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  • American Association for the Advancement of Science (AAAS)
  • 2010-2014  (5)
  • 1990-1994
  • 2012  (5)
  • 1
    Publication Date: 2012-01-28
    Description: During the activation of humoral immune responses, B cells acquire antigen for subsequent presentation to cognate T cells. Here we show that after mouse B cells accumulate antigen, it is maintained in a polarized distribution for extended periods in vivo. Using high-throughput imaging flow cytometry, we observed that this polarization is preserved during B cell division, promoting asymmetric antigen segregation among progeny. Antigen inheritance correlates with the ability of progeny to activate T cells: Daughter cells receiving larger antigen stores exhibit a prolonged capacity to present antigen, which renders them more effective in competing for T cell help. The generation of progeny with differential capacities for antigen presentation may have implications for somatic hypermutation and class switching during affinity maturation and as B cells commit to effector cell fates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thaunat, Olivier -- Granja, Aitor G -- Barral, Patricia -- Filby, Andrew -- Montaner, Beatriz -- Collinson, Lucy -- Martinez-Martin, Nuria -- Harwood, Naomi E -- Bruckbauer, Andreas -- Batista, Facundo D -- Cancer Research UK/United Kingdom -- New York, N.Y. -- Science. 2012 Jan 27;335(6067):475-9. doi: 10.1126/science.1214100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lymphocyte Interaction Laboratory, London Research Institute, Cancer Research UK, 44 Lincoln's Inn Fields, London, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22282815" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antigen Presentation ; Antigens/*analysis/*immunology ; B-Lymphocytes/cytology/*immunology ; Cell Division ; Cell Proliferation ; Cells, Cultured ; Coculture Techniques ; Computer Simulation ; Flow Cytometry ; *Lymphocyte Activation ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Models, Immunological ; Muramidase/analysis/immunology ; T-Lymphocytes/*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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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2012-08-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Dongbo -- Fernandez-Martinez, Alejandro -- New York, N.Y. -- Science. 2012 Aug 17;337(6096):812-3. doi: 10.1126/science.1226048.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Institute of Standards and Technology, Polymers Division, Gaithersburg, MD 20899, USA. dongbo.wang@nist.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22904005" target="_blank"〉PubMed〈/a〉
    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: 2012-06-30
    Description: Wood is a major pool of organic carbon that is highly resistant to decay, owing largely to the presence of lignin. The only organisms capable of substantial lignin decay are white rot fungi in the Agaricomycetes, which also contains non-lignin-degrading brown rot and ectomycorrhizal species. Comparative analyses of 31 fungal genomes (12 generated for this study) suggest that lignin-degrading peroxidases expanded in the lineage leading to the ancestor of the Agaricomycetes, which is reconstructed as a white rot species, and then contracted in parallel lineages leading to brown rot and mycorrhizal species. Molecular clock analyses suggest that the origin of lignin degradation might have coincided with the sharp decrease in the rate of organic carbon burial around the end of the Carboniferous period.