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Tracking Morphogenetic Tissue Deformations in the Early Chick Embryo
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Dynamic morphoskeletons in development.

Mattia Serra1, Sebastian Streichan2,3, Manli Chuai4

  • 1School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138.

Proceedings of the National Academy of Sciences of the United States of America
|May 9, 2020
PubMed
Summary
This summary is machine-generated.

Researchers identified dynamic morphoskeletons, the core patterns of cell movement, to understand how collective cell motion drives tissue formation in developmental biology. This method reveals hidden spatial dynamics and distinguishes between different embryo phenotypes.

Keywords:
cell motioncoherent structuresfinite time Lyapunov exponentmorphogenesis

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Area of Science:

  • Developmental Biology
  • Cell Biology
  • Biophysics

Background:

  • Morphogenesis involves complex, coordinated cell movements.
  • Understanding the collective behavior of cells in tissue formation is a key challenge.

Purpose of the Study:

  • To identify the underlying dynamic structures governing morphogenetic flows.
  • To develop a model-free, parameter-free method for analyzing tissue deformation.

Main Methods:

  • Utilized kinematics of tissue deformation and cell velocity data.
  • Computed dynamic morphoskeletons, analyzing Lagrangian deformation.
  • Applied the method to wild-type and mutant chick and fly embryos.

Main Results:

  • Identified dynamic morphoskeletons as evolving centerpieces of multicellular trajectory patterns.
  • Revealed spatial attractors and repellers of embryonic development.
  • Captured early morphogenetic features and distinguished between phenotypes.

Conclusions:

  • Dynamic morphoskeletons provide a robust, invariant method to analyze collective cell motion.
  • This approach offers insights into developmental mechanisms inaccessible by other methods.
  • The findings aid in understanding embryonic development and genetic variations.