Microarray analysis of gene expression profiles in PBHA-treated THP-1 cells after LPS stimulation
ABSTRACT: Using microarray analysis, 219 differentially expressed genes were isolated between the LPS group and LPS/PBHA treatment-group (fold change > or < 1.5). These genes were analyzed by KEGG system to reveal the important issues. The analyses of gene ontology were shown that the genes of the specific classes “Chemokine signaling pathway”, ”Cytokine-cytokine receptor interaction”, ”RIG-I-like receptor signaling pathway”, ”Leukocyte transendothelial migration”, and “MAPK signaling pathway” showed markedly different patterns between both groups by KEGG analysis system. In this study presented here, human THP-1 cells were pretreated with only vehicle (resting group), vehicle and LPS (50 ng/ml), or PBHA (10 μM) and LPS (50 ng/ml). After stimulation, the total cellular RNAs were manipulated for analyses of gene expression.
Project description:Protease-activated receptor-2 (PAR-2), a G protein-coupled receptor activated by trypsin and coagulant factors, plays broad spectrum of physiological and pathological roles especially in cancer development. In this study, we used PAR-2 activating peptide to mimic the action of trypsin to trigger PAR-2 signaling pathway and effects of PAR-2 activation on gene expression in human pancreatic cancer cell line BxPC-3 investigated by microarray analysis. Through DAVID bioinformatic resources, we observed that activated PAR-2-mediated genes are summarized to two different pathways, renal cell carcinoma and NFkB pathway. In renal cell carcinoma pathway, activated PAR-2 dysregulated hypoxia-inducible factors and its target genes, including glucose transporter 1 (GLUT1), transforming growth factor-b (TGF-b) and vascular endothelial growth factor-A (VEGF-A). In addition, activated PAR-2 induced MAPK signaling and transcriptional factors, such as JUN, MAP2K1 and ETS1. The regulation of these genes by PAR-2 assumed that PAR-2 signaling was associated with cancer progression. On the other hand, activated PAR-2 upregulated interleukin-1b (IL-1b) and toll-like receptor 4 (TLR4) related with NFkB activation, which indicated that PAR-2 signaling may cause cancer-related inflammation. In conclusion, PAR-2 may be a factor to regulate cancer progression and inflammation. Two-condition experiment, control cells vs PAR-2 AP-treated cells.
Project description:The rat-tail intervertbral disc cells was incubated with NGF at a concentration of 100 ng/ml/day for a total of five days. Primary culture of 8 weeks rat-tail interverbral disc cells. The control group was incubated with PBS and the experimental group was incubated with NGF at a concentration of 100 ng/ml/day for a total of five days.
Project description:In this study, we investigated the effect of vitamin D supplementation on tumorigenesis in a thioacetamide (TAA)-induced rat intrahepatic cholangiocarcinoma model as vitamin D is known to have a spectrum of anticancer activities. Using PET, we found that tumor formation and progression were suppressed in rats fed a diet supplemented with 6 IU/g vitamin D3(+6D) as compared to the group fed a 2 IU/g vitamin D3 diet (+2D) or controls. Microarray analysis of the tumors that arose revealed that vitamin D supplementation caused significant up- and down regulation in 21 and 16 genes, respectively. There are 9 tissue samples (3 rats in each group labeled as (+6), (+2) and control). Duplicate analysis were used for each sample.
Project description:Differential expression of mRNA were conducted in neuroblastoma cell line SKNDZ, which successfully transduced human miR-125b MYCN-amplification SKNDZ neuroblastoma cell line was transduced with MIRN125B2 gene with lentiviral vector (pLKO.1-puro), and selected by puromycin for 48 hours. Then the total RNA was extracted and analyzed the differential expression of a total of 29,187 genes by Oligonucleotide DNA microarray.
Project description:HO-1 cells denote the cultured rat mesangial cells with heme oxygenase-1 knocked down by RNA interference (using lentiviral vector). GFP cells denote the cultured rat mesangial cells that are transfected with empty lentiviral vector containing GFP cassette. Cells are treated with hydrogen peroxide 100 micromolar for 2 hours, or without. RNA are then harvested for array analysis. Biological replicates are performed (two independent experiment sets). GFP cell and HO-1 cell are untreated, or treated with hydrogen peroxide (100 micromolar for 2 hours).
