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  • 1
    Publication Date: 2008-05-27
    Description: Observations of individual virions in live cells have led to the characterization of their attachment, entry and intracellular transport. However, the assembly of individual virions has never been observed in real time. Insights into this process have come primarily from biochemical analyses of populations of virions or from microscopic studies of fixed infected cells. Thus, some assembly properties, such as kinetics and location, are either unknown or controversial. Here we describe quantitatively the genesis of individual virions in real time, from initiation of assembly to budding and release. We studied fluorescently tagged derivatives of Gag, the major structural component of HIV-1-which is sufficient to drive the assembly of virus-like particles-with the use of fluorescence resonance energy transfer, fluorescence recovery after photobleaching and total-internal-reflection fluorescent microscopy in living cells. Virions appeared individually at the plasma membrane, their assembly rate accelerated as Gag protein accumulated in cells, and typically 5-6 min was required to complete the assembly of a single virion. These approaches allow a previously unobserved view of the genesis of individual virions and the determination of parameters of viral assembly that are inaccessible with conventional techniques.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2708942/" 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/PMC2708942/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jouvenet, Nolwenn -- Bieniasz, Paul D -- Simon, Sanford M -- P20 GM072015/GM/NIGMS NIH HHS/ -- P20 GM072015-01/GM/NIGMS NIH HHS/ -- P20 GM072015-02/GM/NIGMS NIH HHS/ -- P20 GM072015-02S1/GM/NIGMS NIH HHS/ -- P20 GM072015-03/GM/NIGMS NIH HHS/ -- P20 GM072015-04/GM/NIGMS NIH HHS/ -- P20 GM072015-04S1/GM/NIGMS NIH HHS/ -- R01 AI089844/AI/NIAID NIH HHS/ -- R01 GM087977/GM/NIGMS NIH HHS/ -- England -- Nature. 2008 Jul 10;454(7201):236-40. doi: 10.1038/nature06998. Epub 2008 May 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Aaron Diamond AIDS Research Center, 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/18500329" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Membrane/metabolism ; Cell Survival ; Fluorescence Recovery After Photobleaching ; Fluorescence Resonance Energy Transfer ; Fluorescent Dyes/*analysis ; HIV-1/genetics/*growth & development/metabolism ; HeLa Cells ; Humans ; Kinetics ; Microscopy, Fluorescence ; Time Factors ; Virion/*growth & development/metabolism ; *Virus Replication ; gag Gene Products, Human Immunodeficiency Virus/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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  • 2
    Publication Date: 2008-01-18
    Description: Human cells possess an antiviral activity that inhibits the release of retrovirus particles, and other enveloped virus particles, and is antagonized by the HIV-1 accessory protein, Vpu. This antiviral activity can be constitutively expressed or induced by interferon-alpha, and it consists of protein-based tethers, which we term 'tetherins', that cause retention of fully formed virions on infected cell surfaces. Using deductive constraints and gene expression analyses, we identify CD317 (also called BST2 or HM1.24), a membrane protein of previously unknown function, as a tetherin. Specifically, CD317 expression correlated with, and induced, a requirement for Vpu during HIV-1 and murine leukaemia virus particle release. Furthermore, in cells where HIV-1 virion release requires Vpu expression, depletion of CD317 abolished this requirement. CD317 caused retention of virions on cell surfaces and, after endocytosis, in CD317-positive compartments. Vpu co-localized with CD317 and inhibited these effects. Inhibition of Vpu function and consequent mobilization of tetherin's antiviral activity is a potential therapeutic strategy in HIV/AIDS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Neil, Stuart J D -- Zang, Trinity -- Bieniasz, Paul D -- England -- Nature. 