LincU Preserves Naive Pluripotency by Restricting ERK Activity in Embryonic Stem Cells [knockdown]
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PROVIDER: PRJNA420039 | ENA |
REPOSITORIES: ENA
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Project description:LincU Preserves Naive Pluripotency by Restricting ERK Activity in Embryonic Stem Cells
| PRJNA420038 | ENA
Project description:LincU Preserves Naive Pluripotency by Restricting ERK Activity in Embryonic Stem Cells [overexpression]
| PRJNA420040 | ENA
Project description:While the functional roles of long non-coding RNAs (lncRNAs) have been increasingly identified, few lncRNAs that control the naive state of embryonic stem cells (ESCs) are known. Here, we report a naive-state-associated lncRNA, lincU, which is intrinsically activated by NANOG in naive mESCs. LincU-deficient mESCs exhibit a primed-like pluripotent state and potentiate the transition from naive state to primed state, whereas ectopic lincU expression maintains mESCs in the naive state. Mechanistically, we demonstrate that lincU directly binds and stabilizes the DUSP9 protein, an ERK-specific phosphatase, and then constitutively inhibits the ERK1/2 signaling pathway, which critically contributes to maintenance of the naive state. Importantly, we reveal the functional role of lincU to be evolutionarily conserved in human. Our findings thus unveil lincU as a conserved lncRNA that intrinsically restricts MAPK/ERK activity and maintains the naive state of ESCs.
2018-06-20 | GSE107417 | GEO
Project description:While the functional roles of long non-coding RNAs (lncRNAs) have been increasingly identified, few lncRNAs that control the naive state of embryonic stem cells (ESCs) are known. Here, we report a naive-state-associated lncRNA, lincU, which is intrinsically activated by NANOG in naive mESCs. LincU-deficient mESCs exhibit a primed-like pluripotent state and potentiate the transition from naive state to primed state, whereas ectopic lincU expression maintains mESCs in the naive state. Mechanistically, we demonstrate that lincU directly binds and stabilizes the DUSP9 protein, an ERK-specific phosphatase, and then constitutively inhibits the ERK1/2 signaling pathway, which critically contributes to maintenance of the naive state. Importantly, we reveal the functional role of lincU to be evolutionarily conserved in human. Our findings thus unveil lincU as a conserved lncRNA that intrinsically restricts MAPK/ERK activity and maintains the naive state of ESCs.
2018-06-20 | GSE107416 | GEO
Project description:Although the functional roles of long noncoding RNAs (lncRNAs) have been increasingly identified, few lncRNAs that control the naïve state of embryonic stem cells (ESCs) are known. Here, we report a naïve-state-associated lncRNA, LincU, which is intrinsically activated by Nanog in mESCs. LincU-deficient mESCs exhibit a primed-like pluripotent state and potentiate the transition from the naïve state to the primed state, whereas ectopic LincU expression maintains mESCs in the naïve state. Mechanistically, we demonstrate that LincU binds and stabilizes the DUSP9 protein, an ERK-specific phosphatase, and then constitutively inhibits the ERK1/2 signaling pathway, which critically contributes to maintenance of the naïve state. Importantly, we reveal the functional role of LincU to be evolutionarily conserved in human. Therefore, our findings unveil LincU as a conserved lncRNA that intrinsically restricts MAPK/ERK activity and maintains the naïve state of ESCs.
| S-EPMC6092693 | biostudies-other
Project description:Pluripotency can be maintained in the naïve state through manipulation of ERK and WNT signalling (2i), shielding embryonic stem cells (ESCs) from inductive cues. Alternatively, inhibiting CDK8/19 (CDK8/19i), a repressor of the Mediator co-activator complex, directly stimulates super-enhancer activity, and was recently shown to stabilize cells in a functional state that resembles naïve pluripotency. Naïve ESCs exhibit important epigenetic, transcriptional and metabolic features. However, our understanding on how these regulatory layers are inter-connected to promote the naive state is in progress. To fill this gap, here we used mass spectrometry to describe the dynamic molecular events (i.e. phosphoproteome, proteome and metabolome) executed by 2i and CDK8/19i, as they transition cell identity into naïve pluripotency. We observed rapid proteomic reprogramming, revealing widespread commonalities, and some important differences, between these two approaches, suggesting a largely over-lapping mechanism. CDK8/19i acts directly on the control of the transcriptional machinery, which elicits a rapid and direct activation of key identity genes including those that maintain the naïve program. Additional molecular changes in 2i are achieved by phosphorylation of critical downstream effectors that reinforce the naïve transcriptional circuitry while repressing factors from the more-differentiated formative and primed states. Comparing transcriptomic and proteomic changes, we found that post-transcriptional de-repression is a major feature of naïve pluripotency conferred by both 2i and CDK8/19i, and this may support the enhanced mitochondrial capacity of naive cells. Furthermore, at the level of metabolome, while 2i- and CDK8/19i-treated cells share similar aspects in one-carbon metabolism and beta-oxidation, in other regards they are divergent, a feature which may explain their differences in DNA methylation. These datasets provide a valuable resource for exploring the molecular mechanisms underlying pluripotency and cell identity transitions.
