The Epitranscriptome in miRNAs: Crosstalk, Detection, and Function in Cancer

Author:

del Valle-Morales Daniel,Le PatriciaORCID,Saviana Michela,Romano Giulia,Nigita GiovanniORCID,Nana-Sinkam Patrick,Acunzo Mario

Abstract

The epitranscriptome encompasses all post-transcriptional modifications that occur on RNAs. These modifications can alter the function and regulation of their RNA targets, which, if dysregulated, result in various diseases and cancers. As with other RNAs, miRNAs are highly modified by epitranscriptomic modifications such as m6A methylation, 2′-O-methylation, m5C methylation, m7G methylation, polyuridine, and A-to-I editing. miRNAs are a class of small non-coding RNAs that regulates gene expression at the post-transcriptional level. miRNAs have gathered high clinical interest due to their role in disease, development, and cancer progression. Epitranscriptomic modifications alter the targeting, regulation, and biogenesis of miRNAs, increasing the complexity of miRNA regulation. In addition, emerging studies have revealed crosstalk between these modifications. In this review, we will summarize the epitranscriptomic modifications—focusing on those relevant to miRNAs—examine the recent crosstalk between these modifications, and give a perspective on how this crosstalk expands the complexity of miRNA biology.

Funder

National Institutes of Health

Publisher

MDPI AG

Subject

Genetics (clinical),Genetics

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