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Efficient gene transfer into the human natural killer cell line, NKL, using the amaxa nucleofection system

Natural killer (NK) cell lines are useful for studying facets of NK cell biology. Such cell lines are notoriously difficult to transfect by traditional methods, a fact that has hampered NK cell biology studies for a long time. To overcome this, we...

Authors: Maasho K, Marusina A, Reynolds NM, Coligan JE and Borrego F

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

Nucleofection as an efficient nonviral transfection method for human monocytic cells

Despite some progress in the field of gene transfer into hard-to-transfect cells, so far an efficient nonviral method for monocytes has not been available. A comparison of plasmid DNA with capped and polyadenylated mRNA for enhanced green fluorescent...

Authors: Martinet W, Schrijvers DM and Kockx MM

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

Neuron-derived orphan receptor-1 (NOR-1) modulates vascular smooth muscle cell proliferation

Vascular smooth muscle cells (VSMCs) migration and proliferation play a key role in the pathophysiology of cardiovascular disease. However, the transcription factors that regulate VSMC activation are not completely characterized. By a...

Authors: Martinez-Gonzalez J, Rius J, CastellÜ³ A, Cases-Langhoff C and Badimon L

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

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

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

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

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

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