Gene expression profiling of 13 primary and established human ovarian cancer cell lines
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE63553 | GEO | 2014/11/22
SECONDARY ACCESSION(S): PRJNA268193
REPOSITORIES: GEO
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Project description:Gene expression analysis was also performed on 13 primary and established human ovarian cancer cell lines (A2008, OAW42, OVCAR2, OVCAR3, OVCAR4, OVCAR5, OVCAR8, OVCAR10, OV7M, OV95, PE01, PE04, SKOV3) using Affymetrix Human Gene 1.0 ST Arrays The study focused on ovarian cancer chemokine expressions
2014-11-22 | E-GEOD-63553 | biostudies-arrayexpress
Project description:Analysis of a panel of 41 human ovarian cancer cell lines for the study of ovarian cancer biology, drug response and drug sensitivity. Ovarian cancer cell lines were either obtained from the American Type Culture Collection (ATCC, Manassas, VA) (CAOV3, OV90, OVCAR3, SKOV3, TOV112D), the European Collection of Cell Cultures, Salisbury, England (A2780CP, A2780S); Kyoto University, Kyoto, Japan (CHI, CHIcisR, M41, M41CSR, Tyknu, and TyknuCisR), or were kind gifts from Dr. Patricia Kruk, Department of Pathology, College of Medicine, University of South Florida, Tampa, FL; and Susan Murphy, PhD, Dept of OBGYN/Division of GYN Oncology, Duke University, Durham, NC (A2008, C13, CAOV2, FUOV1, HeyA8, IGR-OV1, IMCC3, IMCC5, MCAS, OV2008, OVCA420, OVCA429, OVCA432, OVCA433, OVCAR4, OVCAR5, OVCAR8, Dov13, BG1, Ovary1847, OVCAR10, OVCAR2, SK-OV-4). Cell lines were maintained in RPMI-1640 (Invitrogen; Carlsbad, California) supplemented with 10% fetal bovine serum (Fisher Scientific; Pittsburg, PN), 1% sodium pyruvate, 1% penicillin/streptomycin (Cellgro; Manassas, VA), and 1% nonessential amino acids (HyClone; Hudson, New Hampshire). Mycoplasma testing was performed every six months following manufacturer’s protocol (Lonza, Rockland ME).
2012-06-30 | E-GEOD-34615 | biostudies-arrayexpress
Project description:To check the profile of exosomal and cellular miRNA in ovarian cancer cell lines, total RNA were extracted from exosomes and cells. Thirteen ovarian cancer cell lines (A2780, ES-2, CAOV3, SKOV3, OV-90, OAW42, MCAS, COV362, RMG-1, RMUG-S, KURAMOCHI, NIH-OVCAR3 and A2780cis) were investigated, and HOSE1, HOSE2 and HOSE3 (human ovarian surface epithelim cell lines) were used as control.
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Project description:Genetic and epigenetic changes contribute to intratumor heterogeneity and chemotherapy resistance in several tumor types. LncRNAs have been implicated, directly or indirectly, in the epigenetic regulation of gene expression. We investigated lncRNAs that potentially mediate carboplatin-resistance of cell subpopulations, influencing the progression of ovarian cancer (OC). Four carboplatin-sensitive OC cell lines (IGROV1, OVCAR3, OVCAR4, and OVCAR5), their derivative resistant cells, and two inherently carboplatin-resistant cell lines (OVCAR8 and Ovc316) were subjected to RNA-sequencing and global DNA methylation analysis. Integrative and cross-validation analyses were performed using external (The Cancer Genome Atlas, TCGA dataset, n=111 OC samples) and internal datasets (n=39 OC samples) to identify lncRNA candidates. A total of 4,255 differentially expressed genes (DEGs) and 14,529 differentially methylated CpG positions (DMPs) were identified comparing sensitive and resistant OC cell lines. The comparison of DEGs between OC cell lines and TCGA-OC dataset revealed 570 genes, including 50 lncRNAs, associated with carboplatin resistance. Eleven lncRNAs showed DMPs, including the SNHG12. Knockdown of SNHG12 in Ovc316 and OVCAR8 cells increased their sensitivity to carboplatin. The results suggest that the lncRNA SNHG12 contributes to carboplatin resistance in OC and is a potential therapeutic target. We demonstrated that SNHG12 is functionally related to epigenetic mechanisms.
