Human Gene Set: KAPOSI_LIVER_CANCER_MET_UP


Standard name KAPOSI_LIVER_CANCER_MET_UP
Systematic name M5755
Brief description Selected up-regulated MET [GeneID=4233] target genes from a classifier of hepatocellular carcinoma (HCC) cases; associated with poor survival.
Full description or abstract Identification of specific gene expression signatures characteristic of oncogenic pathways is an important step toward molecular classification of human malignancies. Aberrant activation of the Met signaling pathway is frequently associated with tumor progression and metastasis. In this study, we defined the Met-dependent gene expression signature using global gene expression profiling of WT and Met-deficient primary mouse hepatocytes. Newly identified transcriptional targets of the Met pathway included genes involved in the regulation of oxidative stress responses as well as cell motility, cytoskeletal organization, and angiogenesis. To assess the importance of a Met-regulated gene expression signature, a comparative functional genomic approach was applied to 242 human hepatocellular carcinomas (HCCs) and 7 metastatic liver lesions. Cluster analysis revealed that a subset of human HCCs and all liver metastases shared the Met-induced expression signature. Furthermore, the presence of the Met signature showed significant correlation with increased vascular invasion rate and microvessel density as well as with decreased mean survival time of HCC patients. We conclude that the genetically defined gene expression signatures in combination with comparative functional genomics constitute an attractive paradigm for defining both the function of oncogenic pathways and the clinically relevant subgroups of human cancers.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 16710476   Authors: Kaposi-Novak P,Lee JS,Gòmez-Quiroz L,Coulouarn C,Factor VM,Thorgeirsson SS
Exact source Table 4
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Source species Homo sapiens
Contributed by Yujin Hoshida (Broad Institute)
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identifier namespace		 HUMAN_GENE_SYMBOL
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Version history 3.1: KAPOSI_LIVER_CANCER_POOR_SURVIVAL_UP

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