2021-02-10 | PXD018694 | Pride
Project description:This SuperSeries is composed of the SubSeries listed below.
2018-06-20 | GSE107418 | GEO
Project description:Mouse embryonic stem cells were maintained in minimal and chemically-defined culture conditions supporting naive pluripotency. Inhibitors of the Gsk3 (CHIR99021) and Mek/Erk (PD0325901) pathways were withdrawn, cultures maintained for 24 hours, and subsequently sorted by flow cytometry based on fluorescence of a short-half-life Rex1(Zfp42)::GFP reporter into two populations: Rex1-high cells, functionally capable of reversion to naive pluripotency, and Rex1-low cells that have exited the naive state.
2017-02-22 | E-MTAB-5304 | biostudies-arrayexpress
Project description:Mouse embryonic stem cells (mESCs) are in naive pluripotency that represents the ground state of development, from which all cells in the mouse embryo are derived. In contrast, human embryonic stem cells (hESCs) are in a primed state of pluripotency with many different properties. Despite intense efforts to generate naive human pluripotent stem cells (hPSCs), it has not been possible to derive naive hPSCs without relying on transgene overexpression or chemicals. Here, we show that a transient treatment with Torin1, a selective inhibitor of mTOR, converted hPSCs from primed to naive pluripotency. The naive hPSCs were maintained in the same condition as mESCs in defined media with 2iLI (MEK inhibitor, GSK3b inhibitor, LIF and Insulin). Like mESCs, they exhibited high clonal efficiency, rapid cell proliferation, active mitochondrial respiration, X chromosome activation, DNA hypomethylation, and transcriptomes similar to those of human blastocysts than primed hESCs. Most importantly, the naive hPSCs significantly contributed to mouse embryos when transferred to mouse blastocysts. mTor inhibition induced nuclear translocation of TFE3, a critical transcription factor at the interplay of autophagy and pluripotency. TFE3 with mutated nuclear localization signal blocked the conversion from primed to naive pluripotency. It appears that by mimicking diapause at the cellular level, naive pluripotency in human can be readily attained from primed hPSCs, thus establishing the unified ground state of pluripotency in mammals.
2020-05-13 | GSE102031 | GEO
Project description:Mouse embryonic stem cells (mESCs) are in naive pluripotency that represents the ground state of development, from which all cells in the mouse embryo are derived. In contrast, human embryonic stem cells (hESCs) are in a primed state of pluripotency with many different properties. Despite intense efforts to generate naive human pluripotent stem cells (hPSCs), it has not been possible to derive naive hPSCs without relying on transgene overexpression or chemicals. Here, we show that a transient treatment with Torin1, a selective inhibitor of mTOR, converted hPSCs from primed to naive pluripotency. The naive hPSCs were maintained in the same condition as mESCs in defined media with 2iLI (MEK inhibitor, GSK3b inhibitor, LIF and Insulin). Like mESCs, they exhibited high clonal efficiency, rapid cell proliferation, active mitochondrial respiration, X chromosome activation, DNA hypomethylation, and transcriptomes similar to those of human blastocysts than primed hESCs. Most importantly, the naive hPSCs significantly contributed to mouse embryos when transferred to mouse blastocysts. mTor inhibition induced nuclear translocation of TFE3, a critical transcription factor at the interplay of autophagy and pluripotency. TFE3 with mutated nuclear localization signal blocked the conversion from primed to naive pluripotency. It appears that by mimicking diapause at the cellular level, naive pluripotency in human can be readily attained from primed hPSCs, thus establishing the unified ground state of pluripotency in mammals.
2020-05-13 | GSE87452 | GEO