Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Differentially manufactured Arnica montana L. extracts mediate anti-inflammatory effects on human T cells via different signaling pathways

ABSTRACT: In this study, differentially prepared Arnica extracts and the lead compounds Thymol and Helenalin were directly compared for their immunomodulatory potential using primary human T cells. Extracts from different plant parts (root or whole plant) and prepared by different manufacturing processes inhibited T cell activation and proliferation. nCounter gene expression analysis and subsequent gene set enrichment analysis showed that Arnica preparations intervene in T cell receptor (TCR) signaling. Interestingly, the three tested extracts were, however, found to mediate their effects via interfering with different TCR signaling pathways. The hydroethanolic root extract selectively inhibited the binding of NFκB to DNA, while the aqueous fermented whole plant extract preferentially inhibited NFAT-dependent gene expression. The hydroethanolic whole plant extract (by trend) diminished both, NFκB DNA-binding and NFAT-dependent gene expression.

ORGANISM(S): Homo sapiens

PROVIDER: GSE299224 | GEO | 2025/10/15

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

To study the effect of moss extract as anthelmintic on cestodes and nematodes of chick and sheep

Project description:The bryophyte was collected and dried. Aqueous extract was prepared and different concentration of the extracts were treat against Ascardia galli, chicken nematode and Trichostrongylus, sheep nematode. Control was maintained for both. The control and treated samples were further processed to study the gene expression by isolating and sequencing mRNA using Illumina next-gen sequencing.

2020-09-17 | GSE137609 | GEO

Shin2019- Regulation of nuclear factor of activated T-cells (NFAT)

Project description:A properly functioning immune system is vital for an organism's wellbeing. Immune tolerance is a critical feature of the immune system that allows immune cells to mount effective responses against exogenous pathogens such as viruses and bacteria, while preventing attack to self-tissues. Activation-induced cell death (AICD) in T lymphocytes, in which repeated stimulations of the T-cell receptor (TCR) lead to activation and then apoptosis of T cells, is a major mechanism for T cell homeostasis and helps maintain peripheral immune tolerance. Defects in AICD can lead to development of autoimmune diseases. Despite its importance, the regulatory mechanisms that underlie AICD remain poorly understood, particularly at an integrative network level. Here, we develop a dynamic multi-pathway model of the integrated TCR signalling network and perform model-based analysis to characterize the network-level properties of AICD. Model simulation and analysis show that amplified activation of the transcriptional factor NFAT in response to repeated TCR stimulations, a phenomenon central to AICD, is tightly modulated by a coupled positive-negative feedback mechanism. NFAT amplification is predominantly enabled by a positive feedback self-regulated by NFAT, while opposed by a NFAT-induced negative feedback via Carabin. Furthermore, model analysis predicts an optimal therapeutic window for drugs that help minimize proliferation while maximize AICD of T cells. Overall, our study provides a comprehensive mathematical model of TCR signalling and model-based analysis offers new network-level insights into the regulation of activation-induced cell death in T cells Model is encoded by Johannes and submitted to BioModels by Ahmad Zyoud.

2020-03-20 | MODEL2003200002 | BioModels

Shin2019- Regulation of nuclear factor of activated T-cells (NFAT)

2020-03-20 | MODEL2003200003 | BioModels

Testing biological actions of medicinal plants from Northern Vietnam on zebrafish embryos and larvae: developmental, behavioral, and putative therapeutical effects.

Project description:Evaluating the risks and benefits of using traditional medicinal plants is of utmost importance for a huge fraction of the human population, in particular in Northern Vietnam. Zebrafish are increasingly used as a simple vertebrate model for testing toxic and physiological effects of compounds, especially on development. Here, we tested 12 ethanolic extracts from popular medicinal plants collected in Northern Vietnam for their effects on zebrafish survival and development during the first 4 days after fertilization. We characterized more in detail their effects on epiboly, hatching, growth, necrosis, body curvature, angiogenesis, skeletal development and mostly increased movement behavior. Finally, we confirm the effect on epiboly caused by the Mahonia bealei extract by staining the actin filaments and show that this extract also inhibits cell migration of mouse embryo fibroblasts. In conclusion, we show that zebrafish early life stages reveal that traditional medicinal plant extracts are able to affect embryo development to various degrees, prompting caution to apply these medications to pregnant women. In addition, we show that an extract causing delay in epiboly also inhibits mammalian cell migration, suggesting that this effect may serve as a preliminary test for identifying extracts that inhibit cancer metastasis.

