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  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2010-04-17
    Description: When the food intake of organisms such as yeast and rodents is reduced (dietary restriction), they live longer than organisms fed a normal diet. A similar effect is seen when the activity of nutrient-sensing pathways is reduced by mutations or chemical inhibitors. In rodents, both dietary restriction and decreased nutrient-sensing pathway activity can lower the incidence of age-related loss of function and disease, including tumors and neurodegeneration. Dietary restriction also increases life span and protects against diabetes, cancer, and cardiovascular disease in rhesus monkeys, and in humans it causes changes that protect against these age-related pathologies. Tumors and diabetes are also uncommon in humans with mutations in the growth hormone receptor, and natural genetic variants in nutrient-sensing pathways are associated with increased human life span. Dietary restriction and reduced activity of nutrient-sensing pathways may thus slow aging by similar mechanisms, which have been conserved during evolution. We discuss these findings and their potential application to prevention of age-related disease and promotion of healthy aging in humans, and the challenge of possible negative side effects.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3607354/" 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/PMC3607354/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fontana, Luigi -- Partridge, Linda -- Longo, Valter D -- AG025135/AG/NIA NIH HHS/ -- AG20642/AG/NIA NIH HHS/ -- GM075308/GM/NIGMS NIH HHS/ -- P30 DK056341/DK/NIDDK NIH HHS/ -- P30DK056341/DK/NIDDK NIH HHS/ -- R01 AG020642/AG/NIA NIH HHS/ -- UL1 RR024992/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2010 Apr 16;328(5976):321-6. doi: 10.1126/science.1172539.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Geriatrics and Nutritional Science, Washington University School of Medicine, St. Louis, MO 63110, USA. lfontana@dom.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20395504" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Caenorhabditis elegans/genetics/physiology ; *Caloric Restriction ; Drosophila/genetics/physiology ; Eating ; Haplorhini ; Humans ; *Longevity ; Mice ; Saccharomyces cerevisiae/genetics/physiology ; *Signal Transduction
    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: 2014-02-01
    Description: Genetic errors in meiosis can lead to birth defects and spontaneous abortions. Checkpoint mechanisms of hitherto unknown nature eliminate oocytes with unrepaired DNA damage, causing recombination-defective mutant mice to be sterile. Here, we report that checkpoint kinase 2 (Chk2 or Chek2), is essential for culling mouse oocytes bearing unrepaired meiotic or induced DNA double-strand breaks (DSBs). Female infertility caused by a meiotic recombination mutation or irradiation was reversed by mutation of Chk2. Both meiotically programmed and induced DSBs trigger CHK2-dependent activation of TRP53 (p53) and TRP63 (p63), effecting oocyte elimination. These data establish CHK2 as essential for DNA damage surveillance in female meiosis and indicate that the oocyte DSB damage response primarily involves a pathway hierarchy in which ataxia telangiectasia and Rad3-related (ATR) signals to CHK2, which then activates p53 and p63.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4048839/" 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/PMC4048839/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bolcun-Filas, Ewelina -- Rinaldi, Vera D -- White, Michelle E -- Schimenti, John C -- GM45415/GM/NIGMS NIH HHS/ -- R01 GM045415/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2014 Jan 31;343(6170):533-6. doi: 10.1126/science.1247671.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biomedical Sciences, Cornell University, Ithaca, NY 14850, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24482479" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/genetics/metabolism ; Animals ; Cell Cycle Proteins/genetics/metabolism ; Checkpoint Kinase 2/genetics/*physiology ; *DNA Breaks, Double-Stranded ; Female ; HeLa Cells ; Humans ; Infertility, Female/*genetics/pathology ; Meiosis/genetics ; Mice ; Mice, Inbred C57BL ; Mice, Mutant Strains ; Oocytes/*metabolism/pathology ; Phosphoproteins/*metabolism ; Trans-Activators/*metabolism ; Tumor Suppressor Protein p53/*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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  • 3
