Generation of a homozygous CIITA knockout iPS cell line using the CRISPR-Cas9 system


Human induced pluripotent stem cells (iPSCs) have great promise in regenerative medicine. However, several limitations, including immune-incompatibility, have raised concerns regarding their clinical application. Recent studies have shown that human iPSCs and their derivatives lose their immunogenicity when major histocompatibility complex (MHC) class I and II genes are inactivated and CD47 is over-expressed. In this study, we used CRISPR-Cas9 technology to generate an isogenic iPSC line with a homozygous frameshift mutation in the MHC II transactivator (CIITA) gene. The CIITA-/- iPSCs exhibit typical morphology of pluripotent cells, normal karyotype, expression of pluripotency markers and differentiation capacity in the three germ layers. Copyright © 2021 The Authors. Published by Elsevier B.V. All rights reserved.

Authors Romano E, Trionfini P, Giampietro R, Benigni A, Tomasoni S
Journal Stem cell research
Publication Date 2021 Oct 18;57:102580
PubMed 34688128
DOI 10.1016/j.scr.2021.102580

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