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Proteasome inhibition results in TRAIL sensitization of primary keratinocytes by removing the restistance-mediating block of effector caspase maturation

Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) exerts potent cytotoxic activity against transformed keratinocytes, whereas primary keratinocytes are relatively resistant. In several cell types, inhibition of the proteasome sensitizes...

Authors: Leverkus M, Sprick MR, Wachter T, Mengling T, Baumann B, Serfling E, Brocker EB, Goebeler M, Neumann...

Differential localization and function of ADP-ribosylation factor-6 in anergic human T cells: a potential marker for their identification

Anergy is a state of immunologic tolerance in which T cells are viable but incapable of responding to antigenic stimulation. Recent data indicate that anergic cells have a distinct gene expression program that determines their unique function. In...

Authors: Tzachanis D, Appleman LJ, van Puijenbroek AAFL, Berezovskaya A, Nadler LM and Boussiotis VA

BPAG1n4 is essential for retrograde axonal transport in sensory neurons

Disruption of the BPAG1 (bullous pemphigoid antigen 1) gene results in progressive deterioration in motor function and devastating sensory neurodegeneration in the null mice. We have previously demonstrated that BPAG1n1 and BPAG1n3 play important...

Authors: Liu JJ, Ding J, Kowal AS, Nardine T, Allen E, Delcroix JD, Wu C, Mobley W, Fuchs E and Yang Y

Combined spatial and enzymatic regulation of Csk by cAMP and protein kinase A inhibits T cell receptor signaling

Raft-associated Csk controls signaling through the T cell receptor (TCR) and was mainly anchored to Cbp/PAG (phosphoprotein associated with glycosphingolipid-enriched membrane domains). Treatment of cells with the cAMP-elevating agent prostaglandin...

Authors: Vang T, Abrahamsen H, Myklebust S, Horejesi V and Taskén K

Src family protein-tyrosine kinases alter the function of PTEN to regulate phosphatidylinositol 3-kinase/AKT cascades

Src family protein-tyrosine kinases, which play an important role in signal integration, have been implicated in tumorigenesis in multiple lineages, including breast cancer. We demonstrate, herein, that Src kinases regulate the phosphatidylinositol...

Authors: Lu Y, Yu Q, Liu JH, Zhang J, Wang H, Koul D, McMurray JS, Fang X, Yung WKA, Siminovitch KA and Mills...

A central role for the Jun-N-terminal kinase pathway in mediating the antagonistic activity of pro-inflammatory cytokines against transforming growth factor-beta-driven Smad3/4 specific gene expression

We have focused our attention on the molecular events underlying the antagonistic activities of pro-inflammatory cytokines against transforming growth factor-beta (TGF-beta)/SMAD signaling. Using jnk1/2-knockout (jnk(-/-)) and I kappa B...

Authors: Verrecchia F, Tacheau C, Wagner EF and Mauviel A

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

Distinct involvement of the Jun-N-terminal kinase and NF-kappaB pathways in the expression of the human COL1A2 gene by TNF-alpha

We used a gene knockout approach to elucidate the specific roles played by the Jun-N-terminal kinase (JNK) and NF-kappaB pathways downstream of TNF-alpha in the context of alpha(2) type I collagen gene (COL1A2) expression. In JNK1-/--JNK2-/- (JNK-/-)...

Authors: Verrecchia F, Wagner EF and Mauviel A

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

Coordinate notch 3-hairy related transscription factor pathway regulation in response to arterial injury: mediator role of PDGF and ERK

The Notch family of receptors and downstream effectors plays a critical role in cell fate determination during vascular ontogeny. Moreover, the human cerebral autosomal dominant artriopathy with subcortical infarcts and leukoencephalopathy (CADASIL)...

Authors: Wang W, Campos AH, Prince CZ, Mou Y and Pollmann MJ

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