Generation of a dual edited human induced pluripotent stem cell Myl7-GFP reporter line with inducible CRISPRi/dCas9


Temporal regulation of CRISPRi activity is critical for genetic screens. Here, we present an inducible CRISPRi platform enabling selection of iPSC-derived cardiomyocytes and reversible gene knockdown. We targeted a doxycycline-inducible dCas9-KRAB-mCherry cassette into the AAVS1 locus in an MYL7-mGFP reporter iPSC line. A clone with bi-allelic integration displayed minimally leaky CRISPRi activity and strong expression upon addition of doxycycline in iPSCs, iPSC-derived cardiomyocytes, and multilineage differentiated cells. The CRISPRi activity was validated by targeting the MYOCD gene in iPSC cardiomyocytes. In summary, we developed a robust inducible CRISPRi platform to interrogate gene function in human iPSC-derived cardiomyocytes and other cells. Copyright © 2022 The Authors. Published by Elsevier B.V. All rights reserved.

Authors Metzl-Raz E, Bharucha N, Arthur Ataam J, Gavidia AA, Greenleaf WJ, Karakikes I
Journal Stem cell research
Publication Date 2022 May;61:102754
PubMed 35325819
DOI 10.1016/j.scr.2022.102754

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