The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
trans-(−)-ε-Viniferin Increases Mitochondrial Sirtuin 3 (SIRT3), Activates AMP-activated Protein Kinase (AMPK), and Protects Cells in Models of Huntington Disease
Open accessAbstract
Huntington disease (HD) is an inherited neurodegenerative disorder caused by an abnormal polyglutamine expansion in the protein Huntingtin (Htt). Currently, no cure is available for HD. The mechanisms by which mutant Htt causes neuronal dysfunction and degeneration remain to be fully elucidated. Nevertheless, mitochondrial dysfunction has been suggested as a key event mediating mutant Htt-induced neurotoxicity because neurons are energy-demanding and particularly susceptible to energy deficits and oxidative stress. SIRT3, a member of sirtuin family, is localized to mitochondria and has been implicated in energy metabolism. Notably, we found that cells expressing mutant Htt displayed reduced SIRT3 levels. trans-(-)-ε-Viniferin (viniferin), a natural product among our 22 collected naturally occurring and semisynthetic stilbenic compounds, significantly attenuated mutant Htt-induced depletion of SIRT3 and protected cells from mutant Htt. We demonstrate that viniferin decreases levels of reactive oxygen species and prevents loss of mitochondrial membrane potential in cells expressing mutant Htt. Expression of mutant Htt results in decreased deacetylase activity of SIRT3 and further leads to reduction in cellular NAD(+) levels and mitochondrial biogenesis in cells. Viniferin activates AMP-activated kinase and enhances mitochondrial biogenesis. Knockdown of SIRT3 significantly inhibited viniferin-mediated AMP-activated kinase activation and diminished the neuroprotective effects of viniferin, suggesting that SIRT3 mediates the neuroprotection of viniferin. In conclusion, we establish a novel role for mitochondrial SIRT3 in HD pathogenesis and discovered a natural product that has potent neuroprotection in HD models. Our results suggest that increasing mitochondrial SIRT3 might be considered as a new therapeutic approach to counteract HD, as well as other neurodegenerative diseases with similar mechanisms.
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Cites
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LKB1 is the upstream kinase in the AMP-activated protein kinase cascade
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“SIRT3 has been shown to play important roles in various mitochondrial functions, such as maintaining basal ATP levels and regulating apoptosis and energy homeostasis (42).”
Background
Cited by
NAD+ metabolism: pathophysiologic mechanisms and therapeutic potential
Xie, N., Zhang, L., Gao, W., Huang, C., Huber, P. E., Zhou, X., Li, C., Shen, G., & Zou, B. (2020) · Signal Transduction and Targeted Therapy · doi:10.1038/s41392-020-00311-7 · Cited by 1,052
Brain metabolism in health, aging, and neurodegeneration
Camandola, S., & Mattson, M. P. (2017) · The EMBO Journal · doi:10.15252/embj.201695810 · Cited by 752
Excitotoxicity: Bridge to various triggers in neurodegenerative disorders
Mehta, A., Prabhakar, M., Kumar, P., Deshmukh, R., & Sharma, P. L. (2013) · European Journal of Pharmacology · doi:10.1016/j.ejphar.2012.10.032 · Cited by 665
Manoharan, S., Guillemin, G. J., Abiramasundari, R. S., Essa, M. M., Akbar, M., & Akbar, M. D. (2016) · Oxidative Medicine and Cellular Longevity · doi:10.1155/2016/8590578 · Cited by 523
Mitochondrial Sirtuin 3: New emerging biological function and therapeutic target
Zhang, J., Xiang, H., Liu, J., Chen, Y., He, R.-R., & Liu, B. (2020) · Theranostics · doi:10.7150/thno.45922 · Cited by 503
Metadata
- Authors
- Fu, J., Jin, J., Cichewicz, R. H., Hageman, S. A., Ellis, T. K., Xiang, L., Peng, Q., Jiang, M., Arbez, N., Hotaling, K., Ross, C. A., & Duan, W.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 2012-07
- Volume
- 287
- Issue
- 29
- Pages
- 24460-24472
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W1482169712
- Cited by
- 210
- References
- 11
- FWCI
- 7.26
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- CoChat. (2026). Citation check: trans-(−)-ε-Viniferin Increases Mitochondrial Sirtuin 3 (SIRT3), Activates AMP-activated Protein Kinase (AMPK), and Protects Cells in Models of Huntington Disease. https://app.cochat.ai/papers/10.1074/jbc.m112.382226
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- Fu, J., Jin, J., Cichewicz, R. H., Hageman, S. A., Ellis, T. K., Xiang, L., Peng, Q., Jiang, M., Arbez, N., Hotaling, K., Ross, C. A., & Duan, W. (2012). trans-(−)-ε-Viniferin Increases Mitochondrial Sirtuin 3 (SIRT3), Activates AMP-activated Protein Kinase (AMPK), and Protects Cells in Models of Huntington Disease. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m112.382226
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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
