Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/76028
| Title: | TDP-43/HDAC6 axis promoted tumor progression and regulated nutrient deprivation-induced autophagy in glioblastoma | Authors: | Lin, TW Chen, MT Lin, LT Huang, PI Lo, WL Yang, YP Lu, KH Chen, YW Chiou, SH Wu, CW |
Issue Date: | 22-Aug-2017 | Source: | Oncotarget, 22 Aug. 2017, v. 8, no. 34, p. 56612-56625 | Abstract: | Glioblastoma Multiforme (GBM) is a lethal primary brain tumor with poor survival lifespan and dismal outcome. Surgical resection of GBM is greatly limited due to the biological significance of brain, giving rise to tumor relapse in GBM patients. Transactive response DNA binding protein-43 (TDP-43) is a DNA/RNA-binding protein known for causing neurodegenerative diseases through post-translational modification; but little is known about its involvement in cancer development. In this study, we found that nutrient deprivation in GBM cell lines elevated TDP-43 expression by a mechanism of evasion from ubiquitin-dependent proteolytic pathway, and subsequently activated the autophagy process. Exogenous overexpression of TDP-43 consistently activated autophagy and suppressed stress-induced apoptosis. The inhibition of autophagy in TDP-43-overexpressing cells effectively increased the apoptotic population under nutrition shortage. Furthermore, we demonstrated that HDAC6 was involved in the activation of autophagy in TDP-43-overexpressing GBM cell lines. The treatment with SAHA, a universal HDAC inhibitor, significantly reduced TDP-43-mediated anti-apoptotic effect. Additionally, the results of immunohistochemistry showed that TDP-43 and HDAC6 collaborated in GBM-tumor lesions and negatively correlated with the relapse-free survival of GBM patients. Taken together, our results suggest that the TDP-43-HDAC6 signaling axis functions as a stress responsive pathway in GBM tumorigenesis and combats nutrient deprivation stress via activating autophagy, while inhibition of HDAC6 overpowers the pathway and provides a novel therapeutic strategy against GBM. | Keywords: | TDP-43 Autophagy Glioblastoma HDAC6 Nutrient deprivation |
Publisher: | Impact Journals LLC | Journal: | Oncotarget | ISSN: | 1949-2553 | DOI: | 10.18632/oncotarget.17979 | Rights: | Copyright: Lin et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC BY 3.0) (https://creativecommons.org/licenses/by/3.0/),
which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The following publication Lin, T. W., Chen, M. T., Lin, L. T., Huang, P. I., Lo, W. L., Yang, Y. P., ... & Wu, C. W. (2017). TDP-43/HDAC6 axis promoted tumor progression and regulated nutrient deprivation-induced autophagy in glioblastoma. Oncotarget, 8(34), 56612-56625 is available at https://doi.org/10.18632/oncotarget.17979 |
| Appears in Collections: | Journal/Magazine Article |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| oncotarget-v8i34-17979.pdf | 9.95 MB | Adobe PDF | View/Open |
Access
View full-text via PolyU eLinks 
Page views
107
Last Week
0
0
Last month
Citations as of Sep 24, 2023
Downloads
8
Citations as of Sep 24, 2023
SCOPUSTM
Citations
27
Last Week
0
0
Last month
Citations as of Sep 28, 2023
WEB OF SCIENCETM
Citations
26
Last Week
0
0
Last month
Citations as of Sep 28, 2023
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.