50 results found
    1. Chromosomes and Gene Expression

    Reporter-ChIP-nexus reveals strong contribution of the Drosophila initiator sequence to RNA polymerase pausing

    Wanqing Shao et al.
    Reporter-ChIP-nexus captures paused Pol II on transfected plasmids and shows that pausing stability is influenced by core promoter sequences, especially by the initiator with a G at +2 position.
    1. Neuroscience

    MagC, magnetic collection of ultrathin sections for volumetric correlative light and electron microscopy

    Thomas Templier
    The augmentation of resin-embedded sample blocks with magnetic resin allows remote actuation of ultrathin sections and deposition at high packing density onto silicon wafers for correlative light and electron microscopy.
    1. Neuroscience

    Dynamic behavior of the locus coeruleus during arousal-related memory processing in a multi-modal 7T fMRI paradigm

    Heidi IL Jacobs et al.
    By combining ultra-high-field imaging with physiological and saliva measures it is established that interactions between locus coeruleus, hippocampus and amygdala vary along emotional memory stages, putatively reflecting distinct cognitive states.
    1. Cell Biology
    2. Neuroscience

    Frontotemporal dementia mutant Tau promotes aberrant Fyn nanoclustering in hippocampal dendritic spines

    Pranesh Padmanabhan et al.
    Super-resolution imaging reveals that the microtubule-associated protein Tau regulates the Fyn kinase organisation in dendrites, and that the frontotemporal dementia mutant Tau promotes aberrant Fyn clustering, potentially leading to synaptic dysfunction.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Eukaryotic translation initiation factor 3 plays distinct roles at the mRNA entry and exit channels of the ribosomal preinitiation complex

    Colin Echeverría Aitken et al.
    Eukaryotic translation initiation factor 3 (eIF3) is required to stabilize the binding of mRNA at the exit channel of the small ribosomal subunit and acts at the entry channel to accelerate mRNA recruitment to the translation preinitiation complex.
    1. Chromosomes and Gene Expression

    HIV Tat controls RNA Polymerase II and the epigenetic landscape to transcriptionally reprogram target immune cells

    Jonathan E Reeder et al.
    Tat uses unexpected regulatory mechanisms to reprogram target immune cells to promote viral replication and rewire pathways beneficial for HIV.
    1. Cancer Biology
    2. Immunology and Inflammation

    Tumor initiating cells induce Cxcr4-mediated infiltration of pro-tumoral macrophages into the brain

    Kelda Chia et al.
    Pre-neoplastic cells in the brain release SDF1, which mediates an immediate infiltration of macrophages that differentiate into microglia-like cells and promote proliferation of pre-neoplastic cells.
    1. Cell Biology

    Serotonin signaling by maternal neurons upon stress ensures progeny survival

    Srijit Das et al.
    Neuronal serotonin release tunes transcription response times of Caenorhabditis elegans germ cells to promote the survival and stress resistance of future offspring.
    1. Developmental Biology

    Cilia-mediated Hedgehog signaling controls form and function in the mammalian larynx

    Jacqueline M Tabler et al.
    Genetic studies in mice reveal the molecular and embryological mechanisms of vocal fold development and function, thereby informing our understanding of vocal communication and congenital voice defects.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Host-selected mutations converging on a global regulator drive an adaptive leap towards symbiosis in bacteria

    M Sabrina Pankey et al.
    Selective forces imposed by the squid animal host drive rapid adaptation of non-native Vibrio fischeri bacteria through convergent mutations of large effect, unmasking preexisting coordinated regulation of symbiosis.

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