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4968 results sorted by

Macrophage migration inhibitory factor (MIF) promotes cell survival by activation of the Akt pathway and role for CSN5/JAB1 in the control of autocrine MIF activity

The phosphoinositide-3-kinase (PI3K)/Akt signaling pathway plays an important role in cell survival and the development of cancer. Macrophage migration inhibitory factor (MIF) is a critical inflammatory cytokine that was recently associated with...
Authors: Lue H, Thiele M, Franz J, Dahl E, Speckgens S, Leng L, Fingerle-Rowson G, Bucala R, Luscher B,...

Induction of Vascular Permeability: betaPIX and GIT1 Scaffold the Activation of Extracellular Signal-regulated Kinase by PAK

Increased permeability of blood vessels is an important component of inflammation, but in some circumstances it contributes to tissue injury and organ failure. Previous work showed that p21-activated kinase (PAK) is a critical regulator of...
Authors: Stockton R, Reutershan J, Scott D, Sanders J, Ley K, Schwartz MA

Identification of two signaling submodules within the CrkII/ELMO/Dock180 pathway regulating engulfment of apoptotic cells

Removal of apoptotic cells is a dynamic process coordinated by ligands on apoptotic cells, and receptors and other signaling proteins on the phagocyte. One of the fundamental challenges is to understand how different phagocyte proteins form specific...
Authors: Tosello-Trampont AC, Kinchen JM, Brugnera E, Haney LB, Hengartner MO, Ravichandran KS

Suppression of microRNA-silencing pathway by HIV-1 during virus replication

MicroRNAs (miRNAs) are single-stranded noncoding RNAs of 19 to 25 nucleotides that function as gene regulators and as a host cell defense against both RNA and DNA viruses. We provide evidence for a physiological role of the miRNA-silencing machinery...
Authors: Triboulet R, Mari B, Lin YL, Chable-Bessia C, Bennasser Y, Lebrigand K, Cardinaud B, Maurin T,...
SST Peer Reviewed

The loss of immunodominant epitopes affects interferon-gamma production and lytic activity of the human influenza virus-specific cytotoxic T lymphocyte response in vitro

In the present study, we examined the effect of the loss of the human leucocyte antigen (HLA)-B*3501-restricted nucleoprotein (NP)(418-426) epitope on interferon (IFN)-gamma-production and lytic activity of the human cytotoxic T lymphocyte (CTL)...
Authors: Berkhoff EG, Geelhoed-Mieras MM, Verschuren EJ, van Baalen CA, Gruters RA, Fouchier RA, Osterhaus...

Retinoic Acid regulates CD1d gene expression at the transcriptional level in human and rodent monocytic cells

CD1d belongs to a group of nonclassical antigen-presenting molecules that present glycolipid antigens and thereby activate natural killer T (NKT) cells, a subset of bifunctional T cells. Little is known so far regarding the expression and physiologic...
Authors: Chen Q, Ross AC

Elucidation of intracellular recycling pathways leading to exocytosis of the Fc receptor, FcRn, by using multifocal plane microscopy

The intracellular events on the recycling pathway that lead from sorting endosomes to exocytosis at the plasma membrane are central to cellular function. However, despite intensive study, these processes are poorly characterized in spatial and...
Authors: Prabhat P, Gan Z, Chao J, Ram S, Vaccaro C, Gibbons S, Ober RJ, Ward ES

Live cell imaging of phagosome maturation in Staphylococcus aureus infected human endothelial cells: small colony variants are able to survive in lysosomes

Small colony variants (SCVs) of Staphylococcus aureus have been proposed to persist within vascular endothelium, thereby sustaining chronic infections. To identify the intracellular SCV location we infected primary human endothelial cells with...
Authors: Schroder A, Kland R, Peschel A, von Eiff C, Aepfelbacher M

Vasoactive intestinal peptide transactivates the androgen receptor through a PKA-dependent extracellular signal-regulated kinase pathway in prostate cancer LNCaP cells

Acquisition of androgen independence by prostate cancer is the key problem of prostate cancer progression. Vasoactive intestinal peptide (VIP), a neuropeptide, may act as a survival factor for prostate cancer cells under androgen deprivation....
Authors: Xie Y, Wolff DW, Lin MF, Tu Y
SST Peer Reviewed

Neogenin-RGMa Signaling at the Growth Cone Is Bone Morphogenetic Protein-independent and Involves RhoA, ROCK, and PKC

The repulsive guidance molecule RGMa has been shown to induce outgrowth inhibition of neurites by interacting with the transmembrane receptor neogenin. Here we show that RGMa-induced growth cone collapse is mediated by activation of the small GTPase...
Authors: Conrad S, Genth H, Hofmann F, Just I, Skutella T
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