592 results found
  1. Episode 3: August 2013

    Episode 3: August 2013

    In this episode we hear about the cocktail party effect, the role of psuedogene RNA in the immune response, the genetic origins of a common form of blindness, the flu vaccine, and the origins of schistosomiasis.
    1. Ecology

    Ant colonies maintain social homeostasis in the face of decreased density

    Andreas P Modlmeier et al.
    Organizational resilience allows ant colonies to retain high interaction rates in the face of decreased density by altering their spatial and social dynamics.
    1. Neuroscience

    Optogenetically induced low-frequency correlations impair perception

    Anirvan Nandy et al.
    Low-frequency correlations among neurons in monkey visual area V4 impair the animal's ability to perform an attention-demanding task, suggesting a causal role of these fluctuations in perception.
    1. Neuroscience

    Ventrolateral periaqueductal gray neurons prioritize threat probability over fear output

    Kristina M Wright, Michael A McDannald
    Single-unit activity in the ventrolateral periaqueductal gray, a brain region implicated in organizing fear output, is found to reflect threat probability, a more versatile threat signal.
    1. Neuroscience

    Current and future goals are represented in opposite patterns in object-selective cortex

    Anouk Mariette van Loon et al.
    Multivoxel pattern of fMRI data reveals how the brain distinguishes between relevant and irrelevant representations as representations adapt to the order in which they are required in multiple task sequences.
    1. Physics of Living Systems

    Downsizing the molecular spring of the giant protein titin reveals that skeletal muscle titin determines passive stiffness and drives longitudinal hypertrophy

    Ambjorn Brynnel et al.
    Genetically altering the size of the molecular spring element in the giant protein titin established that titin determines the stiffness of skeletal muscle and the number of sarcomeres in series.
    1. Biochemistry and Chemical Biology
    2. Developmental Biology

    The major β-catenin/E-cadherin junctional binding site is a primary molecular mechano-transductor of differentiation in vivo

    Jens-Christian Röper et al.
    The primary molecular mechanosensor involved in a physiological process of mechanically induced cell fate differentiation is revealed here for the first time in vivo, highly sensitive and potentially shared by all metazoan epithelia.
    1. Cell Biology

    Actin assembly ruptures the nuclear envelope by prying the lamina away from nuclear pores and nuclear membranes in starfish oocytes

    Natalia Wesolowska et al.
    Combined light and electron microscopy reveals a new function for Arp2/3-mediated actin assembly in nuclear envelope rupture, which leads to a separation of nuclear membranes and pores from the lamina.
    1. Cell Biology
    2. Computational and Systems Biology

    A regulatory microRNA network controls endothelial cell phenotypic switch during sprouting angiogenesis

    Stefania Rosano et al.
    Coordinated microRNAs activity induced by VEGF represses cell proliferation and favors cell migration at the onset of sprouting angiogenesis in endothelial cells.
    1. Chromosomes and Gene Expression

    PLZF targets developmental enhancers for activation during osteogenic differentiation of human mesenchymal stem cells

    Shuchi Agrawal Singh et al.
    A key transcription-factor for osteogenic differentiation, PLZF, acts as a transcriptional activator by binding to active developmental enhancers and facilitates mediator recruitment, but is not involved in enhancer looping.

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