Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA776403 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:We developed a method to isolate pure circulating tumor cells (CTC). RNA from such CTCs isolated from the peripheral blood of metastatic breast cancer patients and gene expression was performed using cDNAmicroarray. we used cDNA array to compare gene expression of CTCs with normal epithelial and breast tumor samples normal blood vs. breast tumor
2014-12-18 | E-GEOD-45962 | biostudies-arrayexpress
Project description:We developed a method to isolate pure circulating tumor cells (CTC). RNA from such CTCs isolated from the peripheral blood of metastatic breast cancer patients and gene expression was performed using cDNAmicroarray. we used cDNA array to compare gene expression of CTCs with normal epithelial and breast tumor samples
2014-12-18 | GSE45962 | GEO
Project description:In this study, we evaluate gene expression patterns in single circulating tumour cells discovered in liquid biopsies from breast cancer patients. The experiment included cells collected from early, metastatic and relapsed breast cancer patients.
2024-12-31 | GSE268201 | GEO
Project description:Analyses of circulating tumor cells (CTC) cultured from blood of patients with cancer may allow individualized testing for susceptibility to therapeutic regimens. We established ex vivo cultures of CTCs from six patients with metastatic estrogen receptor-positive breast cancer and performed RNA-Seq on those cultures. One sample each from six metastatic estrogen receptor positive breast cancer patients
2014-07-11 | E-GEOD-55807 | biostudies-arrayexpress
Project description:RNA-seq data of non-metastatic and metastatic lymph nodes from six breast cancer patients
| PRJDB15979 | ENA
Project description:Background MicroRNA expression is frequently dysregulated in cancer and it could be used potentially as a disease classifier and a prognostic tool in cancer. It has been reported that the cancer associated specific microRNAs were stably detected in blood. The objective of this study was to discover a panel of circulating microRNAs as potential ER+/HER2- breast cancer biomarkers. Methods We compared levels of circulating microRNAs in blood samples from 11 ER+/HER2- advanced breast cancer patients with age-matched 5 control subjects by using microarray-based expression profiling. We validated the level of microRNAs by real-time quantitative polymerase cycle reaction (RT-qPCR) in 40 control subjects, 180 early breast cancer patients (EBC), and 52 metastatic breast cancer patients (MBC). Then, we assessed the association between the levels of microRNA and clinical outcomes of ER+/HER2- metastatic breast cancer. Background MicroRNA expression is frequently dysregulated in cancer and it could be used potentially as a disease classifier and a prognostic tool in cancer. It has been reported that the cancer associated specific microRNAs were stably detected in blood. The objective of this study was to discover a panel of circulating microRNAs as potential ER+/HER2- breast cancer biomarkers. Methods We compared levels of circulating microRNAs in blood samples from 11 ER+/HER2- advanced breast cancer patients with age-matched 5 control subjects by using microarray-based expression profiling. We validated the level of microRNAs by real-time quantitative polymerase cycle reaction (RT-qPCR) in 40 control subjects, 180 early breast cancer patients (EBC), and 52 metastatic breast cancer patients (MBC). Then, we assessed the association between the levels of microRNA and clinical outcomes of ER+/HER2- metastatic breast cancer. Controls: 5 cases; ER +/HER2- breast cancer patients : 11 cases
2013-12-12 | E-GEOD-53179 | biostudies-arrayexpress
Project description:We developed a method to isolate pure circulating tumor cells (CTC). RNA from such CTCs isolated from the peripheral blood of metastatic breats cnacer patients and gene expression was performed using cDNAmicroarray. we used cDNA array to compare gene expression of CTCs with normal epithelial and breast tumor samples CTCs vs. breast tumors
2014-12-18 | E-GEOD-45964 | biostudies-arrayexpress
Project description:Metastatic cancer cells, originating from cancer stem cells with metastatic capacity, utilize nutrient flexibility to overcome the hurdles of metastatic cascade. However, the nutrient supply for maintaining the stemness potentials of metastatic cancer cells remains unknown. Here, we revealed that metastatic breast cancer cells maintain stemness and initiate metastasis upon detachment via uptaking and oxidating lactate. In detached metastasizing breast cancer cells, lactate was incorporated into tricarboxylic acid cycle and boosted oxidative phosphorylation, and then promoted the stemness potentials via α-KG-DNMT3B-mediated SOX2 hypomethylation. Moreover, lactate was uptake and oxidated in mitochondria by CD147/MCT1/LDHB complex, whose existence correlates to the stemness potentials and tumor metastasis in breast cancer patients. An intracellularly expressed single chain variable fragment targeting mitochondrial CD147 (mito-CD147 scFv) effectively disrupted mitochondrial CD147/MCT1/LDHB complex, inhibited lactate-induced stemness potentials, depleted circulating breast cancer cells and reduced metastatic burden, suggesting a promising clinical application in reducing lactate-fueled metastasis.
