Language
English
Publication Date
9-13-2023
Journal
Nature Communications
DOI
10.1038/s41467-023-40910-w
PMID
37704604
PMCID
PMC10499810
PubMedCentral® Posted Date
9-13-2023
PubMedCentral® Full Text Version
Post-print
Abstract
Intestinal barrier dysfunction leads to inflammation and associated metabolic changes. However, the relative impact of gut bacteria versus non-bacterial insults on animal health in the context of barrier dysfunction is not well understood. Here, we establish that loss of Drosophila N-glycanase 1 (Pngl) in a specific intestinal cell type leads to gut barrier defects, causing starvation and JNK overactivation. These abnormalities, along with loss of Pngl in enterocytes and fat body, result in Foxo overactivation, leading to hyperactive innate immune response and lipid catabolism and thereby contributing to lethality. Germ-free rearing of Pngl mutants rescued their developmental delay but not lethality. However, raising Pngl mutants on isocaloric, fat-rich diets partially rescued lethality. Our data indicate that Pngl functions in Drosophila larvae to establish the gut barrier, and that the lethality caused by loss of Pngl is primarily mediated through non-bacterial induction of immune and metabolic abnormalities.
Keywords
Animals, Drosophila, Lipolysis, Adipose Tissue, Enterocytes, Lipids, Developmental biology, Genetics, Innate immunity, Glycosylation
Published Open-Access
yes
Recommended Citation
Pandey, Ashutosh; Galeone, Antonio; Han, Seung Yeop; et al., "Gut Barrier Defects, Intestinal Immune Hyperactivation and Enhanced Lipid Catabolism Drive Lethality in NGLY1-Deficient Drosophila" (2023). Faculty and Staff Publications. 2193.
https://digitalcommons.library.tmc.edu/baylor_docs/2193
Included in
Biological Phenomena, Cell Phenomena, and Immunity Commons, Biomedical Informatics Commons, Genetics and Genomics Commons, Medical Genetics Commons, Medical Molecular Biology Commons, Medical Specialties Commons