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Related Concept Videos

  • Biomedical And Clinical Sciences
  • Oncology And Carcinogenesis
  • Predictive And Prognostic Markers
  • Mechanistic And Prognostic Significance Of Aberrant Methylation In The Molecular Pathogenesis Of Human Hepatocellular Carcinoma.
  • Biomedical And Clinical Sciences
  • Oncology And Carcinogenesis
  • Predictive And Prognostic Markers
  • Mechanistic And Prognostic Significance Of Aberrant Methylation In The Molecular Pathogenesis Of Human Hepatocellular Carcinoma.

    • Related Experiment Videos

    Mechanistic and prognostic significance of aberrant methylation in the molecular pathogenesis of human hepatocellular carcinoma.

    Diego F Calvisi1, Sara Ladu, Alexis Gorden

    • 1Laboratory of Experimental Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland 20892-4262, USA.

    The Journal of Clinical Investigation
    |August 25, 2007

    View abstract on PubMed

    Summary
    This summary is machine-generated.

    Aberrant DNA methylation patterns are crucial in hepatocellular carcinoma (HCC) development. Targeting these epigenetic changes offers potential therapeutic and chemopreventive strategies for liver cancer.

    Related Experiment Videos

    Area of Science:

    • Oncology
    • Epigenetics
    • Molecular Biology

    Background:

    • Hepatocellular carcinoma (HCC) is a major global health concern, causing significant mortality.
    • Aberrant DNA methylation, including hypomethylation and hypermethylation, is a hallmark of various cancers, including HCC.

    Purpose of the Study:

    • To investigate the correlation between global DNA methylation patterns and HCC patient outcomes.
    • To identify specific epigenetically silenced genes in HCC that could serve as therapeutic targets.

    Main Methods:

    • Analysis of global DNA methylation levels in HCC.
    • Assessment of methylation status for 105 putative tumor suppressor genes.
    • Correlation analysis between methylation patterns, biological features, and clinical outcomes.

    Main Results:

    • Genome-wide hypomethylation and CpG hypermethylation correlate with HCC characteristics and prognosis.
    • Epigenetic silencing of Ras pathway inhibitors leads to Ras activation in all HCC.
    • Inactivation of specific tumor suppressor and angiogenesis inhibitor genes is linked to poor prognosis.

    Conclusions:

    • Methylation patterns in HCC have significant therapeutic and chemopreventive implications.
    • Epigenetically silenced genes in HCC, some also found in non-tumorous liver, represent potential molecular targets.
    • Targeting these methylation alterations could inhibit HCC development and progression.