Autophagy modulation as a treatment of amyloid diseases

Zoe Mputhia, Eugene Hone, Timir Tripathi, Tim Sargeant, Ralph Martins, Prashant Bharadwaj*

*Corresponding author for this work

    Research output: Contribution to journalReview articlepeer-review

    35 Citations (Scopus)
    34 Downloads (Pure)

    Abstract

    Amyloids are fibrous proteins aggregated into toxic forms that are implicated in several chronic disorders. More than 30 diseases show deposition of fibrous amyloid proteins associated with cell loss and degeneration in the affected tissues. Evidence demonstrates that amyloid diseases result from protein aggregation or impaired amyloid clearance, but the connection between amyloid accumulation and tissue degeneration is not clear. Common examples of amyloid diseases are Alzheimer’s disease (AD), Parkinson’s disease (PD) and tauopathies, which are the most common forms of neurodegenerative diseases, as well as polyglutamine disorders and certain peripheral metabolic diseases. In these diseases, increased accumulation of toxic amyloid proteins is suspected to be one of the main causative factors in the disease pathogenesis. It is therefore important to more clearly understand how these toxic amyloid proteins accumulate as this will aide in the development of more effective preventive and therapeutic strategies. Protein homeostasis, or proteostasis, is maintained by multiple cellular pathways—including protein synthesis, quality control, and clearance—which are collectively responsible for preventing protein misfolding or aggregation. Modulating protein degradation is a very complex but attractive treatment strategy used to remove amyloid and improve cell survival. This review will focus on autophagy, an important clearance pathway of amyloid proteins, and strategies for using it as a potential therapeutic target for amyloid diseases. The physiological role of autophagy in cells, pathways for its modulation, its connection with apoptosis, cell models and caveats in developing autophagy as a treatment and as a biomarker is discussed.

    Original languageEnglish
    Article number3372
    Pages (from-to)1-20
    Number of pages20
    JournalMolecules
    Volume24
    Issue number18
    DOIs
    Publication statusPublished - 16 Sep 2019

    Bibliographical note

    Copyright the Author(s) 2019. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

    Keywords

    • Alzheimer’s disease
    • Amyloid
    • Autophagy
    • Beta amyloid
    • Clearance
    • Huntington’s disease
    • Lysosome
    • Parkinson’s disease
    • Polyglutamine
    • Tau protein
    • Toxicity
    • α-synuclein

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