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Validation of the new EPIC DNA methylation microarray (900K EPIC v2) for high-throughput profiling of the human DNA methylome

Epigenetics, 2023, Vol.18 (1)

2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. 2023 ;ISSN: 1559-2294 ;EISSN: 1559-2308 ;DOI: 10.1080/15592294.2023.2185742

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  • Title:
    Validation of the new EPIC DNA methylation microarray (900K EPIC v2) for high-throughput profiling of the human DNA methylome
  • Author: Noguera-Castells, Aleix ; García-Prieto, Carlos A. ; Álvarez-Errico, Damiana ; Esteller, Manel
  • Subjects: CpG sites ; DNA methylation ; epigenetics ; Human ; microarray ; validation
  • Is Part Of: Epigenetics, 2023, Vol.18 (1)
  • Description: DNA methylation, one of the best characterized epigenetic marks in the human genome, plays a pivotal role in gene transcription regulation and other biological processes in humans. On top of that, the DNA methylome undergoes profound changes in cancer and other disorders. However, large-scale and population-based studies are limited by high costs and the need for considerable expertise in data analysis for whole-genome bisulphite-sequencing methodologies. Following the success of the EPIC DNA methylation microarray, the newly developed Infinium HumanMethylationEPIC version 2.0 (900K EPIC v2) is now available. This new array contains more than 900,000 CpG probes covering the human genome and excluding masked probes from the previous version. The 900K EPIC v2 microarray adds more than 200,000 probes covering extra DNA cis-regulatory regions such as enhancers, super-enhancers and CTCF binding regions. Herein, we have technically and biologically validated the new methylation array to show its high reproducibility and consistency among technical replicates and with DNA extracted from FFPE tissue. In addition, we have hybridized primary normal and tumoural tissues and cancer cell lines from different sources and tested the robustness of the 900K EPIC v2 microarray when analysing the different DNA methylation profiles. The validation highlights the improvements offered by the new array and demonstrates the versatility of this updated tool for characterizing the DNA methylome in human health and disease.
  • Publisher: Taylor & Francis
  • Language: English
  • Identifier: ISSN: 1559-2294
    EISSN: 1559-2308
    DOI: 10.1080/15592294.2023.2185742
  • Source: Taylor & Francis Open Access
    PubMed Central
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