Generation of integration-free induced pluripotent stem cell line (KSCBi024-A) from patients with down syndrome

Summary

We established an integration-free human induced pluripotent stem cell (hiPSC) line, KSCBi024-A, from peripheral blood mononuclear cells (PBMCs) of a 13-year-old male with Down syndrome (trisomy 21). Cytogenetic analysis confirmed a 46,XY,i(21)(q10) karyotype, indicating an isochromosome 21q. Reprogramming was carried out using non-integrating episomal vectors, and the resulting hiPSCs exhibited typical pluripotent stem cell morphology and expressed core pluripotency markers (OCT4, NANOG, SOX2) at levels comparable to human embryonic stem cells. The line demonstrated trilineage differentiation potential in vitro and was free of mycoplasma contamination. KSCBi024-A represents a useful resource for modeling trisomy 21-associated cellular phenotypes and is available through the Korea National Stem Cell Bank. Copyright © 2026 The Authors. Published by Elsevier B.V. All rights reserved.

Authors Im YS, Kim YO, Cho SJ
Journal Stem cell research
Publication Date 2026 Jun 11;95:104031
PubMed 42341614
DOI 10.1016/j.scr.2026.104031

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