Project description:Outcome prediction classifiers were successfully constructed through expression profiling of a total of 1,329 miRNAs in MKN1, gastric cancer cell line under normoxic and hypoxic conditions. In the study presented here, MKN1 under normoxic and hypoxic conditions was used to acquire expression profiles of a total 1,329 unique miRNAs.
Project description:Outcome prediction classifiers were successfully constructed through expression profiling of a total of 1,329 miRNAs in MKN1, gastric cancer cell line under normoxic and hypoxic conditions.
Project description:MM1S cells have been cultured under normoxic and hypoxic conditions, and gene expression profiling has been performed using the Affymetrix Human Genome U133 Plus 2.0 array.
Project description:MM1S cells have been cultured under normoxic and hypoxic conditions, and gene expression profiling has been performed using the Affymetrix Human Genome U133 Plus 2.0 array. We used microarrays to dissect the possible changes occurring at the mRNA level in normoxic cells versus hypoxic cells.
Project description:Hypoxia is a low oxygen condition that occurs in the developing tumor mass and that is associated with poor prognosis and resistance to chemo- and radio-therapy. The definition of the hypoxia gene signature is fundamental for the understanding of tumor biology, as in the case of neuroblastoma, the most common pediatric solid tumor. The issue of identifying a significant group of variables in microarray gene expression experiments is particularly difficult due to the typical high dimensional nature of the data and great effort has been spent in the development of feature selection techniques. Our main goal is to define a robust hypoxia gene signature in neuroblastoma cell lines. A set of 11 neuroblastoma cell lines were cultured under normoxic and hypoxic conditions for 18 hours, and their gene expression profiles were measured with Affymetrix GeneChip HG-U133 Plus 2.0. We used the l1-l2 regularization framework in order to select the significant probesets defining hypoxic versus normoxic cell lines.
Project description:Exosomes derived from NSCLC cells under normoxic or hypoxic conditions were compared to identify hypoxic associated enrichment of proteins in exosomes.
Project description:Gene expression of side population (SP) and major population (MP) of myeloma cell lines (RPMI-8226 and KMS-11) cultured under normoxic or hypoxic conditions for 48 h.
Project description:Hypoxic microenvironment plays important roles in the progression of solid tumors including oral squamous cell carcinoma (OSCC). Long noncoding RNAs (lncRNAs) have gained much attention in the past few years. However, it is not clear whether lncRNAs could regulate hypoxia-adaptation of OSCC, and which lncRNAs participate in this process. Using an lncRNA microarray, we analyzed the aberrant lncRNA expression profiles in OSCC tissues compared with paired normal oral mucosa as well as in hypoxic OSCC cells compared with normoxic OSCC cells. Our microarray also identified 942 lncRNAs that were up-regulated and 507 lncRNAs that were down-regulated in cells cultured under hypoxia compared with those cultured under normoxia (Fold Change >= 2.0, P-value <= 0.05). An OSCC cell line Cal-27 was cultured under either 20% O2 (normoxic) or 1% O2 (hypoxic) conditions. Three samples from each group were obtained for microarray study.
Project description:Under hypoxic conditions, nitroimidazole compounds accumulate in cells in their reduced form and have oxygen-mimetic effects, serving as markers of hypoxia and radiosensitizers. The full potential of their bioreductive metabolism, including cytotoxicity for cancer stem cells, has not been sufficiently explored, however. Here we investigated the changes in gene expression induced by treatment with 2-nitroimidazole doranidazole in murine glioma stem cells, under normoxic or hypoxic conditions.