Ultrasound microbubble-mediated CRISPR/Cas9 knockout of C-erbB-2 in HEC-1A cells

Area of Science:

• Molecular Biology
• Cancer Research
• Gene Editing Technologies

Background:

• Epidermal growth factor receptor 2 (C-erbB-2) is a frequently mutated oncogene in human tumors.
• Targeting oncogenes like C-erbB-2 is crucial for developing novel cancer therapies.

Purpose of the Study:

• To evaluate the efficiency of clustered regularly interspaced short palindromic repeat (CRISPR) technology for C-erbB-2 gene knockout.
• To assess the efficacy of ultrasound microbubble transfection for delivering CRISPR components into human endometrial cancer (HEC)-1A cells.

Main Methods:

• Designed three single guide RNAs (sgRNAs) targeting C-erbB-2 and constructed CRISPR/Cas9-C-erbB-2 plasmids.
• Transfected HEC-1A cells with plasmids using ultrasound microbubble technology.
• Quantified C-erbB-2 mRNA and protein levels using RT-PCR and western blotting, respectively.

Main Results:

• Significant reduction in C-erbB-2 mRNA and protein expression observed in cells transfected with sgRNA1.
• sgRNA1 demonstrated effective gene knockout, with mRNA levels at 0.57 ± 0.06 and protein levels at 0.269 ± 0.033.
• No significant gene expression changes were noted with sgRNA2 and sgRNA3 compared to controls.

Conclusions:

• Ultrasound microbubbles facilitate plasmid transfer into HEC-1A cells.
• This approach effectively interferes with gene expression and achieves C-erbB-2 knockout.
• CRISPR technology combined with ultrasound microbubble transfection is a viable strategy for targeting C-erbB-2 in endometrial cancer cells.