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Microbubble-enhanced sonoporation: efficient gene transduction technique for chick embryos.
Sho Ohta1, Kentaro Suzuki, Katsuro Tachibana
1Center for Animal Resources and Development (CARD) and Graduate School of Medical and Pharmaceutical Sciences, Kumamoto University, Honjo 2-2-1, Kumamoto 860-0811, Japan.
Genesis (New York, N.Y. : 2000)
|November 5, 2003
Summary
A novel sonoporation technique enables efficient gene transduction in vertebrate embryos, facilitating the study of gene functions during development with minimal damage. This method successfully induced limb malformations by misexpressing the sonic hedgehog gene.
Area of Science:
- Developmental Biology
- Molecular Biology
- Biotechnology
Background:
- Gene function studies are crucial for understanding vertebrate embryogenesis.
- Existing gene transduction techniques can be invasive or inefficient for embryonic studies.
Purpose of the Study:
- To introduce a new, minimally invasive gene transduction technique for studying embryonic gene function.
- To evaluate the efficacy of microbubble-enhanced sonoporation for ectopic and transient gene expression in chick embryos.
Main Methods:
- Developed and applied microbubble-enhanced sonoporation for gene delivery into embryonic chick limb bud mesenchymes.
- Utilized reporter genes (GFP, LacZ) and a developmental gene (Shh) to assess transduction efficiency and biological effects.
- Monitored embryo survival, abnormalities, and gene expression post-sonoporation.
Main Results:
- Sonoporation achieved efficient, transient expression of exogenous genes (GFP, LacZ) in limb bud mesenchymes with low embryonic damage.
- Most treated chick embryos survived sonoporation without significant abnormalities.
- Misexpression of sonic hedgehog (Shh) in developing chick limbs resulted in malformations, including partial digit duplication.
Conclusions:
- Microbubble-enhanced sonoporation is a simple, efficient, and low-damage method for transient gene transduction in vertebrate embryos.
- This technique is effective for studying gene function during embryogenesis, as demonstrated by Shh misexpression-induced limb malformations.
- The method holds promise for future applications in developmental biology research.