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Transgenic birds from transformed primordial germ cells
1Department of Pure and Applied Zoology, School of Animal and Microbial Sciences, University of Reading, U.K.
Proceedings. Biological Sciences
|March 22, 1993
Summary
Researchers successfully created transgenic birds by modifying primordial germ cells (PGCS) and implanting them into embryos. This breakthrough enables the production of offspring carrying foreign DNA, marking a significant advancement in avian genetics.
Area of Science:
- Developmental Biology
- Genetics
- Reproductive Biology
Background:
- Primordial germ cells (PGCS) are essential for gamete formation in avian embryos.
- PGCS can be isolated from the germinal crescent or embryonic blood during migration.
Purpose of the Study:
- To establish a method for producing transgenic avian offspring.
- To demonstrate the direct use of primordial germ cells for genetic modification.
Main Methods:
- Isolation of PGCS from avian embryos (germinal crescent or blood).
- Transfection of PGCS with defective retroviruses.
- Injection of manipulated PGCS into recipient embryos to create chimeras.
Main Results:
- Chimeric birds developed to sexual maturity.
- Transgenic offspring containing foreign DNA were successfully produced.
- This study represents the first direct use of PGCS for generating transgenic birds.
Conclusions:
- Direct manipulation and transfer of primordial germ cells offer a viable route to avian transgenesis.
- This technique provides a powerful tool for genetic research and application in poultry.