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4853 results sorted by

The Production of IL-1 Receptor Antagonist in IFN--Stimulated Human Monocytes Depends on the Activation of Phosphatidylinositol 3-Kinase but Not of STAT1

Division of Immunology and Allergy, Clinical Immunology Unit, Faculty of Medicine, University Hospital, Geneva, Switzerland. IFN-beta induces the production of secreted IL-1R antagonist (sIL-1Ra) without triggering synthesis of the agonist...
Authors: Molnarfi N, Hyka-Nouspikel N, Gruaz L, Dayer JM and Burger D

New invMED1 element cis-activates human multidrug-related MDR1 and MVP genes, involving the LRP130 protein

The MDR1 gene is a key component of the cytotoxic defense network and its overexpression results in the multidrug resistance (MDR) phenotype. However, the molecular mechanisms that regulate the MDR1 gene and coordinate multiple MDR-related genes...
Authors: Labialle S, Dayan G, Gayet L, Rigal D, Gambrelle J and Baggetto LG

Up-regulation of the lymphatic marker podoplanin, a mucin-type transmembrane glycoprotein, in human squamous cell carcinomas and germ cell tumors

The mucin-type glycoprotein podoplanin is specifically expressed by lymphatic but not blood vascular endothelial cells in culture and in tumor-associated lymphangiogenesis, and podoplanin deficiency results in congenital lymphedema and impaired...
Authors: Schacht V, Dadras SS, Johnson LA, Jackson DG, Hong YK and Detmar M

Tumor necrosis factor-alpha induces transforming growth factor-beta1 expression in lung fibroblasts through the extracellular signal-regulated kinase pathway

Increased expression of transforming growth factor (TGF)-beta1 and tumor necrosis factor (TNF)-alpha are thought to play important roles in the development of pulmonary fibrosis. We recently reported that TNF-alpha upregulates TGF-beta1 expression in...
Authors: Sullivan DE, Ferris M, Pociask D, Brody AR

Efficient transfection of embryonic and adult stem cells

The ability of embryonic stem cells and adult stem cells to differentiate into specific cell types holds immense potential for therapeutic use in cell and gene therapy. Realization of this potential depends on efficient and optimized protocols for...
Authors: Lakshmipathy U, Pelacho B, Sudo K, Linehan JL, Coucouvanis E, Kaufman DS and Verfaillie CM
SST Peer Reviewed

Involvement of BLT1 Endocytosis and Yes Kinase Activation in Leukotriene B4-Induced Neutrophil Degranulation

One of the important biological activities of human neutrophils is degranulation, which can be induced by leukotriene B(4) (LTB(4)). Here we investigated the intracellular signaling events involved in neutrophil degranulation mediated by the high...
Authors: Gaudreault E, Thompson C, Stankova J and Rola-Pleszczynski M

mRNA but not plasmid DNA is efficiently transfected in murine J774A.1 macrophages

Previous studies demonstrated that macrophages are difficult to transfect. In the present study, we investigated whether J774A.1 macrophages can be efficiently transfected using nucleofector technology. Nucleofection of J774A.1 macrophages with mRNA...
Authors: Van De Parre TJ, Martinet W, Schrijvers DM, Herman AG and De Meyer GR

The Nuclear IB Protein IBNS Selectively Inhibits Lipopolysaccharide-Induced IL-6 Production in Macrophages of the Colonic Lamina Propria

Macrophages play an important role in the pathogenesis of chronic colitis. However, it remains unknown how macrophages residing in the colonic lamina propria are regulated. We characterized colonic lamina proprial CD11b-positive cells (CLPMphi)....
Authors: Hirotani T, Lee PY, Kuwata H, Yamamoto M, Matsumoto M, Kawase I, Akira S and Takeda K

Impact of SRC homology 2-containing inositol 5'-phosphatase 2 gene polymorphisms detected in a Japanese population on insulin signaling

Src homology 2-containing 5'-inositol phosphatase 2 (SHIP2) is known to be one of lipid phosphatases converting PI(3,4,5)P3 to PI(3,4)P2 in the negative regulation of insulin signaling with the fundamental impact on the state of insulin resistance....
Authors: Kagawa S, Sasaoka T, Yaguchi S, Ishihara H, Tsuneki H, Murakami S, Fukui K, Wada T, Kobayashi S,...

REV1 accumulates in DNA damage-induced nuclear foci in human cells and is implicated in mutagenesis by benzo[a]pyrenediolepoxide

The REV1 gene encodes a Y-family DNA polymerase that has been postulated to have both catalytic and structural functions in translesion replication past UV photoproducts in mammalian cells. To examine if REV1 is implicated in DNA damage tolerance...
Authors: Mukhopadhyay S, Clark DR, Watson NB, Zacharias W and McGregor WGx