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  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. Neuroscience

    Presenilin/γ-secretase-dependent EphA3 processing mediates axon elongation through non-muscle myosin IIA

    Míriam Javier-Torrent et al.
    EphA signaling plays dual opposite roles on axon dynamics in neurons, so it inhibits and promotes axon growth through ligand binding and receptor processing, respectively.
    1. Developmental Biology
    2. Evolutionary Biology

    Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment

    Kate A Rawlinson et al.
    A new opsin receptor is light-sensitive and expressed in a unique type of photoreceptor in a flatworm that encloses over 400 sensory cilia within its cell membrane.
    1. Neuroscience

    Stereotyped transcriptomic transformation of somatosensory neurons in response to injury

    Minh Q Nguyen et al.
    Peripheral injury induces a programmed but reversible transformation of gene expression in somatosensory neurons providing a mechanism to regulate sensory input during wound healing.
    1. Structural Biology and Molecular Biophysics

    Symmetry transitions during gating of the TRPV2 ion channel in lipid membranes

    Lejla Zubcevic et al.
    Ligand-induced two-fold symmetric arrangement in TRPV2 is observed in the native-like nanodisc-reconstituted condition using cryo-electron microscopy.
    1. Microbiology and Infectious Disease

    Plasticity of Escherichia coli cell wall metabolism promotes fitness and antibiotic resistance across environmental conditions

    Elizabeth A Mueller et al.
    Environmental specialization of bacterial cell wall synthases influences intrinsic resistance to cell wall active antibiotics.
    1. Cell Biology

    Reconstruction of Par-dependent polarity in apolar cells reveals a dynamic process of cortical polarization

    Kalyn Kono et al.
    Par-complex-dependent cell polarity can be cell-autonomously conferred to non-polar Drosophila S2 cells, unveiling temporal patterns toward the cortical localization of Par-complex aggregates that include a meshwork containing unit segments.
    1. Cancer Biology

    A nonrandomized cohort and a randomized study of local control of large hepatocarcinoma by targeting intratumoral lactic acidosis

    Ming Chao et al.
    Local infusion of bicarbonate into hepatocellular carcinoma markedly enhances local tumor control by transarterial chemoembolization.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Demographic reconstruction from ancient DNA supports rapid extinction of the great auk

    Jessica E Thomas et al.
    Reconstruction of great auk population dynamics suggests that hunting pressure alone could have been responsible for their extinction, demonstrating that even abundant, widespread species can be vulnerable to intense exploitation.
    1. Developmental Biology
    2. Evolutionary Biology

    An ancestral apical brain region contributes to the central complex under the control of foxQ2 in the beetle Tribolium

    Bicheng He et al.
    An ancestral apical brain center contributed to the evolution of the insect central complex requiring foxQ2, which is essential for the development of midline structures of the insect brain.