Project description:Cold atmospheric pressure plasma (CAP) is known as a source of biologically active agents, such as reactive oxygen species (ROS) and reactive nitrogen species (RNS). Recent medical investigations have focused on applying CAP to cancer treatment. There is also growing evidence that exposure of cells to CAP or CAP-activated medium induces apoptosis in cancer cells, and ROS and/or RNS are considered to be effective agents to CAP-induced apoptosis. More recently, we demonstrated that Ar-CAP or Ar containing 2.5 % of N2 (Ar-N2-CAP) significantly induced apoptosis in human lymphoma U937 cells. However, a detailed molecular mechanism underling the induction of apoptosis by CAP in cancer cells is unclear. In the present study, to identify genes involved in the induction of apoptosis by CAP in human lymphoma U937 cells, global-scale gene expression analysis was performed using a GeneChip® system.
Project description:Cold atmospheric pressure plasma (CAP) is known as a source of biologically active agents, such as reactive oxygen species (ROS) and reactive nitrogen species (RNS). Recent medical investigations have focused on applying CAP to cancer treatment. There is also growing evidence that exposure of cells to CAP or CAP-activated medium induces apoptosis in cancer cells, and ROS and/or RNS are considered to be effective agents to CAP-induced apoptosis. More recently, we demonstrated that Ar-CAP or Ar containing 2.5 % of N2 (Ar-N2-CAP) significantly induced apoptosis in human lymphoma U937 cells. However, a detailed molecular mechanism underling the induction of apoptosis by CAP in cancer cells is unclear. In the present study, to identify genes involved in the induction of apoptosis by CAP in human lymphoma U937 cells, global-scale gene expression analysis was performed using a GeneChip® system. Human lymphoma U937 cells were treated with Ar-CAP or Ar-N2-CAP. Total RNA samples were prepared from the cells, and quality of the RNA was analyzed using a Bioanalyzer 2100. Gene expression was analyzed by an Affymetrix GeneChip® system with a Human Genome U133-plus 2.0 array. Sample preparation for array hybridization was carried out as described in the manufacturerâs instructions.
Project description:Cold atmospheric plasma is assembled out of various components such as UV-radiation, electrons, ions and an electromagnetic field at low temperature. In recent years cold atmospheric plasma gains interest as a medical tool used for improved healing of chronic wounds. In order to examine the impact of cold atmospheric plasma on the melanogenesis in human skin, the gene expression signature of differently treated lightly pigmented primary human melanocytes was analysed. Melanocytes were either treated in vitro indirectly by cold atmospheric plasma or irradiated by UV-radiation. After 2 h incubation the microarray analysis was performed.
Project description:Genome wide DNA methylation profiling of estrogene receptor negative breast cancer cell line MDA-MB-231, treating atmospheric cold plasma (plasma). The Illumina Infinium Human Methylation 450k Bead chip was used to obtain DNA methylation profiles across approximately 450,000 CpGs. This profiling indicates that plasma induces epigenetic and cellular changes. Genomic DNA obtained from MDA-MB-231 where effected by cold plasma.
Project description:Genome wide DNA methylation profiling of estrogene receptor postive breast cancer cell line MCF-7, treating atmospheric cold plasma (plasma). The Illumina Infinium Human Methylation 450k Bead chip was used to obtain DNA methylation profiles across approximately 450,000 CpGs. This profiling indicates that plasma induces epigenetic and cellular changes. Genomic DNA obtained from MCF-7 where effected by cold plasma.
Project description:Anisomycin is known as a potent apoptosis inducer by activating JNK/SAPK and inhibiting protein synthesis during translation. However, only few details are known on the mechanism of apoptosis induced by this compound. Genes in apoptosis induced by anisomycin in human leukemia U937 cells were investigated by using an Affymetrix GeneChip system. DNA fragmentation and phosphatidylserine externalization assays clearly demonstrated that anisomycin induced apoptosis in a time- and concentration- dependent manner. Of 22,283 probe sets analyzed, this compound down-regulated 524 probe sets and up-regulated 523 by a factor 1.5 or greater. Keywords: anisomycin, gene expression, Human lymphoma U937 cell
Project description:genom-wide expression profiling of MCF-7, MCF-7 and CAP-treated MCF-7 cell. In result, cold atmospheric plasma different effect the CAP-treated MCF-7 breast cancer cell.
Project description:Genom-wide expression profiling of MCF-7, MCF-7 and CAP-treated MCF-7 cell. In result, cold atmospheric plasma different effect the CAP-treated MCF-7 breast cancer cell.
Project description:Genome wide DNA methylation profiling of estrogene receptor postive breast cancer cell line MCF-7, treating atmospheric cold plasma (plasma). The Illumina Infinium Human Methylation 450k Bead chip was used to obtain DNA methylation profiles across approximately 450,000 CpGs. This profiling indicates that plasma induces epigenetic and cellular changes.
