305 results found
    1. Neuroscience

    Mature oligodendrocytes bordering lesions limit demyelination and favor myelin repair via heparan sulfate production

    Magali Macchi et al.
    Heparan sulfate synthesis by mature oligodendrocytes creates a protective and permissive environment controling microglia and oligodendrocyte progenitors reactivation during remyelination.
    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. Biochemistry and Chemical Biology
    2. Cell Biology

    Heparan sulfates are critical regulators of the inhibitory megakaryocyte-platelet receptor G6b-B

    Timo Vögtle et al.
    Heparan sulfates in the vessel wall bind and regulate signaling from the megakaryocyte/platelet-specific inhibitory receptor G6b-B, a critical regulator of platelet homeostasis.
    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. Cell Biology

    Cells must express components of the planar cell polarity system and extracellular matrix to support cytonemes

    Hai Huang, Thomas B Kornberg
    Different cytoneme types require specific heparan sulfate proteoglycans (HSPGs) that are stratified within the extracellular matrix in Drosophila.
    1. Developmental Biology

    SMOC can act as both an antagonist and an expander of BMP signaling

    J Terrig Thomas et al.
    SMOC inhibits BMP signaling locally, but also expands the range of BMP signaling by competing for heparan sulfate binding sites.
    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.
    1. Neuroscience

    Test of the 'glymphatic' hypothesis demonstrates diffusive and aquaporin-4-independent solute transport in rodent brain parenchyma

    Alex J Smith et al.
    Solute movement in brain extracellular space is determined by solute diffusion, and does not depend on convection or aquaporin-4 expression as predicted by the glymphatic mechanism.
    1. Developmental Biology

    SOX2 regulates acinar cell development in the salivary gland

    Elaine Emmerson et al.
    Establishment of the acinar lineage in the salivary gland requires SOX2 and parasympathetic nerves.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Single-molecule FRET unveils induced-fit mechanism for substrate selectivity in flap endonuclease 1

    Fahad Rashid et al.
    Structure specific nucleases that act in DNA replication, repair and recombination actively mold their DNA while transforming their own structure to achieve precise cleavage of their cognate DNA and avoid the deleterious cleavage of noncognate DNA.

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