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Lysosomal Signaling Licenses Embryonic Stem Cell Differentiation via Inactivation of Tfe3

  • Florian Villegas
  • , Daphné Lehalle
  • , Daniela Mayer
  • , Melanie Rittirsch
  • , Michael B. Stadler
  • , Marietta Zinner
  • , Daniel Olivieri
  • , Pierre Vabres
  • , Laurence Duplomb-Jego
  • , Eveline S.J.M. De Bont
  • , Yannis Duffourd
  • , Floor Duijkers
  • , Magali Avila
  • , David Geneviève
  • , Nada Houcinat
  • , Thibaud Jouan
  • , Paul Kuentz
  • , Klaske D. Lichtenbelt
  • , Christel Thauvin-Robinet
  • , Judith St-Onge
  • Julien Thevenon, Koen L.I. van Gassen, Mieke van Haelst, Silvana van Koningsbruggen, Daniel Hess, Sebastien A. Smallwood, Jean Baptiste Rivière, Laurence Faivre, Joerg Betschinger*
*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

Self-renewal and differentiation of pluripotent murine embryonic stem cells (ESCs) is regulated by extrinsic signaling pathways. It is less clear whether cellular metabolism instructs developmental progression. In an unbiased genome-wide CRISPR/Cas9 screen, we identified components of a conserved amino-acid-sensing pathway as critical drivers of ESC differentiation. Functional analysis revealed that lysosome activity, the Ragulator protein complex, and the tumor-suppressor protein Folliculin enable the Rag GTPases C and D to bind and seclude the bHLH transcription factor Tfe3 in the cytoplasm. In contrast, ectopic nuclear Tfe3 represses specific developmental and metabolic transcriptional programs that are associated with peri-implantation development. We show differentiation-specific and non-canonical regulation of Rag GTPase in ESCs and, importantly, identify point mutations in a Tfe3 domain required for cytoplasmic inactivation as potentially causal for a human developmental disorder. Our work reveals an instructive and biomedically relevant role of metabolic signaling in licensing embryonic cell fate transitions.

Original languageEnglish
Pages (from-to)257-270.e8
JournalCell Stem Cell
Volume24
Issue number2
DOIs
Publication statusPublished - 7 Feb 2019

Keywords

  • developmental disorder
  • differentiation
  • embryonic stem cell
  • Flcn
  • mTOR
  • pluripotency
  • Rag GTPases
  • Ragulator
  • Tfe3

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