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Related Experiment Videos

Model for the genetic evolution of human solid tumors.

S E Shackney1, C A Smith, B W Miller

  • 1Cancer Cell Biology and Genetics Laboratory, Allegheny-Singer Research Institute, Pittsburgh, Pennsylvania 15212.

Cancer Research
|June 15, 1989
PubMed
Summary

Human solid tumors may evolve through a cycle of chromosome doubling and loss, potentially activating growth genes. Computer simulations support this model, suggesting gene activation is key for tumor development and aneuploid peaks.

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Area of Science:

  • Genetics
  • Cancer Biology
  • Computational Biology

Background:

  • Human solid tumors exhibit complex genetic alterations.
  • Cancer cell chromosome number instability is a common observation.

Purpose of the Study:

  • To propose and validate a conceptual model for the genetic evolution of human solid tumors.
  • To explore the role of chromosome number changes and gene activation in tumorigenesis.

Main Methods:

  • Developed a conceptual model based on observed cancer cell behavior.
  • Created a computer simulation system to test the model.
  • Simulated neoplastic transformation of mouse fibroblasts in vitro.

Main Results:

  • Model simulations generated distributions of chromosome number per cell.

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  • Simulations indicated that activation of at least two growth-promoting genes best fit experimental data.
  • Modeling suggests growth gene activation is necessary for discrete aneuploid peaks.

    • Conclusions:

    • The proposed model provides a framework for understanding human solid tumor genetic evolution.
    • Chromosome doubling, loss, and growth gene activation are likely key drivers.
    • Model findings align with extensive cytogenetic and flow cytometry data from human solid tumors.