Wnt Inhibition Facilitates RNA-Mediated Reprogramming of Human Somatic Cells to Naive Pluripotency

Nicholas Bredenkamp, Jian Yang, James Clarke, Giuliano Giuseppe Stirparo, Ferdinand von Meyenn, Sabine Dietmann, Duncan Baker, Rosalind Drummond, Yongming Ren, Dongwei Li, Chuman Wu, Maria Rostovskaya, Sarah Eminli-Meissner, Austin Smith, Ge Guo

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

In contrast to conventional human pluripotent stem cells (hPSCs) that are related to post-implantation embryo stages, naive hPSCs exhibit features of pre-implantation epiblast. Naive hPSCs are established by resetting conventional hPSCs, or are derived from dissociated embryo inner cell masses. Here we investigate conditions for transgene-free reprogramming of human somatic cells to naive pluripotency. We find that Wnt inhibition promotes RNA-mediated induction of naive pluripotency. We demonstrate application to independent human fibroblast cultures and endothelial progenitor cells. We show that induced naive hPSCs can be clonally expanded with a diploid karyotype and undergo somatic lineage differentiation following formative transition. Induced naive hPSC lines exhibit distinctive surface marker, transcriptome, and methylome properties of naive epiblast identity. This system for efficient, facile, and reliable induction of transgene-free naive hPSCs offers a robust platform, both for delineation of human reprogramming trajectories and for evaluating the attributes of isogenic naive versus conventional hPSCs.

Original languageEnglish
Pages (from-to)1083-1098
Number of pages16
JournalStem Cell Reports
Volume13
Issue number6
DOIs
StatePublished - Dec 10 2019

Keywords

  • RNA-mediated reprogramming
  • Wnt signaling
  • human pluripotent stem cells
  • human pre-implantation epiblast
  • induced pluripotent stem cells
  • molecular reprogramming
  • naive pluripotency

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