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Mouse submandibular gland morphogenesis: a paradigm for embryonic signal processing.

M Melnick1, T Jaskoll

  • 1Laboratory for Developmental Genetics, University of Southern California, Los Angeles 90089-0641, USA. mmelnick@hsc.usc.edu

Critical Reviews in Oral Biology and Medicine : an Official Publication of the American Association of Oral Biologists
|May 11, 2002
PubMed
Summary

Embryogenesis relies on signal processing, where complex networks enhance initial signals. The submandibular gland

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Area of Science:

  • Developmental Biology
  • Systems Biology
  • Epigenetics

Background:

  • Signal transduction pathways are fundamental to embryogenesis, processing information akin to Information Theory in open systems.
  • Waddington's Epigenetic Landscape metaphor can be modeled mathematically as a neural network.
  • Epigenetic circuits are recurrently utilized across various developmental stages and organogenesis processes.

Purpose of the Study:

  • To explore the role of signal processing and epigenetic circuits in embryonic development.
  • To model Waddington's Epigenetic Landscape using neural network principles.
  • To utilize submandibular gland development as a model for understanding epigenetic circuit function.

Main Methods:

  • Conceptual modeling of Waddington's Epigenetic Landscape as a neural network.

Related Experiment Videos

  • Analysis of signal transduction pathways (hormones, growth factors, cytokines, neurotransmitters) as Boolean logic gates.
  • Investigating submandibular gland embryonic and fetal development as a paradigm.

    • Main Results:

    • Signal transduction networks present receivers with amplified information compared to the initial signal.
    • The neural network model encapsulates the interacting signal transduction pathways crucial for development.
    • Submandibular gland development exemplifies the application of epigenetic circuits in organogenesis.

    Conclusions:

    • Embryogenesis is fundamentally a process of sophisticated signal processing.
    • Neural network and Information Theory frameworks provide valuable models for understanding developmental signal transduction.
    • Submandibular gland development showcases how conserved epigenetic circuits drive complex phenotypic outcomes like branching and lumen formation.