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  • 1
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    Reconstruction of an immune system (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yancopoulos, G D -- Alt, F W -- New York, N.Y. -- Science. 1988 Sep 23;241(4873):1581-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Columbia University, New York, NY 10032.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3262236" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/physiology ; *Chimera ; Immune System/cytology/*physiology/surgery ; Immune Tolerance ; Immunoglobulin Variable Region/genetics ; Immunologic Deficiency Syndromes/etiology/genetics ; Lymphoid Tissue/transplantation ; Mice ; Mice, Mutant Strains/*immunology ; *Models, Biological ; T-Lymphocytes/physiology ; Transplantation, Heterologous
    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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    Multiple circadian oscillators regulate the timing of behavioral and endocrine rhythms in female golden hamsters (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-17
    Description: A single daily "surge" in pituitary luteinizing hormone release was observed in ovariectomized-estrogen-treated hamsters expressing an intact circadian rhythm of locomotor activity. In contrast, two luteinizing hormone surges occurred within a single 24-hour period in hamsters whose activity rhythm had dissociated or "split" into two distinct components. These observations indicate that both behavioral and endocrine circadian rhythms are regulated by the same multioscillator system, which seems to be composed of at least two distinct circadian oscillators.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Swann, J M -- Turek, F W -- HD-07068/HD/NICHD NIH HHS/ -- HD-09885/HD/NICHD NIH HHS/ -- K04 HD-00249/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1985 May 17;228(4701):898-900.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4001926" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Castration ; *Circadian Rhythm ; Cricetinae ; Estradiol/pharmacology ; Female ; Luteinizing Hormone/blood/*secretion ; Mesocricetus ; Motor Activity/*physiology
    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
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    Development of the primary antibody repertoire (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-11-20
    Description: The ability to generate a diverse immune response depends on the somatic assembly of genes that encode the antigen-binding portions of immunoglobulin molecules. In this article, we discuss the mechanism and control of these genomic rearrangement events and how aspects of this process are involved in generating the primary antibody repertoire.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alt, F W -- Blackwell, T K -- Yancopoulos, G D -- AI-20047/AI/NIAID NIH HHS/ -- CA-40427/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1987 Nov 20;238(4830):1079-87.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, College of Physicians and Surgeons of Columbia University, New York, NY 10032.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3317825" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/*genetics ; *Antibody Diversity ; B-Lymphocytes/*physiology ; Gene Expression Regulation ; *Genes, Immunoglobulin ; Humans ; Immunoglobulin Variable Region/*genetics
    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
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    Regulation of expression of the interleukin-2 receptor on hematopoietic cells by interleukin-3 (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-07-25
    Description: Remarkable similarities in the intracellular and genetic events occur when lymphoid and hematopoietic cells are exposed to their specific growth factors. The interleukin-2 (IL-2) receptor, whose cell-surface expression is an absolute requirement for the growth and differentiation of lymphoid cells, was detected on various nonlymphoid hematopoietic cell types in this study. Cell lines consisting either of granulocyte-macrophage precursors or mast cells, which are dependent on interleukin-3 (IL-3) for their growth, expressed high levels of the IL-2 receptor on their surface. Analysis of the binding characteristics of these receptors with 125I-labeled recombinant IL-2 revealed that only receptors with low affinity for IL-2 were present on these cells. Addition of purified recombinant IL-3 to these cell lines led to an increase in IL-2 receptor gene expression within 1 hour in isolated nuclei. This IL-3--induced increase in the number of IL-2 receptors on the cell surface is maximal within 24 hours. Addition of 10,000 units of IL-2 to these cells had no apparent effect on their growth or differentiation. The presence of the receptor with only low affinity for IL-2 on hematopoietic cells and the regulation by IL-3 suggest that this receptor is involved in some important metabolic event in hematopoiesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Birchenall-Sparks, M C -- Farrar, W L -- Rennick, D -- Kilian, P L -- Ruscetti, F W -- New York, N.Y. -- Science. 1986 Jul 25;233(4762):455-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3088729" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Hematopoiesis/drug effects ; Hematopoietic Stem Cells/*drug effects/metabolism ; Humans ; Interleukin-2/pharmacology ; Interleukin-3 ; Lymphokines/*pharmacology ; Macrophages/drug effects/metabolism ; Mice ; Receptors, Immunologic/*biosynthesis/drug effects/genetics ; Receptors, Interleukin-2 ; T-Lymphocytes, Cytotoxic/drug effects/metabolism
    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
