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    1. Developmental Biology
    2. Immunology and Inflammation

    T cell self-reactivity during thymic development dictates the timing of positive selection

    Lydia K Lutes et al.
    Developing T cells whose TCRs have relatively low reactivity experience very brief TCR signaling events, experience delayed positive selection, and retaina preselection gene expression signature as they mature.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    WNT signaling memory is required for ACTIVIN to function as a morphogen in human gastruloids

    Anna Yoney et al.
    The requirement for WNT signaling in mesendoderm differentiation is temporally separate from that of ACTIVIN signaling and acts to switch the output of ACTIVIN/SMAD2 from pluripotency maintenance to mesendoderm patterning.
    1. Cancer Biology

    STRIPAK directs PP2A activity toward MAP4K4 to promote oncogenic transformation of human cells

    Jong Wook Kim et al.
    ST recruitment of STRIPAK facilitates PP2A-mediated dephosphorylation of MAP4K4 and induces cell transformation highlighting that STRIPAK complex plays a key role in defining PP2A specificity and activity.
    1. Neuroscience

    Brain-wide mapping of neural activity controlling zebrafish exploratory locomotion

    Timothy W Dunn et al.
    Whole-brain activity imaging in larval zebrafish reveals brain regions that influence patterns of spontaneous movement to increase local exploration efficiency.
    1. Neuroscience

    PDF neuron firing phase-shifts key circadian activity neurons in Drosophila

    Fang Guo et al.
    A few circadian ‘evening’ neurons within the Drosophila brain play a key role in driving activity as well as keeping time, whereas the well-known PDF-containing morning cells are likely involved in integrating and transmitting light information.
    1. Neuroscience

    CA1 cell activity sequences emerge after reorganization of network correlation structure during associative learning

    Mehrab N Modi et al.
    As mice learn to associate events separated in time, neurons within the CA1 region of the hippocampus progressively reorganize their firing patterns, leading to a relay of cellular activity that bridges the two events.
    1. Neuroscience

    Synaptic up-scaling preserves motor circuit output after chronic, natural inactivity

    Joseph M Santin et al.
    Synaptic scaling maintains motor output from the respiratory network of bullfrogs after months of inactivity in the winter, providing evidence for homeostatic plasticity in response to large ecologically relevant perturbations in neuronal activity.
    1. Neuroscience

    Adaptation of spontaneous activity in the developing visual cortex

    Marina E Wosniack et al.
    To generate stable and robust connectivity refinements, the amplitude of spontaneous activity events in the developing visual cortex adapts to the recent history of cortical activation.
    1. Developmental Biology
    2. Neuroscience

    Activity-dependent modulation of synapse-regulating genes in astrocytes

    Isabella Farhy-Tselnicker et al.
    RNA sequencing and genetic mouse models reveal that transcriptional changes to astrocytes in the developing cortex are not intrinsic but influenced by their environment and determine that expression of astrocyte synapse-regulating genes and neuronal synaptogenesis is modulated by ongoing astrocyte-neuron communication.
    1. Neuroscience

    Synchronous activity patterns in the dentate gyrus during immobility

    Martin Pofahl et al.
    Two-photon in vivo calcium imaging reveals short time-scale, synchronous and sparse population activity in dentate gyrus that replays place-related information, and is important for formation of dentate-dependent spatial memory.