GOLM1 Modulates EGFR/RTK Cell-Surface Recycling to Drive Hepatocellular Carcinoma Metastasis

Publication date: Available online 25 August 2016
Source:Cancer Cell
Author(s): Qing-Hai Ye, Wen-Wei Zhu, Ju-Bo Zhang, Yi Qin, Ming Lu, Guo-Ling Lin, Lei Guo, Bo Zhang, Zhen-Hai Lin, Stephanie Roessler, Marshonna Forgues, Hu-Liang Jia, Lu Lu, Xiao-Fei Zhang, Bao-Feng Lian, Lu Xie, Qiong-Zhu Dong, Zhao-You Tang, Xin Wei Wang, Lun-Xiu Qin
The mechanism of cancer metastasis remains poorly understood. Using gene profiling of hepatocellular carcinoma (HCC) tissues, we have identified GOLM1 as a leading gene relating to HCC metastasis. GOLM1 expression is correlated with early recurrence, metastasis, and poor survival of HCC patients. Both gain- and loss-of-function studies determine that GOLM1 acts as a key oncogene by promoting HCC growth and metastasis. It selectively interacts with epidermal growth factor receptor (EGFR) and serves as a specific cargo adaptor to assist EGFR/RTK anchoring on the trans-Golgi network (TGN) and recycling back to the plasma membrane, leading to prolonged activation of the downstream kinases. These findings reveal the functional role of GOLM1, a Golgi-related protein, in EGFR/RTK recycling and metastatic progression of HCC.

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Teaser

Ye et al. identify GOLM1 as a key promoter of hepatocellular carcinoma (HCC) metastasis and determine its critical roles in the recycling, spatial redistribution, and signaling kinetics of EGFR/RTKs. In human HCC, GOLM1 expression is correlated with early recurrence, metastasis, and poor patient survival.


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