178 results found
    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.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Somatostatin binds to the human amyloid β peptide and favors the formation of distinct oligomers

    Hansen Wang et al.
    The cyclic neuropeptide somatostatin binds to human Aβ1-42 through an interface that critically relies on a specific tryptophan, thereby blocking the propensity of Aβ to aggregate, a critical step in the pathobiology of Alzheimer's disease.
    1. Neuroscience

    Clearance of beta-amyloid is facilitated by apolipoprotein E and circulating high-density lipoproteins in bioengineered human vessels

    Jerome Robert et al.
    Modelling beta-amyloid deposition in bioengineered human vessels represents a notable advance to further investigate the role of the vasculature in Alzheimer's disease.
    1. Cell Biology
    2. Genetics and Genomics

    Endoplasmic reticulum-associated SKN-1A/Nrf1 mediates a cytoplasmic unfolded protein response and promotes longevity

    Nicolas J Lehrbach, Gary Ruvkun
    SKN-1A/Nrf1 promotes healthy aging by activating protein degradation in response to accumulation of misfolded proteins.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    The genetic landscape for amyloid beta fibril nucleation accurately discriminates familial Alzheimer’s disease mutations

    Mireia Seuma et al.
    A massively parallel analysis of the effects of mutations on amyloid beta nucleation provide the first comprehensive atlas of how mutations alter the formation of amyloid fibrils.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure-based inhibitors of amyloid beta core suggest a common interface with tau

    Sarah L Griner et al.
    Aβ inhibitors effectively block its aggregation, while also reducing seeding of tau aggregation from Aβ, tau, and AD derived fibrils, suggesting the two share a structurally related disease relevant interface.
    1. Computational and Systems Biology
    2. Neuroscience

    Mouse brain transcriptome responses to inhaled nanoparticulate matter differed by sex and APOE in Nrf2-Nfkb interactions

    Amin Haghani et al.
    Transcriptome analysis of mouse brain revealed that the APOE4 allele and sex can alter air pollution neurotoxicity in adults.
    1. Cell Biology
    2. Neuroscience

    Presenilin mutations deregulate mitochondrial Ca2+ homeostasis and metabolic activity causing neurodegeneration in Caenorhabditis elegans

    Shaarika Sarasija et al.
    In C. elegans, presenilin functions, independent of its gamma-secretase proteolytic activity, to regulate mitochondrial metabolism by controlling ER-mitochondrial calcium transfer and, even in the absence of Abeta signaling, loss of this activity leads to neurodegeneration.
    1. Genetics and Genomics
    2. Neuroscience

    Increased processing of SINE B2 ncRNAs unveils a novel type of transcriptome deregulation in amyloid beta neuropathology

    Yubo Cheng et al.
    SINE RNAs are implicated in amyloid beta molecular pathology in hippocampus.

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