Publication Details

Category Text Publication
Reference Category Journals
DOI 10.3389/fmicb.2020.00755
Licence creative commons licence
Title (Primary) The activation of mucosal-associated invariant T (MAIT) cells is affected by microbial diversity and riboflavin utilization in vitro
Author Krause, J.L.; Schäpe, S.S.; Schattenberg, F.; Müller, S.; Ackermann, G.; Rolle-Kampczyk, U.E.; Jehmlich, N. ORCID logo ; Pierzchalski, A.; von Bergen, M.; Herberth, G. ORCID logo
Source Titel Frontiers in Microbiology
Year 2020
Department UMB; IMMU; MOLSYB
Volume 11
Page From art. 755
Language englisch
Supplements https://www.frontiersin.org/articles/10.3389/fmicb.2020.00755/full#supplementary-material
Keywords human MAIT cells; gut microbiota; folate metabolism; microbial stress; riboflavin metabolism; SIHUMIx
Abstract Recent research has demonstrated that MAIT cells are activated by individual bacterial or yeasts species that possess the riboflavin biosynthesis pathway. However, little is known about the MAIT cell activating potential of microbial communities and the contribution of individual community members. Here, we analyze the MAIT cell activating potential of a human intestinal model community (SIHUMIx) as well as intestinal microbiota after bioreactor cultivation. We determined the contribution of individual SIHUMIx community members to the MAIT cell activating potential and investigated whether microbial stress can influence their MAIT cell activating potential. The MAIT cell activating potential of SIHUMIx was directly related to the relative species abundances in the community. We therefore suggest an additive relationship between the species abundances and their MAIT cell activating potential. In diverse microbial communities, we found that a low MAIT cell activating potential was associated with high microbial diversity and a high level of riboflavin demand and vice versa. We suggest that microbial diversity might affect MAIT cell activation via riboflavin utilization within the community. Microbial acid stress significantly reduced the MAIT cell activating potential of SIHUMIx by impairing riboflavin availability through increasing the riboflavin demand. We show that MAIT cells can perceive microbial stress due to changes in riboflavin utilization and that riboflavin availability might also play a central role for the MAIT cell activating potential of diverse microbiota.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=23043
Krause, J.L., Schäpe, S.S., Schattenberg, F., Müller, S., Ackermann, G., Rolle-Kampczyk, U.E., Jehmlich, N., Pierzchalski, A., von Bergen, M., Herberth, G. (2020):
The activation of mucosal-associated invariant T (MAIT) cells is affected by microbial diversity and riboflavin utilization in vitro
Front. Microbiol. 11 , art. 755 10.3389/fmicb.2020.00755