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Related Experiment Videos

A possible morphogen controlling differentiation in Dictyostelium.

R R Kay, K A Jermyn

    Nature
    |May 19, 1983
    PubMed
    Summary
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    An F-Box/WD40 repeat-containing protein important for Dictyostelium cell-type proportioning, slug behaviour, and culmination.

    Developmental biology·2000

    Researchers identified DIF as a key morphogen in Dictyostelium discoideum development. This factor regulates cell differentiation, inhibiting spore formation and promoting stalk cell development in the slime mold slug.

    Area of Science:

    • Developmental Biology
    • Cell Signaling
    • Morphogenesis

    Background:

    • Complex organism morphology arises from cell movement, cohesion, and social interactions within morphogenetic fields.
    • These fields exhibit self-organization, differentiation, and pattern formation independent of size, with regenerative capabilities.
    • Identifying signaling molecules (morphogens) underlying these processes has been challenging.

    Purpose of the Study:

    • To identify and characterize morphogens involved in pattern formation and cell differentiation.
    • To investigate the role of the previously described factor DIF in Dictyostelium discoideum development.
    • To determine if DIF regulates cell fate decisions in the slime mold slug.

    Main Methods:

    • Studied the simplest known morphogenetic field in Dictyostelium discoideum.

    Related Experiment Videos

  • Investigated the effect of purified DIF on isolated amoebae.
  • Assessed DIF's influence on both stalk cell differentiation and spore formation.

    • Main Results:

    • Purified DIF was shown to inhibit spore formation in Dictyostelium cells.
    • DIF actively promotes stalk cell differentiation.
    • These actions collectively switch cells towards stalk cell fate.

    Conclusions:

    • DIF is identified as a crucial morphogen in Dictyostelium discoideum development.
    • DIF regulates the critical choice of differentiation pathway for cells within the slime mold slug.
    • This finding advances understanding of pattern formation and cell fate determination in simple multicellular organisms.