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    1. Cell Biology

    A disassembly-driven mechanism explains F-actin-mediated chromosome transport in starfish oocytes

    Philippe Bun, Serge Dmitrieff ... Péter Lénárt
    On entry to meiosis, chromosomes scattered in the large oocyte nucleus of starfish are collected by an F-actin network, which contracts by an unexpected, myosin-independent mechanism based on local assembly and global disassembly of actin filaments.
    1. Developmental Biology
    2. Evolutionary Biology

    Functional divergence of paralogous transcription factors supported the evolution of biomineralization in echinoderms

    Jian Ming Khor, Charles A Ettensohn
    A gene duplication event has permitted the functional specialization of a homeodomain transcription factor through changes in exon-intron organization and these changes have supported the evolution of a major, phylum-level morphological novelty.
    1. Immunology and Inflammation

    IL17 factors are early regulators in the gut epithelium during inflammatory response to Vibrio in the sea urchin larva

    Katherine M Buckley, Eric Chun Hei Ho ... Jonathan P Rast
    Expression of two highly regulated subfamilies of the complex multigene family encoding IL-17 cytokines in the purple sea urchin are sequentially activated in a larval gut-associated inflammation model and modulate downstream gene expression in the gut epithelium.
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