| ACE-score-based Analysis of Temporal miRNA Targetomes During Human Cytomegalovirus Infection Using AGO-CLIP-seq
|
|
Author:
Date:
2016-04-20
[Abstract] Although temporal regulation of gene expression during the course of infection is known to be critical for determining the outcome of host-virus interactions, systematic temporal analysis of the miRNA targetomes during productive viral infection has been technically challenging due to the large range of miRNA-mRNA cross-talks at the host-virus interface. High-confidence quantifying models of the suppression efficacy in targeting sites by integrating bioinformatics with Argonaute-crosslinking and immunoprecipitation followed by high-throughput sequencing (AGO-CLIP-seq) (Chi et al., 2009) data have been poorly developed. To accurately identify miRNA target sites and calculate the targeting efficacy of miRNA-target interactions, we developed a new bioinformatic quantitation method, ...
[摘要] 尽管已知在感染过程中基因表达的时间调节对于确定宿主 - 病毒相互作用的结果是至关重要的，但是在生产性病毒感染期间对miRNA targetomes的系统时间分析在技术上是具有挑战性的，因为大范围的miRNA- mRNA在主机 - 病毒接口交叉对话。数据通过将生物信息学与Argonaute-交联和免疫沉淀接着高通量测序（AGO-CLIP-seq）数据（Chi等人，2009）数据结合，已经不发达。为了准确地鉴定miRNA靶位点并计算miRNA-靶相互作用的靶向效果，我们开发了新的生物信息学定量方法，即AGO-CLIP-seq富集（ACE） - 评分算法（Kim等， 2015）。在我们的AGO-CLIP-seq分析中包括未感染的对照可以显着提高病毒或人miRNA的真实靶位点识别的准确性，并且在我们的ACE评分方法中提取生产性人巨细胞病毒（HCMV）感染期间的生理学显着变化。因此，我们建议我们新的基于ACE评分的方法可以应用于各种miRNA targetome研究，这将在其他类型的时间背景下进行，如发展阶段，细胞因子或病原体的免疫刺激和其他病毒。
|
|
|
| Mitochondrial RNA Transcript Analysis Assay of Arabidopsis Leaf Tissues
|
|
Author:
Date:
2015-10-20
[Abstract] This qPCR-based assay provides an overview of the expression levels of all mitochondrial transcripts (mRNAs and rRNAs) as well as splicing efficiency in Arabidopsis. It was developed before RNAseq techniques were widely used (de Longevialle et al., 2007), but is nevertheless still useful as it is cheaper to run and the analysis is much easier and faster to perform if the aim is only to look at mitochondrial transcripts. For intron-containing mRNAs, the use of primer sets specifically amplifying spliced or unspliced forms allows the evaluation of the splicing efficiency.
[摘要] 这种基于qPCR的测定提供了所有线粒体转录物（mRNA和rRNA）的表达水平以及拟南芥中的剪接效率的概述。 它是在RNAseq技术被广泛使用之前开发的（de Longevialle等人，2007），但是仍然有用，因为它运行更便宜，并且分析更容易和更快地执行，如果目标 只是看看线粒体转录物。 对于含内含子的mRNA，使用特异性扩增剪接或未剪接形式的引物组允许评价剪接效率。
|
|
|
| Determining the Relative Fitness Score of Mutant Viruses in a Population Using Illumina Paired-end Sequencing and Regression Analysis
|
|
Author:
Date:
2015-05-20
[Abstract] Recent advances in DNA sequencing capacity to accurately quantify the copy number of individual variants in a large and diverse population allows in parallel determination of the phenotypic effects caused by each genetic modification. This systematic profiling approach is a combination of forward and reverse genetics, which we refer to as quantitative high-resolution genetics (qHRG). This protocol describes how to determine the relative fitness score of each variant compared to wild type (WT) virus based on its frequency determined by Illumina sequencing. Random mutagenesis techniques will be used to introduce randomization at each codon position of the targeted region, thereby generating a comprehensive input mutant library with substitutions at each position of interest (Qi et al. ...
[摘要] DNA测序能力的最近进展，准确量化大和多样群体中单个变体的拷贝数允许平行测定由每个遗传修饰引起的表型效应。这种系统分析方法是正向和反向遗传学的组合，我们称之为定量高分辨率遗传学（qHRG）。该方案描述了如何基于其通过Illumina测序确定的频率来确定每个变体与野生型（WT）病毒相比的相对适合度评分。随机诱变技术将用于在目标区域的每个密码子位置引入随机化，从而产生在每个感兴趣位置具有取代的综合输入突变文库（Qi等人，2014; Wu 等人，2014a; Wu ，2014b）。选择后，每个选定的文库将通过Illumina配对末端测序进行测序，并且确定每个突变的频率。基于频率的变化，可以用回归分析计算每个突变体的相对适合度分数。
|
|
|