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Proteasome Inhibiti...
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Agholme, LottaÖstergötlands Läns Landsting,Linköpings universitet,Avdelningen för neurovetenskap,Hälsouniversitetet,Geriatriska kliniken ViN
(författare)
Proteasome Inhibition Induces Stress Kinase Dependent Transport Deficits – Implications for Alzheimer’s Disease
- Artikel/kapitelEngelska2014
Förlag, utgivningsår, omfång ...
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Elsevier,2014
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:liu-81339
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-81339URI
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https://doi.org/10.1016/j.mcn.2013.11.001DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Alzheimer’s disease (AD) is characterized by accumulation of two misfolded and aggregated proteins, β-amyloid and hyperphosphorylated tau. Both cellular systems responsible for clearance of misfolded and aggregated proteins, the lysosomal and the proteasomal, have been shown to be malfunctioning in the aged brain and more so in AD patients. This malfunction could be the cause of β-amyloid and tau accumulation, eventually aggregating in plaques and tangles. We have investigated how decreased proteasome activity affects AD related pathophysiological changes of microtubule transport and stability, as well as tau phosphorylation. To do this, we used our recently developed neuronal model where human SH-SY5Y cells obtain neuronal morphology and function through differentiation. We found that exposure to low doses of the proteasome inhibitor MG-115 caused disturbed neuritic transport, together with microtubule destabilization and tau phosphorylation. Furthermore, reduced proteasome activity activated several kinases implicated in AD pathology, including JNK, c-Jun and ERK 1/2. Restoration of the microtubule transport was achieved by inhibiting ERK 1/2 activation, and simultaneous inhibition of both ERK 1/2 and c-Jun reversed the proteasome inhibition-induced tau phosphorylation. Taken together, this study suggests that a decrease in proteasome activity can, through activation of c-Jun and ERK 1/2, result in several events contributing to AD pathology. Restoring proteasome function or inhibiting ERK 1/2 and c-Jun could therefore be used as novel treatments against AD.
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Nath, SangeetaLinköpings universitet,Avdelningen för neurovetenskap,Hälsouniversitetet(Swepub:liu)sanna47
(författare)
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Domert, JakobLinköpings universitet,Avdelningen för neurovetenskap,Hälsouniversitetet(Swepub:liu)jakdo47
(författare)
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Marcusson, JanÖstergötlands Läns Landsting,Linköpings universitet,Avdelningen för neurovetenskap,Hälsouniversitetet,Geriatriska kliniken(Swepub:liu)janma25
(författare)
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Kågedal, KatarinaLinköpings universitet,Avdelningen för cellbiologi,Hälsouniversitetet(Swepub:liu)katka10
(författare)
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Hallbeck, MartinÖstergötlands Läns Landsting,Linköpings universitet,Avdelningen för neurovetenskap,Hälsouniversitetet,Klinisk patologi och klinisk genetik(Swepub:liu)marha90
(författare)
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Linköpings universitetAvdelningen för neurovetenskap
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Molecular and Cellular Neuroscience: Elsevier58, s. 29-391044-74311095-9327
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