Project description:Embelin (15 uM) induced alterations in the gene expression profile was studied in A549 lung cancer cells during the initial stages of apoptosis (4h following treatment)
Project description:Resveratrol, a natural phytoestrogen found in red wine and a variety of plants, is reported to have protective effects against lung cancer, however there is very little work directed towards the understanding of the mechanism of action of resveratrol in lung cancer. In this study we used an experimental approach to understand the biological activity and molecular mechanisms of resveratrol in A549 lung cancer cells. Gene expression profiles were compiled using an oligonucleotide microarray to determine altered expression levels in resveratrol treated cells. Keywords: Genetic modification of A549 cells in response to resveratrol
Project description:Embelin (15 uM) induced alterations in the gene expression profile was studied in A549 lung cancer cells during the initial stages of apoptosis (4h following treatment) As embelin (15 uM) induces apoptosis as early as 4h time period, we performed microarray analysis to study embelin-induced differential gene expression as early as 4h to identify the responsible pathways.
Project description:Citreoviridin can suppress lung cancer cell growth by inhibiting the activity of ectopic ATP synthase, but has limited effect on normal cells. However, the mechanism of citreoviridin triggering dynamic molecular responses in cancer cells remains unclear. Here, we performed gene expression profiling to elucidate the dynamic changes after citreoviridin treatment in cells.
Project description:To investigate the difference of miRNA expression between lung cancer cell A549 and its DDP-resistant cell strain A549/DDP, we have employed miRNA microarray expression to discover the difference expression of miRNAs of A549 cells and A549/DDP. We conducted RT-qPCR to examine the expression levels of top differential expressed miRNAs, namely, miR-197-5p, miR-4443, miR-642a-3p, miR-27b-3p and miR-100-5p, confirming low variability between two methods. The A549/DDP was established from A549 in our laboratory, by exposing A549 to gradually increasing DDP concentrations, until the final concentration at 1μg/ml. To avoid the influence of drug to the A549/DDP cells, they were cultured in a drug-free medium for at least two weeks before gene expression analysis. miRNA expression of A549 and A549/DDP was then analzyed.
Project description:We compared the effects of mPGES-1 inhibitor Compound III (CIII) with the cyclooxygenase (COX)-2 inhibitor NS-398 on protein and lipid profiles in interleukin (IL)-1β induced A549 lung cancer cells using mass spectrometry. Inhibition of mPGES-1 decreased PGE2 production and increased PGF2α and thromboxane B2 (TXB2) formation, while inhibition of COX-2 decreased the production of all three prostanoids. Our proteomics results revealed that CIII downregulated multiple canonical pathways including eIF2, eIF4/P70S6K, and mTOR signaling, compared to NS-398 that activated these pathways.
Project description:Human lung cancer cell lines A549 and H358 were obtained from (Biobank of Medical University of Graz) and cultured in RPMI 1640 (R0883; Sigma) supplemented with 10% fetal bovine serum (FBS; Gibco), 5 mM glutamine and 5 mM Pen Step, and sub-cultured regularly. For siRNA mediated knock-down of GAPDH, 150,000 A549 and H358 cells were seeded in triplicates of a six-well plate and transfected upon reaching ca. 60% confluency with silencerTM siRNA kit targeting GAPDH or non-target control (AM4605; Thermo), using RNAiMax (Thermo) and according to the manufacturer’s instructions for 6-well plate scale. For GAPDH inhibition, 150.000 A549 and H358 cells were seeded in six replicates per condition, then treated with 10 µM koningic acid (KA) or vehicle control (dmso). 48 h post transfection or 24 h post KA treatment, cells were harvested in 500 µl of harvesting solution (80% methanol in 50 mM ammonium acetate with 2.5 mM N-ethylmaleimide) and processed according to one-pot redox approach.
Project description:To investigate the difference of miRNA expression between lung cancer cell A549 and its DDP-resistant cell strain A549/DDP, we have employed miRNA microarray expression to discover the difference expression of miRNAs of A549 cells and A549/DDP. We conducted RT-qPCR to examine the expression levels of top differential expressed miRNAs, namely, miR-197-5p, miR-4443, miR-642a-3p, miR-27b-3p and miR-100-5p, confirming low variability between two methods.