Abstract
To reveal how cells exit human pluripotency, we designed a CRISPR-Cas9 screen exploiting the metabolic and epigenetic differences between naïve and primed pluripotent cells. We identify the tumor suppressor, Folliculin(FLCN) as a critical gene required for the exit from human pluripotency. Here we show that FLCN Knock-out (KO) hESCs maintain the naïve pluripotent state but cannot exit the state since the critical transcription factor TFE3 remains active in the nucleus. TFE3 targets up-regulated in FLCN KO exit assay are members of Wnt pathway and ESRRB. Treatment of FLCN KO hESC with a Wnt inhibitor, but not ESRRB/FLCN double mutant, rescues the cells, allowing the exit from the naïve state. Using co-immunoprecipitation and mass spectrometry analysis we identify unique FLCN binding partners. The interactions of FLCN with components of the mTOR pathway (mTORC1 and mTORC2) reveal a mechanism of FLCN function during exit from naïve pluripotency.
Original language | English |
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Article number | 632 |
Pages (from-to) | 632 |
Journal | Nature Communications |
Volume | 10 |
Issue number | 1 |
DOIs | |
Publication status | Published - 7 Feb 2019 |
Keywords
- Basic Helix-Loop-Helix Leucine Zipper Transcription Factors/genetics
- CRISPR-Cas Systems/genetics
- Cell Line
- Estrone/genetics
- Humans
- Immunoprecipitation
- Mechanistic Target of Rapamycin Complex 1/genetics
- Mechanistic Target of Rapamycin Complex 2/genetics
- Proteomics
- Receptors, Estrogen/genetics
- Wnt Signaling Pathway/genetics