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Live cell monitoring of periodic gene expression in synchronous human cells identifies forkhead genes involved in cell cycle control

ABSTRACT: We report the genome wide DNA binding patterns of wild type FOXK1 in asynchronous HeLa cells using chromatin precipitation followed by high-throughput sequencing (ChIP-seq). We find that FOXK1 is bound to the promoter of a number of cell cycle genes including the E2F binding partner TFDP1. This study is the first reported study of FOXK1 binding on a genome-wide scale in HeLa cells.

ORGANISM(S): Homo sapiens

PROVIDER: GSE39138 | GEO | 2012/07/09

SECONDARY ACCESSION(S): PRJNA170078

REPOSITORIES: GEO

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Live cell monitoring of periodic gene expression in synchronous human cells identifies forkhead genes involved in cell cycle control

Project description:We report the genome wide DNA binding patterns of wild type FOXK1 in asynchronous HeLa cells using chromatin precipitation followed by high-throughput sequencing (ChIP-seq). We find that FOXK1 is bound to the promoter of a number of cell cycle genes including the E2F binding partner TFDP1. This study is the first reported study of FOXK1 binding on a genome-wide scale in HeLa cells. Chromatin precipitation

2012-07-09 | E-GEOD-39138 | biostudies-arrayexpress

Live-cell monitoring of periodic gene expression in synchronous human cells identifies Forkhead genes involved in cell cycle control.

Project description:We developed a system to monitor periodic luciferase activity from cell cycle-regulated promoters in synchronous cells. Reporters were driven by a minimal human E2F1 promoter with peak expression in G1/S or a basal promoter with six Forkhead DNA-binding sites with peak expression at G2/M. After cell cycle synchronization, luciferase activity was measured in live cells at 10-min intervals across three to four synchronous cell cycles, allowing unprecedented resolution of cell cycle-regulated gene expression. We used this assay to screen Forkhead transcription factors for control of periodic gene expression. We confirmed a role for FOXM1 and identified two novel cell cycle regulators, FOXJ3 and FOXK1. Knockdown of FOXJ3 and FOXK1 eliminated cell cycle-dependent oscillations and resulted in decreased cell proliferation rates. Analysis of genes regulated by FOXJ3 and FOXK1 showed that FOXJ3 may regulate a network of zinc finger proteins and that FOXK1 binds to the promoter and regulates DHFR, TYMS, GSDMD, and the E2F binding partner TFDP1. Chromatin immunoprecipitation followed by high-throughput sequencing analysis identified 4329 genomic loci bound by FOXK1, 83% of which contained a FOXK1-binding motif. We verified that a subset of these loci are activated by wild-type FOXK1 but not by a FOXK1 (H355A) DNA-binding mutant.

| S-EPMC3418304 | biostudies-literature

Identification of cell cycle-regulated genes periodically expressed in U2OS cells and their regulation by FOXM1 and E2F transcription factors [ChIP-seq]

Project description:We report the genome wide DNA binding patterns of wild type FOXM1 in asynchronous HeLa cells using chromatin precipitation followed by high-throughput sequencing (ChIP-seq). We find that FOXM1 is bound to the promoter of a number of cell cycle genes including PLK, AURKB, and CCNB1. FOXM1 ChIP-seq in asynchronous HeLa cells

2013-11-06 | E-GEOD-52098 | biostudies-arrayexpress

Comparative transcriptomic analysis of WT, FOXK1/2 KO, DKO cells and FOXK1 KO cells with reconstitution of several FOXK1 mutants

Project description:The goal of this study was to apply Next Generation Sequencing analyses to identify genes and pathways regulated by the FOXK1 and FOXK2 transcription factor in HeLa cells and to see whether reconstitution of FOXK1 WT and mutants can rescue the altered gene regulation in FOXK1 KO cells. Gene Ontology (GO) analysis did not uncover any dysregulated DNA damage–related pathways upon FOXKs KO. We found that cells reconstituted with any of the three FOXK1 mutants could largely rescue dysregulated gene expression in FOXK1 KO cells, similar to cells reconstituted with WT FOXK1. These suggesting that FOXK1's role in DNA damage response is not by direct transcriptional regulation of DNA damage related pathways and all the three FOXK1 mutants could not affect transcription.

