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使用脂质纳米颗粒在猪体中循环蛋白的siRNA调节

Massimo F Cau^1,2, Francesca Ferraresso^1,3,4, Monica Seadler^4,5

¹Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.

Molecular therapy. Methods & clinical development

|May 23, 2024

概括

优化脂质纳米颗粒有效降低了猪的等离子素水平,这是一个大型动物模型. 这一进步使得血液和肝脏蛋白质的基因操纵可以在没有CARPA的情况下进行,为新的研究铺平了道路.

科学领域:

生物技术是生物技术.
动物模型动物模型
分子生物学分子生物学

背景情况:

基因操纵对于研究中的动物模型至关重要.
像猪这样的大型动物模型对于研究人类生理学至关重要,但对遗传修饰具有挑战性.
现有的基因淘汰方法,如siRNA-LNP,面临诸如猪中的CARPA之类的挑战.

研究的目的:

开发一种使用siRNA-LNP在猪身上进行基因操纵的方法.
调查siRNA-LNP在降低猪体等离子素水平方面的有效性.
评估siRNA-LNP在猪群中的安全性和潜在副作用.

主要方法:

对猪进行了针对等离子体的优化siRNA-LNP (siPLG) 的管理.
测量了血等离子素蛋白和肝脏等离子素mRNA水平.
评估了全身凝血,并对CARPA和肝毒性进行监测.

主要成果:

siPLG治疗减少了血等离子素和肝脏等离子素mRNA,降低到基线<5%.
降低的等离子素水平调节了系统性血液凝结.
没有观察到CARPA;轻度,过渡性肝毒性在7天内消失.

结论:

优化的siRNA-LNP对降低猪体中的等离子素有效.
这种方法可以在大型动物模型中对血液和肝脏蛋白进行基因工程.
这些发现支持siRNA-LNP在未来更广泛地用于针对各种组织中的蛋白质.

关键词:

流血出血流血出血凝血是凝固的过程.纤维溶解是一种纤维溶解.基因治疗的基因疗法静脉内注射的静脉内注射肝脏肝脏肝脏肝脏肝脏肝脏纳米医药是一种纳米医药.核酸是核酸中的一种.猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪类动物猪类动物

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