Chip-Seq Raw data in LSD1 WT and KO mouse ES cells
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB78609 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| ERR13448279_1.fastq.gz | Fastqsanger.gz | |||
| ERR13448279_2.fastq.gz | Fastqsanger.gz |
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Project description:Lysine-specific histone demethylase 1 (LSD1), which demethylates mono- or di- methylated histone H3 on lysine 4 (H3K4me1/2), is essential for early embryogenesis and development. Here we show that LSD1 is dispensable for embryonic stem cell (ESC) self-renewal but is required for ESC growth and differentiation. Reexpression of a catalytically-dead LSD1 (LSD1MUT) recovers the proliferation capability of ESCs, yet the enzymatic activity of LSD1 is essential to ensure proper differentiation. Indeed, a gain of H3K4me1 in Lsd1 knockout (KO) ESCs does not lead to major changes in global gene expression programs related to stemness. However, ablation of LSD1 but not LSD1MUT results in decreased DNMT1 and UHRF1 proteins coupled to global hypomethylation. We show that both LSD1 and LSD1MUT control protein stability of UHRF1 and DNMT1 through interaction with the ubiquitin-specific peptidase 7 (USP7) and, consequently, inhibiting DNMT1 and UHRF1 ubiquitylation. Our studies elucidate for the first time a novel mechanism by which the scaffolding function of LSD1 controls DNA methylation in ESCs.
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Project description:To study the epigenetic regulation of intestinal epithelium we focus on the role of chromatin modulators. Lysine-specific histone demethylase 1a (KDM1A, LSD1) is one of the enzymes that can erase the H3K4me1/2 mark. To assess the role of LSD1 in intestinal epithelium we studied wild type (WT) (Villin-Cre -; Lsd1f/f) and intestinal-epithelial-specific knock-out (KO) (Villin-Cre+; Lsd1f/f) mice. We found that KO mice completely lack Paneth cells, and have altered stem cell characteristics compared to WT littermates. To assess genome-wide H3K4me1/2 levels in WT and KO small intestines, we sorted small intestinal crypt cells, fixed them, isolated chromatin, and performed ChIP using an H3K4me1 and an H3K4me2 antibody as described in the protocols.
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Project description:To study the epigenetic regulation of intestinal epithelium we focus on the role of chromatin modulators. Lysine-specific histone demethylase 1a (KDM1A, LSD1) is one of the enzymes that can erase the H3K4me1/2 mark. To assess the role of LSD1 in intestinal epithelium we studied wild type (WT) (Villin-Cre -; Lsd1f/f) and intestinal-epithelial-specific knock-out (KO) (Villin-Cre+; Lsd1f/f) mice. We found that KO mice completely lack Paneth cells, and have altered stem cell characteristics compared to WT littermates. To assess genome-wide ATAC levels in WT and KO small intestines, we isolated intestinal epithelium tissue from wild type mice and LSD1 KO mice. This tissue was digested to single cells and performed ATAC seq as described in the protocols.
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Project description:Lysine specific demethylase 1 (LSD1), which demethylates mono- and di- methylated histone H3-Lys4 as part of a complex including CoREST and histone deacetylases (HDAC), is essential for embryonic development in the mouse beyond e6.5 days. Here, we demonstrate that LSD1 expression and therefore function, is restricted to the epiblast of the post- implantation embryo. Conditional deletion of LSD1 in mouse embryonic stem (ES) cells, in vitro counterpart of the epiblast, revealed a reduction in CoREST protein, a subsequent decrease in associated HDAC activity and a global increase in Histone H3 Lys56 acetylation. Despite this biochemical perturbation, LSD1 deleted ES cells proliferate normally and retain stem cell characteristics. Loss of LSD1 causes the aberrant expression of 588 genes, including a number of transcription factors with roles in tissue development such as brachyury, Hoxb7, Hoxd8 and RARγ. Brachyury, a key-regulator of mesodermal differentiation, is a direct target gene of LSD1 and is over-expressed in e6.5 day Lsd1 genetrap embryos. Thus, LSD1 is required for the appropriate expression of key developmental regulators, via the stabilization of the LSD1/CoREST/HDAC complex, during early embryonic development. RNA samples from Lsd1Lox/Δ3 and Lsd1Δ3/Δ3 cells were compared, three biological replicates were performed.
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Project description:Lysine specific demethylase 1 (LSD1), which demethylates mono- and di- methylated histone H3-Lys4 as part of a complex including CoREST and histone deacetylases (HDAC), is essential for embryonic development in the mouse beyond e6.5 days. Here, we demonstrate that LSD1 expression and therefore function, is restricted to the epiblast of the post- implantation embryo. Conditional deletion of LSD1 in mouse embryonic stem (ES) cells, in vitro counterpart of the epiblast, revealed a reduction in CoREST protein, a subsequent decrease in associated HDAC activity and a global increase in Histone H3 Lys56 acetylation. Despite this biochemical perturbation, LSD1 deleted ES cells proliferate normally and retain stem cell characteristics. Loss of LSD1 causes the aberrant expression of 588 genes, including a number of transcription factors with roles in tissue development such as brachyury, Hoxb7, Hoxd8 and RARγ. Brachyury, a key-regulator of mesodermal differentiation, is a direct target gene of LSD1 and is over-expressed in e6.5 day Lsd1 genetrap embryos. Thus, LSD1 is required for the appropriate expression of key developmental regulators, via the stabilization of the LSD1/CoREST/HDAC complex, during early embryonic development.
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