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Construction of Human Neuromuscular Disease-Related Gene Site-Specific Mutant Cell Line by Cas9 Mutation System

Yinbing Zhang, Yuxin Wang, Cheng Du

Article ID: 1110
Vol 4, Issue 1, 2020, Article identifier:

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Objective: to construct human neuromuscular disease-related gene site-specific mutant cell line by Cas9 mutation system. Methods: according to the principle of CRISPR/Cas9 target design, the exon region of CXCR4 gene sequence was found in the National Center for Biotechnology Information (NCBI) of the United States. Two sgRNAs were designed. Lenticrisprv2 was used as the vector to construct the lenticrisprv2-sgrna recombinant plasmid, which was transformed into the sensitive stbl3 strain. The monoclonal sequencing was selected to verify and expand the culture of the plasmid, then it was transferred to 293T cells for packaging to a slow virus. The virus was collected and infected with 4T1 cells. The monoclonal cells were isolated and cultured by puromycin screening and limited dilution method. The genomic DNA of the selected monoclonal cells was extracted and the DNA fragment near the knockout site was amplified by PCR and sequenced. Results: one cell line had 6 deletion mutations, including DYSF mutation site of neuromuscular disease gene and HEK293T cell model knocked out by DYSF mutation site of neuromuscular disease gene. Conclusion: the recombinant plasmid targeting CXCR4 gene was obtained by CRISPR/Cas9 system, and the human neuromuscular disease-related gene site-specific mutant cell line was successfully constructed.


Cas9 Mutation System; Neuromuscular Disease; Mutant Cell line

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