Feeder-free culture of human pluripotent stem cells drives MDM4-mediated gain of chromosome 1q

Dylan Stavish, Christopher J. Price, Gabriele Gelezauskaite, Haneen Alsehli, Kimberly A. Leonhard, Seth M. Taapken, Erik M. McIntire, Owen Laing, Bethany M. James, Jack J. Riley, Johanna Zerbib, Duncan Baker, Amy L. Harding, Lydia H. Jestice, Thomas F. Eleveld, Ad J.M. Gillis, Sanne Hillenius, Leendert H.J. Looijenga, Paul J. Gokhale, Uri Ben-DavidTenneille E. Ludwig, Ivana Barbaric

Research output: Contribution to journalArticlepeer-review

Abstract

Culture-acquired variants in human pluripotent stem cells (hPSCs) hinder their applications in research and clinic. However, the mechanisms that underpin selection of variants remain unclear. Here, through analysis of comprehensive karyotyping datasets from over 23,000 hPSC cultures of more than 1,500 lines, we explored how culture conditions shape variant selection. Strikingly, we identified an association of chromosome 1q gains with feeder-free cultures and noted a rise in its prevalence in recent years, coinciding with increased usage of feeder-free regimens. Competition experiments of multiple isogenic lines with and without a chromosome 1q gain confirmed that 1q variants have an advantage in feeder-free (E8/vitronectin), but not feeder-based, culture. Mechanistically, we show that overexpression of MDM4, located on chromosome 1q, drives variants’ advantage in E8/vitronectin by alleviating genome damage-induced apoptosis, which is lower in feeder-based conditions. Our study explains condition-dependent patterns of hPSC aberrations and offers insights into the mechanisms of variant selection.
Original languageEnglish
Pages (from-to)1217-1232
Number of pages16
JournalStem Cell Reports
Volume19
Issue number8
DOIs
Publication statusPublished - 13 Aug 2024

Keywords

  • MDM4
  • culture conditions
  • genetic changes
  • genome damage
  • human pluripotent stem cells
  • Cell Line
  • Cell Culture Techniques/methods
  • Pluripotent Stem Cells/metabolism
  • Humans
  • Cells, Cultured
  • Cell Cycle Proteins/metabolism
  • Proto-Oncogene Proteins/metabolism
  • Apoptosis/genetics
  • Feeder Cells/cytology
  • Chromosomes, Human, Pair 1/genetics

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