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Search for a novel therapeutic target in myeloid leukemia

ABSTRACT: Antibody-based therapy for cancer is now one of the most successful and important strategies for treating patients with hematological malignancies. However, the lack of efficient tumor-associated antigens restricts the targeting therapy of myeloid leukemia. Analysis of the gene expression proﬁles of primary bone marrow samples from human acute myeloid leukemia (AML) patients or healthy donors was to identify and expand novel targets for the treatment of myeloid leukemias. we found that epithelial cell adhesion molecule (EpCAM) is overexpressed in patients with AML.

ORGANISM(S): Homo sapiens

PROVIDER: GSE79605 | GEO | 2016/05/14

SECONDARY ACCESSION(S): PRJNA316426

REPOSITORIES: GEO

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Search for a novel therapeutic target in myeloid leukemia

Project description:Antibody-based therapy for cancer is now one of the most successful and important strategies for treating patients with hematological malignancies. However, the lack of efficient tumor-associated antigens restricts the targeting therapy of myeloid leukemia. Analysis of the gene expression proï¬les of primary bone marrow samples from human acute myeloid leukemia (AML) patients or healthy donors was to identify and expand novel targets for the treatment of myeloid leukemias. we found that epithelial cell adhesion molecule (EpCAM) is overexpressed in patients with AML. we analyzed the gene expression proï¬les of bone marrow mononuclear cells from 2 human acute myeloid leukemia (AML) patients and 2 healthy donors using an oligonucleotide microarray, to identify up-regulated genes in AML samples comparing with healthy tissues.

2016-05-14 | E-GEOD-79605 | biostudies-arrayexpress

Graphdiyne oxide nanosheets display anti-leukemia efficacy specifically against DNMT3A-mutant AML cells [RNA-Seq]

Project description:Acute myeloid leukemia (AML) is a fatal hematological malignancy for most patients, and DNA methyltransferase 3A (DNMT3A) mutations occur in about 30-35% of AML patients. We show graphdiyne oxide (GDYO), a member of two-dimensional carbon nanomaterials3, demonstrates an anti-leukemia effect in vitro and in vivo against AML cells with DNMT3A mutation specifically. Here, we used RNA-seq to depict transcriptome of AML cells with or without GDYO treatment.

2022-08-23 | GSE190871 | GEO

Graphdiyne oxide nanosheets display anti-leukemia efficacy specifically against DNMT3A-mutant AML cells [Bisulfite-Seq]

Project description:Acute myeloid leukemia (AML) is a fatal hematological malignancy for most patients, and DNA methyltransferase 3A (DNMT3A) mutations occur in about 30-35% of AML patients. We show graphdiyne oxide (GDYO), a member of two-dimensional carbon nanomaterials3, demonstrates an anti-leukemia effect in vitro and in vivo against AML cells with DNMT3A mutation specifically. Here, we used reduced representation bisulfite sequencing (RRBS) to depict DNA methylome of AML cells with or without GDYO treatment.

2022-08-23 | GSE190873 | GEO

An Informatic Approach to Chimeric Antigen Receptor Discovery Integrates Proteomics and Transcriptomics to Identify Novel Combinatorial Pairs

Project description:Chimeric antigen receptor (CAR) therapy targeting CD19 yielded remarkable outcomes in patients with acute lymphoblastic leukemia. To identify potential CAR targets in acute myeloid leukemia (AML), we probed the AML surfaceome for over-expressed molecules with potentially tolerable systemic expression. We integrated large transcriptomics and proteomics data sets from malignant and normal tissues, and developed an algorithm to identify potential targets expressed in leukemia stem cells, but not in normal CD34+CD38– hematopoietic cells, T cells or vital tissues. As these investigations did not uncover candidate targets with a profile as favorable as CD19, we developed a generalizable combinatorial targeting strategy fulfilling stringent efficacy and safety criteria. Our findings indicate that several target pairings hold great promise for CAR therapy of AML.

2017-10-24 | PXD007552 | Pride

caArray_golub-00392: Gefitinib (Iressa) induces myeloid differentiation of acute myeloid leukemia

