马赛克RBD纳米颗粒在sarbecoviruses中引起免疫主导抗体反应
Chuanyu Liu1, Senyu Xu2, Yuxuan Zheng3
1College of Animal Science and Veterinary Medicine, Guangxi University, Nanning 530004, Guangxi, China; CAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.
Cell reports
|May 15, 2024
概括
显示多种sarbecovirus受体结合域的马赛克纳米粒子诱导交叉中和抗体. 这些纳米颗粒激活B细胞识别保存的病毒表位,增强对动物传染病爆发的准备.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 疫苗开发 疫苗开发
背景情况:
- 针对动物传播疫情的准备依赖于显示受体结合域 (RBD) 或来自SARS-CoV-2和其他sarbecoviruses的尖端蛋白的纳米粒子疫苗.
- 马赛克纳米颗粒提供了一种策略,可以为更广泛的免疫反应提供多种病毒抗原.
研究的目的:
- 开发和表征自组装的卢马合成酶 (LuS) 纳米粒子,显示各种萨尔贝科病毒的马赛克RBD.
- 评估这些马赛克纳米粒子引起的免疫性和中和抗体反应的范围.
主要方法:
- 自组装卢马合成酶 (LuS) 纳米颗粒的构建,显示来自不同萨尔贝科病毒的马赛克RBD.
- 免疫研究评估抗体反应和B细胞受体谱.
- 单克隆抗体 (mAb) 鉴定,竞争试验和冷电子显微镜 (cryo-EM) 用于确定表位组结合.
主要成果:
- 马赛克纳米粒子诱导了sarbecovirus交叉中和抗体,与纳米粒子尾酒相当.
- 引起了特定的B细胞受体谱 (IGHV14-3:IGKV14-111),大多数衍生 mAbs 显示了广泛的交叉反应性.
- 一个代表的mAb结合了一个保存的RBD表位,与已知的泛沙尔贝科病毒mAb重叠,表明识别了常见表位.
结论:
- 马赛克纳米粒子有效地扩大了B细胞对保存的萨尔贝科病毒表位的识别.
- 这些发现为开发使用马赛克抗原显示对sarbecoviruses广泛保护性疫苗提供了免疫学见解.
关键词:
CP: 免疫学 免疫学相关概念视频
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Rous Sarcoma Virus (RSV) and Cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...


