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  • 1
    Publication Date: 1986-04-04
    Description: Experiments were conducted to isolate and characterize the gene and gene product of a human hematopoietic colony-stimulating factor with pluripotent biological activities. This factor has the ability to induce differentiation of a murine myelomonocytic leukemia cell line WEHI-3B(D+) and cells from patients with newly diagnosed acute nonlymphocytic leukemia (ANLL). A complementary DNA copy of the gene encoding a pluripotent human granulocyte colony-stimulating factor (hG-CSF) was cloned and expressed in Escherichia coli. The recombinant form of hG-CSF is capable of supporting neutrophil proliferation in a CFU-GM assay. In addition, recombinant hG-CSF can support early erythroid colonies and mixed colony formation. Competitive binding studies done with 125I-labeled hG-CSF and cell samples from two patients with newly diagnosed human leukemias as well as WEHI-3B(D+) cells showed that one of the human leukemias (ANLL, classified as M4) and the WEHI-3B(D+) cells have receptors for hG-CSF. Furthermore, the murine WEHI-3B(D+) cells and human leukemic cells classified as M2, M3, and M4 were induced by recombinant hG-CSF to undergo terminal differentiation to macrophages and granulocytes. The secreted form of the protein produced by the bladder carcinoma cell line 5637 was found to be O-glycosylated and to have a molecular weight of 19,600.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Souza, L M -- Boone, T C -- Gabrilove, J -- Lai, P H -- Zsebo, K M -- Murdock, D C -- Chazin, V R -- Bruszewski, J -- Lu, H -- Chen, K K -- CA00966/CA/NCI NIH HHS/ -- CA20194/CA/NCI NIH HHS/ -- CA32516/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1986 Apr 4;232(4746):61-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2420009" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation/drug effects ; Cell Line ; Colony-Forming Units Assay ; Colony-Stimulating Factors/genetics/*pharmacology ; DNA/metabolism ; Escherichia coli/genetics ; Genes ; Granulocyte Colony-Stimulating Factor ; Granulocytes/*physiology ; Humans ; Leukemia/*pathology ; Leukemia, Myeloid/pathology ; Mice ; Plasmids ; Recombinant Proteins/*pharmacology
    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
    Publication Date: 1985-11-29
    Description: The transfer of the human gene for hypoxanthine phosphoribosyltransferase (HPRT) into human bone marrow cells was accomplished by use of a retroviral vector. The cells were infected in vitro with a replication-incompetent murine retroviral vector that carried and expressed a mutant HPRT complementary DNA. The infected cells were superinfected with a helper virus and maintained in long-term culture. The production of progeny HPRT virus by the bone marrow cells was demonstrated with a colony formation assay on cultured HPRT-deficient, ouabain-resistant murine fibroblasts. Hematopoietic progenitor cells able to form colonies of granulocytes or macrophages (or both) in semisolid medium in the presence of colony stimulating factor were present in the nonadherent cell population. Colony forming units cloned in agar and subsequently cultured in liquid medium produced progeny HPRT virus, indicating infection of this class of hematopoietic progenitor cell.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gruber, H E -- Finley, K D -- Hershberg, R M -- Katzman, S S -- Laikind, P K -- Seegmiller, J E -- Friedmann, T -- Yee, J K -- Jolly, D J -- AM 13622/AM/NIADDK NIH HHS/ -- GM 28223/GM/NIGMS NIH HHS/ -- HD20034/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1985 Nov 29;230(4729):1057-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3864246" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Gene Expression Regulation ; *Genetic Engineering ; Genetic Vectors ; Hematopoietic Stem Cells/*physiology ; Humans ; Hypoxanthine Phosphoribosyltransferase/*genetics ; Mice ; Retroviridae/*genetics ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1986-01-24
