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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/87122

    Title: PAX3 Loads onto Pericentromeric Heterochromatin During S Phase Through PARP1
    Contributors: 生物科技學系
    Keywords: PARP1;PAX3;S phase;pericentromeric heterochromatin
    Date: 2014-07
    Issue Date: 2014-12-16 17:02:23 (UTC+8)
    Abstract: BACKGROUND:
    Proper re-establishment of heterochromatin after each round of DNA replication is critical to the preservation of cell identity. Paired box 3 (PAX3), a transcription factor important in embryonic development, was found to mediate the formation of pericentromeric heterochromatin. However, how PAX3 recognizes the heterochromatic environment and re-establishes it after DNA replication remains unclear.
    Cell-cycle synchronization, fluorescence microscopic analyses, and co-immunoprecipitation were used to analyze the heterochromatic localization of PAX3 in HEK 293 cells and NIH 3T3 cells.
    We found that PAX3 binds pericentromeric heterochromatin during middle-to-late S phase. Loading of PAX3 onto pericentromeric heterochromatin requires poly(ADP-ribose) polymerase 1 (PARP1). Furthermore, loss of PAX3 or PARP1 delays cell-cycle progression through the S phase.
    Our results reveal how PAX3 recognizes and maintains pericentromeric heterochromatin at the S phase of the cell cycle.
    Copyright© 2014 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved.
    Relation: ANTICANCER RESEARCH;34(9):4717-22.
    Appears in Collections:[生物科技學系] 期刊論文

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