Catherine Mooser, Francesca Ronchi, Julien P. Limenitakis, Cristina Kalbermatter, Sandro Christensen, Mercedes Gomez de Agüero, Tobias Fuhrer, Uwe Sauer, Andrew J. Macpherson, Stephanie C. Ganal-Vonarburg
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引用次数: 0
Abstract
A hallmark of the main secreted antibody immunoglobulin A (IgA) is its mutational load that accumulates throughout life. Although this is mainly interpreted in terms of continuing microbial induction, we show that dietary composition during early life can promote IgA induction, its repertoire, and mutational diversification independently of microbial exposure. Using germ-free and colonized mice fed different diets formulated with proprietary grain-based processing or from purified chemicals with different principal macronutrient calorie sources, we found that dietary lipopolysaccharide contamination led to Toll-like receptor (TLR) 4 signaling and promoted germinal center activity in the intestinal immune compartment. The effects of lipopolysaccharide on mucosal immune induction were phenocopied only when presented within colloidal liposomes rather than in dispersed solution. These findings indicate that dietary composition and its formulation can leave a durable impression on the resultant IgA repertoire.
期刊介绍:
Immunity is a publication that focuses on publishing significant advancements in research related to immunology. We encourage the submission of studies that offer groundbreaking immunological discoveries, whether at the molecular, cellular, or whole organism level. Topics of interest encompass a wide range, such as cancer, infectious diseases, neuroimmunology, autoimmune diseases, allergies, mucosal immunity, metabolic diseases, and homeostasis.