Search Results

The X-linked mental retardation protein oligophrenin-1 is required for dendritic spine morphogenesis

Of 11 genes involved in nonspecific X-linked mental retardation (MRX), three encode regulators or effectors of the Rho GTPases, suggesting an important role for Rho signaling in cognitive function. It remains unknown, however, how mutations in...

Authors: Govek EE, Newey SE, Akerman CJ, Cross JR, Van der Veken L and Van Aelst L

The LIM protein Ajuba influences p130Cas localization and Rac1 activity during cell migration

Cell migration requires extension of lamellipodia that are stabilized by formation of adhesive complexes at the leading edge. Both processes are regulated by signaling proteins recruited to nascent adhesive sites that lead to activation of Rho...

Authors: Pratt SJ, Epple H, Ward M, Feng Y, Braga VM and Longmore GD

New non-viral method for gene transfer into primary cells

The availability of genetically altered cells is an essential prerequisite for many scientific and therapeutic applications including functional genomics, drug development, and gene therapy. Unfortunately, the efficient gene transfer into primary...

Authors: Gresch O, Engel FB, Nesic D, Tran TT, England HM, Hickman ES, Korner I, Gan L, Chen S,...

The induction of matrix metalloproteinase and cytokine expression in synovial fibroblasts stimulated with immune cell microparticles

Rheumatoid arthritis is a chronic inflammatory disease characterized by destruction of cartilage and bone that is mediated by synovial fibroblasts. To determine the mechanisms by which these cells are activated to produce matrix metalloproteinases...

Authors: Distler JH, Jungel A, Huber LC, Seemayer CA, Reich CF 3rd, Gay RE, Michel BA, Fontana A, Gay S,...

Omenn syndrome due to ARTEMIS mutations

Omenn syndrome (OS) is characterized by severe combined immunodeficiency (SCID) associated with erythrodermia, hepatosplenomegaly, lymphadenopathy and alopecia. In OS patients, B-cells are mostly absent, T-cell counts are normal to elevated, and...

Authors: Ege M, Ma Y, Manfras B, Kalwak K, Lu H, Lieber MR, Schwarz K and Pannicke U

Inhibition of Granulocyte-Macrophage Colony-Stimulating Factor Signaling and Microglial Proliferation by Anti-CD45RO: Role of Hck Tyrosine Kinase and Phosphatidylinositol 3-Kinase/Akt

Increasing evidence suggests that CD45, a transmembrane protein tyrosine phosphatase, is an important modulator of macrophage activation. Microglia, resident brain macrophages, express CD45 and proliferate under pathologic conditions. In this study,...

Authors: Suh HS, Kim MO and Lee SC

EBV-Induced Gene 3 Transcription Is Induced by TLR Signaling in Primary Dendritic Cells via NF-(kappa)B Activation

The EBV-induced gene 3 (EBI3) is expressed in dendritic cells (DCs) and part of the cytokine IL-27 that controls Th cell development. However, its regulated expression in DCs is poorly understood. In the present study we demonstrate that EBI3 is...

Authors: Wirtz S, Becker C, Fantini MC, Nieuwenhuis EE, Tubbe I, Galle PR, Schild HJ, Birkenbach M, Blumberg...

p53CSV, a novel p53-inducible gene involved in the p53-dependent cell-survival pathway

Although a number of p53 target genes have been identified, the mechanisms of p53-dependent activities that determine cellular survival or death are still not fully understood. Here we report isolation of a novel p53 target gene, designated...

Authors: Park WR and Nakamura Y

IkappaB kinase promotes tumorigenesis through inhibition of forkhead FOXO3a

Nuclear exclusion of the forkhead transcription factor FOXO3a by protein kinase Akt contributes to cell survival. We investigated the pathological relationship between phosphoylated-Akt (Akt-p) and FOXO3a in primary tumors. Surprisingly, FOXO3a was...

Authors: Hu MC, Lee DF, Xia W, Golfman LS, Ou-Yang F, Yang JY, Zou Y, Bao S, Hanada N, Saso H, Kobayashi R...

Mitochondrial dysfunction induces triglyceride accumulation in 3T3-L1 cells: role of fatty acid -oxidation and glucose

Mitochondrial cytopathy has been associated with modifications of lipid metabolism in various situations, such as the acquisition of an abnormal adipocyte phenotype observed in multiple symmetrical lipomatosis or triglyceride (TG) accumulation in...

Authors: Vankoningsloo S, Piens M, Lecocq C, Gilson A, De Pauw A, Renard P, Demazy C, Houbion A, Raes M and...

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