Related Experiment Video
Updated: Jul 17, 2026
07:18
Microinjection of Zebrafish Embryos to Analyze Gene Function
Published on: March 9, 2009
Zebrafish embryos (Danio rerio) using microinjection.
Julia Kopeika1, Tiantian Zhang, David Rawson
1Institute of Research in the Applied Natural Sciences, University of Bedfordshire, Luton, UK.
Cryo Letters
|January 27, 2007
Summary
Micro-injecting cryoprotectants like methanol and sucrose into zebrafish embryo yolks did not improve survival rates. Intracellular crystallization temperatures were similar, but not always immediate after extracellular crystallization during cryopreservation.
Area of Science:
- Developmental Biology
- Cryobiology
- Zebrafish Embryology
Background:
- Low membrane permeability hinders successful cryopreservation of zebrafish embryos.
- Yolk modification via micro-injection is explored as a potential solution.
Purpose of the Study:
- To investigate yolk modification using methanol and sucrose micro-injections to overcome permeability issues in zebrafish embryo cryopreservation.
- To assess the impact of these cryoprotectants on embryo survival and crystallization processes.
Main Methods:
- Zebrafish embryos at 50% epiboly were micro-injected with Hanks' solution, methanol, or sucrose.
- Injected embryos were cultured to assess survival at hatching.
- Cryomicroscopy was used to study extra- and intracellular crystallization during a controlled cooling procedure.
Main Results:
- Micro-manipulation, including injections, significantly decreased zebrafish embryo survival (P < 0.05).
- Intracellular crystallization temperatures did not significantly differ between control and injected embryos.
- Intracellular crystallization did not consistently occur immediately following extracellular crystallization.
Conclusions:
- Micro-injection of methanol or sucrose into the yolk sac did not enhance zebrafish embryo cryopreservation success.
- Further research is needed to understand the dynamics of crystallization and improve cryopreservation protocols for zebrafish embryos.
