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Updated: Jul 19, 2026
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A Simple Microaspiration Technique for Isolating Somatic Cells from Cryopreserved Equine Semen as Nuclear Donors for Cloning
Published on: December 19, 2025
Handmade somatic cell cloning in cattle
Gàbor Vajta1, Ian M Lewis, R Tayfur Tecirlioglu
1Department of Animal Breeding and Genetics, Danish Institute of Agricultural Sciences, Tjele, Denmark.
Methods in Molecular Biology (Clifton, N.J.)
|September 22, 2006
Summary
Handmade cloning (HMC) simplifies somatic cell nuclear transfer (NT) by eliminating micromanipulators. This efficient technique offers a cost-effective, scalable solution for cloning across species.
Area of Science:
- Reproductive Biology
- Biotechnology
- Animal Science
Background:
- Somatic cell nuclear transfer (NT) faces technical hurdles hindering its application.
- Zona-free procedures offer potential solutions to improve NT techniques.
- Handmade cloning (HMC) is a novel, micromanipulator-free approach to NT.
Purpose of the Study:
- To introduce and evaluate the handmade cloning (HMC) technique for somatic cell nuclear transfer.
- To assess the efficiency, cost-effectiveness, and applicability of HMC compared to traditional NT methods.
- To explore the potential of HMC for large-scale cloning programs and automation.
Main Methods:
- HMC involves manual bisection of zona-free oocytes.
- Cytoplasts are selected using staining techniques.
- Somatic cells are simultaneously fused with two cytoplasts to create cloned embryos.
Main Results:
- HMC is a rapid, efficient, and cost-effective NT technique.
- It requires less expertise and time than conventional NT methods.
- Production efficiency is high, with no compromise on embryo quality, pregnancy rates, or live births.
Conclusions:
- HMC is a viable and advantageous alternative to traditional NT, particularly for bovine applications.
- The technique's simplicity and efficiency make it suitable for large-scale NT programs.
- HMC offers standardization and automation potential for experimental and commercial cloning.
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