TY - JOUR A1 - Schneider-Schaulies, Jürgen A1 - Hünig, T. A1 - Schimpl, A. A1 - Wecker, E. T1 - Kinetics of cellular oncogene expression in mouse lymphocytes ; I. Expression of c-myc and c-ras Ha in T lymphocytes induced by various mitogens N2 - Murine spienie T lymphocytes display maximal cellular myc gene (c-myc) expression already 3 h after concanavalin A timulation and sub equent down-regulation before the onset of DNA syntbesis. Stimulation by leucoagglulinin in the prcsence or absence of interleukin 2 Ieads to only low initiaJ Ievels of c-myc-specific RNA which, however, increase later on. A similar pattero of c-myc expression is shown by the Lyt- 2+ T cell subpopulation stimuiated with eilher concanavalin A or leucoagglutinin in the prescncc of interleukin 2. Although eH]thyn1idine incorporation was identical, the leucoagglutinin-stimulated Lyt-2+ T cells werc void of any demon. trable c-mycspeci. fic RNA at 3 h post-stimulation. Thus, the kinetics of c-myc expression in mause T lymphocytes arenot at all uniform, but depend on the mitogen and the subpopulation. [n contrast, lcvel8 of c-rasH•-spccific R A wcre always low at early times, always increased towards tbe onset ofDNA synthesis and down-regulationwas not observed. KW - Immunologie Y1 - 1986 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-54803 ER - TY - JOUR A1 - Grummt, F. A1 - Weinmann-Dorsch, C. A1 - Schneider-Schaulies, Jürgen A1 - Lux, A. T1 - Zinc as a second messenger of mitogenic induction N2 - DNA synthesis and adenosine(S')tetraphosphate(S ')adenosine (Ap.A) levels decrease in cells treated with EDTA. The inhibitory effect of EDTA can be reversed with micro molar amounts of ZnCI2• ZnCh in micromolar concentrations also inhibits Ap.A hydrolase and stimulates amino acid-dependent Ap.A synthesis, suggesting that Zn2+ is modulating intracellular Ap.A pools. Serum addition to GI-arrested cells enhances uptake of Zn, whereas serum depletion leads to a fivefold decrease of the rates of zinc uptake. These results are discussed by regarding Zn2+ as a putative 'second messenger' of mitogenic induction and Ap.A as a possible 'third messenger' and trigger of DNA synthesis. KW - Immunologie Y1 - 1986 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-54799 ER - TY - THES A1 - Schneider-Schaulies, Jürgen T1 - Expression von zellulären Onkogenen in T-Lymphozyten der Maus und Regulation der c-fos und c-myc Genexpression KW - Genexpression KW - Lymphozyt Y1 - 1986 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-54815 ER - TY - JOUR A1 - Schneider-Schaulies, Jürgen A1 - Knauer, R. A1 - Hünig, T. A1 - Schimpl, A. A1 - Wecker, E. T1 - Induction of c-onc expression in polyclonally activated mouse lymphocytes N2 - No abstract available KW - Lymphozyt Y1 - 1984 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-54784 ER - TY - JOUR A1 - Neumann-Haefelin, D. A1 - Rethwilm, Axel A1 - Bauer, G. A1 - Gudat, F. A1 - zur Hausen, H. T1 - Characterization of a foamy virus isolated from Cercopithecus aethiops lymphoblastoid cells N2 - A virus derived from cells of a Iymphoblastoid line originating from the lymph node of a healthy African green monkey was characterized as a typical member of the foamy virus subgroup of rctroviridac by its morphological, physicochemical, biological and biochemical properties (reverse transcriptase actvity). Besides the usual host range of foamy viruses, the isolated strain revealed a remarkable T -lymphotropism, distinguishing it from the prototypes of foamy viruses previously isolated from African green monkeys. Two foamy virus infectious are demonstrated in human contacts of the African green monkey colony, with the animal barbauring the isolate. KW - Virologie Y1 - 1983 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-61538 ER -