Related Experiment Videos
A biolistic process for in vitro gene transfer into chicken embryos
L A Ribeiro1, P D Mariani, J L Azevedo
1Departamento de Produção Animal, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, SP, Brasil.
Summary
This study optimized biolistic transformation in chicken embryos using a helium gas pressure device. The findings demonstrate an efficient method for gene expression studies in avian models.
Area of Science:
- Developmental Biology
- Molecular Biology
- Biotechnology
Background:
- Chicken embryos are valuable models for studying early development and gene function.
- Efficient and reliable methods for genetic manipulation are crucial for advancing avian research.
Purpose of the Study:
- To optimize biolistic transformation parameters for chicken embryos.
- To establish an efficient method for transient gene expression in avian embryos.
Main Methods:
- Utilized a biolistic device with high helium gas pressure to deliver DNA-coated particles into chicken embryos.
- Employed the lacZ gene as a reporter to assess transformation efficiency.
- Systematically varied parameters such as gas pressure, vacuum, particle type, flying distance, and embryo placement.
Main Results:
- Identified optimal conditions (800 psi helium, 500 mmHg vacuum, 8 cm distance, 0.5 cm placement) yielding 100% transformation efficiency and 25% survival rate.
- Observed 100 to 1,000 expression units per embryo body cell.
- Confirmed gene expression via detection of green fluorescent protein (GFP).
Conclusions:
- Biolistic transformation is an efficient method for chicken embryo genetic manipulation.
- This technique provides a robust model for studying transient gene expression and tissue-specific promoters in avian systems.