Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA130205 | ENA |
REPOSITORIES: ENA
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Project description:Gene expression profiling was carried out on peripheral blood mononuclear cell mRNA samples collected from 53 female breast cancer patients at 6- or 12-month follow-ups in a randomized controlled trial of Cognitive Behavioral Stress Management or an active control condition. The primary research question is whether gene expression differs in patients treated with Cogntive Behavioral Stress Management vs control conditions. Gene expression profiling was carried out on peripheral blood mononuclear cell mRNA samples collected from 53 female breast cancer patients at 6- or 12-month follow-ups in a randomized controlled trial of Cognitive Behavioral Stress Management or an active control condition. The primary research question is whether gene expression differs in patients treated with Cogntive Behavioral Stress Management vs control conditions. Risk prediction
2012-01-01 | E-GEOD-24079 | biostudies-arrayexpress
Project description:Gene expression profiling was carried out on peripheral blood mononuclear cell mRNA samples collected from 53 female breast cancer patients at 6- or 12-month follow-ups in a randomized controlled trial of Cognitive Behavioral Stress Management or an active control condition. The primary research question is whether gene expression differs in patients treated with Cogntive Behavioral Stress Management vs control conditions.
2012-01-01 | GSE24079 | GEO
Project description:To investigate the differential expression of miRNAs in circulating leukocytes of patients with MMD. The results showed 12 differentially expressed miRNAs in leukocytes of MMD patients compared with controls (fold change > 2.0 and P < 0.05), of which 7 were up-regulated and 5 were down-regulated.
2022-06-23 | GSE178501 | GEO
Project description:Differential diagnosis of adrenocortical adenoma and carcinoma is of pivotal clinical relevance, as the prognosis and clinical management of benign and malignant adrenocortical tumours is entirely different. Circulating microRNAs are promising biomarker candidates of malignancy in several tumours. In the present study we investigate circulating microRNAs in adrenocortical tumours and to evaluate their potential applicability as biomarkers of malignancy. For the miRNA profiling, 8 preoperative plasma samples obtained from patients with adrenocortical adenomas and carcinomas and were studied by microarray.
2013-11-19 | E-GEOD-49674 | biostudies-arrayexpress
Project description:Circulating tumor cells in the peripheral have proven to be independent prognostic factors for overall survival the monitoring of therapeutic success of human breast cancer patients. Postmortem morphologic evidence also points towards the presence of circulating tumor cells in the peripheral blood of dogs with metastatic canine mammary tumors. However, the existence of these cells has not been verified in canines in vivo and they have not been isolated and characterized due to the lack of appropriate and canine specific detection methods. In the present study a panel of 73 genes with high expression levels in canine mammary carcinoma cells and but not in peripheral blood leukocytes were identified using microarray analysis. From this panel, six mRNA markers, AGR2, ATP8B1, CRYAB, F3 and IRX3, were expressed in canine mammary carcinoma cells but not in the peripheral blood of dogs. All six RT-PCR assays, were sensitive enough detect one carcinoma cell admixed in 106 or more peripheral blood leukocytes, a common concentration of circulating tumor cells in the peripheral blood of human breast cancer patients. These five mRNA markers may therefore be used to detect canine mammary circulating tumor cells and to study their spatio-temporal presence in the peripheral blood of canine patients.
2011-12-10 | GSE25586 | GEO
Project description:Circulating tumor cells in the peripheral have proven to be independent prognostic factors for overall survival the monitoring of therapeutic success of human breast cancer patients. Postmortem morphologic evidence also points towards the presence of circulating tumor cells in the peripheral blood of dogs with metastatic canine mammary tumors. However, the existence of these cells has not been verified in canines in vivo and they have not been isolated and characterized due to the lack of appropriate and canine specific detection methods. In the present study a panel of 73 genes with high expression levels in canine mammary carcinoma cells and but not in peripheral blood leukocytes were identified using microarray analysis. From this panel, six mRNA markers, AGR2, ATP8B1, CRYAB, F3 and IRX3, were expressed in canine mammary carcinoma cells but not in the peripheral blood of dogs. All six RT-PCR assays, were sensitive enough detect one carcinoma cell admixed in 106 or more peripheral blood leukocytes, a common concentration of circulating tumor cells in the peripheral blood of human breast cancer patients. These five mRNA markers may therefore be used to detect canine mammary circulating tumor cells and to study their spatio-temporal presence in the peripheral blood of canine patients. Two canine mammary carcinoma cell lines, CMM115 and CMM26, and peripheral blood samples of 3 healthy dog donors were used for microarray analysis. All blood donors were female, showed no signs of infectious or inflammatory disease and did not have mammary gland tumors or any other identifiable tumors at the time of collection. Furthermore, blood cell count and blood chemistry were unremarkable in all dogs.
