Bianca Obermaier

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It is widely believed that generation of mature dendritic cells (DCs) with full T cell stimulatory capacity from human monocytes in vitro requires 5-7 days of differentiation with GM-CSF and IL-4, followed by 2-3 days of activation. Here, we report a new strategy for differentiation and maturation of monocyte-derived DCs within only 48 h of in vitro(More)
Catecholamine treatment of isolated rat adipocytes decreases insulin binding and inhibits insulin stimulation of the glucose-transport system. There is increasing evidence that the insulin signal is transmitted after insulin is bound to the receptor via a tyrosine kinase, which is an intrinsic part of the receptor. To find whether the receptor kinase is(More)
BACKGROUND Recent studies have suggested that, in addition to Toll-like receptor (TLR) 2, other pattern recognition receptors mediate activation of the immune response after infection of the central nervous system (CNS) with Streptococcus pneumoniae (SP). METHODS Using a mouse meningitis model, we investigated the influence of TLR4 single deficiency(More)
Phorbol ester treatment of isolated rat adipocytes inhibits insulin stimulation of the glucose transport system. We studied whether this effect is related to a modification of the insulin receptor kinase. Insulin receptor of tetradecanoyl-beta-phorbol acetate (TPA)-treated adipocytes was solubilized and partially purified, and its kinase activity was(More)
The insulin receptor contains in its beta-subunit a tyrosine (-) specific protein kinase. It is believed that transmission of an insulin signal across the plasma membrane of target cells of insulin action occurs through activation of this kinase, autophosphorylation of the insulin receptor beta-subunit and subsequent phosphorylation of other cellular(More)
Tumour-promoting phorbol esters have insulin-like effects on glucose transport and lipogenesis in adipocytes and myocytes. It is believed that insulin activates the glucose-transport system through translocation of glucose transporters from subcellular membranes to the plasma membrane. The aim of the present study was to investigate if phorbol esters act(More)
Myeloid cells, including neutrophils and macrophages, play important roles in innate immune defense against acute bacterial infections. Myeloid Src family kinases (SFKs) p59/61(hck) (Hck), p58(c-fgr) (Fgr), and p53/56(lyn) (Lyn) are known to control integrin beta(2) signal transduction and FcgammaR-mediated phagocytosis in leukocytes. In this study, we show(More)
Dendritic cells (DC) can be derived from monocytes in vitro by culture with granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin-4 (IL-4). It is unknown whether this regimen reflects DC differentiation from blood precursors under physiological conditions. Induction of DC development from monocytes by interferon-alpha (IFN-alpha) may(More)
Receptor-associated protein kinase activity has been shown in all primary target tissues of insulin action in the rat and a function of insulin receptor phosphorylation in signal transmission was proposed. Insulin receptor phosphorylation so far has not been demonstrated in human target tissues of insulin. We describe here insulin receptor kinase activity(More)
It is speculated that the transmission of an insulin signal across the plasma membrane of cells occurs through activation of the tyrosine-specific receptor kinase, autophosphorylation of the receptor, and subsequent phosphorylation of unidentified substrates in the cell. In an attempt to identify possible substrates, we labeled intact rat fat cells with(More)