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Stability of global methylation profiles of whole blood and extracted DNA under different storage durations and conditions

  • Yingchuan Li
  • , Xiaoqing Pan
  • , Michelle L. Roberts
  • , Pengyuan Liu
  • , Theodore A. Kotchen
  • , Allen W. Cowley
  • , David L. Mattson
  • , Yong Liu
  • , Mingyu Liang
  • , Srividya Kidambi

Research output: Contribution to journalArticlepeer-review

Abstract

Aim: To test whether DNA samples stored for a prolonged period (20 years) under various storage conditions could be used for comparative methylation studies using reduced representation bisulfite sequencing. Patients & methods: Five groups of human blood DNA samples (n = 5-6/group) were compared. The groupings were based on the anticoagulant used and storage temperature and duration. Results: Methylation profiles of defined genomic regions in the DNA or blood samples archived for 20 years were similar across all storage temperatures, including 4°C. The level of intersample similarity in archived samples was not significantly different than that in recently collected samples. Conclusion: Archived samples, including DNA stored at 4°C for 20 years, are suitable for comparative studies of DNA methylation.

Original languageEnglish (US)
Pages (from-to)797-811
Number of pages15
JournalEpigenomics
Volume10
Issue number6
DOIs
StatePublished - Jun 2018
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • methylation profiles
  • stability
  • storage conditions

ASJC Scopus subject areas

  • Genetics
  • Cancer Research

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