2008 Jan 24;451(7177):425-30. doi: 10.1038/nature06553. Epub 2008 Jan 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Aaron Diamond AIDS Research Center and Laboratory of Retrovirology, The Rockefeller University, 455 First Avenue, New York, New York 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18200009" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, CD/genetics/*metabolism ; Cell Line ; Cell Membrane/virology ; Endocytosis ; GPI-Linked Proteins ; Gene Expression Profiling ; HIV Infections/metabolism/therapy/virology ; HIV-1/*metabolism ; HeLa Cells ; Human Immunodeficiency Virus Proteins/antagonists & inhibitors/*metabolism ; Humans ; Interferon-alpha/pharmacology ; Leukemia Virus, Murine/metabolism ; Membrane Glycoproteins/*antagonists & inhibitors/genetics/*metabolism ; Mutant Proteins/genetics/metabolism ; Oligonucleotide Array Sequence Analysis ; Protein Transport ; Viral Regulatory and Accessory Proteins/antagonists & inhibitors/*metabolism ; Virion/metabolism ; Virus Replication ; gag Gene Products, Human Immunodeficiency Virus/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2013-10-15
    Description: HIV-1 replication can be inhibited by type I interferon (IFN), and the expression of a number of gene products with anti-HIV-1 activity is induced by type I IFN. However, none of the known antiretroviral proteins can account for the ability of type I IFN to inhibit early, preintegration phases of the HIV-1 replication cycle in human cells. Here, by comparing gene expression profiles in cell lines that differ in their ability to support the inhibitory action of IFN-alpha at early steps of the HIV-1 replication cycle, we identify myxovirus resistance 2 (MX2) as an interferon-induced inhibitor of HIV-1 infection. Expression of MX2 reduces permissiveness to a variety of lentiviruses, whereas depletion of MX2 using RNA interference reduces the anti-HIV-1 potency of IFN-alpha. HIV-1 reverse transcription proceeds normally in MX2-expressing cells, but 2-long terminal repeat circular forms of HIV-1 DNA are less abundant, suggesting that MX2 inhibits HIV-1 nuclear import, or destabilizes nuclear HIV-1 DNA. Consistent with this notion, mutations in the HIV-1 capsid protein that are known, or suspected, to alter the nuclear import pathways used by HIV-1 confer resistance to MX2, whereas preventing cell division increases MX2 potency. Overall, these findings indicate that MX2 is an effector of the anti-HIV-1 activity of type-I IFN, and suggest that MX2 inhibits HIV-1 infection by inhibiting capsid-dependent nuclear import of subviral complexes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3912734/" 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/PMC3912734/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kane, Melissa -- Yadav, Shalini S -- Bitzegeio, Julia -- Kutluay, Sebla B -- Zang, Trinity -- Wilson, Sam J -- Schoggins, John W -- Rice, Charles M -- Yamashita, Masahiro -- Hatziioannou, Theodora -- Bieniasz, Paul D -- AI057158/AI/NIAID NIH HHS/ -- AI091707/AI/NIAID NIH HHS/ -- DK095031/DK/NIDDK NIH HHS/ -- K01 DK095031/DK/NIDDK NIH HHS/ -- R01 AI078788/AI/NIAID NIH HHS/ -- R01 AI091707/AI/NIAID NIH HHS/ -- R01 AI100720/AI/NIAID NIH HHS/ -- R01AI078788/AI/NIAID NIH HHS/ -- R01AI100720/AI/NIAID NIH HHS/ -- R37 AI064003/AI/NIAID NIH HHS/ -- R37AI64003/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Oct 24;502(7472):563-6. doi: 10.1038/nature12653. Epub 2013 Oct 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Aaron Diamond AIDS Research Center, New York, New York 10016, USA [2] Laboratory of Retrovirology, 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/24121441" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Capsid/metabolism ; Cell Division ; Cell Line ; Cell Nucleus/metabolism/virology ; Cells, Cultured ; HIV Infections/genetics/immunology/metabolism/*prevention & control ; HIV-1/immunology/*physiology ; Humans ; Interferon-alpha/*immunology ; Mutant Proteins/genetics/metabolism ; Myxovirus Resistance Proteins/genetics/*metabolism ; RNA Interference ; Reverse Transcription ; Transcriptome ; Virus Replication
    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: 2012-10-30
