期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 70, 期 10, 页码 3344-3356出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.1c07482
关键词
food allergy; ovalbumin; gut microbiota; metabolomics; metabolites; Lactobacillaceae; Clostridium; aminoacyl-tRNA biosynthesis; indole-3-propionic acid
资金
- National Key Research and Development Program of China [2021YFC2101400]
- National First-Class Discipline Program of Food Science and Technology [UFSTR20180303]
- Collaborative Innovation Center of Food Safety and Quality Control
Gut microbiota affects the occurrence of food allergies by producing metabolites and modulating the immune system. This study found that specific metabolites and bacterial groups may be associated with the regulation of allergic responses in an ovalbumin-sensitive mouse model through metabolomic and microbiomic analyses.
Gut microbiota plays an important role in the regulation of food allergy. However, the interactions between the gut flora and immune system are not well studied. Here, we obtained ovalbumin (OVA)-sensitive BALB/c mice, combined with serum untargeted metabolomics to investigate the mechanisms of the interactions. The serum metabolomics results showed that 17 serum metabolites were downregulated, enriched in the aminoacyl-tRNA biosynthesis pathway, whereas indole-3-propionic acid (IPA) was increased. Six operational taxonomic units (OTUs) at the family level were altered and correlated with immune endpoints. Combined metabolomic and microbiomic analyses revealed that IPA levels were correlated with differential bacterial OTUs and a positive correlation with Treg in splenic lymphocytes. These results suggest that the regulatory effects of intestinal flora on allergic responses may be achieved by metabolizing tryptophan to produce indole derivatives and the aminoacyl-tRNA biosynthesis pathway. The formation of OVA tolerance in mice may be related to the enrichment of Peptostreptococcaceae, Ruminococcaceae, and Lactobacillaceae.
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