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  • 1
    Publication Date: 1989-06-23
    Description: Although the T cell receptor (TCR) alpha beta heterodimer and its encoding genes have been characterized, a cell-free form of this receptor, which is needed for the study of functional or ligand-binding properties of the receptor, has not previously been isolated. When the cell-free supernatant products of activated cloned T helper (TH) cells were found to mediate helper activity with antigen specificity identical to that of intact T cells, experiments were carried out to determine whether this functional activity was mediated by a cell-free form of TCR-related material. A disulfide-linked dimer indistinguishable from the T cell surface alpha beta heterodimer was precipitated from cell-free supernatants of cloned TH cells with F23.1, a monoclonal antibody specific for a TCR V beta 8 determinant. Moreover, when cell-free TH products were bound to and eluted from immobilized F23.1, these affinity-purified materials had antigen-specific and major histocompatibility complex-restricted helper activity that synergized with recombinant lymphokines in the generation of B cell antibody responses. These findings suggest that the factor isolated from T cell supernatants is a cell-free form of the TCR alpha beta dimer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guy, R -- Ullrich, S J -- Foo-Philips, M -- Hathcock, K S -- Appella, E -- Hodes, R J -- New York, N.Y. -- Science. 1989 Jun 23;244(4911):1477-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Experimental Immunology Branch, National Cancer Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2472009" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Antigens/*immunology ; B-Lymphocytes/immunology ; Disulfides ; Epitopes/immunology ; Hemocyanin/immunology ; Histocompatibility Antigens/immunology ; Immunoglobulin G/immunology ; Immunosorbent Techniques ; Interleukin-2/pharmacology ; Interleukin-4 ; Interleukins/pharmacology ; Lymphocyte Activation ; Macromolecular Substances ; Mice ; Molecular Weight ; Receptors, Antigen, T-Cell/*immunology/isolation & purification ; Recombinant Proteins ; Serum Albumin, Bovine/immunology ; T-Lymphocytes, Helper-Inducer/*immunology ; Trinitrobenzenes/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1989-11-24
    Description: The mature T cell receptor (TCR) repertoire is the result of selection events during T cell development. Previous assessment of TCR beta-chain selection with serologic and molecular probes demonstrated both positive and negative selection. Although this work suggested a critical role for the thymus, no direct assessment has been made of the requirement for a thymus in TCR V beta selection. A comparison of TCR V beta expression in four different congenic pairs of normal and nu/nu (athymic) mice indicated that the normal V beta deletions associated with tolerance to self minor lymphocyte stimulating (Mlsc) antigens or to self major histocompatibility complex (MHC)-encoded E alpha E beta products did not occur in most athymic mice. Thus, the thymus has a critical role in mediating self tolerance by negative selection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hodes, R J -- Sharrow, S O -- Solomon, A -- New York, N.Y. -- Science. 1989 Nov 24;246(4933):1041-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Experimental Immunology Branch, National Cancer Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2587987" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Differentiation, T-Lymphocyte/genetics ; Chromosome Deletion ; Gene Expression ; Macromolecular Substances ; Major Histocompatibility Complex ; Mice ; Mice, Inbred BALB C/immunology ; Mice, Inbred Strains/immunology ; Mice, Nude/*immunology ; Receptors, Antigen, T-Cell/*genetics ; Reference Values ; Species Specificity ; T-Lymphocytes/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1993-11-05
    Description: B7 delivers a costimulatory signal through CD28, resulting in interleukin-2 secretion and T cell proliferation. Blockade of this pathway results in T cell anergy. The in vivo role of B7 was evaluated with B7-deficient mice. These mice had a 70 percent decrease in costimulation of the response to alloantigen. Despite lacking B7 expression, activated B cells from these mice bound CTLA-4 and GL1 monoclonal antibody, demonstrating that alternative CTLA-4 ligand or ligands exist. These receptors are functionally important because the residual allogenic mixed lymphocyte responses were blocked by CTLA4Ig. Characterization of these CTLA-4 ligands should lead to strategies for manipulating the immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freeman, G J -- Borriello, F -- Hodes, R J -- Reiser, H -- Hathcock, K S -- Laszlo, G -- McKnight, A J -- Kim, J -- Du, L -- Lombard, D B -- CA 40216/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Nov 5;262(5135):907-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Hematologic Malignancies, Dana-Farber Cancer Institute, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7694362" target="_blank"〉PubMed〈/a〉
    Keywords: Abatacept ; Animals ; Antigens, CD ; Antigens, CD80/genetics/*immunology/metabolism ; Antigens, Differentiation/immunology/*metabolism ; B-Lymphocytes/*immunology ; Base Sequence ; CTLA-4 Antigen ; Cell Line ; *Immunoconjugates ; Interleukin-2/secretion ; Isoantigens/immunology ; Lymphocyte Activation ; Lymphocyte Culture Test, Mixed ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Knockout ; Molecular Sequence Data ; Mutation ; T-Lymphocytes/*immunology ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 1993-11-05
