Labeling and imaging cells in the zebrafish hindbrain

Area of Science:

• Developmental Biology
• Cell Biology
• Microscopy Techniques

Background:

• Understanding vertebrate embryonic morphogenesis requires high-resolution cell imaging.
• Zebrafish embryos offer a model system for studying early development.
• Mosaic expression via DNA injection allows visualization of specific cells.

Purpose of the Study:

• To describe a protocol for high-resolution imaging of cells during zebrafish neurulation.
• To enable visualization of cellular behaviors during neural tube formation.
• To provide methods for both fixed and live imaging of embryonic development.

Main Methods:

• Injection of plasmid DNA encoding membrane-targeted Green Fluorescent Protein (mGFP) into zebrafish embryos.
• Processing embryos for vibratome sectioning, antibody labeling, and confocal microscopy.
• Utilizing time-lapse confocal microscopy for live imaging of mGFP-expressing embryos.

Main Results:

• Achieved high-resolution visualization of cell shapes and organization in fixed neural tube preparations.
• Enabled real-time imaging of cellular dynamics during neurulation using live microscopy.
• Successfully applied the protocol to analyze cellular behaviors driving hindbrain neural tube formation.

Conclusions:

• The described mGFP DNA injection protocol is effective for high-resolution imaging of zebrafish embryonic development.
• Combining fixed and live imaging provides comprehensive insights into cellular processes during neurulation.
• This method advances the study of morphogenetic processes in early vertebrate embryos.