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  • 1
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    FADD: essential for embryo development and signaling from some, but not all, inducers of apoptosis (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-04-16
    Description: FADD (also known as Mort-1) is a signal transducer downstream of cell death receptor CD95 (also called Fas). CD95, tumor necrosis factor receptor type 1 (TNFR-1), and death receptor 3 (DR3) did not induce apoptosis in FADD-deficient embryonic fibroblasts, whereas DR4, oncogenes E1A and c-myc, and chemotherapeutic agent adriamycin did. Mice with a deletion in the FADD gene did not survive beyond day 11.5 of embryogenesis; these mice showed signs of cardiac failure and abdominal hemorrhage. Chimeric embryos showing a high contribution of FADD null mutant cells to the heart reproduce the phenotype of FADD-deficient mutants. Thus, not only death receptors, but also receptors that couple to developmental programs, may use FADD for signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yeh, W C -- de la Pompa, J L -- McCurrach, M E -- Shu, H B -- Elia, A J -- Shahinian, A -- Ng, M -- Wakeham, A -- Khoo, W -- Mitchell, K -- El-Deiry, W S -- Lowe, S W -- Goeddel, D V -- Mak, T W -- CA13106/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Mar 20;279(5358):1954-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Amgen Institute, University of Toronto, Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9506948" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Animals ; Antigens, CD95/genetics/physiology ; *Apoptosis ; Carrier Proteins/genetics/*physiology ; Cell Transformation, Neoplastic ; Cells, Cultured ; Doxorubicin/pharmacology ; *Embryonic and Fetal Development ; Endothelium, Vascular/embryology ; Fas-Associated Death Domain Protein ; Female ; Gene Expression ; Gene Targeting ; Heart/*embryology ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Mutation ; Oncogenes ; Receptors, Tumor Necrosis Factor/genetics/physiology ; Signal Transduction ; 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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    Requirement for the transcription factor LSIRF/IRF4 for mature B and T lymphocyte function (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-01-24
    Description: Lymphocyte-specific interferon regulatory factor (LSIRF) (now called IRF4) is a transcription factor expressed only in lymphocytes. Mice deficient in IRF4 showed normal distribution of B and T lymphocyes at 4 to 5 weeks of age but developed progressive generalized lymphadenopathy. IRF4-deficient mice exhibited a profound reduction in serum immunoglobulin concentrations and did not mount detectable antibody responses. T lymphocyte function was also impaired in vivo; these mice could not generate cytotoxic or antitumor responses. Thus, IRF4 is essential for the function and homeostasis of both mature B and mature T lymphocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mittrucker, H W -- Matsuyama, T -- Grossman, A -- Kundig, T M -- Potter, J -- Shahinian, A -- Wakeham, A -- Patterson, B -- Ohashi, P S -- Mak, T W -- New York, N.Y. -- Science. 1997 Jan 24;275(5299):540-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, University of Toronto, Toronto, Ontario, M5G 2C1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8999800" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen Presentation ; B-Lymphocytes/*immunology ; Bone Marrow Cells ; Cytotoxicity, Immunologic ; DNA-Binding Proteins/genetics/*physiology ; Female ; Gene Targeting ; Graft vs Host Reaction ; Immunization ; Immunoglobulins/blood ; Interferon Regulatory Factors ; Lymphatic Diseases/etiology ; Lymphocyte Activation ; Lymphocyte Subsets/cytology ; Lymphoid Tissue/cytology ; Male ; Mast-Cell Sarcoma/immunology ; Mice ; Mice, Inbred C57BL ; Mice, SCID ; Neoplasm Transplantation ; T-Lymphocytes/*immunology ; T-Lymphocytes, Cytotoxic/immunology ; Transcription Factors/genetics/*physiology
    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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  • 3
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    Lymphoproliferative disorders with early lethality in mice deficient in Ctla-4 (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-11-10