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Project description:Genetic and epigenetic changes contribute to intratumor heterogeneity and chemotherapy resistance in several tumor types. LncRNAs have been implicated, directly or indirectly, in the epigenetic regulation of gene expression. We investigated lncRNAs that potentially mediate carboplatin-resistance of cell subpopulations, influencing the progression of ovarian cancer (OC). Four carboplatin-sensitive OC cell lines (IGROV1, OVCAR3, OVCAR4, and OVCAR5), their derivative resistant cells, and two inherently carboplatin-resistant cell lines (OVCAR8 and Ovc316) were subjected to RNA-sequencing and global DNA methylation analysis. Integrative and cross-validation analyses were performed using external (The Cancer Genome Atlas, TCGA dataset, n=111 OC samples) and internal datasets (n=39 OC samples) to identify lncRNA candidates. A total of 4,255 differentially expressed genes (DEGs) and 14,529 differentially methylated CpG positions (DMPs) were identified comparing sensitive and resistant OC cell lines. The comparison of DEGs between OC cell lines and TCGA-OC dataset revealed 570 genes, including 50 lncRNAs, associated with carboplatin resistance. Eleven lncRNAs showed DMPs, including the SNHG12. Knockdown of SNHG12 in Ovc316 and OVCAR8 cells increased their sensitivity to carboplatin. The results suggest that the lncRNA SNHG12 contributes to carboplatin resistance in OC and is a potential therapeutic target. We demonstrated that SNHG12 is functionally related to epigenetic mechanisms.
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Project description:Tumor cell extravasation takes place, similar to leukocytes, in a multi-step process by which cells emigrate from the blood stream through the vascular endothelium into the tissue. Selectins are regarded as the most important molecules for the first capturing step of the cascade. Whether all tumor cells employ selectin dependent adhesion to metastasize or there is an alternative mechanism still is an open question. Comparative transcriptomic analysis of OVCAR8 and SKOV3 cultured cells and revealed that one third of genes encoding proteins involved in the selectin dependent leukocyte like adhesion cascade show lower expression levels in OVCAR8 cultured cells in comparison to that in SKOV3 cultured cells. In contrast to SKOV3 cells, c-Fos overexpression in OVCAR8 cells does not significantly influence expression of the leukocyte like adhesion cascade genes leaving them at similar levels as in control OVCAR8 cells. The intraperitoneal xenograft model of OVCAR8 cells demonstrated that aggressiveness of OVCAR8-derived tumors is not dependent of c-Fos expression level and comparable with that for SKOV3 control tumors. Based on transcriptome array data we analyzed in details expression of genes encoding proteins involved in the leukocyte like adhesion cascade, E- and P-selectin ligands, as well as glycosylation enzymes in both type of tumors. Our results suggest that selectin-dependent mechanism is not the only for adhesion of OVCAR8 ovarian cancer cells. There is at least one additional mechanism of extravasation that does not rely on selectins.
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Project description:Molecular communication between cancer cells and its stromal microenvironment is a key factor for cancer progression. Alongside classic secretory pathways, it has recently been proposed that small membranous vesicles are alternative mediators of intercellular communication. Exosomes carry an effector-rich proteome with the ability to modulate various functional properties of the recipient cell. In this study, exosomes isolated from four epithelial ovarian cancer cell lines (OVCAR3, OVCAR433, OVCAR5 and SKOV3) were characterized using mass spectrometry-based proteomics. Using an optimized workflow consisting of efficient exosome solubilization and the latest generation of proteomic instrumentation, we demonstrate improved detection depth. Systematic comparison of our cancer cell line exosome proteome against public data (ExoCarta) and the recently published NCI 60 proteome revealed enrichment of functional categories related to signaling biology and biomarker discovery.
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