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[Sequential cellular and molecular changes during hepatocarcinogenesis]

P Bannasch1

  • 1Abteilung für Cytopathologie, Deutsches Krebsforschungszentrum, Heidelberg.

Verhandlungen Der Deutschen Gesellschaft Fur Pathologie
|January 1, 1995
PubMed
Summary
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Hepatocellular neoplasms develop from metabolic shifts, including glycogenosis and lipidosis, impacting cellular energy metabolism and signal transduction pathways. These changes are crucial in neoplastic cell conversion.

Area of Science:

  • Hepatology
  • Oncology
  • Cell Biology

Context:

  • Hepatocellular neoplasms arise from various liver cell types, including hepatocytes.
  • Neoplastic development involves preneoplastic cell populations and intermediate stages.
  • Chemicals, radiation, and viruses can induce hepatocellular neoplasms across species.

Purpose:

  • To investigate the metabolic and morphological alterations preceding hepatocellular neoplasms.
  • To elucidate the sequence of metabolic changes during hepatocarcinogenesis.
  • To explore the role of signal transduction and energy metabolism in neoplastic cell conversion.

Summary:

  • Hepatocellular neoplasms are preceded by focal metabolic and morphological changes, such as glycogenosis and lipidosis.
  • Early hepatocellular glycogenosis results from impaired glycogen breakdown, signal transduction, and glucose transport.

Related Experiment Videos

  • Progression to glycogen-poor hepatocellular carcinomas involves a metabolic shift towards glycolysis and the pentose phosphate pathway.
  • Alternative pathways involve oncocytes and amphophilic cells, particularly with non-genotoxic carcinogens.

    • Impact:

    • Findings reveal fundamental shifts in cellular energy metabolism during hepatocarcinogenesis.
    • Disturbances in signal transduction pathways are implicated in neoplastic cell conversion.
    • The study provides insights into the mechanisms underlying liver cancer development.