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Divergent neuronal DNA methylation patterns across human cortical development: Critical periods and a unique role of CpH methylation

Amanda J. Price, View ORCID ProfileLeonardo Collado-Torres, Nikolay A. Ivanov, Wei Xia, Emily E. Burke, Joo Heon Shin, Ran Tao, Liang Ma, Yankai Jia, Thomas M. Hyde, Joel E. Kleinman, Daniel R. Weinberger, View ORCID ProfileAndrew E Jaffe
doi: https://doi.org/10.1101/428391
Amanda J. Price
Lieber Institute for Brain Development
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Leonardo Collado-Torres
Lieber Institute for Brain Development
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  • ORCID record for Leonardo Collado-Torres
Nikolay A. Ivanov
Lieber Institute for Brain Development
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Wei Xia
Lieber Institute for Brain Development
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Emily E. Burke
Lieber Institute for Brain Development
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Joo Heon Shin
Lieber Institute for Brain Development
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Ran Tao
Lieber Institute for Brain Development
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Liang Ma
Lieber Institute for Brain Development
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Yankai Jia
Lieber Institute for Brain Development
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Thomas M. Hyde
Lieber Institute for Brain Development
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Joel E. Kleinman
Lieber Institute for Brain Development
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Daniel R. Weinberger
Lieber Institute for Brain Development
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Andrew E Jaffe
Lieber Institute for Brain Development
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  • ORCID record for Andrew E Jaffe
  • For correspondence: andrew.jaffe@libd.org
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Abstract

We characterized the landscape of DNA methylation (DNAm) across the first two decades of human neocortical development in neurons and glia using whole-genome bisulfite sequencing. We show that the rate of DNAm changes more dramatically during the first five years of postnatal life than during the entire remaining period. We further refined global patterns of increasingly divergent neuronal CpG and CpH methylation (mCpG and mCpH) into six unique developmental trajectories, within which neighboring mC levels - independent of sequence context - were highly correlated, unlike across the genome, where mCpG levels were correlated but mCpH levels were not. We then integrated paired RNA-seq data and identified direct regulation of hundreds of transcripts and their splicing events exclusively by mCpH, independent of mCpG levels, across this period of human cortical development. In addition to expanding the relationship between mCpH and gene expression, these splicing-associated cytosines and developmentally dynamic DNAm regions were associated with neuropsychiatric disease risk sequence, providing insight into the cell type and timing of dynamic epigenomic remodeling in known disease risk genes and loci.

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Posted September 29, 2018.
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Divergent neuronal DNA methylation patterns across human cortical development: Critical periods and a unique role of CpH methylation
Amanda J. Price, Leonardo Collado-Torres, Nikolay A. Ivanov, Wei Xia, Emily E. Burke, Joo Heon Shin, Ran Tao, Liang Ma, Yankai Jia, Thomas M. Hyde, Joel E. Kleinman, Daniel R. Weinberger, Andrew E Jaffe
bioRxiv 428391; doi: https://doi.org/10.1101/428391
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Divergent neuronal DNA methylation patterns across human cortical development: Critical periods and a unique role of CpH methylation
Amanda J. Price, Leonardo Collado-Torres, Nikolay A. Ivanov, Wei Xia, Emily E. Burke, Joo Heon Shin, Ran Tao, Liang Ma, Yankai Jia, Thomas M. Hyde, Joel E. Kleinman, Daniel R. Weinberger, Andrew E Jaffe
bioRxiv 428391; doi: https://doi.org/10.1101/428391

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