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Tissue morphogenesis coupled with cell shape changes.

Tadayoshi Watanabe1, Yoshiko Takahashi

  • 1Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara, Japan.

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This summary is machine-generated.

Coordinated tissue and cell shape changes during development are crucial for tissue segregation. Vertebrate somitogenesis reveals Ephrin-Eph signaling regulates cell shape via Cdc42 suppression, controlling fibronectin assembly for tissue separation.

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Area of Science:

  • Developmental Biology
  • Cell Biology
  • Molecular Biology

Background:

  • Morphological segregation of tissues during development requires coordinated changes in cell shape.
  • Vertebrate somitogenesis provides a model system to study the regulation of these coordinated events.

Purpose of the Study:

  • To overview recent progress in understanding the cellular and molecular regulation of tissue-cell shape coordination.
  • To elucidate the role of Ephrin-Eph signaling in somite formation and tissue segregation.

Main Methods:

  • Overview of recent research findings.
  • Focus on molecular signaling pathways involved in cell shape changes and tissue morphogenesis.

Main Results:

  • Ephrin-Eph signaling plays a central role in the formation of the somitic gap and cell epithelialization.
  • Ephrin signaling transduces intracellular signals through Cdc42 suppression, leading to integrin activation.
  • Integrin activation induces fibronectin assembly, coordinating tissue and cell shape changes.

Conclusions:

  • The precise coordination of tissue and cell shape changes is essential for proper development.
  • Ephrin-Eph signaling, coupled with Cdc42 and fibronectin, is a key mechanism regulating this coordination in somitogenesis.
  • This coupling mechanism is also relevant to tumor suppression.