2025-01-09 | PXD059617 |
Project description:Clusters of circulating tumor cells (CTC-clusters) are present in the blood of patients with cancer but their contribution to metastasis is not well defined. Here, we first use mouse models to demonstrate that breast cancer cells injected intravascularly as clusters are more prone to survive and colonize the lungs than single cells. Primary mammary tumors comprised of tagged cells give rise to oligoclonal CTC-clusters, with 50-fold increased metastatic potential, compared with single CTCs. Using intravital imaging and in vivo flow cytometry, CTC-clusters are visualized in the tumor circulation, and they demonstrate rapid clearance in peripheral vessels. In patients with breast cancer, presence of CTC-clusters is correlated with decreased progression-free survival. RNA sequencing identifies the cell junction protein plakoglobin as most differentially expressed between clusters and single human breast CTCs. Expression of plakoglobin is required for efficient CTC-cluster formation and breast cancer metastasis in mice, while its expression is associated with diminished metastasis-free survival in breast cancer patients. Together, these observations suggest that plakoglobin-enriched primary tumor cells break off into the vasculature as CTC-clusters, with greatly enhanced metastasis propensity. RNA-seq from 29 samples (15 pools of single CTCs and 14 CTC-clusters) isolated from 10 breast cancer patients
2014-07-11 | E-GEOD-51827 | biostudies-arrayexpress
Project description:Several single-cell studies have reported transcriptomic, genomic and epigenomic dysregulation in breast cancer tissue. However, the peripheral immune landscape of breast cancer patients remains poorly understood. We report the analysis of the single-cell transcriptomes of more than 110,000 peripheral blood mononuclear cells (PBMCs) of healthy and metastatic breast cancer patients. Integrated analysis revealed depleted memory B cells (BMEM) and T cell subpopulations, including transitional CD8 T, CD4 naïve, CD4 ribosome and MAIT cells in the circulating immune landscape of metastatic breast cancer patients. Nevertheless, metastatic breast cancer patients showed marked enrichment of pro-inflammatory NKG7 high monocytes, M1 macrophages, migratory myeloid, T memory stem cells (TSCM), CD4 T effector memory (TEM) and CD4 T central memory (TCM) cells. Further, interrogation of single-cell transcriptomes based on metastatic disease state, i.e. stable vs progressive, revealed distinct compositional and transcriptional changes in PBMCs correlated with the metastatic burden. The antigen inexperienced CD4 naïve T cells and cytotoxic MAIT cells are further depleted in the progressive metastatic stage. Surprisingly, the pro-inflammatory classical monocytes and CD4 T effector memory (TEM) cells are also depleted in the progressive metastatic state, indicating their potential role in stable metastatic disease. Lastly, the receptor-ligand relationships, such as cell-cell contact, ECM-receptor interactions, and cytokine transcription profiles, were tightly associated with metastatic burden. Collectively, our study provides unique molecular insight into the peripheral immune system operating in metastatic breast cancers and identified novel surrogate biomarkers of metastatic disease.
2025-03-08 | GSE291055 | GEO