Title
Hidden Markov modelling reveals neighborhood dependence of Dnmt3a and 3b activity.
Abstract
DNA methylation is an epigenetic mark whose important role in development has been widely recognized. This epigenetic modification results in heritable information not encoded by the DNA sequence. The underlying mechanisms controlling DNA methylation are only partly understood. Several mechanistic models of enzyme activities responsible for DNA methylation have been proposed. Here we extend existing Hidden Markov Models (HMMs) for DNA methylation by describing the occurrence of spatial methylation patterns over time and propose several models with different neighborhood dependences. Furthermore we investigate correlations between the neighborhood dependence and other genomic information. We perform numerical analysis of the HMMs applied to comprehensive hairpin and non-hairpin bisulfite sequencing measurements and accurately predict wild-type data. We find evidence that the activities of Dnmt3a and Dnmt3b responsible for de novo methylation depend on 5' (left) but not on 3' (right) neighboring CpGs in a sequencing string.
Year
DOI
Venue
2019
10.1109/TCBB.2019.2910814
IEEE/ACM transactions on computational biology and bioinformatics
Keywords
Field
DocType
Hidden Markov models,DNA,Biochemistry,Maintenance engineering,Data models,Predictive models,Genomics
Computer science,Bisulfite sequencing,DNA methylation,DNA,Genomics,Methylation,DNA sequencing,Artificial intelligence,Computational biology,Hidden Markov model,Machine learning,Epigenetics
Journal
Volume
Issue
ISSN
16
5
1557-9964
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Alexander Lück131.85
Pascal Giehr221.54
Karl Nordström331.10
Jörn Walter4415.97
Verena Wolf5227.27