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LINGO-1 is a component of the Nogo-66 receptor/p75 signaling complex

Axon regeneration in the adult CNS is prevented by inhibitors in myelin. These inhibitors seem to modulate RhoA activity by binding to a receptor complex comprising a ligand-binding subunit (the Nogo-66 receptor NgR1) and a signal transducing subunit...
Authors: Mi S, Lee X, Shao Z, Thill G, Ji B, Relton J, Levesque M, Allaire N, Perrin S, Sands B, Crowell T,...

The gene product Murr1 restricts HIV-1 replication in resting CD4+ lymphocytes

Although human immunodeficiency virus-1 (HIV-1) infects quiescent and proliferating CD4+ lymphocytes, the virus replicates poorly in resting T cells. Factors that block viral replication in these cells might help to prolong the asymptomatic phase of...
Authors: Ganesh L, Burstein E, Guha-Niyogi A, Louder MK, Mascola JR, Klomp LW, Wijmenga C, Duckett CS and...

The phosphatidylinositol phosphatase PTEN is under control of costimulation and regulates proliferation in human T cells

The phosphatidylinositol phosphatase gene PTEN is a dual specific phosphatase acting on phospho amino acids but also on three phosphorylated inositol phospholipids. Present results demonstrate that PTEN is inducible by costimulatory signals in human...
Authors: Schmidt-Weber CB, Wohlfahrt JG, Akdis CA and Blaser K

Evidence that high teleromerase activity may induce a senescent-like growth arrest in human fibroblasts

Expression of the catalytic subunit of human telomerase (hTERT), in normal human fibroblasts allows them to escape replicative senescence. However, we have observed that populations of hTERT-immortalized human fibroblasts contain 3-20% cells with a...
Authors: Gorbunova V, Seluanov A and Pereira-Smith OM

Ligand-independent redistribution of Fas (CD95) into lipid rafts mediates clonotypic T cell death

Clonotypic elimination of activated T cells through Fas-Fas ligand (CD95-CD95L) interactions is one mechanism of peripheral self-tolerance. T cell receptor (TCR) stimuli trigger FasL synthesis but also sensitize activated T cells to Fas-mediated...
Authors: Muppidi JR and Siegel RM

RGS13 regulates germinal center B lymphocytes responsiveness to CXC chemokine ligand (CXCL)12 and CXCL13

Normal lymphoid tissue development and function depend upon directed cell migration. Providing guideposts for cell movement and positioning within lymphoid tissues, chemokines signal through cell surface receptors that couple to heterotrimeric G...
Authors: Shi GX, Harrison K, Wilson GL, Moratz C and Kehrl JH

Amyloid precursor protein mediates proinflammatory activation of monocytic lineage cells

Alzheimer's disease is a progressive neurodegenerative disorder characterized by extracellular deposition of beta-amyloid (Abeta) peptide containing neuritic plaques. Abeta peptides are proteolytically derived from the membrane-bound amyloid...
Authors: Sondag CM and Combs CK

Efficient transfection method for primary cells

Transfection of primary cells and stem cells is a problem in the laboratory routine and further in tissue engineering and gene therapy. Most methods working effectively for cell lines in culture fail to transfect primary cells. Here we describe the...
Authors: Hamm A, Krott N, Breibach I, Blindt R and Bosserhoff AK

Targeting combinatorial transcriptional complex assembly at specific modules within the interleukin-2 promoter by immunosuppressant SB203580

The proximal promoter sequence of the interleukin-2 (IL-2) gene contains a series of composite sites or modules that controls much of its responsiveness to environmental stimuli. The integrated targeting of these modules is therefore a major mode of...
Authors: Smith JL, Collins I, Chandramouli GVR, Butscher WG, Zaitseva E, Freebern WJ, Haggerty CM, Doseeva V...

FAS (CD95) mutations are rare in gastric MALT lymphoma but occur more frequently in primary gastric diffuse large B-cell lymphoma

A loss of FAS (CD95) function has been proposed to constitute an important step in early mucosa-associated lymphoid tissue (MALT) lymphoma development and FAS mutations have been recognized in malignant lymphomas, in particular at extranodal sites....
Authors: Wohlfart S, Sebinger D, Gruber P, Buch J, Polgar D, Krupitza G, Rosner M, Hengstschlager M, Raderer...
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