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    High-level recombinant gene expression in rabbit endothelial cells transduced by retroviral vectors (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-01-13
    Description: By virtue of its immediate contact with the circulating blood, the endothelium provides an attractive target for retroviral vector transduction for the purpose of gene therapy. To see whether efficient gene transfer and expression was feasible, rabbit aortic endothelial cells were infected with three Moloney murine leukemia virus-derived retroviral vectors. Two of these vectors carry genes encoding products that are not secreted: N2, containing only the selectable marker gene neoR, and SAX, containing both neoR gene and an SV40-promoted adenosine deaminase (ADA) gene. The third vector, G2N, contains a secretory rat growth hormone (rGH) gene and an SV40-promoted neoR gene. Infection with all three vectors resulted in expression of the respective genes. A high level of human ADA expression was observed in infected endothelial cell populations both before and after selection in G418. G2N-infected rabbit aortic endothelial cells that were grown on a synthetic vascular graft continued to secrete rGH into the culture medium. These studies suggest that endothelial cells may serve as vehicles for the introduction in vivo of functioning recombinant genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zwiebel, J A -- Freeman, S M -- Kantoff, P W -- Cornetta, K -- Ryan, U S -- Anderson, W F -- HL21568/HL/NHLBI NIH HHS/ -- HL33064/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1989 Jan 13;243(4888):220-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Hematology, National Heart, Lung, and Blood Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2911735" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Deaminase/analysis/genetics ; Animals ; Aorta ; DNA, Recombinant/metabolism ; Endothelium, Vascular/*metabolism ; *Genes ; *Genes, Viral ; Genetic Markers/analysis ; *Genetic Vectors ; Growth Hormone/analysis/genetics ; Moloney murine leukemia virus/*genetics ; Promoter Regions, Genetic ; Rabbits ; Rats ; Recombinant Proteins/analysis ; *Transduction, Genetic ; *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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  • 6
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    Site-directed neovessel formation in vivo (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-09
    Description: Angiogenesis is an important component of organogenesis and wound repair and occurs during the pathology of oncogenesis, atherogenesis, and other disease processes. Thus, it is important to understand the physiological mechanisms that control neovascularization, especially with methods that permit the molecular dissection of the phenomenon in vivo. Heparin-binding growth factor-1 was shown to bind to collagen type I and type IV. When complexed with gelatin, heparin-binding growth factor-1 can induce neovascularization at polypeptide concentrations that are consistent with the biological activity of the mitogen in vitro. The adsorption strategy induces rapid blood vessel formation at and between organ- and tissue-specific sites and permits recovery of the site-specific implant for examination and manipulation by molecular methods.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thompson, J A -- Anderson, K D -- DiPietro, J M -- Zwiebel, J A -- Zametta, M -- Anderson, W F -- Maciag, T -- HL32348/HL/NHLBI NIH HHS/ -- HL35627/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1988 Sep 9;241(4871):1349-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Hematology, National Heart, Lung and Blood Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2457952" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Vessels/cytology ; Collagen/metabolism ; Extracellular Matrix ; Fibroblast Growth Factor 1 ; Gelatin/metabolism ; Growth Substances/*pharmacology ; Heparin/*pharmacology ; *Neovascularization, Pathologic ; Rats ; Tampons, Surgical
    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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  • 7
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    Biochemistry of information storage in the nervous system (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-06-05
    Description: The use of molecular biological approaches has defined new mechanisms that store information in the mammalian nervous system. Environmental stimuli alter steady-state levels of messenger RNA species encoding neurotransmitters, thereby altering synaptic, neuronal, and network function over time. External or internal stimuli alter impulse activity, which alters membrane depolarization and selectively changes the expression of specific transmitter genes. These processes occur in diverse peripheral and central neurons, suggesting that information storage is widespread in the neuraxis. The temporal profile of any particular molecular mnemonic process is determined by specific kinetics of turnover and by the geometry of the neuron resulting in axonal transport of molecules to different synaptic arrays at different times. Generally, transmitters, the agents of millisecond-to-millisecond communication, are subject to relatively long-lasting changes in expression, ensuring that ongoing physiological function is translated into information storage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Black, I B -- Adler, J E -- Dreyfus, C F -- Friedman, W F -- LaGamma, E F -- Roach, A H -- HD 12108/HD/NICHD NIH HHS/ -- NS 10259/NS/NINDS NIH HHS/ -- NS 20788/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1987 Jun 5;236(4806):1263-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2884727" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Medulla/metabolism ; Animals ; Brain/physiology ; Memory/*physiology ; Nervous System/anatomy & histology/metabolism ; *Nervous System Physiological Phenomena ; Neurons/physiology ; Neurotransmitter Agents/metabolism/*physiology ; Sympathetic Nervous System/metabolism/physiology ; Transcription, Genetic
