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Intercellular coupling amplifies fate segregation during Caenorhabditis elegans vulval development.

Claudiu A Giurumescu1, Paul W Sternberg, Anand R Asthagiri

  • 1Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, CA 91125, USA.

Proceedings of the National Academy of Sciences of the United States of America
|January 25, 2006
PubMed
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Mathematical modeling of Caenorhabditis elegans vulval development reveals that coupling LIN-3 and LIN-12 signaling pathways amplifies gradient perception and enhances cell fate segregation, improving pattern formation.

Area of Science:

  • Developmental Biology
  • Cell Signaling
  • Computational Biology

Background:

  • Vulval development in C. elegans involves precise cell fate patterning.
  • This process is regulated by LIN-3 (a growth factor) and LIN-12 (a Notch-like receptor).
  • These signaling pathways are known to be coupled, with complex interactions.

Purpose of the Study:

  • To quantitatively analyze the implications of coupled LIN-3 and LIN-12 signaling on vulval cell patterning.
  • To understand how network topology influences cell fate determination.

Main Methods:

  • Development of a mathematical model simulating LIN-3/LIN-12 signaling in vulval precursor cells.
  • Analysis of signal amplification and lateral signaling polarization.

Related Experiment Videos

Main Results:

  • The coupled signaling system amplifies cellular perception of the LIN-3 gradient.
  • Lateral cell-cell signaling is polarized by the coupled network.
  • These effects enhance cell fate segregation compared to uncoupled systems.

Conclusions:

  • Coupling of LIN-3 and LIN-12 signaling is crucial for robust vulval cell patterning.
  • Mathematical modeling provides quantitative insights into developmental signaling networks.
  • This study elucidates the mechanisms underlying precise cell fate acquisition in C. elegans.