Abstract:
:Regulation of respiratory mucosal immunity by microbial-derived metabolites has been a proposed mechanism that may provide airway protection. Here we examine the effect of oral Lactobacillus johnsonii supplementation on metabolic and immune response dynamics during respiratory syncytial virus (RSV) infection. L. johnsonii supplementation reduced airway T helper type 2 cytokines and dendritic cell (DC) function, increased regulatory T cells, and was associated with a reprogrammed circulating metabolic environment, including docosahexanoic acid (DHA) enrichment. RSV-infected bone marrow-derived DCs (BMDCs) from L. johnsonii-supplemented mice had altered cytokine secretion, reduced expression of co-stimulatory molecules, and modified CD4+ T-cell cytokines. This was replicated upon co-incubation of wild-type BMDCs with either plasma from L. johnsonii-supplemented mice or DHA. Finally, airway transfer of BMDCs from L. johnsonii-supplemented mice or with wild-type derived BMDCs pretreated with plasma from L. johnsonii-supplemented mice reduced airway pathological responses to infection in recipient animals. Thus L. johnsonii supplementation mediates airway mucosal protection via immunomodulatory metabolites and altered immune function.
journal_name
Mucosal Immunoljournal_title
Mucosal immunologyauthors
Fonseca W,Lucey K,Jang S,Fujimura KE,Rasky A,Ting HA,Petersen J,Johnson CC,Boushey HA,Zoratti E,Ownby DR,Levine AM,Bobbit KR,Lynch SV,Lukacs NWdoi
10.1038/mi.2017.13subject
Has Abstractpub_date
2017-11-01 00:00:00pages
1569-1580issue
6eissn
1933-0219issn
1935-3456pii
mi201713journal_volume
10pub_type
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