人类 ангиотензин转化酶2-特定的反感性寡核酸减少了感染SARS-CoV-2变体的感染
Tong Lu1, Chengcheng Zhang1, Zhengqi Li2
1Department of Otolaryngology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China; Otorhinolaryngology Institute of Sun Yat-sen University, Guangzhou, Guangdong, China; Guangzhou Key Laboratory of Otorhinolaryngology, Guangzhou, Guangdong, China.
The Journal of allergy and clinical immunology
|June 23, 2024
概括
针对 ангиотензин转化酶2 (ACE2) 的反感性寡核酸 (ASO) 通过减少病毒载量和改善生存率有效地阻断SARS-CoV-2感染. 这种方法提供了一个有前途的新策略来对抗像SARS-CoV-2这样的突变病毒.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 治疗方法 治疗方法
背景情况:
- SARS-CoV-2 尖端蛋白突变降低了疫苗的疗效,需要针对宿主因素的疗法.
- ангиотензин转化酶2 (ACE2) 是SARS-CoV-2和其他冠状病毒的关键宿主受体.
- 降低呼吸道ACE2表达的调节可能会防止病毒进入,而反感性寡核酸 (ASO) 为此提供了一种潜在的方法.
研究的目的:
- 设计和评估针对ACE2的ASO,以阻止人类呼吸道中的SARS-CoV-2感染.
- 评估ASOs在降低ACE2表达和抑制病毒复制方面的有效性.
- 在临床前模型中确定ASO的安全性和有效性.
主要方法:
- 针对ACE2的ASO的生物信息设计和细胞系选.
- 在人类初级鼻上皮细胞和人性化的ACE2小鼠中评估ACE2降低和ASO安全性.
- 在ASO治疗细胞和小鼠中进行感染研究,以评估病毒载量和病理学.
主要成果:
- 在体外和人类鼻上皮细胞中,ASOs显著降低了mRNA和蛋白质水平的ACE2表达.
- 在人类鼻上皮细胞中,ASOs抑制了三种SARS-CoV-2变异的复制.
- 在体内,ASOs在小鼠中降低了人类ACE2的调节,减少了病毒载量,肺病理,并增加了生存率.
结论:
- 针对ACE2的ASO在阻止SARS-CoV-2感染方面表现出强大的有效性.
- 这项研究提出了一种新的治疗策略,用于对抗SARS-CoV-2和其他针对ACE2的病毒.
- ASO疗法对高风险人群和对新出现的病毒威胁有潜力.
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