國家衛生研究院 NHRI:Item 3990099045/10579
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/10579


    Title: Chronic treatment with cisplatin induces chemoresistance through the TIP60-mediated Fanconi anemia and homologous recombination repair pathways
    Authors: Su, WP;Ho, YC;Wu, CK;Hsu, SH;Shiu, JL;Huang, JC;Chang, SB;Chiu, WT;Hung, JJ;Liu, TL;Wu, WS;Wu, PY;Su, WC;Chang, JY;Liaw, H
    Contributors: National Institute of Cancer Research
    Abstract: The Fanconi anemia pathway in coordination with homologous recombination is essential to repair interstrand crosslinks (ICLs) caused by cisplatin. TIP60 belongs to the MYST family of acetyltransferases and is involved in DNA repair and regulation of gene transcription. Although the physical interaction between the TIP60 and FANCD2 proteins has been identified that is critical for ICL repair, it is still elusive whether TIP60 regulates the expression of FA and HR genes. In this study, we found that the chemoresistant nasopharyngeal carcinoma cells, derived from chronic treatment of cisplatin, show elevated expression of TIP60. Furthermore, TIP60 binds to the promoters of FANCD2 and BRCA1 by using the chromatin immunoprecipitation experiments and promote the expression of FANCD2 and BRCA1. Importantly, the depletion of TIP60 significantly reduces sister chromatid exchange, a measurement of HR efficiency. The similar results were also shown in the FNACD2-, and BRCA1-deficient cells. Additionally, these TIP60-deficient cells encounter more frequent stalled forks, as well as more DNA double-strand breaks resulting from the collapse of stalled forks. Taken together, our results suggest that TIP60 promotes the expression of FA and HR genes that are important for ICL repair and the chemoresistant phenotype under chronic treatment with cisplatin.
    Date: 2017-06-20
    Relation: Scientific Reports. 2017 Jun 20;7:Article number 3879.
    Link to: http://dx.doi.org/10.1038/s41598-017-04223-5
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=2045-2322&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000403643900032
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85021088113
    Appears in Collections:[Jang-Yang Chang] Periodical Articles

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