Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA345426 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR4344120_1.fastq.gz | Fastqsanger.gz | |||
| SRR4344120_2.fastq.gz | Fastqsanger.gz | |||
| SRR4344130_1.fastq.gz | Fastqsanger.gz | |||
| SRR4344130_2.fastq.gz | Fastqsanger.gz | |||
| SRR4344121_1.fastq.gz | Fastqsanger.gz |
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Project description:Vitamin C induced epigenomic remodeling in IDH1 mutant acute myeloid leukemia
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Project description:Neomorphic mutations in isocitrate dehydrogenase 1 (IDH1) are driver mutations in acute myeloid leukemia (AML) and other cancers. We report the development of new allosteric inhibitors of mutant IDH1. Crystallographic and biochemical results demonstrated that compounds of this chemical series bind to an allosteric site and lock the enzyme in a catalytically inactive conformation, thereby enabling inhibition of different clinically relevant IDH1 mutants. Treatment of IDH1 mutant primary AML cells uniformly led to a decrease in intracellular 2-HG, abrogation of the myeloid differentiation block and induction of granulocytic differentiation at the level of leukemic blasts and more immature stem-like cells, in vitro and in vivo. Molecularly, treatment with the inhibitors led to a reversal of the DNA cytosine hypermethylation patterns caused by mutant IDH1 in AML patients’ cells. Our study provides proof-of-concept for the molecular and biological activity of novel allosteric inhibitors for targeting different mutant forms of IDH1 in leukemia. To obtain insight into the molecular mechanism for the induction of granulocytic differentiation and cell death following inhibition of IDH1 mutant protein in primary AML cells, we performed gene expression microarrays following treatment with either GSK321 IDH1 inhibitor or Controls (DMSO or GSK990 inactive inhibitor). Primary IDH1 mutant acute myeloid leukemia (AML) mononuclear (MNC) cells were treated in suspension cultures in differentiating media for 6 days with 3 microM GSK990 or GSK321 and an equal volume of DMSO. Followed by microarray analysis after RNA extraction.
2015-09-21 | E-GEOD-72152 | biostudies-arrayexpress
Project description:Neomorphic mutations in isocitrate dehydrogenase 1 (IDH1) are driver mutations in acute myeloid leukemia (AML) and other cancers. We report the development of new allosteric inhibitors of mutant IDH1. Crystallographic and biochemical results demonstrated that compounds of this chemical series bind to an allosteric site and lock the enzyme in a catalytically inactive conformation, thereby enabling inhibition of different clinically relevant IDH1 mutants. Treatment of IDH1 mutant primary AML cells uniformly led to a decrease in intracellular 2-HG, abrogation of the myeloid differentiation block and induction of granulocytic differentiation at the level of leukemic blasts and more immature stem-like cells, in vitro and in vivo. Molecularly, treatment with the inhibitors led to a reversal of the DNA cytosine hypermethylation patterns caused by mutant IDH1 in AML patients’ cells. Our study provides proof-of-concept for the molecular and biological activity of novel allosteric inhibitors for targeting different mutant forms of IDH1 in leukemia. To obtain insight into the molecular mechanism of the novel IDH1 mutant allosteric inhibitor, primary AML cells were treated with either GSK321 IDH1 active inhibitor or Controls (DMSO or GSK990 inactive inhibitor) followed by DNA extraction for ERRBS analysis. Primary IDH1 mutant acute myeloid leukemia (AML) mononuclear (MNC) cells were treated in suspension cultures in differentiating media for 6 days with 3 microM GSK990 or GSK321 and an equal volume of DMSO, Followed ERRBS analysis after DNA extraction.