    Description: The role of the cell-surface molecule CTLA-4 in the regulation of T cell activation has been controversial. Here, lymph nodes and spleens of CTLA-4-deficient mice accumulated T cell blasts with up-regulated activation markers. These blast cells also infiltrated liver, heart, lung, and pancreas tissue, and amounts of serum immunoglobulin were elevated. The mice invariably became moribund by 3 to 4 weeks of age. Although CTLA-4-deficient T cells proliferated spontaneously and strongly when stimulated through the T cell receptor, they were sensitive to cell death induced by cross-linking of the Fas receptor and by gamma irradiation. Thus, CTLA-4 acts as a negative regulator of T cell activation and is vital for the control of lymphocyte homeostasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Waterhouse, P -- Penninger, J M -- Timms, E -- Wakeham, A -- Shahinian, A -- Lee, K P -- Thompson, C B -- Griesser, H -- Mak, T W -- New York, N.Y. -- Science. 1995 Nov 10;270(5238):985-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, University of Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481803" target="_blank"〉PubMed〈/a〉
    Keywords: Abatacept ; Animals ; Antigens, CD/analysis ; Antigens, CD95/metabolism ; Antigens, Differentiation/genetics/*physiology ; Apoptosis ; B-Lymphocytes/immunology ; CTLA-4 Antigen ; Cells, Cultured ; Concanavalin A/pharmacology ; Female ; Gamma Rays ; Gene Targeting ; Homeostasis ; *Immunoconjugates ; Immunoglobulins/blood ; Immunophenotyping ; Lymph Nodes/immunology/pathology ; *Lymphocyte Activation ; Lymphoproliferative Disorders/*immunology/pathology ; Male ; Mice ; Mice, Inbred C57BL ; Spleen/immunology/pathology ; T-Lymphocytes/*immunology
    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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  • 4
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    Differential T cell costimulatory requirements in CD28-deficient mice (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-30
    Description: T cell receptor stimulation without costimulation is insufficient for the induction of an optimal immune response. It is thought that engagement of the CD28 molecule with its ligand B7 provides an essential costimulatory signal without which full activation of T cells cannot occur. A mouse strain with a defective CD28 gene was established. Development of T and B cells in the CD28-deficient mice appeared normal. However, T lymphocytes derived from CD28-/- mutant mice had impaired responses to lectins. Lectin stimulation did not trigger interleukin-2 (IL-2) production, IL-2 receptor alpha expression was significantly decreased, and exogenous IL-2 only partially rescued the CD28 defect. Basal immunoglobulin (Ig) concentrations in CD28-deficient mice were about one-fifth of those found in wild-type controls, with low titers of IgG1 and IgG2b but an increase in IgG2a. In addition, activity of T helper cells in CD28-/- mice was reduced and immunoglobulin class switching was diminished after infection with vesicular stomatitis virus. However, cytotoxic T cells could still be induced and the mice showed delayed-type hypersensitivity after infection with lymphocytic choriomeningitis virus. Thus, CD28 is not required for all T cell responses in vivo, suggesting that alternative costimulatory pathways may exist.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shahinian, A -- Pfeffer, K -- Lee, K P -- Kundig, T M -- Kishihara, K -- Wakeham, A -- Kawai, K -- Ohashi, P S -- Thompson, C B -- Mak, T W -- New York, N.Y. -- Science. 1993 Jul 30;261(5121):609-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Biophysics and Immunology, University of Toronto, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7688139" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Viral/blood ; Antigens, CD/genetics/*immunology ; Antigens, CD28 ; Antigens, CD80 ; Antigens, Differentiation, T-Lymphocyte/genetics/*immunology ; Antigens, Surface/immunology ; B-Lymphocytes/immunology ; Concanavalin A/pharmacology ; Immunoglobulins/blood ; Interleukin-2/biosynthesis/pharmacology ; *Lymphocyte Activation ; Lymphocytic Choriomeningitis/immunology ; Mice ; Mice, Inbred C57BL ; Mice, Inbred DBA ; Mice, Mutant Strains ; Mutation ; Receptors, Interleukin-2/metabolism ; T-Lymphocytes/*immunology ; T-Lymphocytes, Cytotoxic/immunology ; T-Lymphocytes, Helper-Inducer/immunology ; Vesicular stomatitis Indiana virus/immunology ; Virus Diseases/immunology
    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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  • 5
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    CD4 T cells, lymphopenia, and IL-7 in a multistep pathway to autoimmunity (2008)
    National Academy of Sciences
    Details
    Publication Date: 2008-02-14
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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