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Human primary fibroblast culture medium: RPMI 1640 supplemented with 10% fetal bovine serum and 1% penicillin/streptomycin

Company: Fetal Bovine Serum
Catalog#: SH30071.03
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CRISPR/Cas Gene Editing of a Large DNA Virus: African Swine Fever Virus
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2018-08-20
[Abstract]  Gene editing of large DNA viruses, such as African swine fever virus (ASFV), has traditionally relied on homologous recombination of a donor plasmid consisting of a reporter cassette with surrounding homologous viral DNA. However, this homologous recombination resulting in the desired modified virus is a rare event. We recently reported the use of CRISPR/Cas9 to edit ASFV. The use of CRISPR/Cas9 to modify the African swine fever virus genome resulted in a fast and relatively easy way to introduce genetic changes. To accomplish this goal we first infect primary swine macrophages with a field isolate, ASFV-G, and transfect with the CRISPR/Cas9 donor plasmid along with a plasmid that will express a specific gRNA that targets our gene to be deleted. By inserting a reporter cassette, we are ... [摘要]  大型DNA病毒(例如非洲猪瘟病毒(ASFV))的基因编辑传统上依赖于由报道盒组成的供体质粒与周围同源病毒DNA的同源重组。然而,这种导致所需修饰病毒的同源重组是罕见的事件。我们最近报道了使用CRISPR / Cas9编辑ASFV。使用CRISPR / Cas9修饰非洲猪瘟病毒基因组导致了引入遗传变化的快速且相对简单的方法。为了实现这一目标,我们首先用田间分离株ASFV-G感染原代猪巨噬细胞,并用CRISPR / Cas9供体质粒转染质粒,该质粒将表达靶向我们基因的特异性gRNA被删除。通过插入报告盒,我们能够通过有限稀释和噬菌斑纯化从亲本中纯化我们的重组病毒。我们以前曾报道将传统的同源重组方法与CRISPR / Cas9进行比较,结果导致重组增加超过4个对数。

【背景】 非洲猪瘟(ASF)是一种由ASF病毒(ASFV)引起的高度致命的猪传染性病毒性疾病。 ASFV的基因组由大约180-190千碱基对的双链DNA基因组组成。 ASFV引起一系列疾病,从高度致命到亚临床,取决于宿主特征和病毒株(Tulman et al。,2009)。 ASFV没有商业疫苗;实验上,2007年格鲁吉亚爆发的唯一能够抵御目前流行病毒株的疫苗(ASFV-G)是含有一个或多个病毒基因组缺失的减毒活疫苗,例如:( O'Donnell et ...

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