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Cited by 247

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

Global hypomethylation of the genome in XX embryonic stem cells

Open access
Zvetkova, Ilona, Apedaile, Anwyn, Ramsahoye, Bernard, Mermoud, Jacqueline E, Crompton, Lucy A, John, Rosalind, Feil, Robert, Brockdorff, Neil·2005·Nature Genetics

Abstract

Embryonic stem (ES) cells are important tools in the study of gene function and may also become important in cell therapy applications. Establishment of stable XX ES cell lines from mouse blastocysts is relatively problematic owing to frequent loss of one of the two X chromosomes. Here we show that DNA methylation is globally reduced in XX ES cell lines and that this is attributable to the presence of two active X chromosomes. Hypomethylation affects both repetitive and unique sequences, the latter including differentially methylated regions that regulate expression of parentally imprinted genes. Methylation of differentially methylated regions can be restored coincident with elimination of an X chromosome in early-passage parthenogenetic ES cells, suggesting that selection against loss of methylation may provide the basis for X-chromosome instability. Finally, we show that hypomethylation is associated with reduced levels of the de novo DNA methyltransferases Dnmt3a and Dnmt3b and that ectopic expression of these factors restores global methylation levels.

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Crossref · 10.1038/ng1663

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Metadata

Authors
Zvetkova, I., Apedaile, A., Ramsahoye, B., Mermoud, J. E., Crompton, L. A., John, R., Feil, R., & Brockdorff, N.
Venue
Nature Genetics
Published
2005-10-23
Volume
37
Issue
11
Pages
1274-1279
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2072820298
Cited by
247
References
2
FWCI
5.53
Type
journal article
Language
en
Open access
green

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