    Description: Human antibodies to human immunodeficiency virus-1 (HIV-1) can neutralize a broad range of viral isolates in vitro and protect non-human primates against infection. Previous work showed that antibodies exert selective pressure on the virus but escape variants emerge within a short period of time. However, these experiments were performed before the recent discovery of more potent anti-HIV-1 antibodies and their improvement by structure-based design. Here we re-examine passive antibody transfer as a therapeutic modality in HIV-1-infected humanized mice. Although HIV-1 can escape from antibody monotherapy, combinations of broadly neutralizing antibodies can effectively control HIV-1 infection and suppress viral load to levels below detection. Moreover, in contrast to antiretroviral therapy, the longer half-life of antibodies led to control of viraemia for an average of 60 days after cessation of therapy. Thus, combinations of potent monoclonal antibodies can effectively control HIV-1 replication in humanized mice, and should be re-examined as a therapeutic modality in HIV-1-infected individuals.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3809838/" 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/PMC3809838/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klein, Florian -- Halper-Stromberg, Ariel -- Horwitz, Joshua A -- Gruell, Henning -- Scheid, Johannes F -- Bournazos, Stylianos -- Mouquet, Hugo -- Spatz, Linda A -- Diskin, Ron -- Abadir, Alexander -- Zang, Trinity -- Dorner, Marcus -- Billerbeck, Eva -- Labitt, Rachael N -- Gaebler, Christian -- Marcovecchio, Paola M -- Incesu, Reha-Baris -- Eisenreich, Thomas R -- Bieniasz, Paul D -- Seaman, Michael S -- Bjorkman, Pamela J -- Ravetch, Jeffrey V -- Ploss, Alexander -- Nussenzweig, Michel C -- 1UM1AI100663/AI/NIAID NIH HHS/ -- AI081677/AI/NIAID NIH HHS/ -- P01 AI081677/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Dec 6;492(7427):118-22. doi: 10.1038/nature11604. Epub 2012 Oct 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunology, 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/23103874" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/immunology/therapeutic use ; Antibodies, Neutralizing/*immunology/*therapeutic use ; Antibody Specificity/immunology ; Disease Models, Animal ; HIV Antibodies/*immunology/*therapeutic use ; HIV Infections/*drug therapy/*immunology/virology ; HIV-1/genetics/growth & development/immunology/isolation & purification ; Half-Life ; Humans ; Immunization, Passive ; Mice ; Mice, Inbred NOD ; Time Factors ; Viral Load/drug effects
    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: 2006-10-07
    Description: Because HIV-1 does not infect most nonhuman primates, animal modeling of human HIV infection and AIDS has primarily consisted of experimentally infecting macaques with related simian immunodeficiency viruses (SIVMAC). However, the usefulness of such models is limited by the substantial divergence between SIVMAC and HIV-1. We derived an HIV-1-based virus that includes only small portions of SIVMAC yet replicates robustly in both transformed and primary rhesus macaque T cells. Derivation of simian-tropic HIV-1 (stHIV-1) has important implications for understanding primate lentivirus zoonosis and should allow the development of improved animal models for studies of AIDS and the evaluation of vaccines and treatments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hatziioannou, Theodora -- Princiotta, Michael -- Piatak, Michael Jr -- Yuan, Fang -- Zhang, Fengwen -- Lifson, Jeffrey D -- Bieniasz, Paul D -- New York, N.Y. -- Science. 2006 Oct 6;314(5796):95.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Aaron Diamond AIDS Research Center and Rockefeller University, 455 First Avenue, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17023652" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Capsid Proteins/genetics ; Cell Line ; Cloning, Molecular ; Cytopathogenic Effect, Viral ; Disease Models, Animal ; Genes, vif ; HIV Infections ; HIV-1/*genetics/*physiology ; Humans ; Lymphocytes/virology ; Macaca mulatta ; Recombination, Genetic ; Simian Immunodeficiency Virus/*genetics ; T-Lymphocytes/*virology ; Virus Replication
    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
    Publication Date: 2014-06-21
