Whole-mount MeFISH: A novel technique for simultaneous visualization of specific DNA methylation and protein/RNA expression

Hirosuke Shiura, Akimitsu Okamoto, Hiroyuki Sasaki, Kuniya Abe

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    To understand the spatiotemporal changes in cellular status that occur during embryonic development, it is desirable to detect simultaneously the expression of genes, proteins, and epigenetic modifications in individual embryonic cells. A technique termed methylation-specific fluorescence in situ hybridization (MeFISH) was developed recently that can visualize the methylation status of specific DNA sequences in cells fixed on a glass slide. Here, we adapted this glass slide-based MeFISH to the study of intact embryos, and established a method called whole-mount MeFISH. This method can be applied to any DNA sequences in theory and, as a proof-of-concept experiment, we examined the DNA methylation status of satellite repeats in developing mouse primordial germ cells, in which global DNA demethylation is known to take place, and obtained a result that was consistent with previous findings, thus validating the MeFISH method. We also succeeded in combining whole-mount MeFISH with immunostaining or RNA fluorescence in situ hybridization (RNA-FISH) techniques by adopting steps to retain signals of RNA-FISH or immunostaining after harsh denaturation step of MeFISH. The combined methods enabled the simultaneous visualization of DNA methylation and protein or RNA expression at single-cell resolution without destroying embryonic and nuclear structures. This whole-mount MeFISH technique should facilitate the study of the dynamics of DNA methylation status during embryonic development with unprecedented resolution.

    Original languageEnglish
    Article numbere95750
    JournalPLoS One
    Volume9
    Issue number4
    DOIs
    Publication statusPublished - Apr 22 2014

    Fingerprint

    Methylation
    DNA methylation
    DNA Methylation
    fluorescence in situ hybridization
    Fluorescence In Situ Hybridization
    methylation
    Visualization
    Fluorescence
    RNA
    Proteins
    proteins
    DNA sequences
    methodology
    Embryonic Development
    Glass
    glass
    embryogenesis
    Embryonic Structures
    nucleotide sequences
    Denaturation

    All Science Journal Classification (ASJC) codes

    • Agricultural and Biological Sciences(all)
    • Biochemistry, Genetics and Molecular Biology(all)
    • Medicine(all)

    Cite this

    Whole-mount MeFISH : A novel technique for simultaneous visualization of specific DNA methylation and protein/RNA expression. / Shiura, Hirosuke; Okamoto, Akimitsu; Sasaki, Hiroyuki; Abe, Kuniya.

    In: PLoS One, Vol. 9, No. 4, e95750, 22.04.2014.

    Research output: Contribution to journalArticle

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