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  • 1
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    Complete development of mosquito phases of the malaria parasite in vitro (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-01-26
    Description: Methods for reproducible in vitro development of the mosquito stages of malaria parasites to produce infective sporozoites have been elusive for over 40 years. We have cultured gametocytes of Plasmodium berghei through to infectious sporozoites with efficiencies similar to those recorded in vivo and without the need for salivary gland invasion. Oocysts developed extracellularly in a system whose essential elements include co-cultured Drosophila S2 cells, basement membrane matrix, and insect tissue culture medium. Sporozoite production required the presence of para-aminobenzoic acid. The entire life cycle of P. berghei, a useful model malaria parasite, can now be achieved in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Al-Olayan, Ebtesam M -- Beetsma, Annette L -- Butcher, Geoff A -- Sinden, Robert E -- Hurd, Hilary -- New York, N.Y. -- Science. 2002 Jan 25;295(5555):677-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Applied Entomology and Parasitology, School of Life Sciences, Keele University, Staffordshire ST5 5BG, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11809973" target="_blank"〉PubMed〈/a〉
    Keywords: 4-Aminobenzoic Acid/pharmacology ; Aedes ; Aerobiosis ; Animals ; Anopheles/parasitology ; Cell Line ; Coculture Techniques ; Collagen ; Culture Media ; Drosophila ; Drug Combinations ; Hydrogen-Ion Concentration ; Laminin ; Life Cycle Stages ; Malaria/parasitology ; Male ; Mice ; Plasmodium berghei/cytology/drug effects/*growth & development ; Proteoglycans
    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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    Neutrophil Mac-1 and MEL-14 adhesion proteins inversely regulated by chemotactic factors (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-09-15
    Description: The neutrophil Mac-1 and gp100MEL-14 adhesion proteins are involved in neutrophil extravasation during inflammation. Both the expression and activity of Mac-1 are greatly increased after neutrophil activation. In contrast, neutrophils shed gp100MEL-14 from the cell surface within 4 minutes after activation with chemotactic factors or phorbol esters, releasing a 96-kilodalton fragment of the antigen into the supernatant. Immunohistology showed that gp100MEL-14 was downregulated on neutrophils that had extravasated into inflamed tissue. The gp100MEL-14 adhesion protein may participate in the binding of unactivated neutrophils to the endothelium; rapid shedding of gp100MEL-14 may prevent extravasation into and damage of normal tissues by activated neutrophils.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kishimoto, T K -- Jutila, M A -- Berg, E L -- Butcher, E C -- AI 19957/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1989 Sep 15;245(4923):1238-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Stanford University, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2551036" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Differentiation/*immunology ; Antigens, Surface/*immunology ; Bone Marrow Cells ; Cell Adhesion ; Cell Adhesion Molecules ; Chemotactic Factors/*physiology ; Complement C5/physiology ; Complement C5a ; Fluorescent Antibody Technique ; Interleukin-1/physiology ; Interleukin-8 ; Kinetics ; Leukotriene B4/physiology ; Lipopolysaccharides/physiology ; Lymphocyte Activation ; Macrophage Activation ; Macrophage-1 Antigen ; Mice ; Mice, Inbred BALB C ; Neutrophils/cytology/*immunology ; Tetradecanoylphorbol Acetate ; Tumor Necrosis Factor-alpha/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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    A hub-and-spoke circuit drives pheromone attraction and social behaviour in C. elegans (2009)
    Nature Publishing Group (NPG)
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    Publication Date: 2009-04-08
    Description: Innate social behaviours emerge from neuronal circuits that interpret sensory information on the basis of an individual's own genotype, sex and experience. The regulated aggregation behaviour of the nematode Caenorhabditis elegans, a simple animal with only 302 neurons, is an attractive system to analyse these circuits. Wild social strains of C. elegans aggregate in the presence of specific sensory cues, but solitary strains do not. Here we identify the RMG inter/motor neuron as the hub of a regulated circuit that controls aggregation and related behaviours. RMG is the central site of action of the neuropeptide receptor gene npr-1, which distinguishes solitary strains (high npr-1 activity) from wild social strains (low npr-1 activity); high RMG activity is essential for all aspects of social behaviour. Anatomical gap junctions connect RMG to several classes of sensory neurons known to promote aggregation, and to ASK sensory neurons, which are implicated in male attraction to hermaphrodite pheromones. We find that ASK neurons respond directly to pheromones, and that high RMG activity enhances ASK responses in social strains, causing hermaphrodite attraction to pheromones at concentrations that repel solitary hermaphrodites. The coordination of social behaviours by RMG suggests an anatomical hub-and-spoke model for sensory integration in aggregation, and points to functions for related circuit motifs in the C. elegans wiring diagram.