@article{SchneiderSchauliesSchneiderSchauliesSchusteretal.1994, author = {Schneider-Schaulies, Sibylle and Schneider-Schaulies, J{\"u}rgen and Schuster, A. and Bayer, M. and Pavlovic, J. and ter Meulen, V.}, title = {Cell type specific MxA-mediated inhibition of measles virus transcription in human brain cells}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62255}, year = {1994}, abstract = {No abstract available}, subject = {Virologie}, language = {en} } @article{SchneiderSchauliesSchnorrDunsteretal.1994, author = {Schneider-Schaulies, Sibylle and Schnorr, J.-J. and Dunster, L. M. and Schneider-Schaulies, J{\"u}rgen and ter Meulen, Volker}, title = {The role of host factors in measles virus persistence}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-54944}, year = {1994}, abstract = {As critical steps in the life cycle oJ measles virus (Mfl), the e.fficiency of uptake into and replication in susceptible host cells are governed by cellular determinants. Measles virus infections of cells of the human CNS are characterized by particular constraints imposed on v1:ral transcription and translation attenuating viral gene Junctions and thus contributing to the pathogenesis oJ MV persistence in these cells.}, subject = {Immunologie}, language = {en} } @article{SchneiderSchauliesSchneiderSchauliesBayeretal.1993, author = {Schneider-Schaulies, Sibylle and Schneider-Schaulies, J{\"u}rgen and Bayer, M. and L{\"o}ffler, S. and ter Meulen, V.}, title = {Spontaneous and differentiation dependent regulation of measles virus gene expression in human glial cells}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-54913}, year = {1993}, abstract = {The expression of measles virus (MV) in six different permanent human glioma cell lines (D-54, U-251, U-138, U-105, U-373, and D-32) was analyzed. Although all celllines were permissive for productive replication of all MV strains tested, U-251, D-54, and D-32 cells spontaneously revealed restrictions of MV transcription similar to those observed for primary rat astroglial cells and brain tissue. In vitro differentiation of D-54 and U-251 cells by substances affecting tbe intracellular cyclic AMP Ievel caused a significant reduction of tbe expression of tbe viral proteins after 18, 72, and 144 b of infection. This pronounced restriction was not paralleled to a comparable Ievel by an inhibition of tbe syntbesis and biological activity in vitro of virus·specific mRNAs as sbown by quantitative Northem (RNA) blot analyses and in vitro translation. The block in viral protein syntbesis could not be attributed to tbe induction of type I interferon by any of tbe substances tested. Our findings indicate tbat down-regulation of MV gene expression in human brain cells can occur by a cell type-rlependent regulation of tbe viral mRNA transcription and a differentiation-dependent regulation of translation, botb of wbicb may be crucial for the establisbment of persistent MV infections in tbe centrat nervous system.}, subject = {Immunologie}, language = {en} } @article{SchneiderSchauliesSchneiderSchauliesBrinkmannetal.1992, author = {Schneider-Schaulies, J{\"u}rgen and Schneider-Schaulies, Sibylle and Brinkmann, R. and Tas, P. and Halbr{\"u}gge, M. and Walter, U. and Holmes, H.C. and ter Meulen, Volker}, title = {HIV-1 gp120 receptor on CD4-negative brain cells activates a tyrosine kinase}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-54872}, year = {1992}, abstract = {Human immunodeficiency virus (HIV-1) infection in the human brain Ieads to characteristic neuropathological changes, which may result indirectly from interactions of the envelope glycoprotein gp 120 with neurons and/or glial cells. We therefore investigated the binding of recombinant gp120 (rgp120) to human neural cells and its effect on int~acellular.s.ignallin~. Herewe pre~ent evidence that rgp120, besides binding to galactocerebroside or galactosyl-sulfatlde, spec1f1cally bmds to a protem receptor of a relative molecular mass of approximately 180,000 Da (180 kDa) pre~ent. on the CD4-negative glioma cells D-54, but not on Molt4 T lymphocytes. Binding of rgp120 to this receptor rap1dly 1nduced a tyrosine-specific protein kinase activity leading to tyrosine phosphorylation of 130- and 115-kDa p~oteins. The c~ncentration of intracellular calciumwas not affected by rgp120 in these cells. Our data suggest a novel Signal transduc1ng HIV-1 gp120 receptor on CD4-negative glial cells, which may contribute to the neuropathological changes observed in HIV-1-infected brains.}, subject = {Immunologie}, language = {en} }