Helmholtz Gemeinschaft

Search
Browse
Statistics
Feeds

Regulating T-cell differentiation through the polyamine spermidine

[thumbnail of Original Article]
Preview
PDF (Original Article) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
5MB

Item Type:Article
Title:Regulating T-cell differentiation through the polyamine spermidine
Creators Name:Carriche, G.M., Almeida, L., Stüve, P., Velasquez, L., Dhillon-LaBrooy, A., Roy, U., Lindenberg, M., Strowig, T., Plaza-Sirvent, C., Schmitz, I., Lochner, M., Simon, A.K. and Sparwasser, T.
Abstract:BACKGROUND: The cross-talk between the host and its microbiota plays a key role in the promotion of health. The production of metabolites such as polyamines by intestinal-resident bacteria is part of this symbiosis shaping host immunity. The polyamines putrescine, spermine, and spermidine are abundant within the gastrointestinal tract and might substantially contribute to gut immunity. OBJECTIVE: We aimed to characterize the polyamine spermidine as a modulator of T-cell differentiation and function. METHODS: Naive T cells were isolated from wild-type mice or cord blood from healthy donors and submitted to polarizing cytokines, with and without spermidine treatment, to evaluate CD4(+) T-cell differentiation in vitro. Moreover, mice were subjected to oral supplementation of spermidine, or its precursor l-arginine, to assess the frequency and total numbers of regulatory T (Treg) cells in vivo. RESULTS: Spermidine modulates CD4(+) T-cell differentiation in vitro, preferentially committing naive T cells to a regulatory phenotype. After spermidine treatment, activated T cells lacking the autophagy gene Atg5 fail to upregulate Foxp3 to the same extent as wild-type cells. These results indicate that spermidine's polarizing effect requires an intact autophagic machinery. Furthermore, dietary supplementation with spermidine promotes homeostatic differentiation of Treg cells within the gut and reduces pathology in a model of T-cell transfer-induced colitis. CONCLUSION: Altogether, our results highlight the beneficial effects of spermidine, or l-arginine, on gut immunity by promoting Treg cell development.
Keywords:Polyamines, Spermidine, Gut Immunity, Treg Cells, T(H)17 Cells, Animals, Mice
Source:Journal of Allergy and Clinical Immunology
ISSN:0091-6749
Publisher:Elsevier
Volume:147
Number:1
Page Range:335-348
Date:January 2021
Official Publication:https://doi.org/10.1016/j.jaci.2020.04.037
PubMed:View item in PubMed

Repository Staff Only: item control page

Downloads

Downloads per month over past year

Open Access
MDC Library