Recent Genome-Editing Approaches toward Post-Implanted Fetuses in Mice.

Area of Science:

• Molecular Biology
• Developmental Biology
• Genetics

Background:

• Genome editing, particularly CRISPR/Cas9, is a powerful tool for creating genetically modified animals and cells.
• Applications include gene function analysis and the development of disease models.

Purpose of the Study:

• To review and highlight the latest techniques for gene editing in developing fetuses.
• Focus on methods applicable during mid-gestational stages (embryonic days 9-15).

Main Methods:

• In utero delivery of genome-editing components (viral or nonviral vectors) followed by electroporation.
• Maternal administration of genome-editing components via tail-vein injection for placental transmission to fetal cells.
• Comparison of these methods for targeting specific fetal cell populations.

Main Results:

• Detailed review of current techniques for fetal gene editing during mid-gestation.
• Discussion of the efficacy and applicability of in utero injection and maternal tail-vein injection methods.
• Exploration of challenges and advancements in delivering editing components to fetal cells.

Conclusions:

• Mid-gestational fetal gene editing offers significant potential for research and therapeutic applications.
• The reviewed methods provide viable strategies for genetic modification of developing fetuses.
• Continued development of these techniques will enhance the creation of precise animal models and potential gene therapies.