Dataset Information


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

ABSTRACT: 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.

ORGANISM(S): Homo sapiens  

SUBMITTER: Kazumi Nakano   K Uchimaru  K Nakano  A Sato  A Utsunomiya  K Yamaguchi  T Watanabe 

PROVIDER: E-GEOD-33615 | ArrayExpress | 2012-02-23



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Constitutive NF-κB activation has causative roles in adult T cell leukemia (ATL) caused by HTLV-1 and other cancers. Here, we report a pathway involving Polycomb-mediated miRNA silencing and NF-κB activation. We determine the miRNA signatures and reveal miR-31 loss in primary ATL cells. MiR-31 negatively regulates the noncanonical NF-κB pathway by targeting NF-κB inducing kinase (NIK). Loss of miR-31 therefore triggers oncogenic signaling. In ATL cells, miR-31 level is epigenetically regulated,  ...[more]

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