The Nrf2 activator tBHQ inhibits the activation of primary murine natural killer cells.

Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association
Allison P BossCheryl E Rockwell

Abstract

Tert-butylhydroquinone (tBHQ) is a commonly used food preservative with known immunomodulatory activity; however, there is little information regarding its role on natural killer (NK) cell activation and function. tBHQ is a known activator of the transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2), which results in induction of cytoprotective genes. Activation of Nrf2 has been shown to modulate immune responses in a number of different models. In addition, studies in our laboratory have shown that tBHQ inhibits numerous early events following T cell activation. In the current study, we investigated whether activated NK cells are impacted by tBHQ, since many signaling cascades that control NK cell effector function also contribute to T cell function. Splenocytes were isolated from female, wild-type C57Bl/6J mice and treated with 1 μM or 5 μM tBHQ. NK cell function was assessed after activation with phorbol 12-myristate 13-acetate (PMA) and ionomycin for 24 h. Activation of NK cells in the presence of tBHQ decreased total NK cell percentage, production of intracellular interferon gamma (IFNɣ), granzyme B, and perforin, and induction of the cell surface proteins CD25 and CD69, which are markers of NK cell activ...Continue Reading

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Citations

Dec 9, 2020·Skeletal Muscle·Iwona Bronisz-BudzyńskaJózef Dulak
Jul 24, 2020·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Jenna K Bursley, Cheryl E Rockwell
Apr 4, 2021·International Journal of Environmental Research and Public Health·Olga V NaidenkoSean Perrone-Gray

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