This SuperSeries is composed of the SubSeries listed below.
Association between gene and miRNA expression profiles and stereotyped subset #4 B-cell receptor in chronic lymphocytic leukemia.
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View SamplesHighly homologous B-cell receptors, stereotyped BCR, are expressed in a recurrent fraction of patients with chronic lymphocytic leukemia (CLL). In this study, we investigated the biological and molecular features of leukemic cells from 16 patients utilizing stereotyped subset #4 BCR (IGHV4-34) in a prospective cohort of 462 Binet stage A CLL patients. All subset #4 patients were characterized by the IGHV mutated gene configuration and by the absence of unfavorable cytogenetic lesions, and NOTCH1 and SF3B1 mutations. Gene expression profiling demonstrated a significant downregulation of WDFY4, MF2A and upregulation of PDGFA, FGFR1 and TFEC genes in leukemic cells from subset #4 compared to those from the remaining IGHV-mutated patients. Similarly, in the cells from subset #4 cases there was a specific miRNA expression pattern involving the upregulation of miR-497 and miR-29c. Furthermore transfection of miR-497 mimic in primary leukemic CLL cells induced a downregulation of BCL2, known to be a validated target of this miRNA. Our data identify a distinct gene and miRNA expression profile of the cells from subset #4 patients, providing further evidence for the putative role of BCR in shaping the features of the leukemic cells.
Association between gene and miRNA expression profiles and stereotyped subset #4 B-cell receptor in chronic lymphocytic leukemia.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Clinical monoclonal B lymphocytosis versus Rai 0 chronic lymphocytic leukemia: A comparison of cellular, cytogenetic, molecular, and clinical features.
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View SamplesProspective series of 136 clinical monoclonal B lymphocytosis (cMBL) and 216 chronic lymphocytic leukemia (CLL) Rai 0 patients, were investigated in this study. While the distribution of CD38 and ZAP-70 positivity was similar, IGHV-mutated cases were more frequent among cMBL (P = 0.005). A Cox multivariate analysis on the whole patient cohort showed that cMBL condition was predictive of longer PFS, while CD38 expression and IGHV-unmutated status and CD38 expression correlated significantly with a shorter PFS in cMBL and Rai0-CLL, respectively. Trisomy 12, 11q- and 17p- abnormalities were scanty and of no predictive value in both conditions. Notably, gene and miRNA expression profiling showed no significant differences between cMBL and Rai0-CLL. Furthermore, similar gene and miRNA expression signatures were found in cMBL and Rai0-CLL according to the IGHV gene mutational status: that is, unmutated cases had different signatures from mutated cases, irrespectively of the cMBL or CLL condition. Overall, our study based on a prospective series of patients indicates that no major biological differences exist in cMBL compared to Rai0-CLL, suggesting that this two entities mainly differ for the initial size of the monoclonal cell population which may reflect in the longer time for clonal expansion.
Clinical monoclonal B lymphocytosis versus Rai 0 chronic lymphocytic leukemia: A comparison of cellular, cytogenetic, molecular, and clinical features.
No sample metadata fields
View SamplesThe transcription factor IRF5 is essential for immune defense against pathogens. Here, the authors show that the microtubule-associated factor GEF-H1 plays a critical role in host defense against Listeria monocytogenes in macrophages via activation of the IRF5 kinase IKKe Overall design: Examination of MDP stimulated BMDM from WT, Arhgef2 and Irf5 KO mice
Microbial recognition by GEF-H1 controls IKKε mediated activation of IRF5.
Treatment, Subject
View SamplesSirtuin 3 (SIRT3) is an NAD+-dependent deacetylase downregulated in aging and age-associated diseases such as cancer and neurodegeneration, and high fat diet (HFD)-induced metabolic disorders. Thus, we performed a small molecule screen and identified an unexpected metabolic vulnerability associated with SIRT3 loss. Overall design: RNA sequencing in SV40T immortalized SIRT3 WT (triplicates) and SIRT3 KO MEF (duplicates) lines under normal conditions.
Small-Molecule Screen Identifies De Novo Nucleotide Synthesis as a Vulnerability of Cells Lacking SIRT3.
Specimen part, Cell line, Subject
View SamplesRats were given pulmonary embolism by i.v. injection of 25 micron polystyrene microspheres or 0.01% Tween20 solution as vehicle control
Differential effect of mild and severe pulmonary embolism on the rat lung transcriptome.
No sample metadata fields
View SamplesTime and dose related expression profiles of rat right heart tissue in microsphere bead model for Pulmonary embolism
Transcriptional profile of right ventricular tissue during acute pulmonary embolism in rats.
No sample metadata fields
View SamplesPulmonary vascular occlusions due to thromboemboli can result in pulmonary hypertension and right heart damage. Treatments to clear the vascular obstructions such as i.v. heparain or thrombolytics can resolve the hypertension but right ventricular damage often occurs first. Methods of protecting the right ventricle from hypertensive damage during the course of acute treatment to clear the thromboemboli are needed. Monocyte- and neutrophil-mediated inflammation and fibrosis are associated with chronic right ventricular damage but the pathways involved are not understood. A comprehesive survey of gene expression during chronic pulmonary embolism verses control rats has been conducted in this study.
Transcriptional changes in right ventricular tissues are enriched in the outflow tract compared with the apex during chronic pulmonary embolism in rats.
Sex
View SamplesThere are a few markers available to distinguish hepatic stellate cells (HSCs), portal fibroblasts (PFs), and mesothelial cells (MCs) in the adult mouse liver.
Characterization of hepatic stellate cells, portal fibroblasts, and mesothelial cells in normal and fibrotic livers.
Specimen part
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