Peptides with immunomodulatory properties (Imuno TF®) increase the frequency of the CD8+ T cell population in vitro
DOI:
https://doi.org/10.33448/rsd-v13i8.46597Keywords:
Immune system; Immune peptides; Dietary supplement; Th1 response.Abstract
Imuno TF® is a food supplement composed of oligo- and polypeptides with roles in the immune system. It has been previously demonstrated that Imuno TF® positively regulated Th1 cytokines while decreasing Th2 cytokines (reduced secretion of IL-10 and increased secretion of IL-6 and TNF-α). Here we aimed to investigate the actions of Imuno TF® on the frequency of stimulated CD8+ and CD4+ T-cell populations and their cytokine productions. Human lymphocyte cultures were used for that, and IL-2, IFN-γ, IL-4, IL-5, IL-7, IL-13, and IL-35 were quantified by ELISA and RT qPCR. The frequency of CD4+ and CD8+ populations was investigated through flow cytometry. We observed an increased frequency of CD8+ T-cells after the combined stimulation of cells with Imuno TF® and ConA compared to controls. No differences were observed regarding the frequency of CD4+ T-cells. In addition, a significant increase in IL-2, IL-7, and IFN-γ levels was observed, while IL-4, IL-5, and IL-13 presented reduced levels. No alterations were observed in IL-35 levels. Our results suggest that the Imuno TF® can potentially increase the CD8+ T-cell population by positively regulating cytokines associated with Th1 response and increased IL-7 levels while reducing Th2 cytokine-mediated immune responses.
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Copyright (c) 2024 Carlos Rocha Oliveira; Valéria de Lima Kaminski; Rodolfo de Paula Vieira; Anderson Ferreira; Fabiana Regina da Silva Olímpio; Flávio Vieira Loures; Flavio Aimbire; Hudson Polonini
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