Notch1 ablation radiosensitizes glioblastoma cells
Notch1 ablation radiosensitizes glioblastoma cells
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Notch1消融使胶质母细胞瘤细胞放射增敏
DOI:
10.18632/oncotarget.21409
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发表时间:
2017-09
期刊:
影响因子:
--
通讯作者:
Zhang MX
中科院分区:
文献类型:
--
作者:
Han Na;Hu Guangyuan;Shi Lei;Long Guoxian;Yang Lin;Xi Qingsong;Guo Qiuyun;Wang Jianhua;Dong Zhen;Zhang Mengxian;Zhang MX
Broad specific Notch1 inhibitors suppress glioblastoma multiforme (GBM) growth but have significant gastrointestinal toxicities. Here, we examined Notch1 expression in GBM tissue specimens and its correlation with the overall survival (OS) of GBM patients. Furthermore, using the CRISPR/Cas9 system, we investigated the effects of Notch1 downregulation on clonogenic growth and angiogenesis of GBM cells and xenografts. Immunohistochemistry showed positive Notch1 expression in 71% (49/69) of GBM tissues. Our multivariate Cox regression analysis further revealed that Notch1 expression was an independent adverse prognostic factor for OS. Notch1 downregulation suppressed the growth of GBM cells U87MG and U251. The mean duration to reach 6 x the starting volume was 18.3 days for xenografts with Notch1 downregulation and 13.4 days for the control xenografts. Immunofluorescent staining further disclosed that Notch1 downregulation markedly increased the number of γH2AX foci and radiosensitized GBM cells. Notch1 downregulation also impaired angiogenesis and attenuated VEGF and hypoxic response to irradiation in xenografts. In conclusion, Notch1 ablation inhibited GBM cell proliferation and neovascularization and radiosensitized GBM cells and xenografts, suggesting a pivotal role of Notch1 in tumor growth, angiogenesis, and radioresistance in GBM.
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影响因子:
158.5
作者:
Stupp, R;Mason, WP;Ryan, G
通讯作者:
Ryan, G
影响因子:
5.2
作者:
Wang, Jialiang;Wakeman, Timothy P.;Lathia, Justin D.;Hjelmeland, Anita B.;Wang, Xiao-Fan;White, Rebekah R.;Rich, Jeremy N.;Sullenger, Bruce A.
通讯作者:
Sullenger, Bruce A.
影响因子:
4.6
作者:
Kim BS;Seol HJ;Nam DH;Park CK;Kim IH;Kim TM;Kim JH;Cho YH;Yoon SM;Chang JH;Kang SG;Kim EH;Suh CO;Jung TY;Lee KH;Kim CY;Kim IA;Hong CK;Yoo H;Kim JH;Kang SH;Kang MK;Kim EY;Kim SH;Chung DS;Hwang SC;Song JH;Cho SJ;Lee SI;Lee YS;Ahn KJ;Kim SH;Lim DH;Gwak HS;Lee SH;Hong YK
通讯作者:
Hong YK
DOI:
10.1615/critreveukaryotgeneexpr.2015015601
发表时间:
2015
影响因子:
1.6
作者:
R. Kalkan
通讯作者:
R. Kalkan
影响因子:
64.8
作者:
van Es, JH;van Gijn, ME;Clevers, H
通讯作者:
Clevers, H