Progress and prospects: techniques for site-directed mutagenesis in animal models

Area of Science:

• Genetics and Genomics
• Animal Model Development

Background:

• Traditional gene targeting in animals often relies on embryonic stem cell-derived chimeras, a complex and time-consuming process.
• The development of genetically modified animal models is crucial for advancing biomedical research.

Purpose of the Study:

• To highlight recent advancements in gene-targeting technologies for creating genetically modified non-mouse animal models.
• To emphasize the acceleration of animal model production for research purposes.

Main Methods:

• Application of adeno-associated virus (AAV) vectors for gene delivery.
• Utilizing designer zinc-finger nucleases (ZFNs) for precise gene editing.
• Integration of gene targeting with somatic cell nuclear transfer (SCNT) and germ cell transplantation.

Main Results:

• Successful generation of genetically modified ferrets, pigs, mice, and zebrafish using novel gene-targeting approaches.
• Demonstration that these methods bypass the requirement for embryonic stem cell-derived chimeras.
• Significant acceleration in the production of diverse, non-mouse animal models.

Conclusions:

• New gene-targeting tools, including AAV and ZFNs, have revolutionized the creation of genetically modified animals.
• These techniques streamline the generation of gene-targeted animal models, accelerating biomedical research.
• The development of non-mouse animal models is now more efficient, expanding research possibilities.