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2760495/" 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/PMC2760495/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Macosko, Evan Z -- Pokala, Navin -- Feinberg, Evan H -- Chalasani, Sreekanth H -- Butcher, Rebecca A -- Clardy, Jon -- Bargmann, Cornelia I -- CA24487/CA/NCI NIH HHS/ -- F32 GM077943/GM/NIGMS NIH HHS/ -- F32 GM077943-03/GM/NIGMS NIH HHS/ -- GM07739/GM/NIGMS NIH HHS/ -- GM077943/GM/NIGMS NIH HHS/ -- R01 CA024487/CA/NCI NIH HHS/ -- R01 CA024487-30/CA/NCI NIH HHS/ -- T32 GM007739/GM/NIGMS NIH HHS/ -- T32 GM007739-30/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2009 Apr 30;458(7242):1171-5. doi: 10.1038/nature07886. Epub 2009 Apr 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Laboratory of Neural Circuits and Behavior, The Rockefeller University, 1230 York Avenue, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19349961" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/cytology/drug effects/*physiology ; Caenorhabditis elegans Proteins/genetics/metabolism ; Disorders of Sex Development ; Feeding Behavior/drug effects/physiology ; Male ; Models, Neurological ; Mutation ; Neural Pathways/drug effects/*physiology ; Neurons/drug effects/physiology ; Pheromones/pharmacology/*physiology ; Receptors, Neuropeptide Y/genetics/metabolism ; *Social Behavior
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 4
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    Benzothiazinones kill Mycobacterium tuberculosis by blocking arabinan synthesis (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-03-21
    Description: New drugs are required to counter the tuberculosis (TB) pandemic. Here, we describe the synthesis and characterization of 1,3-benzothiazin-4-ones (BTZs), a new class of antimycobacterial agents that kill Mycobacterium tuberculosis in vitro, ex vivo, and in mouse models of TB. Using genetics and biochemistry, we identified the enzyme decaprenylphosphoryl-beta-d-ribose 2'-epimerase as a major BTZ target. Inhibition of this enzymatic activity abolishes the formation of decaprenylphosphoryl arabinose, a key precursor that is required for the synthesis of the cell-wall arabinans, thus provoking cell lysis and bacterial death. The most advanced compound, BTZ043, is a candidate for inclusion in combination therapies for both drug-sensitive and extensively drug-resistant TB.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3128490/" 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/PMC3128490/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Makarov, Vadim -- Manina, Giulia -- Mikusova, Katarina -- Mollmann, Ute -- Ryabova, Olga -- Saint-Joanis, Brigitte -- Dhar, Neeraj -- Pasca, Maria Rosalia -- Buroni, Silvia -- Lucarelli, Anna Paola -- Milano, Anna -- De Rossi, Edda -- Belanova, Martina -- Bobovska, Adela -- Dianiskova, Petronela -- Kordulakova, Jana -- Sala, Claudia -- Fullam, Elizabeth -- Schneider, Patricia -- McKinney, John D -- Brodin, Priscille -- Christophe, Thierry -- Waddell, Simon -- Butcher, Philip -- Albrethsen, Jakob -- Rosenkrands, Ida -- Brosch, Roland -- Nandi, Vrinda -- Bharath, Sowmya -- Gaonkar, Sheshagiri -- Shandil, Radha K -- Balasubramanian, Venkataraman -- Balganesh, Tanjore -- Tyagi, Sandeep -- Grosset, Jacques -- Riccardi, Giovanna -- Cole, Stewart T -- 062511/Wellcome Trust/United Kingdom -- 080039/Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2009 May 8;324(5928):801-4. doi: 10.1126/science.1171583. Epub 2009 Mar 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉A. N. Bakh Institute of Biochemistry, Russian Academy of Science, 119071 Moscow, Russia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19299584" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antitubercular Agents/chemical synthesis/chemistry/*pharmacology/*therapeutic use ; Arabinose/metabolism ; Cell Wall/metabolism ; Drug Resistance, Bacterial ; Enzyme Inhibitors/cerebrospinal fluid/chemistry/pharmacology/therapeutic use ; Ethambutol/pharmacology ; Gene Expression Regulation, Bacterial/drug effects ; Genes, Bacterial ; Mice ; Mice, Inbred BALB C ; Microbial Sensitivity Tests ; Molecular Sequence Data ; Molecular Structure ; Mycobacterium/drug effects/genetics ; Mycobacterium tuberculosis/*drug effects/genetics/metabolism ; Polysaccharides/*biosynthesis ; Racemases and Epimerases/*antagonists & inhibitors/metabolism ; Spiro Compounds/chemical synthesis/chemistry/*pharmacology/*therapeutic use ; Thiazines/chemical synthesis/chemistry/*pharmacology/*therapeutic use ; Tuberculosis/*drug therapy/microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 5
