Microbial metabolite sensor GPR43 controls severity of experimental GVHD.

Abstract:

:Microbiome-derived metabolites influence intestinal homeostasis and regulate graft-versus-host disease (GVHD), but the molecular mechanisms remain unknown. Here we show the metabolite sensor G-protein-coupled receptor 43 (GPR43) is important for attenuation of gastrointestinal GVHD in multiple clinically relevant murine models. GPR43 is critical for the protective effects of short-chain fatty acids (SCFAs), butyrate and propionate. Increased severity of GVHD in the absence of GPR43 is not due to baseline differences in the endogenous microbiota of the hosts. We confirm the ability of microbiome-derived metabolites to reduce GVHD by several methods, including co-housing, antibiotic treatment, and administration of exogenous SCFAs. The GVHD protective effect of SCFAs requires GPR43-mediated ERK phosphorylation and activation of the NLRP3 inflammasome in non-hematopoietic target tissues of the host. These data provide insight into mechanisms of microbial metabolite-mediated protection of target tissues from the damage caused allogeneic T cells.

journal_name

Nat Commun

journal_title

Nature communications

authors

Fujiwara H,Docampo MD,Riwes M,Peltier D,Toubai T,Henig I,Wu SJ,Kim S,Taylor A,Brabbs S,Liu C,Zajac C,Oravecz-Wilson K,Sun Y,Núñez G,Levine JE,van den Brink MRM,Ferrara JLM,Reddy P

doi

10.1038/s41467-018-06048-w

subject

Has Abstract

pub_date

2018-09-10 00:00:00

pages

3674

issue

1

issn

2041-1723

pii

10.1038/s41467-018-06048-w

journal_volume

9

pub_type

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