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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Whole genome transcriptional analysis of leukemic CLL cells purified from bone marrow of xeno-transplanted mice

ABSTRACT: The development and progression of CLL are dependent upon a complex microenvironmental network of cellular and molecular signals. As an example the in vitro survival of CLL cells is supported by nurse-like cells, which have been identified as a CLL-specific tumor-associated macrophage (TAM) population. However little is known regarding the role of TAMs in CLL development and progression. In the CLL xenograft model based on the engraftment of MEC1 human CLL cell line into Rag2-/-Î³c-/-, we analyzed the whole-genome transcriptome of leukemic B cells, exposed in vivo to TAMs, isolated from the bone marrow. We found an enrichment of genes involved in inflammation and interaction between TAMs and leukemic cells. Rag2-/-Î³c-/- were injected intravenously with MEC1 cells and sacrificed at early stage of leukemia (n=3). RNA was isolated from: i) in vitro pre-injected human CD19+ MEC1 cells and ii) human CD19+ MEC1 cells purified from murine bone marrow by magnetic separation and processed for illumina whole-genome gene expression direct-hybridization assay

ORGANISM(S): Homo sapiens

SUBMITTER: Michela Riba

PROVIDER: E-GEOD-57787 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Whole genome transcriptional analysis of monocytes/macrophages purified from bone marrow of xeno-transplanted mice

Project description:The development and progression of CLL are dependent upon a complex microenvironmental network of cellular and molecular signals. As an example the in vitro survival of CLL cells is supported by nurse-like cells, which have been identified as a CLL-specific tumor-associated macrophage (TAM) population. However little is known regarding the role of TAMs in CLL development and progression. In the CLL xenograft model based on the engraftment of MEC1 human CLL cell line into Rag2-/-Î³c-/-, we analyzed the whole-genome transcriptome of TAMs isolated from the bone marrow. We found an enrichment of genes involved in inflammation and interaction between TAMs and leukemic cells. Rag2-/-Î³c-/- were injected intravenously with MEC1 cells and sacrificed at early stage of leukemia with age-matched wt Rag2-/-Î³c-/- mice (n=3/group). RNA was isolated from bone marrow murine monocytes/macrophages purified by magnetic separation and processed for illumina whole-genome gene expression direct-hybridization assay.

2016-02-16 | E-GEOD-57785 | biostudies-arrayexpress

Whole genome transcriptional analysis of leukemic CLL cells purified from bone marrow of xeno-transplanted mice

Project description:The development and progression of CLL are dependent upon a complex microenvironmental network of cellular and molecular signals. As an example the in vitro survival of CLL cells is supported by nurse-like cells, which have been identified as a CLL-specific tumor-associated macrophage (TAM) population. However little is known regarding the role of TAMs in CLL development and progression. In the CLL xenograft model based on the engraftment of MEC1 human CLL cell line into Rag2-/-γc-/-, we analyzed the whole-genome transcriptome of leukemic B cells, exposed in vivo to TAMs, isolated from the bone marrow. We found an enrichment of genes involved in inflammation and interaction between TAMs and leukemic cells.

2016-02-16 | GSE57787 | GEO

Whole genome transcriptional analysis of monocytes/macrophages purified from bone marrow of xeno-transplanted mice

2016-02-16 | GSE57785 | GEO

The HDAC inhibitor panobinostat (LBH589) inhibits Acute Lymphoblastic leukemia (ALL) in vitro and in vivo in a new characterized human ALL mice model (Illumina)

Project description:Histone deacetylases (HDACs) have been identified as therapeutic targets due to regulatory function in DNA structure and organization. We have analyzed the role of the LBH589, a novel pan inhibitor of class I and II HDACs, in Acute Lymphoblastic Leukemia. In vitro, LBH589 was shown to induce a dose dependent antiproliferative and apoptotic effect which was associated with an increase in the acetylation of H3 and H4 histone acetylation which was uniformly in every genetic subgroup of ALL. In vivo administration of LBH589 in BALB/c-RAG2-/-Î³c-/- mice in which T and B-cell leukemic cell lines were injected induced a significant reduction in tumor growth (TOM-1, p<0.01 and MOLT-4 p<0.05). Leukemic cells from patients were employed to establish a xenograft model of human leukemia in BALB/c-RAG2-/-Î³c-/- mice and further transplanted in consecutive generations of mice. Treatment of these xenografts with LBH589 induced an increase in the acetylation of H3 and H4 and prolonged the survival of mice in comparison with the animals treated with Vincristine and Dexametasone (p<0.05) and this effect was significantly higher when LBH589 was combined with Vincristine and Dexametasone (p<0.001). Our results that the use of LBH589 in combination with standard chemotherapy represents an attractive option for treatment of patients with ALL. Two primary samples of ALL (one ALL-B and one ALL-T) and two samples of each leukemia after passages in immunodeficient mice.

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Transcription profiling of human ZAP-70+CD38+ and ZAP-70-CD38- B-cells from chronic lymphocytic leukemia patients

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2009-04-23 | E-GEOD-4392 | biostudies-arrayexpress

Gene expression analysis in lymphocyte subsets from mice injected with control- or leukemia-derived extracellular vesicles

Project description:mRNA profiles of Treg, CD4+, CD8+, CD19+ splenic cells from 8-week-old Foxp3 YFP/cre mice injected with control (WT) or leukemic (TCL1) extracellular vesicles (EV) were analyzed in triplicate.

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Gene expression profiling of tumor cells and M2 macrophages from WT mice and mice with deletion of integrin beta3 in macrophage lineage cells (b3KOM)

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