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    1. Immunology and Inflammation

    IgE-mediated mast cell activation promotes inflammation and cartilage destruction in osteoarthritis

    Qian Wang, Christin M Lepus ... William H Robinson
    Osteoarthritis pathogenesis is driven by IgE-mediated mast cell activation.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Microstructural differences in the osteochondral unit of terrestrial and aquatic mammals

    Irina AD Mancini, Riccardo Levato ... Jos Malda
    Analysis of the osteochondral unit of aquatic mammals reveals a distinctly different tissue structure, lacking the arcade-like collagen fiber organization, a calcified cartilage layer and a dense subchondral bone plate, typically seen in osteochondral tissue of terrestrial mammals.
    1. Developmental Biology

    A minimally sufficient model for rib proximal-distal patterning based on genetic analysis and agent-based simulations

    Jennifer L Fogel, Daniel L Lakeland ... Francesca V Mariani
    Specification and expansion during rib development is explained by Agent-Based Modeling while respecting the locality of decision-making that occurs as millions of cells coordinate their behavior to form and refine spatial pattern.
    1. Cell Biology

    BMP signaling maintains auricular chondrocyte identity and prevents microtia development by inhibiting protein kinase A

    Ruichen Yang, Hongshang Chu ... Baojie Li
    Uncovering a new function of BMP signaling and enhancing our comprehension of the pathogenesis of microtia.
    1. Ecology

    The return to water in ancestral Xenopus was accompanied by a novel mechanism for producing and shaping vocal signals

    Ursula Kwong-Brown, Martha L Tobias ... Darcy B Kelley
    When ancestral Xenopus returned to water ~170mya, they evolved a new method for producing courtship calls underwater without airflow, using vibrations that also preserve essential acoustic information on species identity.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Pneumococcal genetic variability in age-dependent bacterial carriage

    Philip HC Kremer, Bart Ferwerda ... John A Lees
    Future vaccination strategies in pneumococcal disease should target specific bacterial serotypes for different host age groups.
    1. Immunology and Inflammation

    Inhibition of miR-199b-5p reduces pathological alterations in osteoarthritis by potentially targeting Fzd6 and Gcnt2

    Tong Feng, Qi Zhang ... Qiao-Feng Wu
    Serum exosomal sequencing combined with cell and animal experiments indicate that miRNA-199b-5p is a novel miRNA associated with osteoarthritis (OA) and can modulate the onset and progression of the disease.
    1. Stem Cells and Regenerative Medicine

    Long non-coding RNA GRASLND enhances chondrogenesis via suppression of the interferon type II signaling pathway

    Nguyen PT Huynh, Catherine C Gloss ... Farshid Guilak
    Bioinformatic analysis of mesenchymal stem cell chondrogenesis identified a novel long noncoding RNA, GRASLND, which suppresses interferon signaling and enhances chondrogenesis.
    1. Stem Cells and Regenerative Medicine

    Skeletal dysplasia-causing TRPV4 mutations suppress the hypertrophic differentiation of human iPSC-derived chondrocytes

    Amanda R Dicks, Grigory I Maksaev ... Farshid Guilak
    Chondrocytes derived from induced pluripotent stem cells with the dysplasia-causing TRPV4 mutations, V620I and T89I mutation, were resistant to BMP4-induced hypertrophy, suggesting a mechanism underlying the effects of TRPV4 dysfunction on the severity of skeletal dysplasia.
    1. Evolutionary Biology
    2. Physics of Living Systems

    Elastic instability during branchial ectoderm development causes folding of the Chlamydosaurus erectile frill

    Sophie A Montandon, Anamarija Fofonjka, Michel C Milinkovitch
    Robust wrinkling pattern of the frilled dragon’s spectacular erectile ruff emerges from an elastic instability during homogeneous growth of the embryonic neck fold frustrated by its attachment to adjacent tissues.