    Description: When platelets were incubated with prostacyclin, prostaglandin E1, or prostaglandin D2 at concentrations insufficient to increase the level of adenosine 3',5'-monophosphate (cyclic AMP), coagulation factor X was activated by a platelet cysteine protease. Prostacyclin or prostaglandin E1 at higher concentrations increased the cyclic AMP level and inhibited the activation of factor X by platelets. Inhibition of platelet adenylate cyclase by 2',5'-dideoxyadenosine allowed the activation of the protease at higher concentrations of the autocoids. Prostaglandins A1, A2, B1, B2, E2, F2 alpha, 6-keto-prostaglandin F1 alpha, and thromboxane B2, which do not affect platelet cyclic AMP level, did not stimulate the protease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dutta-Roy, A K -- Ray, T K -- Sinha, A K -- New York, N.Y. -- Science. 1986 Jan 24;231(4736):385-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3001935" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/metabolism ; Alprostadil/pharmacology ; Animals ; Blood Platelets/*drug effects/metabolism/physiology ; Cattle ; Cyclic AMP/metabolism ; Deoxyadenosines/analogs & derivatives/pharmacology ; *Dideoxyadenosine/*analogs & derivatives ; Epoprostenol/*pharmacology ; Factor X/*physiology ; Humans ; Peptide Hydrolases/metabolism ; Prostaglandin D2 ; Prostaglandins/pharmacology ; Prostaglandins D/pharmacology
    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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  • 4
    Publication Date: 1988-01-29
    Description: Soluble products of either Epstein-Barr virus (EBV)-infected B cells or activated monocytes promote the proliferation of EBV-infected B cells and permit their growth at low cell densities. This suggests that growth factors are important for B-cell immortalization by EBV. In this study, a monocyte-derived factor that promotes the growth of EBV-infected b cells was purified and identified as interferon-beta 2 (IFN-beta 2), which is also known as 26-kilodalton protein, B-cell differentiation factor (BSF-2), and interleukin-6 (IL-6). The purified protein has a specific activity of approximately 4 X 10(7) units per milligram of protein in assays of B-cell growth. Thus, IFN-beta 2/BSF-2 is a B-cell growth factor that promotes the proliferation of human B cells infected with EBV.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tosato, G -- Seamon, K B -- Goldman, N D -- Sehgal, P B -- May, L T -- Washington, G C -- Jones, K D -- Pike, S E -- AI-16262/AI/NIAID NIH HHS/ -- CA-44365/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1988 Jan 29;239(4839):502-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biochemistry and Biophysics, Food and Drug Administration, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2829354" target="_blank"〉PubMed〈/a〉
    Keywords: B-Lymphocytes/*cytology/microbiology ; Cell Count ; Cell Division ; Cells, Cultured ; Electrophoresis, Polyacrylamide Gel ; Herpesvirus 4, Human/*physiology ; Humans ; Immunoassay ; Interleukin-6 ; Interleukins/isolation & purification/*pharmacology ; Monocytes/*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
    Publication Date: 1988-12-23
    Description: The ras p21 GTPase-activating protein (GAP) was purified from human placental tissue. Internal amino acid sequence was obtained from this 120,000-dalton protein and, by means of this sequence, two types of complementary DNA clones were isolated and characterized. One type encoded GAP with a predicted molecular mass of 116,000 daltons and 96% identity with bovine GAP. The messenger RNA of this GAP was detected in human lung, brain, liver, leukocytes, and placenta. The second type appeared to be generated by a differential splicing mechanism and encoded a novel form of GAP with a predicted molecular mass of 100,400 daltons. This protein lacks the hydrophobic amino terminus characteristic of the larger species, but retains GAP activity. The messenger RNA of this type was abundantly expressed in placenta and in several human cell lines, but not in adult tissues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Trahey, M -- Wong, G -- Halenbeck, R -- Rubinfeld, B -- Martin, G A -- Ladner, M -- Long, C M -- Crosier, W J -- Watt, K -- Koths, K -- New York, N.Y. -- Science. 1988 Dec 23;242(4886):1697-700.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Cetus Corp., Emeryville, CA 94608.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3201259" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Brain Chemistry ; *Cloning, Molecular ; DNA/*genetics/isolation & purification ; Female ; GTPase-Activating Proteins ; Gene Expression Regulation ; Humans ; Leukocytes/analysis ; Liver/analysis ; Lung/analysis ; Molecular Sequence Data ; Molecular Weight ; Nucleic Acid Hybridization ; Oligonucleotide Probes ; Placenta/*analysis ; Pregnancy ; Proteins/*genetics/isolation & purification ; RNA, Messenger/analysis/genetics ; Sequence Homology, Nucleic Acid ; ras GTPase-Activating Proteins
