Search Results

Biochemical and functional characterization of Rab27a mutations occurring in Griscelli syndrome patients

Rab27a is a member of the Rab family of small GTPase proteins, and thus far is the first member to be associated with a human disease (ie, the Griscelli syndrome type 2). Mutations in the Rab27a gene cause pigment as well as cytotoxic granule...

Authors: Menasche G, Feldmann J, Houdusse A, Desaymard C, Fischer, Goud B and de Saint Basile G

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

Downregulation of TGFbeta isoforms and their receptors contributes to keratinocyte hyperproliferation in psoriasis vulgaris

BACKGROUND: Psoriasis vulgaris is a chronic inflammatory disorder characterized by epidermal hyperproliferation. Transforming growth factor beta (TGFbetas) have a major antiproliferative action in epidermis. OBJECTIVE: We evaluated the distribution...

Authors: Doi H, Shibata MA, Kiyokane K and Otsuki Y

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...

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...

Focal adhesion kinase signaling promotes phagocytosis of integrin-bound photoreceptors

Daily alphavbeta5 integrin-dependent phagocytosis of spent photoreceptor outer segment fragments by the retinal pigment epithelium (RPE) is critical for retinal function. This study identifies a key role for focal adhesion kinase (FAK) in RPE...

Authors: Finnemann SC

Memory and flexibility of cytokine gene expression as separable properties of human TH1 and TH2 lymphocytes

CD4+ T cell priming under T helper type I (T(H)1) or T(H)2 conditions gives rise to polarized cytokine gene expression. We found that in these conditions human naive T cells acquired stable histone hyperacetylation at either the Ifng or Il4 promoter....

Authors: Messi M, Giacchetto I, Nagata K, Lanzavecchia A, Natoli G and Sallusto F

Activation of resting human primary T cells with chimeric receptors: costimulation from CD28, inducible costimulator, CD134, and CD137 in series with signals from the TCRzeta chain

Chimeric receptors that include CD28 signaling in series with TCRzeta in the same receptor have been demonstrated to activate prestimulated human primary T cells more efficiently than a receptor providing TCRzeta signaling alone. We examined whether...

Authors: Finney HM, Akbar AN and Lawson ADG

Analysis of intracellular storage and regulated secretion of three von Willebrands disease-causing variants of von Willebrand factor

The rapid exocytosis of von Willebrand factor (VWF) in response to vascular injury can be attributed to the fact that VWF is stored in the Weibel-Palade bodies (WPBs) of endothelial cells. We describe a system for examining the ability of VWF to...

Authors: Michaux G, Hewlett LJ, Messenger SL, Goodeve AC, Peake IR, Daly ME and Cutler DF

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

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