Inferring population genetics parameters of evolving viruses using time-series data

Inferring population genetics parameters of evolving viruses using time-series data
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使用时间序列数据推断进化病毒的群体遗传学参数

DOI:
10.1093/ve/vez011
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发表时间:
2019
期刊:
影响因子:
5.3
通讯作者:
Stern, Adi
Stern, Adi
中科院分区:
医学2区
文献类型:
--
作者:
Zinger, Tal;Gelbart, Maoz;Miller, Danielle;Pennings, Pleuni S;Stern, Adi

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随着深度测序技术的出现,现在可以越来越详细地追踪病毒的进化。在这里,我们提出了灵活的时间序列推断(FITS)——一种计算工具,可以根据基因组时间序列测序数据推断三个参数之一:特定突变的适合度、突变率或群体大小。 FITS 的设计首先是为了分析短期进化和重测序 (E&R) 实验或快速重组病毒群体。我们深入探讨了 FITS 在模拟数据上的性能,并强调其推断适应度/突变率/种群规模的能力。我们进一步表明,即使输入参数不精确,FITS 也可以推断出有意义的信息。特别是,FITS 能够成功地将突变分类为有利或有害。接下来,我们将 FITS 应用于脊髓灰质炎病毒 E&R 实验的经验数据,其中参数是通过实验确定的,并证明了推论的高精度。
With the advent of deep sequencing techniques, it is now possible to track the evolution of viruses with ever-increasing detail. Here, we present Flexible Inference from Time-Series (FITS)—a computational tool that allows inference of one of three parameters: the fitness of a specific mutation, the mutation rate or the population size from genomic time-series sequencing data. FITS was designed first and foremost for analysis of either short-term Evolve & Resequence (E&R) experiments or rapidly recombining populations of viruses. We thoroughly explore the performance of FITS on simulated data and highlight its ability to infer the fitness/mutation rate/population size. We further show that FITS can infer meaningful information even when the input parameters are inexact. In particular, FITS is able to successfully categorize a mutation as advantageous or deleterious. We next apply FITS to empirical data from an E&R experiment on poliovirus where parameters were determined experimentally and demonstrate high accuracy in inference.
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