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  • 1
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    Antigen-specific B-cell receptor sensitizes B cells to infection by influenza virus (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-10-22
    Description: Influenza A virus-specific B lymphocytes and the antibodies they produce protect against infection. However, the outcome of interactions between an influenza haemagglutinin-specific B cell via its receptor (BCR) and virus is unclear. Through somatic cell nuclear transfer we generated mice that harbour B cells with a BCR specific for the haemagglutinin of influenza A/WSN/33 virus (FluBI mice). Their B cells secrete an immunoglobulin gamma 2b that neutralizes infectious virus. Whereas B cells from FluBI and control mice bind equivalent amounts of virus through interaction of haemagglutinin with surface-disposed sialic acids, the A/WSN/33 virus infects only the haemagglutinin-specific B cells. Mere binding of virus is not sufficient for infection of B cells: this requires interactions of the BCR with haemagglutinin, causing both disruption of antibody secretion and FluBI B-cell death within 18 h. In mice infected with A/WSN/33, lung-resident FluBI B cells are infected by the virus, thus delaying the onset of protective antibody release into the lungs, whereas FluBI cells in the draining lymph node are not infected and proliferate. We propose that influenza targets and kills influenza-specific B cells in the lung, thus allowing the virus to gain purchase before the initiation of an effective adaptive response.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3863936/" 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/PMC3863936/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dougan, Stephanie K -- Ashour, Joseph -- Karssemeijer, Roos A -- Popp, Maximilian W -- Avalos, Ana M -- Barisa, Marta -- Altenburg, Arwen F -- Ingram, Jessica R -- Cragnolini, Juan Jose -- Guo, Chunguang -- Alt, Frederick W -- Jaenisch, Rudolf -- Ploegh, Hidde L -- DP1 GM106409/GM/NIGMS NIH HHS/ -- R01 AI033456/AI/NIAID NIH HHS/ -- R01 AI087879/AI/NIAID NIH HHS/ -- R01 GM100518/GM/NIGMS NIH HHS/ -- R01 HD045022/HD/NICHD NIH HHS/ -- R37 HD045022/HD/NICHD NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Nov 21;503(7476):406-9. doi: 10.1038/nature12637. Epub 2013 Oct 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, Massachusetts 02142, USA [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24141948" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/immunology/metabolism ; Antibody Specificity/immunology ; B-Lymphocytes/*immunology/pathology/secretion/*virology ; Cell Death ; Female ; Hemagglutinin Glycoproteins, Influenza Virus/immunology/metabolism ; Immunoglobulin G/immunology/metabolism ; Lung/cytology/immunology/secretion/virology ; Lymph Nodes/cytology/immunology ; Male ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Neutralization Tests ; Nuclear Transfer Techniques ; Orthomyxoviridae/pathogenicity/*physiology ; Receptors, Antigen, B-Cell/*immunology/metabolism ; Virus Replication
    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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  • 2
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    Transnuclear mice with predefined T cell receptor specificities against Toxoplasma gondii obtained via SCNT (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-04-10
    Description: Mice that are transgenic for rearranged antigen-specific T cell receptors (TCRs) are essential tools to study T cell development and function. Such TCRs are usually isolated from the relevant T cells after long-term culture, often after repeated antigen stimulation, which unavoidably skews the T cell population used. Random genomic integration of the TCR alpha and beta chain and expression from nonendogenous promoters represent additional drawbacks of transgenics. Using epigenetic reprogramming via somatic cell nuclear transfer, we demonstrated that T cells with predefined specificities against Toxoplasma gondii can be used to generate mouse models that express the TCR from their endogenous loci, without experimentally introduced genetic modification. The relative ease and speed with which such transnuclear models can be obtained holds promise for the construction of other disease models.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2940321/" 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/PMC2940321/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kirak, Oktay -- Frickel, Eva-Maria -- Grotenbreg, Gijsbert M -- Suh, Heikyung -- Jaenisch, Rudolf -- Ploegh, Hidde L -- R01 GM062502/GM/NIGMS NIH HHS/ -- R01 GM062502-08/GM/NIGMS NIH HHS/ -- R01-HD045022/HD/NICHD NIH HHS/ -- R37 AI033456/AI/NIAID NIH HHS/ -- R37 AI033456-17/AI/NIAID NIH HHS/ -- R37-CA084198/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2010 Apr 9;328(5975):243-8. doi: 10.1126/science.1178590.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA. kirak@wi.mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20378817" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Protozoan/*immunology ; CD8-Positive T-Lymphocytes/immunology ; Embryonic Stem Cells ; Epitopes, T-Lymphocyte ; Female ; Genes, T-Cell Receptor alpha ; Genes, T-Cell Receptor beta ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; *Mice, Transgenic ; Molecular Sequence Data ; *Nuclear Transfer Techniques ; Protozoan Proteins/genetics/immunology ; Receptors, Antigen, T-Cell, alpha-beta/genetics/*immunology ; Toxoplasma/*immunology ; Toxoplasmosis, Animal/*immunology
    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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  • 3
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    Identification and rescue of alpha-synuclein toxicity in Parkinson patient-derived neurons (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-10-26
    Description: The induced pluripotent stem (iPS) cell field holds promise for in vitro disease modeling. However, identifying innate cellular pathologies, particularly for age-related neurodegenerative diseases, has been challenging. Here, we exploited mutation correction of iPS cells and conserved proteotoxic mechanisms from yeast to humans to discover and reverse phenotypic responses to alpha-synuclein (alphasyn), a key protein involved in Parkinson's disease (PD). We generated cortical neurons from iPS cells of patients harboring alphasyn mutations, who are at high risk of developing PD dementia. Genetic modifiers from unbiased screens in a yeast model of alphasyn toxicity led to identification of early pathogenic phenotypes in patient neurons. These included nitrosative stress, accumulation of endoplasmic reticulum (ER)-associated degradation substrates, and ER stress. A small molecule identified in a yeast screen (NAB2), and the ubiquitin ligase Nedd4 it affects, reversed pathologic phenotypes in these neurons.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4022187/" 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/PMC4022187/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chung, Chee Yeun -- Khurana, Vikram -- Auluck, Pavan K -- Tardiff, Daniel F -- Mazzulli, Joseph R -- Soldner, Frank -- Baru, Valeriya -- Lou, Yali -- Freyzon, Yelena -- Cho, Sukhee -- Mungenast, Alison E -- Muffat, Julien -- Mitalipova, Maisam -- Pluth, Michael D -- Jui, Nathan T -- Schule, Birgitt -- Lippard, Stephen J -- Tsai, Li-Huei -- Krainc, Dimitri -- Buchwald, Stephen L -- Jaenisch, Rudolf -- Lindquist, Susan -- 5 R01CA084198/CA/NCI NIH HHS/ -- K01 AG038546/AG/NIA NIH HHS/ -- P50 AG005134/AG/NIA NIH HHS/ -- R01 CA084198/CA/NCI NIH HHS/ -- R01 GM058160/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Nov 22;342(6161):983-7. doi: 10.1126/science.1245296. Epub 2013 Oct 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24158904" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzimidazoles/chemistry/*pharmacology ; Endoplasmic Reticulum Stress/drug effects ; Female ; Humans ; Induced Pluripotent Stem Cells/cytology/metabolism ; Mutation ; Neurogenesis ; Neurons/*drug effects/metabolism/pathology ; Parkinson Disease/genetics/*metabolism ; Rats ; alpha-Synuclein/genetics/*metabolism
    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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