2023-03-31 | GSE207770 | GEO

Evaluation of the potential of 4 micro algae extracts to modulate the immune response and metabolic state in intestinal epithelium cells

Project description:Micro algae's are used as alternative protein source in human and animal diets. Besides micro algae contain substantial amounts of proteins they also contain a high concentration of, often unique, biological and chemical substances with potential to induce beneficial and health promoting effects in humans and animals. This study was set up to evaluate the potential of these substances to improve (intestinal) health. The effect of extracts prepared from 3 monocultures of micro algae's (Chlorella vulgaris [C], Haematococcus pluvialis [H], and Spirulina platensis [S]) and a mixed culture of micro algae's (AM; a mixture of Scenedesmus sp. and Chlorella sp. ) was studied in the presence and absence of the enterotoxigenic bacterium Escherichia coli k99 strain (ETEC, [E]) as an in vitro challenge. The E.coli-k99 strain with adhesion factor F41 (41/32) was isolated from a mastitis-infected udder. Gene expression was measured in cultured intestinal porcine epithelium cells (IPECJ2 cell line) after 2 and 6 hours incubation with C, H, and S extracts, and after 6 hours with the AM extract, using “whole genome” porcine microarrays. Gene expression profiles were analysed using functional bioinformatics programs to provide insight in the biological processes induced by micro algae extracts.

2019-03-14 | GSE113365 | GEO

Autotoxicity mechanism of Oryza Sativa: Microarray analysis of rice plants in response to allelochemical ferulic acid

Project description:Autotoxicity plays an important mechanism in regulating plant productivity. Ferulic acid (FA) is phytotoxic and was identified in extracts and residues of rice plants as a candidate for rice allelochemicals. To help characterize the autotoxicity mechanism of rice, we present the first large-scale, transcriptomic analysis of rice root responses to ferulic acid.

2013-07-22 | GSE34899 | GEO

Evaluation of the potential of non-starch soluble polysaccharides from 3 algae to modulate the immune response and metabolic state in the intestine

Project description:Non-starch soluble polysaccharides (NSPs) produced by yeasts are used in animal nutrition to improve health and performance. However, the magnitude of the effect may be dependent upon the quantity and the composition of the polysaccharides. As seaweeds are attractive sources of NSPs, this study was set up to evaluate their potential to improve intestinal health. The effect of NSP extracts prepared from Saccharomyces cerevisiae containing β-glucan and mannan (PSY1, positive control) or a mixture of mannanoligosaccharides (PSY2, positive control), micro algae containing β-glucan (PSA1), brown macro algae containing fucoidan and laminarin (PSA2), and green macro algae containing ulvan (PSA3) on intestinal porcine epithelial cells J2 (IPEC-J2) was studied in the presence and absence of the enterotoxigenic bacterium Escherichia coli k99 strain (ETEC) as an in vitro challenge. The E.coli-k99 strain with adhesion factor F41 (41/32) was isolated from a mastitis-infected udder. In addition, a mixed extract prepared from vegatal orgin supplemented with phenolic compounds from vegetal origin, zinc and selenium (9631), and ZnO were tested to compare responses to NSP extracts. Gene expression was measured in IPEC-J2 cells after 2 and 6 hours of incubation using “whole genome” porcine microarrays (submission as a conference paper at the SEAGRICULTURE 2017 6th International Seaweed Conference).

2023-06-01 | GSE100838 | GEO

Effects of Leuzea carthamoides (maral root) in MCF-7 cells

Project description:Products derived from roots of Leuzea carthamoides DC. (maral root) are being promoted as anti-aging and adaptogenic. The phytoecdysteroids are considered as active principles with numerous beneficial effects, but little is known about the pharmacological properties of Leuzea extracts. We, therefore, investigated the effects of a lipophilic Leuzea root extract on ER+ breast cancer MCF-7 cells at transcriptional level in comparison to 17beta-estradiol and the ER antagonist tamoxifen. With the extract 241 genes were regulated more than 1.5 fold. We observed gene regulation in an anti-proliferative and pro-apoptotic manner. Additionally, expression of several enzymes with oxidoreductase activity was induced including a very strong increase of the phase I enzyme CYP1A1, a possible link to the AhR pathway, which might explain other expression results, e.g. the correlated regulation of about 20 genes by Leuzea compared to 17beta-estradiol. Keywords: treatment with Leuzea carthamoides

2008-09-17 | GSE6803 | GEO

Direct regulation of T cell exhaustion by NFAT [RNA-Seq]

Project description:During persistent antigen stimulation, CD8+ cytolytic T cells (CTL) show a gradual decrease in effector function, or “exhaustion”, which impairs the immune response to tumors and infections. Here we show that NFAT, a transcription factor with an established role in T cell activation, in parallel controls a second transcriptional program conferring the characteristic features of CD8+ T cell exhaustion, including upregulation of genes encoding inhibitory cell surface receptors and diminished TCR signaling. Expression of an engineered NFAT1, which induces this negative regulatory program in the absence of the effector program, interferes with the ability of CD8+ T cells to protect against Listeria infection or attenuate tumor growth in vivo. NFAT elicits this second program of gene expression in large part by binding to a subset of the sites occupied by NFAT during a typical effector response, suggesting that a balance between the two pathways determines the outcome of TCR signaling. Understanding the role of CA-RIT-NFAT1 in T cells

2015-02-13 | E-GEOD-64408 | biostudies-arrayexpress