Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA132325 | ENA |
REPOSITORIES: ENA
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Project description:Histone methylation has an important role in transcriptional regulation. However, unlike H3K4 and H3K9 methylation, the role of H4K20 mono-methylation (H4K20me-1) in transcriptional regulation remains unclear. Here we show that Wnt3a specifically stimulates H4K20 mono-methylation at TBE (TCF-binding element) via the histone methylase SET8. Additionally, SET8 is crucial for activation of the Wnt reporter gene and target genes in both mammalian cells and zebrafish. Furthermore, SET8 interacts with TCF4/LEF1 directly, and this interaction is regulated by Wnt3a. Therefore, we conclude that SET8 is a Wnt signaling mediator and is recruited by LEF1/TCF4 to regulate the transcription of Wnt-activated genes, possibly via H4K20 mono-methylation at the target gene promoters. Our findings also indicate that H4K20me-1 is a marker for gene transcription activation, at least in canonical Wnt signaling. This chip experiment was carried out to find out how many genes would be regulated by SET8 after Wnt3a CM stimulated HEK293 cells. Total RNA was extracted from HEK293 cells after siRNA transfection (control or SET8 shRNA) for about 40 hours and then induced with Control or Wnt3a CM for 7 hours using TRIzol (Invitrogen) and the RNeasy kit (Qiagen). Three pairs of samples: si-control + control CM / si-control + Wnt3a CM 7 h / si-SET8 + Wnt3a CM. Samples were amplified and labeled using a NimbleGen One-Color DNA Labeling Kit.
2010-12-29 | E-GEOD-24708 | biostudies-arrayexpress
Project description:Histone methylation has an important role in transcriptional regulation. However, unlike H3K4 and H3K9 methylation, the role of H4K20 mono-methylation (H4K20me-1) in transcriptional regulation remains unclear. Here we show that Wnt3a specifically stimulates H4K20 mono-methylation at TBE (TCF-binding element) via the histone methylase SET8. Additionally, SET8 is crucial for activation of the Wnt reporter gene and target genes in both mammalian cells and zebrafish. Furthermore, SET8 interacts with TCF4/LEF1 directly, and this interaction is regulated by Wnt3a. Therefore, we conclude that SET8 is a Wnt signaling mediator and is recruited by LEF1/TCF4 to regulate the transcription of Wnt-activated genes, possibly via H4K20 mono-methylation at the target gene promoters. Our findings also indicate that H4K20me-1 is a marker for gene transcription activation, at least in canonical Wnt signaling. This chip experiment was carried out to find out how many genes would be regulated by SET8 after Wnt3a CM stimulated HEK293 cells.
2010-12-29 | GSE24708 | GEO
Project description:In mammalian cells, SET8 mediated Histone H4 Lys 20 monomethylation (H4K20me1) has been implicated in regulating mitotic condensation, DNA replication, DNA damage response, and gene expression. Here we show SET8, the only known enzyme for H4K20me1 is post-translationally poly ADP-ribosylated by PARP1 on lysine residues. PARP1 interacts with SET8 in a cell cycle- dependent manner. Poly ADP-ribosylation on SET8 renders it catalytically compromised and it undergoes degradation via ubiquitylation pathway. Knockdown of PARP1 shifted the relative dynamic equilibrium of H4K20me2 to H4K20me3 in cells. Overexpression or knockdown of PARP1 led to aberrant H4K20me1 domains genome-wide, impacting Wnt signaling pathways genes and transcription factor binding site enrichment. Therefore, SET8 mediated chromatin remodeling in mammalian cells are influenced by poly ADP-ribosylation by PARP1.
2022-11-17 | GSE188744 | GEO
Project description:To study the role of Histone H4 lysine 20 mono- and tri-methylation (H4K20me1, H4K20me3) in relationship to chromatin accessibility and gene expression, we report the application of high-throughput profiling of these marks in Human Osteosarcoma U2OS and Mouse Fibroblast (MEF) cells with Set8 knockdown or control siRNA treatment. We find that H4K20me1 contributes to the open chromatin structure at active genes.
2021-06-04 | GSE156216 | GEO
Project description:To study the role of Histone H4 lysine 20 mono- and tri-methylation (H4K20me1, H4K20me3) in relationship to chromatin accessibility and gene expression, we report the application of high-throughput profiling of these marks in synchronized and asynchronous Human Osteosarcoma U2OS and asynchronous Mouse Fibroblast (MEF) cells with Set8 knockdown or control siRNA treatment. We find that H4K20me1 contributes to the open chromatin structure at active genes.
2021-06-04 | GSE173313 | GEO
Project description:To study the role of Histone H4 lysine 20 mono- and tri-methylation (H4K20me1, H4K20me3) in relationship to chromatin accessibility and gene expression, we report the application of high-throughput profiling of these marks in synchronized and asynchronous Human Osteosarcoma U2OS and asynchronous Mouse Fibroblast (MEF) cells with Set8 knockdown or control siRNA treatment. We find that H4K20me1 contributes to the open chromatin structure at active genes.
2021-06-04 | GSE156215 | GEO
Project description:Microtubules are critical for mitosis, cell motility, and protein and organelle transport, and are a validated target for anticancer drugs. However, tubulin regulation and recruitment in these cellular processes is less understood. Post-translational modifications of tubulin are proposed to regulate microtubule functions and dynamics. Although many such modifications have been investigated, tubulin methylations and enzymes responsible for methylation have only recently begun to be described. Here we report that N-lysine methyl transferase KMT5A (SET8/PR‑Set7), which methylates histone H4K20, also methylates α‑tubulin. Furthermore, the transcription factor LSF binds both tubulin and SET8, and enhances α-tubulin methylation in vitro, countered by FQI1, a specific small molecule inhibitor of LSF. Thus, the three SET8, LSF, and tubulin, all essential for mitotic progression, interact with each other. Overall, these results point to dual functions for both SET8 and LSF not only in chromatin regulation, but also for cytoskeletal modification.
2020-02-28 | PXD014257 | Pride
Project description:Histone H4 Lys 20 mono-methylation of the CENP-A nucleosome is essential for kinetochore assembly
| PRJDB2479 | ENA
Project description:Histone H4 Lys 20 mono-methylation of the CENP-A nucleosome is essential for kinetochore assembly
| PRJDB2478 | ENA
Project description:Histone H4 Lys 20 mono-methylation of the CENP-A nucleosome is essential for kinetochore assembly
| PRJDB2482 | ENA