Klf5 regulates trophoblast stem cell pluripotency as a transcription activator via H3K27ac dependent chromatin accessibility
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA853374 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR19878640_1.fastq.gz | Fastqsanger.gz | |||
| SRR19878640_2.fastq.gz | Fastqsanger.gz | |||
| SRR19878641_1.fastq.gz | Fastqsanger.gz | |||
| SRR19878641_2.fastq.gz | Fastqsanger.gz | |||
| SRR19878642_1.fastq.gz | Fastqsanger.gz |
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Project description:The effective proliferation and differentiation of Trophoblast Stem Cells (TSCs) is necessary to ensure the normal development of the placenta, which is the key to maintain fetal growth and development during pregnancy. Previous studies have found that knocking out Klf5 affects abnormally trophoderm development, but its regulatory mechanism is unclear. Here we performed klf5 knockdown in TSCs cultured under stem state condition. Klf5-KD triggred obvious differentiation phenotype.
2022-09-27 | GSE207053 | GEO
Project description:The effective proliferation and differentiation of trophoblast stem cells (TSCs) is indispensable for the development of the placenta, which is the key to maintaining normal fetal growth during pregnancy. Kruppel-like factor 5 (Klf5) is implicated in the activation of pluripotency gene expression in embryonic stem cells (ESCs), yet its function in TSCs is poorly understood. Here, we showed that Klf5 knockdown resulted in the downregulation of core TSC-specific genes, consequently causing rapid differentiation of TSCs. Consistently, Klf5-depleted embryos lost the ability to establish TSCs in vitro. At the molecular level, Klf5 preferentially occupied the proximal promoter regions and maintained an open chromatin architecture of key TSC-specific genes. Deprivation of Klf5 impaired the enrichment of p300, a major histone acetyl transferase of H3 lysine 27 acetylation (H3K27ac), and further reduced the occupancy of H3K27ac at promoter regions, leading to decreased transcriptional activity of TSC pluripotency genes. Thus, our findings highlight a novel mechanism of Klf5 in regulating the self-renewal and differentiation of TSCs and provide a reference for understanding placental development and improving pregnancy rates.
| S-EPMC10768793 | biostudies-literature
Project description:The transcription factor Klf5 is indispensable for both embryonic (redundantly with Klf4) and extra-embryonic development during pre-implantation, yet its role in re-establishing these different fates in vitro remains largely unexplored. Here, we demonstrate that in the absence of WNT signaling activation at the beginning, ectopic expression of Klf5 in post-implantation epiblast stem cells (EpiSCs) not only induces naïve pluripotency, but also exclusively drives reprogramming into trophoblast stem cells (TSCs) and primordial germ cells (PGCs) by directly reactivating key lineage-specific determinants. Single-cell transcriptome analysis reveals distinct reprogramming trajectories toward these three fates, alongside a non-reprogramming trajectory that driven by Klf5-mediated BMP signaling activation. Moreover, endogenous Klf5 is crucial for establishing TSC and PGC fates from embryonic stem cells driven by other inducers. Our findings highlight Klf5’s multipotent reprogramming capacity and its pivotal role in early TSC and PGC fate specification, offering new insights into its versatile functions during embryonic development.
2025-06-01 | GSE281941 | GEO
Project description:Lineage plasticity is a hallmark of pancreatic ductal adenocarcinoma (PDAC) and contributes to tumor heterogeneity and therapeutic resistance. Here, we identify KLF5 as a dynamic master regulator of epithelial lineage identity in PDAC, with dichotomous roles in promoting either classical or basal-like transcriptional programs. Through unbiased proteomic and genetic screens, we uncover the AAA+ ATPases RUVBL1 and RUVBL2 as essential coactivators of KLF5 across both lineage states. We demonstrate that ATP hydrolysis by RUVBL1/2 is required for the stable interaction with an intrinsically disordered region of KLF5, enabling its recruitment to lineage-specific enhancers and driving transcriptional regulation of identity-defining genes. Notably, small-molecule inhibitors of RUVBL1/2 ATPase activity, which have anti-PDAC activity in vivo, suppress KLF5-dependent transcription. These findings define a previously unrecognized mechanism of ATP hydrolysis-dependent transcriptional coactivation by AAA+ ATPases and highlight a potential therapeutic strategy for modulating aberrant lineage programs in cancer. This project contains files relative to a Co-IP MS with KLF5-MBP as bait.
