细胞平台代表了一种有前途的治疗方法,通过克服TME诱导的抑制来恢复卵巢癌中NK细胞的抗瘤活性.
关键词:
ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC is also known as ADCC ADCC ADCC is also known as ADCC卡尔-NK 是一个卡尔-NK.CD16 CD16 CD16 CD16 CD16 CD16 CD16 CD16 CD16 CD16 CD16 CD16 CD16 CD16 CD16 CD16在TGF-β的基础上.自然杀手细胞 (NK细胞)卵巢癌是发生在卵巢的癌症.相关概念视频
Tumor Immunotherapy
2.1K
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.
2.1K
Targeted Cancer Therapies
9.0K
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...
9.0K


