A Method to Reduce off-Targets in CRISPR/Cas9 System in Plants

Area of Science:

• Biotechnology
• Plant Science
• Nanotechnology

Background:

• CRISPR/Cas9 gene editing can cause off-target mutations.
• Temperature-sensitive gene delivery methods limit efficiency.
• Mesoporous silica nanoparticles (MSNs) offer a temperature-independent gene delivery solution.

Purpose of the Study:

• To develop a temperature-independent gene delivery system using MSNs for plant transformation.
• To enhance on-target mutagenesis in plants at 37°C using MSNs and CRISPR/Cas9.
• To synthesize and characterize functionalized MSNs for efficient pDNA delivery.

Main Methods:

• Synthesis of functionalized MSNs with particle size < 40 nm.
• Binding of plasmid DNA (pDNA) to the synthesized MSNs.
• Delivery of pDNA-MSNs into target plants at various temperatures, including 37°C.

Main Results:

• Successful synthesis of functionalized MSNs suitable for gene delivery.
• Efficient binding of pDNA to MSNs.
• Demonstrated temperature-independent gene transfer into target plants.

Conclusions:

• MSNs provide an effective and temperature-independent platform for plant gene delivery.
• This method enhances CRISPR/Cas9 on-target activity at 37°C, potentially reducing off-target effects.
• The pDNA-MSN system is a promising tool for improving plant genetic engineering.