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Related Experiment Videos

Modeling spatial patterns in Dictyostelium.

Herbert Levine1

  • 1Department of Physics and Institute for Nonlinear Science, University of California, San Diego, La Jolla, California 92093-0402.

Chaos (Woodbury, N.Y.)
|September 1, 1994
PubMed
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Dictyostelium discoideum transitions from single cells to cooperation. This study reviews models of its aggregation phase, focusing on cAMP waves and chemotaxis, and introduces a new simulation strategy.

Area of Science:

  • Cellular Biology
  • Biophysics
  • Developmental Biology

Background:

  • Dictyostelium discoideum exhibits a life cycle involving a transition from unicellular to multicellular behavior.
  • The aggregation phase is crucial for initiating multicellular cooperativity.

Purpose of the Study:

  • To review semiquantitative models of the Dictyostelium discoideum aggregation phase.
  • To investigate the emergence of streaming patterns through a novel simulation approach.

Main Methods:

  • Review of existing models for cAMP wave propagation and chemotaxis coupling.
  • Development of a new simulation strategy coupling dynamical cell-like entities ('bions') with continuum chemical fields.

Main Results:

Related Experiment Videos

  • Analysis of cAMP wave propagation as excitable signaling, destabilized by chemotaxis.
  • Emergence of streaming patterns from simulated cell clumping instability.

    • Conclusions:

    • Current models may not fully capture the robustness of biological systems.
    • Future research should explore three-dimensional slug formation and motion beyond the aggregation phase.