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    Two chemoreceptors mediate developmental effects of dauer pheromone in C. elegans (2009)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2009-10-03
    Description: Intraspecific chemical communication is mediated by signals called pheromones. Caenorhabditis elegans secretes a mixture of small molecules (collectively termed dauer pheromone) that regulates entry into the alternate dauer larval stage and also modulates adult behavior via as yet unknown receptors. Here, we identify two heterotrimeric GTP-binding protein (G protein)-coupled receptors (GPCRs) that mediate dauer formation in response to a subset of dauer pheromone components. The SRBC-64 and SRBC-66 GPCRs are members of the large Caenorhabditis-specific SRBC subfamily and are expressed in the ASK chemosensory neurons, which are required for pheromone-induced dauer formation. Expression of both, but not each receptor alone, confers pheromone-mediated effects on heterologous cells. Identification of dauer pheromone receptors will allow a better understanding of the signaling cascades that transduce the context-dependent effects of ecologically important chemical signals.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448937/" 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/PMC4448937/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Kyuhyung -- Sato, Koji -- Shibuya, Mayumi -- Zeiger, Danna M -- Butcher, Rebecca A -- Ragains, Justin R -- Clardy, Jon -- Touhara, Kazushige -- Sengupta, Piali -- F32 GM077943/GM/NIGMS NIH HHS/ -- P30 NS045713/NS/NINDS NIH HHS/ -- P30 NS45713/NS/NINDS NIH HHS/ -- R01 CA024487/CA/NCI NIH HHS/ -- R01 CA24487/CA/NCI NIH HHS/ -- R01 GM056223/GM/NIGMS NIH HHS/ -- R01 GM56223/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Nov 13;326(5955):994-8. doi: 10.1126/science.1176331. Epub 2009 Oct 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology and National Center for Behavioral Genomics, Brandeis University, Waltham, MA 02454, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19797623" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/genetics/*growth & development/*physiology ; Caenorhabditis elegans Proteins/genetics/physiology ; Calcium/metabolism ; Cell Line ; Chemoreceptor Cells/metabolism ; Cyclic AMP/metabolism ; Cyclic GMP/metabolism ; GTP-Binding Protein alpha Subunits, Gi-Go/physiology ; Gene Expression Regulation, Developmental ; Genes, Helminth ; Guanylate Cyclase/antagonists & inhibitors/metabolism ; Hexoses/chemistry/physiology ; Humans ; Mutation ; Pheromones/*physiology ; Receptors, G-Protein-Coupled ; Reproduction ; Signal Transduction ; 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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    Plasticity of animal genome architecture unmasked by rapid evolution of a pelagic tunicate (2010)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2010-11-26
    Description: Genomes of animals as different as sponges and humans show conservation of global architecture. Here we show that multiple genomic features including transposon diversity, developmental gene repertoire, physical gene order, and intron-exon organization are shattered in the tunicate Oikopleura, belonging to the sister group of vertebrates and retaining chordate morphology. Ancestral architecture of animal genomes can be deeply modified and may therefore be largely nonadaptive. This rapidly evolving animal lineage thus offers unique perspectives on the level of genome plasticity. It also illuminates issues as fundamental as the mechanisms of intron gain.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3760481/" 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/PMC3760481/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Denoeud, France -- Henriet, Simon -- Mungpakdee, Sutada -- Aury, Jean-Marc -- Da Silva, Corinne -- Brinkmann, Henner -- Mikhaleva, Jana -- Olsen, Lisbeth Charlotte -- Jubin, Claire -- Canestro, Cristian -- Bouquet, Jean-Marie -- Danks, Gemma -- Poulain, Julie -- Campsteijn, Coen -- Adamski, Marcin -- Cross, Ismael -- Yadetie, Fekadu -- Muffato, Matthieu -- Louis, Alexandra -- Butcher, Stephen -- Tsagkogeorga, Georgia -- Konrad, Anke -- Singh, Sarabdeep -- Jensen, Marit Flo -- Huynh Cong, Evelyne -- Eikeseth-Otteraa, Helen -- Noel, Benjamin -- Anthouard, Veronique -- Porcel, Betina M -- Kachouri-Lafond, Rym -- Nishino, Atsuo -- Ugolini, Matteo -- Chourrout, Pascal -- Nishida, Hiroki -- Aasland, Rein -- Huzurbazar, Snehalata -- Westhof, Eric -- Delsuc, Frederic -- Lehrach, Hans -- Reinhardt, Richard -- Weissenbach, Jean -- Roy, Scott W -- Artiguenave, Francois -- Postlethwait, John H -- Manak, J Robert -- Thompson, Eric M -- Jaillon, Olivier -- Du Pasquier, Louis -- Boudinot, Pierre -- Liberles, David A -- Volff, Jean-Nicolas -- Philippe, Herve -- Lenhard, Boris -- Roest Crollius, Hugues -- Wincker, Patrick -- Chourrout, Daniel -- Z01 LM000073-12/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2010 Dec 3;330(6009):1381-5. doi: 10.1126/science.1194167. Epub 2010 Nov 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Commissariat a l'Energie Atomique, Institut de Genomique, Genoscope, Evry, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21097902" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; DNA Transposable Elements ; DNA, Intergenic ; Exons ; Gene Order ; Genes, Duplicate ; Genes, Homeobox ; *Genome ; Introns ; Invertebrates/classification/genetics ; Molecular Sequence Data ; Recombination, Genetic ; Spliceosomes/metabolism ; Synteny ; Urochordata/anatomy & histology/classification/*genetics/immunology ; Vertebrates/classification/genetics
    Print ISSN: 0036-8075
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  • 7
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    Parallel evolution of domesticated Caenorhabditis species targets pheromone receptor genes (2011)
    Nature Publishing Group (NPG)
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    Publication Date: 2011-08-19
    Description: Evolution can follow predictable genetic trajectories, indicating that discrete environmental shifts can select for reproducible genetic changes. Conspecific individuals are an important feature of an animal's environment, and a potential source of selective pressures. Here we show that adaptation of two Caenorhabditis species to growth at high density, a feature common to domestic environments, occurs by reproducible genetic changes to pheromone receptor genes. Chemical communication through pheromones that accumulate during high-density growth causes young nematode larvae to enter the long-lived but non-reproductive dauer stage. Two strains of Caenorhabditis elegans grown at high density have independently acquired multigenic resistance to pheromone-induced dauer formation. In each strain, resistance to the pheromone ascaroside C3 results from a deletion that disrupts the adjacent chemoreceptor genes serpentine receptor class g (srg)-36 and -37. Through misexpression experiments, we show that these genes encode redundant G-protein-coupled receptors for ascaroside C3. Multigenic resistance to dauer formation has also arisen in high-density cultures of a different nematode species, Caenorhabditis briggsae, resulting in part from deletion of an srg gene paralogous to srg-36 and srg-37. These results demonstrate rapid remodelling of the chemoreceptor repertoire as an adaptation to specific environments, and indicate that parallel changes to a common genetic substrate can affect life-history traits across species.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3257054/" 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/PMC3257054/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McGrath, Patrick T -- Xu, Yifan -- Ailion, Michael -- Garrison, Jennifer L -- Butcher, Rebecca A -- Bargmann, Cornelia I -- GM07739/GM/NIGMS NIH HHS/ -- K99 GM092859/GM/NIGMS NIH HHS/ -- K99 GM092859-02/GM/NIGMS NIH HHS/ -- R00 GM087533/GM/NIGMS NIH HHS/ -- R00GM87533/GM/NIGMS NIH HHS/ -- T32 GM007739/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2011 Aug 17;477(7364):321-5. doi: 10.1038/nature10378.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Laboratory of Neural Circuits and Behavior, The Rockefeller University, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21849976" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological/genetics/physiology ; Animals ; *Biological Evolution ; Caenorhabditis elegans/classification/drug effects/*genetics/*physiology ; Environment ; Evolution, Molecular ; Glycolipids/metabolism/pharmacology ; Hibernation/genetics/physiology ; Larva/growth & development ; Pheromones/metabolism/pharmacology ; Population Density ; Quantitative Trait Loci/genetics ; Receptors, Pheromone/*genetics/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
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    Lymphocyte homing and homeostasis (1996)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1996-04-05
