Inhibitory effect of lycopene on amyloid-β-induced apoptosis in neuronal cells

Sinwoo Hwang, Joo Weon Lim, Hyeyoung Kim

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Alzheimer’ s disease (AD) is a fatal neurodegenerative disease. Brain amyloid-β deposition is a crucial feature of AD, causing neuronal cell death by inducing oxidative damage. Reactive oxygen species (ROS) activate NF-κB, which induces expression of Nucling. Nucling is a pro-apoptotic factor recruiting the apoptosome complex. Lycopene is an antioxidant protecting from oxidative stress-induced cell damage. We investigated whether lycopene inhibits amyloid-β-stimulated apoptosis through reducing ROS and inhibiting mitochondrial dysfunction and NF-κB-mediated Nucling expression in neuronal SH-SY5Y cells. We prepared cells transfected with siRNA for Nucling or nontargeting control siRNA to determine the role of Nucling in amyloid-β-induced apoptosis. The amyloid-β increased intracellular and mitochondrial ROS levels, apoptotic indices (p53, Bax/Bcl-2 ratio, caspase-3 cleavage), NF-kB activation and Nucling expression, while cell viability, mitochondrial membrane potential, and oxygen consumption rate decreased in SH-SY5Y cells. Lycopene inhibited these amyloid-β-induced alterations. However, amyloid-β did not induce apoptosis, determined by cell viability and apoptotic indices (p53, Bax/Bcl-2 ratio, caspase-3 cleavage), in the cells transfected with siRNA for Nucling. Lycopene inhibited apoptosis by reducing ROS, and by inhibiting mitochondrial dysfunction and NF-κB-target gene Nucling expression in neuronal cells. Lycopene may be beneficial for preventing oxidative stress-mediated neuronal death in patients with neurodegeneration.

Original languageEnglish
Article number883
JournalNutrients
Volume9
Issue number8
DOIs
Publication statusPublished - 2017 Aug 16

All Science Journal Classification (ASJC) codes

  • Food Science
  • Nutrition and Dietetics

Fingerprint Dive into the research topics of 'Inhibitory effect of lycopene on amyloid-β-induced apoptosis in neuronal cells'. Together they form a unique fingerprint.

  • Cite this