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Floudas, Dimitrios -- Binder, Manfred -- Riley, Robert -- Barry, Kerrie -- Blanchette, Robert A -- Henrissat, Bernard -- Martinez, Angel T -- Otillar, Robert -- Spatafora, Joseph W -- Yadav, Jagjit S -- Aerts, Andrea -- Benoit, Isabelle -- Boyd, Alex -- Carlson, Alexis -- Copeland, Alex -- Coutinho, Pedro M -- de Vries, Ronald P -- Ferreira, Patricia -- Findley, Keisha -- Foster, Brian -- Gaskell, Jill -- Glotzer, Dylan -- Gorecki, Pawel -- Heitman, Joseph -- Hesse, Cedar -- Hori, Chiaki -- Igarashi, Kiyohiko -- Jurgens, Joel A -- Kallen, Nathan -- Kersten, Phil -- Kohler, Annegret -- Kues, Ursula -- Kumar, T K Arun -- Kuo, Alan -- LaButti, Kurt -- Larrondo, Luis F -- Lindquist, Erika -- Ling, Albee -- Lombard, Vincent -- Lucas, Susan -- Lundell, Taina -- Martin, Rachael -- McLaughlin, David J -- Morgenstern, Ingo -- Morin, Emanuelle -- Murat, Claude -- Nagy, Laszlo G -- Nolan, Matt -- Ohm, Robin A -- Patyshakuliyeva, Aleksandrina -- Rokas, Antonis -- Ruiz-Duenas, Francisco J -- Sabat, Grzegorz -- Salamov, Asaf -- Samejima, Masahiro -- Schmutz, Jeremy -- Slot, Jason C -- St John, Franz -- Stenlid, Jan -- Sun, Hui -- Sun, Sheng -- Syed, Khajamohiddin -- Tsang, Adrian -- Wiebenga, Ad -- Young, Darcy -- Pisabarro, Antonio -- Eastwood, Daniel C -- Martin, Francis -- Cullen, Dan -- Grigoriev, Igor V -- Hibbett, David S -- New York, N.Y. -- Science. 2012 Jun 29;336(6089):1715-9. doi: 10.1126/science.1221748.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biology Department, Clark University, Worcester, MA 01610, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22745431" target="_blank"〉PubMed〈/a〉
    Keywords: Basidiomycota/classification/*enzymology/*genetics ; Bayes Theorem ; *Evolution, Molecular ; *Genome, Fungal ; Indoles ; Lignin/*metabolism ; Peroxidases/*genetics/metabolism ; Wood/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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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2012-11-20
    Description: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3621126/" 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/PMC3621126/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, Gustavo J -- Rao, Anjana -- R01 CA042471/CA/NCI NIH HHS/ -- R01 CA42471/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2012 Nov 16;338(6109):891-2. doi: 10.1126/science.1231310.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23161983" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Humans ; Immunomodulation/*genetics ; Interferon Regulatory Factors/*metabolism ; *Regulatory Elements, Transcriptional ; Th17 Cells/*immunology ; Transcription Factor AP-1/*metabolism ; *Transcriptional Activation
    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
    Publication Date: 2012-08-11
    Description: During development of the mammalian cerebral cortex, radial glial cells (RGCs) generate layer-specific subtypes of excitatory neurons in a defined temporal sequence, in which lower-layer neurons are formed before upper-layer neurons. It has been proposed that neuronal subtype fate is determined by birthdate through progressive restriction of the neurogenic potential of a common RGC progenitor. Here, we demonstrate that the murine cerebral cortex contains RGC sublineages with distinct fate potentials. Using in vivo genetic fate mapping and in vitro clonal analysis, we identified an RGC lineage that is intrinsically specified to generate only upper-layer neurons, independently of niche and birthdate. Because upper cortical layers were expanded during primate evolution, amplification of this RGC pool may have facilitated human brain evolution.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4287277/" 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/PMC4287277/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Franco, Santos J -- Gil-Sanz, Cristina -- Martinez-Garay, Isabel -- Espinosa, Ana -- Harkins-Perry, Sarah R -- Ramos, Cynthia -- Muller, Ulrich -- MH078833/MH/NIMH NIH HHS/ -- NS046456/NS/NINDS NIH HHS/ -- NS060355/NS/NINDS NIH HHS/ -- R01 NS046456/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2012 Aug 10;337(6095):746-9. doi: 10.1126/science.1223616.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dorris Neuroscience Center and Department of Cell Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22879516" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Lineage ; Cell Proliferation ; Cells, Cultured ; Cerebral Cortex/*cytology/embryology ; Homeodomain Proteins/genetics ; Mice ; Neural Stem Cells/*cytology/physiology ; *Neurogenesis ; Neuroglia/*cytology ; Neurons/*cytology/physiology ; Recombination, Genetic
    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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