Project description:We have extended our investigation to differential immunogenicity between tolerogenic PVG rats and immunogenic LEW rats by analyzing gene expression in adipose-derived mesenchymal stem cells (ASCs) with LPS stimulation. Furthermore, to establish a direct link between gene expression and immunogenic functional annotation, ASCs from LEW and PVG rats were obtained, and the effects of inherent difference and LPS treatment on global gene expression were evaluated using microarray analyses. We analyzed microarray gene expression profiles of ASCs from 3 LEW and 3 PVG rats of 8-week age and separated ASCs from each individual into four conditions, 24h and 48h control, 24h and 48h with 1 μg/ml LPS stimulation. The total RNA samples of triplicate ASCs isolated from LEW and PVG with and without LPS treatment were pooled in each condition and the global gene expression profiles were analyzed using microarray.
Project description:We have extended our investigation to differential immunogenicity between tolerogenic PVG rats and immunogenic LEW rats by analyzing gene expression in adipose-derived mesenchymal stem cells (ASCs) with LPS stimulation. Furthermore, to establish a direct link between gene expression and immunogenic functional annotation, ASCs from LEW and PVG rats were obtained, and the effects of inherent difference and LPS treatment on global gene expression were evaluated using microarray analyses.
Project description:CD14+ Monocytes from healthy volunteers were purified by MACS (negative selection) and FACSorting and either left untreated or stimulated for 24h and 48h with LPS. THP-1 cells were stimulated for 4h, 24h and 48h with LPS. Glycoproteins were captured with hydrazide chemistry and tryptic and PNGase F-released peptide fractions analyzed by MS/MS. Quantitative assessment revealed differential glycoprotein expression in activated/LPS-tolerized monocytes and naïve monocytes and THP-1 cells.
Project description:RasGRP4 is required for CD117+ DCs to optimally induce certain NK cell-dependent immune responses in vivo and in vitro in response to LPSRasGRP4 expressed in DCs played an important role on NK cell IFN-γ secretion . We used microarrays to detail the global programme of gene expression underlying cellularisation and identified distinct classes of up-regulated or down-regulated genes between the two DCs from WT and RasGRP4 mice respectively upon LPS stimulation. CD117+splenocytes were extracted from WT and RasGRP4 KO mice spleens aged 9-12 weeks and plated in 6-well plates with 1ug/mL of LPS for 0h,6h,12h,24h and 48h repectively for RNA extraction and hybridization on Affymetrix microarrays. Time course.
Project description:We analyzed coding transcript abundance in interscapular brown adipose tissue of mice acclimated to room temperature or 5°C (6h, 24h or 48h).
Project description:Macrophages assemble aggresome-like induced structures or ALIS upon LPS or E. coli mediated TLR4 stimulation. These structures are positive for p62, LC3 and ubiquitinated proteins, form irrespective of autophagy, and persist within the cell system up to 48h. However, their composition is not well known. Our aim was to identify proteins constituting ALIS and establish its functionality in host-defense response under infectious conditions.
Project description:Monocyte exposure to lipopolysaccharide (LPS) induces a transient state in which these cells are refractory to further endotoxin stimulation. Here we demonstrate the transcriptome analysis of in vitro generated LPS refractory monocytes upon subsequent re-exposure to LPS for different time points. Total RNA obtained from human monocyte exposure treated with LPS for 3h, 6h, or 24h, subsequent to endotoxin tolerization or not.
Project description:BMDMs of indicated phenotypes were stimulated with LPS for 24h and analyzed or restimulated with LPS for additional 3h and analyzed. In some experiments 1mM itaconate was added at 4h of LPS first stimulation.
Project description:4plex_barley_2017_01 - transcriptomic assay on embryos after barley seeds gamma_irradiation - Why radiation exposure on seeds at low doses causes stimulation of plant growth after germination? - Barley dry seeds of variety “Nur” were irradiated by gamma-rays (Co-60) at doses 20 Gy (stimulatory) and 100 Gy (inhibitory). Immediately after irradiation we put seeds for germination to Petri dishes containing water filter paper; embryos were taken 2h after irradiation, embryos with embrionic roots were taken 24 and 48h after irradiation. The following comparisons have been made: non-irradiated (0 Gy), 2h vs. 20 Gy, 2h; 0 Gy, 24h vs. 20 Gy, 24h; 0 Gy, 48h vs. 20 Gy, 48h; 0 Gy, 24h vs. 100 Gy, 24h. Three independent biological replicates were used.
Project description:Comparison of time-series gene expression pattern in hippocampus of hypoxia tolerant or sensitive rats. At 12 time-points ({0h, 1h, 3h, 12h, 24h, 48h} x 2) after ischemia operation, microdissected CA1 regions of the two groups were respectively subjected to oligonucleotide-based microarray analysis. MIAME information can be obtained at the web link. Keywords = Rattus norvegicus Keywords = hippocampus Keywords = ischemic tolerance Keywords: time-course
