African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12294

Full Length Research Paper

TetraSOD® activates the antioxidant response pathway in human cells: An in vitro approach

Pilar Ramírez
  • Pilar Ramírez
  • Fitoplancton Marino, S.L. Dársena Comercial S/N (Muelle Pesquero), 11500 El Puerto de Santa María (Cádiz), Spain.
  • Google Scholar
Sonia Torres
  • Sonia Torres
  • Fitoplancton Marino, S.L. Dársena Comercial S/N (Muelle Pesquero), 11500 El Puerto de Santa María (Cádiz), Spain.
  • Google Scholar
Carmen Lama
  • Carmen Lama
  • Fitoplancton Marino, S.L. Dársena Comercial S/N (Muelle Pesquero), 11500 El Puerto de Santa María (Cádiz), Spain.
  • Google Scholar
Lalia Mantecón
  • Lalia Mantecón
  • Fitoplancton Marino, S.L. Dársena Comercial S/N (Muelle Pesquero), 11500 El Puerto de Santa María (Cádiz), Spain.
  • Google Scholar
Carlos Unamunzaga
  • Carlos Unamunzaga
  • Fitoplancton Marino, S.L. Dársena Comercial S/N (Muelle Pesquero), 11500 El Puerto de Santa María (Cádiz), Spain.
  • Google Scholar
Carlos Infante
  • Carlos Infante
  • Fitoplancton Marino, S.L. Dársena Comercial S/N (Muelle Pesquero), 11500 El Puerto de Santa María (Cádiz), Spain.
  • Google Scholar


  •  Received: 20 May 2020
  •  Accepted: 08 June 2020
  •  Published: 30 June 2020

Abstract

The combined action of both endogenous and exogenous factors stimulates the production of free radicals and reactive oxygen species (ROS) in cells. They are neutralized by an elaborate antioxidant defense system, superoxide dismutase (SOD) being the first line of enzymes involved in ROS scavenging. However, when ROS production cannot be counteracted by cellular antioxidant mechanisms oxidative stress happens, inducing damages in proteins, lipids and DNA. It had been suggested that antioxidant supplementation may help to reduce oxidative stress. TetraSOD® is a unique marine healthy and functional ingredient that is produced under patent-protected technology, which exhibits a balanced nutritional composition and a significantly high SOD activity (>30,000 U/g). In this work, the antioxidant bioactivity of TetraSOD® in muscle cells (Normal Human Skeletal Muscle Myoblasts, HSMMs) was examined using an in vitro approach. Three different doses of SOD activity in TetraSOD® extracts were tested in cells: 30, 150 and 1500 U/ml. A statistically significant induction of the primary antioxidant enzyme activities, SOD, glutathione peroxidase (GPx), and catalase (CAT) was observed at the two higher doses in relation to the control. These results were further related to the expression of a selected set of genes involved in response against oxidative stress. A significant up-regulation of SOD1, SOD2, GPx1, CAT, NRF2 and HMOX1 was detected after TetraSOD® treatment with regard to the control, exhibiting different patterns in response to the applied dose to cells. Overall, the results obtained in this study might represent an important contribution to the understanding of the molecular basis underlying the potential cytoprotective effects induced by TetraSOD® consumption.

 

Key words: TetraSOD®, Tetraselmis chuii, oxidative stress, antioxidant, gene expression, enzyme activity, SOD, NRF2.