DNA methylation imprints on the IG-DMR of the Dlk1-Gtl2 domain in mouse male germline

Hitoshi Hiura; Junichi Komiyama; Motomu Shirai; Yayoi Obata; Hidehiko Ogawa; Tomohiro Kono

doi:10.1016/j.febslet.2007.02.034

DNA methylation imprints on the IG-DMR of the Dlk1-Gtl2 domain in mouse male germline

Hitoshi Hiura, Junichi Komiyama, Motomu Shirai, Yayoi Obata, Hidehiko Ogawa, Tomohiro Kono

Medicine

Research output: Contribution to journal › Article

30 Citations (Scopus)

Abstract

Mouse genomes show a large cluster of imprinted genes at the Dlk1-Gtl2 domain in the distal region of chromosome 12. An intergenic-differentially methylated region (IG-DMR) located between Dlk1 and Gtl2 is specifically methylated in the male germline; IG-DMR regulates the parental allele-specific expression of imprinted genes. Here, we show the resetting of IG-DMR methylation marks during male germ-cell differentiation. For parental allele-specific methylation analysis, polymorphisms were detected in a 2.6-kb IG-DMR in three mouse strains. Bisulfite methylation analysis showed erasure of the marks by E14 and re-establishment before birth. The IG-DMR methylation status was maintained in spermatogonia and spermatocytes of mature testes. The IG-DMR methylation status established before birth is thus maintained throughout the lifetime in the male germline.

Original language	English
Pages (from-to)	1255-1260
Number of pages	6
Journal	FEBS Letters
Volume	581
Issue number	7
DOIs	https://doi.org/10.1016/j.febslet.2007.02.034
Publication status	Published - 2007 Apr 3

Keywords

DMR
Genomic imprinting
Germ cells
Methylation
Mouse

ASJC Scopus subject areas

Biophysics
Structural Biology
Biochemistry
Molecular Biology
Genetics
Cell Biology

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title = "DNA methylation imprints on the IG-DMR of the Dlk1-Gtl2 domain in mouse male germline",

abstract = "Mouse genomes show a large cluster of imprinted genes at the Dlk1-Gtl2 domain in the distal region of chromosome 12. An intergenic-differentially methylated region (IG-DMR) located between Dlk1 and Gtl2 is specifically methylated in the male germline; IG-DMR regulates the parental allele-specific expression of imprinted genes. Here, we show the resetting of IG-DMR methylation marks during male germ-cell differentiation. For parental allele-specific methylation analysis, polymorphisms were detected in a 2.6-kb IG-DMR in three mouse strains. Bisulfite methylation analysis showed erasure of the marks by E14 and re-establishment before birth. The IG-DMR methylation status was maintained in spermatogonia and spermatocytes of mature testes. The IG-DMR methylation status established before birth is thus maintained throughout the lifetime in the male germline.",

keywords = "DMR, Genomic imprinting, Germ cells, Methylation, Mouse",

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AU - Hiura, Hitoshi

AU - Komiyama, Junichi

AU - Shirai, Motomu

AU - Obata, Yayoi

AU - Ogawa, Hidehiko

AU - Kono, Tomohiro

PY - 2007/4/3

Y1 - 2007/4/3

N2 - Mouse genomes show a large cluster of imprinted genes at the Dlk1-Gtl2 domain in the distal region of chromosome 12. An intergenic-differentially methylated region (IG-DMR) located between Dlk1 and Gtl2 is specifically methylated in the male germline; IG-DMR regulates the parental allele-specific expression of imprinted genes. Here, we show the resetting of IG-DMR methylation marks during male germ-cell differentiation. For parental allele-specific methylation analysis, polymorphisms were detected in a 2.6-kb IG-DMR in three mouse strains. Bisulfite methylation analysis showed erasure of the marks by E14 and re-establishment before birth. The IG-DMR methylation status was maintained in spermatogonia and spermatocytes of mature testes. The IG-DMR methylation status established before birth is thus maintained throughout the lifetime in the male germline.

AB - Mouse genomes show a large cluster of imprinted genes at the Dlk1-Gtl2 domain in the distal region of chromosome 12. An intergenic-differentially methylated region (IG-DMR) located between Dlk1 and Gtl2 is specifically methylated in the male germline; IG-DMR regulates the parental allele-specific expression of imprinted genes. Here, we show the resetting of IG-DMR methylation marks during male germ-cell differentiation. For parental allele-specific methylation analysis, polymorphisms were detected in a 2.6-kb IG-DMR in three mouse strains. Bisulfite methylation analysis showed erasure of the marks by E14 and re-establishment before birth. The IG-DMR methylation status was maintained in spermatogonia and spermatocytes of mature testes. The IG-DMR methylation status established before birth is thus maintained throughout the lifetime in the male germline.

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KW - Germ cells

KW - Methylation

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