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  • 1
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    NF-kappa B subunit regulation in nontransformed CD4+ T lymphocytes (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-06-05
    Description: Regulation of interleukin-2 (IL-2) gene expression by the p50 and p65 subunits of the DNA binding protein NF-kappa B was studied in nontransformed CD4+ T lymphocyte clones. A homodimeric complex of the NF-kappa B p50 subunit was found in resting T cells. The amount of p50-p50 complex decreased after full antigenic stimulation, whereas the amount of the NF-kappa B p50-p65 heterodimer was increased. Increased expression of the IL-2 gene and activity of the IL-2 kappa B DNA binding site correlated with a decrease in the p50-p50 complex. Overexpression of p50 repressed IL-2 promoter expression. The switch from p50-p50 to p50-p65 complexes depended on a protein that caused sequestration of the p50-p50 complex in the nucleus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kang, S M -- Tran, A C -- Grilli, M -- Lenardo, M J -- New York, N.Y. -- Science. 1992 Jun 5;256(5062):1452-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immunology, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1604322" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD4/*immunology ; Base Sequence ; Binding Sites ; Cell Line ; Cell Nucleus/physiology ; Chloramphenicol O-Acetyltransferase/genetics/metabolism ; Clone Cells ; Columbidae ; DNA/genetics ; *Gene Expression Regulation ; Interleukin-2/*genetics ; Macromolecular Substances ; Mice ; Molecular Sequence Data ; NF-kappa B/*metabolism ; Oligonucleotide Probes ; Promoter Regions, Genetic ; RNA, Messenger/metabolism ; Recombinant Fusion Proteins/metabolism ; T-Lymphocyte Subsets/*immunology ; Transfection ; Tumor Necrosis Factor-alpha/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Transactivation by AP-1 is a molecular target of T cell clonal anergy (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-08-21
    Description: Anergy is a mechanism of T lymphocyte tolerance induced by antigen receptor stimulation in the absence of co-stimulation. Anergic T cells were shown to have a defect in antigen-induced transcription of the interleukin-2 gene. Analysis of the promoter indicated that the transcription factor AP-1 and its corresponding cis element were specifically down-regulated. Exposure of anergic T cells to interleukin-2 restored both antigen responsiveness and activity of the AP-1 element.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kang, S M -- Beverly, B -- Tran, A C -- Brorson, K -- Schwartz, R H -- Lenardo, M J -- New York, N.Y. -- Science. 1992 Aug 21;257(5073):1134-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1509265" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Presenting Cells/immunology ; Antigens/*immunology ; Base Sequence ; Binding Sites ; Blotting, Northern ; Cell Line ; Concanavalin A/pharmacology ; *Gene Expression Regulation ; *Immune Tolerance ; Interleukin-2/*genetics/pharmacology ; Mice ; Molecular Sequence Data ; Mutation ; Promoter Regions, Genetic/genetics ; Proto-Oncogene Proteins c-jun/*physiology ; RNA, Messenger/metabolism ; Receptors, Antigen, T-Cell/immunology ; T-Lymphocytes/*immunology ; Transcription, Genetic ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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    PAPER CURRENT
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