Isothiocyanate from Moringa oleifera seeds mitigates hydrogen peroxide-induced cytotoxicity and preserved morphological features of human neuronal cells

PLoS One. 2018 May 3;13(5):e0196403. doi: 10.1371/journal.pone.0196403. eCollection 2018.

Abstract

Reactive oxygen species are well known for induction of oxidative stress conditions through oxidation of vital biomarkers leading to cellular death via apoptosis and other process, thereby causing devastative effects on the host organs. This effect is believed to be linked with pathological alterations seen in several neurodegenerative disease conditions. Many phytochemical compounds proved to have robust antioxidant activities that deterred cells against cytotoxic stress environment, thus protect apoptotic cell death. In view of that we studied the potential of glucomoringin-isothiocyanate (GMG-ITC) or moringin to mitigate the process that lead to neurodegeneration in various ways. Neuroprotective effect of GMG-ITC was performed on retinoic acid (RA) induced differentiated neuroblastoma cells (SHSY5Y) via cell viability assay, flow cytometry analysis and fluorescence microscopy by means of acridine orange and propidium iodide double staining, to evaluate the anti-apoptotic activity and morphology conservation ability of the compound. Additionally, neurite surface integrity and ultrastructural analysis were carried out by means of scanning and transmission electron microscopy to assess the orientation of surface and internal features of the treated neuronal cells. GMG-ITC pre-treated neuron cells showed significant resistance to H2O2-induced apoptotic cell death, revealing high level of protection by the compound. Increase of intracellular oxidative stress induced by H2O2 was mitigated by GMG-ITC. Thus, pre-treatment with the compound conferred significant protection to cytoskeleton and cytoplasmic inclusion coupled with conservation of surface morphological features and general integrity of neuronal cells. Therefore, the collective findings in the presence study indicated the potentials of GMG-ITC to protect the integrity of neuron cells against induced oxidative-stress related cytotoxic processes, the hallmark of neurodegenerative diseases.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Apoptosis / drug effects
  • Cell Differentiation
  • Cell Line
  • Cell Survival / drug effects
  • Humans
  • Hydrogen Peroxide / toxicity*
  • Isothiocyanates / pharmacology*
  • Microscopy, Electron, Scanning
  • Moringa oleifera / chemistry*
  • Nerve Degeneration / chemically induced
  • Nerve Degeneration / pathology
  • Nerve Degeneration / prevention & control
  • Neurons / cytology
  • Neurons / drug effects*
  • Neurons / metabolism
  • Neuroprotective Agents / pharmacology*
  • Oxidative Stress / drug effects
  • Reactive Oxygen Species / metabolism
  • Rhamnose / analogs & derivatives*
  • Rhamnose / pharmacology
  • Seeds / chemistry

Substances

  • 4-((alpha-L-rhamnosyloxy)benzyl)isothiocyanate
  • Isothiocyanates
  • Neuroprotective Agents
  • Reactive Oxygen Species
  • moringin
  • Hydrogen Peroxide
  • Rhamnose

Grants and funding

The work was funded by Universiti Putra Malaysia through GP-IPS (Vot no. 9537300) and GP (Vot no.9628600) to Ahmad Faizal Abdull Razis (AFAR); http://www.rmc.upm.edu.my/. The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.