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Cytosine methylation of mature microRNAs inhibits their functions and is associated with poor prognosis in glioblastoma multiforme ArchiMer
Cheray, Mathilde; Etcheverry, Amandine; Jacques, Camille; Pacaud, Romain; Bougras-cartron, Gwenola; Aubry, Marc; Denoual, Florent; Peterlongo, Pierre; Nadaradjane, Arulraj; Briand, Josephine; Akcha, Farida; Heymann, Dominique; Vallette, François M.; Mosser, Jean; Ory, Benjamin; Cartron, Pierre-françois.
Background Literature reports that mature microRNA (miRNA) can be methylated at adenosine, guanosine and cytosine. However, the molecular mechanisms involved in cytosine methylation of miRNAs have not yet been fully elucidated. Here we investigated the biological role and underlying mechanism of cytosine methylation in miRNAs in glioblastoma multiforme (GBM). Methods RNA immunoprecipitation with the anti-5methylcytosine (5mC) antibody followed by Array, ELISA, dot blot, incorporation of a radio-labelled methyl group in miRNA, and miRNA bisulfite sequencing were perfomred to detect the cytosine methylation in mature miRNA. Cross-Linking immunoprecipiation qPCR, transfection with methylation/unmethylated mimic miRNA, luciferase promoter reporter plasmid,...
Tipo: Text Palavras-chave: MiRNA; Cytosine-methylation; Epigenetics; DNMT3A; AGO4; Glioblastoma; Epitranscriptomics.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00610/72196/70980.pdf
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