MicroRNA regulation and interspecific variation of gene expression |
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Authors: | Cui Qinghua Yu Zhenbao Purisima Enrico O Wang Edwin |
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Affiliation: | Biotechnology Research Institute, National Research Council Canada, Montreal, Quebec, H4P 2R2, Canada. |
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Abstract: | MicroRNAs (miRNAs) modulate expression of their target genes in various tissues and at different developmental stages, but it is unclear whether they drive cross-species variation in gene expression. By comparing data from mammal and fly species we found that the cross-species expression variation of miRNA targets is significantly lower than that of other genes. This implies that miRNAs can affect gene expression by reducing stochastic noise, buffering cross-species variation and constraining evolutionary gene expression variation. |
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