Volume 57, Issue 51 pp. 16785-16790
Communication

AlkAniline-Seq: Profiling of m7G and m3C RNA Modifications at Single Nucleotide Resolution

Virginie Marchand

Virginie Marchand

Lorraine University, UMS2008 IBSLor CNRS-UL-INSERM, Biopôle UL, 9, Avenue de la Forêt de Haye, 54505 Vandoeuvre-les-Nancy, France

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Lilia Ayadi

Lilia Ayadi

Lorraine University, UMS2008 IBSLor CNRS-UL-INSERM, Biopôle UL, 9, Avenue de la Forêt de Haye, 54505 Vandoeuvre-les-Nancy, France

Lorraine University, UMR7365 IMoPA CNRS-UL, Biopôle UL, 9, Avenue de la Forêt de Haye, 54505 Vandoeuvre-les-Nancy, France

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Felix G. M. Ernst

Felix G. M. Ernst

RNA Molecular Biology, ULB-Cancer Research Center (U-CRC), Center for Microscopy and Molecular Imaging (CMMI), Fonds de la Recherche Scientifique (FRS), Université Libre de Bruxelles (ULB), BioPark campus, Gosselies, Belgium

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Jasmin Hertler

Jasmin Hertler

Institute of Pharmacy and Biochemistry, Johannes Gutenberg University Mainz, Staudingerweg 5, 55128 Mainz, Germany

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Valérie Bourguignon-Igel

Valérie Bourguignon-Igel

Lorraine University, UMS2008 IBSLor CNRS-UL-INSERM, Biopôle UL, 9, Avenue de la Forêt de Haye, 54505 Vandoeuvre-les-Nancy, France

Lorraine University, UMR7365 IMoPA CNRS-UL, Biopôle UL, 9, Avenue de la Forêt de Haye, 54505 Vandoeuvre-les-Nancy, France

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Adeline Galvanin

Adeline Galvanin

Lorraine University, UMR7365 IMoPA CNRS-UL, Biopôle UL, 9, Avenue de la Forêt de Haye, 54505 Vandoeuvre-les-Nancy, France

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Annika Kotter

Annika Kotter

Institute of Pharmacy and Biochemistry, Johannes Gutenberg University Mainz, Staudingerweg 5, 55128 Mainz, Germany

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Mark Helm

Mark Helm

Institute of Pharmacy and Biochemistry, Johannes Gutenberg University Mainz, Staudingerweg 5, 55128 Mainz, Germany

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Denis L. J. Lafontaine

Denis L. J. Lafontaine

RNA Molecular Biology, ULB-Cancer Research Center (U-CRC), Center for Microscopy and Molecular Imaging (CMMI), Fonds de la Recherche Scientifique (FRS), Université Libre de Bruxelles (ULB), BioPark campus, Gosselies, Belgium

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Yuri Motorin

Corresponding Author

Yuri Motorin

Lorraine University, UMS2008 IBSLor CNRS-UL-INSERM, Biopôle UL, 9, Avenue de la Forêt de Haye, 54505 Vandoeuvre-les-Nancy, France

Lorraine University, UMR7365 IMoPA CNRS-UL, Biopôle UL, 9, Avenue de la Forêt de Haye, 54505 Vandoeuvre-les-Nancy, France

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First published: 29 October 2018
Citations: 140

Graphical Abstract

Deep sequencing was applied in a new concept of library preparation for detection of RNA modifications. Modified RNA is treated by alkaline hydrolysis, dephosphorylated, and subjected to aniline cleavage of abasic sites. The resulting 5′-phosphates in RNA are used for specific ligation of the sequencing adapter. The method can be applied for specific and sensitive detection of m7G, m3C, and (D) residues in RNAs.

Abstract

RNA modifications play essential roles in gene expression regulation. Only seven out of >150 known RNA modifications are detectable transcriptome-wide by deep sequencing. Here we describe a new principle of RNAseq library preparation, which relies on a chemistry based positive enrichment of reads in the resulting libraries, and therefore leads to unprecedented signal-to-noise ratios. The proposed approach eschews conventional RNA sequencing chemistry and rather exploits the generation of abasic sites and subsequent aniline cleavage. The newly generated 5′-phosphates are used as unique entry for ligation of an adapter in library preparation. This positive selection, embodied in the AlkAniline-Seq, enables a deep sequencing-based technology for the simultaneous detection of 7-methylguanosine (m7G) and 3-methylcytidine (m3C) in RNA at single nucleotide resolution. As a proof-of-concept, we used AlkAniline-Seq to comprehensively validate known m7G and m3C sites in bacterial, yeast, and human cytoplasmic and mitochondrial tRNAs and rRNAs, as well as for identifying previously unmapped positions.

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