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Weibel-Palade bodies recruit Rab27 by a content-driven, maturation-dependent mechanism that is independent of cell type

The identification of organelles is crucial for efficient cellular function, yet the basic underlying mechanisms by which this might occur have not been established. One group of proteins likely to be central to organelle identity is the Rab family...
Authors: Hannah MJ, Hume AN, Arribas M, Williams R, Hewlett LJ, Seabra MC and Cutler DF

Targeting combinatorial transcriptional complex assembly at specific modules within the interleukin-2 promoter by immunosuppressant SB203580

The proximal promoter sequence of the interleukin-2 (IL-2) gene contains a series of composite sites or modules that controls much of its responsiveness to environmental stimuli. The integrated targeting of these modules is therefore a major mode of...
Authors: Smith JL, Collins I, Chandramouli GVR, Butscher WG, Zaitseva E, Freebern WJ, Haggerty CM, Doseeva V...

Imaging antigen-induced PI3K activation in T cells

Imaging antigen-induced PI3K activation in T cells. Harriague J, Bismuth G. Departement de Biologie Cellulaire, Institut Cochin, INSERM U567, CNRS UMR 7627, Universite Rene Descartes, 22 rue Mechain, 75014 Paris, France. Activation of...
Authors: Harriague J and Bismuth G

The cyclic adenosine 5' monophosphate response element modulator supresses IL-2 production in stimulated T cells by a chromatin-dependent mechanism

The production of IL-2 is tightly controlled by several transcription factors that bind to the IL-2 promoter. The cAMP response element modulator (CREM) is known to form complexes with CREB and bind to the -180 site of the IL-2 promoter in anergic...
Authors: Tenbrock K, Juang YT, Tolnay M and Tsokos GC

Regulation of Bcl-2 expression by C/EBP in t(14;18) lymphoma cells

In follicular lymphomas with the t(14;18) translocation, there is increased expression of the bcl-2 gene, which is dependent upon regulatory elements within the bcl-2 5' flanking region and the immunoglobulin heavy-chain gene enhancers. We found that...
Authors: Heckman CA, Wheeler MA and Boxer LM

NF-kappaB regulates the expression of human complement receptor 2 gene

CR2 is a key regulator of the B cell response to Ag. Here we show that NF-kappaB enhances the expression of the human CR2 gene. Promoter truncation, deletion, and mutagenesis studies indicated a functional role for a consensus NF-kappaB promoter...
Authors: Tolnay M, Vereshchagina LA and Tsokos GC

Disruption of basal JNK activity differentially affects key fibroblast function important for wound healing

We used both a gene knockout approach and pharmacologic modulation to study the implication of the JNK pathway in regulating fibroblast motility, capacity to contract mechanically unloaded collagen gels, and type I collagen gene expression in vitro....
Authors: Javelaud D, Laboureau J, Gabison E, Verrecchia F and Mauviel A

Wnt-5a inhibits the canonical Wnt pathway by promoting GSK-3-independent-catenin degradation

Wnts are secreted signaling molecules that can transduce their signals through several different pathways. Wnt-5a is considered a noncanonical Wnt as it does not signal by stabilizing beta-catenin in many biological systems. We have uncovered a new...
Authors: Topol L, Jiang X, Choi H, Garrett-Beal L, Carolan PJ and Yang Y

Granulocyte-macrophage colony-stimulating factor and interleukin-3 induce cell cycle progression through the synthesis of c-Myc protein by internal ribosome entry site-mediated translation via phosphatidylinositol 3-kinase pathway in human factor-dependent leukemic cells

Granulocyte-macrophage colony-stimulating factor and interleukin-3 induce cell cycle progression through the synthesis of c-Myc protein by internal ribosome entry site-mediated translation via phosphatidylinositol 3-kinase pathway in human...
Authors: Kobayashi N, Saeki K and Yuo A

Rapid and highly efficient gene transfer into natural killer cells by nucleofection

Natural killer (NK) cells are important mediators of virus- and tumor-specific immune responses. The transfection of genes into NK cells has been proven difficult and so far requires infection with virus-based vectors. Here, the application of a...
Authors: Trompeter HI, Weinhold S, Thiel C, Wernet P and Uhrberg M
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