Convergent extension: using collective cell migration and cell intercalation to shape embryos

Area of Science:

• Developmental Biology
• Morphogenesis
• Cell Biology

Background:

• Body axis elongation is fundamental to development.
• Convergent extension (CE) drives axis elongation without increasing cell number.
• CE involves tissue narrowing and simultaneous extension.

Purpose of the Study:

• To provide an overview of convergent extension (CE) as a general strategy for body axis elongation.
• To discuss conserved and divergent mechanisms of CE across different species.

Main Methods:

• Literature review of convergent extension (CE) mechanisms.
• Comparative analysis of CE across various species.
• Synthesis of current understanding of CE drivers.

Main Results:

• CE is a conserved morphogenetic process essential for body axis elongation.
• Key drivers of CE include collective cell migration and cell intercalation.
• Mechanisms of CE show both conserved features and species-specific variations.

Conclusions:

• Convergent extension (CE) is a versatile mechanism for body axis elongation.
• Understanding CE mechanisms provides insights into developmental processes.
• Comparative studies highlight the evolution of morphogenetic strategies.