Publication date: Nov 06, 2019
Aim: Growing evidence shows a strong interplay between post-transcriptional regulation, mediated by miRs and epigenetic regulation. Nevertheless, the number of experimentally validated miRs (called epi-miRs) involved in these regulatory circuitries is still very small. Material & methods: We propose a pipeline to prioritize candidate epi-miRs and to identify potential epigenetic interactors of any given miR starting from miR transfection experiment datasets. Results & conclusion: We identified 34 candidate epi-miRs: 19 of them are known epi-miRs, while 15 are new. Moreover, using an in-house generated gene expression dataset, we experimentally proved that a component of the polycomb-repressive complex 2, the histone methyltransferase enhancer of zeste homolog 2 (EZH2), interacts with miR-214, a well-known prometastatic miR in melanoma and breast cancer, highlighting a miR-214-EZH2 regulatory axis potentially relevant in tumor progression.
Reale, E., Taverna, D., Cantini, L., Martignetti, L., Osella, M., Pitt`a, C., Virga, F., Orso, F., and Caselle, M. Investigating the epi-miRNome: identification of epi-miRNAs using transfection experiments. 24691. 2019 Epigenomics.