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  • Articles  (11)
  • 2015-2019  (11)
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  • Articles  (11)
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  • 1
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    Corrigendum: Pan-viral specificity of IFN-induced genes reveals new roles for cGAS in innate immunity (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-07-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schoggins, John W -- MacDuff, Donna A -- Imanaka, Naoko -- Gainey, Maria D -- Shrestha, Bimmi -- Eitson, Jennifer L -- Mar, Katrina B -- Richardson, R Blake -- Ratushny, Alexander V -- Litvak, Vladimir -- Dabelic, Rea -- Manicassamy, Balaji -- Aitchison, John D -- Aderem, Alan -- Elliott, Richard M -- Garcia-Sastre, Adolfo -- Racaniello, Vincent -- Snijder, Eric J -- Yokoyama, Wayne M -- Diamond, Michael S -- Virgin, Herbert W -- Rice, Charles M -- K01 DK095031/DK/NIDDK NIH HHS/ -- R00 AI095320/AI/NIAID NIH HHS/ -- R01 AI032972/AI/NIAID NIH HHS/ -- R01 AI091707/AI/NIAID NIH HHS/ -- R01 AI102597/AI/NIAID NIH HHS/ -- R01 AI104972/AI/NIAID NIH HHS/ -- England -- Nature. 2015 Sep 3;525(7567):144. doi: 10.1038/nature14555. Epub 2015 Jul 8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26153856" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
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    Unique role for ATG5 in neutrophil-mediated immunopathology during M. tuberculosis infection (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-12-10
    Description: Mycobacterium tuberculosis, a major global health threat, replicates in macrophages in part by inhibiting phagosome-lysosome fusion, until interferon-gamma (IFNgamma) activates the macrophage to traffic M. tuberculosis to the lysosome. How IFNgamma elicits this effect is unknown, but many studies suggest a role for macroautophagy (herein termed autophagy), a process by which cytoplasmic contents are targeted for lysosomal degradation. The involvement of autophagy has been defined based on studies in cultured cells where M. tuberculosis co-localizes with autophagy factors ATG5, ATG12, ATG16L1, p62, NDP52, BECN1 and LC3 (refs 2-6), stimulation of autophagy increases bacterial killing, and inhibition of autophagy increases bacterial survival. Notably, these studies reveal modest (~1.5-3-fold change) effects on M. tuberculosis replication. By contrast, mice lacking ATG5 in monocyte-derived cells and neutrophils (polymorponuclear cells, PMNs) succumb to M. tuberculosis within 30 days, an extremely severe phenotype similar to mice lacking IFNgamma signalling. Importantly, ATG5 is the only autophagy factor that has been studied during M. tuberculosis infection in vivo and autophagy-independent functions of ATG5 have been described. For this reason, we used a genetic approach to elucidate the role for multiple autophagy-related genes and the requirement for autophagy in resistance to M. tuberculosis infection in vivo. Here we show that, contrary to expectation, autophagic capacity does not correlate with the outcome of M. tuberculosis infection. Instead, ATG5 plays a unique role in protection against M. tuberculosis by preventing PMN-mediated immunopathology. Furthermore, while Atg5 is dispensable in alveolar macrophages during M. tuberculosis infection, loss of Atg5 in PMNs can sensitize mice to M. tuberculosis. These findings shift our understanding of the role of ATG5 during M. tuberculosis infection, reveal new outcomes of ATG5 activity, and shed light on early events in innate immunity that are required to regulate disease pathology and bacterial replication.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kimmey, Jacqueline M -- Huynh, Jeremy P -- Weiss, Leslie A -- Park, Sunmin -- Kambal, Amal -- Debnath, Jayanta -- Virgin, Herbert W -- Stallings, Christina L -- GM007067/GM/NIGMS NIH HHS/ -- U19 AI109725/AI/NIAID NIH HHS/ -- England -- Nature. 2015 Dec 24;528(7583):565-9. doi: 10.1038/nature16451. Epub 2015 Dec 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Microbiology, Washington University School of Medicine, St Louis, Missouri 63110, USA. ; Department of Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri 63110, USA. ; Department of Pathology and Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26649827" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autophagy/genetics ; Dendritic Cells/immunology/metabolism ; Female ; Immunity, Innate/immunology ; Interferon-gamma/deficiency/immunology ; Macrophages, Alveolar/immunology/metabolism ; Male ; Mice ; Microtubule-Associated Proteins/deficiency/*metabolism ; *Mycobacterium tuberculosis/immunology/physiology ; Neutrophils/*immunology/metabolism ; Tuberculosis/*immunology/microbiology/*pathology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
