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Supracellular structural principle of multicellular organisms

N Suwa

    Acta Pathologica Japonica
    |January 1, 1982
    PubMed
    Summary

    Supracellular structures follow a principle of equilibrium space division (ESD), a thermodynamic state of minimized energy, not direct genetic programming. This geometric principle influences blood vessel and artery structure.

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    Area of Science:

    • Biophysics
    • Thermodynamics
    • Structural Biology

    Background:

    • Supracellular structures, aggregates of units, are observed across biological systems.
    • Existing models often attribute structure to direct genetic templating.
    • The role of physical laws in dictating supracellular organization requires further elucidation.

    Purpose of the Study:

    • To propose a unifying structural principle for supracellular organization.
    • To investigate the thermodynamic and geometric underpinnings of supracellular structures.
    • To explore the influence of this principle on vascular geometry.

    Main Methods:

    • Defined Equilibrium Space Division (ESD) as a principle of minimal potential energy.
    • Applied thermodynamic concepts to supracellular assembly.
    • Utilized geometric modeling, including beta-tetrakaidecahedra, to approximate ESD.
    • Analyzed the localization of blood vessels within ESD.

    Main Results:

    • Identified ESD as a fundamental structural principle governing supracellular aggregates.
    • Demonstrated ESD as a geometrical expression of the second law of thermodynamics.
    • Showed that supracellular structures are not solely determined by genetic information.
    • Correlated blood vessel and artery geometry with ESD principles.

    Conclusions:

    • Equilibrium Space Division (ESD) provides a physical basis for supracellular structure.
    • Thermodynamic principles, rather than direct genetic templating, significantly influence supracellular organization.
    • ESD geometry offers a framework for understanding vascular system architecture.

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