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  • 1
    Publication Date: 2018-10-23
    Description: Genome-wide association studies have recently illuminated that WDFY4 is genetically associated with systemic lupus erythematosus (SLE) susceptibility in various ethnic groups. Despite strong genetic evidence suggesting a role of WDFY4 in SLE pathogenesis, its functional relevance is largely unknown. In this study, we generated Wdfy4 B lymphocyte conditional knockout ( Wdfy4 -CKO) mice and found that loss of Wdfy4 led to a decrease in number of total B cells and several subpopulations of B cells in the periphery and a defect in the transition from the pro– to pre–B cell stage in bone marrow. Also, Wdfy4 -CKO mice showed impaired Ab responses as compared with controls when challenged with Ag. SLE phenotypes were effectively alleviated in Wdfy4 -CKO mice, with significantly diminished pristane-elicited production of autoantibodies and glomerulonephritis. Genetic silencing of WDFY4 in B cells increased lipidation of LC3 independent of p62 and Beclin1, which are essential proteins of canonical autophagy. Our in vivo and in vitro data suggest that WDFY4 facilitates noncanonical autophagic activity. Our findings provide a novel functional link underlying the mechanism of SLE in which WDFY4 influences B cell fate via noncanonical autophagy.
    Print ISSN: 0022-1767
    Electronic ISSN: 1550-6606
    Topics: Medicine
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  • 2
    Publication Date: 2013-09-07
    Description: An avian-origin human-infecting influenza (H7N9) virus was recently identified in China. We have evaluated the viral hemagglutinin (HA) receptor-binding properties of two human H7N9 isolates, A/Shanghai/1/2013 (SH-H7N9) (containing the avian-signature residue Gln(226)) and A/Anhui/1/2013 (AH-H7N9) (containing the mammalian-signature residue Leu(226)). We found that SH-H7N9 HA preferentially binds the avian receptor analog, whereas AH-H7N9 HA binds both avian and human receptor analogs. Furthermore, an AH-H7N9 mutant HA (Leu(226) --〉 Gln) was found to exhibit dual receptor-binding property, indicating that other amino acid substitutions contribute to the receptor-binding switch. The structures of SH-H7N9 HA, AH-H7N9 HA, and its mutant in complex with either avian or human receptor analogs show how AH-H7N9 can bind human receptors while still retaining the avian receptor-binding property.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shi, Yi -- Zhang, Wei -- Wang, Fei -- Qi, Jianxun -- Wu, Ying -- Song, Hao -- Gao, Feng -- Bi, Yuhai -- Zhang, Yanfang -- Fan, Zheng -- Qin, Chengfeng -- Sun, Honglei -- Liu, Jinhua -- Haywood, Joel -- Liu, Wenjun -- Gong, Weimin -- Wang, Dayan -- Shu, Yuelong -- Wang, Yu -- Yan, Jinghua -- Gao, George F -- New York, N.Y. -- Science. 2013 Oct 11;342(6155):243-7. doi: 10.1126/science.1242917. Epub 2013 Sep 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Network of Immunity and Health, Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24009358" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birds ; Crystallography, X-Ray ; Glycine/chemistry/genetics/metabolism ; Hemagglutinin Glycoproteins, Influenza Virus/*chemistry/metabolism ; Humans ; Influenza A virus/*metabolism ; Influenza in Birds/*virology ; Influenza, Human/*virology ; Protein Conformation ; Receptors, Cell Surface/*chemistry/genetics/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: 2015-08-01
    Description: An HIV-1 DNA prime vaccine, with a recombinant adenovirus type 5 (rAd5) boost, failed to protect from HIV-1 acquisition. We studied the nature of the vaccine-induced antibody (Ab) response to HIV-1 envelope (Env). HIV-1-reactive plasma Ab titers were higher to Env gp41 than to gp120, and repertoire analysis demonstrated that 93% of HIV-1-reactive Abs from memory B cells responded to Env gp41. Vaccine-induced gp41-reactive monoclonal antibodies were non-neutralizing and frequently polyreactive with host and environmental antigens, including intestinal microbiota (IM). Next-generation sequencing of an immunoglobulin heavy chain variable region repertoire before vaccination revealed an Env-IM cross-reactive Ab that was clonally related to a subsequent vaccine-induced gp41-reactive Ab. Thus, HIV-1 Env DNA-rAd5 vaccine induced a dominant IM-polyreactive, non-neutralizing gp41-reactive Ab repertoire response that was associated with no vaccine efficacy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4562404/" 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/PMC4562404/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williams, Wilton B -- Liao, Hua-Xin -- Moody, M Anthony -- Kepler, Thomas B -- Alam, S Munir -- Gao, Feng -- Wiehe, Kevin -- Trama, Ashley M -- Jones, Kathryn -- Zhang, Ruijun -- Song, Hongshuo -- Marshall, Dawn J -- Whitesides, John F -- Sawatzki, Kaitlin -- Hua, Axin -- Liu, Pinghuang -- Tay, Matthew Z -- Seaton, Kelly E -- Shen, Xiaoying -- Foulger, Andrew -- Lloyd, Krissey E -- Parks, Robert -- Pollara, Justin -- Ferrari, Guido -- Yu, Jae-Sung -- Vandergrift, Nathan -- Montefiori, David C -- Sobieszczyk, Magdalena E -- Hammer, Scott -- Karuna, Shelly -- Gilbert, Peter -- Grove, Doug -- Grunenberg, Nicole -- McElrath, M Juliana -- Mascola, John R -- Koup, Richard A -- Corey, Lawrence -- Nabel, Gary J -- Morgan, Cecilia -- Churchyard, Gavin -- Maenza, Janine -- Keefer, Michael -- Graham, Barney S -- Baden, Lindsey R -- Tomaras, Georgia D -- Haynes, Barton F -- P30 AI064518/AI/NIAID NIH HHS/ -- P30-AI-64518/AI/NIAID NIH HHS/ -- U01 AI069412/AI/NIAID NIH HHS/ -- UM1 AI068614/AI/NIAID NIH HHS/ -- UM1 AI068618/AI/NIAID NIH HHS/ -- UM1 AI068635/AI/NIAID NIH HHS/ -- UM1 AI069412/AI/NIAID NIH HHS/ -- UM1 AI069470/AI/NIAID