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Title 

Gradual development of a genome-wide H3-K9 trimethylation pattern in paternally derived pig pronucleus

 

히스톤 H3-K9 trimethylation pattern의 pig zygote에서의 확립 과정 연구

Authors 

Young Sun JeongSeungeun YeoJung Sun ParkKyung Kwang LeeYong-Kook Kang

Publisher 

Wiley-Blackwell

Issue Date 

2007

Citation 

Developmental Dynamics, vol. 236, no. 6, pp. 1509-1516

Keywords 

active demethylationearly embryoepigenetic reprogrammingH3-K9 methylationpigDNAhistone H3cell maturationchromatincomplex formation

Abstract 

The cytoplasm of a mature oocyte contains many protein complexes that are programmed to restructure incoming sperm chromatins on fertilization. of the complicated biochemical events that these functional machineries control, the most impressive and important is epigenetic reprogramming. Despite its importance in epigenetic resetting, or "de-differentiation," of gamete genomes back to an incipient status, the mechanisms of epigenetic reprogramming do not seem to be conserved among mammals. Here, we report that, unlike in the mouse, the pig sperm-derived pronucleus is markedly trimethylated at lysine 9 of histone H3 (H3-m3K9), which might be associated with preservation of paternally derived cytosine methylation in pig zygotes. The male H3-m 3K9 pattern is gradually established during pronucleus development, and this process occurs independently of DNA replication. Considering these unique epigenetic features, the pig zygote is, we believe, suited to serve as another model of epigenetic reprogramming that is antithetical to the well-characterized mouse model.

ISSN 

1058-8388

Link 

http://dx.doi.org/10.1002/dvdy.21150

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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