{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T20:40:50Z","timestamp":1772829650085,"version":"3.50.1"},"reference-count":77,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2021,4,28]],"date-time":"2021-04-28T00:00:00Z","timestamp":1619568000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001505","name":"Health Research Council of New Zealand","doi-asserted-by":"publisher","award":["HRC 18\/144"],"award-info":[{"award-number":["HRC 18\/144"]}],"id":[{"id":"10.13039\/501100001505","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cancers"],"abstract":"<jats:p>DNA methylation is a heritable epigenetic mark that is fundamental to mammalian development. Aberrant DNA methylation is an epigenetic hallmark of cancer cells. Cell lines are a critical in vitro model and very widely used to unravel mechanisms of cancer cell biology. However, limited data are available to assess whether DNA methylation patterns in tissues are retained when cell lines are established. Here, we provide the first genome-scale sequencing-based methylation map of metastatic melanoma tumour tissues and their derivative cell lines. We show that DNA methylation profiles are globally conserved in vitro compared to the tumour tissue of origin. However, we identify sites that are consistently hypermethylated in cell lines compared to their tumour tissue of origin. The genes associated with these common differentially methylated regions are involved in cell metabolism, cell cycle and apoptosis and are also strongly enriched for the H3K27me3 histone mark and PRC2 complex-related genes. Our data indicate that although global methylation patterns are similar between tissues and cell lines, there are site-specific epigenomic differences that could potentially impact gene expression. Our work provides a valuable resource for identifying false positives due to cell culture and for better interpretation of cancer epigenetics studies in the future.<\/jats:p>","DOI":"10.3390\/cancers13092123","type":"journal-article","created":{"date-parts":[[2021,4,28]],"date-time":"2021-04-28T10:41:58Z","timestamp":1619606518000},"page":"2123","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Comparison of Global DNA Methylation Patterns in Human Melanoma Tissues and Their Derivative Cell Lines"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9615-5896","authenticated-orcid":false,"given":"Euan J.","family":"Rodger","sequence":"first","affiliation":[{"name":"Department of Pathology, Otago Medical School\u2014Dunedin Campus, University of Otago, Dunedin 9054, New Zealand"},{"name":"Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Suzan N.","family":"Almomani","sequence":"additional","affiliation":[{"name":"Department of Pathology, Otago Medical School\u2014Dunedin Campus, University of Otago, Dunedin 9054, New Zealand"},{"name":"Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jackie L.","family":"Ludgate","sequence":"additional","affiliation":[{"name":"Department of Pathology, Otago Medical School\u2014Dunedin Campus, University of Otago, Dunedin 9054, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2145-3493","authenticated-orcid":false,"given":"Peter A.","family":"Stockwell","sequence":"additional","affiliation":[{"name":"Department of Pathology, Otago Medical School\u2014Dunedin Campus, University of Otago, Dunedin 9054, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bruce C.","family":"Baguley","sequence":"additional","affiliation":[{"name":"Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6824-8761","authenticated-orcid":false,"given":"Michael R.","family":"Eccles","sequence":"additional","affiliation":[{"name":"Department of Pathology, Otago Medical School\u2014Dunedin Campus, University of Otago, Dunedin 9054, New Zealand"},{"name":"Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7276-2248","authenticated-orcid":false,"given":"Aniruddha","family":"Chatterjee","sequence":"additional","affiliation":[{"name":"Department of Pathology, Otago Medical School\u2014Dunedin Campus, University of Otago, Dunedin 9054, New Zealand"},{"name":"Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1089","DOI":"10.1126\/science.1063443","article-title":"Epigenetic reprogramming in mammalian development","volume":"293","author":"Reik","year":"2001","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"R47","DOI":"10.1093\/hmg\/ddi114","article-title":"Epigenetic reprogramming in mammals","volume":"14","author":"Morgan","year":"2005","journal-title":"Hum. 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