Ptpn11/Shp2 acts as a tumor suppressor in hepatocellular carcinogenesis.
Ptpn11/Shp2 acts as a tumor suppressor in hepatocellular carcinogenesis.
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DOI:
10.1016/j.ccr.2011.03.023
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发表时间:
2011-05-17
期刊:
影响因子:
50.3
通讯作者:
Feng GS
中科院分区:
文献类型:
--
作者:
Bard-Chapeau EA;Li S;Ding J;Zhang SS;Zhu HH;Princen F;Fang DD;Han T;Bailly-Maitre B;Poli V;Varki NM;Wang H;Feng GS
The human gene PTPN11, which encodes the tyrosine phosphatase Shp2, may act as a proto-oncogene, as dominantly activating mutations have been detected in several types of leukemia. Herein we report a tumor suppressor function of Shp2. Hepatocyte-specific deletion of Shp2 promotes inflammatory signaling through the Stat3 pathway and hepatic inflammation/necrosis, resulting in regenerative hyperplasia and development of tumors in aged mice. Furthermore, Shp2 ablation dramatically enhanced diethylenenitrite (DEN)-induced hepatocellular carcinoma (HCC) development, which was abolished by concurrent deletion of Shp2 and Stat3 in hepatocytes. Decreased Shp2 expression was detected in a sub-fraction of human HCC specimens. Thus, in contrast to the leukemogenic effect of dominant active mutants, PTPN11/Shp2 has a tumor suppressor function in liver.
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