Human fetal chylothorax: pleural fluid vs. ascites fluid
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE33872 | GEO | 2012/12/31
SECONDARY ACCESSION(S): PRJNA148361
REPOSITORIES: GEO
Similar Datasets
Project description:Transcriptional profile comparison of the pleural and ascites fluids in hydropic fetuses affected with chylothorax. Two-condition experiment, pleural fluid vs. ascites fluid. Comparison of the transcriptional profile between sample collected before and after OK-432 treatment and between fetuses with and without a G404S mutation in the ITGA9 gene
2012-12-31 | E-GEOD-33872 | biostudies-arrayexpress
Project description:Background: Malignant ascites is often present at diagnostic in women with advanced ovarian cancer (OC) and its presence is associated with a worse outcome. Human peritoneal mesothelial cells (HPMCs) are key components of malignant ascites. Although the interplay between HPMCs and OC cells is believed to be critical for tumor progression, it has not been well characterized. The purpose of this study was to assess the effect of ascites on HPMCs and clarify the role of HPMCs in OC progression. Methods: Human OC ascites and benign peritoneal fluids were assessed for their ability to stimulate HPMC proliferation. Conditioned medium from ascites- and benign fluid-stimulated HPMCs were compared for their ability to attenuate apoptosis induced by TNF-related apoptosis-inducing ligand (TRAIL). We conducted a comparative analysis of global expression changes in ascites-stimulated HPMCs using Agilent oligonucleotide microarrays. Results: As compared to benign peritoneal fluids, malignant ascites stimulated the proliferation of HPMCs. TRAIL-induced apoptosis was attenuated in OC cells exposed to conditioned medium from ascites-stimulated HPMCs as compared to OC cells exposed to conditioned medium from benign fluid-stimulated HPMCs. A total of 649 genes were differentially expressed in ascites-stimulated HPMCs. Based on a ratio of more than 1.5-fold and a P < 0.05, 484 genes were up-regulated and 165 genes were down-regulated in ascites-exposed HPMCs. Stimulation of HPMCs with OC ascites resulted in differential expression of genes mainly associated with the regulation of cell growth and proliferation, cell death, cell cycle and cell assembly and organization, compared to benign peritoneal fluids. Top networks up-regulated by OC ascites included Akt and NF-M-NM-:B survival pathways whereas vascular endothelial growth factor (VEGF) pathway was down-regulated. Conclusions: The results of this study not only provide evidence supporting the importance of the interplay between cancer cells and HPMCs but also define the role that the tumor environment plays in these interactions. The expression profiles from human peritoneal mesothelial cells (HPMC) cultures exposed to peritoneal fluids and ovarian cancer ascites were compared using the Agilent Whole Human Genome Oligonucleotide microarrays, containing 44,000 genes. Microarrays were performed on HPMCs exposed to 3 malignant ascites from women with advanced (stage III/IV) serous OC and two benign peritoneal fluids. First, we generated lists of significantly up-regulated and down-regulated genes that were differentially expressed between OC ascites (OVC346, OVC508 and OVC509) and control OV370 peritoneal fluid. Then, the set of genes that were commonly expressed between control peritoneal fluids (OV370 and OV401) were subtracted from the first list of genes to generate a dataset of differentially expressed genes between malignant ascites and benign peritoneal fluids.
2014-04-14 | E-GEOD-55065 | biostudies-arrayexpress
Project description:Background: Malignant ascites is often present at diagnostic in women with advanced ovarian cancer (OC) and its presence is associated with a worse outcome. Human peritoneal mesothelial cells (HPMCs) are key components of malignant ascites. Although the interplay between HPMCs and OC cells is believed to be critical for tumor progression, it has not been well characterized. The purpose of this study was to assess the effect of ascites on HPMCs and clarify the role of HPMCs in OC progression. Methods: Human OC ascites and benign peritoneal fluids were assessed for their ability to stimulate HPMC proliferation. Conditioned medium from ascites- and benign fluid-stimulated HPMCs were compared for their ability to attenuate apoptosis induced by TNF-related apoptosis-inducing ligand (TRAIL). We conducted a comparative analysis of global expression changes in ascites-stimulated HPMCs using Agilent oligonucleotide microarrays. Results: As compared to benign peritoneal fluids, malignant ascites stimulated the proliferation of HPMCs. TRAIL-induced apoptosis was attenuated in OC cells exposed to conditioned medium from ascites-stimulated HPMCs as compared to OC cells exposed to conditioned medium from benign fluid-stimulated HPMCs. A total of 649 genes were differentially expressed in ascites-stimulated HPMCs. Based on a ratio of more than 1.5-fold and a P < 0.05, 484 genes were up-regulated and 165 genes were down-regulated in ascites-exposed HPMCs. Stimulation of HPMCs with OC ascites resulted in differential expression of genes mainly associated with the regulation of cell growth and proliferation, cell death, cell cycle and cell assembly and organization, compared to benign peritoneal fluids. Top networks up-regulated by OC ascites included Akt and NF-κB survival pathways whereas vascular endothelial growth factor (VEGF) pathway was down-regulated. Conclusions: The results of this study not only provide evidence supporting the importance of the interplay between cancer cells and HPMCs but also define the role that the tumor environment plays in these interactions.
