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  • 1
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    Stat3: a STAT family member activated by tyrosine phosphorylation in response to epidermal growth factor and interleukin-6 (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-04-01
    Description: The STAT family of proteins carries out a dual function: signal transduction and activation of transcription. A new family member, Stat3, becomes activated through phosphorylation on tyrosine as a DNA binding protein in response to epidermal growth factor (EGF) and interleukin-6 (IL-6) but not interferon gamma (IFN-gamma). It is likely that this phosphoprotein forms homodimers as well as heterodimers with the first described member of the STAT family, Stat91 (renamed Stat1 alpha), which is activated by the IFNs and EGF. Differential activation of different STAT proteins in response to different ligands should help to explain specificity in nuclear signaling from the cell surface.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhong, Z -- Wen, Z -- Darnell, J E Jr -- AI32489/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1994 Apr 1;264(5155):95-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Cell Biology, Rockefeller University, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8140422" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; DNA/metabolism ; DNA-Binding Proteins/chemistry/genetics/isolation & purification/*metabolism ; Epidermal Growth Factor/*pharmacology ; Humans ; Interferon-gamma ; Interleukin-6/*pharmacology ; Mice ; Molecular Sequence Data ; Phosphorylation ; Regulatory Sequences, Nucleic Acid ; STAT1 Transcription Factor ; STAT3 Transcription Factor ; Sequence Alignment ; Trans-Activators/metabolism ; Transfection ; Tumor Cells, Cultured ; Tyrosine/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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  • 2
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    Requirement of ets-2 expression for Xenopus oocyte maturation (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-12-07
    Description: A molecular clone of the Xenopus laevis ets-2 gene was isolated from an oocyte complementary DNA library. The amount of messenger RNA (mRNA) in each oocyte or embryo was almost constant during oogenesis and was maintained until the blastula stage of embryonic development, indicating that the observed 3.2-kilobase transcript is a maternal message. The only normal adult tissue in which ets-2 mRNA was detected was the ovary. Injection of antisense oligonucleotides homologous to the ets-2 sequence into oocytes led to degradation of the mRNA and blocked hormone-induced germinal vesicle breakdown. The ets-2 product is thus required for the meiotic maturation of Xenopus oocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Z Q -- Burdett, L A -- Seth, A K -- Lautenberger, J A -- Papas, T S -- New York, N.Y. -- Science. 1990 Dec 7;250(4986):1416-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Oncology, National Cancer Institute, Frederick, MD 21702.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2255913" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Division ; *DNA-Binding Proteins ; Embryo, Nonmammalian/physiology ; Female ; Gene Expression ; Gene Library ; Oligonucleotides, Antisense/pharmacology ; Oocytes/cytology/drug effects/*physiology ; Oogenesis ; Protein-Tyrosine Kinases/genetics ; Proto-Oncogene Protein c-ets-2 ; Proto-Oncogene Proteins/*genetics ; *Proto-Oncogenes ; RNA, Messenger/analysis/genetics ; *Repressor Proteins ; *Trans-Activators ; *Transcription Factors ; Transcription, Genetic ; Xenopus laevis
    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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    D1 and D2 dopamine receptor-regulated gene expression of striatonigral and striatopallidal neurons (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-12-07
    Description: The striatum, which is the major component of the basal ganglia in the brain, is regulated in part by dopaminergic input from the substantia nigra. Severe movement disorders result from the loss of striatal dopamine in patients with Parkinson's disease. Rats with lesions of the nigrostriatal dopamine pathway caused by 6-hydroxydopamine (6-OHDA) serve as a model for Parkinson's disease and show alterations in gene expression in the two major output systems of the striatum to the globus pallidus and substantia nigra. Striatopallidal neurons show a 6-OHDA-induced elevation in their specific expression of messenger RNAs (mRNAs) encoding the D2 dopamine receptor and enkephalin, which is reversed by subsequent continuous treatment with the D2 agonist quinpirole. Conversely, striatonigral neurons show a 6-OHDA-induced reduction in their specific expression of mRNAs encoding the D1 dopamine receptor and substance P, which is reversed by subsequent daily injections of the D1 agonist SKF-38393. This treatment also increases dynorphin mRNA in striatonigral neurons. Thus, the differential effects of dopamine on striatonigral and striatopallidal neurons are mediated by their specific expression of D1 and D2 dopamine receptor subtypes, respectively.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gerfen, C R -- Engber, T M -- Mahan, L C -- Susel, Z -- Chase, T N -- Monsma, F J Jr -- Sibley, D R -- New York, N.Y. -- Science. 1990 Dec 7;250(4986):1429-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cell Biology, National Institute of Mental Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2147780" target="_blank"〉PubMed〈/a〉
