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. 2024 Aug;177(4):488-492.
doi: 10.1007/s10517-024-06212-x. Epub 2024 Sep 12.

The Influence of Metabolites of Microorganisms of the Genus Bacillus from Permafrost Rocks on T Lymphocyte Differentiation

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The Influence of Metabolites of Microorganisms of the Genus Bacillus from Permafrost Rocks on T Lymphocyte Differentiation

S A Petrov et al. Bull Exp Biol Med. 2024 Aug.

Abstract

We studied the influence of metabolites of permafrost microorganisms obtained at different temperature incubation conditions on activity of differentiation of regulatory (Treg) and effector T lymphocytes. It was found that the effect of metabolites is largely regulated by their type that depends on the temperature of production ("cold" at 5°C, "medium temperature" at 22°C, and "warm" at 37°C). The studied metabolites influenced the differentiation of Tregs (CD4+CD25hiCD127-) and the expression of markers of early (CD69), middle (CD25), and late (HLA DR) activation of CD4+ and CD8+ T lymphocytes. In the case of "cold" metabolites, the increase in Treg levels was associated with a decrease in the intensity of CD4+ T lymphocyte differentiation, and under the influence of "warm" metabolites - with a decrease in the activity of CD8+ T lymphocyte differentiation. Under the influence of "medium-temperature" metabolites, Tregs had approximately the same effect on the intensity of CD4+ and CD8+ T lymphocyte differentiation.

Keywords: CD4+CD25hiCD127— Treg; CD69, CD25, HLA DR T lymphocytes; bacterial metabolites; factors regulating lymphocyte differentiation; microorganisms of the genus Bacillus from permafrost rocks.

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