Mitotic bookmarking redundancy by nuclear receptors mediates robust post-mitotic reactivation of the pluripotency network
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PROVIDER: PRJNA909301 | ENA |
REPOSITORIES: ENA
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Project description:Mitotic bookmarking transcription factors (TFs) are thought to mediate rapid and accurate post-mitotic gene reactivation. However, the loss of individual bookmarking TFs often leads to the deregulation of only a small proportion of their mitotic targets, raising doubts on the significance and importance of their bookmarking function. Here, we used targeted proteomics of the mitotic bookmarking TF ESRRB, an orphan nuclear receptor, to discover an unexpected redundancy among members of the protein superfamily of nuclear receptors. Focusing on the nuclear receptor NR5A2, which together with ESRRB is essential in maintaining pluripotency in mouse embryonic stem cells, we demonstrate conjoint bookmarking activity of both factors on promoters and enhancers of a large fraction of active genes, particularly the most rapidly and strongly reactivated ones. Upon fast and simultaneous degradation of both factors during mitotic exit, hundreds of mitotic targets of ESRRB/NR5A2, including key players of the pluripotency network, display attenuated transcriptional reactivation. We propose that redundancy in mitotic bookmarking TFs, especially nuclear receptors, confers robustness to the reestablishment of gene regulatory networks after mitosis.
2023-11-20 | PXD038950 | Pride
Project description:Mitotic bookmarking transcription factors (TFs) are thought to mediate rapid and accurate post-mitotic gene reactivation. However, the loss of individual bookmarking TFs often leads to the deregulation of only a small proportion of their mitotic targets, raising doubts on the significance and importance of their bookmarking function. Here, we used targeted proteomics of the mitotic bookmarking TF ESRRB, an orphan nuclear receptor, to discover an unexpected redundancy among members of the protein superfamily of nuclear receptors. Focusing on the nuclear receptor NR5A2, which together with ESRRB is essential in maintaining pluripotency in mouse embryonic stem cells, we demonstrate conjoint bookmarking activity of both factors on promoters and enhancers of a large fraction of active genes, particularly the most rapidly and strongly reactivated ones. Upon fast and simultaneous degradation of both factors during mitotic exit, hundreds of mitotic targets of ESRRB/NR5A2, including key players of the pluripotency network, display attenuated transcriptional reactivation. We propose that redundancy in mitotic bookmarking TFs, especially nuclear receptors, confers robustness to the reestablishment of gene regulatory networks after mitosis.
2022-12-06 | GSE220253 | GEO
Project description:Mitotic bookmarking by CTCF and fast post-mitotic gene reactivation in ES cells
| PRJNA807661 | ENA
Project description:TBP in mitotic bookmarking and reactivation of transcription [ChIP-Seq]
| PRJNA432433 | ENA
Project description:HNF1B (Hepatocyte Nuclear Factor 1-Beta) is a POU-homeobox transcription factor expressed in kidney and frequently mutated in patients suffering from Congenital Anomalies of the Kidney and the Urinary Tract (CAKUT). HNF1B is a bookmarking factor, able to bind mitotic chromatin and necessary for the post-mitotic reactivation of gene expression. In order to characterize the molecular functions of HNF1B as a bookmarking factor, we performed ChIPseq on asynchronous and mitotic renal cells. We developed a novel ChIP method with a non-aqueous crosslinking (NAQC) to circumvent the well-known artefactual effects of formaldehyde crosslinking of mitotic chromosomes. NAQC-ChIP allowed the retention of the mitotic signal that was lost with a regular ChIP. With this novel methodology, we show that the vast majority HNF1B binding sites detected in asynchronous cells are also bound in mitosis.
2024-10-01 | GSE245086 | GEO
Project description:HNF1B (Hepatocyte Nuclear Factor 1-Beta) is a POU-homeobox transcription factor expressed in kidney and frequently mutated in patients suffering from Congenital Anomalies of the Kidney and the Urinary Tract (CAKUT). HNF1B is a bookmarking factor, able to bind mitotic chromatin and necessary for the post-mitotic reactivation of gene expression. In order to characterize the molecular functions of HNF1B as a bookmarking factor, we performed ChIPseq on asynchronous and mitotic renal cells. We developed a novel ChIP method with a non-aqueous crosslinking (NAQC) to circumvent the well-known artefactual effects of formaldehyde crosslinking of mitotic chromosomes. NAQC-ChIP allowed the retention of the mitotic signal that was lost with a regular ChIP. With this novel methodology, we show that the vast majority HNF1B binding sites detected in asynchronous cells are also bound in mitosis.
2024-10-01 | GSE245072 | GEO
Project description:HNF1B (Hepatocyte Nuclear Factor 1-Beta) is a POU-homeobox transcription factor expressed in kidney and frequently mutated in patients suffering from Congenital Anomalies of the Kidney and the Urinary Tract (CAKUT). HNF1B is a bookmarking factor, able to bind mitotic chromatin and necessary for the post-mitotic reactivation of gene expression. In order to characterize the molecular functions of HNF1B as a bookmarking factor, we performed ChIPseq on asynchronous and mitotic renal cells. We developed a novel ChIP method with a non-aqueous crosslinking (NAQC) to circumvent the well-known artefactual effects of formaldehyde crosslinking of mitotic chromosomes. NAQC-ChIP allowed the retention of the mitotic signal that was lost with a regular ChIP. With this novel methodology, we show that the vast majority HNF1B binding sites detected in asynchronous cells are also bound in mitosis.
2024-10-01 | GSE245071 | GEO
Project description:HNF1B (Hepatocyte Nuclear Factor 1-Beta) is a POU-homeobox transcription factor expressed in kidney and frequently mutated in patients suffering from Congenital Anomalies of the Kidney and the Urinary Tract (CAKUT). HNF1B is a bookmarking factor, able to bind mitotic chromatin and necessary for the post-mitotic reactivation of gene expression. In order to characterize the molecular functions of HNF1B as a bookmarking factor, we performed ChIPseq on asynchronous and mitotic renal cells. We developed a novel ChIP method with a non-aqueous crosslinking (NAQC) to circumvent the well-known artefactual effects of formaldehyde crosslinking of mitotic chromosomes. NAQC-ChIP allowed the retention of the mitotic signal that was lost with a regular ChIP. With this novel methodology, we show that the vast majority HNF1B binding sites detected in asynchronous cells are also bound in mitosis.
2024-10-01 | GSE245070 | GEO
Project description:For cells to initiate and sustain a differentiated state, it is necessary that a “memory” of this state is transmitted through mitosis to the daughter cells. Mammalian SWItch/ Sucrose Non- Fermentable (SWI/SNF) complexes, also called Brg1/ Brg- associated factors (BAF), control cell identity by modulating chromatin architecture to regulate gene expression, but whether they participate in cell fate memory is unclear. Here, we provide evidence that subunits of SWI/SNF act as mitotic bookmarks to safeguard cell identity during cell division. The SWI/SNF core subunits SMARCE1 and SMARCB1 are displaced from enhancers but bound on promoters during mitosis and we show that this binding is required for appropriate reactivation of bound genes after mitotic exit. Ablation of SMARCE1 during a single mitosis in mouse embryonic stem cells is sufficient to disrupt gene expression, impair the occupancy of several established bookmarks at a subset of their targets, and cause aberrant neural differentiation. Thus, SWI/SNF subunit SMARCE1 plays a mitotic bookmarking role and is essential for heritable epigenetic fidelity during transcriptional reprogramming.
2023-03-18 | GSE189563 | GEO
Project description:Mitotic bookmarking by SWI/SNF subunits
| PRJNA783609 | ENA