Transmission of modified nucleosomes from the mouse male germline to the zygote and subsequent remodeling of paternal chromatin.

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Publication year
2006Source
Developmental Biology, 298, 2, (2006), pp. 458-469ISSN
Publication type
Article / Letter to editor

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Organization
Gynaecology
Nephrology
Journal title
Developmental Biology
Volume
vol. 298
Issue
iss. 2
Page start
p. 458
Page end
p. 469
Subject
EBP 2: Effective Hospital Care; N4i 4: Auto-immunity, transplantation and immunotherapy; NCEBP 12: Human Reproduction; NCMLS 3: Tissue engineering and pathology; UMCN 5.2: Endocrinology and reproduction; UMCN 5.4: Renal disordersAbstract
Rapidly after gamete fusion, the sperm nucleus loses its specific chromatin conformation and the DNA is repopulated with maternally derived nucleosomes. We evaluated the nature of paternally derived nucleosomes and the dynamics of sperm chromatin remodeling in the zygote directly after gamete fusion. We observed histone H4 acetylated at K8 or K12 already prior to full decondensation of the sperm nucleus, suggesting that these marks are transmitted by the spermatozoon. Tracking down the origin of H4K8ac and H4K12ac during spermiogenesis revealed the retention of nucleosomes with these modifications in the chromocenter of elongating spermatids. We show that sperm constitutive heterochromatin is enriched for nucleosomes carrying specific histone modifications which are transmitted to the zygote. Our results suggest an epigenetic mechanism for inheritance of chromosomal architecture. Furthermore, up to pronucleus formation, histone acetylation and phosphorylation build up in a cascade-like fashion in the paternal chromatin. After formation of the pronucleus, a subset of these marks is removed from the heterochromatin, which suggests a reestablishment of the euchromatin-heterochromatin partition.
This item appears in the following Collection(s)
- Academic publications [202802]
- Electronic publications [100870]
- Faculty of Medical Sciences [80020]
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