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Authors: Wrona, Dominik and Siler, Ulrich and Reichenbach, Janine

Development of gene therapy vectors requires cellular models reflecting the genetic background of a disease thus allowing for robust preclinical vector testing. For human p47(phox)-deficient chronic granulomatous disease (CGD) vector testing we generated a cellular model using clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 to introduce a GT-dinucleotide deletion (?GT) mutation in p47(phox) encoding NCF1 gene in the human acute myeloid leukemia PLB-985 cell line. CGD is a group of hereditary immunodeficiencies characterized by impaired respiratory burst activity in phagocytes due to a defective phagocytic nicotinamide adenine dinucleotide phosphate (NADPH) oxidase. In Western countries autosomal-recessive p47(phox)-subunit deficiency represents the second largest CGD patient cohort with unique genetics, as the vast majority of p47(phox) CGD patients carries ?GT deletion in exon two of the NCF1 gene. The established PLB-985 NCF1 ?GT cell line reflects the most frequent form of p47(phox)-deficient CGD genetically and functionally. It can be differentiated to granulocytes efficiently, what creates an attractive alternative to currently used iPSC models for rapid testing of novel gene therapy approaches.

Journal: Scientific reports
DOI: 10.1038/srep44187
Year: 2017

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