Abstract
The molecular chaperone Clusterin (CLU) impacts the amyloid pathway in Alzheimer's disease (AD) but its role in tau pathology is unknown. We observed CLU co-localization with tau aggregates in AD and primary tauopathies and CLU levels were upregulated in response to tau accumulation. To further elucidate the effect of CLU on tau pathology, we utilized a gene delivery approach in CLU knock-out (CLU KO) mice to drive expression of tau bearing the P301L mutation. We found that loss of CLU was associated with exacerbated tau pathology and anxiety-like behaviors in our mouse model of tauopathy. Additionally, we found that CLU dramatically inhibited tau fibrilization using an in vitro assay. Together, these results demonstrate that CLU plays a major role in both amyloid and tau pathologies in AD.
Keywords:
Alzheimer’s disease; Clusterin; Tau; Tauopathy.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Aged
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Alzheimer Disease / genetics
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Alzheimer Disease / metabolism
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Alzheimer Disease / pathology
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Alzheimer Disease / physiopathology
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Animals
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Anxiety / physiopathology
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Clusterin / genetics*
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Clusterin / metabolism*
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Humans
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In Vitro Techniques
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Mice
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Mice, Knockout
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Middle Aged
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Pick Disease of the Brain / genetics
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Pick Disease of the Brain / metabolism
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Pick Disease of the Brain / pathology
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Pick Disease of the Brain / physiopathology
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Protein Aggregation, Pathological / genetics*
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Protein Aggregation, Pathological / metabolism
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Protein Aggregation, Pathological / pathology
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Protein Aggregation, Pathological / physiopathology
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Tauopathies / genetics*
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Tauopathies / metabolism
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Tauopathies / pathology
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Tauopathies / physiopathology
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tau Proteins / metabolism*
Substances
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CLU protein, human
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Clu protein, mouse
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Clusterin
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Mapt protein, mouse
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tau Proteins