    Publication Date: 2012-08-03
    Description: After host entry through mucosal surfaces, human immunodeficiency virus-1 (HIV-1) disseminates to lymphoid tissues to establish a generalized infection of the immune system. The mechanisms by which this virus spreads among permissive target cells locally during the early stages of transmission and systemically during subsequent dissemination are not known. In vitro studies suggest that the formation of virological synapses during stable contacts between infected and uninfected T cells greatly increases the efficiency of viral transfer. It is unclear, however, whether T-cell contacts are sufficiently stable in vivo to allow for functional synapse formation under the conditions of perpetual cell motility in epithelial and lymphoid tissues. Here, using multiphoton intravital microscopy, we examine the dynamic behaviour of HIV-infected T cells in the lymph nodes of humanized mice. We find that most productively infected T cells migrate robustly, resulting in their even distribution throughout the lymph node cortex. A subset of infected cells formed multinucleated syncytia through HIV envelope-dependent cell fusion. Both uncoordinated motility of syncytia and adhesion to CD4(+) lymph node cells led to the formation of long membrane tethers, increasing cell lengths to up to ten times that of migrating uninfected T cells. Blocking the egress of migratory T cells from the lymph nodes into efferent lymph vessels, and thus interrupting T-cell recirculation, limited HIV dissemination and strongly reduced plasma viraemia. Thus, we have found that HIV-infected T cells are motile, form syncytia and establish tethering interactions that may facilitate cell-to-cell transmission through virological synapses. Migration of T cells in lymph nodes therefore spreads infection locally, whereas their recirculation through tissues is important for efficient systemic viral spread, suggesting new molecular targets to antagonize HIV infection.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3470742/" 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/PMC3470742/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murooka, Thomas T -- Deruaz, Maud -- Marangoni, Francesco -- Vrbanac, Vladimir D -- Seung, Edward -- von Andrian, Ulrich H -- Tager, Andrew M -- Luster, Andrew D -- Mempel, Thorsten R -- P01 AI0178897/AI/NIAID NIH HHS/ -- P30 AI060354/AI/NIAID NIH HHS/ -- P30 AR042689/AR/NIAMS NIH HHS/ -- P30 DK043351/DK/NIDDK NIH HHS/ -- P30AI060354/AI/NIAID NIH HHS/ -- R01 CA150975/CA/NCI NIH HHS/ -- R56 AI097052/AI/NIAID NIH HHS/ -- T32 AI007387/AI/NIAID NIH HHS/ -- England -- Nature. 2012 Oct 11;490(7419):283-7. doi: 10.1038/nature11398. Epub 2012 Aug 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22854780" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD4-Positive T-Lymphocytes/*virology ; Cell Movement ; Cells, Cultured ; Disease Models, Animal ; Female ; Giant Cells ; HIV/*immunology ; HIV Infections/*immunology/transmission/*virology ; Humans ; Lymph Nodes/virology ; Mice ; Mice, Inbred NOD ; Mice, SCID ; Mice, Transgenic
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2014-02-28
