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  • Kinetics
  • Pregnancy
  • 2000-2004  (49)
  • 1980-1984  (83)
  • 1
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    Regulation of leucine metabolism in man: a stable isotope study (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-04
    Description: Leucine catabolism is regulated by either of the first two degradative steps: (reversible) transamination to the keto acid or subsequent decarboxylation. A method is described to measure rates of leucine transamination, reamination, and keto acid oxidation. The method is applied directly to humans by infusing the nonradioactive tracer, L-[15N,1-13C]leucine. Leucine transamination was found to be operating several times faster than the keto acid decarboxylation and to be of equal magnitude in adult human males under two different dietary conditions, postabsorptive and fed. These results indicate that decarboxylation, not transamination, is the rate-limiting step in normal human leucine metabolism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matthews, D E -- Bier, D M -- Rennie, M J -- Edwards, R H -- Halliday, D -- Millward, D J -- Clugston, G A -- AM-25994/AM/NIADDK NIH HHS/ -- HD-10667/HD/NICHD NIH HHS/ -- RR-00954/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 Dec 4;214(4525):1129-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7302583" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Carbon Isotopes ; Humans ; Kinetics ; Leucine/*metabolism ; Male ; Models, Biological ; Nitrogen Isotopes ; Oxidation-Reduction
    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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    Production of alpha 1,3-galactosyltransferase-deficient pigs (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-21
    Description: The enzyme alpha1,3-galactosyltransferase (alpha1,3GT or GGTA1) synthesizes alpha1,3-galactose (alpha1,3Gal) epitopes (Galalpha1,3Galbeta1,4GlcNAc-R), which are the major xenoantigens causing hyperacute rejection in pig-to-human xenotransplantation. Complete removal of alpha1,3Gal from pig organs is the critical step toward the success of xenotransplantation. We reported earlier the targeted disruption of one allele of the alpha1,3GT gene in cloned pigs. A selection procedure based on a bacterial toxin was used to select for cells in which the second allele of the gene was knocked out. Sequencing analysis demonstrated that knockout of the second allele of the alpha1,3GT gene was caused by a T-to-G single point mutation at the second base of exon 9, which resulted in inactivation of the alpha1,3GT protein. Four healthy alpha1,3GT double-knockout female piglets were produced by three consecutive rounds of cloning. The piglets carrying a point mutation in the alpha1,3GT gene hold significant value, as they would allow production of alpha1,3Gal-deficient pigs free of antibiotic-resistance genes and thus have the potential to make a safer product for human use.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3154759/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3154759/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phelps, Carol J -- Koike, Chihiro -- Vaught, Todd D -- Boone, Jeremy -- Wells, Kevin D -- Chen, Shu-Hung -- Ball, Suyapa -- Specht, Susan M -- Polejaeva, Irina A -- Monahan, Jeff A -- Jobst, Pete M -- Sharma, Sugandha B -- Lamborn, Ashley E -- Garst, Amy S -- Moore, Marilyn -- Demetris, Anthony J -- Rudert, William A -- Bottino, Rita -- Bertera, Suzanne -- Trucco, Massimo -- Starzl, Thomas E -- Dai, Yifan -- Ayares, David L -- DK29961/DK/NIDDK NIH HHS/ -- R01 AM007772/AM/NIADDK NIH HHS/ -- R01 DK029961-19/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2003 Jan 17;299(5605):411-4. Epub 2002 Dec 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉PPL Therapeutics Inc., 1700 Kraft Drive, Blacksburg, VA 24060, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12493821" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Bacterial Toxins/pharmacology ; Cell Line ; Cloning, Molecular ; Cloning, Organism ; DNA, Complementary ; Embryo Transfer ; Enterotoxins/pharmacology ; Female ; Fibroblasts ; Galactosyltransferases/*deficiency/*genetics ; *Gene Targeting ; Genetic Vectors ; HeLa Cells ; Humans ; Immunoglobulin M/blood ; Islets of Langerhans Transplantation ; Mice ; Mice, Knockout ; *Point Mutation ; Pregnancy ; Swine/*genetics ; Transfection ; Transplantation, Heterologous ; Trisaccharides/*analysis/biosynthesis/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
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    Trophoblast L-selectin-mediated adhesion at the maternal-fetal interface (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-01-18
