Journal Article

DKFZ-2017-01550

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A probabilistic generative model for quantification of DNA modifications enables analysis of demethylation pathways.

Äijö, T. ; Huang, Y. ; Mannerström, H. ; Chavez, L.DKFZ* ; Tsagaratou, A. ; Rao, A. ; Lähdesmäki, H.

2016
BioMed Central London

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Please use a persistent id in citations: doi:10.1186/s13059-016-0911-6

Abstract: We present a generative model, Lux, to quantify DNA methylation modifications from any combination of bisulfite sequencing approaches, including reduced, oxidative, TET-assisted, chemical-modification assisted, and methylase-assisted bisulfite sequencing data. Lux models all cytosine modifications (C, 5mC, 5hmC, 5fC, and 5caC) simultaneously together with experimental parameters, including bisulfite conversion and oxidation efficiencies, as well as various chemical labeling and protection steps. We show that Lux improves the quantification and comparison of cytosine modification levels and that Lux can process any oxidized methylcytosine sequencing data sets to quantify all cytosine modifications. Analysis of targeted data from Tet2-knockdown embryonic stem cells and T cells during development demonstrates DNA modification quantification at unprecedented detail, quantifies active demethylation pathways and reveals 5hmC localization in putative regulatory regions.

Keyword(s): DNA-Binding Proteins ; 5-Methylcytosine ; Cytosine ; DNA

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Contributing Institute(s):

1. Pädiatrische Neuroonkologie (B062)

Research Program(s):

1. 312 - Functional and structural genomics (POF3-312) (POF3-312)

Appears in the scientific report 2016

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