Genetic engineering including superseding microinjection: new ways to make GM pigs

Area of Science:

• Genetics
• Molecular Biology
• Animal Science

Background:

• Genetic engineering in swine is vital for xenotransplantation, disease models, and research.
• Modifications aim to overcome immune responses to species-specific antigens.

Purpose of the Study:

• To review current and emerging techniques for generating genetically modified pigs.
• To highlight advancements improving efficiency and precision in swine genetic engineering.

Main Methods:

• Discusses DNA microinjection, viral vectors, and somatic cell nuclear transfer (SCNT).
• Highlights enzymatic engineering tools like zinc-finger nucleases, recombinases, and transposons.
• Emphasizes SCNT as the current most efficient method for generating genetically modified pigs.

Main Results:

• SCNT is the most efficient method for producing genetically modified pigs currently.
• Enzymatic engineering tools (ZFNs, recombinases, transposons) are poised to revolutionize the field.
• Despite progress, genetic engineering in large animals remains challenging.

Conclusions:

• Recent cell and molecular biology advancements offer new avenues for pig transgenesis.
• Future developments promise easier, cost-effective, and more efficient transgenic pig production.