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探索猪肉病毒3型体蛋白的表面表位和核定位分析

Chia-Chun Chang¹, Ching-Ying Wu¹, Jhao-Guan Ciou¹

¹Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, 145 Xingda Road, Taichung, 40227, Taiwan.

|December 8, 2023

概括

一种新的单克隆抗体 (MAb CCC160) 有助于诊断猪肉循环病毒3 (PCV3) 并了解其病变. 这种抗体向PCV3囊蛋白,这对于开发诊断工具和疫苗至关重要.

科学领域:

兽医病毒学兽医病毒学
免疫学免疫学免疫学
分子生物学分子生物学

背景情况:

猪圈病毒3 (PCV3) 是一种新兴的病毒,与PDNS和生殖问题等重大猪病有关.
PCV3囊蛋白 (Cap) 具有高度的抗原性,是疫苗和诊断开发的关键目标.

研究的目的:

开发一种针对PCV3 Cap的单克隆抗体 (MAb CCC160) 用于诊断和研究应用.
描述PCV3 Cap.的抗原性质和致病机制.

主要方法:

特定于PCV3的MAb CCC160的生成和表征 Cap.
对PCV3感染的组织进行免疫组合化学分析.
对PCV3 Cap.的皮层映射和核定位信号 (NLS) 分析.
细胞活力测试用于评估Cap细胞毒性.
使用baculovirus系统表达和净化复合PCV3Cap,导致病毒样颗粒 (VLP) 的形成.

主要成果:

MAb CCC160通过识别PCV3感染的猪淋巴结来证明了诊断潜力.
在PCV3 Cap上发现了一种新的线性B细胞表位 (aa 120-134).
PCV3 Cap既具有N终端,也有一个新发现的中间NLS (aa 131-143).
PCV3 Cap的细胞毒性与其核定位相关,这表明它在病变发生过程中发挥了作用.
重组PCV3 Cap自组装成VLP,其表面显示已识别的表位.

结论:

MAb CCC160是PCV3诊断和发病研究的一个有价值的工具.
了解PCV3 Cap的核定位和细胞毒性,可以了解病毒机制.
开发PCV3 VLP为创造有效的诊断试剂和亚单元疫苗提供了一个有希望的途径.

关键词:

卡普西德蛋白质是一种卡普西德蛋白质.细胞毒性细胞毒性单克隆抗体是一种单克隆抗体.核部位定位核部位定位猪圈病毒 3 猪圈病毒 3 类似病毒的粒子.

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