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Cooperative binding of Oct4, Sox2, and Klf4 with stage-specific transcription factors orchestrates reprogramming

ABSTRACT: Cooperative binding of Oct4, Sox2, and Klf4 with stage-specific transcription factors orchestrates reprogramming

PROVIDER: PRJNA356288 | ENA |

REPOSITORIES: ENA

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Gene expression analysis during reprogramming with sequential infecion of Oct4/Klf4/cMyc/Sox2

Project description:To further understand the mechanism of reprogramming, the mouse embryonic fibroblast cells were infected with Oct4, Klf4, c-Myc and Sox2 with special sequence. 1) Oct4 and Klf4 containing retrovirus was delivered on day 0. 2) Oct4, Klf4 and c-Myc were delivered on Day 1.5. 3) c-Myc and Sox-2 were deivered on Day 3. 4) Sox2 were delivered on Day 4.5. 5) Vitamin C containging medium were used from Day 6. The gene expression of Day 0 (MEF), Day 1.5, Day 3, Day 4.5 and Day 6 were analyzed with micro array to indentify the possible underlying mechanism. Especially the factors related to MET/EMT, cell cycle and epigenetic were focused. MEF cells were subjected for reprogramming with special protoocl: 1) Oct4 and Klf4 containing retrovirus were delivered on day 0. 2) Oct4, Klf4 and c-Myc were delivered on Day 1.5. 3) c-Myc and Sox-2 were deivered on Day 3. 4) Sox2 were delivered on Day 4.5. 5) Vitamin C containging medium were used from Day 6. RNA on Day 0 (MEF), Day 1.5, Day 3, Day 4.5 and Day 6 were collected for analysis.

2012-07-11 | E-GEOD-39260 | biostudies-arrayexpress

Gene expression analysis during reprogramming with sequential infecion of Oct4/Klf4/cMyc/Sox2

2012-07-12 | GSE39260 | GEO

Cooperative binding of Oct4, Sox2, and Klf4 with stage-specific transcription factors orchestrates reprogramming [ChIP-seq]

Project description:Oct4, Sox2, Klf4, and cMyc (OSKM) reprogram somatic cells to pluripotency. To gain a mechanistic understanding of their function, we mapped OSKM-binding, stage-specific transcription-factors (TFs), and chromatin-states in discrete reprogramming stages and performed loss- and gain-of-function experiments. We found that early in reprogramming OSK extensively bind somatic-enhancers and initiate their decommissioning by recruiting Hdac1. Concurrently, OSK engage other sites, including specific pluripotency-enhancers, and induce the relocation of somatic TFs to these sites and away from somatic-enhancers, extending somatic-enhancer decommissioning genome-wide. Pluripotency-enhancer selection early in reprogramming occurs predominantly at sites with high OSK-motif densities and requires collaborative binding by OSK. Most pluripotency-enhancers are selected later and occupied by OS and stage-specific-TFs like Esrrb. Overexpression of stage-specific-TFs influences reprogramming efficiency by changing OSK-occupancy, somatic-enhancer decommissioning, and pluripotency-enhancer selection. We propose that collaborative interactions among OSK and with stage-specific-TFs direct both somatic-enhancer decommissioning and pluripotency-enhancer selection, which drives the enhancer reorganization underlying reprogramming

2017-01-19 | GSE90893 | GEO

Cooperative binding of Oct4, Sox2, and Klf4 with stage-specific transcription factors orchestrates reprogramming [ATAC-seq]

2017-01-19 | GSE90892 | GEO

Cooperative binding of Oct4, Sox2, and Klf4 with stage-specific transcription factors orchestrates reprogramming [RNA-seq]

2017-01-19 | GSE90894 | GEO

Global transcriptome profiling of Oct4/Klf4/Sox2 (3Factor, 3F) + IL6 iPS clones derived from mouse embryonic fibroblasts.

Project description:We used heterokaryon cell fusion based reprogramming and identified the cytokine IL6 as a potential regulator of reprogramming to pluripotency. We generated iPS clones using the four reprogramming factors (4F) Oct4, Klf4, Sox2, and c-Myc. In addition, iPS clones were generated using only three factors (3F: Oct4, Klf4, amd Sox2) with the addition of the cytokine IL6 to reprogramming culture conditions. Global RNA-Seq of the 3F + IL6 derived iPS clones was done for comparison with 4F-derived iPS clones, mouse embryonic stem cells and mouse embryonic fibroblasts.

2013-08-28 | GSE46104 | GEO

Histone profile for wild type MEF and secondary MEF with Dox-inducible vectors for Klf4, Sox2 and Oct4 (KSO)

Project description:Histone profile for wild type MEF and secondary MEF with Dox-inducible vectors for Klf4, Sox2 and Oct4 (KSO).

2010-12-31 | GSE21271 | GEO

Function of Sox2 and Klf4 during SKM reprogramming

Project description:Differentiated somatic cells can be reprogrammed into induced pluripotent stem cells by ectopic expression of transcription factors Oct4, Sox2, Klf4, and c-Myc, but the mechanisms are still to be dissected. The stoichiometry of factors influences the efficiency of induced pluripotent stem cells, and previous studies emphasized the requirement of high levels of overexpressed Oct4. In this study, we showed that, with appropriate stoichiometry achieved by polycistronic cassettes, Sox2 and Klf4 were sufficient to initiate and establish pluripotency in differentiated cells efficiently without Oct4 overexpression.

2020-01-01 | GSE98280 | GEO

Histone profile for wild type MEF and secondary MEF with Dox-inducible vectors for Klf4, Sox2 and Oct4 (KSO)

Project description:Histone profile for wild type MEF and secondary MEF with Dox-inducible vectors for Klf4, Sox2 and Oct4 (KSO). ChIP-Seq data for H3K4me3, H3K27me3 and H3K9me3

2010-12-31 | E-GEOD-21271 | biostudies-arrayexpress

ChIP-Seq data in secondary fibroblast with dox-inducible cassettes for Oct4, Sox2 and Klf4.

Project description:The conversion of fibroblasts to induced pluripotent stem cells (iPS) by forced expression of Oct4, Sox2 and Klf4 is among the earliest demonstrations of reprogramming to a pluripotent state by forced expression of transcription factors. To gain insights into the transcriptional state of genes required for reprogramming, we profiled RNA polymerase II, H3K27me3 and E2F4.

2010-10-01 | GSE24471 | GEO

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