48 results found
    1. Chromosomes and Gene Expression

    Sphingosine 1-phosphate-regulated transcriptomes in heterogenous arterial and lymphatic endothelium of the aorta

    Eric Engelbrecht et al.
    The sphingosine 1-phosphate receptor-1 (S1PR1) signals in heterogenous populations of mouse adventitial lymphatic (LEC) and arterial endothelial cells (aEC1, aEC2) to regulate chromatin and the transcriptome, thus affecting their phenotypes.
    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. Neuroscience

    The signaling lipid sphingosine 1-phosphate regulates mechanical pain

    Rose Z Hill et al.
    Constitutive sphingosine 1-phosphate signaling via the G-protein coupled receptor S1PR3 in mechanonociceptive somatosensory neurons is required for normal behavioral responses to noxious mechanical stimuli.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Mitochondria-specific photoactivation to monitor local sphingosine metabolism and function

    Suihan Feng et al.
    Caged, photoactivatible sphingosine localized to mitochondria permits demonstration of the importance of subcellular localization on lipid metabolism and signaling.
    1. Immunology and Inflammation

    High-endothelial cell-derived S1P regulates dendritic cell localization and vascular integrity in the lymph node

    Szandor Simmons et al.
    Impairment of the autocrine S1PR1-Gi signaling on HEVs results in high-endothelial cell apoptosis, reduced CCL21-secretion from HEVs, and cessation of HEV-DC interactions and lymphocyte immigration across the high-endothelial barrier.
    1. Biochemistry and Chemical Biology
    2. Developmental Biology

    The ceramide synthase 2b gene mediates genomic sensing and regulation of sphingosine levels during zebrafish embryogenesis

    Karen Mendelson et al.
    Developing oocytes lacking Sphk2 sense high sphingosine levels and transcriptionally activate expression of the gene encoding Cers2b, to mediate a salvage pathway to reduce potentially toxic sphingosine.
    1. Cell Biology

    Mitochondrial biogenesis is transcriptionally repressed in lysosomal lipid storage diseases

    King Faisal Yambire et al.
    Transcription factors KLF2 and ETV1 repress the transcriptional program of mitochondrial biogenesis, resulting in impaired mitochondrial function in lysosomal storage diseases.
    1. Cell Biology

    Intracellular sphingosine releases calcium from lysosomes

    Doris Höglinger et al.
    Sphingosine acts as a lipid messenger molecule in intracellular signaling networks that are relevant to lysosomal function and Niemann-Pick disease.
    1. Cell Biology
    2. Cancer Biology

    Defective apical extrusion signaling contributes to aggressive tumor hallmarks

    Yapeng Gu et al.
    Disrupting extrusion, a process that drives epithelial cell death, leads to increased cell survival, poor barrier function, and enhanced cell invasion and, thereby, promotes tumor initiation and progression.
    1. Immunology and Inflammation

    A novel role for lipoxin A4 in driving a lymph node–eye axis that controls autoimmunity to the neuroretina

    Jessica Wei et al.
    LXA4 in lymph nodes is an important resident homeostatic regulator that controls effector T cell functions and egress in the development of adaptive immune responses.

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