Gene Correction of iPSCs from a Wiskott-Aldrich Syndrome Patient Normalizes the Lymphoid Developmental and Functional Defects

Tamara J. Laskowski, Yasmine Van Caeneghem, Rasoul Pourebrahim, Chao Ma, Zhenya Ni, Zita Garate, Ana M. Crane, Xuan Shirley Li, Wei Liao, Manuel Gonzalez-Garay, Jose Carlos Segovia, David E. Paschon, Edward J. Rebar, Michael C. Holmes, Dan Kaufman, Bart Vandekerckhove, Brian R. Davis

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Wiskott-Aldrich syndrome (WAS) is an X-linked primary immunodeficiency disease caused by mutations in the gene encoding the WAS protein (WASp). Here, induced pluripotent stem cells (iPSCs) were derived from a WAS patient (WAS-iPSC) and the endogenous chromosomal WAS locus was targeted with a wtWAS-2A-eGFP transgene using zinc finger nucleases (ZFNs) to generate corrected WAS-iPSC (cWAS-iPSC). WASp and GFP were first expressed in the earliest CD34+CD43+CD45 hematopoietic precursor cells and later in all hematopoietic lineages examined. Whereas differentiation to non-lymphoid lineages was readily obtained from WAS-iPSCs, in vitro T lymphopoiesis from WAS-iPSC was deficient with few CD4+CD8+ double-positive and mature CD3+ T cells obtained. T cell differentiation was restored for cWAS-iPSCs. Similarly, defects in natural killer cell differentiation and function were restored on targeted correction of the WAS locus. These results demonstrate that the defects exhibited by WAS-iPSC-derived lymphoid cells were fully corrected and suggests the potential therapeutic use of gene-corrected WAS-iPSCs.

Original languageEnglish (US)
Pages (from-to)139-148
Number of pages10
JournalStem Cell Reports
Volume7
Issue number2
DOIs
StatePublished - Aug 9 2016

Keywords

  • T cells
  • genome editing
  • immune deficiency
  • induced pluripotent stem cells

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