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  • 6
    Publication Date: 1989-12-08
    Description: The fragile X syndrome is the most common cause of familial mental retardation. Genetic counseling and gene isolation are hampered by a lack of DNA markers close to the disease locus. Two somatic cell hybrids that each contain a human X chromosome with a breakpoint close to the fragile X locus have been characterized. A new DNA marker (DXS296) lies between the chromosome breakpoints and is the closest marker to the fragile X locus yet reported. The Hunter syndrome gene, which causes iduronate sulfatase deficiency, is located at the X chromosome breakpoint that is distal to this new marker, thus localizing the Hunter gene distal to the fragile X locus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suthers, G K -- Callen, D F -- Hyland, V J -- Kozman, H M -- Baker, E -- Eyre, H -- Harper, P S -- Roberts, S H -- Hors-Cayla, M C -- Davies, K E -- New York, N.Y. -- Science. 1989 Dec 8;246(4935):1298-300.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Histopathology, Adelaide Children's Hospital, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2573953" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Mapping ; Female ; Fragile X Syndrome/*genetics ; Genetic Counseling ; *Genetic Linkage ; *Genetic Markers ; Genomic Library ; Humans ; Hybrid Cells ; Likelihood Functions ; Mice ; Mucopolysaccharidosis II/genetics ; Mutation ; Nucleic Acid Hybridization ; Polymorphism, Restriction Fragment Length ; Sex Chromosome Aberrations/*genetics ; Translocation, Genetic
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  • 7
    Publication Date: 1989-08-11
    Description: Cholesterol balance in mammalian cells is maintained in part by sterol-mediated repression of gene transcription for the low density lipoprotein receptor and enzymes in the cholesterol biosynthetic pathway. A promoter sequence termed the sterol regulatory element (SRE) is essential for this repression. With the use of an oligonucleotide containing the SRE to screen a human hepatoma complementary DNA expression library, a clone for a DNA binding protein was isolated that binds to the conserved SRE octanucleotide in both a sequence-specific and a single-strand--specific manner. This protein contains seven highly conserved zinc finger repeats that exhibit striking sequence similarity to retroviral nucleic acid binding proteins (NBPs). We have designated the protein "cellular NBP" (CNBP). CNBP is expressed in a wide variety of tissues, is up regulated by sterols, and exhibits binding specificity that correlates with in vivo function. These properties are consistent with a role in sterol-mediated control of transcription.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rajavashisth, T B -- Taylor, A K -- Andalibi, A -- Svenson, K L -- Lusis, A J -- HL30568/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1989 Aug 11;245(4918):640-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of California, Los Angeles 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2562787" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Binding Sites ; Carcinoma, Hepatocellular/metabolism ; Cholesterol/biosynthesis ; DNA/*metabolism ; DNA Probes ; DNA-Binding Proteins/genetics/*metabolism ; Gene Expression Regulation/*drug effects ; Humans ; Hydroxymethylglutaryl CoA Reductases/genetics ; Liver Neoplasms/metabolism ; Metalloproteins/genetics/*metabolism ; Molecular Sequence Data ; Promoter Regions, Genetic ; *RNA-Binding Proteins ; Receptors, LDL/genetics ; *Regulatory Sequences, Nucleic Acid ; Sequence Homology, Nucleic Acid ; Sterols/*pharmacology ; Tumor Cells, Cultured
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  • 8
    Publication Date: 1989-12-08
