407 results found
    1. Neuroscience

    SIR-2.1 integrates metabolic homeostasis with the reproductive neuromuscular excitability in early aging male Caenorhabditis elegans

    Xiaoyan Guo, L René García
    A protein called SIR-2.1 helps to protect worms from the effects of aging by regulating metabolic processes that would otherwise generate damaging reactive oxygen species.
    1. Neuroscience

    Reactive oxygen species regulate activity-dependent neuronal plasticity in Drosophila

    Matthew CW Oswald et al.
    Reactive oxygen species, previously considered damaging agents linked to pathology, are required for normal neuronal plasticity, including adjustment of synaptic terminal size, maintenance of synaptic physiology and adaptive behavioural responses.
    1. Cancer Biology

    Tumor-promoting function of apoptotic caspases by an amplification loop involving ROS, macrophages and JNK in Drosophila

    Ernesto Pérez et al.
    The oncogenic RasV12 keeps cells mutant for the tumor suppressor scribble in an undead-like condition, which is required for an amplification loop that promotes tumorigenesis.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Oxidative stress induces stem cell proliferation via TRPA1/RyR-mediated Ca2+ signaling in the Drosophila midgut

    Chiwei Xu et al.
    In response to tissue damage, reactive oxygen species can be sensed by cation channels TRPA1/RyR to cause increases of cytosolic Ca2+ in intestinal stem cells, activating Ras/MAPK activity and stimulating stem cell proliferation in Drosophila.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Environmental changes in oxygen tension reveal ROS-dependent neurogenesis and regeneration in the adult newt brain

    L Shahul Hameed et al.
    Control of neural stem cells by reactive oxygen species (ROS) provides a link between systemic shifts in oxygen tension and neuronal regeneration, and suggests an evolutionary driving force for the inherent ability of newts to regenerate their brain cells.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Regeneration: Hold your breath!

    Katharina Lust, Joachim Wittbrodt
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    1. Cancer Biology

    MELK expression correlates with tumor mitotic activity but is not required for cancer growth

    Christopher J Giuliano et al.
    Cancer cells can grow in vitro and in vivo in the absence of maternal embryonic leucine zipper kinase (MELK).
    1. Immunology and Inflammation
    2. Physics of Living Systems

    Role of framework mutations and antibody flexibility in the evolution of broadly neutralizing antibodies

    Victor Ovchinnikov et al.
    Computer simulations of the evolution of broadly neutralizing antibodies against HIV suggest that non-traditional pathways involving framework mutations which lead initially to increased antibody flexibility do occur, but can be avoided by appropriate vaccine design.
    1. Cell Biology

    Heat stress promotes longevity in budding yeast by relaxing the confinement of age-promoting factors in the mother cell

    Sandro Baldi et al.
    To promote longevity under heat stress shares yeast aging factors with progeny through a down-regulation of the diffusion barrier in the membranes between the mitotic cells.
    1. Developmental Biology

    Glucose inhibits cardiac muscle maturation through nucleotide biosynthesis

    Haruko Nakano et al.
    During cardiogenesis, the major role of glucose is not the catabolic extraction of energy but the anabolic biosynthesis of nucleotides.

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