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Dynamic heterogeneity and metastasis.

V Ling, A F Chambers, J F Harris

    Journal of Cellular Physiology. Supplement
    |January 1, 1984
    PubMed
    Summary
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    Metastatic cancer cells arise rapidly from unstable variants, with high rates of loss. This dynamic heterogeneity may drive malignant progression and tumor evolution.

    Area of Science:

    • Oncology
    • Cancer Biology
    • Genetics

    Background:

    • Tumor heterogeneity is a hallmark of cancer, influencing treatment response and disease progression.
    • Understanding the mechanisms driving the generation and loss of cellular variants is crucial for cancer research.

    Purpose of the Study:

    • To quantitate the rates of metastatic cell generation in murine cancer models.
    • To investigate the stability and loss rates of these metastatic variants.
    • To explore the concept of dynamic heterogeneity in malignant progression.

    Main Methods:

    • Utilized parallel clonal populations of KHT fibrosarcoma and B16 melanoma grown to small, defined sizes.
    • Quantitated the effective rates of metastatic cell generation per cell per generation.
    • Assessed the rates of loss for these variant metastatic cells.

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    Main Results:

    • Metastatic cells were generated at effective rates of 10(-5) per cell per generation or greater in both cancer models.
    • These metastatic variant cells were found to be unstable, with very high rates of loss.
    • The findings suggest a dynamic process of variant generation and loss contributing to cancer progression.

    Conclusions:

    • Metastases may originate from unstable cellular variants that arise and are lost rapidly.
    • Dynamic heterogeneity, characterized by rapid phenotypic changes, appears to be a significant factor in malignant progression.
    • The concept of dynamic heterogeneity offers a new framework for studying tumor heterogeneity.