Project description:Rice seedlings at 3-leaf stage were used for expression analysis in control and salt stressed (incloudling salt treatment for 3, 24hrs and recovery from cold stress for 24hrs) samples. Samples of shoots and roots from biological replicates of both genotypes were generated and the expression profiles were determined using Phalanx Rice OneArray＠ v1. Control and treated biological replicates of salt-tolerant cultivar TNG67 (japonica) and salt-sensitive cultivar TCN1 (indica) were analyzed
Project description:Totally 1,308 miRNAs were examined. Three miRNAs (hsa-miR-1976, 4728-3p, and 877-3p) were upregulated with fold change excess 0.8 and six miRNAs (hsa-miR-4497, -204-3p, -6126, -5787, -1273e, and -1908-3p) were downregulated in the exosome released from camptothecin-treated hepatoma. Comparing between results of these two samples revealed novel miRNA regulation upon anti-cancer drug treatments exosomal miRNAs from CPT-treated hepatoma and unrteated
Project description:We intend to screen altered genes after overexpression of miR-196a in HD transgenic mice. Two transgenic mouse lines were used in this study, including HD transgenic mice and HD transgenic mice overexpressing miR-196a. The mice were all at approximate 12 months of age. At this point, HD transgenic mice showed severve motor dysfunctions, whereas HD transgenic mice overexpressing miR-196a displayed mild motor dysfunctions. We used the striatum tissues from 2 HD transgenic mice and 3 HD transgenic mice overexpressing miR-196a. The mice were all at approximate 12 months of age. Two technique repeats were performed for each sample.
Project description:To predict the different genes, this study compared the gene expression level among the control group, the model group and the treatment groups. In this present study, 20 Wistar rats, weighting 160-180g and as the sex evenly, were randomly divided into five groups: normal control group, model control group , Haizao Yuhu decoction group, Haizao Yuhu decotion lacking Sargassum fusiforme (DL-S) group, and Haizao Yuhu decotion lacking Radix Glycyrrhiza (DL-G) group. Except the rats in control and model groups, the three other groups, which were established as goiter model, were administered appropriate medication at the dose of 1mL/100g for 28 consecutive days. After all animals sacrificed, thyroids were removed and then put in Trizol for microarray experiments.
Project description:Purpose: Acute lung injury (ALI) is a severe clinical disorder characterized by diffused capillary-alveolar barrier damage and noncardiogenic lung edema induced by excessive inflammation reactions. Nogo-B, a member of the reticulon 4 protein family, plays a critical role in modulating macrophages and neutrophils’ function in inflammation. Its role in ALI remains unclear. Methods: Pulmonary expression of Nogo-B was investigated in a LPS-induced ALI mice model. The effects and the underline mechanisms of Nogo-B expression on the severity of lung injury was assessed using histological examination, Bronchoalveolar lavage fluid (BALF) protein and inflammatory cells and cytokines measurement, and microarray analysis. Results: Nogo-B was normally highly expressed in the lungs of naïve C57BL/6 mice. Intra-tracheal instillation of LPS significantly repressed the Nogo-B expression in lung tissues and BALF cells of ALI mice. In addition, over-expression of pulmonary Nogo-B using an adenovirus vector which expresses a Nogo-B-RFP-3-flag fusion protein (Ad-Nogo-B) significantly prolonged the survival time of mice challenged with lethal dose of LPS. Histological results and BALF protein measurement convinced that Ad-Nogo-B treated mice had less severity of lung injury and alveolar protein exudation, as compared with control adenovirus treated mice (Ad-RFP). They also had higher MCP-1 secretion and alveolar macrophages infiltration, but lower neutrophils infiltration. Finally, using microarray analysis, we identified a protective gene, PTX3, was highly elevated in Ad-Nogo-B treated mice. Conclusions: Nogo-B played a protective role in LPS-induced ALI, which might exert its role through modulation of inflammatory response and PTX3 secretion. A total of 12 samples from mice treated with or without LPS in the presence of Ad-Nogo-B or Ad-RFP transfection (n=3 for each group)