466 results found
    1. Neuroscience

    Hippocampal activation is associated with longitudinal amyloid accumulation and cognitive decline

    Stephanie L Leal et al.
    Cognitively normal older adults show a positive relationship between neural activity during memory encoding and brain β-amyloid deposition rate over the subsequent 3-4 years, supporting preclinical data that associates neural activity with β-amyloid deposition.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Inhibition by small-molecule ligands of formation of amyloid fibrils of an immunoglobulin light chain variable domain

    Boris Brumshtein et al.
    Ligands that bind dimers of light chain variable domains inhibit the formation of amyloid fibrils.
    1. Cancer Biology

    Epithelial-Myeloid cell crosstalk regulates acinar cell plasticity and pancreatic remodeling in mice

    Yaqing Zhang et al.
    In the pancreas, reciprocal interactions between epithelial cells and myeloid cells determine the balance between tissue repair and carcinogenesis by regulating acinar cell plasticity through differential activation of EGFR/MAPK signaling.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A molecular tweezer antagonizes seminal amyloids and HIV infection

    Edina Lump et al.
    CLR01 is a small molecule that could be an effective topical microbicide to eliminate HIV (and other enveloped viruses), and to antagonize host-encoded amyloid fibrils that promote HIV infection.
    1. Structural Biology and Molecular Biophysics
    2. Immunology and Inflammation

    Serum amyloid A is a retinol binding protein that transports retinol during bacterial infection

    Mehabaw G Derebe et al.
    Serum amyloid A proteins bind retinol with nanomolar affinity, and do so by forming oligomers that create a hydrophobic pocket that shields retinol from the aqueous environment.
    1. Structural Biology and Molecular Biophysics
    2. Human Biology and Medicine

    Structure-based discovery of fiber-binding compounds that reduce the cytotoxicity of amyloid beta

    Lin Jiang et al.
    By using structural methods to screen compounds for their ability to interact with amyloid beta, researchers have identified small molecules that stabilize amyloid fibers and reduce the toxic effect of smaller aggregates on cells.
    1. Structural Biology and Molecular Biophysics
    2. Human Biology and Medicine

    Semen amyloids participate in spermatozoa selection and clearance

    Nadia R Roan et al.
    Ex vivo characterization of the interaction of human sperm with semen factors reveals that semen amyloids, previously discovered due to their ability to enhance HIV infection, serve a physiological function by promoting disposal of the defective sperm.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The physical dimensions of amyloid aggregates control their infective potential as prion particles

    Ricardo Marchante et al.
    Size threshold and suprastructure formation are key parameters that control the infective potential of amyloid fibrils as prion particles.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The amyloid-beta forming tripeptide cleavage mechanism of γ-secretase

    David M Bolduc et al.
    The protease γ-secretase generates amyloid-beta peptides using a mechanism that is driven by the stabilization of an enzyme-substrate scisson complex.

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