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BCL6 expression in AITL could be transcriptionally regulated

ABSTRACT: Peripheral T cell lymphoma (PTCL) is a very aggressive disease which currently lacks efficient targeted therapy. New therapeutic strategies are needed to improve the very poor outcome of these patients. However, little is known about the molecular pathogenesis of this disease. In this study, we performed a miRNAs expression profiling analysis of a series of 26 PTCL cases in order to find deregulated pathways or genes that could become therapeutic agents for PTCL patients.

ORGANISM(S): Homo sapiens

PROVIDER: GSE89671 | GEO | 2018/01/01

SECONDARY ACCESSION(S): PRJNA352871

REPOSITORIES: GEO

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Gene expression profiling of human peripheral T cell lymphoma cases vs. reactive lymph nodes

Project description:Peripheral T cell lymphoma (PTCL) is a very aggressive disease which currently lacks efficient targeted therapy. New therapeutic strategies are needed to improve the very poor outcome of these patients. However, little is known about the molecular pathogenesis of this disease. In this study, we performed a gene expression profiling analysis of a series of 38 PTCL cases in order to find deregulated pathways or genes that could become therapeutic agents for PTCL patients. 38 PTCL cases and 6 reactive lymph nodes were hybridized with the Universal Human Reference RNA (Stratagene, La Jolla, CA), which served as the reference sample.

2012-07-31 | E-GEOD-36172 | biostudies-arrayexpress

Gene expression profiling of human peripheral T cell lymphoma cases vs. reactive lymph nodes

Project description:Peripheral T cell lymphoma (PTCL) is a very aggressive disease which currently lacks efficient targeted therapy. New therapeutic strategies are needed to improve the very poor outcome of these patients. However, little is known about the molecular pathogenesis of this disease. In this study, we performed a gene expression profiling analysis of a series of 38 PTCL cases in order to find deregulated pathways or genes that could become therapeutic agents for PTCL patients.

2012-08-01 | GSE36172 | GEO

Gene expression changes induced by the pan-PIM inhibitor ETP-39010 in 4 peripheral T cell lymphoma cell lines

Project description:Peripheral T cell lymphoma (PTCL) is a very aggressive disease which currently lacks efficient targeted therapy. New therapeutic strategies are needed to improve the very poor outcome of these patients. In these study we hypothesized that PIM kinases could be of therapeutic value in PTCL because we found an overexpression of PIM1 and PIM2, but not PIM3, in PTCL cases, cell lines and primary tumoral T cells from Sezary Syndrome patients, compared with reactive lymph nodes and normal T cells from healthy donors, respectively. In order to understand the mechanism of action of this pan-PIM inhibitor in PTCL, 4 cell lines (DERL7, HuT78, SR786 and MyLa) were treated with 10 Î¼M of ETP-39010 for 0, 2, 4, 6, 10 and 24 h, and gene expression profiling was performed. 4 PTCL cell lines (DERL7, HuT78, SR786 and MyLa) were treated with DMSO and 10 Î¼M of the pan-PIM inhibitor ETP-39010, and hybridized using the Universal Human Reference RNA (Stratagene, La Jolla, CA) as the reference sample.

2014-11-14 | E-GEOD-42595 | biostudies-arrayexpress

Gene expression changes induced by the pan-PIM inhibitor ETP-39010 in 4 peripheral T cell lymphoma cell lines

Project description:Peripheral T cell lymphoma (PTCL) is a very aggressive disease which currently lacks efficient targeted therapy. New therapeutic strategies are needed to improve the very poor outcome of these patients. In these study we hypothesized that PIM kinases could be of therapeutic value in PTCL because we found an overexpression of PIM1 and PIM2, but not PIM3, in PTCL cases, cell lines and primary tumoral T cells from Sezary Syndrome patients, compared with reactive lymph nodes and normal T cells from healthy donors, respectively. In order to understand the mechanism of action of this pan-PIM inhibitor in PTCL, 4 cell lines (DERL7, HuT78, SR786 and MyLa) were treated with 10 μM of ETP-39010 for 0, 2, 4, 6, 10 and 24 h, and gene expression profiling was performed.