    Description: Trophoblast adhesion to the uterine wall is the requisite first step of implantation and, subsequently, placentation. At the maternal-fetal interface, we investigated the expression of selectin adhesion systems that enable leukocyte capture from the bloodstream. On the maternal side, human uterine epithelial cells up-regulated selectin oligosaccharide-based ligands during the window of receptivity. On the fetal side, human trophoblasts expressed L-selectin. This ligand-receptor system was functional, because beads coated with the selectin ligand 6-sulfo sLe(x) bound to trophoblasts, and trophoblasts bound to ligand-expressing uterine luminal epithelium in tissue sections. These results suggest that trophoblast L-selectin mediates interactions with the uterus and that this adhesion mechanism may be critical to establishing human pregnancy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Genbacev, Olga D -- Prakobphol, Akraporn -- Foulk, Russell A -- Krtolica, Ana R -- Ilic, Dusko -- Singer, Mark S -- Yang, Zhi-Qiang -- Kiessling, Laura L -- Rosen, Steven D -- Fisher, Susan J -- DE 07244/DE/NIDCR NIH HHS/ -- HL 64597/HL/NHLBI NIH HHS/ -- R37GM23547/GM/NIGMS NIH HHS/ -- U01 HD 42283/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2003 Jan 17;299(5605):405-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Stomatology, Anatomy, and Pharmaceutical Chemistry, University of California, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12532021" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies ; Blastocyst/physiology ; Cell Adhesion ; Cells, Cultured ; *Embryo Implantation ; Endometrium/cytology/metabolism/*physiology ; Epithelial Cells/metabolism ; Female ; Follicular Phase ; Humans ; Immunoblotting ; Jurkat Cells ; L-Selectin/immunology/*metabolism ; Ligands ; Luteal Phase ; Mice ; Microspheres ; Oligosaccharides/*metabolism ; Organ Culture Techniques ; Pregnancy ; Trophoblasts/metabolism/*physiology ; Up-Regulation
    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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    The thymus-adrenal connection: thymosin has corticotropin-releasing activity in primates (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-12-23
    Description: Endotoxin-free thymosin fraction 5 elevated corticotropin, beta-endorphin, and cortisol in a dose- and time-dependent fashion when administered intravenously to prepubertal cynomolgus monkeys. Two synthetic component peptides of thymosin fraction 5 had no acute effects on pituitary function, suggesting that some other peptides in thymosin fraction 5 were responsible for its corticotropin-releasing activity. In agreement with these observations, total thymectomy of juvenile macaques was associated with decreases in plasma cortisol, corticotropin, and beta-endorphin. These findings indicate that the prepubertal primate thymus contains corticotropin-releasing activity that may contribute to a physiological immunoregulatory circuit between the developing immunological and pituitary-adrenal systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Healy, D L -- Hodgen, G D -- Schulte, H M -- Chrousos, G P -- Loriaux, D L -- Hall, N R -- Goldstein, A L -- CA 24974/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1983 Dec 23;222(4630):1353-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6318312" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/*blood ; Animals ; Dose-Response Relationship, Drug ; Endorphins/blood ; Female ; Hydrocortisone/blood ; Kinetics ; Macaca fascicularis ; Thymectomy ; Thymosin/analogs & derivatives/*pharmacology ; Thymus Gland/*physiology ; beta-Endorphin
    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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    Antibody catalysis of the oxidation of water (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-08
    Description: Recently we reported that antibodies can generate hydrogen peroxide (H2O2) from singlet molecular oxygen (1O2*). We now show that this process is catalytic, and we identify the electron source for a quasi-unlimited generation of H2O2. Antibodies produce up to 500 mole equivalents of H2O2 from 1O2*, without a reduction in rate, and we have excluded metals or Cl- as the electron source. On the basis of isotope incorporation experiments and kinetic data, we propose that antibodies use H2O as an electron source, facilitating its addition to 1O2* to form H2O3 as the first intermediate in a reaction cascade that eventually leads to H2O2. X-ray crystallographic studies with xenon point to putative conserved oxygen binding sites within the antibody fold where this chemistry could be initiated. Our findings suggest a protective function of immunoglobulins against 1O2* and raise the question of whether the need to detoxify 1O2* has played a decisive role in the evolution of the immunoglobulin fold.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wentworth , P Jr -- Jones, L H -- Wentworth, A D -- Zhu, X -- Larsen, N A -- Wilson, I A -- Xu, X -- Goddard , W A 3rd -- Janda, K D -- Eschenmoser, A -- Lerner, R A -- CA27489/CA/NCI NIH HHS/ -- GM43858/GM/NIGMS NIH HHS/ -- HD 36385/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2001 Sep 7;293(5536):1806-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11546867" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Catalytic/chemistry/*metabolism ; Binding Sites ; Catalysis ; Conserved Sequence ; Crystallography, X-Ray ; Humans ; Hydrogen Peroxide/*metabolism ; Kinetics ; Models, Molecular ; Oxidants/chemistry/*metabolism ; Oxidation-Reduction ; Oxygen/*metabolism ; Protein Conformation ; Singlet Oxygen ; Spectrometry, Mass, Electrospray Ionization ; Thermodynamics ; Tryptophan/metabolism ; Ultraviolet Rays ; Water/*chemistry/*metabolism ; Xenon/metabolism
