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5-Fluorouracil, 5-FU

5-氟尿嘧啶

Company: Sigma-Aldrich
Catalog#: F6627
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Measuring Genetic Robustness in Vesicular Stomatitis Virus
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Date:
2014-03-20
[Abstract]  Genetic robustness is the ability of a genome to incorporate mutations with the result of no fitness changes. Thus, more robust viruses have an increased neutral mutation rate. This property is particularly important in RNA viruses due to their high mutation rates. The most direct way of measuring robustness in vesicular stomatitis virus (VSV) is to carry out clonal analysis of populations: randomly isolating individual VSV strains (plaques), measuring the fitness of each one and generating fitness distributions (Novella et al., 2010). A second possibility is to carry out multiple replicates of repeated plaque-to-plaque passages, determining fitness in progeny populations and generating fitness distributions (Novella et al., 2010). Depending on the expected differences, ... [摘要]  遗传稳健性是基因组掺入突变的能力,没有适应度变化的结果。因此,更强壮的病毒具有增加的中性突变率。由于它们的高突变率,这种性质在RNA病毒中特别重要。测量水泡性口炎病毒(VSV)的稳健性的最直接的方法是进行群体的克隆分析:随机分离个体VSV株(噬斑),测量每个VSV株的适合度并产生适应度分布(Novella等人, ,2010)。第二种可能性是进行重复的斑块到斑块通道的多次重复,确定后代群体中的适合度并产生健身分布(Novella等人,2010)。根据预期的差异,前者可能需要数百个测定,而后者可能需要数十次测定。第三种方法包括增加分析中的群体的突变率以扩大可能存在的任何差异,并且代替测量适合度,测量存活率(Novella等人,2013)。该方法的一个警告是生存的变化也可以通过聚合酶保真度的变化来解释。因此,重要的是进行互补实验,在这种情况下量化突变频率。

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