Synergistic function of Kras mutation and HBx in initiation and progression of hepatocellular carcinoma in mice
Synergistic function of Kras mutation and HBx in initiation and progression of hepatocellular carcinoma in mice
复制标题
Kras突变和HBx在小鼠肝细胞癌发生和进展中的协同作用
DOI:
10.1038/onc.2013.468
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发表时间:
2014-10
期刊:
影响因子:
8
通讯作者:
Xiao Yang
中科院分区:
文献类型:
--
作者:
Xiao-Hong Tan;Wei-Ping Zhang;Yan Teng(共同通讯);Xiao Yang
Although the activation of Ras pathway is frequently observed in human hepatocellular carcinoma (HCC), the in vivo role of Ras activation in HCC initiation and progression is underdetermined. To test the consequence of Kras activation in hepatocyte, we generated a hepatocyte-specific Kras G12D transgenic mouse strain and observed spontaneous development of HCC in these mice. Remarkably, HBV X protein (HBx) expression significantly promotes the formation and malignant progression of Kras G12D-driven HCC as shown with the accelerated tumor onset, the increased tumor burden and the more poorly differentiated lesions. At the cellular level, concomitant expression of Kras G12D and HBx results in a robust increase in hepatocellular proliferation. We reveal that the Akt, MAPK, p53 and TGF-β pathways are deregulated in the Kras G12D-driven HCCs. Also, the dysregulation is more pronounced in the HCCs developed in Kras G12D and HBx double transgenic mice. In addition, the altered expressions of β-catenin, CD44 and E-cadherin are only observed in the Kras G12D and HBx double transgenic mice. These results demonstrate a crucial role of Ras activation in hepatocellular carcinogenesis and the functional synergy between Kras G12D and HBx in HCC initiation and progression. The novel genetic mouse models that closely recapitulate the histopathologic progression and molecular alterations of human HCC may potentially facilitate the future therapeutic studies.
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影响因子:
29.4
作者:
El-Serag HB
通讯作者:
El-Serag HB
影响因子:
13.5
作者:
Longato, Lisa;de la Monte, Suzanne;Kuzushita, Noriyoshi;Horimoto, Masayoshi;Rogers, Arlin B.;Slagle, Betty L.;Wands, Jack R.
通讯作者:
Wands, Jack R.
影响因子:
3.4
作者:
Yang, Sheau-Fang;Wang, Shen-Nien;Lee, King-Teh
通讯作者:
Lee, King-Teh
DOI:
10.1038/nrc3106
发表时间:
2011-10-13
期刊:
Nature reviews. Cancer
影响因子:
--
作者:
通讯作者:
--
影响因子:
3.4
作者:
Cui, F;Wang, YL;Yang, X
通讯作者:
Yang, X