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Cycloheximide Treatment Causes a ZVAD-Sensitive Protease-Dependent Cleavage of Human Tau in Drosophila Cells
Neurofibrillary tangles are the main pathological feature of Alzheimer’s disease. Insoluble tau protein is the major component of neurofibrillary tangles. Defects in the tau protein degradation pathway in neurons can lead to the accumulation of tau and its subsequent aggregation. Currently, contradi...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
IOS Press
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4927919/ https://www.ncbi.nlm.nih.gov/pubmed/26599052 http://dx.doi.org/10.3233/JAD-150423 |
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author | Geng, Junhua Xia, Lu Li, Wanjie Zhao, Changqi Dou, Fei |
author_facet | Geng, Junhua Xia, Lu Li, Wanjie Zhao, Changqi Dou, Fei |
author_sort | Geng, Junhua |
collection | PubMed |
description | Neurofibrillary tangles are the main pathological feature of Alzheimer’s disease. Insoluble tau protein is the major component of neurofibrillary tangles. Defects in the tau protein degradation pathway in neurons can lead to the accumulation of tau and its subsequent aggregation. Currently, contradictory results on the tau degradation pathway have been reported by different groups. This discrepancy is most likely due to different cell lines and methods used in those studies. In this study, we found that cycloheximide treatment induced mild activation of a ZVAD-sensitive protease in Drosophila Kc cells, resulting in cleavage of tau at its C-terminus; this cleavage could generate misleading tau protein degradation pattern results depending on the antibodies used in the assay. Because cycloheximide is a broadly used chemical reagent for the study of protein degradation, the unexpected artificial effect we observed here indicates that cycloheximide is not suitable for the study of tau degradation. Other methods, such as inducible expression systems and pulse-chase assays, may be more appropriate for studying tau degradation under physiological conditions. |
format | Online Article Text |
id | pubmed-4927919 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | IOS Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-49279192016-06-30 Cycloheximide Treatment Causes a ZVAD-Sensitive Protease-Dependent Cleavage of Human Tau in Drosophila Cells Geng, Junhua Xia, Lu Li, Wanjie Zhao, Changqi Dou, Fei J Alzheimers Dis Research Article Neurofibrillary tangles are the main pathological feature of Alzheimer’s disease. Insoluble tau protein is the major component of neurofibrillary tangles. Defects in the tau protein degradation pathway in neurons can lead to the accumulation of tau and its subsequent aggregation. Currently, contradictory results on the tau degradation pathway have been reported by different groups. This discrepancy is most likely due to different cell lines and methods used in those studies. In this study, we found that cycloheximide treatment induced mild activation of a ZVAD-sensitive protease in Drosophila Kc cells, resulting in cleavage of tau at its C-terminus; this cleavage could generate misleading tau protein degradation pattern results depending on the antibodies used in the assay. Because cycloheximide is a broadly used chemical reagent for the study of protein degradation, the unexpected artificial effect we observed here indicates that cycloheximide is not suitable for the study of tau degradation. Other methods, such as inducible expression systems and pulse-chase assays, may be more appropriate for studying tau degradation under physiological conditions. IOS Press 2015-11-22 /pmc/articles/PMC4927919/ /pubmed/26599052 http://dx.doi.org/10.3233/JAD-150423 Text en IOS Press and the authors. All rights reserved https://creativecommons.org/licenses/by-nc/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial (CC BY-NC 4.0) License (https://creativecommons.org/licenses/by-nc/4.0/) , which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Geng, Junhua Xia, Lu Li, Wanjie Zhao, Changqi Dou, Fei Cycloheximide Treatment Causes a ZVAD-Sensitive Protease-Dependent Cleavage of Human Tau in Drosophila Cells |
title | Cycloheximide Treatment Causes a ZVAD-Sensitive Protease-Dependent Cleavage of Human Tau in Drosophila Cells |
title_full | Cycloheximide Treatment Causes a ZVAD-Sensitive Protease-Dependent Cleavage of Human Tau in Drosophila Cells |
title_fullStr | Cycloheximide Treatment Causes a ZVAD-Sensitive Protease-Dependent Cleavage of Human Tau in Drosophila Cells |
title_full_unstemmed | Cycloheximide Treatment Causes a ZVAD-Sensitive Protease-Dependent Cleavage of Human Tau in Drosophila Cells |
title_short | Cycloheximide Treatment Causes a ZVAD-Sensitive Protease-Dependent Cleavage of Human Tau in Drosophila Cells |
title_sort | cycloheximide treatment causes a zvad-sensitive protease-dependent cleavage of human tau in drosophila cells |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4927919/ https://www.ncbi.nlm.nih.gov/pubmed/26599052 http://dx.doi.org/10.3233/JAD-150423 |
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