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Phospholipid Metabolites of the Gut Microbiota Promote Hypoxia-induced Intestinal Injury via CD1d-dependent gd T Cells

ABSTRACT: Phospholipid Metabolites of the Gut Microbiota Promote Hypoxia-induced Intestinal Injury via CD1d-dependent gd T Cells

PROVIDER: PRJNA821057 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18516200_1.fastq.gz	Fastqsanger.gz
	SRR18516200_2.fastq.gz	Fastqsanger.gz
	SRR18516201_1.fastq.gz	Fastqsanger.gz
	SRR18516201_2.fastq.gz	Fastqsanger.gz
	SRR18516202_1.fastq.gz	Fastqsanger.gz

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Phospholipid Metabolites of the Gut Microbiota Promote Hypoxia-induced Intestinal Injury via CD1d-dependent gd T Cells

Project description:Phospholipid metabolites PE and PC are presented by intestinal epithelial CD1d to induce the proliferation of IL-17A-producing γδ T cells, which aggravates intestinal injury.

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Phospholipid metabolites of the gut microbiota promote hypoxia-induced intestinal injury via CD1d-dependent γδ T cells.

Project description:Gastrointestinal dysfunction is a common symptom of acute mountain sickness (AMS). The gut microbiota and γδ T cells play critical roles in intestinal disease. However, the mechanistic link between the microbiota and γδ T cells in hypoxia-induced intestinal injury remains unclear. Here, we show that hypoxia-induced intestinal damage was significantly alleviated after microbiota depletion with antibiotics. Hypoxia modulated gut microbiota composition by promoting antimicrobial peptides angiogenin-4 secretions. The abundance of Clostridium in the gut of mice after hypoxia significantly decreased, while the abundance of Desulfovibrio significantly increased. Furthermore, Desulfovibrio-derived phosphatidylethanolamine and phosphatidylcholine promoted γδ T cell activation. In CD1d-deficient mice, the levels of intraepithelial IL-17A and γδ T cells and intestinal damage were significantly decreased compared with those in wild-type mice under hypoxia. Mechanistically, phospholipid metabolites from Desulfovibrio are presented by intestinal epithelial CD1d to induce the proliferation of IL-17A-producing γδ T cells, which aggravates intestinal injury. Gut microbiota-derived metabolites promote hypoxia-induced intestinal injury via CD1d-dependent γδ T cells, suggesting that phospholipid metabolites and γδ T cells can be targets for AMS therapy.

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