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Gene expression changes induced by BAY1436032 (IDH1mut inhibitor) in sorted human (CD45+) cells from bone marrow of IDH1mut patient derived xenotransplantation mice model

ABSTRACT: Mutations in the enzymes IDH1 and IDH2 have been identified in a wide variety of tumors like glioma, chondrosarcoma, thyroid cancer, lymphoma, melanoma, and in acute myeloid leukemia. Mutated IDH1/2 produces the metabolite 2-hydroxyglutarate (2HG), which interferes with epigenetic regulation of gene expression, and thus may promote tumorigenesis.

ORGANISM(S): Homo sapiens

PROVIDER: GSE83485 | GEO | 2017/05/22

SECONDARY ACCESSION(S): PRJNA326116

REPOSITORIES: GEO

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Gene expression changes induced by hypomethylating agent, Azacitidine (AZA) ; IDH1 inhibitor, BAY1436032 (BAY) and combination of BAY and AZA in sorted human (CD45+) cells from bone marrow of IDH1mut Patient derived Xenotransplantation mice model.

Project description:Mutations in the enzymes IDH1 and IDH2 have been identified in a wide variety of tumors like glioma, chondrosarcoma, thyroid cancer, lymphoma, melanoma, and in acute myeloid leukemia. Mutated IDH1/2 produces the metabolite 2-hydroxyglutarate (2HG), which interferes with epigenetic regulation of gene expression, and thus may promote tumorigenesis. Data for IDH1 inhibitors show that 30-40% of AML patients respond to monotherapy with a median duration of response of 8 months, suggesting that IDH1 inhibitors should be combined with other agents to improve efficacy. BAY 1436032 (BAY) is an oral pan-mutant IDH1 inhibitor currently undergoing phase 1 clinical trials. 5-Azacitidine (AZA) is a hypomethylating agent and can activate key epigenetically silenced pathways in AML cells, leading to an arrest of AML cell proliferation.

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DNA methylation changes induced by hypomethylating agent, Azacitidine (AZA); IDH1 inhibitor, BAY1436032 (BAY) and sequential and simultaneous combination of BAY and AZA in in vitro treated human (CD45+) cells isolated from the bone marrow of IDH1mut

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Gene expression changes induced by overexpression of IDH1mut in the sorted mouse bone marrow cells

Project description:Mutations in the enzymes IDH1 and IDH2 have been identified in a wide variety of tumors like glioma, chondrosarcoma, thyroid cancer, lymphoma, melanoma, and in acute myeloid leukemia. Mutated IDH1/2 produces the metabolite 2-hydroxyglutarate (2HG), which interferes with epigenetic regulation of gene expression, and thus may promote tumorigenesis. HoxA9 immortalized bone marrow cells from C57BJ/6 mice were transduced with either empty vector or pSF91-IDH1wt-IRES-EGFP, or pSF91-IDH1mut-IRES-GFP and transplanted in irradiated recipient mice. Four weeks after transplantation, GFP+ cells were sorted from mouse bone marrow, from which total RNA was extracted and subjected to microarray analysis.

2013-11-05 | E-GEOD-45019 | biostudies-arrayexpress

Gene expression changes induced by overexpression of IDH1mut and treatment with 2HG in the sorted mouse bone marrow cells

Project description:Mutations in the enzymes IDH1 and IDH2 have been identified in a wide variety of tumors like glioma, chondrosarcoma, thyroid cancer, lymphoma, melanoma, and in acute myeloid leukemia. Mutated IDH1/2 produces the metabolite 2-hydroxyglutarate (2HG), which interferes with epigenetic regulation of gene expression, and thus may promote tumorigenesis. HoxA9 immortalised bone marrow cells from C57BJ/6 mice were tranduced with either empty vector or pSF91-IDH1wt-IRES-EGFP, or pSF91-IDH1mut-IRES-GFP and transplanted in irradiated recipient mice. Alternatively, HoxA9 immortalised cells transduced with empty vector transplanted mice were treated with R-2HG at dose of 1mg/day for four weeks. Four weeks after transplantation/treatment GFP+ cells were sorted from mouse bone marrow, from which total RNA ws extracted and subjected to microarray analysis.

2016-06-01 | E-GEOD-77594 | biostudies-arrayexpress

DNA methylation changes induced by overexpression of IDH1mut or treatment with 2HG in the sorted mouse bone marrow cells

Project description:Mutations in the enzymes IDH1 and IDH2 have been identified in a wide variety of tumors like glioma, chondrosarcoma, thyroid cancer, lymphoma, melanoma, and in acute myeloid leukemia. Mutated IDH1/2 produces the metabolite 2-hydroxyglutarate (2HG), which interferes with epigenetic regulation of gene expression, and thus may promote tumorigenesis. HoxA9 immortalised bone marrow cells from C57BJ/6 mice were tranduced with either empty vector or pSF91-IDH1wt-IRES-EGFP, or pSF91-IDH1mut-IRES-GFP and transplanted in irradiated recipient mice. Alternatively, HoxA9 immortalised cells transduced with empty vector transplanted mice were treated with R-2HG at dose of 1mg/day for four weeks. Four weeks after transplantation/treatment GFP+ cells were sorted from mouse bone marrow, from which total DNA was extracted and subjected to Reduced Representation Bisulfite Sequencing (RRBS) to determine the genome-wide methylation signature.

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Sorted tumor RNA-seq of syngeneic murine mutant IDH1 ICC tumor model treated with IDH1 inhibitor against vehicle

Project description:IDH1 is the most commonly mutated metabolic gene across human cancers, with the highest mutational frequency observed in AML, glioma, chondrosarcoma, and intrahepatic cholangiocarcinoma. Mutations of the hot spot R132 codon alter the activity of the IDH1 enzyme, resulting in the NADPH-dependent conversion of alpha-ketoglutarate to (R)-2-hydroxyglutarate [(R)-2HG], which accumulates to mM levels within tumors. (R)-2HG competitively inhibits a range of enzymes that utilize alpha-ketoglutarate. Targets include the JmjC family histone demethylases and TET family DNA demethylases whose inhibition is linked to the altered epigenetic state characteristic of many mIDH tumors. To gain insight into the mechanisms underlying the anti-tumor efficacy of inhibition of mutant IDH1 we conducted RNA-sequencing (RNA-seq) analysis of purified tumor cells. For these studies, the immune-competent 2205 subcutaneous allograft model was treated with AG120 or vehicle for 6 days and non-tumor cells were removed by magnetic bead sorting (negative selection for CD45+ immune cells, CD31+ endothelial cells, TER119+ erythrocytes, and CD90.2+ fibroblasts).

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