922 results found
    1. Human Biology and Medicine

    Expression of SREBP-1c Requires SREBP-2-mediated Generation of a Sterol Ligand for LXR in Livers of Mice

    Shunxing Rong et al.
    SREBP-2 directly regulates genes involved in cholesterol homeostasis and indirectly regulates fatty acid synthesis through the production of a ligand responsible for the activation of LXR and SREBP-1c.
    1. Neuroscience

    LAR receptor phospho-tyrosine phosphatases regulate NMDA-receptor responses

    Alessandra Sclip, Thomas C Südhof
    LAR-RPTPs are not essential for synapse formation, but they are important determinants of synapse properties as they contribute to regulate postsynaptic NMDA receptor function.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    LXRs link metabolism to inflammation through Abca1-dependent regulation of membrane composition and TLR signaling

    Ayaka Ito et al.
    The cholesterol-sensing nuclear receptor LXR regulates inflammatory responses by altering the lipid composition of cell membranes.
    1. Neuroscience

    Loss of the liver X receptor LXRα/β in peripheral sensory neurons modifies energy expenditure

    Virginie Mansuy-Aubert et al.
    In sensory neurons, the receptors LXRα and LXRβ sense dietary-derived molecules to regulate whole body energy expenditure, and present a possible target for new anti-obesity agents.
    1. Cell Biology

    Inhibition of cholesterol biosynthesis through RNF145-dependent ubiquitination of SCAP

    Li Zhang et al.
    The E3 ubiquitin ligase RNF145 is shown to contribute to crosstalk between the LXR and SREBP-2 pathways in the regulation of cholesterol homeostasis.
    1. Cell Biology
    2. Human Biology and Medicine

    BHLHE40, a third transcription factor required for insulin induction of SREBP-1c mRNA in rodent liver

    Jing Tian et al.
    Biochemical and genetic studies reveal a third transcription factor, BHLHE40, that together with LXR and C/EBPβ mediates insulin induction of SREBP-1c, which in turn leads to triglyceride accumulation in liver.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Molecular mechanism to target the endosomal Mon1-Ccz1 GEF complex to the pre-autophagosomal structure

    Jieqiong Gao et al.
    The endosomal GEF Mon1-Ccz1 binds to Atg8 on autophagosomes, and recruits its substrate, the Rab7-like Ypt7, which then mediates fusion of the autophagosomes with the lysosome.
    1. Cell Biology
    2. Developmental Biology

    R-spondins engage heparan sulfate proteoglycans to potentiate WNT signaling

    Ramin Dubey et al.
    Heparan Sulfate Proteoglycans function as receptors for the R-spondins, a family of growth factors that amplify the strength of WNT signaling during development and in adult stem cells.
    1. Cell Biology
    2. Developmental Biology

    R-spondins can potentiate WNT signaling without LGRs

    Andres M Lebensohn, Rajat Rohatgi
    R-spondins 2 and 3 can potentiate WNT signaling in the absence of LGRs through interactions with ZNRF3/RNF43 E3 ubiquitin ligases and heparan sulfate proteoglycans, defining two alternative modes of R-spondin-mediated signaling.
    1. Developmental Biology
    2. Neuroscience

    TIAM-1/GEF can shape somatosensory dendrites independently of its GEF activity by regulating F-actin localization

    Leo TH Tang et al.
    The DMA-1/LRR-TM cell surface receptor signals through partially redundant pathways to cell-autonomously pattern dendrites, including by directly forming a complex with both the TIAM-1/GEF and ACT-4/Actin.

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