684 results found
    1. Ecology

    First bone-cracking dog coprolites provide new insight into bone consumption in Borophagus and their unique ecological niche

    Xiaoming Wang et al.
    Fossilized feces (coprolites) of extinct bone-crushing dogs, Borophagus parvus, from late Miocene (6 million years ago) of California demonstrates consumption and preservation of bones in digestive tracts and potential social hunting behavior by these predators.
    1. Chromosomes and Gene Expression
    2. Developmental Biology and Stem Cells

    G9a regulates temporal preimplantation developmental program and lineage segregation in blastocyst

    Jan J Zylicz et al.
    Loss of a maternally inherited epigenetic modifier leads to establishment of an aberrant regulatory network in preimplantation embryos, developmental delay and destabilisation of cell-fate choices.
    1. Developmental Biology and Stem Cells

    Negative regulation of G2-M by ATR (mei-41)/Chk1(Grapes) facilitates tracheoblast growth and tracheal hypertrophy in Drosophila

    Amrutha Kizhedathu et al.
    ATR/Chk1 contribute to G2 arrest in developing tracheoblasts, and arrest in G2 facilitates cellular and hypertrophic organ growth.
    1. Developmental Biology and Stem Cells

    Ripply2 recruits proteasome complex for Tbx6 degradation to define segment border during murine somitogenesis

    Wei Zhao et al.
    Inducing presomitic mesoderm (PSM)-fated ES cells clarified that Ripply2 directly interacts with Tbx6 and degrades Tbx6 in proteasome-ubiquitin pathway by recruiting the 26S proteasome, which is a PSM-specific event to define the segment border during mouse somitogenesis.
    1. Developmental Biology and Stem Cells

    Distinct myocardial lineages break atrial symmetry during cardiogenesis in zebrafish

    Almary Guerra et al.
    A discovery of two previously unknown, molecularly distinct fields of cardiac progenitors in zebrafish provides evidence for cardiac laterality prior to the emergence of cardiac septation and allows novel insights into cardiac development and disease.
    1. Evolutionary Biology

    Silencing of transposable elements may not be a major driver of regulatory evolution in primate iPSCs

    Michelle C Ward et al.
    Human and chimpanzee-induced pluripotent stem cells show limited species-specificity in transposable element silencing.
    1. Cell Biology

    Age-related islet inflammation marks the proliferative decline of pancreatic beta-cells in zebrafish

    Sharan Janjuha et al.
    During aging, the pancreatic endocrine islets undergo chronic inflammation, which is associated with a reduced capacity for self-renewal of the insulin-producing beta-cells in zebrafish.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Human LINE-1 retrotransposition requires a metastable coiled coil and a positively charged N-terminus in L1ORF1p

    Elena Khazina, Oliver Weichenrieder
    Human LINE-1 retrotransposition is found to critically depend on the rapidly evolving N-terminal sequence of the LINE-1 ORF1 protein and on the metastability of its coiled coil domain, indicating uncharacterized steps in LINE-1 retrotransposition.
    1. Developmental Biology and Stem Cells

    Specialized impulse conduction pathway in the alligator heart

    Bjarke Jensen et al.
    A specialized conduction pathway for the electrical impulse in the heart, previously thought to be associated with the endothermic mammals and birds only, is also present in the ectothermic crocodiles.
    1. Developmental Biology and Stem Cells
    2. Neuroscience

    Directional selectivity of afferent neurons in zebrafish neuromasts is regulated by Emx2 in presynaptic hair cells

    Young Rae Ji et al.
    Emx2 mediates the directional selectivity of neuromasts by regulating hair bundle orientation in hair cells, and by selecting afferent neuronal targets.

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