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Related Experiment Videos

Methylation sequencing from limiting DNA: embryonic, fixed, and microdissected cells.

Douglas S Millar1, Peter M Warnecke, John R Melki

  • 1Kanematsu Laboratories, Sydney Cancer Centre, Royal Prince Alfred Hospital, Missenden Road, Camperdown, New South Wales 2050, Australia.

Methods (San Diego, Calif.)
|July 4, 2002
PubMed
Summary

This study presents modified bisulfite sequencing methods to analyze DNA methylation in challenging samples like embryos and degraded tissues. These techniques enable DNA methylation analysis from limited or compromised cellular material.

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Area of Science:

  • Epigenetics
  • Molecular Biology
  • Genomics

Background:

  • Determining DNA methylation is crucial for understanding gene regulation.
  • Standard DNA methylation analysis methods require substantial amounts of high-quality DNA.
  • Limited DNA availability from sources like embryos or degraded tissues hinders epigenetic studies.

Purpose of the Study:

  • To develop and present modified bisulfite sequencing protocols for analyzing DNA methylation in samples with limited or degraded DNA.
  • To adapt existing DNA preparation and bisulfite treatment methods for challenging sample types.
  • To address the experimental considerations specific to low-input and degraded DNA samples.

Main Methods:

  • Modification of standard DNA preparation protocols.

Related Experiment Videos

  • Adaptation of bisulfite treatment for sensitive samples.
  • Application of methods to embryos, fixed tissue sections, and laser capture microdissected samples.

    • Main Results:

    • Successful generation of DNA methylation sequence data from limited cell numbers.
    • Demonstration of effective bisulfite treatment on embryos and fixed tissues.
    • Identification of key experimental considerations for low-input DNA epigenetics.

    Conclusions:

    • Modified bisulfite sequencing protocols enable DNA methylation analysis in challenging samples.
    • These methods expand the scope of epigenetic research to include previously inaccessible sample types.
    • The study provides a valuable resource for researchers working with limited or degraded DNA samples.