    Description: The integration and control of systemic immune responses depends on the regulated trafficking of lymphocytes. This lymphocyte "homing" process disperses the immunologic repertoire, directs lymphocyte subsets to the specialized microenvironments that control their differentiation and regulate their survival, and targets immune effector cells to sites of antigenic or microbial invasion. Recent advances reveal that the exquisite specificity of lymphocyte homing is determined by combinatorial "decision processes" involving multistep sequential engagement of adhesion and signaling receptors. These homing-related interactions are seamlessly integrated into the overall interaction of the lymphocyte with its environment and participate directly in the control of lymphocyte function, life-span, and population dynamics. In this article a review of the molecular basis of lymphocyte homing is presented, and mechanisms by which homing physiology regulated the homeostasis of immunologic resources are proposed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Butcher, E C -- Picker, L J -- New York, N.Y. -- Science. 1996 Apr 5;272(5258):60-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University School of Medicine, CA 94305-5324, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8600538" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/immunology ; B-Lymphocytes/*immunology/physiology ; Blood Vessels/physiology ; Cell Adhesion ; Cell Movement ; Chemokines/physiology ; Endothelium, Vascular/cytology/physiology ; Homeostasis ; Humans ; Lymphoid Tissue/immunology ; Receptors, Lymphocyte Homing/*physiology ; T-Lymphocytes/*immunology/physiology
    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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  • 9
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    Role of Rho in chemoattractant-activated leukocyte adhesion through integrins (1996)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1996-02-16
    Description: Heterotrimeric guanine nucleotide binding protein (G protein)-linked receptors of the chemoattractant subfamily can trigger adhesion through leukocyte integrins, and in this role they are thought to regulate immune cell-cell interactions and trafficking. In lymphoid cells transfected with formyl peptide or interleukin-8 receptors, agonist stimulation activated nucleotide exchange on the small guanosine triphosphate-binding protein RhoA in seconds. Inactivation of Rho by C3 transferase exoenzyme blocked agonist-induced lymphocyte alpha4beta1 adhesion to vascular cell adhesion molecule-1 and neutrophil beta2 integrin adhesion to fibrinogen. These findings suggest that Rho participates in signaling from chemoattractant receptors to trigger rapid adhesion in leukocytes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laudanna, C -- Campbell, J J -- Butcher, E C -- 1F32 AI08930/AI/NIAID NIH HHS/ -- 5T32 CA09302/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1996 Feb 16;271(5251):981-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8584934" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, CD/genetics ; B-Lymphocytes/*physiology ; *Cell Adhesion ; Cells, Cultured ; Chemotactic Factors/*pharmacology ; GTP-Binding Proteins/metabolism/*physiology ; Guanosine 5'-O-(3-Thiotriphosphate)/metabolism ; Guanosine Diphosphate/metabolism ; Integrin alpha4beta1 ; Integrins/*physiology ; Interleukin-8/pharmacology ; Mice ; Molecular Sequence Data ; N-Formylmethionine Leucyl-Phenylalanine/pharmacology ; Receptors, Formyl Peptide ; Receptors, Immunologic/genetics ; Receptors, Interleukin/genetics ; Receptors, Interleukin-8A ; Receptors, Lymphocyte Homing/*physiology ; Receptors, Peptide/genetics ; Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Transfection ; Vascular Cell Adhesion Molecule-1/*physiology ; rhoA GTP-Binding Protein
    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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    Induction of apoptosis by the low-affinity NGF receptor (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-16
    Description: Nerve growth factor (NGF) binding to cellular receptors is required for the survival of some neural cells. In contrast to TrkA, the high-affinity NGF receptor that transduces NGF signals for survival and differentiation, the function of the low-affinity NGF receptor, p75NGFR, remains uncertain. Expression of p75NGFR induced neural cell death constitutively when p75NGFR was unbound; binding by NGF or monoclonal antibody, however, inhibited cell death induced by p75NGFR. Thus, expression of p75NGFR may explain the dependence of some neural cells on NGF for survival. These findings also suggest that p75NGFR has some functional similarities to other members of a superfamily of receptors that include tumor necrosis factor receptors, Fas (Apo-1), and CD40.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rabizadeh, S -- Oh, J -- Zhong, L T -- Yang, J -- Bitler, C M -- Butcher, L L -- Bredesen, D E -- AG10671/AG/NIA NIH HHS/ -- NS10928/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1993 Jul 16;261(5119):345-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of California, Los Angeles 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8332899" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis/drug effects ; Cell Line ; Cell Survival/drug effects ; Culture Media, Serum-Free ; Nerve Growth Factors/*metabolism/pharmacology ; Neurons/*cytology/drug effects/metabolism ; PC12 Cells ; Receptors, Nerve Growth Factor/metabolism/*physiology ; Transfection
    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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