针对Omicron亚型的SARS-CoV-2中和抗体的结构划分和计算设计
Saya Moriyama1, Yuki Anraku2, Shunta Taminishi3
1Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases; Shinjuku-ku, Tokyo, 162-8640, Japan. sayamrym@niid.go.jp.
Nature communications
|July 14, 2023
概括
科学家们在SARS-CoV-2 Omicron亚变体上确定了关键抗体目标,从而设计了弹性抗体. 这项研究为开发有效的抗病毒治疗方法提供了洞察力.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 结构生物学 结构生物学
背景情况:
- SARS-CoV-2 Omicron 子变种表现出突变,逃避现有的抗体.
- 针对受体结合部位 (RBS) 的公共抗体克隆经常受到这些突变的影响.
研究的目的:
- 识别和选择适应新出现的Omicron亚型变异突变的RBS抗体.
- 了解抗体抵抗病毒逃逸的结构基础.
主要方法:
- 合理选择受体结合部位 (RBS) 抗体.
- 识别病毒漏洞的位置 (例如,Y489).
- 计算型抗体设计和中和试验.
主要成果:
- Y489被确定为受广泛中和抗体准的脆弱部位.
- 一些Y489结合抗体识别F486,可能解释F486V突变.
- 来自罕见克隆类型的抗体的一个子类广泛中和BA.4/BA.5.5.
- 一个计算设计的抗体 (NIV-10/FD03) 结合了任何486突变的XBB变体和中和的XBB.1.5.5.
结论:
- Y489部位是开发针对SARS-CoV-2 Omicron的广泛中和抗体的关键目标.
- 了解抗体-突变相互作用,有助于设计耐病毒演变的治疗药物.
- 该研究为设计下一代抗病毒疗法提供了结构性见解.
相关概念视频
Conjugated Proteins
Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Coronavirus
Coronaviruses, including the severe acute respiratory syndrome coronavirus (SARS-CoV), are enveloped viruses characterized by their single-stranded, positive-sense RNA genome and helical nucleocapsid structure. The hallmark of these viruses is their club-shaped spike (S) glycoproteins that protrude from the viral envelope, facilitating attachment to host cells. Typically, coronaviruses infect the upper respiratory tract, often causing mild or asymptomatic disease. However, certain strains like...