2011-12-10 | E-GEOD-25586 | biostudies-arrayexpress
Project description:Circulating tumour cells in women with advanced oestrogen-receptor (ER)-positive/human epidermal growth factor receptor 2 (HER2)-negative breast cancer acquire a HER2-positive subpopulation after multiple courses of therapy. In contrast to HER2-amplified primary breast cancer, which is highly sensitive to HER2-targeted therapy, the clinical significance of acquired HER2 heterogeneity during the evolution of metastatic breast cancer is unknown. Here we analyse circulating tumour cells from 19 women with ER+/HER2- primary tumours, 84% of whom had acquired circulating tumour cells expressing HER2. Cultured circulating tumour cells maintain discrete HER2+ and HER2- subpopulations: HER2+ circulating tumour cells are more proliferative but not addicted to HER2, consistent with activation of multiple signalling pathways; HER2- circulating tumour cells show activation of Notch and DNA damage pathways, exhibiting resistance to cytotoxic chemotherapy, but sensitivity to Notch inhibition. HER2+ and HER2- circulating tumour cells interconvert spontaneously, with cells of one phenotype producing daughters of the opposite within four cell doublings. Although HER2+ and HER2- circulating tumour cells have comparable tumour initiating potential, differential proliferation favours the HER2+ state, while oxidative stress or cytotoxic chemotherapy enhances transition to the HER2- phenotype. Simultaneous treatment with paclitaxel and Notch inhibitors achieves sustained suppression of tumorigenesis in orthotopic circulating tumour cell-derived tumour models. Together, these results point to distinct yet interconverting phenotypes within patient-derived circulating tumour cells, contributing to progression of breast cancer and acquisition of drug resistance. Seventy-four single candidate CTCs from two representative ER+/HER2- patients (BRx-42 and BRx-82) and 14 triple negative patients were isolated via micromanipulation and subjected to single-cell RNA-sequencing. Thirteen candidate CTCs expressed PTPRC at a level higher than 10 reads-per-million, so were deemed potential White Blood Cells and therefore dropped from further consideration. Expression profiles of CTCs expressing ERBB2 at a level greater than 10 RPM were compared with those expressing ERBB2 at a level less than 10 RPM.
2016-08-25 | E-GEOD-75367 | biostudies-arrayexpress
Project description:Differential gene expression in circulating leukocytes from chronically lonely individuals
| PRJNA135751 | ENA
Project description:Adolescence is a critical period in cognitive and emotional development, characterized by high levels of social interaction and increases in risk-taking behavior including binge drinking. Adolescent exposure to social stress and binge ethanol have individually been associated with the development of social, emotional, and cognitive deficits, as well as increased risk for alcohol use disorder. Disruption of cortical development by early life social stress and/or binge drinking may partly underlie these enduring emotional, cognitive, and behavioral effects. The study goal is to implement a novel neighbor housing environment to identify the effects of adolescent neighbor housing and/or binge ethanol drinking on (1) a battery of emotional and cognitive tasks (2) adult ethanol drinking behavior, and (3) the nucleus accumbens and prefrontal cortex transcriptome. Adolescent male and female C57BL/6J mice were single or neighbor housed with or without access to intermittent ethanol. One cohort underwent behavioral testing during adulthood to determine social preference, expression of anxiety-like behavior, cognitive performance, and patterns of ethanol intake. The second cohort was sacrificed in late adolescence and brain tissue was used for transcriptomics analysis. As adults, single housed mice displayed decreased social interaction, deficits in the novel object recognition task, and increased anxiety-like behavior, relative to neighbor-housed mice. There was no effect of housing condition on adolescent or adult ethanol consumption. Adolescent ethanol exposure did not alter adult ethanol intake. Transcriptomics analysis revealed that adolescent housing condition and ethanol exposure resulted in differential expression of genes related to synaptic plasticity in the nucleus accumbens and genes related to methylation, the extracellular matrix and inflammation in the prefrontal cortex. The behavioral results indicate that social interaction during adolescence via the neighbor housing model may protect against emotional, social, and cognitive deficits. In addition, the transcriptomics results suggest that these behavioral alterations may be mediated in part by dysregulation of transcription in the frontal cortex or the nucleus accumbens
2023-09-18 | GSE242910 | GEO
Project description:Repeated excessive alcohol consumption increases the risk of developing cognitive decline and dementia. Hazardous drinking among older adults further increases such vulnerabilities. In order to understand the molecular mechanisms underlying alcohol-induced cognitive deficits in older adults, we performed a chronic intermittent ethanol exposure paradigm (ethanol or water gavage every other day 10 times) in 8-week-old young adult and 70-week-old aged rats. While spatial memory retrieval ascertained by probe trials in the Morris water maze was not significantly different between ethanol-treated and water-treated rats in both age groups after the fifth and tenth gavages, behavioral flexibility was impaired in ethanol-treated rats than water-treated rats in the aged group but not in the young adult group. Further proteomic and phosphoproteomic analyses on their hippocampal tissues by tandem mass tag mass spectrometry revealed ethanol-treatment-associated proteomic and phosphoproteomic differences distinct to the aged rats, including the upregulations of Prkcd protein level, several of its phosphosites, and its kinase activity and the same aspects in Camk2a but downregulated, and were enriched in pathways involved in neurotransmission regulation, synaptic plasticity, neuronal apoptosis, and insulin receptor signaling. In conclusion, our behavioral and proteomic results added several candidate proteins and pathways potentially associated with alcohol-induced cognitive decline in aged adults.
2023-03-11 | PXD034443 | Pride