Soft matter models of developing tissues and tumors

Area of Science:

• Biophysics
• Soft Condensed Matter Physics
• Cellular Mechanics

Background:

• Biological tissues exhibit mechanical properties analogous to inert soft condensed matter.
• Techniques from soft matter physics allow quantitative characterization of tissue mechanics (e.g., elasticity, viscosity).
• Soft matter models explain passive tissue dynamics like cell sorting and spreading.

Purpose of the Study:

• To review the application of soft condensed matter physics to biological tissues.
• To highlight the successes and limitations of inert soft matter analogies for living tissues.
• To discuss the implications for understanding morphogenesis, cancer, and tissue engineering.

Main Methods:

• Review of experimental techniques and biophysical models.
• Exploitation of analogies between inert soft matter and biological tissues.
• Analysis of dynamical tissue behaviors explained by soft matter frameworks.

Main Results:

• Soft matter analogies successfully explain passive tissue behaviors (e.g., spreading, cell sorting).
• Living tissues display active responses (e.g., rigidity sensing, pulsation) not found in inert materials.
• Soft matter models offer insights into morphogenesis and cancer invasion.

Conclusions:

• Inert soft matter analogies are valuable for understanding passive tissue mechanics and dynamics.
• Active biological responses necessitate extensions beyond traditional soft matter frameworks.
• This research lays foundations for medical applications in tissue engineering.