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    1. Developmental Biology
    2. Microbiology and Infectious Disease

    Bacterial colonization stimulates a complex physiological response in the immature human intestinal epithelium

    David R Hill et al.
    Contact with bacteria and subsequent hypoxia promotes functional maturation of the immature gastrointestinal tract.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Nuclear microenvironments modulate transcription from low-affinity enhancers

    Albert Tsai et al.
    Efficient transcription from low-affinity enhancers is driven by nuclear microenvironments of transcription factors.
    1. Cell Biology

    Bax and Bak function as the outer membrane component of the mitochondrial permeability pore in regulating necrotic cell death in mice

    Jason Karch et al.
    The proteins Bax and Bak, which increase the permeability of the mitochondrial membrane during apoptosis, are also crucial for generating a mitochondrial membrane pore that is specifically involved in necrosis.
    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. Microbiology and Infectious Disease

    An orphan cbb3-type cytochrome oxidase subunit supports Pseudomonas aeruginosa biofilm growth and virulence

    Jeanyoung Jo et al.
    During growth in biofilms and host infection, the opportunistic pathogen Pseudomonas aeruginosa employs respiratory heterocomplexes that support extracellular electron shuttling and pathogenicity.
    1. Cancer Biology
    2. Stem Cells and Regenerative Medicine

    Multimodal cell tracking from systemic administration to tumour growth by combining gold nanorods and reporter genes

    Joan Comenge et al.
    Combined cell labelling with a bi-cistronic reporter-gene vector and gold nanorods enables short- and long-term cell tracking in vivo via multimodal imaging (multispectral optoacoustic tomography, bioluminescence, fluorescence) with high spatial resolution.
    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
    2. Neuroscience

    Presenilin mutations deregulate mitochondrial Ca2+ homeostasis and metabolic activity causing neurodegeneration in Caenorhabditis elegans

    Shaarika Sarasija et al.
    In C. elegans, presenilin functions, independent of its gamma-secretase proteolytic activity, to regulate mitochondrial metabolism by controlling ER-mitochondrial calcium transfer and, even in the absence of Abeta signaling, loss of this activity leads to neurodegeneration.
    1. Human Biology and Medicine

    Cardiovascular adaptation to hypoxia and the role of peripheral resistance

    Andrew S Cowburn et al.
    Radiotelemetric and genetic studies of peripheral tissue response show that a peripheral tissue can dynamically alter cardiovascular adaptation to changes in environmental oxygen.
    1. Ecology

    Transcriptome analysis illuminates the nature of the intracellular interaction in a vertebrate-algal symbiosis

    John A Burns et al.
    The endosymbiosis between an alga and the spotted salamander shows several parallels to invertebrate-algal symbioses as well as to pathogen associations in vertebrate animals.