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    Vertically transmitted faecal IgA levels determine extra-chromosomal phenotypic variation (2015)
    Nature Publishing Group (NPG)
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    Publication Date: 2015-02-18
    Description: The proliferation of genetically modified mouse models has exposed phenotypic variation between investigators and institutions that has been challenging to control. In many cases, the microbiota is the presumed cause of the variation. Current solutions to account for phenotypic variability include littermate and maternal controls or defined microbial consortia in gnotobiotic mice. In conventionally raised mice, the microbiome is transmitted from the dam. Here we show that microbially driven dichotomous faecal immunoglobulin-A (IgA) levels in wild-type mice within the same facility mimic the effects of chromosomal mutations. We observe in multiple facilities that vertically transmissible bacteria in IgA-low mice dominantly lower faecal IgA levels in IgA-high mice after co-housing or faecal transplantation. In response to injury, IgA-low mice show increased damage that is transferable by faecal transplantation and driven by faecal IgA differences. We find that bacteria from IgA-low mice degrade the secretory component of secretory IgA as well as IgA itself. These data indicate that phenotypic comparisons between mice must take into account the non-chromosomal hereditary variation between different breeders. We propose faecal IgA as one marker of microbial variability and conclude that co-housing and/or faecal transplantation enables analysis of progeny from different dams.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4425643/" 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/PMC4425643/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moon, Clara -- Baldridge, Megan T -- Wallace, Meghan A -- Burnham, Carey-Ann D -- Virgin, Herbert W -- Stappenbeck, Thaddeus S -- AI08488702/AI/NIAID NIH HHS/ -- DK7161907/DK/NIDDK NIH HHS/ -- P30 DK052574/DK/NIDDK NIH HHS/ -- P30AR048335/AR/NIAMS NIH HHS/ -- P30DK052574/DK/NIDDK NIH HHS/ -- R01 DK071619/DK/NIDDK NIH HHS/ -- R01 DK097079/DK/NIDDK NIH HHS/ -- R01 DK101354/DK/NIDDK NIH HHS/ -- R01 OD011170/OD/NIH HHS/ -- T32 AI007163/AI/NIAID NIH HHS/ -- T32AI007163/AI/NIAID NIH HHS/ -- T32CA009547/CA/NCI NIH HHS/ -- England -- Nature. 2015 May 7;521(7550):90-3. doi: 10.1038/nature14139. Epub 2015 Feb 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25686606" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
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    Protective efficacy of adenovirus/protein vaccines against SIV challenges in rhesus monkeys (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-07-04
    Description: Preclinical studies of viral vector-based HIV-1 vaccine candidates have previously shown partial protection against neutralization-resistant virus challenges in rhesus monkeys. In this study, we evaluated the protective efficacy of adenovirus serotype 26 (Ad26) vector priming followed by purified envelope (Env) glycoprotein boosting. Rhesus monkeys primed with Ad26 vectors expressing SIVsmE543 Env, Gag, and Pol and boosted with AS01B-adjuvanted SIVmac32H Env gp140 demonstrated complete protection in 50% of vaccinated animals against a series of repeated, heterologous, intrarectal SIVmac251 challenges that infected all controls. Protective efficacy correlated with the functionality of Env-specific antibody responses. Comparable protection was also observed with a similar Ad/Env vaccine against repeated, heterologous, intrarectal SHIV-SF162P3 challenges. These data demonstrate robust protection by Ad/Env vaccines against acquisition of neutralization-resistant virus challenges in rhesus monkeys.