Project description:Notch signaling is an evolutionarily conserved signaling pathway. Notch1 signaling has been shown to potentially paly an important role in cancer development and progression. To illustrate the underlying regulating mechanisms of Notch1 activation in NSCLC, the intracellular domain of Notch1 receptor (NICD1) was overexpressed in A549 cell line and the RNA-sequences were performed.
Project description:Genomic changes in low and highly metastatic A549 cells were analyzed by 500K SNP arrays. A large number of genomic alterations were present in A549 cells but no significant differences were observed between the low or highly metastatic A549 cell lines. We generated a NSCLC line with highly increased propensity to form tumor nodules in murine lungs after intravenous injections. Extravasation and growth at a distant site are important parts of the metastatic process and we regarded these as a surrogate marker for in vivo aggressiveness and potential metastatic capability. A549 lung asdenocarcimona cell line with initially low metastatic potential was used for this purpose; these cells formed multiple small nodules in NOD/SCID mice after first i.v.-injection, round 1 (R1). Removal of tumor nodules from the lungs and subsequent re-injection led to a rapid increase in metastatic capacity. A highly aggressive phenotype which was stable over time was evident after three rounds (R3) of in vivo selection for the A549 cell line.
Project description:This study aimed to elucidate the relationships between NRF2 and disease progression and provide insight into NRF2-mediated cancer progression/tumorigenesis by identifying novel genes and pathways regulated by NRF2 in A549 NSCLC cells
Project description:Affymetrix high-density oligonucleotide microarray analysis was performed to analyse cisplatin-induced gene expression changes in A549 NSCLC cells. Cells were treated with 50 µM of cisplatin for 1 hour and incubated for a further 10 hours in drug-free media before the gene expression changes were investigated. Results show that cisplatin induced changes in the expression of genes involved in apoptosis, cell cycle control, DNA repair and transcription. Experiment Overall Design: Gene expression changes in response to cisplatin were analysed by Microarray technology in A549 NSCLC cells. Cells were treated with 50 µM of cisplatin (or drug-free media) for 1 hour and incubated for a further 10 hours in drug-free media before the cisplatin-induced gene expression changes were investigated. Control and cisplatin-treated samples were collected from three independent experiments.
Project description:A549 and H1299 cell lines were transfected with hMOF specific siRNA or control siRNA, and Affymetrix oligonucleotide microarray was conducted to systematically determine downstream targets regulated by hMOF. Two NSCLC cell lines (four samples) transfected with hMOF specific siRNA or control siRNA
Project description:To identify radiation-induced miRNAs, we initially profiled human miRNA expression in NSCLC A549 and H1299 cells treated with X-ray radiation using miRNA microarrays. Indeed, we observed multiple dysregulated miRNAs following radiation in NSCLC cell lines.