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- W2068584575 abstract "Apoptosis of cholinergic neurons is one of the core hallmarks of Alzheimer's disease. SH-SY5Y neuroblastoma cells differentiated to the cholinergic phenotype were exposed to 100nM staurosporine. Over a treatment period of 24h, the pro- and anti-apoptotic factors, caspase-3 and Bcl-2, as well as LDH release as a measure of cell viability, were assessed in conjunction with the number of apoptotic cells by means of fluorescence-activated cell sorting. Caspase-3 activity and LDH release increased by 30% and 20% over controls, respectively, while Bcl-2 levels rose by 200% over controls. Furthermore, staurosporine treatment resulted in decreased acetylcholinesterase (AChE) enzymatic activity and decreased protein levels of the AChE splice variant tailed AChE (AChE-T). Only a slight increase in levels of readthrough AChE (AChE-R) was observed. Likewise, staurosporine reduced levels and activity of the cholinergic players choline acetyltransferase and high affinity choline uptake. The present study demonstrates that treatment with staurosporine leads to apoptotic events, which, however, are not reflected in the increased AChE activity and the alterations of AChE isoforms expression that are usually seen in apoptotic conditions. The effects of various additional phosphorylation inhibitors on AChE activity suggest that these unexpected cholinergic effects, firstly, are linked to the impact of staurosporine on phosphorylation and, secondly, reveal themselves in a first phase of cellular adaption that precedes neurotoxicity and subsequent cell death." @default.
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- W2068584575 date "2012-12-01" @default.
- W2068584575 modified "2023-09-25" @default.
- W2068584575 title "Staurosporine-induced apoptosis presents with unexpected cholinergic effects in a differentiated neuroblastoma cell line" @default.
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- W2068584575 doi "https://doi.org/10.1016/j.neuint.2012.07.018" @default.
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