ABSTRACT: This sample is a control for the J1, R1 and V6.5 ES samples. The DR4 cell type acts as a feeder cell for stem cells and as such is a small contaminant of the embryonic stem cell growth environment. Keywords: other
Project description:This sample is a control for the J1, R1 and V6.5 ES samples. The DR4 cell type acts as a feeder cell for stem cells and as such is a small contaminant of the embryonic stem cell growth environment. Experiment Overall Design: this experiment include 1 samples and 6 replicates
Project description:Comparison of gene expression profiles of J1 embryonic stem cells and J1 embryoid bodies. This study should reveal genes that, when expressed, are responsible for the maintenance of the stem cell phenotype. Keywords: other
Project description:Comparison of gene expression profiles of J1 embryonic stem cells and J1 embryoid bodies. This study should reveal genes that, when expressed, are responsible for the maintenance of the stem cell phenotype. Experiment Overall Design: this experiment include 2 samples and 12 replicates
Project description:To know exactly how SB431542 contribute to mouse embryonic stem cells (mESCs) undifferentiated state maintenance, microarray experiment for DMSO mock treated and SB431542 treated J1 mESCs was performed
Project description:To know exactly how SB431542 contribute to mouse embryonic stem cells (mESCs) undifferentiated state maintenance, microarray experiment for DMSO mock treated and SB431542 treated J1 mESCs was performed J1 mESCs maintained in medium containing 1000 U/mL LIF and supplemented without or with SB431542 for 24 hours, then total RNA was extracted for analysis.
Project description:Microarray analyses identified 713 genes whose expression increased or decrease by 1.5-fold with a P value <0.01 in response to exposure to JH for 3-12 hr. 497 were up-regulated, and 228 were down-regulated. 12 genes showed differentially regulated pattern that depended on the time of exposure to JH. 73 of these genes (57 genes up-regulated and 17 genes down-regulated) showed the presence of DR4 element in their promoter regions. We also screened the promoter regions of genes whose products are distributed in different cellular locations and various functional groups and found that the DR4 element is present in 275 out of 2850 genes screened. The distribution of DR4 element containing genes varied depending on both cellular location and gene function. The genes whose products are localized to the nucleus or cytoplasm showed higher proportion of DR4 element containing genes when compared to the genes coding for products localized to the membrane. Genes belonging to immune response and ligand activated receptor functional groups showed higher number of genes that contained DR4 elements when compared to the genes belonging to protein kinase or transmembrane receptor functional groups. The DR4 elements identified in the promoter regions of D. melanogaster genes bound to the nuclear proteins isolated from JH III-treated Drosophila L57 cells. In addition, the expression of DR4 element containing genes identified from various functional groups was induced by JH III in Drosophila mbn2 cells grown in the medium containing 1 µM JH III. Presence of DR4 element in JH-responsive genes is conserved across species. This study also demonstrates the feasibility of using genome-wide analysis for identification of genes regulated by various hormones and other signaling molecules. Keywords: Time course
Project description:An 11-point time course study on differentiating embryoid bodies from a murine J1 embryonic stem cell line. The time course includes 0 hr, 6 hr, 12 hr, 18 hr, 24 hr, 36 hr, 48 hr, 4 days, 7 days, 9 days and 14 days. Keywords: Time course