2014-04-14 | GSE55065 | GEO
Project description:Ovarian cancer is a major cause of cancer mortality among women largely due to late diagnosis of advanced stage metastatic disease. More extensive molecular analysis of metastatic ovarian cancer is needed to identify post-translational modifications of proteins particularly associated with metastatic disease so that we can better understand the metastatic process and identify potential therapeutic targets. Proteins are the target of many recently developed cancer treatments, but an often neglected aspect of biomarker discovery is protein glycosylation, especially those involving tumor-associated carbohydrate antigens (TACAs) such as sialyl-Lewis(x) (SLe(x) and sialyl-Lewis(a) (SLe(a), which have been identified in various cancers. Although it is already known that considerable changes in protein glycosylation are major contributors to the initiation, progression and metastasis of tumors, specifics about glycosylation changes particularly important to the metastatic process are still lacking. In this report we describe the results of a combined glycomic and proteomic study of metastatic ovarian cancer (OC) ascites fluids. Glycoproteins in ascites fluid were enriched by affinity binding to lectins (ConA or WGA) and other affinity matrices. Separate glycomic and proteomic analyses were performed as well as glycopeptide analyses. Relative abundances of different N-glycan groups and proteins were identified from original ascites fluids and corresponding lectin bound samples. Levels of biomarkers CA125, MUC1 and fibronectin were also monitored in these samples by Western blot analysis. N-glycan analysis of ascites fluids showed the presence of large, highly fucosylated and sialylated, complex and hybrid glycans, some of which were not observed in normal serum. Proteins in OC ascites that were more abundant or not present in the serum control, were haptoglobin, fibronectin, lumican, fibulin, hemopexin, ceruloplasmin, alpha-1-antitrypsin and alpha-1-antichymotrypsin. Glycopeptide analysis identified N- and O-glycans in clusterin, hemopexin, and fibulin that were present in OC ascites.
2016-08-15 | PXD003794 | Pride
Project description:Soluble HLA (sHLA) molecules released to the plasma, carry their original peptide cargo and provide insight into the protein synthesis and degradation schemes of their source cells and tissues. Other body fluids, such as pleural effusions, may also contain sHLA-peptide complexes, and can potentially serve as a source of tumor antigens since these fluids are drained from the tumor microenvironment. Thus, we developed a methodology for purifying and analysing large pleural effusion sHLA class I peptidomes of patients inflicted with malignancies or benign diseases. The cleared pleural fluids, the cell pellets present in the pleural effusions, and the primary tumor cells cultured from cancer patients’ effusions, were used for immunoaffinity purification of the HLA molecules. The recovered HLA peptides were analyzed by capillary chromatography coupled to tandem mass spectrometry and the resulting LC-MS/MS data was analyzed with the MaxQuant software tool. Large HLA peptidomes were obtained by the analysis of the pleural effusions. The majority of peptides identified from the pleural effusions were defined as HLA ligands that fit the patients’ HLA consensus sequence motifs. The membranal and soluble HLA peptidomes of each individual patient were somewhat similar to each other. Many of the HLA peptides were derived from known tumor-associated antigens, lung-related proteins, and VEGF pathway proteins. Thus, the pleural effusion HLA peptidome of patients with malignant tumors can serve as a rich source of biomarkers for tumor diagnosis and personalized immunotherapy.
2022-05-25 | PXD027766 | Pride
Project description:Peritoneal carcinomatosis with malignant ascites is associated with dismal prognosis in gastric cancer. Malignant ascites is the most relevant body fluid in which to seek diagnostic biomarkers for peritoneal carcinomatosis. We aimed to identify and validate ascites-derived circulating microRNAs (miRNAs) that are differentially expressed between liver cirrhosis-associated benign ascites (LC-ascites) and gastric cancer-associated malignant ascites (GC-ascites). MiRNA expression levels were investigated in three independent cohorts. Overall, 165 ascites samples (73 LC-ascites and 92 GC-ascites) were obtained from the National Biobank of Korea. Initially, microarrays were used to screen the expression levels of 2,006 miRNAs in the discovery cohort (n = 22). Subsequently, quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) analyses were used to validate the expression levels of selected miRNAs in the training (n = 70) and validation (n= 73) cohorts. In addition, the levels of carcinoembryonic antigen (CEA), a commonly used tumor marker, were determined in the ascites samples. Expression levels of miR-574-3p, miR-181b-5p, miR-4481, and miR-181d were significantly lower in the GC-ascites samples than in the LC-ascites samples, and miR-181b-5p showed the best diagnostic performance for GC-ascites (area under the curve [AUC] = 0.798 and 0.846 for the training and validation cohorts, respectively). The diagnostic performance of CEA for GC-ascites was improved if CEA and miR-181b-5p were analyzed together (AUC = 0.981 and 0.946 for the training and validation cohorts, respectively). Overall, we identified ascites-derived circulating miRNAs capable of differentiating non-malignant ascites and GC-ascites, and demonstrated that the combined use of miR-181b-5p and CEA produces the optimal diagnostic yield.
