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Updated: Feb 12, 2026

An Oncogenic Hepatocyte-Induced Orthotopic Mouse Model of Hepatocellular Cancer Arising in the Setting of Hepatic Inflammation and Fibrosis
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MYC inactivation uncovers pluripotent differentiation and tumour dormancy in hepatocellular cancer

Catherine M Shachaf1, Andrew M Kopelman, Constadina Arvanitis

  • 1Division of Medical Oncology, Department of Medicine, Stanford University, California 94305, USA.

Nature
|October 12, 2004
PubMed

Insights

Inactivating the MYC oncogene causes invasive liver cancers to regress by differentiating tumor cells into normal liver cells. Reactivating MYC restores cancer, revealing a dormant state in hepatocellular carcinoma treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Hepatocellular carcinoma (HCC) presents significant clinical treatment challenges due to its refractory nature.
  • The MYC oncogene plays a critical role in the development and progression of various cancers, including HCC.

Purpose of the Study:

  • To investigate the therapeutic potential of MYC oncogene inactivation in treating invasive liver cancers.
  • To elucidate the cellular and molecular mechanisms underlying tumor regression and dormancy following MYC inactivation.

Main Methods:

  • Inactivation of the MYC oncogene in a liver cancer model.
  • In vivo bioluminescence imaging to monitor tumor cell behavior.
  • Analysis of cell differentiation markers (alpha-fetoprotein, cytokeratin 8, carcinoembryonic antigen, cytokeratin 19).
  • Array comparative genomic hybridization (aCGH) to assess genomic stability and clonal origin.

Main Results:

  • MYC inactivation induced sustained regression of invasive liver cancers.
  • Tumor cells differentiated into hepatocytes and biliary cells, forming bile duct structures.
  • Differentiation was marked by altered expression of specific tumor and liver cell markers.
  • MYC-inactivated cells entered a dormant state, retaining their neoplastic potential.
  • MYC reactivation immediately restored neoplastic features, with cells being clonally derived from original tumor cells.

Conclusions:

  • Inactivation of the MYC oncogene is a viable strategy for inducing regression in hepatocellular carcinoma.
  • Oncogene inactivation can reverse tumorigenesis by promoting tumor cell differentiation and dormancy.
  • This approach highlights the potential to exploit the pluripotent capacity of tumor cells for cancer therapy, even in difficult-to-treat cancers.

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