    Description: B lymphocytes have critical roles as positive and negative regulators of immunity. Their inhibitory function has been associated primarily with interleukin 10 (IL-10) because B-cell-derived IL-10 can protect against autoimmune disease and increase susceptibility to pathogens. Here we identify IL-35-producing B cells as key players in the negative regulation of immunity. Mice in which only B cells did not express IL-35 lost their ability to recover from the T-cell-mediated demyelinating autoimmune disease experimental autoimmune encephalomyelitis (EAE). In contrast, these mice displayed a markedly improved resistance to infection with the intracellular bacterial pathogen Salmonella enterica serovar Typhimurium as shown by their superior containment of the bacterial growth and their prolonged survival after primary infection, and upon secondary challenge, compared to control mice. The increased immunity found in mice lacking IL-35 production by B cells was associated with a higher activation of macrophages and inflammatory T cells, as well as an increased function of B cells as antigen-presenting cells (APCs). During Salmonella infection, IL-35- and IL-10-producing B cells corresponded to two largely distinct sets of surface-IgM(+)CD138(hi)TACI(+)CXCR4(+)CD1d(int)Tim1(int) plasma cells expressing the transcription factor Blimp1 (also known as Prdm1). During EAE, CD138(+) plasma cells were also the main source of B-cell-derived IL-35 and IL-10. Collectively, our data show the importance of IL-35-producing B cells in regulation of immunity and highlight IL-35 production by B cells as a potential therapeutic target for autoimmune and infectious diseases. This study reveals the central role of activated B cells, particularly plasma cells, and their production of cytokines in the regulation of immune responses in health and disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4260166/" 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/PMC4260166/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shen, Ping -- Roch, Toralf -- Lampropoulou, Vicky -- O'Connor, Richard A -- Stervbo, Ulrik -- Hilgenberg, Ellen -- Ries, Stefanie -- Dang, Van Duc -- Jaimes, Yarua -- Daridon, Capucine -- Li, Rui -- Jouneau, Luc -- Boudinot, Pierre -- Wilantri, Siska -- Sakwa, Imme -- Miyazaki, Yusei -- Leech, Melanie D -- McPherson, Rhoanne C -- Wirtz, Stefan -- Neurath, Markus -- Hoehlig, Kai -- Meinl, Edgar -- Grutzkau, Andreas -- Grun, Joachim R -- Horn, Katharina -- Kuhl, Anja A -- Dorner, Thomas -- Bar-Or, Amit -- Kaufmann, Stefan H E -- Anderton, Stephen M -- Fillatreau, Simon -- 087833/Wellcome Trust/United Kingdom -- 095831/Wellcome Trust/United Kingdom -- G0801924/Medical Research Council/United Kingdom -- G0901697/Medical Research Council/United Kingdom -- G1100084/Medical Research Council/United Kingdom -- Canadian Institutes of Health Research/Canada -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2014 Mar 20;507(7492):366-70. doi: 10.1038/nature12979. Epub 2014 Feb 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Deutsches Rheuma-Forschungszentrum, a Leibniz Institute, Chariteplatz 1, 10117 Berlin, Germany [2]. ; 1] Deutsches Rheuma-Forschungszentrum, a Leibniz Institute, Chariteplatz 1, 10117 Berlin, Germany [2] Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Kantstrasse 55, 14513 Teltow, Germany. [3]. ; Deutsches Rheuma-Forschungszentrum, a Leibniz Institute, Chariteplatz 1, 10117 Berlin, Germany. ; University of Edinburgh, Centre for Inflammation Research and Centre for Multiple Sclerosis Research, Queen's Medical Research Institute, Edinburgh EH16 4TJ, UK. ; 1] Deutsches Rheuma-Forschungszentrum, a Leibniz Institute, Chariteplatz 1, 10117 Berlin, Germany [2] Charite Universitatsmedizin Berlin, CC12, Department of Medicine/Rheumatology and Clinical Immunology, 10117 Berlin, Germany. ; Neuroimmunology Unit, Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec H3A2B4, Canada. ; Virologie et Immunologie Moleculaires, INRA, 78352 Jouy-en-Josas, France. ; Medical Clinic 1, Kussmaul Campus for Medical Research, University of Erlangen-Nurnberg, 91054 Erlangen, Germany. ; Institut fur Klinische Neuroimmunologie Klinikum der Ludwig-Maximilians-Universitat Munchen, 81377 Munchen, Germany. ; Immunpathologie, Research Center ImmunoSciences, 12203 Berlin, Germany. ; Max