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Aryl hydrocarbon receptor ligands drive pancreatic cancer initiation and progression through pro-tumorigenic T cell polarization

ABSTRACT: Aryl hydrocarbon receptor ligands drive pancreatic cancer initiation and progression through pro-tumorigenic T cell polarization

PROVIDER: PRJNA1294180 | ENA |

REPOSITORIES: ENA

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Zebrafish larvae aryl hydrocarbon receptor ligands and inhibitor

Project description:Zebrafish larvae aryl hydrocarbon receptor ligands and inhibitor

| PRJNA495640 | ENA

Aryl hydrocarbon receptor-interacting protein regulates tumorigenic and metastatic properties of colorectal cancer cells driving liver metastasis

Project description:Aryl hydrocarbon receptor-interacting protein (AIP), a putative positive intermediary in aryl hydrocarbon receptor-mediated signaling, is overexpressed in highly metastatic human KM12SM CRC cells, with high metastatic capacity to liver, and other highly metastatic CRC cells. Meta-analysis and immunohistochemistry were used to assess the relevance of this protein in CRC. Cellular functions and signaling mechanisms mediated by AIP were assessed by gain-of-function experiments and in vitro and in vivo experiments. A significant association of high AIP expression with poor CRC patients’ survival was observed. Gain-of-function and quantitative proteomics experiments demonstrated that AIP increased tumorigenic and metastatic properties of isogenic KM12C (poorly-metastatic) and KM12SM CRC cells. AIP overexpression dysregulated epithelial-to-mesenchymal (EMT) markers and induced several transcription factors and Cadherin-17 activation. The former induced the signaling activation of AKT, SRC, and JNK kinases to increase adhesion, migration and invasion of CRC cells. In vivo, AIP expressing KM12 cells induced tumor growth and liver metastasis. Furthermore, KM12C (poorly-metastatic) cells ectopically expressing AIP became metastatic to liver. Our data reveal new roles for AIP in regulating proteins associated with cancer and metastasis to induce tumorigenic and metastatic properties in colon cancer cells driving liver metastasis.

2023-05-10 | PXD031119 | Pride

Endogenous aryl hydrocarbon receptor ligands-dysregulated phosphoproteomes and proteomes in human fetal endothelial cells

Project description:Preeclampsia (PE) is a leading cause of maternal and fetal morbidity and mortality and is characterized by a wide spectrum of impaired maternal and fetal vascular function. Aryl hydrocarbon receptor (AhR, a ligand-activated transcription factor) plays a critical role in regulating vascular development and function. Endogenous AhR ligands can induce endothelial dysfunction. However, the underlying protein phospho-signaling mechanisms remain unknown. To determine if endogenous AhR ligands dysregulate the phosphoproteomes and proteomes in endothelial cells, primary human umbilical vein endothelial cells (HUVECs) (n = 4; 2 cell preparations/cell sex) were cultured in endothelial cell media (ECM). After 16 hr serum starvation, subconfluent cells were treated with 1 µM 2-(1’H-indole-3’-carbonyl)-thiazole-4-carboxylic acid methyl ester (ITE, an endogenous AhR ligand) or DMSO (vehicle) for 4 and 24 hr. The cell proteins were subjected to a bottom-up phosphoproteomic analysis to determine acute and prolonged effects of ITE on protein phosphorylation.

2025-02-10 | PXD047834 | Pride

Aryl hydrocarbon receptor ligands drive pancreatic cancer initiation and progression through pro-tumorigenic T cell polarization

Project description:Here, we aimed to determine whether AhR ligands found in cigarette smoke, such as TCDD, promote pancreatic dysplasia and PDAC progression. We utilized an orthotopic mouse model of PDAC and collected pancreatic tissue from mice treated with either TCDD or a vehicle control and performed single-cell RNA sequencing to assess changes in the tumor microenvironment.

