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Translocation of the inhibitor of apoptosis protein c-IAP1 from the nucleus to the Golgi in hematopoietic cells undergoing differentiation: a nuclear export signal-mediated event

The caspase inhibitor and RING finger-containing protein cellular inhibitor of apoptosis protein 1 (c-IAP1) has been shown to be involved in both apoptosis inhibition and signaling by members of the tumor necrosis factor (TNF) receptor family. The...
Authors: Plenchette S, Cathelin S, Rebe C, Launay S, Ladoire S, Sordet O, Ponnelle T, Debili N, Phan TH,...

Amyloid precursor protein mediates proinflammatory activation of monocytic lineage cells

Alzheimer's disease is a progressive neurodegenerative disorder characterized by extracellular deposition of beta-amyloid (Abeta) peptide containing neuritic plaques. Abeta peptides are proteolytically derived from the membrane-bound amyloid...
Authors: Sondag CM and Combs CK

Chemokine receptor CCR7 induces intracellular signaling that inhibits apoptosis of mature dendritic cells

Acquisition of CCR7 expression is an important phenotype change during dendritic cell (DC) maturation that endows these cells with the capability to migrate to lymph nodes. We have analyzed the possible role of CCR7 on the regulation of the survival...
Authors: Sanchez-Sanchez N, Riol-Blanco L, de la Rosa G, Puig-Kroger A, Garcia-Bordas J, Martin D, Longo N,...

FAS (CD95) mutations are rare in gastric MALT lymphoma but occur more frequently in primary gastric diffuse large B-cell lymphoma

A loss of FAS (CD95) function has been proposed to constitute an important step in early mucosa-associated lymphoid tissue (MALT) lymphoma development and FAS mutations have been recognized in malignant lymphomas, in particular at extranodal sites....
Authors: Wohlfart S, Sebinger D, Gruber P, Buch J, Polgar D, Krupitza G, Rosner M, Hengstschlager M, Raderer...

Neuromedin U: a Myb-regulated autocrine growth factor for human myeloid leukemias

The c-myb proto-oncogene has been implicated in leukemogenesis, but possible mechanisms remain ill defined. To gain further insight to this process, we used transcript profiling in K562 cells expressing a dominant-negative Myb (MERT) protein. A total...
Authors: Shetzline SE, Rallapalli R, Dowd KJ, Zou S, Nakata Y, Swider CR, Kalota A, Choi JK and Gewirtz AM

Bucillamine induces the synthesis of vascular endothelial growth factor dose-dependently in systemic sclerosis fibroblasts via nuclear factor-B and simian virus 40 promoter factor 1 pathways

The pathogenesis of systemic sclerosis (SSc) is characterized by activation of the immune system, impaired angiogenesis, and activated dermal fibroblasts. The effects of the immunosuppressive agent bucillamine (SA 96) on fibroblasts and angiogenic...
Authors: Distler JHW, Hagen C, Hirth A, Muller-Ladner U, Lorenz HM, del Rosso A, Michel BA, Gay RE, Nanagara...

Interleukin-2-induced survival of natural killer (NK) cells involving phosphatidylinositol-3 kinase-dependent reduction of ceramide through acid sphingomyelinase, sphingomyelin synthase and glucosylceramide synthase

Interleukin 2 (IL-2) rescued human natural killer (NK) KHYG-1 cells from apoptosis along with a reduction of ceramide. Conversely, an increase of ceramide inhibited IL-2-rescued survival. IL-2 deprivation-induced activation of acid sphingomyelinase...
Authors: Taguchi Y, Kondo T, Watanabe M, Miyaji M, Umehara H, Kotutumi Y, Okazaki T

Toll-like receptor signaling alters the expression of regulator of g protein signaling proteins in dendritic cells: implications for g protein-coupled receptor signaling

Conserved structural motifs on pathogens trigger pattern recognition receptors present on APCs such as dendritic cells (DCs). An important class of such receptors is the Toll-like receptors (TLRs). TLR signaling triggers a cascade of events in DCs...
Authors: Shi GX, Harrison K, Han SB, Moratz C and Kehrl JH

Epigenetic silencing of the immunoglobulin heavy chain gene in classical Hodgkin lymphoma-derived cell lines contributes to the loss of immunoglobulin expression

Immunoglobulin production is impaired in Hodgkin and Reed-Sternberg (HRS) cells of classical Hodgkin lymphoma (cHL) in spite of functional clonal rearrangements. The presence of "crippling" mutations in coding and regulatory regions, as well as...
Authors: Ushmorov A, Ritz O, Hummel M, Leithauser F, Moller P, Stein H and Wirth T

Cutting Edge: TGF-beta Induces a Regulatory Phenotype in CD4(+)CD25(-) T Cells through Foxp3 Induction and Down-Regulation of Smad7

CD4(+)CD25(+) regulatory cells are a subpopulation of T lymphocytes of thymic origin. However, recent data suggest an alternative commitment of regulatory T cells in the periphery, although the precise mechanism is unknown. In the present work, we...
Authors: Fantini MC, Becker C, Monteleone G, Pallone F, Galle PR and Neurath MF
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