Generation of isogenic Propionyl-CoA carboxylase beta subunit (PCCB) deficient induced pluripotent stem cell lines

Abstract

Propionic acidemia (PA) is an autosomal recessive metabolic liver disease caused by defects in propionyl CoA carboxylase. Propionyl CoA carboxylase is a dodecameric enzyme consisting of multiple copies of alpha and beta subunits encoded by the PCCA and PCCB genes. Mutations in either PCCA or PCCB can cause the disease. PA is categorized as a rare disease and accessing patients' cells to study the disease has been challenging. Here we describe the generation of two isogenic induced pluripotent stem cell (iPSC) lines in which exon 2 of the PCCB gene was mutated using CRISPR Cas9 gene editing. The PCCB−/− iPSCs express characteristic pluripotency proteins, are competent to differentiate into cell lineages from each of the three embryonic germ layers and display a normal karyotype.