CREB5 promotes invasiveness and metastasis in colorectal cancer by directly activating MET

被引:54
作者
Wang, Shuyang [1 ,2 ,3 ]
Qiu, Junfeng [1 ,2 ,3 ]
Liu, Lei [1 ,2 ,3 ]
Su, Cailin [1 ,2 ,3 ]
Qi, Lu [1 ,2 ,3 ]
Huang, Chengmei [1 ,2 ,3 ]
Chen, Xiaoning [1 ,2 ,3 ]
Zhang, Yaxin [1 ,2 ,3 ]
Ye, Yaping [1 ,2 ,3 ]
Ding, Yanqing [1 ,2 ,3 ]
Liang, Li [1 ,2 ,3 ]
Liao, Wenting [1 ,2 ,3 ,4 ]
机构
[1] Southern Med Univ, Nanfang Hosp, Dept Pathol, Guangzhou 510515, Guangdong, Peoples R China
[2] Southern Med Univ, Sch Basic Med Sci, Dept Pathol, Guangzhou 510515, Peoples R China
[3] Guangdong Prov Key Lab Mol Tumor Pathol, Guangzhou, Guangdong, Peoples R China
[4] Sun Yat Sen Univ, Collaborat Innovat Ctr Canc Med, State Key Lab Oncol South China, Canc Ctr, Guangzhou, Peoples R China
基金
中国国家自然科学基金;
关键词
Colorectal cancer; CREB5; Invasion; Metastasis; MET; TRANSCRIPTION FACTORS; C-MET; RESISTANCE; PATHWAY; FAMILY; GROWTH;
D O I
10.1186/s13046-020-01673-0
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Background cAMP responsive element binding protein 5 (CREB5) is a transcriptional activator in eukaryotic cells that can regulate gene expression. Previously, we found that CREB5 was involved in the occurrence and development of colorectal cancer (CRC) using bioinformatics analysis. However, the biological roles and underlying regulatory mechanism of CREB5 in CRC remain unclear. Methods Real-time PCR, western blotting, and immunohistochemistry were used to examine CREB5 expression. In vitro experiments including migration assay, wound-healing assay, chicken chorioallantoic membrane assay, and human umbilical vein endothelial cells tube formation assay were used to investigate the effects of CREB5 on CRC cell migration and tumor angiogenesis ability. Additionally, an orthotopic implantation assay was performed in nude mice to confirm the effects of CREB5 in vivo. Furthermore, gene set enrichment analysis was performed to explore the potential mechanism of CREB5 in CRC. Results We found that CREB5 expression was highly upregulated in CRC. CREB5 overexpression was positively correlated with advanced WHO stages and TNM stages and shorter survival in CRC patients. Moreover, CREB5 overexpression promoted while CREB5 silencing reduced the invasiveness and metastatic capacity of CRC cells both in vitro and in vivo. Furthermore, CREB5 directly interacted with the MET promoter and activated the hepatocyte growth factor-MET signalling pathway. Importantly, inhibition of MET reduced the invasion and metastasis of CREB5-overexpressing CRC cells, suggesting that CREB5 promotes metastasis mainly through activation of MET signalling. Conclusion Our study demonstrates a crucial role for CREB5 in CRC metastasis by directly upregulating MET expression. CREB5 may be both a potential prognostic marker and a therapeutic target to effectively overcome metastasis in CRC.
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页数:11
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