Planck Institute of Infection Biology, Department of Immunology, Chariteplatz 1, 10117 Berlin, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24572363" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Presenting Cells/immunology/metabolism ; Antigens, CD40/immunology ; B-Lymphocytes/*immunology/*metabolism/secretion ; Encephalomyelitis, Autoimmune, Experimental/*immunology ; Female ; Humans ; Immunity/*immunology ; Interleukin-10/metabolism ; Interleukins/immunology/*metabolism/secretion ; Lymphocyte Activation ; Macrophages/cytology/immunology ; Male ; Mice ; Plasma Cells/immunology/metabolism ; Salmonella Infections/*immunology/microbiology ; T-Lymphocytes/immunology ; Toll-Like Receptor 4/immunology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2013-10-18
    Description: Cell migration requires the generation of branched actin networks that power the protrusion of the plasma membrane in lamellipodia. The actin-related proteins 2 and 3 (Arp2/3) complex is the molecular machine that nucleates these branched actin networks. This machine is activated at the leading edge of migrating cells by Wiskott-Aldrich syndrome protein (WASP)-family verprolin-homologous protein (WAVE, also known as SCAR). The WAVE complex is itself directly activated by the small GTPase Rac, which induces lamellipodia. However, how cells regulate the directionality of migration is poorly understood. Here we identify a new protein, Arpin, that inhibits the Arp2/3 complex in vitro, and show that Rac signalling recruits and activates Arpin at the lamellipodial tip, like WAVE. Consistently, after depletion of the inhibitory Arpin, lamellipodia protrude faster and cells migrate faster. A major role of this inhibitory circuit, however, is to control directional persistence of migration. Indeed, Arpin depletion in both mammalian cells and Dictyostelium discoideum amoeba resulted in straighter trajectories, whereas Arpin microinjection in fish keratocytes, one of the most persistent systems of cell migration, induced these cells to turn. The coexistence of the Rac-Arpin-Arp2/3 inhibitory circuit with the Rac-WAVE-Arp2/3 activatory circuit can account for this conserved role of Arpin in steering cell migration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dang, Irene -- Gorelik, Roman -- Sousa-Blin, Carla -- Derivery, Emmanuel -- Guerin, Christophe -- Linkner, Joern -- Nemethova, Maria -- Dumortier, Julien G -- Giger, Florence A -- Chipysheva, Tamara A -- Ermilova, Valeria D -- Vacher, Sophie -- Campanacci, Valerie -- Herrada, Isaline -- Planson, Anne-Gaelle -- Fetics, Susan -- Henriot, Veronique -- David, Violaine -- Oguievetskaia, Ksenia -- Lakisic, Goran -- Pierre, Fabienne -- Steffen, Anika -- Boyreau, Adeline -- Peyrieras, Nadine -- Rottner, Klemens -- Zinn-Justin, Sophie -- Cherfils, Jacqueline -- Bieche, Ivan -- Alexandrova, Antonina Y -- David, Nicolas B -- Small, J Victor -- Faix, Jan -- Blanchoin, Laurent -- Gautreau, Alexis -- England -- Nature. 2013 Nov 14;503(7475):281-4. doi: 10.1038/nature12611. Epub 2013 Oct 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Group Cytoskeleton in Cell Morphogenesis, Laboratoire d'Enzymologie et Biochimie Structurales, CNRS UPR3082, Gif-sur-Yvette 91190, France [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24132237" target="_blank"〉PubMed〈/a〉
    Keywords: Actin-Related Protein 2-3 Complex/*metabolism ; Animals ; Carrier Proteins/genetics/metabolism ; Cell Line ; Cell Movement/*genetics ; Dictyostelium/genetics/metabolism ; Embryo, Nonmammalian ; Gene Knockout Techniques ; HEK293 Cells ; Humans ; Mice ; Proteins/genetics/metabolism ; Proto-Oncogene Proteins c-akt/metabolism ; Pseudopodia/*genetics/*metabolism ; *Signal Transduction ; Zebrafish/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2012-12-01
