Expression changes with JAK2V617F and TNF receptor block in a murine model of MPN
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE104792 | GEO | 2018/07/31
REPOSITORIES: GEO
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Project description:Expression changes with JAK2V617F and TNF receptor block in a murine model of MPN
| PRJNA413912 | ENA
Project description:In order to explore the gene expression signature in essential thrombocythemia (ET) patients in relation to JAK2V617F mutational status, expression profiling in circulating granulocytes was performed. Twenty ET were studied by microarray analysis and the results were confirmed by real-time quantitative RT-PCR in 40 ET patients, not receiving cytoreductive treatment. A heterogeneous molecular signature characterized by two main gene expression patterns was found: one with an up-regulation of inflammatory genes related to neutrophil activation and thrombosis, and the other one with significantly lower expression of these genes. Supervised clustering analysis showed 30 genes differentially expressed between JAK2V617F-negative and JAK2V617F-positive ET patients. Among the JAK2V617F-negative, a set of 14 genes (CISH, C13orf18, CCL3, PIM1, MAFF, SOCS3, ID2, GADD45B, KLF5, TNF, LAMB3, HRH4, TAGAP and TRIB1) showed an abnormal expression pattern. In this group of patients CISH, SOCS2, SOCS3 and PIM1 genes, all involved in JAK-STAT signaling pathway, presented a lower expression,. A two-gene predictor model was built comprising FOSB and CISH genes, which were the best discriminators of JAK2V617F status. In conclusion, JAK2V617F-negative ET patients present a characteristic gene expression profile, different from JAK2V617F-positive patients. Other pathways besides JAK-STAT might be implicated in the pathophysiology of JAK2V617F-negative ET patients. Keywords: Disease state analysis
2008-05-19 | GSE11003 | GEO
Project description:In order to explore the gene expression signature in essential thrombocythemia (ET) patients in relation to JAK2V617F mutational status, expression profiling in circulating granulocytes was performed. Twenty ET were studied by microarray analysis and the results were confirmed by real-time quantitative RT-PCR in 40 ET patients, not receiving cytoreductive treatment. A heterogeneous molecular signature characterized by two main gene expression patterns was found: one with an up-regulation of inflammatory genes related to neutrophil activation and thrombosis, and the other one with significantly lower expression of these genes. Supervised clustering analysis showed 30 genes differentially expressed between JAK2V617F-negative and JAK2V617F-positive ET patients. Among the JAK2V617F-negative, a set of 14 genes (CISH, C13orf18, CCL3, PIM1, MAFF, SOCS3, ID2, GADD45B, KLF5, TNF, LAMB3, HRH4, TAGAP and TRIB1) showed an abnormal expression pattern. In this group of patients CISH, SOCS2, SOCS3 and PIM1 genes, all involved in JAK-STAT signaling pathway, presented a lower expression,. A two-gene predictor model was built comprising FOSB and CISH genes, which were the best discriminators of JAK2V617F status. In conclusion, JAK2V617F-negative ET patients present a characteristic gene expression profile, different from JAK2V617F-positive patients. Other pathways besides JAK-STAT might be implicated in the pathophysiology of JAK2V617F-negative ET patients. Experiment Overall Design: Twenty ET were studied by microarray analysis and the results were confirmed by real-time quantitative RT-PCR in 40 ET patients. Microarray expression profiles were obtained using Whole Human Genome oligonucleotide microarrays (G4112A, Agilent Technologies, Palo Alto, CA). In each microarray experiment, RNA obtained from granulocytes from a single ET patient was compared with a pool of granulocyte RNAs from 10 healthy individuals. Duplicate hybridizations were performed for each comparison with dye-swapping to control.
2008-06-20 | E-GEOD-11003 | biostudies-arrayexpress
Project description:Philadelphia chromosome-negative myeloproliferative neoplasms (MPN) consist of primary myelofibrosis (PMF), polycythemia vera (PV), essential thrombocythemia (ET) In this dataset, we compare the gene expression data of patients JAK2V617F vs. CALR-mutated MPN patients.
