Journal: Genes
Article Title: A Mouse Model of X-Linked Chronic Granulomatous Disease for the Development of CRISPR/Cas9 Gene Therapy
doi: 10.3390/genes15060706
Figure Lengend Snippet: Generation of a mouse model carrying a single-nucleotide deletion (C517) in exon 6 of the CYBB gene using CRISPR/Cas9-mediated HDR. ( A ) Scheme illustrating the HDR strategy for targeted deletion of C517 in exon 6 of the CYBB gene. Two guide RNAs (sgCybb#1 and sgCybb#2) were designed to target the desired region. Single-stranded DNA templates (ODNs) with a length of 125 nucleotides were synthesized as targeting donors for each sgRNA. The ODNs were designed to be homologous to the target region, except for the absence of a C at position 517. ( B ) To assess the activity of the guide RNAs (sgCybb#1 and sgCybb#2), the target region was amplified using the primers (Cybb_F2 and Cybb_R2), as indicated in ( A ). The resulting PCR products were incubated at 37 °C with crRNAs, tracrRNA, and recombinant SpCas9. The cleavage of the PCR products was analyzed by gel electrophoresis to evaluate the efficiency of the guide RNAs in inducing DNA cleavage. ( C ) Electroporation of ODN-Cybb#2 with sgCybb#2 and Cas9 into C57BL/6 mouse zygotes. Genotyping of the resulting founder mice was performed using PCR and Sanger sequencing with the indicated primers (Cybb_F1 and Cybb_R1). The genotypes of all founder mice are summarized in the table, with those carrying the desired genotype (∆C517), indicative of successful gene editing, highlighted in red. ( D ) Genotyping of F1 progeny derived from founder mutant #8327 by PCR (using indicated primers Cybb_F1 and Cybb_R1) and Sanger sequencing.
Article Snippet: The cells were washed once with PBS at room temperature, and 3 × 10 5 cells were resuspended in 20 μL of AMAXA electroporation buffer.
Techniques: CRISPR, Synthesized, Activity Assay, Amplification, Incubation, Recombinant, Nucleic Acid Electrophoresis, Electroporation, Sequencing, Derivative Assay, Mutagenesis