Microsomal prostaglandin E synthase-1 promotes hepatocarcinogenesis through activation of a novel EGR1/β-catenin signaling axis.
Microsomal prostaglandin E synthase-1 promotes hepatocarcinogenesis through activation of a novel EGR1/β-catenin signaling axis.
复制标题
DOI:
10.1038/onc.2011.287
复制
发表时间:
2012-02-16
期刊:
影响因子:
8
通讯作者:
Wu, T.
中科院分区:
文献类型:
--
作者:
Lu, D.;Han, C.;Wu, T.
关键词:
Microsomal prostaglandin E synthase-1 (mPGES-1) is a key enzyme that couples with cyclooxygenase-2 (COX-2) for the production of PGE2. Although COX-2 is known to mediate the growth and progression of several human cancers including hepatocellular carcinoma (HCC), the role of mPGES-1 in hepatocarcinogenesis is not well established. This study provides novel evidence for a key role of mPGES-1 in HCC growth and progression. Forced overexpression of mPGES-1 in two HCC cell lines (Hep3B and Huh7) increased tumor cell growth, clonogenic formation, migration and invasion, whereas knockdown of mPGES-1 inhibited these parameters, in vitro. In a SCID mouse tumor xenograft model, mPGES-1 overexpressed cells formed palpable tumors at earlier time points and developed larger tumors when compared to the control (p<0.01); in contrast, mPGES-1 knockdown delayed tumor development and reduced tumor size (p<0.01). Mechanistically, mPGES-1-induced HCC cell proliferation, invasion and migration involve PGE2 production and activation of early growth response 1 (EGR1) and β-catenin. Specifically, mPGES-1-derived PGE2 induces the formation of EGR1-β-catenin complex, which interacts with TCF4/LEF1 transcription factors and activates the expression of β-catenin downstream genes. Our findings depict a novel crosstalk between mPGES-1/PGE2 and EGR1/β-catenin signaling that is critical for hepatocarcinogenesis.
登录
查看更多内容
影响因子:
4
作者:
Hoppler, Stefan;Kavanagh, Claire Louise
通讯作者:
Kavanagh, Claire Louise
DOI:
10.2217/fon.09.67
发表时间:
2009-09
期刊:
Future oncology (London, England)
影响因子:
--
作者:
Gitenay D;Baron VT
通讯作者:
Baron VT
DOI:
10.1073/pnas.96.13.7220
发表时间:
1999-06-22
影响因子:
11.1
作者:
Jakobsson, PJ;Thorén, S;Samuelsson, B
通讯作者:
Samuelsson, B
影响因子:
4.7
作者:
Dihlmann, S;Kloor, M;Doeberitz, MV
通讯作者:
Doeberitz, MV
影响因子:
4.8
作者:
Bijur, GN;Jope, RS
通讯作者:
Jope, RS