一种针对甲型流感病毒神经氨基酶活性位点的保护性和异型亚型抗体系
Ty A Sornberger1,2, Rachael M Wolters1,2, Iuliia M Gilchuk2
1Department of Pathology, Microbiology, and Immunology and.
The Journal of clinical investigation
|December 1, 2025
概括
研究人员确定了人类单克隆抗体 (mAbs),这些抗体向甲型流感病毒 (IAV) 神经aminidase. 这些抗体对不同的IAV亚型具有交叉反应性,并具有治疗流感感染的潜力.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- 甲型流感病毒 (IAV) 由于在人类群体中经常循环,因此构成了全球重大公共卫生威胁.
- 了解对IAVs的免疫反应对于开发有效的对策至关重要.
- 人类单克隆抗体 (mAbs) 为对抗病毒感染的治疗干预提供了一个有希望的途径.
研究的目的:
- 为了分离和描述针对IAV神经氨基酶 (NA) 的人类mAbs.
- 研究这些mAbs与不同IAV亚型的交叉反应性.
- 评估已识别的mAbs对IAV感染的治疗潜力.
主要方法:
- 从大量流感暴露的个体中分离人类mAbs.
- 识别一种识别IAV NA糖蛋白的B细胞系.
- 在NA活性位点附近的mAb结合和化酶活性抑制的表征.
- 评估体突变对异型亚型交叉反应性的影响.
- 在体外和体内对抗病毒活性候选mAbs (FluA-168和FluA-173) 的评估.
主要成果:
- 确定了生产针对IAV NA的mAbs的A B细胞系.
- 一些mAbs表现出对N1和N9亚型的交叉反应性,通过体质突变获得.
- 候选mAbsFluA-168和FluA-173在体外强烈抑制了IAV复制.
- 这些mAbs在体内提供了对致命的IAV挑战的保护.
结论:
- 身体突变可以在流感特异性B细胞系中驱动异型亚型交叉反应.
- FluA-168和FluA-173是IAV复制的强有力的抑制剂,并代表潜在的治疗候选者.
- 这项研究增强了对IAV亚型交叉反应性和对各种暴露的抗体反应的理解.
更多相关视频
04:47A Method to Assess Fc-mediated Effector Functions Induced by Influenza Hemagglutinin Specific Antibodies
Published on: February 23, 2018
8.1K
09:31Fluorescence-based Neuraminidase Inhibition Assay to Assess the Susceptibility of Influenza Viruses to The Neuraminidase Inhibitor Class of Antivirals
Published on: April 15, 2017
18.9K
相关概念视频
02:28Leaky Scanning
5.6K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.6K
01:29Immune Response Against Viral Pathogens
1.7K
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...
1.7K