    Description: Primate lentiviruses exhibit narrow host tropism, reducing the occurrence of zoonoses but also impairing the development of optimal animal models of AIDS. To delineate the factors limiting cross-species HIV-1 transmission, we passaged a modified HIV-1 in pigtailed macaques that were transiently depleted of CD8(+) cells during acute infection. During adaptation over four passages in macaques, HIV-1 acquired the ability to antagonize the macaque restriction factor tetherin, replicated at progressively higher levels, and ultimately caused marked CD4(+) T cell depletion and AIDS-defining conditions. Transient treatment with an antibody to CD8 during acute HIV-1 infection caused rapid progression to AIDS, whereas untreated animals exhibited an elite controller phenotype. Thus, an adapted HIV-1 can cause AIDS in macaques, and stark differences in outcome can be determined by immunological perturbations during early infection.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4266393/" 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/PMC4266393/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hatziioannou, Theodora -- Del Prete, Gregory Q -- Keele, Brandon F -- Estes, Jacob D -- McNatt, Matthew W -- Bitzegeio, Julia -- Raymond, Alice -- Rodriguez, Anthony -- Schmidt, Fabian -- Mac Trubey, C -- Smedley, Jeremy -- Piatak, Michael Jr -- KewalRamani, Vineet N -- Lifson, Jeffrey D -- Bieniasz, Paul D -- HHSN261200800001E/PHS HHS/ -- R01 AI050111/AI/NIAID NIH HHS/ -- R01 AI078788/AI/NIAID NIH HHS/ -- R01AI078788/AI/NIAID NIH HHS/ -- R01AI50111/AI/NIAID NIH HHS/ -- R37 AI064003/AI/NIAID NIH HHS/ -- R37AI64003/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2014 Jun 20;344(6190):1401-5. doi: 10.1126/science.1250761.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Aaron Diamond AIDS Research Center, 455 First Avenue, New York, NY 10016, USA. thatziio@adarc.org vineet.kewalramani@nih.gov lifsonj@mail.nih.gov pbienias@adarc.org. ; AIDS and Cancer Virus Program, Leidos Biomedical Research, Frederick National Laboratory, Frederick, MD 21702, USA. ; Aaron Diamond AIDS Research Center, 455 First Avenue, New York, NY 10016, USA. Laboratory of Retrovirology, The Rockefeller University, 455 First Avenue, New York, NY 10016, USA. ; Aaron Diamond AIDS Research Center, 455 First Avenue, New York, NY 10016, USA. ; Laboratory Animal Sciences Program, Leidos Biomedical Research, Frederick National Laboratory, Frederick, MD 21702, USA. ; HIV Drug Resistance Program, National Cancer Institute, Frederick, MD 21702, USA. thatziio@adarc.org vineet.kewalramani@nih.gov lifsonj@mail.nih.gov pbienias@adarc.org. ; AIDS and Cancer Virus Program, Leidos Biomedical Research, Frederick National Laboratory, Frederick, MD 21702, USA. thatziio@adarc.org vineet.kewalramani@nih.gov lifsonj@mail.nih.gov pbienias@adarc.org. ; Aaron Diamond AIDS Research Center, 455 First Avenue, New York, NY 10016, USA. Laboratory of Retrovirology, The Rockefeller University, 455 First Avenue, New York, NY 10016, USA. Howard Hughes Medical Institute, 455 First Avenue, New York, NY 10016, USA. thatziio@adarc.org vineet.kewalramani@nih.gov lifsonj@mail.nih.gov pbienias@adarc.org.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24948736" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/immunology/transmission/*virology ; Amino Acid Sequence ; Animals ; Antigens, CD8/immunology ; CD4-Positive T-Lymphocytes/immunology ; *Disease Models, Animal ; HIV-1/genetics/*physiology ; Host-Pathogen Interactions/*immunology ; Human Immunodeficiency Virus Proteins/chemistry/genetics/metabolism ; Lymphocyte Depletion ; Macaca nemestrina/immunology/*virology ; Molecular Sequence Data ; Protein Structure, Tertiary ; Viral Regulatory and Accessory Proteins/chemistry/genetics/metabolism ; Virus Replication
    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
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 375 (1995), S. 637-637 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Infants born to HIV-infected mothers acquire maternal antibody trans-placentally, rendering the interpretation of serological assays difficult. Secure diagnosis of perinatal infection should include investigation both of a maternal sample and of two or more infant ...
    Type of Medium: Electronic Resource
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  • 8
    Publication Date: 2014-08-06
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 9
  • 10
    Publication Date: 2004-07-12
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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