Expanding the CRISPR Toolbox in Zebrafish for Studying Development and Disease

Area of Science:

• Genetics
• Molecular Biology
• Developmental Biology

Background:

• Model organisms, such as zebrafish (Danio rerio), are crucial for understanding development, homeostasis, and disease.
• Gene knockouts in model organisms have historically been vital for studying gene function and its link to human diseases.
• CRISPR-Cas9 technology offers powerful genetic manipulation capabilities in model organisms.

Purpose of the Study:

• To review novel CRISPR-based tools and approaches for genome editing.
• To highlight applications in developing disease models and understanding pathophysiology.
• To discuss advancements in specificity, target coverage, and new CRISPR systems.

Main Methods:

• CRISPR/Cas9-mediated targeted mutagenesis for generating knockout and knock-in alleles.
• Application of novel CRISPR systems (e.g., Cas12a, engineered Cas9 variants).
• Development and utilization of base editors for precise point mutation correction.
• Implementation of lineage tracing and transcriptional modulation techniques.

Main Results:

• CRISPR-based approaches enable sophisticated genetic modifications in zebrafish.
• Emerging CRISPR tools expand the scope of genome editing applications.
• Base editors offer precise correction of pathogenic single point mutations.
• Advanced techniques like lineage tracing provide new insights into biological processes.

Conclusions:

• CRISPR technology has significantly advanced the study of gene function and disease modeling in zebrafish.
• Novel CRISPR tools, including base editors and lineage tracing, offer unprecedented precision and versatility.
• Ongoing research focuses on enhancing CRISPR system specificity and expanding their applicability for human disease research.