title: Lycopene protects human SH‑SY5Y neuroblastoma cells against hydrogen peroxide‑induced death via inhibition of oxidative stress and mitochondria‑associated apoptotic pathways.
abstract: Oxidative stress, which is characterized by excessive production of reactive oxygen species (ROS), is a common pathway that results in neuronal injury or death due to various types of pathological stress. Although lycopene has been identified as a potent antioxidant, its effect on hydrogen peroxide (H2O2)‑induced neuronal damage remains unclear. In the present study, pretreatment with lycopene was observed to protect SH‑SY5Y neuroblastoma cells against H2O2‑induced death via inhibition of apoptosis resulting from activation of caspase‑3 and translocation of apoptosis inducing factor (AIF) to the nucleus. Furthermore, the over‑produced ROS, as well as the reduced activities of anti‑oxidative enzymes, superoxide dismutase and catalase, were demonstrated to be alleviated by lycopene. Additionally, lycopene counteracted H2O2‑induced mitochondrial dysfunction, which was evidenced by suppression of mitochondrial permeability transition pore opening, attenuation of the decline of the mitochondrial membrane potential, and inhibition of the increase of Bax and decrease of Bcl‑2 levels within the mitochondria. The release of cytochrome c and AIF from the mitochondria was also reduced. These results indicate that lycopene is a potent neuroprotectant against apoptosis, oxidative stress and mitochondrial dysfunction, and could be administered to prevent neuronal injury or death.
authors.affiliation: Department of Anesthesiology, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China.
authors.forename: Chunsheng
authors.initials: C
authors.lastname: Feng
authors.affiliation: Department of Neurology, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China.
authors.forename: Tianfei
authors.initials: T
authors.lastname: Luo
authors.affiliation: Department of Neurosurgery, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China.
authors.forename: Shuyan
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Department of Neurosurgery, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China.
authors.forename: Kai
authors.initials: K
authors.lastname: Liu
authors.affiliation: Department of Emergent Medicine, People's Hospital of Jilin Province, Changchun, Jilin 130021, P.R. China.
authors.forename: Yanhong
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Neurosurgery, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China.
authors.forename: Yinan
authors.initials: Y
authors.lastname: Luo
authors.affiliation: Department of Neurosurgery, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Ge
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D002338:Carotenoids / Q000494:pharmacology*; D045744:Cell Line, Tumor; D006801:Humans; D006861:Hydrogen Peroxide / Q000494:pharmacology*; D000077276:Lycopene; D008928:Mitochondria / Q000378:metabolism* / Q000473:pathology; D009447:Neuroblastoma / Q000378:metabolism* / Q000473:pathology; D018384:Oxidative Stress / Q000187:drug effects*
chemical_list: D002338:Carotenoids; D006861:Hydrogen Peroxide; D000077276:Lycopene