Project description:We used microarrays to examine gene expression levels from 131 unrelated CEPH-Utah grandparents with either DMSO or tunicamycin. We measured gene expression levels in immortalized B cells from 131 unrelated CEPH-Utah grandparents. Each individual was treated for 8 hours with either DMSO or with 4 ug/ml of tunicamycin. Gene expression was measured.
Project description:We used microarrays to examine gene expression levels from 95 unrelated CEPH-Utah individuals 0, 2 or 6 hours after treatment with 10Gy of ionizing radiation. We measured gene expression levels in immortalized B cells from 95 unrelated CEPH-Utah individuals. Each individual was treated with 10Gy of ionizing radiation and expression was measured 0, 2 and 6 hour after treatment.
Project description:We used microarrays to examine gene expression levels from 95 unrelated CEPH-Utah individuals 0, 2 or 6 hours after treatment with 10Gy of ionizing radiation.
Project description:The accumulation of unfolded or misfolded proteins in the endoplasmic reticulum (ER) results in the condition called âER stressâ which induces the unfolded protein response (UPR) which is a complex cellular process that includes changes in expression of many genes. Failure to restore homeostasis in the ER is associated with human diseases. To identify the underlying changes in gene expression in response to ER stress, we induced ER stress in human B-cells and then measured gene expression at 10 time-points. We followed up those results by studying cells from 60 unrelated people. We rediscovered genes that were known to play a role in ER stress response and uncovered several thousand genes that are not known to be involved. Two of these are VLDLR and INHBE which showed significant increase in expression following ER stress in B-cells and in primary fibroblasts. To study the links between unfolded protein response and disease susceptibility, we identified ER stress responsive genes that are associated with human diseases and assessed individual differences in ER stress response. Many of the UPR genes are associated with Mendelian disorders such as Wolfram syndrome and complex human diseases including amyotrophic lateral sclerosis and diabetes. Data from two independent samples showed extensive individual variability in ER stress response. Additional analyses with monozygotic twins revealed significant correlations within twin pairs in their responses to ER stress thus showing evidence for heritable variation among individuals. These results have implications for basic understanding of ER function and its role in disease susceptibility. Keywords: array-based gene expression We measured gene expression levels in immortalized B cells from members of 60 unrelated CEPH-Utah grandparents. Each individual was treated for 8 hours with either DMSO or with 4 ug/ml of tunicamycin. Gene expression was measured to identify tunicamycin-responsive genes. To assess whether there is a genetic component to the individual variation in gene expression response to ER stress, we used microarrays to measure expression of genes in 26 monozygotic twin pairs treated with either DMSO or 500 nM thapsigargin for 4 hours.
Project description:We used microarrays to measure the expression levels of genes in irradiated immortalized B cells, lymphoblastoid cells, from members of Centre d'Etude du Polymorphisme Humain (CEPH) Utah pedigrees. Data were collected for cells at baseline and 2 hours and 6 hours after exposure to 10 Gy of ionizing radiation (IR). We measured the expression levels of genes in irradiated immortalized B cells, lymphoblastoid cells, from members of 30 Centre d'Etude du Polymorphisme Humain (CEPH) Utah pedigrees (CEPH 1331, 1332, 1333, 1341, 1344, 1346, 1347, 1349, 1354, 1356, 1357, 1358, 1362, 1408, 1413, 1416, 1418, 1420, 1421, 1423, 1424, 1444, 1447, 1451, 1454, 1456, 1458, 1463, 1477, 1582). Cells were irradiated at 10 Gy in a 137Cs irradiator. Cells were harvested prior to radiation and at 2 and 6 hours following exposure to IR.
Project description:We used microarrays to measure the expression levels of genes in irradiated immortalized B cells, lymphoblastoid cells, from members of Centre dEtude du Polymorphisme Humain (CEPH) Utah pedigrees. Data were collected for cells at baseline and 2 hour and 6 hour after exposure to 10 Gy of ionizing radiation (IR). Experiment Overall Design: We used microarrays to measure the expression levels of genes in irradiated immortalized B cells, lymphoblastoid cells, from members of 15 Centre dEtude du Polymorphisme Humain (CEPH) Utah pedigrees (CEPH 1333, 1341, 1346, 1362, 1408, 1416, 1420, 1421, 1423, 1424, 1444, 1447, 1451, 1454, 1582). Expression data was obtained for cell lines derived from 2 parents and 8 children per each family. Cells were irradiated at 10 Gy in a 137Cs irradiator. Cells were harvested prior to radiation and at 2 and 6 hours following exposure to IR.
Project description:We used microarrays to examine gene expression levels from members of 45 CEPH-Utah pedigrees. Keywords: array-based gene expression We measured gene expression levels in immortalized B cells from members of 45 CEPH-Utah pedigrees. For some cell lines, RNA extracts were hybridized twice, representing technical replicates. For these cell lines, we take the average signal intensity as a measure of relative abundance of a gene. These gene expression levels were then used in genome-wide linkage analyses to identify genetics determinants of gene expression. CEL files were lost for 3 Samples GSM420949, GSM421101, and GSM421103.
Project description:We used microarrays to measure the expression levels of genes in irradiated immortalized B cells, lymphoblastoid cells, from members of Centre d'Etude du Polymorphisme Humain (CEPH) Utah pedigrees. Data were collected for cells at baseline and 2 hour and 6 hour after exposure to 10 Gy of ionizing radiation (IR).
Project description:We used microarrays to measure the expression levels of genes in irradiated immortalized B cells, lymphoblastoid cells, from members of Centre d'Etude du Polymorphisme Humain (CEPH) Utah pedigrees. Data were collected for cells at baseline and 2 hours and 6 hours after exposure to 10 Gy of ionizing radiation (IR).
