MUSiCC: a marker genes based framework for metagenomic normalization and accurate profiling of gene abundances in the microbiome.
MUSiCC: a marker genes based framework for metagenomic normalization and accurate profiling of gene abundances in the microbiome.
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DOI:
10.1186/s13059-015-0610-8
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发表时间:
2015-03-25
期刊:
影响因子:
12.3
通讯作者:
Borenstein E
中科院分区:
文献类型:
--
作者:
Manor O;Borenstein E
Functional metagenomic analyses commonly involve a normalization step, where measured levels of genes or pathways are converted into relative abundances. Here, we demonstrate that this normalization scheme introduces marked biases both across and within human microbiome samples, and identify sample- and gene-specific properties that contribute to these biases. We introduce an alternative normalization paradigm, MUSiCC, which combines universal single-copy genes with machine learning methods to correct these biases and to obtain an accurate and biologically meaningful measure of gene abundances. Finally, we demonstrate that MUSiCC significantly improves downstream discovery of functional shifts in the microbiome. MUSiCC is available at http://elbo.gs.washington.edu/software.html. The online version of this article (doi:10.1186/s13059-015-0610-8) contains supplementary material, which is available to authorized users.
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