一种与原结合的SIRPαFc融合蛋白,用于向癌症免疫治疗
Jiayang Liu1, Tongyang Xu1, Danjie Pan2
1Minhang Hospital & Department of Biological Medicines at School of Pharmacy, Fudan University, Shanghai 201100, China.
International immunopharmacology
|September 18, 2023
概括
一种新的融合蛋白向瘤原蛋白,增强抗瘤免疫力. 这种·威尔布兰德因子A3 (vWF A3) -SIRPαFc融合蛋白与未经修改的SIRPαFc相比,改善了免疫细胞活性和瘤抑制.
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:
- 由于异常的血管系统,瘤原蛋白是可访问的,呈现出瘤特异性标.
- 之前的配对对象看起来很有前途,但存在不确定的合比的问题.
- ·维勒布兰德因子A3 (vWF A3) 域特别结合原蛋白.
研究的目的:
- 创建和评估一个vWF A3-SIRPαFc融合蛋白,以增强瘤向和抗瘤免疫力.
- 评估融合蛋白的原结合亲和力,向相互作用和促细胞形成的能力.
- 为了研究融合蛋白的体内抗瘤功效和免疫激活作用.
主要方法:
- 通过真核体表达产生了vWF A3-SIRPαFc融合蛋白.
- 评估了分子和细胞特性,包括原亲和力和细胞化.
- 进行活体成像用于瘤积累和保留研究.
- 在MC38全移植模型中评估了抗瘤作用.
主要成果:
- vWF A3-SIRPαFc融合蛋白保留了对原的结合亲和力和促进细胞形成的功能.
- 活体成像显示了瘤积累的增强和融合蛋白质的保留.
- 在体内研究显示优异的瘤抑制,增加M1巨细胞和T细胞.
结论:
- vWF A3-SIRPαFc融合蛋白有效地准瘤原蛋白,提高了抗瘤免疫治疗的疗效.
- 融合蛋白增强免疫激活,特别是增加MHC II+ M1巨细胞和CD4+ T细胞.
- 用vWF A3准瘤原体是癌症免疫治疗的一个有希望的策略.
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