國家衛生研究院 NHRI:Item 3990099045/8329
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    題名: Downregulation of BRCA1-BRCA2-containing complex subunit 3 sensitizes glioma cells to temozolomide
    作者: Chai, KM;Wang, CY;Liaw, HJ;Fang, KM;Yang, CS;Tzeng, SF
    貢獻者: Institute of Biomedical Engineering and Nanomedicine
    摘要: We previously found that BRCA1-BRCA2-containing complex subunit 3 (BRCC3) was highly expressed in tumorigenic rat glioma cells. However, the functional role of BRCC3 in human glioma cells remains to be characterized. This study indicated that the upregulation of BRCC3 expression was induced in two human malignant glioblastoma U251 and A172 cell lines following exposure to the alkylating agent, temozolomide (TMZ). Homologous recombination (HR)-dependent DNA repair-associated genes (i.e. BRCA1, BRCA2, RAD51 and FANCD2) were also increased in U251 and A172 cells after treatment with TMZ. BRCC3 gene knockdown through lentivirus-mediated gene knockdown approach not only significantly reduced the clonogenic and migratory abilities of U251 and A172 cells, but also enhanced their sensitization to TMZ. The increase in phosphorylated H2AX foci (gammaH2AX) formation, an indicator of DNA damage, persisted in TMZ-treated glioma cells with stable knockdown BRCC3 expression, suggesting that BRCC3 gene deficiency is associated with DNA repair impairment. In summary, we demonstrate that by inducing DNA repair, BRCC3 renders glioma cells resistant to TMZ. The findings point to BRCC3 as a potential target for treatment of alkylating drug-resistant glioma.
    日期: 2014-11-15
    關聯: Oncotarget. 2014 Nov 15;5(21):10901-10915.
    Link to: http://dx.doi.org/10.18632/oncotarget.2543
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000348036900052
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84916912447
    顯示於類別:[楊重熙] 期刊論文

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