Theoretical tool bridging cell polarities with development of robust morphologies.

Area of Science:

• Developmental biology
• Cell biology
• Theoretical biology

Background:

• Multicellular organisms maintain complex morphologies despite constant renewal and damage.
• Understanding the basis of this morphological stability, complexity, and diversity is a fundamental question in biology.
• Focusing solely on protein sequences may be insufficient to explain morphological outcomes.

Purpose of the Study:

• To propose and investigate the hypothesis that stability, complexity, and diversity are emergent properties of proliferating polarized cell populations.
• To develop a theoretical framework capturing polar cell adhesions to study morphological development.

Main Methods:

• Development of a theoretical approach to model polar cell adhesions.
• Application of the theoretical model to developmental processes like gastrulation, and the formation of folds and tubes.

Main Results:

• The theoretical tool successfully captures key aspects of polar cell adhesions.
• The model suggests that specific parameters significantly influence morphological outcomes.
• Identified key determinants of morphological diversity and stability.

Conclusions:

• Morphological stability, complexity, and diversity arise from the collective behavior of proliferating polarized cells.
• The strength of polar adhesion, the directionality of cell polarities, and the rate of cell proliferation are critical factors.
• The findings provide experimentally testable predictions for future research in developmental biology.