Deposition of acetylated histones by RNAP 2 promoter clearance may occur at onset of zygotic gene activation in preimplantation mouse embryou
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- TOKORO Mikiko
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University
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- SHIN Seung-Wook
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University
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- NISHIKAWA Satoshi
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University
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- LEE Hyang-Heun
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University
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- HATANAKA Yuki
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University
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- AMANO Tomoko
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University
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- MITANI Tasuku
- Institute of Advanced Technology, Kinki University
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- KATO Hiromi
- Institute of Advanced Technology, Kinki University
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- ANZAI Masayuki
- Institute of Advanced Technology, Kinki University
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- KISHIGAMI Satoshi
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University
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- SAEKI Kazuhiro
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University Institute of Advanced Technology, Kinki University
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- HOSOI Yoshihiko
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University Institute of Advanced Technology, Kinki University
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- IRITANI Akira
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University Institute of Advanced Technology, Kinki University
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- MATSUMOTO Kazuya
- Division of Biological Science, Graduate School of Biology-Oriented Science and Technology, Kinki University Institute of Advanced Technology, Kinki University
書誌事項
- タイトル別名
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- Deposition of Acetylated Histones by RNAP II Promoter Clearance May Occur at Onset of Zygotic Gene Activation in Preimplantation Mouse Embryos
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We investigated the contribution of phosphorylated RNA polymerase II (RNAP II) and dynamic epigenetic changes to the onset of minor zygotic gene activation (ZGA). Using immunofluorescence staining, we observed that the nuclear localization of RNAP II was initiated by 6 hours post insemination (hpi), whereas RNAP II phosphorylated at serine residue 5 of the carboxyl-terminal domain (CTD) was localized by 9 hpi, and then RNAP II phosphorylated at serine residue 2 of the CTD was localized in the nucleus of embryos by 12 hpi. In a transient gene expression assay using a plasmid reporter gene (pβ-actin/luciferase+/SV40) injected during 6-9 hpi into the male pronucleus, the luciferase+ gene was actively transcribed and translated by 13 and 15 hpi, respectively, indicating that a transcriptionally silent state persisted for at least 4 hours after injection. We found that the methylation status in the chicken β-actin promoter region of the plasmid reporter gene may not be associated with the transcriptionally silent state before minor ZGA. Exposure to trichostatin A did not induce premature expression of the silent reporter gene injected into 1-cell embryos containing histone deacetylase activity and did not affect the amount of luciferase produced per embryo. Acetylated histone H3 lysine 9/14 and acetylated histone H4 lysine 12 and 16 were enriched preferentially in the injected reporter gene at least until 13 hpi, which coincided with the transcriptionally active state. Taken together, these results suggest that deposition of selectively acetylated histones onto the chromatin of 1-cell embryos functions together with transcriptional elongation by RNAP II and that this sequential chromatin remodeling is involved in the molecular mechanism associated with the onset of minor ZGA in the preimplantation mouse embryo.<br>
収録刊行物
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- Journal of Reproduction and Development
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Journal of Reproduction and Development 56 (6), 607-615, 2010
公益社団法人 日本繁殖生物学会
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詳細情報 詳細情報について
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- CRID
- 1390282681311686272
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- NII論文ID
- 10027730167
- 130000305917
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- NII書誌ID
- AA10936678
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- COI
- 1:STN:280:DC%2BC3M7isVGnsg%3D%3D
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- ISSN
- 13484400
- 09168818
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- NDL書誌ID
- 10931171
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- PubMed
- 20710121
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可