Highly efficient multiplex targeted mutagenesis and genomic structure variation in Bombyx mori cells using...

Area of Science:

• Genetics
• Molecular Biology
• Entomology

Background:

• Bombyx mori is a key model organism for lepidopteran and arthropod research.
• Accurate genome editing tools are crucial for understanding gene function in insects.

Purpose of the Study:

• To develop and validate a highly efficient CRISPR/Cas9 system for genome editing in Bombyx mori.
• To demonstrate the system's capability for various genetic modifications in B. mori cells.

Main Methods:

• Utilized a CRISPR/Cas9 system for targeted genome editing.
• Applied the system to a B. mori cell line (BmNs).
• Performed single gene editing, large chromosomal deletions/inversions, and multiplex gene editing.

Main Results:

• Achieved highly efficient targeted genome editing of a single gene locus.
• Successfully mediated large chromosomal deletions and inversions.
• Demonstrated simultaneous multiplex genome editing of six genes.

Conclusions:

• The developed CRISPR/Cas9 system is simple, highly efficient, and versatile for Bombyx mori genome manipulation.
• This tool offers unprecedented possibilities for precise gene manipulation in B. mori.
• The system opens new avenues for functional genomics research in Bombyx mori and other lepidopteran insects.