Visualizing Membrane Nanotube Dynamics in Drosophila Oocyte Using Live-Cell Imaging

Area of Science:

• Cell Biology
• Developmental Biology
• Microscopy

Background:

• Thin membrane protrusions like cytonemes and nanotubes are crucial for cell communication and development.
• The formation and function of these cellular structures are not fully understood.
• Existing methods often fail to capture dynamic processes in living tissues.

Purpose of the Study:

• To develop an improved live-cell imaging protocol for observing polar cell protrusions in developing *Drosophila* eggs.
• To enable real-time, high-resolution tracking of membrane protrusion dynamics.
• To provide a foundation for functional studies of membrane protrusions.

Main Methods:

• Optimized live-cell imaging combining precise developmental staging, fine dissection, and ex vivo culture of *Drosophila* egg chambers.
• Adjusted imaging settings to minimize phototoxicity and thermal stress.
• Integrated pharmacological treatments for functional perturbation experiments.

Main Results:

• Successfully visualized polar cell nanotube formation and dynamics in real-time within intact living tissue.
• Maintained egg chamber viability for extended imaging periods.
• Acquired high-resolution, reproducible datasets with minimal artifacts.

Conclusions:

• The developed protocol overcomes limitations of fixed-tissue methods for studying membrane protrusions.
• This technique provides a robust platform for investigating cell protrusion biology and developmental processes.
• The method is adaptable for studying similar phenomena in other biological systems and disease models.