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Modification of messenger RNA by 2'-O-methylation regulates gene expression in vivo.

ABSTRACT: Epitranscriptomic modifications of mRNA are important regulators of gene expression. While internal 2'-O-methylation (Nm) has been discovered on mRNA, questions remain about its origin and function in cells and organisms. Here, we show that internal Nm modification can be guided by small nucleolar RNAs (snoRNAs), and that these Nm sites can regulate mRNA and protein expression. Specifically, two box C/D snoRNAs (SNORDs) and the 2'-O-methyltransferase fibrillarin lead to Nm modification in the protein-coding region of peroxidasin (Pxdn). The presence of Nm modification increases Pxdn mRNA expression but inhibits its translation, regulating PXDN protein expression and enzyme activity both in vitro and in vivo. Our findings support a model in which snoRNA-guided Nm modifications of mRNA can regulate physiologic gene expression by altering mRNA levels and tuning protein translation.

SUBMITTER: Elliott BA

PROVIDER: S-EPMC6667457 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Modification of messenger RNA by 2'-O-methylation regulates gene expression in vivo.

Elliott Brittany A BA Ho Hsiang-Ting HT Ranganathan Srivathsan V SV Vangaveti Sweta S Ilkayeva Olga O Abou Assi Hala H Choi Alex K AK Agris Paul F PF Holley Christopher L CL

Nature communications 20190730 1

Epitranscriptomic modifications of mRNA are important regulators of gene expression. While internal 2'-O-methylation (Nm) has been discovered on mRNA, questions remain about its origin and function in cells and organisms. Here, we show that internal Nm modification can be guided by small nucleolar RNAs (snoRNAs), and that these Nm sites can regulate mRNA and protein expression. Specifically, two box C/D snoRNAs (SNORDs) and the 2'-O-methyltransferase fibrillarin lead to Nm modification in the pr ...[more]

PMID: 31363086

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Modification of messenger RNA by 2'-O-methylation regulates gene expression in vivo.

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Modification of messenger RNA by 2'-O-methylation regulates gene expression in vivo.

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