Dataset Information


ADAMTSL5 is an epigenetically activated oncogene conferring tumorigenic properties in hepatocellular carcinoma

ABSTRACT: The remarkable molecular heterogeneity in hepatocellular carcinoma (HCC) continues to challenge development of effective treatments and biomarkers. Here we report that the gene encoding a secreted glycoprotein, ADAMTSL5, is overexpressed and displays hypermethylated CpG islands in its gene body region in a clinically relevant mouse genetic model of HCC as well as in a significant proportion of human HCC patients. Immunohistological analysis of human HCCs revealed strong ADAMTSL5 immunostaining in tumour cells and histiocytes, in contrast to normal liver. Functional targeting of ADAMTSL5 in oncogenesis using shRNA interfered with tumorigenic properties of HCC cells both in vitro and in vivo. Furthermore, ADAMTSL5 overexpression conferred tumorigenic capability to genetically sensitized, non-transformed hepatocytes in nude mice. Mechanistically, ADAMTSL5 abrogation led to reduction of several oncogenic inputs, including the receptor tyrosine kinases MET, EGFR, PDGFRβ, IGF1Rβ, and FGFR4, suggesting it as a master regulator of HCC tumorigenicity when overexpressed.


ORGANISM(S): Mus musculus  

TISSUE(S): Liver

DISEASE(S): Not Available


LAB HEAD: Audebert Stephane

PROVIDER: PXD016634 | Pride | 2020-11-17


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<h4>Background & aims</h4>The tumour microenvironment shapes tumour growth through cellular communications that include both direct interactions and secreted factors. The aim of this study was to characterize the impact of the secreted glycoprotein ADAMTSL5, whose role in cancer has not been previously investigated, on hepatocellular carcinoma (HCC).<h4>Methods</h4>ADAMTSL5 methylation status was evaluated through bisulfite sequencing, and publicly available data analysis. ADAMTSL5 RNA and prote  ...[more]

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