优化的ACE2-Fc融合蛋白具有对高度进化的SARS-CoV-2变体的皮科莫尔中和活性
Ferran Abancó1,2, Ferran Tarrés-Freixas1,2,3,4, Rosalba Lepore5
1IrsiCaixa, Badalona, Spain.
Protein science : a publication of the Protein Society
|January 28, 2026
概括
工程设计的ACE2-Fc融合蛋白对包括Omicron亚系在内的不断发展的SARS-CoV-2变体表现出强大的中和作用. 这些优化的蛋白质为脆弱人群提供了单克隆抗体的有希望的替代品.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 蛋白质工程是指蛋白质工程.
背景情况:
- 严重急性呼吸道综合征冠状病毒2 (SARS-CoV-2) 迅速发展,降低了当前单克隆抗体治疗的有效性.
- 由于免疫反应受损,免疫功能受损的个体特别容易受到严重的COVID-19的感染.
研究的目的:
- 为了设计优化的血管激素转化酶2 (ACE2) -Fc融合蛋白,增强对抗SARS-CoV-2变种的中和活性.
- 评估这些新型ACE2-Fc融合蛋白对广泛的SARS-CoV-2变体的疗效,包括Omicron亚系.
主要方法:
- 在S蛋白结合接口的基突变发生,以增加亲和力.
- 纳入灵活的链接器,以提高蛋白质的稳定性和S蛋白质的可访问性.
- 产生四重体ACE2-Fc分子以增强结合力.
主要成果:
- 优化的ACE2-Fc融合蛋白在皮科莫拉范围对所有测试的SARS-CoV-2变种,包括JN.1和KP.2.表现出强大的中和活性.
- 与单克隆抗体Sipavibart.相比,这些工程分子表现出类似的效能和优越的弹性.
- 对伪病毒和真实SARS-CoV-2菌株均证实了中和活性.
结论:
- 工程设计的ACE2-Fc融合蛋白代表了下一代COVID-19干预措施的有希望的战略.
- 这些分子为治疗由不断演变的SARS-CoV-2菌株引起的感染提供了强大的替代方案,特别是在免疫功能低下的患者中.
- 优化的ACE2-Fc平台提供了一种多功能方法来对抗病毒演变并保持治疗疗效.
关键词:
在ACE2中,ACE2是ACE2.根据COVID-19的情况,在Fc融合蛋白质中.S 蛋白质是一种蛋白质.在SARS-CoV-2中.冠状病毒冠状病毒病毒进化 演化 演化 演化 演化 演化 演化 演化在的突变发生过程中.中和活动中和活动.更多相关视频
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