Reassortment of Bunyavirus in ticks and animal models

项目摘要/摘要 被列为世卫组织最危险的九种病原体之一，SFTSV迅速具有12%-30%的病死率 通过虱子与动物/人、人与人和动物与人之间的传播，并诱导 以血小板减少为特征的免疫性疾病。病毒的重新分类是一个过程 一种基因重组，这种基因重组是节段式RNA病毒所独有的，在这种病毒中，一个细胞同时感染 携带多个病毒的自然宿主和载体的组合可能导致基因片段的洗牌 用新的基因组组合产生后代病毒。重新排序对病毒有很大影响 适合性，并直接影响抗原变异，混淆了现有的病毒控制方法。在……里面 在这个应用中，我们将检验扁虱介导的SFTSV感染的自然过程和 重组引入了适应性、遗传性、抗原性或致病性的表型变化。 变成了后代的重新组合。这项研究的目的是演示SFTSV的自然过程 体外感染和重组对适合性、免疫原性、传播性和致病性的影响 活体动物模型和长角毛滴虫，最终将基础研究与临床联系起来 申请。

Project Summary/Abstract Listed in the WHO top nine most dangerous pathogens, SFTSV has 12-30% fatality rates, rapidly spreads through tick-to-animal/human, human-to-human and animal-to-human and induces immunopathogenic disease with a characteristic thrombocytopenia. Virus reassortment is a process of genetic recombination that is exclusive to segmented RNA viruses in which co-infection of a cell of natural host and vector with multiple viruses may result in the shuffling of gene segments to generate progeny viruses with novel genome combinations. Reassortment greatly affects virus fitness and directly influences antigenic variation, confounding available methods of virus control. In this application, we will test the hypothesis that tick-mediated natural course of SFTSV infection and reassortment introduces phenotypic changes of fitness, transmissibility, antigenicity, or pathogenicity into progeny reassortants. The goal of this study is to demonstrate the natural course of SFTSV infection and reassortment for fitness, immunogenicity, transmissibility, and pathogenesis in in vitro and in vivo animal models and H. longicornis ticks, ultimately bridging basic research to clinical application.