Related Experiment Videos
Highly efficient and reliable chemically assisted enucleation method for handmade cloning in cattle
Gábor Vajta1, Poul Maddox-Hyttel, Christina T Skou
1Population Genetics and Embryology, Department of Genetics and Biotechnology, Danish Institute of Agricultural Sciences, DK-8830 Tjele, Denmark.
Reproduction, Fertility, and Development
|February 16, 2006
Summary
This study introduces an efficient chemical method for enucleation in handmade cloning (HMC). The new procedure improves reliability and blastocyst rates, eliminating the need for specialized equipment.
Area of Science:
- Reproductive Biology
- Developmental Biology
- Assisted Reproductive Technologies
Background:
- Handmade cloning (HMC) is a technique used in assisted reproduction.
- Efficient and reliable enucleation is crucial for the success of HMC.
Purpose of the Study:
- To develop an efficient and reliable chemical enucleation procedure for handmade cloning (HMC).
- To assess the impact of demecolcine treatment on oocyte microtubules and overall ultrastructure.
Main Methods:
- Oocytes were treated with demecolcine and pronase.
- Manual enucleation of one-third of the cytoplasm was performed.
- Reconstructed embryos were cultured for 7 days to assess development.
Main Results:
- The chemical enucleation method achieved 94% efficiency and 98% reliability.
- Demecolcine treatment disoriented microtubules but did not alter overall oocyte ultrastructure.
- The blastocyst rate reached 48% without oocyte selection based on polar body presence.
Conclusions:
- The developed chemical enucleation method is efficient and reliable for HMC.
- This technique eliminates the need for expensive equipment and potentially harmful steps.
- The procedure offers a viable alternative to existing enucleation methods for handmade cloning.