2015-09-21 | E-GEOD-72247 | biostudies-arrayexpress
Project description:Microarrays were used to examine gene expression changes between bone marrow isolated haematopoeietic cell populations (LSK cells: Lin-Sca1+cKit+) populations of control and mutant (LysM-KI) mice. The LysM-KI mouse is a murine model which expresses an Idh1 (isocitrate dehydrogenase 1) mutation (Idh1-R132H) in cells of the myeloid lineage. Mutations in IDH1 (and IDH2) in humans are commonly found in cytogenetically normal acute myeloid leukemia as well as glioblastomas. The current study was initiated to understand how these mutations may affect leukemogenesis and myeloid cell development. Total RNA obtained from bone marrow sorted LSK cells of mutant LysM-KI and control individual mice.
2012-07-21 | E-GEOD-38589 | biostudies-arrayexpress
Project description:Neomorphic mutations in isocitrate dehydrogenase 1 (IDH1) are driver mutations in acute myeloid leukemia (AML) and other cancers. We report the development of new allosteric inhibitors of mutant IDH1. Crystallographic and biochemical results demonstrated that compounds of this chemical series bind to an allosteric site and lock the enzyme in a catalytically inactive conformation, thereby enabling inhibition of different clinically relevant IDH1 mutants. Treatment of IDH1 mutant primary AML cells uniformly led to a decrease in intracellular 2-HG, abrogation of the myeloid differentiation block and induction of granulocytic differentiation at the level of leukemic blasts and more immature stem-like cells, in vitro and in vivo. Molecularly, treatment with the inhibitors led to a reversal of the DNA cytosine hypermethylation patterns caused by mutant IDH1 in AML patients’ cells. Our study provides proof-of-concept for the molecular and biological activity of novel allosteric inhibitors for targeting different mutant forms of IDH1 in leukemia. To obtain insight into the molecular mechanism of the novel IDH1 mutant allosteric inhibitor, primary AML cells were treated with either GSK321 IDH1 active inhibitor or Controls (DMSO or GSK990 inactive inhibitor) followed by DNA extraction for ERRBS analysis.
2015-09-21 | GSE72247 | GEO
Project description:Microarrays were used to examine gene expression changes between bone marrow isolated haematopoeietic cell populations (LSK cells: Lin-Sca1+cKit+) populations of control and mutant (LysM-KI) mice. The LysM-KI mouse is a murine model which expresses an Idh1 (isocitrate dehydrogenase 1) mutation (Idh1-R132H) in cells of the myeloid lineage. Mutations in IDH1 (and IDH2) in humans are commonly found in cytogenetically normal acute myeloid leukemia as well as glioblastomas. The current study was initiated to understand how these mutations may affect leukemogenesis and myeloid cell development.
2012-07-22 | GSE38589 | GEO
Project description:The genomes of myeloid malignancies are characterized by epigenomic abnormalities. Heterozygous, inactivating TET2 mutations and neomorphic IDH mutations are recurrent and mutually exclusive in acute myeloid leukemia (AML) genomes. Ascorbic Acid (vitamin C) has been shown to stimulate the catalytic activity of TET2 in vitro and thus we sought to explore its effect in a leukemic model expressing IDH1R132H. Vitamin C treatment induced an IDH1R132H dependent reduction in cell proliferation and an increase in expression of genes involved in leukocyte differentiation. Vitamin C induced differentially methylated regions (DMRs) that displayed a significant overlap with enhancers implicated in myeloid differentiation and were enriched in sequence elements for the hematopoietic transcription factors RUNX1 and PU.1. ChIP-seq of PU.1 and RUNX1 revealed a significant loss of PU.1 and increase of RUNX1 bound DNA elements accompanied by their demethylation following vitamin C treatment. Additionally, vitamin C induced an increase in H3K27ac flanking sites bound by RUNX1. Based on these data we propose a model of vitamin C induced epigenetic remodelling of transcription factor binding sites driving differentiation in a leukemic model.
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Project description:Novel IDH1 Mutant Inhibitors for Treatment of Acute Myeloid Leukemia (expression)
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Project description:Novel IDH1 Mutant Inhibitors for Treatment of Acute Myeloid Leukemia (ERRBS)
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