2014-11-14 | GSE42595 | GEO

Activating Mutation in STAT5 Is Sufficient To Drive PTCL peripheral T-Cell Lymphoma (PTCL)

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2017-10-18 | GSE74176 | GEO

Gene expression of Epstein-Barr Virus (EBV) positive nodal peripheral T cell lymphoma, unspecified (PTCL-U)

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2012-02-01 | E-GEOD-34143 | biostudies-arrayexpress

Genomic characterization of the MPNST

Project description:Malignant peripheral nerve sheath tumor (MPNST) is a rare sarcoma that lacks effective therapeutic strategies. By characterizing recurrent gene copy number aberrations, we gain insight into the most altered pathways with the purpose of scanning possible therapeutic targets. We conducted a microarray-based comparative genomic hybridization profiling of two cohorts of primary MPNST tissue samples including 25 patients treated at The University of Texas MD Anderson Cancer Center and 26 patients from Tianjin Cancer Hospital. All samples had at least 90% tumor content. Commercially available normal genomic DNAs were used as control.

2011-11-26 | E-GEOD-33881 | biostudies-arrayexpress

Gene expression of Epstein-Barr Virus (EBV) positive nodal peripheral T cell lymphoma, unspecified (PTCL-U)

2012-02-01 | GSE34143 | GEO

THZ1 targeting CDK7 suppresses STAT transcriptional activity and sensitizes T-cell lymphomas to BCL2 inhibitors

Project description:Peripheral T-cell lymphomas (PTCL) are aggressive diseases with poor response to chemotherapy and dismal survival. Identification of effective strategies to target PTCL biology represents an urgent need. Here we report that PTCL are sensitive to transcription-targeting drugs, and, in particular, to THZ1, a covalent inhibitor of cyclin-dependent kinase 7 (CDK7). The STAT-signaling pathway is highly vulnerable to THZ1 even in PTCL cells that carry the activating STAT3 mutation Y640F. In mutant cells, CDK7 inhibition decreases STAT3 chromatin binding and expression of highly transcribed target genes like MYC, PIM1, MCL1, CD30, IL2RA, CDC25A and IL4R. In surviving cells, THZ1 decreases the expression of STAT-regulated anti-apoptotic BH3 family members MCL1 and BCL-XL sensitizing PTCL cells to BH3 mimetic drugs. Accordingly, the combination of THZ1 and the BH3 mimetic obatoclax improves lymphoma growth control in a primary PTCL ex vivo culture and in two STAT3-mutant PTCL xenografts, delineating a potential targeted agent-based therapeutic option for these patients.

2016-12-15 | GSE79955 | GEO

Peripheral T-cell lymphoma: Molecular profiling recognizes subclasses and identifies prognostic markers

Project description:Peripheral T-cell lymphoma (PTCL) is a clinically aggressive disease, with a poor response to therapy and a low overall survival rate of around 30% after 5 years. We have analyzed a series of 105 cases with a diagnosis of PTCL using a customized NanoString platform that includes 208 genes associated with T-cell differentiation, oncogenes and tumor suppressor genes, deregulated pathways and stromal cell subpopulations. A comparative analysis of the various histological types of PTCL (angioimmunoblastic T-cell lymphoma, AITL; PTCL-with T follicular helper phenotype, PTCL-TFH; PTCL-not otherwise signified, PTCL-NOS) showed that specific sets of genes were associated with each of the diagnoses. These included TFH markers, cytotoxic markers and genes whose expression was a surrogate for specific cellular subpopulations, including follicular dendritic cells, mast cells and genes belonging to precise survival (NF-κB) and other pathways. Furthermore, the mutational profile was analyzed using a custom panel that targeted 62 genes in 76 cases distributed in AITL, PTCL-TFH and PTCL-NOS. The main differences between the three nodal PTCL classes involved the RHOAG17V mutations (p<0.0001), which were approximately twice as frequent in AITL (34.09%) as in PTCL-TFH (16.66%) cases, but were not detected in PTCL-NOS. A multivariate analysis identified gene sets that allowed the series of cases to be stratified into different risk groups. This study supports and validates the current division of PTCL into these three categories, identifies sets of markers that can be used for a more precise diagnosis, and recognizes the expression of B-cell genes as an IPI-independent prognostic factor for AITL.

2021-08-26 | GSE182769 | GEO

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