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  • 6
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    Epigenetic instability in ES cells and cloned mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-07
    Description: Cloning by nuclear transfer (NT) is an inefficient process in which most clones die before birth and survivors often display growth abnormalities. In an effort to correlate gene expression with survival and fetal overgrowth, we have examined imprinted gene expression in both mice cloned by nuclear transfer and in the embryonic stem (ES) cell donor populations from which they were derived. The epigenetic state of the ES cell genome was found to be extremely unstable. Similarly, variation in imprinted gene expression was observed in most cloned mice, even in those derived from ES cells of the same subclone. Many of the animals survived to adulthood despite widespread gene dysregulation, indicating that mammalian development may be rather tolerant to epigenetic aberrations of the genome. These data imply that even apparently normal cloned animals may have subtle abnormalities in gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Humpherys, D -- Eggan, K -- Akutsu, H -- Hochedlinger, K -- Rideout , W M 3rd -- Biniszkiewicz, D -- Yanagimachi, R -- Jaenisch, R -- 5-R35-CA44339/CA/NCI NIH HHS/ -- R01-CA84198/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jul 6;293(5527):95-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, Department of Biology, Massachusetts Institute of Technology, 9 Cambridge Center, Cambridge MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11441181" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Birth Weight ; Cell Nucleus/*genetics ; Cesarean Section ; *Cloning, Organism/methods ; Congenital Abnormalities/genetics ; DNA Methylation ; Embryo Loss/genetics ; Embryo Transfer ; Embryo, Mammalian/*cytology/metabolism ; Female ; Fetal Death/genetics ; *Gene Expression Regulation, Developmental ; Gene Silencing ; Genomic Imprinting/*genetics ; Mice ; Oocytes/metabolism ; Placenta/metabolism ; Placentation ; Polyploidy ; Pregnancy ; RNA, Messenger/genetics/metabolism ; Respiration ; Stem Cells/*cytology/*metabolism ; Survival Rate
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  • 7
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    Enzyme dynamics during catalysis (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-23
    Description: Internal protein dynamics are intimately connected to enzymatic catalysis. However, enzyme motions linked to substrate turnover remain largely unknown. We have studied dynamics of an enzyme during catalysis at atomic resolution using nuclear magnetic resonance relaxation methods. During catalytic action of the enzyme cyclophilin A, we detect conformational fluctuations of the active site that occur on a time scale of hundreds of microseconds. The rates of conformational dynamics of the enzyme strongly correlate with the microscopic rates of substrate turnover. The present results, together with available structural data, allow a prediction of the reaction trajectory.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eisenmesser, Elan Zohar -- Bosco, Daryl A -- Akke, Mikael -- Kern, Dorothee -- GM62117/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2002 Feb 22;295(5559):1520-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Brandeis University, Waltham, MA 02454, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11859194" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Catalysis ; Cyclophilin A/*chemistry/*metabolism ; Hydrogen Bonding ; Isomerism ; Kinetics ; Mathematics ; Models, Molecular ; Nuclear Magnetic Resonance, Biomolecular ; Protein Binding ; Protein Conformation
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  • 8
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    Role of 4.5S RNA in assembly of the bacterial signal recognition particle with its receptor (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-06-02
    Description: The mechanism by which a signal recognition particle (SRP) and its receptor mediate protein targeting to the endoplasmic reticulum or to the bacterial plasma membrane is evolutionarily conserved. In Escherichia coli, this reaction is mediated by the Ffh/4.5S RNA ribonucleoprotein complex (Ffh/4.5S RNP; the SRP) and the FtsY protein (the SRP receptor). We have quantified the effects of 4.5S RNA on Ffh-FtsY complex formation by monitoring changes in tryptophan fluorescence. Surprisingly, 4.5S RNA facilitates both assembly and disassembly of the Ffh-FtsY complex to a similar extent. These results provide an example of an RNA molecule facilitating protein-protein interactions in a catalytic fashion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peluso, P -- Herschlag, D -- Nock, S -- Freymann, D M -- Johnson, A E -- Walter, P -- GM 26494/GM/NIGMS NIH HHS/ -- GM 32384/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Jun 2;288(5471):1640-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10834842" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/chemistry/*metabolism ; Catalysis ; Escherichia coli/metabolism ; *Escherichia coli Proteins ; Guanosine Diphosphate/metabolism ; Guanosine Triphosphate/metabolism ; Guanylyl Imidodiphosphate/metabolism ; Kinetics ; Models, Chemical ; Nucleic Acid Conformation ; Protein Binding ; Protein Conformation ; Protein Structure, Tertiary ; RNA, Bacterial/chemistry/*metabolism ; Receptors, Cytoplasmic and Nuclear/chemistry/*metabolism ; Ribonucleoproteins/chemistry/metabolism ; Signal Recognition Particle/chemistry/*metabolism ; Spectrometry, Fluorescence ; Thermodynamics ; Tryptophan