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4653134/" 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/PMC4653134/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barouch, Dan H -- Alter, Galit -- Broge, Thomas -- Linde, Caitlyn -- Ackerman, Margaret E -- Brown, Eric P -- Borducchi, Erica N -- Smith, Kaitlin M -- Nkolola, Joseph P -- Liu, Jinyan -- Shields, Jennifer -- Parenteau, Lily -- Whitney, James B -- Abbink, Peter -- Ng'ang'a, David M -- Seaman, Michael S -- Lavine, Christy L -- Perry, James R -- Li, Wenjun -- Colantonio, Arnaud D -- Lewis, Mark G -- Chen, Bing -- Wenschuh, Holger -- Reimer, Ulf -- Piatak, Michael -- Lifson, Jeffrey D -- Handley, Scott A -- Virgin, Herbert W -- Koutsoukos, Marguerite -- Lorin, Clarisse -- Voss, Gerald -- Weijtens, Mo -- Pau, Maria G -- Schuitemaker, Hanneke -- AI060354/AI/NIAID NIH HHS/ -- AI078526/AI/NIAID NIH HHS/ -- AI080289/AI/NIAID NIH HHS/ -- AI084794/AI/NIAID NIH HHS/ -- AI095985/AI/NIAID NIH HHS/ -- AI096040/AI/NIAID NIH HHS/ -- AI102660/AI/NIAID NIH HHS/ -- AI102691/AI/NIAID NIH HHS/ -- OD011170/OD/NIH HHS/ -- P30 AI060354/AI/NIAID NIH HHS/ -- R01 AI080289/AI/NIAID NIH HHS/ -- R01 AI084794/AI/NIAID NIH HHS/ -- R01 AI102660/AI/NIAID NIH HHS/ -- R01 AI102691/AI/NIAID NIH HHS/ -- R01 OD011170/OD/NIH HHS/ -- R37 AI080289/AI/NIAID NIH HHS/ -- U19 AI078526/AI/NIAID NIH HHS/ -- U19 AI095985/AI/NIAID NIH HHS/ -- U19 AI096040/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2015 Jul 17;349(6245):320-4. doi: 10.1126/science.aab3886. Epub 2015 Jul 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA. Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard University, Cambridge, MA 02139, USA. dbarouch@bidmc.harvard.edu. ; Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard University, Cambridge, MA 02139, USA. ; Thayer School of Engineering at Dartmouth, Hanover, NH 03755, USA. ; Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA. ; University of Massachusetts Medical School, Worcester, MA 01605, USA. ; New England Primate Research Center, Southborough, MA 01772, USA. ; Bioqual, Rockville, MD 20852, USA. ; Children's Hospital, Boston, MA 02115, USA. ; JPT Peptide Technologies GmbH, 12489 Berlin, Germany. ; AIDS and Cancer Virus Program, Leidos Biomedical Research, Frederick National Laboratory, Frederick, MD 21702, USA. ; Washington University School of Medicine, St. Louis, MO 63110, USA. ; GSK Vaccines, 1330 Rixensart, Belgium. ; Janssen Infectious Diseases and Vaccines (formerly Crucell), 2301 Leiden, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26138104" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Vaccines/*immunology ; Adenovirus Vaccines/*immunology ; Adoptive Transfer ; Animals ; Antibodies, Neutralizing/immunology ; Female ; Gene Products, env/*immunology ; Gene Products, gag/immunology ; Gene Products, pol/immunology ; Genetic Vectors/immunology ; HIV-1/*immunology ; Histocompatibility Antigens Class I/genetics/immunology ; Immunization, Secondary ; Macaca mulatta ; Male ; SAIDS Vaccines/*immunology ; Simian Acquired Immunodeficiency Syndrome/*prevention & control ; Simian Immunodeficiency Virus/immunology
    Print ISSN: 0036-8075
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  • 5
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    Viral immunity. Transkingdom control of viral infection and immunity in the mammalian intestine (2016)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2016-01-28
    Description: Viruses that infect the intestine include major human pathogens (retroviruses, noroviruses, rotaviruses, astroviruses, picornaviruses, adenoviruses, herpesviruses) that constitute a serious public health problem worldwide. These viral pathogens are members of a large, complex viral community inhabiting the intestine termed "the enteric virome." Enteric viruses have intimate functional and genetic relationships with both the host and other microbial constituents that inhabit the intestine, such as the bacterial microbiota, their associated phages, helminthes, and fungi, which together constitute the microbiome. Emerging data indicate that enteric viruses regulate, and are in turn regulated by, these other microbes through a series of processes termed "transkingdom interactions." This represents a changing paradigm in intestinal immunity to viral infection. Here we review recent advances in the field and propose new ways in which to conceptualize this important area.