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    1. Cell Biology

    Distinct insulin granule subpopulations implicated in the secretory pathology of diabetes types 1 and 2

    Alex J B Kreutzberger et al.
    Insulin secreting cells harbor distinct subpopulations of insulin granules and loss of one or the other correlates strongly with secretory deficiencies characterizing type-1 or type-2 diabetes.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Intracellular complexities of acquiring a new enzymatic function revealed by mass-randomisation of active-site residues

    Kelsi R Hall et al.
    Evolving E. coli NfsA for enhanced chloramphenicol detoxification in the native host environment shows that eliminating substrate competition can occur rapidly, and be key to evolving a new enzymatic function.
    1. Cell Biology

    Reduction of elevated proton leak rejuvenates mitochondria in the aged cardiomyocyte

    Huiliang Zhang et al.
    The primary respiratory defect seen in aged cardiomyocytes is an elevated proton leak mediated by ANT1, and this is prevented by treatment with SS-31 (elamipretide).
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    A lung-on-chip model of early Mycobacterium tuberculosis infection reveals an essential role for alveolar epithelial cells in controlling bacterial growth

    Vivek V Thacker et al.
    Time-lapse imaging and the modular recreation of host physiology reveal that alveolar epithelial cells, potential permissive infection sites for Mycobacterium tuberculosis, can restrict early bacterial growth via surfactant secretion.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Spreading of a mycobacterial cell-surface lipid into host epithelial membranes promotes infectivity

    CJ Cambier et al.
    Applying bioorthogonal chemistry to the zebrafish/Mycobacterium marinum model of tuberculosis reveals that the virulence lipid PDIM must spread into epithelial cells in order for mycobacteria to establish infection.
    1. Cell Biology

    CB1R regulates soluble leptin receptor levels via CHOP, contributing to hepatic leptin resistance

    Adi Drori et al.
    The hepatic endocannabinoid/CB1R system controls the soluble leptin receptor’s expression and/or subsequent release by Trib3-induced regulation of C/EBP homologous protein levels in hepatocytes to affect leptin signaling in the liver.
    1. Immunology and Inflammation

    Systemic hypoxia inhibits T cell response by limiting mitobiogenesis via matrix substrate-level phosphorylation arrest

    Amijai Saragovi et al.
    Systemic hypoxia model reveals the detrimental effect of hypoxia on mitochondrial biogenesis in activated T-cells and points at a new approach for improving viral resistance in patients with respiratory diseases.
    1. Genetics and Genomics
    2. Neuroscience

    Cell non-autonomous regulation of health and longevity

    Hillary A Miller et al.
    Modulation of the aging process through cell signaling represents a recent and exciting area of study with the potential for development of therapeutics to extend human health.
    1. Computational and Systems Biology

    Evolved bacterial resistance against fluoropyrimidines can lower chemotherapy impact in the Caenorhabditis elegans host

    Brittany Rosener et al.
    Bacterial evolutionary adaptation to two chemotherapy drugs can lead to changes in bacterial metabolism and impact drug toxicity in a worm host.
    1. Neuroscience

    Chimpanzee brain morphometry utilizing standardized MRI preprocessing and macroanatomical annotations

    Sam Vickery et al.
    Openly available structural imaging processing pipeline for chimpanzees including registration templates and macro-anatomical parcellation shows human-like cerebral aging and medial hemispheric organization.