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Whole genome gene expression profiling in CD4+ T-cells, FACS-sorted based on CADM1/CD7 expression levels, in Adult T-cell Leukemia-lymphoma (ATL) patients, HTLV-1 carriers, and in healthy volunteers.

ABSTRACT: CADM1 overexpresion and stepwise downregulation of CD7 in CD4+T-cells from ATL patients and HTLV-1 carriers accurately reflect the process of disease, i.e., oligoclonally and clonally exanding cells are accumulated in D (CADM1posCD7dim) and N (CADM1posCD7neg) populations, respectively. Moreover, gene expression profiling of each subpopulation supported that notion.

ORGANISM(S): Homo sapiens

PROVIDER: GSE55851 | GEO | 2014/06/02

SECONDARY ACCESSION(S): PRJNA241151

REPOSITORIES: GEO

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Whole genome gene expression profiling in CD4+ T-cells, FACS-sorted based on CADM1/CD7 expression levels, in Adult T-cell Leukemia-lymphoma (ATL) patients, HTLV-1 carriers, and in healthy volunteers.

Project description:CADM1 overexpresion and stepwise downregulation of CD7 in CD4+T-cells from ATL patients and HTLV-1 carriers accurately reflect the process of disease, i.e., oligoclonally and clonally exanding cells are accumulated in D (CADM1posCD7dim) and N (CADM1posCD7neg) populations, respectively. Moreover, gene expression profiling of each subpopulation supported that notion. PBMCs of asymptomatic carriers (ACs) and ATLs were subgrouped based on CADM1 and CD7 expression levels by multicolor flow cytometry. FACS-sorted subpopulations were then subjected to extraction of total RNA, followed by Cy-3 labeling and human whole genome gene expression microarray analyses.

2014-06-02 | E-GEOD-55851 | biostudies-arrayexpress

Gene expression profile in HLA-A02:01-restricted cytotoxic T-cells specific to HTLV-1 in ATL patients

Project description:We compared gene expression of CTLs specific to HTLV-1 between the eaarly death group with aggressive disease status and long-term survivors with stable disease status. We then performed gene expression profiling analysis using data obtained from RNA-seq of seven patients with acute ATL in 4, chronic ATL in 2, and an asymptomatic HTLV-1 carrier.

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Gene expression profiling in patients infected with HTLV-1: Identification of ATL and HAM/TSP-specific genetic profiles

Project description:We examined the gene expression profiles of CD4+ T-cells isolated from 7 ATL, 12 HAM/TSP and 11 AC (asymptomatic carriers) to identify gene signatures that may be characteristic for these particular diseases. Using gene expression arrays, we identified ~ 1039 immune-related genes that were differentially expressed in CD4+ T cells; using stringent exclusion criteria, a 122 gene signature could be divided into 3 groups: I) ATL-specific; II) common; and III) HAM/TSP-specific markers To better understand the genetic differences between HTLV-1-associated diseases, we examined the gene expression profile of T lymphocytes from patients either suffering from ATL, HAM/TSP or carrying the HTLV-1 virus without any symptoms. Microarray experiments were performed using the human ImmuneArray cDNA array (UHN Microarray Center, University of Toronto). We used the Stratagene Universal Control, labelled Cy5 for all samples in a competitive hybridization.

2010-02-13 | E-GEOD-19080 | biostudies-arrayexpress

miRNA expression profiling in Adult T-cell Leukemia (ATL) cells and in Normal CD4+ T-cells

Project description:HTLV-1 infected individuals stay as carriers for their lifetimes, while the rest of 5% are killed by ATL. ATL leukemogenesis is a complex process involving accumulation of multiple genetic abnormalities in HTLV-1 infected cells. To clarify genetic events underlying ATL leukemogenesis, we conducted comprehensive miRNA expression profiling in 40 ATL patients and in 22 healthy volunteers. Total RNA samples from PBMC of ATL patients (mostly HTLV-1 inefcted CD4+ T-cells) and from CD4+ T-cells from healthy donors were subjected to Cy-3 labeling followed by miRNA expression microarray analyses.

2012-02-23 | E-GEOD-31629 | biostudies-arrayexpress

miRNA expression profiling in Adult T-cell Leukemia (ATL) cells and in Normal CD4+ T-cells

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Expression data from CD4-positive HTLV-positive cell lines and from CD4-positive HTLV-negative primary cells.

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Whole genome gene expression profiling in Adult T-cell Leukemia (ATL) cells and in Normal CD4+ T-cells

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Whole genome gene expression profiling in Adult T-cell Leukemia (ATL) cells and in Normal CD4+ T-cells

Project description:HTLV-1 infected individuals stay as carriers for their lifetimes, while the rest of 5% are killed by ATL. ATL leukemogenesis is a complex process involving accumulation of multiple genetic abnormalities in HTLV-1 infected cells. To clarify genetic events underlying ATL leukemogenesis, we conducted comprehensive gene expression profiling in 52 ATL patients and in 21 healthy volunteers. Total RNA samples from PBMC of ATL patients (mostly HTLV-1 inefcted CD4+ T-cells) and from CD4+ T-cells from healthy donors were subjected to Cy-3 labeling followed by human whole genome gene expression microarray analyses.

2012-02-23 | E-GEOD-33615 | biostudies-arrayexpress

Expression data from CD4-positive HTLV-positive cell lines and from CD4-positive HTLV-negative primary cells.

Project description:We used microarrays to compare the global programme of gene expression in HTLV-positive, ATL-derived and HTLV-positive in vitro-transformed cell lines with that of uninfected primary CD4 T cells. Cells were harvested one day after splitting, in case of primary T cells, cells were harvested after reaching a postmitotic state.

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Molecular targets of proteasome inhibitor, bortezomib, on ATL cells

Project description:Adult T-cell leukemia (ATL) is a fatal neoplasia derived from HTLV-1 infected T lymphocytes exhibiting constitutive activation of NF-kB. To elucidate the complex molecular mechanism of anti-tumor effect of the proteasome inhibitor, bortezomib in ATL cells, we attempted to perform gene expression profiling. Keywords: dose response

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