    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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  • 8
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    Perivascular microglial cells of the CNS are bone marrow-derived and present antigen in vivo (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-01-15
    Description: A crucial question in the study of immunological reactions in the central nervous system (CNS) concerns the identity of the parenchymal cells that function as the antigen-presenting cells in that organ. Rat bone marrow chimeras and encephalitogenic, major histocompatability--restricted T-helper lymphocytes were used to show that a subset of endogenous CNS cells, commonly termed "perivascular microglial cells," is bone marrow-derived. In addition, these perivascular cells are fully competent to present antigen to lymphocytes in an appropriately restricted manner. These findings are important for bone marrow transplantation and for neuroimmunological diseases such as multiple sclerosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hickey, W F -- Kimura, H -- KO7-NS0087/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1988 Jan 15;239(4837):290-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104-6079.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3276004" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Presenting Cells/*immunology ; Astrocytes/immunology ; Bone Marrow/*immunology ; Bone Marrow Transplantation ; Central Nervous System/blood supply/*immunology/pathology ; Chimera ; Encephalomyelitis, Autoimmune, Experimental/immunology/pathology ; Endothelium/immunology ; Graft vs Host Disease/immunology ; Histocompatibility Antigens/analysis/immunology ; Immunohistochemistry ; Multiple Sclerosis/immunology/pathology ; Neuroglia/*immunology ; Rats ; Rats, Inbred Lew ; 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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  • 9
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    A neuroendocrine marker in tissues of the immune system (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-10-04
    Description: Antibodies to chromogranin, a secretory protein marker for the diffuse neuroendocrine system, were used to analyze rat lymphoreticular tissues by means of immunochemistry and immunohistochemistry. Chromogranin-positive cells were present in spleen, lymph node, thymus, and fetal liver. When these organs were gently dispersed and separated on a Ficoll gradient, the chromogranin-immunoreactive cells became enriched in the dense red-cell pellets. The unexpected distribution of these neuroendocrine cells in all immunologically relevant structures suggests that they may link the nervous and immunological systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Angeletti, R H -- Hickey, W F -- K07-NS00889/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1985 Oct 4;230(4721):89-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3898368" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Chromogranins/*analysis ; Electrophoresis, Polyacrylamide Gel ; Histocytochemistry ; Immunosorbent Techniques ; Lymphoid Tissue/*analysis ; Mononuclear Phagocyte System/*analysis ; Nerve Tissue Proteins/*analysis ; Rats
    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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  • 10
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    Gene expression in mice after high efficiency retroviral-mediated gene transfer (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-12-20
    Description: A retroviral expression vector (N2) containing the selectable gene, neoR, has been used to determine the optimal conditions for infecting murine hematopoietic progenitor cells at high efficiency. After infected bone marrow cells were introduced into lethally irradiated mice, the presence, stability, and expression of the vector DNA sequences were analyzed either in individual spleen foci 10 days later or in the blood, bone marrow, and spleens of mice 4 months later. When bone marrow cells were cultured in medium containing virus with titers of more than 10(6) colony-forming units per milliliter in the presence of purified murine interleukin-3, more than 85 percent of the resulting foci contained vector DNA. This proviral vector DNA was intact. Efficient expression of the neoR gene was demonstrated in most of the DNA-positive foci examined. The spleens of reconstituted animals (over a long term) contained intact "vector DNA" and the blood and bone marrow expressed the neoR gene in some animals. Thus, a retroviral vector can be used to introduce intact exogenous DNA sequences into hematopoietic stem cells with high efficiency and with substantial expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eglitis, M A -- Kantoff, P -- Gilboa, E -- Anderson, W F -- New York, N.Y. -- Science. 1985 Dec 20;230(4732):1395-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2999985" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Bone Marrow/microbiology ; Cells, Cultured ; DNA Transposable Elements ; DNA, Viral/genetics ; *Genes, Viral ; *Genetic Vectors ; Mice ; Moloney murine leukemia virus/*genetics ; Spleen/microbiology ; *Transcription, Genetic
    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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