Transcriptomic analysis of ovarian tumor pairs from primary and metastatic lesions
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA741493 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR14916031_1.fastq.gz | Fastqsanger.gz | |||
| SRR14916031_2.fastq.gz | Fastqsanger.gz | |||
| SRR14916032_1.fastq.gz | Fastqsanger.gz | |||
| SRR14916032_2.fastq.gz | Fastqsanger.gz | |||
| SRR14916033_1.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 20 |
Similar Datasets
Project description:Ovarian cancer is one of the most lethal gynaecological malignancies among female population. The high mortality rate of this disease is due to its poor prognosis and most patients present at an advanced stage accompanied with metastasis. The frequent tumor recurrence rate associated with metastasis and chemoresistance are the major obstacles in clinical management of the disease. Different from other solid tumors, ovarian cancer perfers transcoelomic metastasis amd mounting evidence has suggested ovarian cancer patients who have peritoneal metastasis are usually poor prognosis and highly chemoresistant recurrence. In this study, we examined the differential gene expression profile between the primary tumors and their paired metastastic lesions with a view to discover novel target therapies in combating ovarian cancer.
2021-06-26 | GSE178913 | GEO
Project description:The phenomenon that metastatic lesion developed on injured sites has long been recognized in a number of cancers, such as melanoma. The factors associated with wound healing that attract circulating tumor cells have remained unknown, however. A patient with acral lentiginous melanoma presented with a metastatic lesion that appeared 1 month after trauma. To explore the molecular mechanism underlying the promotion of wound metastasis in melanoma, we performed microarray analysis of the metastatic lesions (n = 2) and the primary lesions (n = 3) of the patient. Using Human Genome U133 Plus 2.0 array, we compared global gene expression profiles of tissues derived from the patient’s primary (n = 3) and wound metastatic (n = 2) lesions to search for particular biological functions in genes of which expression intensities were increased in the wound metastasic lesions of melanoma.
2015-06-26 | E-GEOD-62837 | biostudies-arrayexpress
Project description:The phenomenon that metastatic lesion developed on injured sites has long been recognized in a number of cancers, such as melanoma. The factors associated with wound healing that attract circulating tumor cells have remained unknown, however. A patient with acral lentiginous melanoma presented with a metastatic lesion that appeared 1 month after trauma. To explore the molecular mechanism underlying the promotion of wound metastasis in melanoma, we performed microarray analysis of the metastatic lesions (n = 2) and the primary lesions (n = 3) of the patient.
2015-06-26 | GSE62837 | GEO
Project description:Comparison of gene expression profiles between a primary melanoma and an early metastatic specimen from the same patient will provide essential biological insight into early metastatic processes. The DASL (cDNA mediated annealing, selection, extension and ligation) assay has been used to generate gene expression data for 502 cancer-related genes from very small formalin-fixed sentinel node biopsy (SNB) melanoma samples, this data has been further compared with gene expression of the matched formalin-fixed primary melanoma. Tissue was sampled from twenty-five SNB deposits using laser capture microdissection. The mean number of genes detected using DASL with SNB samples was lower than when using a core of primary melanoma tumor (242 versus 434 genes). A large proportion of SNB samples failed (<240 genes detected) the assay (57.7%). Area of tissue microdissected, RNA concentration and qRT-PCR quality control did not predict performance of samples on the array but age of sampled tissue negatively correlated with number of genes detected (p=0.01). For samples that performed successfully, matched primary samples were available for 10 samples. Gene expression profiles correlated between all matched tumor pairs (Spearman’s rho 0.15-0.80, p<0.01), although a number of genes were differentially expressed between nodal and primary tumors in all tumor pairs. This study demonstrates that the DASL assay can be used to generate gene expression data from small formalin-fixed samples, but not consistently. Differentially expressed genes were identified across 10 matched primary and nodal tumor pairs suggesting that the DASL assay could be used to derive essential biological information about early metastasis.