    Keywords: 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine/pharmacology ; Animals ; Cerebral Cortex/physiology ; Corpus Striatum/drug effects/*metabolism ; Ergolines/pharmacology ; Gene Expression Regulation ; Globus Pallidus/drug effects/*metabolism ; Hydroxydopamines/pharmacology ; Models, Neurological ; Neurons/drug effects/*metabolism ; Oligonucleotide Probes ; Oxidopamine ; Quinpirole ; RNA, Messenger/drug effects/*genetics ; Rats ; Receptors, Dopamine/*genetics ; Receptors, Dopamine D1 ; Receptors, Dopamine D2 ; Substantia Nigra/drug effects/*metabolism ; Thalamus/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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  • 4
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    Fibroblast growth factor receptor is a portal of cellular entry for herpes simplex virus type 1 (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-06-15
    Description: Herpes simplex virus type 1 (HSV-1) is a ubiquitous pathogen responsible for considerable morbidity in the general population. The results presented herein establish the basic fibroblast growth factor (FGF) receptor as a means of entry of HSV-1 into vertebrate cells. Inhibitors of basic FGF binding to its receptor and competitive polypeptide antagonists of basic FGF prevented HSV-1 uptake. Chinese hamster ovary (CHO) cells that do not express FGF receptors are resistant to HSV-1 entry; however, HSV-1 uptake is dramatically increased in CHO cells transfected with a complementary DNA encoding a basic FGF receptor. The distribution of this integral membrane protein in vivo may explain the tissue and cell tropism of HSV-1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaner, R J -- Baird, A -- Mansukhani, A -- Basilico, C -- Summers, B D -- Florkiewicz, R Z -- Hajjar, D P -- P01 DK 18811/DK/NIDDK NIH HHS/ -- P01 HD 96601/HD/NICHD NIH HHS/ -- P50 HL 18828/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1990 Jun 15;248(4961):1410-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2162560" target="_blank"〉PubMed〈/a〉
    Keywords: Adsorption ; Amino Acid Sequence ; Animals ; Binding, Competitive ; Cell Line ; Cell Membrane/microbiology ; Cricetinae ; DNA/genetics ; Fibroblast Growth Factors/antagonists & inhibitors/metabolism/pharmacology ; Heparitin Sulfate/metabolism ; Molecular Sequence Data ; Peptide Fragments/pharmacology ; Receptors, Cell Surface/genetics/*physiology ; Receptors, Fibroblast Growth Factor ; Simplexvirus/*physiology ; Transfection
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Density-dependent natural selection and trade-offs in life history traits (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-26
    Description: Theories of density-dependent natural selection state that at extreme population densities evolution produces alternative life histories due to trade-offs. The trade-offs are presumed to arise because those genotypes with highest fitness at high population densities will not also have high fitness at low density and vice-versa. These predictions were tested by taking samples from six populations of Drosophila melanogaster kept at low population densities (r-populations) for nearly 200 generations and placing them in crowded cultures (K-populations). After 25 generations in the crowded cultures, the derived K-populations showed growth rate and productivity that at high densities were elevated relative to the controls, but at low density were depressed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mueller, L D -- Guo, P Z -- Ayala, F J -- S07 RR07008/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1991 Jul 26;253(5018):433-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, University of California, Irvine 92717.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1907401" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Crosses, Genetic ; Drosophila melanogaster/*genetics/growth & development/physiology ; Ecology ; Female ; Genetic Variation ; Male ; Models, Genetic ; Population Growth ; *Selection, Genetic
    Print ISSN: 0036-8075
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  • 6
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    Human and Drosophila homeodomain proteins that enhance the DNA-binding activity of serum response factor (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-08-21
    Description: Cells with distinct developmental histories can respond differentially to identical signals, suggesting that signals are interpreted in a fashion that reflects a cell's identity. How this might occur is suggested by the observation that proteins of the homeodomain family, including a newly identified human protein, enhance the DNA-binding activity of serum response factor, a protein required for the induction of genes by growth and differentiation factors. Interaction with proteins of the serum response factor family may allow homeodomain proteins to specify the transcriptional response to inductive signals. Moreover, because the ability to enhance the binding of serum response factor to DNA residues within the homeodomain but is independent of homeodomain DNA-binding activity, this additional activity of the homeodomain may account for some of specificity of action of homeodomain proteins in development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grueneberg, D A -- Natesan, S -- Alexandre, C -- Gilman, M Z -- CA08968/CA/NCI NIH HHS/ -- CA45642/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1992 Aug 21;257(5073):1089-95.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, NY 11724.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1509260" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Binding Sites ; DNA/genetics/*metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism/*pharmacology ; Drosophila/genetics ; *Drosophila Proteins ; Fungal Proteins/chemistry/pharmacology ; *Homeodomain Proteins ; Humans ; Minichromosome Maintenance 1 Protein ; Molecular Sequence Data ; Nuclear Proteins/*metabolism ; Saccharomyces cerevisiae/genetics ; Serum Response Factor ; Transcription Factors/chemistry/*metabolism/pharmacology ; Transfection
