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Updated: Mar 17, 2026
Application of Mouse Parthenogenetic Haploid Embryonic Stem Cells as a Substitute of Sperm
Published on: November 19, 2020
Rapidly generating knockout mice from H19-Igf2 engineered androgenetic haploid embryonic stem cells
Meili Zhang1, Yufang Liu1, Guang Liu1
1State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China; Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China.
Researchers generated healthy, fertile mice using modified androgenetic haploid embryonic stem cells (AG-haESCs). This breakthrough overcomes previous low efficiency, enabling practical production of gene-modified mouse models for research and reproductive medicine.
Area of Science:
- Mammalian developmental biology
- Reproductive technologies
- Stem cell research
Background:
- Haploid embryonic stem cells (ESCs) are valuable for genetic studies and reproduction.
- Previous methods using androgenetic haploid ESCs (AG-haESCs) resulted in low offspring viability and growth defects.
- Aberrant expression of imprinted genes was suspected as a cause for low birth rates.
Purpose of the Study:
- To improve the efficiency and viability of producing offspring from AG-haESCs.
- To investigate and correct imprinting locus defects in AG-haESCs.
- To establish a reliable method for generating gene-modified mouse models.
Main Methods:
- Modification of the H19-Igf2 imprinting locus in AG-haESCs.
- Generation of offspring via intracytoplasmic injection of modified AG-haESCs into oocytes.
- Assessment of offspring health, fertility, and genetic integrity.
Main Results:
- High-frequency generation of healthy, fertile mice from modified AG-haESCs.
- Restored normal paternal imprinting at the H19-Igf2 locus.
- Maintained pluripotency and feasibility of further genetic manipulation in AG-haESCs.
Conclusions:
- Modification of the H19-Igf2 imprinting locus successfully addresses previous viability issues.
- This approach provides an efficient and reliable tool for rapid production of gene-modified mouse models.
- The study offers significant benefits for future reproductive medicine applications.