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  • 9
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    A beta2 adrenergic receptor signaling complex assembled with the Ca2+ channel Cav1.2 (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-07
    Description: The existence of a large number of receptors coupled to heterotrimeric guanine nucleotide binding proteins (G proteins) raises the question of how a particular receptor selectively regulates specific targets. We provide insight into this question by identifying a prototypical macromolecular signaling complex. The beta(2) adrenergic receptor was found to be directly associated with one of its ultimate effectors, the class C L-type calcium channel Ca(v)1.2. This complex also contained a G protein, an adenylyl cyclase, cyclic adenosine monophosphate-dependent protein kinase, and the counterbalancing phosphatase PP2A. Our electrophysiological recordings from hippocampal neurons demonstrate highly localized signal transduction from the receptor to the channel. The assembly of this signaling complex provides a mechanism that ensures specific and rapid signaling by a G protein-coupled receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davare, M A -- Avdonin, V -- Hall, D D -- Peden, E M -- Burette, A -- Weinberg, R J -- Horne, M C -- Hoshi, T -- Hell, J W -- AG00213/AG/NIA NIH HHS/ -- AG17502/AG/NIA NIH HHS/ -- GM08688/GM/NIGMS NIH HHS/ -- GM56900/GM/NIGMS NIH HHS/ -- HL61645/HL/NHLBI NIH HHS/ -- NS35563/NS/NINDS NIH HHS/ -- NS39444/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jul 6;293(5527):98-101.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of Wisconsin, Madison, WI 53706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11441182" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/metabolism ; Adrenergic beta-2 Receptor Agonists ; Albuterol/pharmacology ; Animals ; Calcium Channels, L-Type/genetics/*metabolism ; Cell Line ; Cell Membrane/metabolism ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Electric Conductivity ; Fluorescent Antibody Technique ; Heterotrimeric GTP-Binding Proteins/metabolism ; Humans ; Isoproterenol/pharmacology ; Kinetics ; Macromolecular Substances ; Neurons/cytology/drug effects/enzymology/metabolism ; Phosphoprotein Phosphatases/metabolism ; Precipitin Tests ; Prosencephalon/cytology/metabolism ; Protein Binding ; Pyramidal Cells/cytology/drug effects/enzymology/metabolism ; Rats ; Receptors, Adrenergic, beta-2/genetics/*metabolism ; *Signal Transduction ; Substrate Specificity
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  • 10
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    Production of alpha-1,3-galactosyltransferase knockout pigs by nuclear transfer cloning (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-01-05
    Description: The presence of galactose alpha-1,3-galactose residues on the surface of pig cells is a major obstacle to successful xenotransplantation. Here, we report the production of four live pigs in which one allele of the alpha-1,3-galactosyltransferase locus has been knocked out. These pigs were produced by nuclear transfer technology; clonal fetal fibroblast cell lines were used as nuclear donors for embryos reconstructed with enucleated pig oocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lai, Liangxue -- Kolber-Simonds, Donna -- Park, Kwang-Wook -- Cheong, Hee-Tae -- Greenstein, Julia L -- Im, Gi-Sun -- Samuel, Melissa -- Bonk, Aaron -- Rieke, August -- Day, Billy N -- Murphy, Clifton N -- Carter, David B -- Hawley, Robert J -- Prather, Randall S -- R44 RR15198/RR/NCRR NIH HHS/ -- T32 RR07004/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2002 Feb 8;295(5557):1089-92. Epub 2002 Jan 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Animal Science, University of Missouri, Columbia, MO 65211, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11778012" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; *Animals, Genetically Modified ; Cell Line ; *Cloning, Organism ; Embryo Transfer ; Female ; Fetus ; Fibroblasts ; Galactosyltransferases/*genetics ; *Gene Targeting ; Genetic Vectors ; Male ; Mutagenesis, Insertional ; Nuclear Transfer Techniques ; Pregnancy ; Recombination, Genetic ; Swine ; Swine, Miniature/embryology/*genetics ; Transfection
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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