Suspended embryo mount for imaging Caenorhabditis elegans.

Area of Science:

• Developmental Biology
• Microscopy Techniques
• Caenorhabditis elegans Research

Background:

• Accurate imaging of Caenorhabditis elegans embryos is crucial for developmental studies.
• Traditional agar mounts can lead to embryo shifting during long-term four-dimensional (4D) recordings due to evaporation.
• Improved sample preparation is needed for stable and reliable 4D imaging.

Purpose of the Study:

• To describe a novel protocol for preparing Caenorhabditis elegans embryos for 4D imaging.
• To present a method that enhances the stability of embryo mounts for 4D recordings.
• To offer an alternative to agar mounts for improved imaging fidelity.

Main Methods:

• Excising embryos from gravid hermaphrodites.
• Adhering embryos to a poly-L-lysine-coated coverslip.
• Creating a slide chamber with embryos suspended in buffer for imaging.

Main Results:

• The suspended mount technique provides stable 4D spatial registration.
• This method avoids the embryo shifting observed with agar mounts.
• Digital reorientation of embryos within the 3D stack is possible during post-processing.

Conclusions:

• The described protocol provides a superior method for preparing Caenorhabditis elegans embryos for 4D imaging.
• Suspended embryo mounts ensure greater stability and accuracy in 4D recordings.
• This technique facilitates more reliable post-processing and analysis of developmental processes.