2025-08-21 | PXD066112 | Pride
Project description:For a brief but critical period post-fertilization, the mammalian embryo is entirely dependent on maternal products inherited from the oocyte. Previous research showed that oocyte-specific loss of Med12, an X-linked gene and Mediator complex subunit, leads to female sterility despite normal folliculogenesis and ovulation. Here, we show that loss of maternal Med12 has minimal effect on the oocyte transcriptome and does not manifest in embryonic lethality until post-implantation. Implants derived from Med12-null oocytes demonstrate abnormal placentation at E9.5, with an overabundance of trophoblast giant cells (TGC). This phenotype associates with downregulation of trophoblast pluripotency markers (e.g. Cdx2) and activation of drivers of TGC identity (e.g. Stra13) in the E7.5 extraembryonic ectoderm, revealing a previously undescribed role for Med12 in trophoblast pluripotency maintenance. Notably, we find consistently low Med12 expression in embryos derived from Med12-null oocytes, potentially due to programmed paternal X chromosome inactivation (XCI). To isolate the consequences of maternal Med12 depletion, we introduced an autosomal Med12 transgene and show that embryonic expression of the transgene rescues development of Med12-null oocytes. We conclude that oocyte-specific deletion of Med12 produces a maternal-zygotic double knock-out in extraembryonic tissues due to paternal XCI, leading to loss of pluripotency in the trophoblast, placental malformation, and embryonic death.
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Project description:Homozygous disruption of Bteb2/Klf5, a homolog of Drosophila gap gene Krüppel, led to increased expression of various differentiation marker genes, such as Fgf5, Cdx2, and Brachyury in mouse ES cells without compromising their ability to differentiate into all three germ layers. Upon removal of LIF, Klf5-deficient ES cells showed faster differentiation kinetics than wild-type ES cells. In contrast, overexpression of Klf5 in ES cells suppressed the transcription of differentiation marker genes, and maintained pluripotency in the absence of LIF. In order to search downstream genes of Klf5, we surveyed genes implicated in ES cell proliferation by microarray analysis Keywords: cell type comparison
2008-12-31 | GSE9244 | GEO
Project description:Maternal Med12 safeguards trophoblast pluripotency and placental development
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Project description:Oct4 is considered a master transcription factor for pluripotent cell self-renewal and embryo development. It primarily collaborates with other transcriptional factors or coregulators to maintain pluripotency. However, it is still unclear how Oct4 interacts with its partners. Here, we show that the Oct4 linker interface mediates competing and balanced Oct4 protein interactions which are crucial for maintaining pluripotency. Linker mutant ESCs maintain the key pluripotency genes expression, but show decreased expression of self-renewal genes and increased expression of differentiation genes which result in impaired ESCs self-renewal and early embryonic lethality. Linker mutation dose not affect Oct4 genomic binding and transactivation potential, but breaks the balanced Oct4 interactome. In mutant ESCs, the interaction between Oct4 and Klf5 was decreased, but interactions between Oct4 and Cbx1, Ctr9, Cdc73 were increased which disrupt the epigenetic state of ESCs. Overexpression of Klf5 or knockdown Cbx1, Cdc73 rescue the cellular phenotype of linker mutant ESCs by rebalancing Oct4 interactome indicating that different partners interact with Oct4 competitively. Thus, by showing how Oct4 interacts with different partners, we provide novel molecular insights to explain how Oct4 contributes to the maintenance of pluripotency.
2021-12-10 | PXD017456 | Pride
Project description:We identified the binding profile of Klf4 and Klf5, which are both transcription facyors involved in the maintenance of pluripotency of ESCs by inhibiting their differentiation either into endoderm or mesoderm respectively. Undifferentiated mouse ESCs were used to identify Klf4 and Klf5 bidning sites
2014-04-25 | E-GEOD-49848 | biostudies-arrayexpress
Project description:During early embryogenesis, Kruuppel-like factor KLF5 is expressed in inner cell mass (ICM), trophectoderm (TE), and primordial germ cell (PGC). It is wellknow to be essential for specifying the TE fate, as well as redundantly with KLF2/4 for specifying the ICM fate during the first fate segregation. Here, we aimed to clarify whether KLF5 regulates these three fates in vitro. We firstly validated the necessity of KLF5 in mouse trophoblast stem cells (TSCs) and PGC-like cells. Mechanistically, we showed that KLF5 is deeply integrated into the transcriptional networks of ICM, TE and PGC in a context-dependent manner. Furthermore, KLF5 is almost the only factor capable of driving TSC fate from primed epiblast stem cells. It could also induce a transition from the primed to naive state just in the absence of WNT signaling. During this transition, KLF5 generates PGC-like cells, concomitantly. Taken together, our work supports KLF5 as a powerful and versatile specifier in both early embryonic lineage determination and in vitro cell fate reprogramming.
2025-06-01 | GSE269422 | GEO