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HGF-mediated elevation of ETV1 facilitates hepatocellular carcinoma metastasis through upregulating PTK2 and c-MET

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单位: [1]Huazhong Univ Sci & Technol,Hubei Key Lab Hepatopancreato Biliary Dis,Dept Gastroenterol,Tongji Hosp,Tongji Med Coll,Inst Liver & Gastroin,Wuhan 430030,Hubei,Peoples R China [2]Huazhong Univ Sci & Technol,Tongji Med Coll,Hubei Key Lab HepatoPancreato Biliary Dis,Hepat Surg Ctr,Tongji Hosp,Wuhan 430030,Hubei,Peoples R China [3]Minist Educ, Key Lab Organ Transplantat, Wuhan 430030, Hubei, Peoples R China [4]Minist Publ Hlth, Wuhan 430030, Hubei, Peoples R China
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关键词: E-twenty-six transformation-specific variant 1 Tyrosine protein kinase Met Protein tyrosine kinase 2 Defactinib Capmatinib

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Background Metastasis is a major determinant of death in patients with hepatocellular carcinoma (HCC). Dissecting key molecular mediators that promote this malignant feature may help yield novel therapeutic insights. Here, we investigated the role of E-twenty-six transformation-specific variant 1 (ETV1), a member of the E-twenty-six transformation-specific (ETS) family, in HCC metastasis. Methods The clinical significance of ETV1 and its target genes in two independent cohorts of HCC patients who underwent curative resection were assessed by Kaplan-Meier analysis and Multivariate Cox proportional hazards model. Luciferase reporter assay and chromatin immunoprecipitation assay were used to detect the transcriptional regulation of target gene promoters by ETV1. The effect of ETV1 on invasiveness and metastasis of HCC were detected by transwell assays and the orthotopically metastatic model. Results ETV1 expression was frequently elevated in human HCC specimens. Increased ETV1 expression was associated with the malignant biological characteristics and poor prognosis of HCC patients. ETV1 facilitated invasion and metastasis of HCC cells in vitro and in vivo. Mechanistically, ETV1 promoted HCC metastasis via upregulating metastasis-related genes, including protein tyrosine kinase 2 (PTK2) and MET. Down-regulated the expression of PTK2 or tyrosine protein kinase Met (c-MET) decreased ETV1-mediated HCC metastasis. Hepatocyte growth factor (HGF) upregulated ETV1 expression through activating c-MET-ERK1/2-ELK1 pathway. Notably, in two independent cohorts, patients with positive coexpression of ETV1/PTK2 or ETV1/c-MET had worse prognosis. Furthermore, the combination of PTK2 inhibitor defactinib and c-MET inhibitor capmatinib significantly suppressed HCC metastasis induced by ETV1. Conclusion This study uncovers functional and prognostic roles for ETV1 in HCC and exposes a positive feedback loop of HGF-ERK1/2-ETV1-c-MET. Targeting this pathway may provide a potential therapeutic intervention for ETV1-overexpressing HCC.

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大类 | 1 区 医学
小类 | 1 区 肿瘤学
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大类 | 1 区 医学
小类 | 1 区 肿瘤学
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Q1 ONCOLOGY
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Q1 ONCOLOGY

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第一作者单位: [1]Huazhong Univ Sci & Technol,Hubei Key Lab Hepatopancreato Biliary Dis,Dept Gastroenterol,Tongji Hosp,Tongji Med Coll,Inst Liver & Gastroin,Wuhan 430030,Hubei,Peoples R China
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通讯机构: [2]Huazhong Univ Sci & Technol,Tongji Med Coll,Hubei Key Lab HepatoPancreato Biliary Dis,Hepat Surg Ctr,Tongji Hosp,Wuhan 430030,Hubei,Peoples R China [3]Minist Educ, Key Lab Organ Transplantat, Wuhan 430030, Hubei, Peoples R China [4]Minist Publ Hlth, Wuhan 430030, Hubei, Peoples R China
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