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Expression data from cultured human ovarian carcinoma cell lines with and without Cisplatin treatment

ABSTRACT: Chemo-resistance to platinum such as cisplatin is critical in the treatment of ovarian cancer. Recent evidences have linked epithelial-mesenchymal transition (EMT) with the drug resistance as a contributing mechanism. The current study explored the connection between cellular responses to cisplatin with EMT in ovarian cancer. 46 ovarian carcinoma cell lines expression data with and without Cisplatin treatment.

ORGANISM(S): Homo sapiens

SUBMITTER: Tuan Zea Tan

PROVIDER: E-GEOD-47856 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Epithelial-mesenchymal status renders differential responses to cisplatin in ovarian cancer.

Miow Q H QH Tan T Z TZ Ye J J Lau J A JA Yokomizo T T Thiery J-P JP Mori S S

Oncogene 20140526 15

Chemoresistance to platinums, such as cisplatin, is of critical concern in the treatment of ovarian cancer. Recent evidence has linked epithelial-mesenchymal transition (EMT) as a contributing mechanism. The current study explored the connection between cellular responses to cisplatin and EMT in ovarian cancer. Expression microarrays were utilized to estimate the EMT status as a binary phenotype, and the transcriptional responses of 46 ovarian cancer cell lines to cisplatin were measured at dosa ...[more]

PMID: 24858042

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Expression data from cultured human ovarian carcinoma cell lines with and without Cisplatin treatment

Project description:Chemo-resistance to platinum such as cisplatin is critical in the treatment of ovarian cancer. Recent evidences have linked epithelial-mesenchymal transition (EMT) with the drug resistance as a contributing mechanism. The current study explored the connection between cellular responses to cisplatin with EMT in ovarian cancer.

2014-07-29 | GSE47856 | GEO

MicroRNA profiling of cisplatin-resistant and cisplatin-sensitive ovarian cancer cells

Project description:Platinum resistance is a major drawback in the treatment of ovarian cancer. Evidence suggests that microRNAs are key players in the initiation, progression, and drug resistance of cancer cells. However, the precise miRNAs dysregulated and contributing to platinum resistance in ovarian cancer cells have not been fully elucidated. Here, we conducted a miRNA expression profiling of cisplatin-sensitive (A2780) and cisplatin-resistant (CP20 and CIS) ovarian cancer cells to identify potential miRNAs involved in platinum resistance.

2020-11-20 | GSE161784 | GEO

Unexpected roles of ATP11B in platinum resistance

Project description:Platinum compounds display clinical activity against a wide variety of solid tumors. However, resistance to these agents is a major limitation in cancer therapy. Reduced platinum uptake and increased platinum export are examples of resistance mechanisms that limit the extent of DNA damage. Here, we report the discovery and characterization of the role of ATP11B, a P-type ATPase membrane protein, in cisplatin resistance. ATP11B gene silencing restored the sensitivity of ovarian cancer cell lines to cisplatin in vitro. Combined therapy of cisplatin and ATP11B-siRNA significantly decreased cancer growth in mice bearing ovarian tumors derived from cisplatin-sensitive and -resistant cells. In vitro mechanistic studies on cellular platinum content and cisplatin efflux-kinetics indicated that ATP11B enhances the export of cisplatin from cells. The co-localization of ATP11B with fluorescent cisplatin and with vesicular trafficking proteins such as syntaxin-6 (STX6) and vesicular associated membrane protein 4 (VAMP4) strongly suggests that ATP11B contributes to secretory vesicular transport of cisplatin from Golgi to plasma membrane. In conclusion, silencing ATP11B expression might be a therapeutic strategy to overcome cisplatin resistance. We performed the transfection of control-siRNA and ATP11B-siRNA to both cisplatin-sensitive A2780-PAR and cisplatin-resistant A2780-CP20 cells respectively.