2018-10-29 | GSE120362 | GEO
Project description:Philadelphia chromosome-negative myeloproliferative neoplasms (MPN) consist of primary myelofibrosis (PMF), polycythemia vera (PV), essential thrombocythemia (ET) and seconday myelofibrosis (pPV-MF or pET-MF) In this dataset, we compare the gene expression data of bone marrow (BM) or peripheral blood (PB) mononuclear cells of CD34+ cells from JAK2V617F mutated patients vs. healthy donors
2022-08-26 | GSE136335 | GEO
Project description:The JAK2V617F mutation has been reported in about 40-60% of Essential Thrombocythemia (ET) patients. However, little is known about specific molecular abnormalities of the hematopoietic stem cell compartment of ET according to JAK2 mutation. Therefore, we compared the gene expression profiles of bone marrow (BM) CD34+ cells from 16 patients with and without the JAK2V617F mutation to identify differentially expressed genes. Keywords: cell type comparison Sample name and JAK2V617F mutation: - BM CD34+ cells from healthy subject (CTR) - ET JAK2V617F-positive: ET 1, ET 4, ET 6, ET 7, ET 8, ET 10, ET 12, ET 15 - ET JAK2V617F-negative: ET 2, ET 3, ET 5, ET 9, ET 11, ET 13, ET 14, ET 16
2010-04-06 | E-GEOD-9827 | biostudies-arrayexpress
Project description:To interrogate the molecular pathways disrupted by Jak2V617F expression and/or Tet2 loss, Lin-negative, Sca-1-positive, c-kit-positive (LSK) hematopoietic progenitor cells were isolated from bone marrow of wild-type, Jak2V617F, Tet2-null or Jak2V617F/Tet2-null animals (n= 2-4 mice per group) and subjected to gene expression profiling.
2014-10-31 | E-MTAB-2986 | biostudies-arrayexpress
Project description:Interferon alpha (IFNa) is an effective treatment for patients with myeloproliferative neoplasms (MPN). In addition to inducing hematological responses in most MPN patients, IFNa reduces the JAK2V617F allelic burden and can render the JAK2V617F mutant clone undetectable in some patients. The precise mechanism underlying these responses is incompletely understood and whether the molecular responses that are seen occur due to the effects of IFNa on JAK2V617F mutant stem cells is debated. Using a murine model of Jak2V617F MPN, we investigated the effects of IFNa on Jak2V617F MPN-propagating stem cells in vivo. We report that IFNa treatment induces hematological responses in the model and causes depletion of Jak2V617F MPN-propagating cells over time, impairing disease transplantation. We demonstrate that IFNa treatment induces cell-cycle activation of Jak2V617F mutant long-term hematopoietic stem cells (LT-HSC) and promotes a predetermined erythroid-lineage differentiation program. These findings provide insights into the differential effects of IFNa on Jak2V617F mutant and normal hematopoiesis and suggest that IFNa achieves molecular remissions in MPN patients through its effects on MPN stem cells. Furthermore, these results support combinatorial therapeutic approaches in MPN, by concurrently depleting dormant JAK2V617F MPN-propagating stem cells with IFNa and targeting the proliferating downstream progeny with JAK2-inhibitors or cytotoxic chemotherapy.
2013-03-09 | GSE44961 | GEO
Project description:V617F driver mutation of JAK2 is the leading cause of the Philadelphia-chromosome-negative myeloproliferative neoplasms (MPNs). Loss of Plek2 ameliorated JAK2V617F-induced myeloproliferative phenotypes including erythrocytosis, neutrophilia, thrombocytosis, and splenomegaly, thereby reverting the widespread vascular occlusions and lethality of JAK2V617F knockin mice. To reveal the role of Plek2 in the pathogenesis of JAK2V617F-induced MPNs and the detail mechanisms of its rescue, we performed RNA sequencing to analyze the gene expression profiles change between JAK2V617F/+ Plek2+/+ and JAK2V617F/+ Plek2-/- erythroblasts and hematopoietic stem/progenitor cells.
2019-04-11 | GSE97658 | GEO
Project description:Interferon alpha (IFNa) is an effective treatment for patients with myeloproliferative neoplasms (MPN). In addition to inducing hematological responses in most MPN patients, IFNa reduces the JAK2V617F allelic burden and can render the JAK2V617F mutant clone undetectable in some patients. The precise mechanism underlying these responses is incompletely understood and whether the molecular responses that are seen occur due to the effects of IFNa on JAK2V617F mutant stem cells is debated. Using a murine model of Jak2V617F MPN, we investigated the effects of IFNa on Jak2V617F MPN-propagating stem cells in vivo. We report that IFNa treatment induces hematological responses in the model and causes depletion of Jak2V617F MPN-propagating cells over time, impairing disease transplantation. We demonstrate that IFNa treatment induces cell-cycle activation of Jak2V617F mutant long-term hematopoietic stem cells (LT-HSC) and promotes a predetermined erythroid-lineage differentiation program. These findings provide insights into the differential effects of IFNa on Jak2V617F mutant and normal hematopoiesis and suggest that IFNa achieves molecular remissions in MPN patients through its effects on MPN stem cells. Furthermore, these results support combinatorial therapeutic approaches in MPN, by concurrently depleting dormant JAK2V617F MPN-propagating stem cells with IFNa and targeting the proliferating downstream progeny with JAK2-inhibitors or cytotoxic chemotherapy. HSC-enriched population from WT (CD45.1) or Jak2VF knockin (CD45.2), after 4 weeks of interferon alpha or vehicle treatment. N=4 per condition
2013-03-09 | E-GEOD-44961 | biostudies-arrayexpress