258 results found
    1. Neuroscience

    Functional limb muscle innervation prior to cholinergic transmitter specification during early metamorphosis in Xenopus

    Francois M Lambert et al.
    Molecular labeling, electrophysiology and calcium imaging have revealed a novel switching of neurotransmitter at the frog neuromuscular junction where motoneurons transiently release glutamate before acetylcholine at synapses on developing hindlimb muscles at the onset of metamorphosis.
    1. Human Biology and Medicine

    Blockade of glucagon signaling prevents or reverses diabetes onset only if residual β-cells persist

    Nicolas Damond et al.
    Contrary to previous reports, a complete absence of glucagon signaling is not sufficient to prevent diabetes after near-total β-cell loss.
    1. Immunology and Inflammation

    TGFβ-dependent expression of PD-1 and PD-L1 controls CD8+ T cell anergy in transplant tolerance

    Marije Baas et al.
    The interplay between the cytokine TGFβ and the PD-1/PD-L1 pathway promotes CD8+ T cell anergy and tolerance towards transplanted tissues.
    1. Cell Biology
    2. Developmental Biology

    First quantitative high-throughput screen in zebrafish identifies novel pathways for increasing pancreatic β-cell mass

    Guangliang Wang et al.
    A novel high-throughput, whole organism chemical screening platform was used to identify existing drugs that increase pancreatic beta-cell mass in zebrafish, implicating unique roles for the NF-κB and serotonergic signaling pathways in regulating pancreatic biology.
    1. Cell Biology

    Adiponectin is essential for lipid homeostasis and survival under insulin deficiency and promotes β-cell regeneration

    Risheng Ye et al.
    Under insulinopenic conditions, the hormone adiponectin is essential for lipid uptake specifically in subcutaneous white adipose tissue, and is sufficient to ameliorate islet lipotoxicity.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Drought adaptation in Arabidopsis thaliana by extensive genetic loss-of-function

    J Grey Monroe et al.
    Gene knockouts provide valuable genetic fuel for climate adaptation in nature.
    1. Neuroscience

    Elevated synaptic vesicle release probability in synaptophysin/gyrin family quadruple knockouts

    Mathan K Raja et al.
    Synaptophysins and gyrins dampen synaptic strength selectively at low frequencies, hinting that synaptic transmission may play a frequency filtering role in biological computation that is more general than currently envisioned.
    1. Cell Biology
    2. Developmental Biology

    Thrombospondin-4 controls matrix assembly during development and repair of myotendinous junctions

    Arul Subramanian, Thomas F Schilling
    Functional attachments between muscles and tendons require pentameric Thrombospondin-4, revealing novel roles both as an integrin ligand and extracellular matrix scaffold.
    1. Genetics and Genomics

    Firefly genomes illuminate parallel origins of bioluminescence in beetles

    Timothy R Fallon et al.
    The first genomic view of beetle luciferase evolution indicates evolutionary independence of luciferase between fireflies and click-beetles, and provide valuable datasets which will accelerate the discovery of new biotechnological tools.
    1. Human Biology and Medicine

    Directing visceral white adipocyte precursors to a thermogenic adipocyte fate improves insulin sensitivity in obese mice

    Chelsea Hepler et al.
    Genetic inactivation of the transcription factor, Zfp423, in visceral white adipocyte precursors leads to the formation of thermogenic adipocytes in visceral fat depots and improves insulin sensitivity in obese mice.

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