Dataset Information

The SETD7–H3K4me1–APLNR Axis Couples Epigenetic Signaling to Orchestrate Endoderm Specification in Human Pluripotent Stem Cells

ABSTRACT: The differentiation of human pluripotent stem cells into definitive endoderm (DE), a pivotal event in embryonic development, remains incompletely elucidated with respect to its epigenetic control. Here, we identified SETD7, a histone H3K4 monomethyltransferase (H3K4me1), as dynamically upregulated during DE specification, with its expression correlating strongly with the key lineage marker SOX17. Genetic knockdown of SETD7 impaired DE formation, as evidenced by reduced expression of DE markers and disruption of APLNR-mediated PI3K/AKT/mTOR signaling—a phenotypic defect recapitulated by pharmacological inhibition of APLNR. Mechanistically, SETD7 facilitates H3K4me1 deposition at enhancer regions of APLNR, thereby promoting its transcriptional activation. Our findings unveil an epigenetic-regulatory axis wherein SETD7-mediated enhancer priming drives APLNR expression, ultimately activating the PI3K/AKT/mTOR cascade to promote endodermal commitment. Through an integrated approach incorporating doxycycline-inducible SETD7 knockdown in hESCs, pathway-specific pharmacology, ChIP-qPCR, and 3D organoid modeling, we decipher the spatiotemporal regulatory network governed by SETD7 during DE specification. This study highlights the critical crosstalk between histone modification landscapes and signal transduction during cell fate determination and establishes a novel strategy for manipulating differentiation trajectories.

ORGANISM(S): Homo sapiens

PROVIDER: GSE309012 | GEO | 2026/01/01

REPOSITORIES: GEO

ACCESS DATA

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Project description:Mosca2012 - Central Carbon Metabolism Regulated by AKT The role of the PI3K/Akt/PKB signalling pathway in oncogenesis has been extensively investigated and altered expression or mutations of many components of this pathway have been implicated in human cancers. Indeed, expression of constitutively active forms of Akt/PKB can prevent cell death upon growth factor withdrawal. PI3K/Akt/mTOR-mediated survival relies on a profound metabolic adaptation, including aerobic glycolysis. Here, the link between the PI3K/Akt/mTOR pathway, glycolysis, lactic acid production and nucleotide biosynthesis has been modelled, considering two states - high and low PI3K/Akt/mTOR activity. The high PI3K/Akt/mTOR activity represents cancer cell line where PI3K/Akt/mTOR promotes a high rate of glucose metabolism (condition H) and the low PI3K/Akt/mTOR activity is characterised by a lower glycolytic rate due to a reduced PI3K/Akt/mTOR signal (condition L). This model corresponds to the high PI3K/Akt/mTOR signal (condition H). This model is described in the article: Computational Modelling of the Metabolic States Regulated by the Kinase Akt. Mosca E, Alfieri R, Maj C, Bevilacqua A, Canti G, Milanesi L. Frontiers in Systems Biology. 2012 Oct 13 Abstract: Signal transduction pathways and gene regulation determine a major reorganization of metabolic activities in order to support cell proliferation. Protein Kinase B (PKB), also known as Akt, participates in the PI3K/Akt/mTOR pathway, a master regulator of aerobic glycolysis and cellular biosynthesis, two activities shown by both normal and cancer proliferating cells. Not surprisingly considering its relevance for cellular metabolism, Akt/PKB is often found hyperactive in cancer cells. In the last decade, many efforts have been made to improve the understanding of the control of glucose metabolism and the identification of a therapeutic window between proliferating cancer cells and proliferating normal cells. In this context, we have modelled the link between the PI3K/Akt/mTOR pathway, glycolysis, lactic acid production and nucleotide biosynthesis. We used a computational model in order to compare two metabolic states generated by the specific variation of the metabolic fluxes regulated by the activity of the PI3K/Akt/mTOR pathway. One of the two states represented the metabolism of a growing cancer cell characterised by aerobic glycolysis and cellular biosynthesis, while the other state represented the same metabolic network with a reduced glycolytic rate and a higher mitochondrial pyruvate metabolism, as reported in literature in relation to the activity of the PI3K/Akt/mTOR. Some steps that link glycolysis and pentose phosphate pathway revealed their importance for controlling the dynamics of cancer glucose metabolism. This model is hosted on BioModels Database and identified by: MODEL1210150000 . To cite BioModels Database, please use: BioModels Database: An enhanced, curated and annotated resource for published quantitative kinetic models . To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer to CC0 Public Domain Dedication for more information.

Dataset Information

The SETD7–H3K4me1–APLNR Axis Couples Epigenetic Signaling to Orchestrate Endoderm Specification in Human Pluripotent Stem Cells

Dataset's files

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets