533 results found
    1. Neuroscience

    Apolipoprotein M-bound sphingosine-1-phosphate regulates blood–brain barrier paracellular permeability and transcytosis

    Mette Mathiesen Janiurek et al.
    Shortage of blood-borne apolipoprotein-M–bound sphingosine-1-phosphate, which accompanies various brain disorders, causes paracellular leak and increase in transcytosis at the blood–brain barrier, which can be reversed, thus is of clinical relevance.
    1. Stem Cells and Regenerative Medicine
    2. Immunology and Inflammation

    Modulation of occluding junctions alters the hematopoietic niche to trigger immune activation

    Rohan J Khadilkar et al.
    Occluding-junctions form a permeability barrier around the hematopoietic niche in Drosophila that controls the production of immune cells in response to infection by shaping the signalling micro-environment produced by the niche.
    1. Immunology and Inflammation
    2. Medicine

    Identification of specific Tie2 cleavage sites and therapeutic modulation in experimental sepsis

    Temitayo O Idowu et al.
    Matrix metalloprotease (MMP)-14 cleaves Tie2 at three distinct sites within the fibronectin type-III (FN3) domain and its pharmacological blockade inhibits Tie2 pathological shedding to exert barrier protective effects.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Nup98 FG domains from diverse species spontaneously phase-separate into particles with nuclear pore-like permselectivity

    Hermann Broder Schmidt, Dirk Görlich
    How nuclear pore complexes establish their permeability barrier has been a long-standing question; now, this process can be reconstituted by a surprisingly simple and rapid self-assembly of Nup98 FG domains into selective FG phases.
    1. Microbiology and Infectious Disease

    The Acinetobacter baumannii Mla system and glycerophospholipid transport to the outer membrane

    Cassandra Kamischke et al.
    An Acinetobacter baumannii ABC transporter likely facilitates transport of glycerophospholipids from the inner to the outer membrane.
    1. Structural Biology and Molecular Biophysics

    Allosteric signalling in the outer membrane translocation domain of PapC usher

    Irene Farabella et al.
    Input from computational models has enabled the detection of allosteric communication that modulates the gating mechanism of a bacterial outer-membrane protein.
    1. Medicine

    Direct reprogramming of human smooth muscle and vascular endothelial cells reveals defects associated with aging and Hutchinson-Gilford progeria syndrome

    Simone Bersini et al.
    Direct reprogramming of smooth muscle cells from HGPS patients revealed that BMP4 is a key contributor of vascular degeneration and might represent a new therapeutic target.
    1. Developmental Biology

    Low wnt/β-catenin signaling determines leaky vessels in the subfornical organ and affects water homeostasis in mice

    Fabienne Benz et al.
    Endothelial tightening by augmenting low level Wnt/β-catenin activity in vessels of the mouse subfornical organ, influences neuronal activation in water-deprived mice, linking endothelial barrier properties to neuro-vascular coupling.
    1. Developmental Biology
    2. Neuroscience

    Beta-catenin signaling regulates barrier-specific gene expression in circumventricular organ and ocular vasculatures

    Yanshu Wang et al.
    Elevating beta-catenin signaling converts endothelial cells in typically fenestrated central nervous system vasculature to a blood-brain barrier (BBB) phenotype and promotes a BBB gene expression program and chromatin landscape.
    1. Cell Biology
    2. Computational and Systems Biology

    Development, calibration, and validation of a novel human ventricular myocyte model in health, disease, and drug block

    Jakub Tomek et al.
    A computer model of human cardiomyocyte was produced and validated on independent datasets, overcoming shortcomings of its predecessors, also yielding broadly relevant insights and results on major ionic currents.

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