产生非转基因的,类似CAR的NK细胞
Loïs Coënon1, Emilie Rigal2, Hortense Courot2
1IRMB, INSERM U1183, University of Montpellier, CHU Montpellier, Montpellier, France.
Journal for immunotherapy of cancer
|July 19, 2024
概括
这项研究引入了"Pin"技术,这是一种增强自然杀手 (NK) 细胞治疗的新方法. 针技术用抗体武装NK细胞,使得针对性癌细胞能够在没有基因修饰的情况下被向性地破坏,从而改善抗癌疗法.
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:
- 自然杀手 (NK) 细胞疗法对癌症治疗有希望,但缺乏向特异性,限制了临床益处.
- 化学抗原受体 (CAR) -NK细胞提供了更好的特异性,但涉及复杂的制造.
- 需要一种新的方法来针对性NK细胞疗法,而不需要基因修饰.
研究的目的:
- 开发一种使用抗体依赖的细胞介导细胞毒性 (ADCC) 而无遗传修饰的向NK细胞治疗平台.
- 在NK细胞上对CD16a增强 afinity 的修饰单克隆抗体 (Pin-mAbs) 的设计.
- 评估抗体武装NK细胞在向癌细胞中的有效性.
主要方法:
- 活体扩展的NK (eNK) 细胞是从带血中生成的.
- 单克隆抗体是用Pin突变设计的,以增加CD16a亲和力.
- eNK细胞装备了抗CD20或抗CD19Pin-mAbs,并进行了体外和体内试验.
主要成果:
- CD16a/Pin-mAb相互作用是稳定的,为武装的eNK细胞赋予了长期的特异性.
- 带有pin-mAb武装的eNK细胞诱导ADCC,特别针对表达抗原的细胞.
- 同时使用多个Pin-mAbs增强了对异质癌症群体 in vivo 的疗效.
结论:
- 该Pin技术提供了一个现成的NK细胞治疗平台.
- 它在没有遗传修饰的情况下产生CAR类NK细胞,使向瘤抗原消除成为可能.
- 这种平台可方便针对多个瘤抗原,以提高治疗效果.
更多相关视频
08:29Engineering Chimeric Antigen Receptor-Natural Killer Cells Targeting Fungal Infections Using the Non-viral Sleeping Beauty Transposon System
Published on: October 4, 2024
777
11:02Natural Killer NK and CAR-NK Cell Expansion Method using Membrane Bound-IL-21-Modified B Cell Line
Published on: February 8, 2022
5.6K
相关概念视频
01:24Methods of Nuclear Reprogramming
Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for injury repair.
01:16In-vitro Mutagenesis
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.