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4751997/" 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/PMC4751997/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pfeiffer, Julie K -- Virgin, Herbert W -- R01 AI074668/AI/NIAID NIH HHS/ -- R01 AI111918/AI/NIAID NIH HHS/ -- R01 DK 101354/DK/NIDDK NIH HHS/ -- R21 AI114927/AI/NIAID NIH HHS/ -- R24 OD019793/OD/NIH HHS/ -- U19 AI109725/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2016 Jan 15;351(6270). pii: aad5872. doi: 10.1126/science.aad5872. Epub 2016 Jan 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. julie.pfeiffer@utsouthwestern.edu virgin@wustl.edu. ; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA. julie.pfeiffer@utsouthwestern.edu virgin@wustl.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26816384" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteria/immunology/virology ; Bacteriophages/physiology ; Fungi/immunology ; Host-Pathogen Interactions/immunology ; Humans ; Intestinal Diseases/*immunology/*virology ; Intestines/*immunology/*virology ; Microbiota/*immunology ; Virus Diseases/*immunology ; Viruses/*immunology
    Print ISSN: 0036-8075
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  • 6
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    Noncanonical autophagy inhibits the autoinflammatory, lupus-like response to dying cells (2016)
    Nature Publishing Group (NPG)
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    Publication Date: 2016-04-21
    Description: Defects in clearance of dying cells have been proposed to underlie the pathogenesis of systemic lupus erythematosus (SLE). Mice lacking molecules associated with dying cell clearance develop SLE-like disease, and phagocytes from patients with SLE often display defective clearance and increased inflammatory cytokine production when exposed to dying cells in vitro. Previously, we and others described a form of noncanonical autophagy known as LC3-associated phagocytosis (LAP), in which phagosomes containing engulfed particles, including dying cells, recruit elements of the autophagy pathway to facilitate maturation of phagosomes and digestion of their contents. Genome-wide association studies have identified polymorphisms in the Atg5 (ref. 8) and possibly Atg7 (ref. 9) genes, involved in both canonical autophagy and LAP, as markers of a predisposition for SLE. Here we describe the consequences of defective LAP in vivo. Mice lacking any of several components of the LAP pathway show increased serum levels of inflammatory cytokines and autoantibodies, glomerular immune complex deposition, and evidence of kidney damage. When dying cells are injected into LAP-deficient mice, they are engulfed but not efficiently degraded and trigger acute elevation of pro-inflammatory cytokines but not anti-inflammatory interleukin (IL)-10. Repeated injection of dying cells into LAP-deficient, but not LAP-sufficient, mice accelerated the development of SLE-like disease, including increased serum levels of autoantibodies. By contrast, mice deficient in genes required for canonical autophagy but not LAP do not display defective dying cell clearance, inflammatory cytokine production, or SLE-like disease, and, like wild-type mice, produce IL-10 in response to dying cells. Therefore, defects in LAP, rather than canonical autophagy, can cause SLE-like phenomena, and may contribute to the pathogenesis of SLE.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4860026/" 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/PMC4860026/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, Jennifer -- Cunha, Larissa D -- Park, Sunmin -- Yang, Mao -- Lu, Qun -- Orchard, Robert -- Li, Quan-Zhen -- Yan, Mei -- Janke, Laura -- Guy, Cliff -- Linkermann, Andreas -- Virgin, Herbert W -- Green, Douglas R -- 1ZIAES10328601/PHS HHS/ -- R01 AI040646/AI/NIAID NIH HHS/ -- R01 AI40646/AI/NIAID NIH HHS/ -- U19 AI109725/AI/NIAID NIH HHS/ -- ZIA ES103286-01/Intramural NIH HHS/ -- England -- Nature. 2016 May 5;533(7601):115-9. doi: 10.1038/nature17950. Epub 2016 Apr 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA. ; Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, 111 T.W. Alexander Drive, Research Triangle Park, North Carolina 27709, USA. ; Department of Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri 63110, USA. ; University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Division of Nephrology and Hypertension, Christian-Albrechts-University, Kiel 24105, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27096368" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Antibody Complex/metabolism ; Autoantibodies/blood ; *Autophagy/genetics ; Cytokines/biosynthesis/blood ; Inflammation/blood/genetics/*pathology ; Interleukin-10/biosynthesis ; Kidney/metabolism/pathology ; Lupus Erythematosus, Systemic/blood/genetics/*immunology/*pathology ; Male ; Mice ; Microtubule-Associated Proteins/metabolism ; Phagocytes/cytology/physiology ; Phagosomes/physiology
