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Human RSV strain A2

人RSV病毒株A2

公司名称: ATCC
产品编号: VR-1540TM
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Respiratory Syncytial Virus Infection in Mice and Detection of Viral Genomes in the Lung Using RT-qPCR
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Date:
2016-05-20
[Abstract]  Respiratory syncytial virus (RSV) is a single-stranded negative sense RNA virus that belongs to the paramyxovirus family. RSV infections lead to a variety of clinical outcomes ranging from a mild “cold-like disease” to death. Infection is usually more severe in infants and the elderly. RSV is associated with the development and exacerbation of chronic lung conditions including asthma, and it is a major cause of hospitalizations in infants. Because of its clinical relevance, experimental animal models to study RSV in vivo are needed. The most common and accessible animal ... [摘要]  呼吸道合胞病毒(RSV)是属于副粘病毒家族的单链负义RNA病毒。 RSV感染导致各种临床结果,从轻度"冷样疾病"到死亡。婴儿和老年人的感染通常更严重。 RSV与慢性肺病(包括哮喘)的发展和加重有关,并且是婴儿住院的主要原因。由于其临床相关性,需要用于在体内研究RSV的实验动物模型。研究实验室中最常见和可获得的动物模型是小鼠。然而,通常使用RSV毒株在小鼠中很少建立感染,因此从小鼠肺中滴定病毒以确认感染不足以检测早期病毒感染。在这里我们详细讨论如何感染BALB/c小鼠与RSV和如何使用逆转录定量PCR(RT-qPCR)肺中检测RSV基因组。这种方法允许早在感染后1天检测病毒基因组(图2所示),而传统的TCID 50不能检测到显着的病毒,直到感染后2天。值得注意的是,尽管灵敏度较高,但基因组RT-qPCR仅显示病毒基因组的产生,因此该测定的阳性结果不是感染性病毒颗粒产生的证据。

Preparation of Respiratory Syncytial Virus with High or Low Content of Defective Viral Particles and Their Purification from Viral Stocks
Author:
Date:
2016-05-20
[Abstract]  Respiratory syncytial virus (RSV) belongs to the paramyxovirus family that includes many clinically relevant viruses, such as the human metapneumovirus and measles. RSV infection can cause severe disease in infants, the elderly, and some immunocompromised adults. During RSV replication, a series of truncated forms of the viral genome is generated. These truncated viral genomes are known as defective viral genomes (DVGs) and are generated by many viruses (Lazzarini et al., 1981; Rao and Huang, 1982; Prince et al., 1996; Sun et al., 2015; Tapia et al., ... [摘要]  呼吸道合胞病毒(RSV)属于包括许多临床相关病毒(例如人偏肺病毒和麻疹)的副粘病毒家族。 RSV感染可以在婴儿,老年人和一些免疫受损的成人中引起严重的疾病。在RSV复制期间,产生一系列截短形式的病毒基因组。这些截短的病毒基因组被称为缺陷型病毒基因组(DVG),并且由许多病毒产生(Lazzarini等人,1981; Rao和Huang,1982; Prince等人, ,1996; Sun等人,2015; Tapia等人,2013)。 DVG可以限制全长病毒的复制,并且是针对RSV的先天免疫应答的主要天然触发因子(Sun等人,2015; Tapia等人 ,2013)。在这里,我们详细讨论如何准备具有高或低含量的DVG的RSV股票,以及如何从富含缺陷病毒颗粒的RSV原液中纯化含有DVG的缺陷病毒颗粒。这些程序可用于制备实验室研究所需的病毒原液和有缺陷的病毒颗粒。简言之,在HEp2细胞中产生不同的RSV种群,其通常用于在实验室中扩增该病毒。为了产生具有高含量DVG的RSV原液,HEp2细胞用高多重感染(MOI)多次感染,然后使用梯度离心纯化含有DVG的病毒颗粒。这里描述的方法具有四个部分:1.具有低DVG含量(RSV-LD)的种子RSV原种的扩增,2.具有高DVG含量(RSV-HD)的原种的产生,3.通过梯度离心,4.纯化DVG的表征。

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