Project description:Bone marrow derived macrophages from C57BL/6 mice were stimulated into M1 and M2 polarization state. Analysis of BMDMs from LysMcre;FoxO1Fl/FL mice and control littermates. Results provide insight into the regulatory role of FoxO1 during macrophage polarization. BMDMs were stimulated with 100ng/ml LPS plus 20ng/ml IFN-γ into M1 polarization, and stimulated with 10ng/ml IL-4 plus 10ng/ml IL-13 into M2 polarization. Both for 24 hours. Unstimulated cells as M0 state.
Project description:Analysis of differentially expressed genes in colon cancer cell lines SW480 and HT29 with and without stably expressed ERbeta gene, with and without 10ng/mL TNFa treatment for 2 and 24 hours.
Project description:Hypoxia-inducible factor 1-alpha (HIF1a) is a basic helix-loop-helix PAS domain-containing protein, and is considered as the master transcriptional regulator of cellular response to hypoxia and inflammatory stimuli. Studies over the year have demonstrated that HIF1a play a critical role in innate immune cell response to infection and injury. Here we isolated bone marrow of 3 mice per group (Lyz2cre and Lyz2cre:HIF1aFl/Fl) and differentiated into macrophages by culturing them in M-CSF containing media. These cells were stimulated with 100ng/ml LPS, 10ng/ml IFNgamma, 10ng/ml IL4 or 10ng/ml IL10 for 18 hours. Total RNA was isolated and subjected to RNAseq analyses.
Project description:primary human monocytes were isolated from peripheral blood using Stemcell CD14 magnetic cell seperation and incubated over night with 10ng/ml M-CSF and then differentiated with 100ng/ml RANKL for 24hrs in the absence or prescence of 25 mg/ml SIC (immunecomplexes consisting of SpA and IgG) or the appropriate concentration of IgG or SpA alone.
Project description:Analysis of differentially expressed genes in colon cancer cell lines SW480 and HT29 with and without stably expressed ERbeta gene, with and without 10ng/mL TNFa treatment for 2 and 24 hours. Total RNA obtained from colon cancer cell lines SW480 and HT29 with and without stably expressed ERbeta gene, with and without 10ng/mL TNFa treatment for 2 and 24 hours.
Project description:Defects in homocysteine and folate metabolism are associated with increased risks for neural tube and congenital heart defects, cardiovascular disease and stroke, cancers, and neurodegeneration. In many but not all cases, dietary supplementation with folate significantly reduces the severity and incidence of these conditions. Common polymorphisms modulate these metabolic pathways and disease risks, but do not fully account for the particular birth defects and adult diseases that occur in at-risk individuals. To test whether other pathways contribute to disease pathogenesis, we analyzed global and pathway-specific changes in gene expression and levels of selected metabolites after depletion and repletion of dietary folate in two genetically distinct inbred strains of mice. Compared to the C57BL/6J strain, A/J showed greater homeostatic response to folate perturbation by retaining a higher serum folate level and minimizing global gene expression changes. Remarkably, folate perturbation led to systematic strain-specific differences only in the expression profile of the cholesterol biosynthesis pathway and translated to changes in levels of serum and liver total cholesterol. By genetically increasing serum and liver total cholesterol levels in APOE deficient mice, we modestly but significantly improved folate retention during folate depletion, suggesting an interplay between homocysteine and folate metabolism and cholesterol metabolism. Absence of measurable changes in global methylation patterns or amelioration of effects with supplementation with an alternative methyl donor suggest that dietary folate perturbations do not act through large-scale or general changes in methylation. These results suggest that homeostatic responses in cholesterol metabolism contribute to the beneficial effects of dietary folate supplementation. Keywords: time course, stress response, diet, genetic, homeostasis Six-week old female A/J and C57BL/6J mice were purchased from the Jackson Laboratory. All mice were raised on a control diet containing four ppm folic acid (Basal Diet 5755, TestDiet) for one week before the start of studies. Selected mice were then placed on folic acid deficient diet (58C3, TestDiet) containing 1% succinylsulfathiazole, a non-absorbable antibiotic commonly used to suppress folate production by bacteria in the intestine. We had nine different treatment plans per strain with eight replicate mice per treatment. There were four folic acid depletion treatment in which mice were placed on folic acid deficient diet for 1, 2, 7, or 14 days. There were two folic acid repletion treatment in which mice were placed on folic acid deficient diet for 14 days followed by 1 day on control diet and another set of mice on 14 days of folic acid deficient diet followed by 7 days of control diet. There were three control time points in which mice were placed on the control diet for 0, 9, or 22 days. Eight biological replicate liver tissue from each treatment was pooled and total RNA from each pool and total RNA from Universal Mouse Reference RNA (Stratagene) were aminoallyl labeled with Cy3 and Cy5 in duplicate, with reversing of dyes.
Project description:This gene expression microarray analysis is to test how induced Bcl11b expression affect the overall gene expression profile of Comma D Beta Cells in the progenitor (sca1+) and differentiated (Sca1-) population. Comma D beta Cell line was cultured DMEM F12+2% FBS+1% PSA+5ug/ml insulin+10ng/ml EGF in 175 cm2 culture flask overnight, followed by 100ng/ml Doxycycline treatment for 1 day. Then, cells were trypsinized and subjected for flow sorting of Sca1+ and Sca- population. RNA was then extracted and subjected to microarray gene expression analysis.
Project description:5-aza-2'-deoxycytidine (DAC) treated and untreated Caco-2 cells were compared using an expression microarray. Total RNA from untreated Caco-2 cells was labeled with Cy3, and total RNA from DAC-treated Caco-2 cells was labeled with Cy5.
Project description:Low intracellular folate levels diminish the growth rate of HT-29 human colon cancer cells. This is accompanied by a metabolic shift from cytosolic glycolysis towards mitochondrial oxidative phosphorylation, as demonstrated by a lower lactate production and an increased mitochondrial oxygen consumption rate. To obtain insight in the molecular effects underlying these changes, the steady state gene expression profiles of HT-29 cells with different intracellular folate concentrations were compared. The gene expression profile of HT-29 cells with low intracellular folate levels (grown for 3 weeks in 10 ng/ml folic acid (PGA)) was clearly distinct from that of the other exposure conditions, which provide sufficient intracellular folate levels (100 ng/ml PGA, 10 ng/ml methyltetrahydrofolate (MTHF) or 100 ng/ml MTHF). Intracellular folate deficiency, contrary to expectation, did not lead to major changes in expression of genes involved in energy metabolism. This suggests that the shift towards mitochondrial oxidative phosphorylation is not mediated at the transcription level. Furthermore, only minor changes in the expression of folate metabolism related genes were observed. The changes that were observed were consistent with nucleotide salvage and in agreement with nucleotide need of the slow-growing folate-deficient HT-29 cells. The major observed effects were on cell cycle related gene expression, which was increased and interferon-responsive gene expression, which was reduced. The increase in cell cycle related gene expression seems compensatory to the reduced cell growth. Down-regulation of the interferon-response may be explained by decreased expression of signal transducer and activator of transcription 1 upon folate deficiency. Keywords: dose response, folic acid, HT-29 cells, human