Cytotechnology

, Volume 68, Issue 5, pp 1949–1961 | Cite as

Effects of free amino acids on cytokine secretion and proliferative activity of feline T cells in an in vitro study using the cell line MYA-1

  • Nadine Paßlack
  • Marcus G. Doherr
  • Jürgen Zentek
Original Article

Abstract

In vitro studies might be an interesting screening method for targeted in vivo studies in the field of immunonutrition and help to reduce and refine animal studies. As the role of amino acids for immune function of cats has not been evaluated in detail so far, the present study aimed at investigating the effects of eight different amino acids (arginine, leucine, isoleucine, valine, glutamine, lysine, threonine and tryptophan) in six concentrations each (0, 0.25, 0.5, 1, 2 and 8x the cat blood level) on cytokine secretion and proliferative activity of feline T cells (MYA-1) in vitro. The results demonstrated that high doses of arginine increased IL-4, IL-10 and TNF-α secretion of T cells, while increasing concentrations of lysine increased IL-10 secretion and proliferative activity of the T cells. High doses of leucine enhanced GM-CSF and IL-10 secretion, while concentrations of threonine in the cell culture media greater than blood concentration also increased GM-CSF and additionally TNF-α secretion of the cells. The effects of glutamine and isoleucine on T cell function were only small. In conclusion, the present in vitro study could evaluate the immunomodulating potential of specific amino acids for feline T cell function. High doses of arginine, lysine, leucine and threonine had a significant impact on cytokine secretion and proliferative activity of the T cells. Targeted in vivo studies should investigate the clinical relevance of dietary supplementation of those amino acids in healthy and diseased cats as a next step.

Keywords

Feline T cells Amino acids Cytokines Proliferative activity In vitro 

Notes

Acknowledgments

This study was funded by the ESVCN/WALTHAM™ Research Grant 2012. The authors are grateful to Petra Huck for support in laboratory work.

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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • Nadine Paßlack
    • 1
  • Marcus G. Doherr
    • 2
  • Jürgen Zentek
    • 1
  1. 1.Department of Veterinary Medicine, Institute of Animal NutritionFreie Universität BerlinBerlinGermany
  2. 2.Department of Veterinary Medicine, Institute of Veterinary Epidemiology and BiostatisticsFreie Universität BerlinBerlinGermany

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