Agricultural and Biological Sciences (miscellaneous)Neuroscience (miscellaneous)Biochemistry, Genetics and Molecular Biology (miscellaneous)Immunology and Microbiology (miscellaneous)
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PLOS Biology is the flagship PLOS journal in the life sciences and features works of exceptional significance, originality, and relevance in all areas of biological science and at every scale; from molecules to ecosystems, including works at the interface of other disciplines. We also welcome data-driven meta-research articles that evaluate and aim to improve the standards of research in the life sciences and beyond. We evaluate research based on the important questions it answers as well as its potential to impact an international scientific community as well as educators, policy makers, patient advocacy groups, and society more broadly.
Teresa C. Leone, John J. Lehman, Brian N. Finck, Paul Schaeffer, Adam R. Wende, Sihem Boudina, Michael Courtois, David F. Wozniak, Nandakumar Sambandam, Carlos Bernal‐Mizrachi, Zhouji Chen, John O. Holloszy, Denis M. Medeiros, Robert E. Schmidt, Jeffrey E. Saffitz, E. Dale Abel, Clay F. Semenkovich, Daniel P. Kelly
Karin Lin, Gregor Bieri, Géraldine Gontier, Sören Müller, Lucas K. Smith, Cedric E. Snethlage, Charles White, Sun Kim, Saul Villeda
Proteins of the major histocompatibility complex class I (MHC I), predominantly known for antigen presentation in the immune system, have recently been shown to be necessary for developmental neural refinement and adult synaptic plasticity. However, their roles in nonneuronal cell populations in the brain remain largely unexplored. Here, we identify classical MHC I molecule H2-Kb as a negative regulator of proliferation in neural stem and progenitor cells (NSPCs). Using genetic knockout mouse models and in vivo viral-mediated RNA interference (RNAi) and overexpression, we delineate a role for H2-Kb in negatively regulating NSPC proliferation and adult hippocampal neurogenesis. Transcriptomic analysis of H2-Kb knockout NSPCs, in combination with in vitro RNAi, overexpression, and pharmacological approaches, further revealed that H2-Kb inhibits cell proliferation by dampening signaling pathways downstream of fibroblast growth factor receptor 1 (Fgfr1). These findings identify H2-Kb as a critical regulator of cell proliferation through the modulation of growth factor signaling.
Robert S. Illingworth, Alastair Kerr, Dina DeSousa, Helle F. Jørgensen, Peter Ellis, Jim Stalker, David K. Jackson, Chris M. Clee, R. W. Plumb, Jane Rogers, Sean Humphray, Tony Cox, Alan D. Irvine, Adrian Bird
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