2020-06-26 | GSE151029 | GEO

Identification of cell cycle-regulated genes periodically expressed in U2OS cells and their regulation by FOXM1 and E2F transcription factors [ChIP-seq]

2013-11-06 | GSE52098 | GEO

A species-specific nucleosomal signature defines a periodic distribution of amino acids in proteins

2015-04-10 | GSE52170 | GEO

A species-specific nucleosomal signature defines a periodic distribution of amino acids in proteins

Project description:Sequencing of mononucleosomal DNA during asynchronous mitosis in Schizosaccharomyces pombe, Schizosaccharomyces octosporus, Schizosaccharomyces japonicus and Saccharomyces cerevisiae Samples from mononucleosomal DNA from asynchronous mitosis of four species of budding (Saccharomyces cerevisiae W303-1a) and fission yeasts (S. pombe wild type 972h-, S. octosporus CBS1804, S. japonicus var. japonicus ade12- FY53) were sequenced (Illumina Genome Analyzer IIx and HiSeq 2500) using the single read and paired end protocol.

2015-04-10 | E-GEOD-52170 | biostudies-arrayexpress

RNA-seq of human embryonic stem cells H1 ESC cells and the differentiated NPC cells with FOXK1/2 and SIN3A knock down and the control condition.

Project description:In order to investigate the genome-wide binding profile of the forkhead transcription factor FOXK2 in human embryonic stem cells (ESCs) and downstream cell types, we generated the RNA-seq data with FOXK1/2 and SIN3A siRNA in H1 ESC cells and FOXK1/2 siRNA in the differentiated NPC cells.

2021-09-08 | E-MTAB-9639 | biostudies-arrayexpress

Epigenetic and transcriptional regulation of starvation-induced atrophy and autophagy programs by Foxk1 and Sin3A

Project description:Autophagy is the primary catabolic process triggered in response to starvation. Although autophagic regulation within the cytosolic compartment is well established, it is becoming clear that nuclear events also regulate the induction or repression of autophagy. Nevertheless, a thorough understanding of the mechanisms by which sequence-specific transcription factors modulate expression of genes required for autophagy is lacking. Here, we identify Foxk proteins (Foxk1 and Foxk2) as transcriptional repressors of autophagy in muscle cells and fibroblasts. Interestingly, Foxk1/2 serve to counter-balance another forkhead transcription factor, Foxo3, which induces an overlapping set of autophagic and atrophic targets in muscle. Foxk1/2 specifically recruits Sin3A-HDAC complexes to restrict acetylation of histone H4 and expression of critical autophagy genes. Remarkably, mTOR promotes the transcriptional activity of Foxk1 by facilitating nuclear entry to specifically limit basal levels of autophagy in nutrient-rich conditions. Our study highlights an ancient, conserved mechanism whereby nutritional status is interpreted by mTOR to restrict autophagy by repressing essential autophagy genes via Foxk-Sin3-mediated transcriptional control. Examination of (1) chromatin binding of Foxk1 and Sin3A in non-starved myoblasts and (2) gene expression profiling upon either starvation or siRNA-mediated depletion of Foxk1 relative to a non-starved control.

2014-11-17 | E-GEOD-56932 | biostudies-arrayexpress

FoxK1 and FoxK2 cooperate with ORF45 to promote late lytic replication of Kaposi’s sarcoma-associated herpesvirus

Project description:Lytic replication is essential for persistent infection of Kaposi’s sarcoma-associated herpesvirus (KSHV) and the pathogenesis of related diseases, and many cellular pathways are hijacked by KSHV proteins to initiate and control the lytic replication of this virus. However, the machinery involved in KSHV lytic replication from the early to the late phases remains largely undetermined. We previously revealed that KSHV ORF45 plays important roles in late transcription and translation. In the present study, we reveal that the Forkhead box proteins FoxK1 and FoxK2 are ORF45-binding proteins and are essential for KSHV lytic gene expression and virion production and that depletion of FoxK1 or FoxK2 significantly suppresses the expression of many late viral genes. FoxK1 and FoxK2 directly bind to the promoters of several late viral genes, ORF45 augments the promoter binding and transcriptional activity of FoxK1 and FoxK2, and then FoxK1 or FoxK2 cooperates with ORF45 to promote late viral gene expression. Our findings suggest that ORF45 interacts with FoxK1 and FoxK2 and promotes their occupancy on a cluster of late viral promoters and their subsequent transcriptional activity; consequently FoxK1 and FoxK2 promote late gene expression to facilitate KSHV lytic replication.

2024-08-05 | GSE273577 | GEO

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