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- W2045878350 abstract "Background During fertilization, pronuclear envelope breakdown (PNEB) is followed by the mingling of male and female genomes. Dynamic chromatin and protein rearrangements require posttranslational modification (PTM) for the postfertilization development. Methodology/Principal Findings Inhibition of poly(ADP-ribose) polymerase activity (PARylation) by either PJ-34 or 5-AIQ resulted in developmental arrest of fertilized embryos at the PNEB. PARylation inhibition affects spindle bundle formation and phosphorylation of Erk molecules of metaphase II (MII) unfertilized oocytes. We found a frequent appearance of multiple pronuclei (PN) in the PARylation-inhibited embryos, suggesting defective polymerization of tubulins. Attenuated phosphorylation of lamin A/C by PARylation was detected in the PARylation-inhibited embryos at PNEB. This was associated with sustained localization of heterodomain protein 1 (HP1) at the PN of the one-cell embryos arrested by PARylation inhibition. Conclusions/Significance Our findings indicate that PARylation is required for pronuclear fusion during postfertilization processes. These data further suggest that PARylation regulates protein dynamics essential for the beginning of mouse zygotic development. PARylation and its involving signal-pathways may represent potential targets as contraceptives." @default.
- W2045878350 created "2016-06-24" @default.
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- W2045878350 date "2010-09-02" @default.
- W2045878350 modified "2023-10-14" @default.
- W2045878350 title "PolyADP-Ribosylation Is Required for Pronuclear Fusion during Postfertilization in Mice" @default.
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- W2045878350 doi "https://doi.org/10.1371/journal.pone.0012526" @default.
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