2019-02-12 | GSE126399 | GEO
Project description:Ovarian cancer is characterized by transcoelomic metastasis into the peritoneal cavity. The peritoneal malignant ascites is enriched with ovarian cancer cells and a small amount of tumor-associated immune cells which create a unique microenvironment actively contributing to progression of the disease. However, it remains unclear how cancer cells communicate to its local environment under the influence of chemotherapy. To address this issue, we performed LC-MS/MS analyses of several primary cultures of ovarian cancer cells from chemonaive malignant ascites incubated for 3 days with autologous pre- or post-chemotherapy ascitic fluids. Enrichment analysis identified prominent upregulation of proteins associated with pathways of DNA repair and cell cycle regulation in tumor cells incubated with ascitic fluids after chemotherapy. Consistently with these data, ascites after therapy increased the resistance of ovarian cancer cells to cisplatin. These findings demonstrate that under stress condition cancer cells can secrete signaling molecules into the extracellular space and contribute to the emergence of tumor chemoresistance during short time period.
2024-05-29 | PXD045647 | Pride
Project description: Not available
| S-EPMC5913985 | biostudies-literature
Project description:Pleural fibrosis is defined as an excessive deposition of extracellular matrix (ECM) that results in destruction of the normal pleural tissue architecture and compromised function. However there is currently no effective medication for pleural fibrosis. Understanding the detailed mechanisms of pleural fibrosis is an important unmet need which could lead to the identification of new targets for treatment of this condition. microRNAs (miRNAs) play an important role in the posttranscriptional control of gene expression. In our study, cellular fractions from TBPE contained activities capable of promoting fibrosis-like behavior in pleural mesothelial cells (PMCs), the goal of this study is to compare the exosomal miRNA composition of TBPE and TPE. We isolated exosomes from transudative pleural effusion and tuberculous pleural effusions and performed miRNA sequencing. Our study represents the first detailed analysis of exosomal miRNA composition of TBPE and TPE with biologic replicates, generated by miRNA-Seq technology.
2024-04-14 | GSE172150 | GEO
Project description:Objectives: Carbapenem-resistant Acinetobacter baumannii (CRAB) are one of the most difficult pathogen to treat. The only drug recently approved by the FDA that is active against CRAB is cefiderocol. However, recent studies have shown higher all-cause mortality rate in the group of patients treated with cefiderocol, that may be due to heteroresistance, a phenotype characterized by the survival of a small proportion of cells in a population seemingly isogenic. Previous studies showed that adding human fluids to CRAB cultures can lead to CFDC heteroresistance. To better understand the nature of this phenomenon, we carried out molecular and phenotypic analyses of CRAB heteroresistant bacterial subpopulations. Methods: The CRAB strain AMA40 was cultured in the presence of cefiderocol and human pleural fluid (HPF) to isolate heteroresistant variants. Two of them, AMA40 IHC_1 and IHC_2, were subjected to whole genome sequencing and transcriptomic analysis to identify the mutations and transcriptomic changes responsible for the development of cefiderocol resistance. The impact of mutations on the pharmacodynamic activity of cefiderocol was assessed by susceptibility testing, EDTA and Boronic acid inhibition analysis, biofilm formation, and static time-kill assays. Results: Variants AMA40 IHC_1 and IHC_2 had 53 mutations, forty of which were common to both heteroresistant strains. None of the mutations are located inside genes associated with iron-uptake systems or β-lactam resistance. However, pipA, a gene associated with iron homeostasis in other species, was mutated in heteroresistant strains. Transcriptomic analyses revealed modifications in levels of expression of genes associated with antibiotic resistance. The blaNDM-1, blaADC-2, pbp3, and pbp1 were expressed at higher levels. At the same time, the carO and ompA genes’ expression was reduced. Collateral resistance to amikacin was observed in the heteroresistant variants. Static time-kill assays showed that when CA-MHB was supplemented with human serum albumin, the main protein component of HPF, cefiderocol killing activity was considerably reduced in all three strains. Conclusions: We conclude that heteroresistance to cefiderocol in CRAB, when exposed to fluids containing high HSA, is caused by mutations and modifications in the expression of genes associated with resistance to β-lactams.
2023-03-31 | E-MTAB-12444 | biostudies-arrayexpress