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An Effective Feedback Loop between Cell-Cell Contact Duration and Morphogen Signaling Determines Cell Fate
Vanessa Barone1, Moritz Lang1, S F Gabriel Krens1
1Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria.
Developmental Cell
|October 17, 2017
Summary
Cell-cell contact duration and morphogen signaling create a feedback loop that guides cell fate during zebrafish development. This interaction determines if cells become prechordal plate or endoderm.
Area of Science:
- Developmental biology
- Cell biology
- Systems biology
Background:
- Cell-cell contact is crucial for development and cell differentiation.
- The interplay between cell contact and fate specification is not well understood.
Purpose of the Study:
- To investigate the relationship between cell-cell contact duration, morphogen signaling, and cell fate specification.
- To elucidate the role of this interplay in zebrafish gastrulation and mesendoderm development.
Main Methods:
- Experimental manipulation of cell-cell contacts and morphogen signaling.
- Mathematical modeling of developmental processes.
- Zebrafish gastrulation studies.
Main Results:
- A positive feedback loop exists between cell-cell contact duration and Nodal signaling in prechordal plate progenitor cells.
- Longer cell-cell contacts increase responsiveness to Nodal signaling, promoting cell-fate specification.
- Nodal signaling reinforces cell-cell contact duration, creating a self-sustaining loop.
Conclusions:
- Interdependent cell-cell signaling and contact formation drive cell fate diversification.
- This feedback mechanism dictates whether anterior axial mesendoderm cells differentiate into prechordal plate or endoderm.
- The study reveals a novel regulatory mechanism controlling embryonic development.