Project description:The objective of this study was to analyze AHR activation through aromatic amino acid metabolism. To this end, glioblastoma cells were exposed to aromatic amino acid derived metabolites and their ability to activate AHR was analysed. In addition, AHR activation was evaluated in glioblastoma cells expressing IL4I1, an aromatic amino acid degrading enzyme, with or without shRNA mediated knockdown of AHR.

2020-08-19 | GSE129977 | GEO

AHR activation in glioblastoma cells [I3P_HPP_PP_U87_U87]

2020-08-19 | GSE129976 | GEO

AHR activation in glioblastoma cells [I3CA_U87]

2020-08-19 | GSE129974 | GEO

AHR activation in glioblastoma cells [FICZ_KynA]

2020-08-19 | GSE129972 | GEO

Rutaecarpine inhibits glioblastoma migration by activating the aryl hydrocarbon receptor (AhR) signaling pathway

Project description:Glioblastoma is the most frequent and aggressive primary astrocytoma in adults. The high migration ability of the tumor cells is an important reason for the high recurrence rate and poor prognosis of glioblastoma. Recently, emerging evidence has shown that the migration ability of glioblastoma cell was inhibited upon the activation of aryl hydrocarbon receptor (AhR), suggesting potential anti-tumor effects of AhR agonists. Rutaecarpine is a natural compound with potential tumor therapeutic effects which can possibly bind to AhR. However, its effect on the migration of glioblastoma is unclear. Therefore, we aim to explore the effects of rutaecarpine on the migration of human glioblastoma cells U87 and the involvements of the AhR signaling pathway. The results showed that: (i) compared with other structural related alkaloids, like evodiamine and dehydroevodiamine, rutaecarpine was a more potent AhR activator, and has stronger inhibitory effect on the glioblastoma cell migration; (ii) rutaecarpine decreased the migration ability of U87 cells in an AhR-dependent manner; (iii) AhR mediated the expression of a tumor suppressor interleukin 24 (IL24) induced by rutaecarpine, and AhR-IL24 axis was involved in the anti-migratoryeffects of rutaecarpine on the glioblastoma. Besides IL24, other motility related genes were proposed to participate in the migration regulation process of rutaecarpine by RNA-Seq analysis. These data suggest that rutaecarpine is a natural AhR agonist that could inhibit the migration of glioblastomaandbe a potential candidate for developing therapeutic drug against glioblatoma.

2021-12-07 | GSE183606 | GEO

AHR activation in glioblastoma cells and gene expression analysis of T cells in TCL1-AT mice.

Project description:AHR activation in glioblastoma cells and gene expression analysis of T cells in TCL1-AT mice.

| PRJNA533317 | ENA

miRNA expression in Th17 cells after AhR activation

Project description:Th17 cells play a major role in the pathogenesis of Rheumatoid Arthritis, and it is well known the involvement of the Aryl Hydrocarbon Receptor (AhR) during the differentiation and activation of these cells. Due to its function as a transcription factor, we tested wether AhR would mediate part of its function in Th17 cells through the transcription of microRNAs (miRNAs). Therefore, we first perform a microarray experiment to identify the miRNAs induced after AhR activation in Th17 cells. Under a supervised hierarchical clustering, we identify 224 miRNAs differentially expressed (fold-change ³ 2.0 and FDR < 5%). Among them, 22 miRNAs were up regulated exclusively in Th17 cells in the presence of FICZ.

2021-01-27 | GSE149169 | GEO

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