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    1. Neuroscience

    Loss of Frataxin induces iron toxicity, sphingolipid synthesis, and Pdk1/Mef2 activation, leading to neurodegeneration

    Kuchuan Chen et al.
    In Drosophila, the loss of Frataxin causes iron accumulation in the nervous system, which in turn enhances sphingolipid synthesis and activation of PDK1 and Mef2, which leads to neurodegeneration.
    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

    Synthetic enzyme-substrate tethering obviates the Tolloid-ECM interaction during Drosophila BMP gradient formation

    Jennifer Winstanley et al.
    The in vivo activity of Tolloid during Drosophila dorsal-ventral patterning is regulated by the differential specificity of its non-catalytic domains in mediating substrate and Collagen IV interaction.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    TORC2-dependent protein kinase Ypk1 phosphorylates ceramide synthase to stimulate synthesis of complex sphingolipids

    Alexander Muir et al.
    TORC2-Ypk1 signaling upregulates flux through the sphingolipid pathway not only by increasing the supply of long-chain base precursors, but also by increasing their use in synthesizing complex sphingolipids.
    1. Developmental Biology

    The transcriptional response to tumorigenic polarity loss in Drosophila

    Brandon D Bunker et al.
    Loss of polarity in epithelial cells leads to mitogenic cytokine upregulation, via coincident activation by JNK and atypical protein kinase C (aPKC), and Polycomb derepression.
    1. Immunology and Inflammation

    Epigenetic modification of the PD-1 (Pdcd1) promoter in effector CD4+ T cells tolerized by peptide immunotherapy

    Rhoanne C McPherson et al.
    Peptide immunotherapy in mice depends upon sustained expression of co-inhibitory protein PD-1 in T cells.
    1. Cell Biology
    2. Human Biology and Medicine

    The mammalian lectin galectin-8 induces RANKL expression, osteoclastogenesis, and bone mass reduction in mice

    Yaron Vinik et al.
    The secreted sugar-binding protein galectin-8 causes osteoblasts to secrete factors that promote the differentiation of bone marrow cells into osteoclasts; targeting this protein could therefore potentially help treat diseases associated with excessive bone loss.
    1. Cell Biology

    The mechanosensitive Piezo1 channel is required for bone formation

    Weijia Sun et al.
    Piezo1 functions as a key mechanotransducer for conferring mechanosensitivity to osteoblasts and determining mechanical-load-dependent bone formation, and represents a novel therapeutic target for treating osteoporosis or unloading-induced severe bone loss.
    1. Biochemistry and Chemical Biology
    2. Plant Biology

    Two bifunctional inositol pyrophosphate kinases/phosphatases control plant phosphate homeostasis

    Jinsheng Zhu et al.
    Genetic and biochemical analysis of two enzymes reveals that inositol pyrophosphate signaling molecules allow plants to sense and regulate cellular phosphate levels, and to take up more phosphate when needed.
    1. Developmental Biology

    Mamo decodes hierarchical temporal gradients into terminal neuronal fate

    Ling-Yu Liu et al.
    Neuronal diversity is expanded by a temporal fating paradigm utilizing hierarchical gene regulation.