{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T12:02:38Z","timestamp":1779969758505,"version":"3.53.1"},"reference-count":96,"publisher":"Science Exploration Press","license":[{"start":{"date-parts":[[2025,12,18]],"date-time":"2025-12-18T00:00:00Z","timestamp":1766016000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ACRT"],"abstract":"<jats:p>Background: DNA methylation patterns are established during development and are propagated in a cell type specific manner, but these patterns may become aberrant during aging and cancer. Regions of alternating high and moderate to low levels of DNA methylation exist along all chromosomes in human cells. It is unclear how these distinct DNA methylation blocks are established. Most of the prior work in this area has been performed with mouse embryonic stem cells.\n\nMethods: Using whole genome bisulfite sequencing and chromatin-immunoprecipitation sequencing, we have profiled DNA methylation at single base resolution and various histone modifications in human bronchial epithelial cells.\n\nResults: We found that many regions of lower DNA methylation (&lt; 50%) are characterized by presence of the Polycomb repressive complex 2 (PRC2) mark, histone H3K27 trimethylation, but less so by the PRC1 mark histone H2AK119 monoubiquitylation. These same PRC2-marked regions also showed a depletion of histone H3K36 di- and tri-methylation.\n\nConclusion: Since H3K36me2 and H3K36me3 are recognized by the reader domains of the DNA methyltransferases DNMT3A and DNMT3B, and H3K36 methylation is a block to the PRC2 methyltransferases, these two types of crosstalk may explain the stable maintenance and antagonism between H3K27me3 and broad DNA methylation domains. However, methylated CpG islands are depleted of H3K36me2 and show a different relationship between DNA methylation and H3K36me2 deposition compared to non-CpG island regions. The data give insight into how DNA methylation patterns are established in human cells. We discuss these findings and their potential relevance for altered DNA methylation patterns seen in aging tissues and in cancer cells.<\/jats:p>","DOI":"10.70401\/acrt.2025.0007","type":"journal-article","created":{"date-parts":[[2025,12,18]],"date-time":"2025-12-18T03:21:03Z","timestamp":1766028063000},"update-policy":"https:\/\/doi.org\/10.70401\/science_exploration_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["DNA methylation landscapes in human cells and their chromatin determinants"],"prefix":"10.70401","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4660-2766","authenticated-orcid":false,"given":"Wei","family":"Cui","sequence":"first","affiliation":[{"name":"https:\/\/ror.org\/00wm07d60"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5534-7576","authenticated-orcid":false,"given":"Zhijun","family":"Huang","sequence":"additional","affiliation":[{"name":"https:\/\/ror.org\/00wm07d60"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5080-9604","authenticated-orcid":false,"given":"Gerd P.","family":"Pfeifer","sequence":"additional","affiliation":[{"name":"https:\/\/ror.org\/00wm07d60"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"51171","published-online":{"date-parts":[[2025,12,18]]},"reference":[{"key":"ref0","doi-asserted-by":"crossref","unstructured":"1. 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