Functional Annotation of MicroRNAs Using Existing Resources.

MicroRNAs (miRNAs) are endogenous small noncoding RNAs that are involved in most biological signaling pathways, including the cell cycle, apoptosis, proliferation, immune response, metabolism as well as in biological processes including organ development and in human diseases like cancers. During the past two decades, high-throughput transcriptomic profiling using next generation sequencing and microarrays have been extensively utilized to identify differentially expressed miRNAs across different conditions and diseases. A natural extension of miRNA identification is to the process of functionally annotating known or predicted gene targets of those miRNAs and, by inference, revealing their potential influences on diverse biological pathways and functions. In this chapter, we provide a stepwise guideline on how to perform functional enrichment analyses on miRNAs of interest using publicly available resources such as miRWalk2.0.

Dweep H, Kossenkov AV, Showe LC

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Methods Mol Biol, 2022, 2257

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