Project description:To investigate the TNF-α in the regulation of L929 cells.We performed gene expression profiling analysis using data obtained from RNA-seq of L929 cells activated by TNF-α.
Project description:This series includes arrays from two separate experiments where the gene expression profile of mock treated L929 cells was compared to that of L929 cells that had been infected with wildtype versus nt3A mutant Venezuelan equine encephalitis virus replicon particles (VRP). Total RNA was isolated from all samples at 5 hour post-infection. Keywords: virus infection-induced gene expression changes
Project description:Bone marrow-derived macrophages (BMDMs) are a key model system for studying macrophage biology in vitro. Commonly used methods to differentiate macrophages from bone marrow are treatment with either recombinant M-CSF or the supernatant of L929 cells, which secrete M-CSF. However, little is known about the composition of L929 conditioned media (CM) and how it affects BMDM phenotype. Here, we used quantitative mass spectrometry to characterise the kinetics of protein secretion from L929 cells over a two-week period. While M-CSF is very abundant in L929 CM, we identified several other immune-regulatory proteins at surprisingly high abundance. L929 CM induced a slightly pre-activated phenotype and the expression of a number of known innate immune proteins in macrophages. This resource will be valuable to all researchers using L929 CM for the differentiation of BMDMs.
Project description:To explore gene expression profiles of cells sensitive to necrosis (such as L929 cells) and those sensitive to apoptosis (such as NIH3T3 cells), we conducted expression microarray analysis of L929 cells and NIH3T3 cells.
Project description:This study aimed to characterize global proteome changes induced by MDM2 knockdown in L929 mouse fibroblast cells. Whole-cell lysates from mock-treated control cells and MDM2 knockdown cells were subjected to label-free quantitative proteomic analysis using high-resolution LC–MS/MS. The resulting dataset provides a comprehensive resource for investigating MDM2-regulated protein networks and pathways.
Project description:This series includes arrays from two separate experiments where the gene expression profile of mock treated L929 cells was compared to that of L929 cells that had been infected with wildtype versus nt3A mutant Venezuelan equine encephalitis virus replicon particles (VRP). Total RNA was isolated from all samples at 5 hour post-infection. Experiment Overall Design: L929 cells were mock treated or infected at an MOI of 5 with either wildtype or nt3A mutant null-VRP, and total RNA was isolated at 5 hpi using the UltraSpec reagent protocol as described above. The UNC-CH Functional Genomics Core Facility provided Affymetrix sample preparation and hybridization services, hybridizing the samples to Affymetrix Mouse Expression 430A (MOE430A) GeneChip arrays, which include analysis of ~22,600 genes. Affymetrix GeneChip Microarray Suite 5.0 software was used for washing, scanning, and basic analysis, with sample quality assessed by examination of 3â to 5â intensity ratios of certain genes. Expression analysis files created by Microarray Suite were imported into GeneSpring 6.2 (Silicon Genetics) for further gene expression analysis and filtering. Two independent array studies were completed, and gene lists were compiled representing only those genes that were up- or downregulated by greater than 2-fold in replicate analyses.
Project description:To explore gene expression profiles of cells sensitive to necrosis (such as L929 cells) and those sensitive to apoptosis (such as NIH3T3 cells), we conducted expression microarray analysis of L929 cells and NIH3T3 cells. Experiment Overall Design: Total RNA of 2 samples of unstimulated L929 cells or 2 samples of unstimulated NIH3T3 cells were extracted by Trizol followed by RNeasy. The quantity, purity and integrity of RNA were evaluated by UV spectrophotometry and RNA-nano Bioanalyzer. Sample processing and hybridization on Mouse Genome 430 2.0 GeneChip microarrays (Affymetrix) were performed according to manufacturerâs instructions. Genes that are differentially expressed in L929 cells relative to NIH3T3 cells were identified as having an FDR-adjusted p-value <0.05 and a fold-change >1.5.
Project description:Microarray expression profilling of mouse primary mixed cortical/hippocampal neurons, primary fibroblasts and L929 cells to compare ISGs signature in disctinct cell types Primary mixed cortical/hippocampal neurons, primary fibroblasts (MEFs) and L929 cells were mock-treated or treated with 5U/mL of IFN-beta and RNA was harvested after 24 hours. For neurons and fibroblast, 2 samples were analyzed for each condition.