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Transcriptomic signature of hepatocellular carcinoma and intrahepatic cholangiocarcinoma derived from oncogenically transformed murine hepatocytes after stable knock-down of Tbx3 or Prdm5

ABSTRACT: Transcriptomic signature of hepatocellular carcinoma and intrahepatic cholangiocarcinoma derived from oncogenically transformed murine hepatocytes after stable knock-down of Tbx3 or Prdm5

PROVIDER: PRJNA448525 | ENA |

REPOSITORIES: ENA

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Transcriptomic signature of hepatocellular carcinoma and intrahepatic cholangiocarcinoma derived from oncogenically transformed murine hepatocytes after stable knock-down of Tbx3 or Prdm5

Project description:Primary liver cancer represents a major health problem. It comprises hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (ICC), which differ markedly with regards to their morphology, metastatic potential and therapy response. Yet, molecular actors and tissue context that commit transformed hepatic cells towards HCC or ICC are largely unknown. Here, we report that the hepatic microenvironment epigenetically shapes lineage commitment in mosaic mouse models of liver tumourigenesis. While a necroptosis associated hepatic cytokine microenvironment determines ICC outgrowth from oncogenically transformed hepatocytes, hepatocytes harbouring identical oncogenic drivers give rise to HCC if surrounded by apoptotic hepatocytes. Epigenome and transcriptome profiling of murine HCC and ICC singled out Tbx3 and Prdm5 as major microenvironment-dependent and epigenetically regulated lineage commitment factors, a function conserved in humans. Together, our study provides unprecedented insights into lineage commitment in liver tumourigenesis and explains molecularly why common liver damaging risk factors can either lead to HCC or ICC.

2018-06-29 | GSE112616 | GEO

Transcriptomic signature of hepatocellular carcinoma and intrahepatic cholangiocarcinoma derived from oncogenically transformed murine hepatocytes

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Transcriptomic signature of hepatocellular carcinoma and intrahepatic cholangiocarcinoma derived from oncogenically transformed murine hepatocytes

Project description:Transcriptomic signature of hepatocellular carcinoma and intrahepatic cholangiocarcinoma derived from oncogenically transformed murine hepatocytes

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Transcriptomic and epigenetic signatures of hepatocellular carcinoma and intrahepatic cholangiocarcinoma derived from oncogenically transformed murine hepatocytes

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Transcriptomic and epigenetic signatures of hepatocellular carcinoma and intrahepatic cholangiocarcinoma derived from oncogenically transformed murine hepatocytes

Project description:This SuperSeries is composed of the SubSeries listed below.

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Single-cell gene expression profiling of oncogenically transformed small intestinal organoids upon treatment with TGF-β1

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TGFβ1 promotes collective invasion of oncogenically transformed intestinal organoids by inducing partial epithelial-mesenchymal transition independently of Snail1 and Zeb1

Project description:Cancer cells simultaneously featuring epithelial and mesenchymal traits appear particularly competent to invade and metastasize. However, genetic prerequisites and signaling pathways promoting such partial epithelial-to-mesenchymal transitions (EMT) remain obscure. Here we report that murine intestinal organoids with hyperactive Wnt and MAPK signaling, and mutant Trp53 are purely epithelial and non-invasive in vitro, but initiate a collective invasion program when treated with TGFβ1. Invasive organoids reciprocally interact with the extracellular matrix (ECM), and autonomously deposit and remodel components thereof. Although cells at the organoid/ECM interface shed certain epithelial characteristics, invasive organoids largely maintain epithelial gene expression while concomitantly upregulating a mesenchymal program. TGFβ1-induced phenotypic changes involve canonical, Smad4-dependent signaling, yet, are unimpeded by knockout of Snai1 and Zeb1 - otherwise key regulators of epithelial-to-mesenchymal transitions. The finding of TGFβ1-inducible, Snail1/Zeb1-independent collective invasion of oncogenically transformed intestinal organoids provides novel mechanistic insights and broadens the spectrum of context-dependent manifestations of partial EMT.

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