    Description: Chronic infections strain the regenerative capacity of antiviral T lymphocyte populations, leading to failure in long-term immunity. The cellular and molecular events controlling this regenerative capacity, however, are unknown. We found that two distinct states of virus-specific CD8(+) T cells exist in chronically infected mice and humans. Differential expression of the T-box transcription factors T-bet and Eomesodermin (Eomes) facilitated the cooperative maintenance of the pool of antiviral CD8(+) T cells during chronic viral infection. T-bet(hi) cells displayed low intrinsic turnover but proliferated in response to persisting antigen, giving rise to Eomes(hi) terminal progeny. Genetic elimination of either subset resulted in failure to control chronic infection, which suggests that an imbalance in differentiation and renewal could underlie the collapse of immunity in humans with chronic infections.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3653769/" 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/PMC3653769/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paley, Michael A -- Kroy, Daniela C -- Odorizzi, Pamela M -- Johnnidis, Jonathan B -- Dolfi, Douglas V -- Barnett, Burton E -- Bikoff, Elizabeth K -- Robertson, Elizabeth J -- Lauer, Georg M -- Reiner, Steven L -- Wherry, E John -- 059312/Wellcome Trust/United Kingdom -- AI061699/AI/NIAID NIH HHS/ -- AI0663445/AI/NIAID NIH HHS/ -- AI076458/AI/NIAID NIH HHS/ -- AI078897/AI/NIAID NIH HHS/ -- AI082630/AI/NIAID NIH HHS/ -- AI083022/AI/NIAID NIH HHS/ -- HHSN266200500030C/AI/NIAID NIH HHS/ -- HHSN266200500030C/PHS HHS/ -- P01 AI078897/AI/NIAID NIH HHS/ -- P30 CA016520/CA/NCI NIH HHS/ -- P30 DK043351/DK/NIDDK NIH HHS/ -- R01 AI042370/AI/NIAID NIH HHS/ -- R01 AI061699/AI/NIAID NIH HHS/ -- R01 AI076458/AI/NIAID NIH HHS/ -- T32 AI007632/AI/NIAID NIH HHS/ -- T32-AI-07324/AI/NIAID NIH HHS/ -- U19 AI082630/AI/NIAID NIH HHS/ -- U19 AI083022/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2012 Nov 30;338(6111):1220-5. doi: 10.1126/science.1229620.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23197535" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD8-Positive T-Lymphocytes/*immunology ; Hepatitis B, Chronic/*immunology ; Humans ; Liver/virology ; Lymphocyte Activation ; Mice ; Mice, Knockout ; Stem Cells/immunology ; T-Box Domain Proteins/genetics/*metabolism ; T-Lymphocyte Subsets/*immunology
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2013-02-01
    Description: The lysosomal degradation pathway of autophagy has a crucial role in defence against infection, neurodegenerative disorders, cancer and ageing. Accordingly, agents that induce autophagy may have broad therapeutic applications. One approach to developing such agents is to exploit autophagy manipulation strategies used by microbial virulence factors. Here we show that a peptide, Tat-beclin 1-derived from a region of the autophagy protein, beclin 1, which binds human immunodeficiency virus (HIV)-1 Nef-is a potent inducer of autophagy, and interacts with a newly identified negative regulator of autophagy, GAPR-1 (also called GLIPR2). Tat-beclin 1 decreases the accumulation of polyglutamine expansion protein aggregates and the replication of several pathogens (including HIV-1) in vitro, and reduces mortality in mice infected with chikungunya or West Nile virus. Thus, through the characterization of a domain of beclin 1 that interacts with HIV-1 Nef, we have developed an autophagy-inducing peptide that has potential efficacy in the treatment of human diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3788641/" 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/PMC3788641/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shoji-Kawata, Sanae -- Sumpter, Rhea -- Leveno, Matthew -- Campbell, Grant R -- Zou, Zhongju -- Kinch, Lisa -- Wilkins, Angela D -- Sun, Qihua -- Pallauf, Kathrin -- MacDuff, Donna -- Huerta, Carlos -- Virgin, Herbert W -- Helms, J Bernd -- Eerland, Ruud -- Tooze, Sharon A -- Xavier, Ramnik -- Lenschow, Deborah J -- Yamamoto, Ai -- King, David -- Lichtarge, Olivier -- Grishin, Nick V -- Spector, Stephen A -- Kaloyanova, Dora V -- Levine, Beth -- K08 AI099150/AI/NIAID NIH HHS/ -- P30 CA142543/CA/NCI NIH HHS/ -- R01 GM066099/GM/NIGMS NIH HHS/ -- R01 GM079656/GM/NIGMS NIH HHS/ -- R01 GM094575/GM/NIGMS NIH HHS/ -- R01 NS050199/NS/NINDS NIH HHS/ -- R01 NS077111/NS/NINDS NIH HHS/ -- R01 NS084912/NS/NINDS NIH HHS/ -- R0I DK083756/DK/NIDDK NIH HHS/ -- R0I DK086502/DK/NIDDK NIH HHS/ -- R0I GM066099/GM/NIGMS NIH HHS/ -- R0I GM079656/GM/NIGMS NIH HHS/ -- R0I NS063973/NS/NINDS NIH HHS/ -- R0I NS077874/NS/NINDS NIH HHS/ -- RC1 DK086502/DK/NIDDK NIH HHS/ -- T32 GM008297/GM/NIGMS NIH HHS/ -- U54 AI057156/AI/NIAID NIH HHS/ -- U54AI057156/AI/NIAID NIH HHS/ -- U54AI057160/AI/NIAID NIH HHS/ -- Cancer Research UK/United Kingdom -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Feb 14;494(7436):201-6. doi: 10.1038/nature11866. Epub 2013 Jan 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, UT Southwestern Medical Center, Dallas, Texas 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23364696" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apoptosis Regulatory Proteins/*chemistry/metabolism/pharmacology/*therapeutic use ; Autophagy/*drug effects ; Cell Membrane Permeability ; Cells, Cultured ; Chikungunya virus/drug effects ; HIV-1/drug effects/metabolism/physiology ; HeLa Cells ; Humans ; Macrophages/cytology ; Membrane Proteins/*chemistry/metabolism/pharmacology/*therapeutic use ; Mice ; Molecular Sequence Data ; Peptide Fragments/*chemistry/metabolism/*pharmacology ; Recombinant Fusion Proteins/chemistry/metabolism/pharmacology ; Virus Replication/drug effects ; West Nile virus/drug effects ; nef Gene Products, Human Immunodeficiency Virus/metabolism ; tat Gene Products, Human Immunodeficiency Virus/genetics/metabolism
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    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2013-12-07
    Description: Immunoglobulin A (IgA) production at mucosal surfaces contributes to protection against pathogens and controls intestinal microbiota composition. However, mechanisms regulating IgA induction are not completely defined. We show that soluble lymphotoxin alpha (sLTalpha3) produced by RORgammat(+) innate lymphoid cells (ILCs) controls T cell-dependent IgA induction in the lamina propria via regulation of T cell homing to the gut. By contrast, membrane-bound lymphotoxin beta (LTalpha1beta2) produced by RORgammat(+) ILCs is critical for T cell-independent IgA induction in the lamina propria via control of dendritic cell functions. Ablation of LTalpha in RORgammat(+) cells abrogated IgA production in the gut and altered microbiota composition. Thus, soluble and membrane-bound lymphotoxins produced by ILCs distinctly organize adaptive immune responses in the gut and control commensal microbiota composition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kruglov, Andrey A -- Grivennikov, Sergei I -- Kuprash, Dmitry V -- Winsauer, Caroline -- Prepens, Sandra -- Seleznik, Gitta Maria -- Eberl, Gerard -- Littman, Dan R -- Heikenwalder, Mathias -- Tumanov, Alexei V -- Nedospasov, Sergei A -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Dec 6;342(6163):1243-6. doi: 10.1126/science.1243364.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉German Rheumatism Research Center (DRFZ), a Leibniz Institute, Berlin 10117, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24311691" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptive Immunity ; Animals ; B-Lymphocytes/immunology ; Dendritic Cells/immunology/metabolism ; Homeostasis ; Immunity, Innate ; Immunoglobulin A/biosynthesis ; Immunoglobulin Class Switching ; Intestinal Mucosa/*immunology/*microbiology ; Intestine, Small/*immunology/microbiology ; Lymph Nodes/immunology ; Lymphocyte Subsets/*immunology/metabolism ; Lymphotoxin-alpha/*immunology/metabolism ; Lymphotoxin-beta/immunology/metabolism ; Mice ; Microbiota/*physiology ; Nitric Oxide Synthase Type II/genetics/metabolism ; Nuclear Receptor Subfamily 1, Group F, Member 3/metabolism ; T-Lymphocytes/immunology/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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