    Print ISSN: 0036-8075
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  • 7
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    High-frequency network oscillation in the hippocampus (1992)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1992-05-15
    Description: Pyramidal cells in the CA1 hippocampal region displayed transient network oscillations (200 hertz) during behavioral immobility, consummatory behaviors, and slow-wave sleep. Simultaneous, multisite recordings revealed temporal and spatial coherence of neuronal activity during population oscillations. Participating pyramidal cells discharged at a rate lower than the frequency of the population oscillation, and their action potentials were phase locked to the negative phase of the simultaneously recorded oscillatory field potentials. In contrast, interneurons discharged at population frequency during the field oscillations. Thus, synchronous output of cooperating CA1 pyramidal cells may serve to induce synaptic enhancement in target structures of the hippocampus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buzsaki, G -- Horvath, Z -- Urioste, R -- Hetke, J -- Wise, K -- NS02383/NS/NINDS NIH HHS/ -- NS27058/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1992 May 15;256(5059):1025-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ 07102.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1589772" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Behavior, Animal/physiology ; Cell Membrane/physiology ; Electrophysiology ; Hippocampus/*physiology ; Interneurons/physiology ; Male ; Neurons/physiology ; Periodicity ; Pyramidal Tracts/physiology ; Rats ; Sleep/physiology ; Synapses/physiology
    Print ISSN: 0036-8075
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  • 8
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    A model for the adjustment of the mitotic clock by cyclin and MPF levels (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-01
    Description: A mathematical model of cell cycle progression is presented, which integrates recent biochemical information on the interaction of the maturation promotion factor (MPF) and cyclin. The model retrieves the dynamics observed in early embryos and explains how multiple cycles of MPF activity can be produced and how the internal clock that determines durations and number of cycles can be adjusted by modulating the rate of change in MPF or cyclin concentrations. Experiments are suggested for verifying the role of MPF activity in determining the length of the somatic cell cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norel, R -- Agur, Z -- New York, N.Y. -- Science. 1991 Mar 1;251(4997):1076-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Applied Mathematics and Computer Science, Weizmann Institute of Science, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1825521" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Cycle ; Cell Survival ; Cyclins/*physiology ; Maturation-Promoting Factor/*physiology ; Mitosis ; Models, Theoretical ; Periodicity
    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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    Engraftment and development of human T and B cells in mice after bone marrow transplantation (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-04-19
    Description: A model for human lymphocyte ontogeny has been developed in a normal mouse. Human bone marrow, depleted of mature T and B lymphocytes, and bone marrow from mice with severe combined immunodeficiency were transplanted into lethally irradiated BALB/c mice. Human B and T cells were first detected 2 to 4 months after transplantation and persisted for at least 6 months. Most human thymocytes (30 to 50 percent of total thymocytes) were CD3+CD4+CD8+. Human immunoglobulin was detected in some chimeras, and a human antibody response to dinitrophenol could be generated after primary and secondary immunization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lubin, I -- Faktorowich, Y -- Lapidot, T -- Gan, Y -- Eshhar, Z -- Gazit, E -- Levite, M -- Reisner, Y -- New York, N.Y. -- Science. 1991 Apr 19;252(5004):427-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biophysics, Weizmann Institute of Science, Rehovot, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1826797" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/analysis ; Antibodies, Monoclonal/immunology ; Antigens, CD3 ; Antigens, Differentiation, T-Lymphocyte/immunology ; B-Lymphocytes/*cytology/immunology ; *Bone Marrow Cells ; *Bone Marrow Transplantation ; Cell Differentiation ; Chimera ; Hematopoietic Stem Cells/cytology ; Hemocyanin/immunology ; Humans ; Immunization ; Immunoglobulins/analysis ; Immunologic Deficiency Syndromes ; Immunophenotyping ; Mice ; Mice, Inbred BALB C ; Receptors, Antigen, T-Cell/immunology ; T-Lymphocytes/*cytology/immunology ; *Transplantation, Heterologous
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  • 10
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    Brain tumor treatment: significant contributions (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-12-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blaese, R M -- Culver, K W -- Ishii, H -- Oldfield, E H -- Ram, Z -- Wallbridge, S -- New York, N.Y. -- Science. 1992 Dec 18;258(5090):1960.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1470923" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Neoplasms/*therapy ; *Genetic Therapy ; Glioma ; Mice ; Retroviridae/genetics ; Thymidine Kinase/genetics ; Transfection ; Tumor Cells, Cultured ; beta-Galactosidase/genetics/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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