2025-07-31 | GSE303102 | GEO

Zebrafish larvae aryl hydrocarbon receptor ligands and inhibitor

Project description:Wild type zebrafish (AB strain, https://zfin.org/action/genotype/view/ZDB-GENO-960809-7) were set up for mating overnight, in 3:2 ratios, females and males, respectively. Fertilized embryos from wildtype zebrafish AB strain were used for all experiments and kept in Embryo medium (E3, 5 mM NaCl, 0.17 mM KCl, 0.33 mM CaCl2, 0.33 mM MgSO4) in an incubator at 28ºC. At 1dpf, larvae were manually dechorionated under a stereomicroscope. At 2dpf, zebrafish larvae were divided randomly into the different experimental groups, at a density of 12 larvae per well of a 12 well plate (Corning) in 1.5mL of E3. Three biological replicates of 12 larvae per condition were exposed to different conditions for 4 hours at 28 ºC: DMSO; DMSO + CH223191 (5mM); 3-o-C12-L-HSL (50mM); 3-o-C12-L-HSL (50mM) + CH223191 (5 mM ); 1-hydroxyphenazine (1-HP, 5mM); 1-HP (5mM) + CH223191(5mM) and 1-HP (5mM) + 3-o-C12-L-HSL (50mM).To mention, in experiments using the Aryl hydrocarbon Receptor inhibitor CH223191, larvae were pre-exposed to 5uM of the inhibitor for 2h prior to the start of the experiment and the inhibitor was kept during the experiment. After the desired exposure to diverse ligands, larvae were euthanized with Tricaine (MS-222, 300 µg/mL) and placed in Trizol for RNA isolation. The same experimental layout was performed 5 times, and samples were subjected to microarray hybridization and analysis.

2019-10-01 | GSE121101 | GEO

Aryl Hydrocarbon Receptor Ligands Present In The Environment Impact Human Trophoblast Cell Development

Project description:Aryl Hydrocarbon Receptor Ligands Present In The Environment Impact Human Trophoblast Cell Development

| PRJNA1033546 | ENA

Lead optimization of aryl hydrocarbon receptor ligands for treatment of inflammatory skin disorders

Project description:Lead optimization of aryl hydrocarbon receptor ligands for treatment of inflammatory skin disorders

| PRJNA875926 | ENA

Endogenous aryl hydrocarbon receptor ligands-dysregulated transcriptomic profiles and vascular function in rat placentas

Project description:Preeclampsia (PE) is a hypertensive disorder and a leading cause of maternal and fetal mortality and morbidity during human pregnancy. Aryl hydrocarbon receptor (AhR), a ligand-activated transcription factor, regulates vascular development and function during pregnancy. Here, we report the important role of endogenous AhR ligands in vascular growth and function during pregnancy using a rat model. We found that exposure of pregnant rats to an endogenous AhR ligand (ITE, [2-(1’H-indole-3’-carbonyl)-thiazole-4-carboxylic acid methyl ester]) elevated maternal blood pressure and induced proteinuria, while decreased uteroplacental blood flow and fetal/ placental growth, all of which are hallmarks of PE. ITE also dysregulated transcriptomic profiles of rat placentas in a fetal sex-specific manner. The ITE-dysregulated genes were enriched in biological function and pathways highly relevant to diseases of heart, liver, and kidney, vascular function, and inflammation responses. Collectively, we conclude that dysregulation of endogenous AhR ligands may contribute to the PE-impaired vascular function through fetal sex-specific regulation of immune cell infiltration and transcriptomes. These AhR ligand-activated genes and pathways might represent promising therapeutic and sex-specific targets for PE-impaired vascular function.

2025-02-10 | GSE250269 | GEO

Ancestralization of the modern human aryl hydrocarbon receptor by genome editing

Project description:The aryl hydrocarbon receptor (AHR) is a transcription factor that upon binding ligands induces the expression of cytochrome P450 genes, which encode enzymes that metabolize aromatic hydrocarbons. The AHR carries an amino acid substitution at position 381 in all present-day humans that occurred after the divergence of modern humans from Neandertals and Denisovans. Here, we use genome editing to revert position 381 back to the ancestral state in human cells. Cells were treated with ligands for 4 h followed by RNA extraction and RNA-Seq.

2024-06-26 | GSE210514 | GEO

Endogenous aryl hydrocarbon receptor ligands-dysregulated transcriptomic profiles and endothelial function in human fetal endothelial cells

Project description:Preeclampsia (PE) is a hypertensive disorder and a leading cause of maternal and fetal mortality and morbidity during human pregnancy. Aryl hydrocarbon receptor (AhR), a ligand-activated transcription factor, regulates vascular development and function during pregnancy. Here, we report the important role of endogenous AhR ligands in endothelial growth and function during pregnancy using human umbilical vein endothelial cells (HUVECs) as a model. We found that ITE, ([2-(1’H-indole-3’-carbonyl)-thiazole-4-carboxylic acid methyl ester], an endogenous AhR ligand) decreased cell proliferation and monolayer integrity in HUVECs in vitro. ITE also dysregulated transcriptomic profiles of HUVECs in a fetal sex-specific manner. The ITE-dysregulated genes were enriched in biological function and pathways highly relevant to cardiovascular diseases, vascular function, and inflammation responses. We conclude that dysregulation of endogenous AhR ligands may contribute to the PE-impaired endothelial function through fetal sex-specific regulation of endothelial transcriptomes. These AhR ligand-activated genes and pathways might represent promising therapeutic and sex-specific targets for PE-impaired endothelial function.

2025-02-10 | GSE250196 | GEO

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