Basement membrane dynamics and mechanics in tissue morphogenesis

Area of Science:

• Extracellular matrix biology
• Developmental biology
• Biophysics

Background:

• The basement membrane (BM) is a critical extracellular matrix layer essential for tissue structure, cell polarity, migration, and signaling.
• BMs exhibit diverse molecular compositions, structures, and assembly mechanisms, influencing tissue physical properties.
• Understanding how BM regulation impacts mechanical properties and morphogenesis remains incomplete.

Approach:

• This review synthesizes recent findings on basement membrane regulation and its role in morphogenesis.
• It highlights studies demonstrating how controlled BM deposition and degradation create heterogeneous matrices.
• The review connects matrix heterogeneity to temporospatial force generation and tissue sculpting.

Key Points:

• Basement membrane heterogeneity in protein density, composition, thickness, and polarization can be precisely controlled.
• Such controlled heterogeneity generates anisotropic forces within tissues.
• These forces are instrumental in directing tissue sculpting during development.

Conclusions:

• The basement membrane is a key regulator of morphogenesis through its dynamic and heterogeneous nature.
• Precise control over BM properties allows for intricate tissue shaping and organ development.
• Further research into BM regulation offers new insights into developmental mechanisms.