2013-01-23 | E-GEOD-43694 | biostudies-arrayexpress

Expression data from A2780 (cisplatin-sensitive) and Round5 A2780 (cisplatin-resistant) cell lines.

2009-04-17 | E-GEOD-15372 | biostudies-arrayexpress

Unexpected roles of ATP11B in platinum resistance

2013-01-23 | GSE43694 | GEO

miRNA profiling from C13K and OV2008 ovarian cancer cell lines

Project description:Cisplatin-resistance is a major cause of treatment failure in human ovarian cancer. Besides lots of genes involved, emerging evidences demonstrate that miRNAs contribute to cisplatin-resistance in cancer. We measured the miRNA expression profiles of cisplatin-resistant C13K ovarian cancer cell line compared with its cisplatin-sensitive OV2008 parent cell line using miRNA microarrays.

2018-09-28 | GSE120256 | GEO

Promoter CpG island methylation data from A2780 (cisplatin-sensitive) and Round5 A2780 (cisplatin-resistant) cell lines.

Project description:Cisplatin and carboplatin are the primary first-line therapies for the treatment of ovarian cancer. However, resistance to these platinum-based drugs occurs in the large majority of initially responsive tumors, subsequently resulting in a poor long-term prognosis. To model the onset of drug resistance, and investigate the DNA methylation alterations associated with cisplatin resistance, we treated clonally derived, drug-sensitive A2780 epithelial ovarian cancer cells with increasing concentrations of cisplatin. After several cycles of drug selection, the isogenic drug-sensitive and -resistant pairs were subjected to global CGI methylation microarray analyses. We treated clonally derived, drug-sensitive A2780 epithelial ovarian cancer cells with increasing concentrations of cisplatin. After several cycles of drug selection, the isogenic drug-sensitive and -resistant pairs were subjected to global CGI methylation analyses by differential methylation hybridization (DMH) using a customed 44K promoter CGI microarray.

2010-06-19 | E-GEOD-15373 | biostudies-arrayexpress

Expression data from A2780 (cisplatin-sensitive) and Round5 A2780 (cisplatin-resistant) cell lines.

2009-04-17 | GSE15372 | GEO

Promoter CpG island methylation data from A2780 (cisplatin-sensitive) and Round5 A2780 (cisplatin-resistant) cell lines.

2009-04-17 | GSE15373 | GEO

Telomeric Allelic Imbalance Indicates Defective DNA Repair and Sensitivity to DNA-Damaging Agents

Project description:DNA repair competency is one determinant of sensitivity to certain chemotherapy drugs, such as cisplatin. Cancer cells with intact DNA repair can avoid the accumulation of genome damage during growth and also can repair platinum-induced DNA damage. We sought genomic signatures indicative of defective DNA repair in cell lines and tumors and correlated these signatures to platinum sensitivity. The number of subchromosomal regions with allelic imbalance extending to the telomere (NtAI) predicted cisplatin sensitivity in vitro and pathologic response to preoperative cisplatin treatment in patients with triple-negative breast cancer (TNBC). In serous ovarian cancer treated with platinum-based chemotherapy, higher levels of NtAI forecast a better initial response. We found an inverse relationship between BRCA1 expression and NtAI in sporadic TNBC and serous ovarian cancers without BRCA1 or BRCA2 mutation. Thus, accumulation of telomeric allelic imbalance is a marker of platinum sensitivity and suggests impaired DNA repair. SNP data from 27 and 40 primary triple negative breast cancer tumor samples from two clinical trials treated with cisplatin and cisplatin + bevacizumab. Labeling, hybridization and data processing was performed by Affymetrix using 70k MIP arrays and 330k MIP arrays. In the cisplatin trial, matched normal samples based on blood from all patients and an additional three samples based on FFPE negative lymph nodes were used as references (30 normal references in total). In the cisplatin+bevacizumab trial, mathed normal samples based on blood from 10 patients were used as references.

2012-03-22 | E-GEOD-28330 | biostudies-arrayexpress

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