NIH HHS/ -- UM1 AI069481/AI/NIAID NIH HHS/ -- UM1 AI069511/AI/NIAID NIH HHS/ -- UM1 AI100645/AI/NIAID NIH HHS/ -- UM1AI068618/AI/NIAID NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2015 Aug 14;349(6249):aab1253. doi: 10.1126/science.aab1253. Epub 2015 Jul 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA. barton.haynes@duke.edu wilton.williams@duke.edu. ; Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA. ; Department of Microbiology, Boston University School of Medicine, Boston, MA, USA. ; Department of Medicine, Columbia University Medical Center, New York, NY, USA. ; Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA. ; The Statistical Center for HIV/AIDS Research and Prevention (SCHARP), Fred Hutchinson Cancer Research Center, Seattle, WA, USA. ; Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA. ; The Aurum Institute, Johannesburg, South Africa. ; University of Rochester School of Medicine, Rochester, NY, USA. ; Brigham and Women's Hospital, Boston, MA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26229114" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Vaccines/*immunology ; Adenoviridae ; Antibodies, Monoclonal/genetics/immunology ; Antibody Formation ; Cross Reactions ; HIV Antibodies/genetics/*immunology ; HIV Envelope Protein gp120/immunology ; HIV Envelope Protein gp41/genetics/*immunology ; HIV-1/*immunology ; Humans ; Immunity ; Immunoglobulin Heavy Chains/genetics/immunology ; Immunoglobulin Variable Region/genetics/immunology ; Immunologic Memory ; Intestines/microbiology ; Microbiota/*immunology ; Vaccines, DNA/*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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  • 4
    Publication Date: 2013-05-04
    Description: Recent studies have identified several mutations in the hemagglutinin (HA) protein that allow the highly pathogenic avian H5N1 influenza A virus to transmit between mammals by airborne route. Here, we determined the complex structures of wild-type and mutant HAs derived from an Indonesia H5N1 virus bound to either avian or human receptor sialic acid analogs. A cis/trans conformational change in the glycosidic linkage of the receptor analog was observed, which explains how the H5N1 virus alters its receptor-binding preference. Furthermore, the mutant HA possessed low affinities for both avian and human receptors. Our findings provide a structural and biophysical basis for the H5N1 adaptation to acquire human, but maintain avian, receptor-binding properties.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Wei -- Shi, Yi -- Lu, Xishan -- Shu, Yuelong -- Qi, Jianxun -- Gao, George F -- New York, N.Y. -- Science. 2013 Jun 21;340(6139):1463-7. doi: 10.1126/science.1236787. Epub 2013 May 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23641058" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Birds ; Carbohydrate Conformation ; Crystallography, X-Ray ; Hemagglutinin Glycoproteins, Influenza Virus/*chemistry/genetics/*metabolism ; Humans ; Influenza A Virus, H5N1 Subtype ; Models, Molecular ; Mutant Proteins/chemistry/metabolism ; Mutation ; Oligosaccharides/chemistry/metabolism ; Protein Binding ; Protein Conformation ; Protein Stability ; Receptors, Cell Surface/chemistry/*metabolism ; Receptors, Virus/chemistry/*metabolism ; Recombinant Proteins/chemistry/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2014-11-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gao, George F -- Feng, Yong -- New York, N.Y. -- Science. 2014 Oct 31;346(6209):666. doi: 10.1126/science.346.6209.666.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉George F. Gao is deputy director general of the Chinese Center for Disease Control and Prevention. Yong Feng is director of the Division of African Affairs in the Department of International Cooperation at China's National Health and Family Planning Commission.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25359978" target="_blank"〉PubMed〈/a〉
    Keywords: Biomedical Research/*manpower ; *Career Choice ; *Ebolavirus ; Hemorrhagic Fever, Ebola/epidemiology/*prevention & control ; Humans ; Laboratory Personnel ; Sierra Leone/epidemiology ; Travel
    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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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2014-04-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gao, George F -- New York, N.Y. -- Science. 2014 Apr 18;344(6181):235. doi: 10.1126/science.1254664.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉George F. Gao is director of the CAS Key Laboratory of Pathogenic Microbiology and Immunology at the Institute for Microbiology of the Chinese Academy of Sciences, Beijing; vice president of the Beijing Institutes of Life Science, Beijing; president of the Chinese Society for Virology, Beijing; and deputy director general of the Chinese Center for Disease Control and Prevention, Beijing.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24744345" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; China/epidemiology ; *Commerce ; Humans ; *Influenza A Virus, H7N9 Subtype/genetics/isolation & purification ; *Influenza A virus/genetics/isolation & purification ; Influenza in Birds/*epidemiology/transmission ; Influenza, Human/epidemiology/*prevention & control/*transmission/virology ; *Poultry/virology
    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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  • 7
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    American Association for the Advancement of Science (AAAS)
    In: Science
    Publication Date: 2018-12-21
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
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