人类中和抗体针对SARS-CoV-2的受体结合部位
Rui Shi1,2, Chao Shan3, Xiaomin Duan1,2
1CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.
Nature
|May 27, 2020
概括
研究人员从一名COVID-19患者中分离出了两个人类单克隆抗体,CA1和CB6. 在实验室和 rhesus 子中,抗体 CB6 有效中和了 SARS-CoV-2,显示出临床发展的前景.
科学领域:
- 病毒学
- 免疫学
- 药物发现
背景情况:
- 由SARS-CoV-2引起的2019年冠状病毒病 (COVID-19) 的全球传播需要有效的治疗和预防策略.
- 了解病毒与宿主之间的相互作用对于开发针对性的SARS-CoV-2干预措施至关重要.
研究的目的:
- 隔离和描述具有强大的SARS-CoV-2中和活性的人类单克隆抗体.
- 在临床前模型中评估这些抗体的治疗潜力.
主要方法:
- 从康复的COVID-19患者中分离单克隆抗体.
- 在体外中和试验评估抗体对SARS-CoV-2的有效性.
- 对 rhesus 子进行体内研究以评估预防和治疗效果.
- 结构研究以阐明抗体中介中和的机制.
主要成果:
- 两种人类单克隆抗体,CA1和CB6被分离出来.
- 这两种抗体在体外表现出强大的SARS-CoV-2特异性中和.
- 在预防和治疗方面,CB6在 rhesus 子中显著抑制了 SARS-CoV-2 感染.
- 结构分析显示,CB6针对SARS-CoV-2受体结合域,通过固体阻碍和直接竞争干扰ACE2相互作用.
结论:
- 单克隆抗体CB6显示出作为COVID-19治疗和预防的治疗候选者的巨大潜力.
- 这些发现支持对CB6进行进一步的临床研究,以便将其转化为患者护理.
相关概念视频
01:26Antibody Actions
2.2K
Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...
2.2K
00:42Cross-reactivity
32.7K
Overview
32.7K
01:36Humoral Immune Responses
82.9K
Overview
82.9K
01:29Immune Response Against Viral Pathogens
1.5K
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
1.5K