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  • 7
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    Gut DNA virome in childhood malnutrition [Microbiology] (2015)
    National Academy of Sciences
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    Publication Date: 2015-09-23
    Description: The bacterial component of the human gut microbiota undergoes a definable program of postnatal development. Evidence is accumulating that this program is disrupted in children with severe acute malnutrition (SAM) and that their persistent gut microbiota immaturity, which is not durably repaired with current ready-to-use therapeutic food (RUTF) interventions, is...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 8
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    WDFY4 is required for cross-presentation in response to viral and tumor antigens (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018
    Description: 〈p〉During the process of cross-presentation, viral or tumor-derived antigens are presented to CD8〈sup〉+〈/sup〉 T cells by 〈i〉Batf3-〈/i〉dependent CD8α〈sup〉+〈/sup〉/XCR1〈sup〉+〈/sup〉 classical dendritic cells (cDC1s). We designed a functional CRISPR screen for previously unknown regulators of cross-presentation, and identified the BEACH domain–containing protein WDFY4 as essential for cross-presentation of cell-associated antigens by cDC1s in mice. However, WDFY4 was not required for major histocompatibility complex class II presentation, nor for cross-presentation by monocyte-derived dendritic cells. In contrast to 〈i〉Batf3〈/i〉〈sup〉–/–〈/sup〉 mice, 〈i〉Wdfy4〈/i〉〈sup〉–/–〈/sup〉 mice displayed normal lymphoid and nonlymphoid cDC1 populations that produce interleukin-12 and protect against 〈i〉Toxoplasma gondii〈/i〉 infection. However, similar to 〈i〉Batf3〈/i〉〈sup〉–/–〈/sup〉 mice, 〈i〉Wdfy4〈/i〉〈sup〉–/–〈/sup〉 mice failed to prime virus-specific CD8〈sup〉+〈/sup〉 T cells in vivo or induce tumor rejection, revealing a critical role for cross-presentation in antiviral and antitumor immunity.〈/p〉
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  • 9
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    Lysosomal degradation of a viral oncoprotein [Immunology and Inflammation] (2016)
    National Academy of Sciences
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    Publication Date: 2016-03-16
    Description: The ubiquitin-proteasome system degrades viral oncoproteins and other microbial virulence factors; however, the role of endolysosomal degradation pathways in these processes is unclear. Kaposi’s sarcoma-associated herpesvirus (KSHV) is the causative agent of Kaposi’s sarcoma, and a constitutively active viral G protein-coupled receptor (vGPCR) contributes to the pathogenesis of KSHV-induced tumors....
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    Topics: Biology , Medicine , Natural Sciences in General
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  • 10
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    WDFY4 is required for cross-presentation in response to viral and tumor antigens (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018-11-09
    Description: During the process of cross-presentation, viral or tumor-derived antigens are presented to CD8 + T cells by Batf3- dependent CD8α + /XCR1 + classical dendritic cells (cDC1s). We designed a functional CRISPR screen for previously unknown regulators of cross-presentation, and identified the BEACH domain–containing protein WDFY4 as essential for cross-presentation of cell-associated antigens by cDC1s in mice. However, WDFY4 was not required for major histocompatibility complex class II presentation, nor for cross-presentation by monocyte-derived dendritic cells. In contrast to Batf3 –/– mice, Wdfy4 –/– mice displayed normal lymphoid and nonlymphoid cDC1 populations that produce interleukin-12 and protect against Toxoplasma gondii infection. However, similar to Batf3 –/– mice, Wdfy4 –/– mice failed to prime virus-specific CD8 + T cells in vivo or induce tumor rejection, revealing a critical role for cross-presentation in antiviral and antitumor immunity.
    Keywords: Immunology, Medicine, Diseases
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    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
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