通过使用共识抗原发现广泛中和VHHs来中和长链α-神经毒素背后的结构机制
Anna Damsbo1,2, Nick J Burlet1, Monica L Fernández-Quintero1,3
1Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark.
Communications chemistry
|July 18, 2025
概括
开发广泛中和抗体是毒蛇毒的关键. 这项研究使用了共识α-神经毒素 (LCC) 发现强大的中和抗体 (VHHs) 对各种蛇毒毒素有效.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 热带疾病 热带疾病
背景情况:
- 蛇毒是一种被忽视的热带疾病,对全球健康产生重大影响.
- 蛇毒的抗原变异对开发有效的抗毒提出了挑战.
- 广泛中和单克隆抗体是一种有前途的治疗策略.
研究的目的:
- 设计一个共识α-神经毒素 (LCC) 作为抗体发现的抗原.
- 识别和描述针对蛇毒毒素的仅重链抗体 (VHHs) 的广泛中和性.
- 阐明一个领先的VHH候选物的结合机制.
主要方法:
- 菌体显示技术用于抗体库查.
- 酵母表达系统被用来产生LCC抗原.
- 进行了结合亲和力,体外中和化试验和联合晶体学.
主要成果:
- 从免疫图书馆中使用LCC抗原识别了21个VHHs.
- 一个VHH,TPL1158_01_C09,表现出广泛的交叉反应性和对α-神经毒素的高度亲和力.
- 结构分析揭示了结合机制,体内研究证实了中和潜力.
结论:
- 一种共识毒素抗原方法成功地确定了广泛中和的VHHs.
- TPL1158_01_C09显示出作为治疗毒蛇毒的治疗剂的潜力.
- 这一战略为开发下一代抗毒药提供了一个有前途的途径.
相关概念视频
Antibody Actions
1.4K
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...
1.4K
Antigens Involved in Adaptive Immunity
688
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...
Complete Antigens
Complete antigens possess both immunogenicity and...
688


