The genetically modified human foreskin fibroblast cell line (YhFF#8) stably expressing gene: A lab resource report.

BACKGROUND

Stable Cas9 (CRISPR-associated protein 9)-expressing cell lines have emerged as valuable tools in genetic research, enhancing the efficiency of the CRISPR/Cas9 system and streamlining gene editing procedures. These cell lines enable simultaneous editing of multiple genes and reduce the overall editing time.

OBJECTIVE

This study aimed to develop a stable human fibroblast cell line capable of genetic conversion into a mutant form, serving as a cellular model for a specific genetic disease. The established cell line facilitates investigation of disease mechanisms, testing of potential treatments, and gaining insights into underlying molecular processes.

MATERIALS AND METHODS

Human embryonic kidney 293LTV cells were used to produce pseudo-virus particles, while Yazd human foreskin fibroblasts batch 8 (YhFF#8) cells were targeted for genetic modification. Transfection of human embryonic kidney 293LTV cells with pCDH-Cas9 plasmid DNA generated pseudo-viral particles. YhFF#8 cells were transduced and selected using antibiotics. Green fluorescent protein (GFP) detection confirmed successful transduction and selection. Relative expression levels of the gene were determined by quantitative polymerase chain reaction.

RESULTS

The study validated the fidelity of the gene cassette sequence and its transcriptional activity. Transduced YhFF#8 cells exhibited green fluorescence, with antibiotic selection resulting in nearly 100% transduced cells. A reporter gene enabled real-time monitoring of YhFF#8-Cas9-GFP-PuroR cells using fluorescence microscopy.

CONCLUSION

YhFF#8-Cas9-GFP-PuroR cells, labeled and susceptible to genomic editing, provide an optimal source for generating induced pluripotent stem cell lines for future biomedical research.