Seeing and believing: recent advances in imaging cell-cell interactions.

Area of Science:

• Cell biology
• Developmental biology
• Biophysics

Background:

• Cell-cell junctions are crucial for tissue integrity and development.
• Cadherins mediate cell adhesion and are key components of these junctions.
• Understanding junctional structure and dynamics is vital for biological processes.

Purpose of the Study:

• To review recent advances in imaging technologies and reagents for studying cadherin-based cell-cell junctions.
• To highlight novel insights gained from these new methodologies.
• To discuss the potential impact of these technologies on future research.

Main Methods:

• Application of super-resolution optical microscopy to analyze nanoscale organization of cadherins.
• Development of new approaches to measure mechanical forces acting on cell-cell junctions.
• Advancements in electron microscopy techniques for high-resolution imaging of junctional structures.

Main Results:

• Super-resolution imaging reveals nanoscale architecture of cadherin clusters at cell contacts.
• New methods allow for quantitative assessment of forces regulating junctional stability and dynamics.
• Electron microscopy provides unprecedented detail of junctional components and their interactions.

Conclusions:

• Emerging imaging technologies are revolutionizing the study of cadherin-based cell-cell junctions.
• These advances provide critical insights into junctional organization, mechanics, and function.
• Future research will benefit significantly from the integration of these powerful visualization and interrogation tools.