Identification of a therapeutic strategy targeting amplified FGF19 in liver cancer by Oncogenomic screening.

Identification of a therapeutic strategy targeting amplified FGF19 in liver cancer by Oncogenomic screening.
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DOI:
10.1016/j.ccr.2011.01.040
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发表时间:
2011-03-08
期刊:
影响因子:
50.3
通讯作者:
Powers S
Powers S
中科院分区:
医学1区
文献类型:
--
作者:
Sawey ET;Chanrion M;Cai C;Wu G;Zhang J;Zender L;Zhao A;Busuttil RW;Yee H;Stein L;French DM;Finn RS;Lowe SW;Powers S

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我们使用小鼠成肝细胞模型筛选了124个在人HCC中扩增的基因,并鉴定了18个促肿瘤基因,包括CCND1及其在11q13.3上的邻居,FGF19。尽管人们普遍认为CCND1是这种常见扩增子的主要驱动癌基因(HCC中的频率为15%),但在人HCC细胞中的正向转化试验和RNAi介导的抑制都证实了FGF19是HCC中同样重要的驱动基因。此外,携带11q13.3扩增子的HCC细胞的克隆生长和致瘤性通过RNAi介导的CCND1或FGF19敲低以及通过抗FGF19抗体选择性地抑制。这些结果表明,11q13.3扩增可能是最有可能对抗FGF19治疗有反应的患者的有效生物标志物。
We screened 124 genes that are amplified in human HCC using a mouse hepatoblast model and identified 18 tumor-promoting genes, including CCND1 and its neighbor on 11q13.3, FGF19. Although it is widely assumed that CCND1 is the main driving oncogene of this common amplicon (15% frequency in HCC), both forward-transformation assays and RNAi-mediated inhibition in human HCC cells established that FGF19 is an equally important driver gene in HCC. Furthermore, clonal growth and tumorigenicity of HCC cells harboring the 11q13.3 amplicon were selectively inhibited by RNAi-mediated knockdown of CCND1 or FGF19, as well as by an anti-FGF19 antibody. These results show that 11q13.3 amplification could be an effective biomarker for patients most likely to respond to anti-FGF19 therapy.
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