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Articles by H Izumi
Total Records ( 2 ) for H Izumi
  F Hosoi , H Izumi , A Kawahara , Y Murakami , H Kinoshita , M Kage , K Nishio , K Kohno , M Kuwano and M. Ono
 

N-myc downstream regulated gene 1 (NDRG1)/Cap43 expression is a predictive marker of good prognosis in patients with pancreatic cancer as we reported previously. In this study, NDRG1/Cap43 decreased the expression of various chemoattractants, including CXC chemokines for inflammatory cells, and the recruitment of macrophages and neutrophils with suppression of both angiogenesis and growth in mouse xenograft models. We further found that NDRG1/Cap43 induced nuclear factor-B (NF-B) signaling attenuation through marked decreases in inhibitor of B kinase (IKK) β expression and IB phosphorylation. Decreased IKKβ expression in cells overexpressing NDRG1/Cap43 resulted in reduction of both nuclear translocation of p65 and p50 and their binding to the NF-B motif. The introduction of an exogenous IKKβ gene restored NDRG1/Cap43-suppressed expression of melanoma growth-stimulating activity /CXCL1, epithelial-derived neutrophil activating protein-78/CXCL5, interleukin-8/CXCL8 and vascular endothelial growth factor-A, accompanied by increased phosphorylation of IB in NDRG1/Cap43-expressing cells. In patients with pancreatic cancer, NDRG1/Cap43 expression levels were also inversely correlated with the number of infiltrating macrophages in the tumor stroma. This study suggests a novel mechanism by which NDRG1/Cap43 modulates tumor angiogenesis/growth and infiltration of macrophages/neutrophils through attenuation of NF-B signaling. [Cancer Res 2009;69(12):4983–91]

  T Suzuki , H Izumi and M. Ohno
 

Passage of transcribed U snRNA precursors through Cajal bodies ensures that they are properly bound to the PHAX adaptor protein required for nuclear exit.

 
 
 
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