Abstract:
:Synucleinopathies are neurodegenerative diseases characterized by the accumulation of either neuronal/axonal or glial insoluble proteinaceous aggregates mainly composed of α-synuclein (α-syn). Among them, the most common disorders are Parkinson's disease, dementia with Lewy bodies, multiple system atrophy, and some forms of familial parkinsonism. Both α-syn fibrils and oligomers have been found to exert toxic effects on neurons or oligodendroglial cells, can activate neuroinflammatory responses, and mediate the spreading of α-syn pathology. This poses the question of which is the most toxic α-syn species. What is worst, α-syn appears as a very peculiar protein, exerting multiple physiological functions in neurons, especially at synapses, but without acquiring a stable tertiary structure. Its conformation is particularly plastic, and the protein can exist in a natively unfolded state (mainly in solution), partially α-helical folded state (when it interacts with biological membranes), or oligomeric state (tetramers or dimers with debated functional profile). The extent of α-syn expression impinges on the resilience of neuronal cells, as multiplications of its gene locus, or overexpression, can cause neurodegeneration and onset of motor phenotype. For these reasons, one of the main challenges in the field of synucleinopathies, which still nowadays can only be managed by symptomatic therapies, has been the development of strategies aimed at reducing α-syn levels, oligomer formation, fibrillation, or cell-to-cell transmission. This review resumes the therapeutic approaches that have been proposed or are under development to counteract α-syn pathology by direct targeting of this protein and discuss their pros and cons in relation to the current state-of-the-art α-syn biology.
journal_name
IUBMB Lifejournal_title
IUBMB lifeauthors
Longhena F,Faustini G,Brembati V,Pizzi M,Bellucci Adoi
10.1002/iub.2194subject
Has Abstractpub_date
2020-04-01 00:00:00pages
590-600issue
4eissn
1521-6543issn
1521-6551journal_volume
72pub_type
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