Low-cost silicone imaging casts for zebrafish embryos and larvae

Area of Science:

• Developmental Biology
• Microscopy Techniques
• Biotechnology

Background:

• Zebrafish embryos are valuable for time-lapse confocal microscopy due to their optical clarity and size.
• Current methods for mounting zebrafish embryos for imaging have remained largely unchanged despite advances in microscopy.
• Existing mounting techniques in agarose can limit reproducibility and positional control.

Purpose of the Study:

• To develop and present a novel, accessible method for mounting zebrafish embryos and larvae for microscopy.
• To improve the consistency and reproducibility of embryo and larva positioning during imaging.
• To provide a cost-effective and easily replicable mounting solution for the zebrafish research community.

Main Methods:

• Development of 3D printed plastic molds for creating silicone casts.
• Utilizing these molds to achieve consistent and reproducible X, Y, and Z positioning of zebrafish specimens.
• Testing compatibility of the silicone casts with both upright and inverted microscopes.

Main Results:

• 3D printed molds enable the creation of silicone casts for precise zebrafish embryo and larva mounting.
• The technique ensures consistent and reproducible positioning, crucial for time-lapse imaging.
• The molds are inexpensive, easily reproducible, and reusable, enhancing accessibility for researchers.

Conclusions:

• This 3D printing-based mounting technique offers a significant improvement over traditional methods for zebrafish embryo imaging.
• The accessibility and reproducibility of this method make it a valuable tool for the broader zebrafish research community.
• The technique is adaptable for various microscopy setups, enhancing its utility in developmental biology studies.