通过序列同样性和计算分析预测orthoflaviviruses中的免疫反应目标
Venkata N Are1,2, Rajarshi Roy1,3, Sandeep Kumar Dhanda4
1Department of Biosciences and Biomedical Engineering, Indian Institute of Technology, Indore, 453552, MP, India.
Journal of molecular modeling
|July 31, 2024
概括
研究人员在Kyasanur森林疾病病毒 (KFDV),Alkhumra出血热病毒 (ALKV) 和传播脑炎病毒 (TBEV) 中确定了保存的病毒包膜蛋白质表位. 这些表位体显示出开发具有降低抗体依赖增强 (ADE) 的有效弗拉维病毒疫苗和疗法的潜力.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 疫苗开发 疫苗开发
背景情况:
- 弗拉维病毒,包括KFDV,ALKV和TBEV,导致严重的人类疾病,如出血性发烧和脑炎.
- 关于这些显著的黄状病毒的特定免疫点的信息有限.
- 这项研究的重点是识别病毒包膜蛋白内潜在的抗原性表位.
研究的目的:
- 预测和描述KFDV,ALKV和TBEV的包膜蛋白上的T细胞和B细胞表位.
- 为潜在的疫苗开发,在这三种黄病毒中识别保存的表位.
- 评估已识别的表位在引起保护性免疫反应和减少抗体依赖增强 (ADE) 的潜力.
主要方法:
- 利用免疫表皮层数据库和分析资源 (IEDB-AR) 来识别MHC-I,MHC-II和B细胞线性/不连续表皮层.
- 分析了KFDV,ALKV和TBEV的包膜蛋白中存在的保存表位.
- 进行了预测不连续表位体的结构比较,与相关的黄病毒 (DENV,ZIKV,WNV,TBEV,LIV) 的抗体结构进行比较.
主要成果:
- 鉴定了KFDV/ALKV的13个MHC-I和2个MHC-II表位,以及TBEV的6个MHC-I和3个MHC-II表位.
- 在所有三种病毒包膜蛋白中预测保存的B细胞线性和不连续的表位.
- 结构分析突出显示,侧脊表皮图 (ED-III域) 和封面二度表皮图 (EDE) 是有前途的目标.
结论:
- 在KFDV,ALKV和TBEV包膜蛋白中保存的表位被确定为疫苗和治疗抗体开发的潜在目标.
- 侧脊和EDE表位特别有希望在创造强大的疫苗候选人方面.
- 预测的表位可能会降低在黄病毒感染中抗体依赖增强 (ADE),提高安全性和疗效.
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