Let's push things forward: disruptive technologies and the mechanics of tissue assembly

Area of Science:

• Developmental biology
• Biophysics
• Cell mechanics

Background:

• Molecular mechanisms of embryonic tissue assembly are known, but the role of physical forces is unclear.
• Previous studies qualitatively suggested mechanical loads regulate development, but lacked quantitative evidence.
• Embryonic tissues exhibit complex behaviors like large deformations and evolving viscoelastic properties, hindering mechanical studies.

Purpose of the Study:

• To present novel experimental techniques for quantitatively studying the mechanics of embryonic tissue assembly.
• To enable detailed analysis of kinematics, forces, and constitutive properties during tissue development.
• To advance the understanding of how physical forces influence tissue form and developmental processes.

Main Methods:

• Light sheet microscopy for high-resolution imaging.
• Optical coherence tomography for 3D structural analysis.
• Traction force microscopy and fluorescence force spectroscopy for measuring cellular forces.
• Microrheology and micropatterning for assessing material properties.

Main Results:

• Development of novel experimental techniques to quantify physical forces in tissue assembly.
• Detailed characterization of kinematics, forces, and material properties in embryonic tissues.
• Demonstration of how these advanced techniques can overcome challenges posed by complex tissue behavior.

Conclusions:

• The presented technologies provide a quantitative framework for studying tissue mechanics.
• These methods facilitate a deeper understanding of the physical principles governing embryonic development.
• This work paves the way for elucidating the interplay between molecular mechanisms and physical forces in tissue assembly.