HBe抗原特异性多克隆抗体与HBc抗原的交叉反应性
Maryam Hojatizadeh1, Mohammad Mehdi Amiri1, Maryam Mobini1
1Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Viral immunology
|June 9, 2023
概括
乙型肝炎病毒 (HBV) 电子抗原 (HBeAg) 测定显示与乙型肝炎病毒核心抗原 (HBcAg) 的交叉反应性. 从抗HBe抗体中吸附HBcAg并没有解决交叉反应性,这表明类似的表位物阻止了分化.
科学领域:
- 乙型肝炎病毒 (HBV) 研究
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 乙型肝炎病毒 (HBV) 感染是一个重大的全球健康问题,每年导致近100万人的死亡.
- 肝炎病毒核心基因编码了乙型肝炎病毒核心抗原 (HBcAg) 和可溶性变体,乙型肝炎病毒e抗原 (HBeAg),这是疾病严重程度和查的标志物.
- 目前对HBeAg的诊断试验存在与HBcAg的交叉反应,这限制了它们的诊断准确性.
研究的目的:
- 研究抗HBe多克隆抗体的特异性,特别是在与HBcAg吸附后,以区分HBeAg和HBcAg.
- 评估开发更准确的B型肝炎病毒感染诊断工具的潜力.
主要方法:
- 重组HBeAg在大肠杆菌中得到表达,并经过净化.
- 在子中使用纯化的HBeAg.生成了多克隆抗HBe抗体.
- 开发了一种酶相关的免疫吸收试验 (ELISA) 来评估HBeAg和HBcAg之间的抗体反应性和交叉反应性,包括HBcAg吸收的抗体.
主要成果:
- 重组HBeAg与慢性HBV感染患者中发现的原生HBeAg具有抗原相似性.
- 使用子抗HBe多克隆抗体开发的ELISA检测出具有高灵敏度的重组HBeAg.
- 最重要的是,HBcAg吸附的抗HBe多克隆抗体与HBcAg具有显著的交叉反应性,无法区分这两种抗原.
结论:
- 观察到的高度交叉活性,即使在吸附后,也表明HBcAg和HBeAg具有非常相似的表位.
- 目前基于抗体的方法,包括吸附方法,不足以在诊断试验中可靠地区分HBeAg和HBcAg.
- 需要进一步的研究来开发诊断策略,可以特别区分这两个重要的乙型肝炎病毒抗原.
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