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    1. Computational and Systems Biology
    2. Neuroscience

    Mice in a labyrinth show rapid learning, sudden insight, and efficient exploration

    Matthew Rosenberg et al.
    Mice exploring a labyrinth freely for the first time learn a complex action sequence after a handful of rewards, exhibiting a learning rate 1000-fold higher than in commonly-used paradigms.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    IP3 mediated global Ca2+ signals arise through two temporally and spatially distinct modes of Ca2+ release

    Jeffrey T Lock, Ian Parker
    Cell-wide Ca2+ signals that regulate numerous cellular functions comprise dual Ca2+ release modes through IP3 receptors, punctate transients mediated by clustered receptors and spatiotemporally diffuse release through functionally distinct receptors.
    1. Developmental Biology

    Mechanism and consequence of abnormal calcium homeostasis in Rett syndrome astrocytes

    Qiping Dong et al.
    Increased spontaneous calcium activity in Rett syndrome astrocytes is a key cell-autonomous phenotype that affects synaptic function and network activity.
    1. Structural Biology and Molecular Biophysics
    2. Computational and Systems Biology

    Pi-Pi contacts are an overlooked protein feature relevant to phase separation

    Robert McCoy Vernon et al.
    Statistics on the frequencies of pi interactions in folded protein structures enable successful prediction of intrinsically disordered protein phase separation, with clear implications for a physical understanding of cellular organization.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Epistasis and entrenchment of drug resistance in HIV-1 subtype B

    Avik Biswas et al.
    Drug resistance in HIV is the result of mutations, which affect fitness depending on epistatic interactions with the entire sequence background that varies within and between patient populations.
    1. Neuroscience

    miR-9 regulates basal ganglia-dependent developmental vocal learning and adult vocal performance in songbirds

    Zhimin Shi et al.
    Gene manipulation combined with behavior analysis reveals a role of miR-9 in modulating basal-ganglia-dependent developmental vocal learning and adult vocal performance via regulating the FOXP1/FOXP2 gene network and dopamine signaling in songbirds.
    1. Neuroscience

    Aquaporin-4-dependent glymphatic solute transport in the rodent brain

    Humberto Mestre et al.
    An international collaboration between five independent research groups replicates findings confirming the importance of aquaporin-4 in glymphatic solute transport using five different mouse knockout lines.
    1. Microbiology and Infectious Disease

    Longitudinal analysis of Plasmodium sporozoite motility in the dermis reveals component of blood vessel recognition

    Christine S Hopp et al.
    Malaria parasites enter the host via the skin, where they are inoculated by an infected mosquito as it probes for blood: the inoculation site is a bottleneck for the parasite and the only time when the parasite is extracellular for more than a few minutes, thus possibly presenting the best opportunity for antibody-mediated inhibition of infection.
    1. Cell Biology

    Cortical regulation of cell size by a sizer cdr2p

    Kally Z Pan et al.
    It is shown that fission yeast cells sense their size by measuring their surface area through a membrane-associated sizer protein cdr2p.
    1. Neuroscience

    Co-targeting myelin inhibitors and CSPGs markedly enhances regeneration of GDNF-stimulated, but not conditioning-lesioned, sensory axons into the spinal cord

    Jinbin Zhai et al.
    Myelin-associated inhibitors and chondroitin sulfate proteoglycans are not the primary mechanism stopping sensory axons regenerating into the spinal cord, although their removal can markedly enhance regeneration when combined with an intervention that elevates axon growth capacity sufficiently robustly.