2011-08-02 | GSE31139 | GEO
Project description:Comparison of gene expression profiles between a primary melanoma and an early metastatic specimen from the same patient will provide essential biological insight into early metastatic processes. The DASL (cDNA mediated annealing, selection, extension and ligation) assay has been used to generate gene expression data for 502 cancer-related genes from very small formalin-fixed sentinel node biopsy (SNB) melanoma samples, this data has been further compared with gene expression of the matched formalin-fixed primary melanoma. Tissue was sampled from twenty-five SNB deposits using laser capture microdissection. The mean number of genes detected using DASL with SNB samples was lower than when using a core of primary melanoma tumor (242 versus 434 genes). A large proportion of SNB samples failed (<240 genes detected) the assay (57.7%). Area of tissue microdissected, RNA concentration and qRT-PCR quality control did not predict performance of samples on the array but age of sampled tissue negatively correlated with number of genes detected (p=0.01). For samples that performed successfully, matched primary samples were available for 10 samples. Gene expression profiles correlated between all matched tumor pairs (Spearman’s rho 0.15-0.80, p<0.01), although a number of genes were differentially expressed between nodal and primary tumors in all tumor pairs. This study demonstrates that the DASL assay can be used to generate gene expression data from small formalin-fixed samples, but not consistently. Differentially expressed genes were identified across 10 matched primary and nodal tumor pairs suggesting that the DASL assay could be used to derive essential biological information about early metastasis. Formalin-fixed paraffin-embedded SNB samples and primary tumors were identified from two study sets. In Study 1, population ascertained melanoma patients were recruited to a cohort in the period from 2000 till the present day. Eight positive SNB samples were identified, from patients whose primary tumors had already been sampled for DASL studies. In Study 2, seventeen positive SNB samples were identified in a study designed to identify predictors of sentinel node positivity and relapse (SNB study). One nodal RNA sample, microdissected from a diagnostic H&E slide, was not sent for DASL analysis because of low RNA concentration (0.37 ng/μl), therefore a total of 26 nodal samples (including 2 replicate samples) were supplied to the Illumina DASL service provider. Of the 11 samples successfully yielding gene expression data, 10 had matched primary samples (e.g., Node_1 and Primary_1) for which gene expression data were available and is presented in this data set.
2011-08-01 | E-GEOD-31139 | biostudies-arrayexpress
Project description:CAF from metastatic ovarian cancer (mCAF) vs CAF from non-metastatic ovarian cancer (nmCAF)
| PRJNA798275 | ENA
Project description:Investigation of malignancy-associated expression of gene sets based on ovarian tumour histone modification status. A single serous epithelial ovarian tumour (which was assayed using ChIP-seq to determine histone modification profiles; SRA059358) was profiled using the HGU133 plus 2 GeneChip, along with 8 benign ovarian lesions (1 serous cyst, 3 serous cystadenomas and 4 serous cystadenofibromas) for comparison. Expression levels of genes marked in the tumour with particular histone modifications were compared between the tumour and the benign samples.
2012-10-12 | E-GEOD-41498 | biostudies-arrayexpress
Project description:High-grade serous ovarian cancer (HGSC) is the most lethal histotype of ovarian cancer and the majority of cases present with metastasis and late stage disease. We aimed to better characterize the distinctions between primary and metastatic tumors based on short- or long-term survival.
2023-04-27 | GSE218939 | GEO
Project description:NanoString expression profiling in metastatic ovarian cancer
| PRJNA559825 | ENA
Project description:4 pairs of matched primary versus metastatic tumor tissues from formalin-fixed, paraffin-embedded (FFPE) tissue bank,and two frozen lung tumor tissues from patients with primary orlymph metastasis. Then performed tandem mass tag (TMT) labeling and quantitative mass spectrometry analysis. A549 Cells we used was overexpressed luceiferase and designated as L0,underwent 3rounds selection in vivo to form L2, L6 that were metastatic to the spinal. We cultured L0 cells in "light" medium, L2,L6 in "medium heavy" and "heavy" respectively. Harvesting of cells and combined in 1:1:1 ratio, peptides were seperated using high-PH RPLC and analyzed by LC-MS/MS.
2022-02-17 | PXD025052 | Pride