Acute lymphoblastic leukemia (ALL) is an heterogeneous disease comprising several subentities that differ for both immunophenotypic and molecular characteristics. Over the years, the biologic understanding of this neoplasm has largely increased. Gene expression profiling has recently allowed to identify specific signatures for the different ALL subsets and permitted identification of pathways deregulated by a given lesion. MicroRNAs (miRNAs) are small non-coding RNAs which play a pivotal role in several cellular functions. In this study, we investigated miRNA and gene expression profiles in a series of adult ALL cases by microarray analysis and combined them by bioinformatic analysis. Interestingly, those miRNAs which are differentially expressed between the ALL classes accounted for a large proportion of miRNA/mRNA expression pairs identified by the above analysis. Moreover, the analysis highlighted several putative miRNA targets involved in apoptosis and cell-cycle regulation.
Characterization of B- and T-lineage acute lymphoblastic leukemia by integrated analysis of MicroRNA and mRNA expression profiles.
Sex, Age, Specimen part
View SamplesIn order to identify miR-21 targets by a biochemical high-throughput method, we immunopurified RISC Complex and associated mRNAs in both control and miR-21 overexpressing Jurkat cells.
miR-21 is a negative modulator of T-cell activation.
Cell line
View SamplesT-lymphocyte activation is efficiently mimicked in vitro by treatment with anti CD3 / anti CD28 antibodies. We report miR-21 induction upon CD3/CD28 stimulation of primary T-lymphocytes. In order to assess the function of miR-21 in T-lymphocytes we interfered with miR-21 function by lentiviral transduction of a miR-21 sponge construct. MRNA profile of miR-21 sponge and control transduced T-lymphocytes 48hrs after stimulation.
miR-21 is a negative modulator of T-cell activation.
No sample metadata fields
View SamplesWe used microarrays to detail the global programme of gene expression underlying CS1-regulated biological processes including increased cell adhesion and cell proliferation.
CS1 promotes multiple myeloma cell adhesion, clonogenic growth, and tumorigenicity via c-maf-mediated interactions with bone marrow stromal cells.
No sample metadata fields
View SamplesStabilized Alpha-Helix peptides of BCL9 HD2 (SAH-BCL9) block BCL9 and B9L interactions with beta-catenin and specifically downregulate Wnt target gene expression.
Targeted disruption of the BCL9/β-catenin complex inhibits oncogenic Wnt signaling.
Specimen part, Cell line, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Increased chronic lymphocytic leukemia proliferation upon IgM stimulation is sustained by the upregulation of miR-132 and miR-212.
Sex, Age, Specimen part, Disease
View SamplesIn order to investigate a potential involvement of miRNAs in BCR stimulation, in the present work we first evaluated their expression following IgM cross-linking in CLL cells, as well as in healthy B lymphocytes. Next, to infer putative miRNA targeting networks, we combined miRNA profiling results with gene expression and functional analyses
Increased chronic lymphocytic leukemia proliferation upon IgM stimulation is sustained by the upregulation of miR-132 and miR-212.
Sex, Age, Specimen part, Disease
View SamplesEvaluation of specific coordinated pattern of transcriptional events consistent with anti-myeloma activity of FK866 (chemical Nampt inhibitor)
Targeting NAD+ salvage pathway induces autophagy in multiple myeloma cells via mTORC1 and extracellular signal-regulated kinase (ERK1/2) inhibition.
No sample metadata fields
View SamplesThe integration of positive and negative intra- and extra-cellular signals dictates whether a cell will proliferate or differentiate. While it is intuitive to speculate that nutrients availability may influence this alternative, a comprehensive complement of the molecular determinants involved in this process has not been elucidated yet. In this study, we will investigate how nutrients (glucose) affect skeletal myogenesis. C2C12 cells will be cultured in high glucose and low glucose conditions, and their differenciation will be studied.
Glucose restriction inhibits skeletal myoblast differentiation by activating SIRT1 through AMPK-mediated regulation of Nampt.
No sample metadata fields
View SamplesHuman monocyte derived dendritic cells matured via galectin-1 or LPS.
Galectin-1-matured human monocyte-derived dendritic cells have enhanced migration through extracellular matrix.
No sample metadata fields
View Samples