Project description:Cure rates for patients with acute myeloid leukemia (AML) remain low despite ever-increasing dose intensity of cytotoxic therapy. In an effort to identify novel approaches to AML therapy, we recently reported a new method of chemical screening based on the modulation of a gene expression signature of interest. We applied this approach to the discovery of AML-differentiation-promoting compounds. Among the compounds inducing neutrophilic differentiation was DAPH1 (4,5-dianilinophthalimide), previously reported to inhibit epidermal growth factor receptor (EGFR) kinase activity. Here we report that the Food and Drug Administration (FDA)-approved EGFR inhibitor gefitinib similarly promotes the differentiation of AML cell lines and primary patient-derived AML blasts in vitro. Gefitinib induced differentiation based on morphologic assessment, nitro-blue tetrazolium reduction, cell-surface markers, genome-wide patterns of gene expression, and inhibition of proliferation at clinically achievable doses. Importantly, EGFR expression was not detected in AML cells, indicating that gefitinib functions through a previously unrecognized EGFR-independent mechanism. These studies indicate that clinical trials testing the efficacy of gefitinib in patients with AML are warranted. golub-00392 Assay Type: Gene Expression Provider: Affymetrix Array Designs: HG-U133A, HG-U133A_2 Organism: Homo sapiens (ncbitax) Material Types: cell, total_RNA, synthetic_RNA, organism_part, whole_organism*Cell Types: Disease States: Acute Myeloid Leukemia, Normal, Acute Myeloid Leukemia

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Transcriptomic landscape of adult de novo acute myeloid leukemia offers prognostic biomarkers and putative targets

Project description:Acute myeloid leukemia (AML), caused by an interplay of genetic and epigenetic alterations, is a heterogeneous hematological malignancy characterized by accumulation of proliferative clonal abnormally myeloblasts in the bone marrow and blood. Chemotherapy resistance is common, and relapses occur frequently for the majority of AML patients, indicating a strong need for better therapeutic strategies. The molecular complexity of acute myeloid leukemia (AML) presents a considerable challenge to implementation of clinical genetic testing for accurate risk stratification. Identification of better biomarkers and alternative targeted therapeutic strategies therefore remain a high priority to enable improving established stratification and guiding risk-adapted therapy decisions. RNA-sequencing offers the greatest diagnostic return, enabling identification of whole-transcriptome expression, expressed gene fusions, single nucleotide and short insertion/deletion variants, and alternative splicing information. Therefore, a total of 157 patient bone marrow samples were collected as diagnosis and subjected to RNA-seq.

2022-11-23 | GSE201492 | GEO

Proteomic and Phosphoproteomic Landscapes of Acute Myeloid Leukemia

Project description:Label-free quantitation dataset from 44 representative Acute Myeloid Leukemia (AML) patients from the LAML TCGA dataset, and 6 healthy bone marrow derived controls including 3 lineage-depleted and 3 CD34+ selected bone marrows.

2022-03-09 | MSV000089029 | MassIVE

CKS1-dependent proteostatic regulation has dual roles in combating acute myeloid leukemia whilst protecting normal hematopoiesis

Project description:Acute myeloid leukemia (AML) is an aggressive hematological disorder comprised of a hierarchy of quiescent leukemic stem cells and fast proliferating blasts with limited self-renewal ability. Significant plasticity in the AML epigenome and metabolome results in a high rate of drug resistance and relapse, with extremely low 2-year survival rates in the poorest cytogenetic risk patients. The current backbone of clinical induction chemotherapy reduces total disease burden, but does not deplete leukemic stem cells which reconstitute the disease in vivo, and also suffers from severe toxicity of healthy hematopoietic cells. Whilst much work has been done to identify epigenetic vulnerabilities in AML, little is known about protein dynamics, and here we explored the therapeutic inhibition of highly specific CKS1-dependent protein degradation. We report a dual role for CKS1-depdent protein degradation in specifically targeting AML, whilst protecting normal hematopoietic cells from chemotherapeutic toxicity.

2022-07-20 | PXD022754 | Pride

Bortezomib suppresses self-renewal and leukemogenesis of leukemia stem cell by NF-ĸB-dependent inhibition of cyclin dependent kinase 6 in MLL-rearranged myeloid leukemia

Project description:Acute myeloid leukemia (AML) with chromosomal rearrangements involving the H3K4 methyltransferase mixed-lineage leukemia (MLL) is an aggressive subtype with low overall survival. MLL rearrangements rapidly transform hematological stem and progenitor cell (HSPC) to leukemia stem cell (LSC). Bortezomib (Velcade) is used widely in hematological malignancies. However, it is still unknown whether bortezomib possesses anti-self-renewal and anti-leukemogenesis of LSC in AML with MLL rearrangements. Here, we found that bortezomib inhibited cell proliferation, induced apoptosis, and decreased colony formation in leukemic cell lines, primary AML blasts, and MLL-AF9-transformed murine leukemic blasts. Besides, bortezomib reduced the frequency and function of LSC, inhibited the progression, and prolonged

2022-08-10 | GSE157702 | GEO

Proteomic and Phosphoproteomic Landscapes of Acute Myeloid Leukemia

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