    Description: The human retinoblastoma gene (RB1) encodes a protein (Rb) of 105 kilodaltons that can be phosphorylated. Analysis of Rb metabolism has shown that the protein has a half-life of more than 10 hours and is synthesized at all phases of the cell cycle. Newly synthesized Rb is not extensively phosphorylated (it is "underphosphorylated") in cells in the G0 and G1 phases but is phosphorylated at multiple sites at the G1/S boundary and in S phase. HL-60 cells that were induced to terminally differentiate by various chemicals lost their ability to phosphorylate newly synthesized Rb at multiple sites when cell growth was arrested. These findings suggest that underphosphorylated Rb may restrict cell proliferation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mihara, K -- Cao, X R -- Yen, A -- Chandler, S -- Driscoll, B -- Murphree, A L -- T'Ang, A -- Fung, Y K -- 5P30CA14089/CA/NCI NIH HHS/ -- CA 44754/CA/NCI NIH HHS/ -- EY 07846/EY/NEI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1989 Dec 8;246(4935):1300-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Hematology/Oncology and Ophthalmology, Childrens Hospital of Los Angeles, CA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2588006" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Cycle/*genetics ; Cell Division/drug effects/genetics ; Eye Neoplasms/genetics ; *Gene Expression Regulation, Neoplastic ; Humans ; Interphase/genetics ; Neoplasm Proteins/genetics/*metabolism ; Phosphorylation ; Protein Processing, Post-Translational/drug effects/*genetics ; Retinoblastoma/*genetics ; Tretinoin/pharmacology ; Tumor Cells, Cultured
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  • 9
    Publication Date: 1989-10-13
    Description: Interleukin-1 (IL-1) is a major regulator of inflammation and immunity. IL-1 induces T lymphocyte growth by acting as a second signal (together with antigen) in enhancing the production of interleukin-2 (IL-2). An IL-1-responsive element in the promoter region of the human IL-2 gene was similar to the binding site for the transcription factor AP-1. IL-1 enhanced expression of c-jun messenger RNA, whereas the antigenic signal enhanced messenger RNA expression of c-fos. Thus, the two components of the AP-1 factor are independently regulated and the AP-1 factor may serve as a nuclear mediator for the many actions of IL-1 on cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Muegge, K -- Williams, T M -- Kant, J -- Karin, M -- Chiu, R -- Schmidt, A -- Siebenlist, U -- Young, H A -- Durum, S K -- 5-T32-CA-09140/CA/NCI NIH HHS/ -- AI-R01-23879/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1989 Oct 13;246(4927):249-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunoregulation, Program Resources Inc., Frederick, MD 21701.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2799385" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chloramphenicol O-Acetyltransferase/genetics ; Gene Expression Regulation ; Humans ; Interleukin-1/*physiology ; Interleukin-2/*genetics ; Mice ; Promoter Regions, Genetic/genetics ; Proto-Oncogene Proteins c-jun/*genetics ; Tetradecanoylphorbol Acetate/pharmacology ; Transfection ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
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  • 10
    Publication Date: 1989-10-13
    Description: Cellular metabolism is affected by many factors in a cell's environment. Given a sufficiently sensitive method for measuring cellular metabolic rates, it should be possible to detect a wide variety of chemical and physical stimuli. A biosensor has been constructed in which living cells are confined to a flow chamber in which a potentiometric sensor continually measures the rate of production of acidic metabolites. Exploratory studies demonstrate several applications of the device in basic science and technology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parce, J W -- Owicki, J C -- Kercso, K M -- Sigal, G B -- Wada, H G -- Muir, V C -- Bousse, L J -- Ross, K L -- Sikic, B I -- McConnell, H M -- R01-CA-4217/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1989 Oct 13;246(4927):243-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Devices Corporation, Menlo Park, CA 94025.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2799384" target="_blank"〉PubMed〈/a〉
    Keywords: *Biosensing Techniques ; Carbonyl Cyanide m-Chlorophenyl Hydrazone/pharmacology ; Cells/*metabolism ; Cells, Cultured/drug effects/metabolism ; Epidermal Growth Factor/pharmacology ; Flow Cytometry ; Humans ; Oxygen Consumption ; Silicon
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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