    Description: Stimulation of T cell proliferation generally requires two signals: The first signal is provided by the T cell receptor binding to antigen, and the second signal or costimulus is provided by a different receptor-ligand interaction. In mouse and human, the CD28-B7 interaction has been identified as a source of costimulatory signals. We have identified a cell surface molecule (GL1) that is distinct from B7 and abundantly expressed on activated B cells. On activated B cells GL1, rather than B7, is the predominant ligand for the T cell-activation molecule CTLA-4. GL1 provides a critical signal for T cell-dependent responses in vitro and in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hathcock, K S -- Laszlo, G -- Dickler, H B -- Bradshaw, J -- Linsley, P -- Hodes, R J -- New York, N.Y. -- Science. 1993 Nov 5;262(5135):905-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7694361" target="_blank"〉PubMed〈/a〉
    Keywords: Abatacept ; Animals ; Antibodies, Monoclonal ; Antigens, CD/metabolism ; Antigens, CD18 ; Antigens, CD80/immunology/*metabolism ; Antigens, Differentiation/*metabolism ; Antigens, Surface/immunology/*metabolism ; B-Lymphocytes/*immunology ; CHO Cells ; CTLA-4 Antigen ; Cricetinae ; *Immunoconjugates ; Interleukin-2/biosynthesis ; *Lymphocyte Activation ; Mice ; T-Lymphocytes/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 1985-05-03
    Description: A porcine class I major histocompatibility complex (SLA) gene has been introduced into the genome of a C57BL/10 mouse. This transgenic mouse expressed SLA antigen on its cell surfaces and transmitted the gene to offspring, in which the gene is also expressed. Skin grafts of such transgenic mice were rejected by normal C57BL/10 mice, suggesting that the foreign SLA antigen expressed in the transgenic mice is recognized as a functional transplantation antigen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frels, W I -- Bluestone, J A -- Hodes, R J -- Capecchi, M R -- Singer, D S -- GM 07825/GM/NIGMS NIH HHS/ -- GM 2116B/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1985 May 3;228(4699):577-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3885396" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA/genetics ; Female ; Genes ; Genetic Engineering ; Graft Rejection ; H-2 Antigens/genetics ; *Major Histocompatibility Complex ; Male ; Mice ; Mice, Inbred C57BL/genetics ; Microinjections ; Nucleic Acid Hybridization ; Skin Transplantation ; Swine
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 15 (1988), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The relationship among different minor lymphocyte stimulatory locus (Mis) determinants, Mlsa, Mlsb, Mlsc and Mlsd, remains unclear. Because of the high degree of cross-reactivity between Mlsa and Mlsd determinants, the weak stimulatory capacity of Mlsc, and the generally non-stimulatory nature of Mlsb, some investigators have recently suggested that Mis is composed of only a single expressed allele originally defined as the a andd alleles. In order to clarify the nature of Mls determinants, T cell clones positively selected for reactivity to the three stimulatory Mls determinants, Mlsa Mlsc and Mlsd, were generated and their specificities defined by extensive genetic studies. The response pattern of these Mls-specific clones as well as the results of primary mixed lymphocyte responses indicated that: (i) Mlsa and Mlsc determinants recognized by T cells are distinct, demonstrating that polymorphism does exist within the Mls system; and (ii) Mlsd is not an independent Mls type since Mlsd determinants are composed of Mlsa and Mlsc determinants and anti-Mlsd T cell responses are, in fact, the sum of anti-Mlsa and anti-Mlsc responses.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 15 (1988), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The segregation of Mlsa with respect to genes localized distally on mouse chromosome 1 was examined in two sets of recombinant inbred (RI) strains. In order to localize Mlsa, a linkage map based on analysis of both interspecific backcross mice and multiple sets of RI strains was utilized: (centromere) - Ren-1,2-10 centimorgans (cM)-At-3-8cM.-Apo-A2/Ly-17-2 cM-Spna-1-4cM.-Akp-1-(telomere). The Mlsa allele was mapped to a region that extended just centromeric of Ly-17 (one crossover in 40 RI strains) to just telomeric of Spna-1 (no crossover in 40 RI strains). The identification of multiple polymorphic loci in the region of Mlsa should allow precise gene localization and assist in efforts to clone this gene.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 15 (1988), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Although the minor lymphocyte stimulatory locus (Mls) system was originally described as a single-locus, multiple-allelic system, allelism among the genes which encode Mlsa, Mlsc and Mlsd has not been demonstrated formally. In this report, genetic linkage between genes encoding Mlsa and Mlsc was studied by testing responses of unprimed T cells, as well as Mlsa- and Mlsc-specific T cell clones, to the progeny of (AKR/J × C3H/HeJ) F1× B10.BR [(Mlsa×Mlsc)F1×Mlsb] crosses. In addition, the configuration of Mls genes expressed by CBA/J (Mlsd) was evaluated by examining the response pattern of a panel of Mlsd-specific clones to (CBA/J × B10.BR)F1× B10.BR stimulators. Results of these segregation analyses indicated that the Mls system is composed of at least two independent and unlinked genes which encode, respectively, the determinants identified as Mlsa and Mlsc.
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  • 9
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Immunology 1 (1983), S. 211-241 
    ISSN: 0732-0582
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Immunology 7 (1989), S. 683-708 
    ISSN: 0732-0582
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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