Neuroprotective Effects of SG-168 Against Oxidative Stress-Induced Apoptosis in PC12 Cells
- 1 January 2011
- journal article
- research article
- Published by Mary Ann Liebert Inc in Journal of Medicinal Food
- Vol. 14 (1-2), 120-127
- https://doi.org/10.1089/jmf.2010.1027
Abstract
Postmortem examinations of tissues of humans and rodents with a host of neurodegenerative conditions, including Alzheimer's and Parkinson's diseases, have identified oxidative damage in proteins, lipids, and DNA. The aim of this study was to better understand the cellular mechanisms of neuronal cell degeneration induced via oxidative stress and the protective roles of bioactive substance. In order to achieve this aim, we established a screening program to discover therapeutic agents that exhibit preferential neuroprotective activity in H2O2-treated PC12 cells. During the course of our screening program, we isolated an active compound, SG-168, from Dendrobium nobile Lindley and identified it as a neuroprotective agent. SG-168 was identified as a compound with an acetal skeleton, a prototypical compound, by electrospray ionization-mass spectrometry analysis and various nuclear magnetic resonance spectroscopic methods. The protective effect of SG-168 in PC12 cells with H2O2-induced oxidative damage was investigated by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide reduction assay. As expected, incubation with H2O2 for 2 hours resulted in cell viability of 31.8% compared to the control, while pretreatment of SG-168 increased cell viability by 15–50% compared to the H2O2-stressed control cells. These results showed that SG-168 inhibits H2O2-induced apoptotic cell death. Interestingly, flow cytometric analysis showed that H2O2-treated PC12 cells incubated with SG-168 exhibited greatly suppressed apoptosis. In summation, the results of this study suggest that SG-168 has potential as a new antioxidant agent against neuronal diseases.Keywords
This publication has 38 references indexed in Scilit:
- Antioxidant capacity and polyphenolic content of high-protein lupin productsFood Chemistry, 2009
- Salvianolic acid B, an antioxidant from Salvia miltiorrhiza, prevents 6-hydroxydopamine induced apoptosis in SH-SY5Y cellsThe International Journal of Biochemistry & Cell Biology, 2008
- Protective Effects ofPaeonia lactifloraPall on Hydrogen Peroxide-Induced Apoptosis in PC12 CellsBioscience, Biotechnology, and Biochemistry, 2008
- Oxidative Stress and NeurotoxicityChemical Research in Toxicology, 2007
- Oxidative stress is the primary event: Effects of ethanol consumption in brainIndian Journal of Clinical Biochemistry, 2007
- Melatonin protects against hydrogen peroxide‐induced cell death signaling in SH‐SY5Y cultured cells: involvement of nuclear factor kappa B, Bax and Bcl‐2Journal of Pineal Research, 2006
- Oxidative stress and neurodegeneration: where are we now?Journal of Neurochemistry, 2006
- The radical scavenger CR‐6 protects SH‐SY5Y neuroblastoma cells from oxidative stress‐induced apoptosis: effect on survival pathwaysJournal of Neurochemistry, 2006
- Hydrogen peroxide preconditioning protects PC12 cells against apoptosis induced by dopamineLife Sciences, 2005