Abstract
Background and Objective: This investigation explores the neuroprotective effect of PIASA, a newly designed peptide, VCSVY, in in-silico and in opposition to rotenone stimulated oxidative stress, mitochondrial dysfunction, and apoptosis in an SH-SY5Y cellular model.
Methods: Docking and visualization of the PIASA and rotenone were progressed against mitochondrial respiratory complex I (MCI). The in-silico analysis showed PIASA to have interaction with the binding sites of rotenone, which may reduce the rotenone interaction and its toxicity too. The SH-SY5Y cells were segregated into four experimental groups: Group I: untreated control cells; Group II: rotenone-only (100 nM) treated cells; Group III: PIASA (5 μM) + rotenone (100 nM) treated cells; and Group IV: PIASA-only (5 μM) treated cells.
Results: We evaluated the cell viability, mitochondrial membrane potential (MMP), reactive oxygen species (ROS), apoptosis (dual staining technique), nuclear morphological changes (Hoechst staining technique), the expressions of BAX, Bcl-2, cyt c, pro-caspase 3, and caspase 3, -6, -8, -9, and cleaved caspase 3 by western blot analysis. In SH-SY5Y cells, we further observed the cytotoxicity, oxidative stress and mitochondrial dysfunction in rotenone-only treated cells, whereas pretreatment of PIASA attenuated the rotenone-mediated toxicity. Moreover, rotenone toxicity is caused by complex I inhibition, which leads to mitochondrial dysfunction, increased BAX expression, while downregulating the Bcl-2 expression and cyt c release, and then finally, caspases activation. PIASA pretreatment prevented the cytotoxic effects via the normalization of apoptotic marker expressions influenced by rotenone. In addition, pre-clinical studies are acceptable in rodents to make use of PIASA as a revitalizing remedial agent, especially for PD in the future.
Conclusion: Collectively, our results propose that PIASA mitigated rotenone-stimulated oxidative stress, mitochondrial dysfunction, and apoptosis in rotenone-induced SH-SY5Y cells.
Keywords: Parkinson’s disease, SH-SY5Y cells, peptide, cell viability, apoptosis.
Graphical Abstract
[http://dx.doi.org/10.1002/mds.27078] [PMID: 28631854]
[http://dx.doi.org/10.2174/1570159X15666171016163510] [PMID: 29046156]
[http://dx.doi.org/10.1186/2047-9158-3-9] [PMID: 24847438]
[http://dx.doi.org/10.1016/j.freeradbiomed.2013.01.003] [PMID: 23328732]
[http://dx.doi.org/10.1084/jem.183.4.1533] [PMID: 8666911]
[http://dx.doi.org/10.1006/exnr.2002.8072] [PMID: 12504863]
[http://dx.doi.org/10.1186/s40478-014-0135-5]
[http://dx.doi.org/10.1016/j.biopha.2018.04.025] [PMID: 29677544]
[http://dx.doi.org/10.1111/j.1476-5381.2009.00190.x] [PMID: 19459844]
[http://dx.doi.org/10.1007/978-1-4419-7210-1_36] [PMID: 22161355]
[http://dx.doi.org/10.1074/jbc.M114.620484] [PMID: 25616660]
[http://dx.doi.org/10.1016/j.comtox.2020.100123]
[http://dx.doi.org/10.1038/sj.bjp.0705776] [PMID: 15155533]
[http://dx.doi.org/10.1016/j.bmc.2017.06.052] [PMID: 28720325]
[http://dx.doi.org/10.3389/fmolb.2021.697586] [PMID: 34195230]
[http://dx.doi.org/10.1016/j.taap.2018.02.003] [PMID: 29428530]
[http://dx.doi.org/10.1016/j.neuroscience.2013.02.030] [PMID: 23485810]
[http://dx.doi.org/10.1016/j.npep.2015.09.011] [PMID: 26459609]
[http://dx.doi.org/10.1023/B:JOBB.0000041766.71376.81] [PMID: 15377870]
[http://dx.doi.org/10.1002/biof.5520180208] [PMID: 14695921]
[http://dx.doi.org/10.1155/2014/616149] [PMID: 25197653]
[http://dx.doi.org/10.1016/S0161-5890(02)00252-3] [PMID: 12493639]