一种基于B子单元的Shiga毒素Lectibody增强T细胞对Gb3-阳性癌细胞的细胞毒性
Jana Tomisch1,2, Vincent Busse1,2, Francesca Rosato1,2
1Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany.
Cells
|July 29, 2023
概括
这项研究引入了一种新型的lectibody,针对癌细胞中的globotriaosylceramide (Gb3). 这种lectibody有效地重定向T细胞以消除高达80%的Gb3阳性癌细胞,提供一种新的免疫疗法策略.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
背景情况:
- 异常的糖基化是瘤进展和侵袭性的关键.
- 与瘤相关的碳水化合物抗原 (TACA) 是有希望的免疫治疗点.
- 甘氨酸结构往往具有较差的免疫性,需要改进向方法.
研究的目的:
- 开发一种新型的lectibody,用于选择性向全球三基胺 (Gb3) 阳性癌细胞.
- 评估lectibody在重定向T细胞介导的细胞毒性对癌细胞中的有效性.
主要方法:
- 在大肠杆菌中生产和净化一个二度的Shiga毒素B子单元 (StxB) -scFv UCHT1 lectibody.
- 使用流细胞计,对Gb3在癌细胞和CD3在T细胞上的Lectibody特异性的评估.
- 在体外试验中对T细胞介导的细胞毒性对Gb3过度表达的癌细胞的评估.
主要成果:
- 在StxB-scFv UCHT1的教学体证明了Gb3.3的特异性.
- 该lectibody成功地重定向T细胞细胞毒性,导致高达80%的Gb3-过度表达的癌细胞被杀死.
- 在出血和固体瘤模型中观察到有效性.
结论:
- 开发出来的乳腺体显示出向Gb3阳性癌症的潜力.
- 乳腺体和乳腺素为增强免疫治疗策略提供了一个有前途的方法.
- 这项技术可以提高现有癌症治疗的疗效.
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