Selenium-rich maize modulates the expression of prostaglandin genes in lipopolysaccharide-stimulated RAW264.7 macrophages

Cell signaling is necessary for the organs to co-ordinate with the whole body and it includes response to external stimuli, inflammation, hormonal secretions and other various metabolic functions. In the present study, we have focused on the inflammatory signals modulated by the reactive oxygen and nitrogen species (RONS). Under homeostatic conditions, these species turn on the COX-1-dependent arachidonic acid (AA) pathway towards the release of anti-inflammatory enzymes. However, the excess release of these ions induces negative effects in the form of inflammation by turning on the COX-2-dependent AA pathway to release pro-inflammatory enzymes. In the present study, we observed the shunting of the COX-2-dependent AA pathway towards the release of anti-inflammatory enzymes with the supplementation of organic dietary selenium in the form of seleniferous maize extracts. We observed that 500 nM selenium concentration in Se-maize extracts downregulated the COX-2 and mPGES-1 expressions by 3.8- A nd 3.2-fold and upregulated the GPx-1 and H-PGDS expressions by 5.0- A nd 5.4-fold, respectively. To facilitate more availability of Se from the dietary matrices, Se-maize extracts were incubated with rMETase. It was observed that the enzyme-treated cells increased the downregulation of COX-2 and mPGES-1 expressions by 24.8- A nd 21.0-fold and the upregulation of GPx-1 and H-PGDS expressions by 13.2- A nd 16.5-fold, respectively. © 2019 The Royal Society of Chemistry.

Dhanjal N.I.1 , Sharma S.1 , Skalny A.V. 2, 3, 4 , Skalnaya M.G. 3, 5 , Ajsuvakova O.P. 2, 3 , Tinkov A.A. 2, 3, 6 , Zhang F.7 , Guo X.7 , Prabhu K.S.8 , Tejo Prakash N.
Royal Society of Chemistry
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  • 1 Thapar Institute of Engineering and Technology, Patiala, India
  • 2 Yaroslavl State University, Yaroslavl, Russian Federation
  • 3 IM Sechenov First Moscow State Medical University, Moscow, Russian Federation
  • 4 Federal Research Centre of Biological Systems, Agro-Technologies of the Russian Academy of Sciences, Orenburg, Russian Federation
  • 5 Peoples' Friendship University of Russia, RUDN University, Moscow, Russian Federation
  • 6 Institute of Cellular and Intracellular Symbiosis, Russian Academy of Sciences, Orenburg, Russian Federation
  • 7 Key Laboratory of Trace Elements and Endemic Diseases of National Health, School of Public Health, Health Science Center, Xian Jiaotong University, Xian, China
  • 8 Department of Veterinary and Biomedical Sciences, Penn State Cancer Institute, Pennsylvania State University, University Park, PA, United States
Ключевые слова
Ascorbic acid; Cell signaling; Dietary supplements; Enzymes; Pathology; Selenium; Anti-inflammatories; Arachidonic acids; External stimulus; Hormonal secretions; Lipopolysaccharides; Metabolic function; Reactive oxygen and nitrogen species; Selenium concentrations; Gene expression
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