Syndromic RNA polymerase II insufficiency: Generation of a human induced pluripotent stem cell line (UUIGPi002A-5) with a heterozygous disruption of POLR2A


Heterozygous variants in POLR2A, encoding the largest subunit of RNA polymerase II, cause severe neurodevelopmental and multisystem abnormalities in humans. Using CRISPR/Cas9 we generated the human iPSC line KICRi002A-5 with a heterozygous truncating 4 bp insertion in exon 5 of the POLR2A gene. Analysis using qRT-PCR confirmed reduced POLR2A mRNA in KICRi002A-5 vs. the isogenic WT iPSC line. The edited iPSC line expressed pluripotency markers and exhibited differentiation capacity into the three germ layers. Assessment of genomic integrity revealed a normal karyotype and OFF-target editing was excluded. The iPSC line KICRi002A-5 provides a useful resource to study mechanisms underlying developmental defects caused by RBP1 insufficiency. Copyright © 2021 The Author(s). Published by Elsevier B.V. All rights reserved.

Authors Schuster J, de Guidi C, Fatima A, Sobol M, Dahl N
Journal Stem cell research
Publication Date 2021 Dec;57:102577
PubMed 34688129
DOI 10.1016/j.scr.2021.102577

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