ArticleScientific reports2025
Lactococcus lactis subsp. cremoris C60 promotes immunoglobulin a production from B cells through functional modification of dendritic cells in the intestinal environment.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Who cites it
2 citing papers in PubMed.
- Lacticaseibacillus Strains Shape Intestinal Immune Homeostasis by Promoting Antimicrobial Activity and Modulating Antigen-Presenting Cells.Probiotics and antimicrobial proteins · 2026Article
- Article
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Authors and funding
5 authors.
Funding
Abstract
Probiotics utilizing lactic acid bacteria (LAB) have gained considerable attention in recent trends promoting self-managed health. Specifically, LAB-mediated immune modulation has been a key focus due to its potential to reduce the risk of pathogenic invasion and enhance host immunity. Immunoglobulin A (IgA) plays a crucial role in innate defense against various pathogens. Although only a limited number of probiotic LAB strains have been shown to increase IgA production, this capability remains of great interest. Here, we report a new strain, Lactococcus lactis subsp. cremoris C60 (C60), which promotes IgA production through functional modulation of intestinal B cells and dendritic cells (DCs). Heat-killed (HK)-C60 increased both pro-inflammatory and anti-inflammatory cytokine productions in DCs via the Toll-like receptor (TLR)- Myeloid differentiation primary response 88 (MyD88) signaling pathway, as demonstrated in both a physiological mouse model and in vitro cultures using bone marrow-derived dendritic cells (BMDCs). Notably, intragastric administration of HK-C60 significantly increased systemic IgA production, which was associated with the functional modification of B cells in the Peyer's patches (PPs) of the small intestine. Immunophenotyping of PP cells from HK-C60-administered mice revealed both an expansion and functional upregulation of B cells. Mechanistically, we identified that DC-derived interleukin-6 (IL-6) and IL-10 play essential roles in the C60-mediated increase in IgA production by B cells. Finally, we evaluated the effect of C60 on IgA production using human peripheral blood mononuclear cells (PBMCs). Consistent with our findings in the mouse model, PBMCs produced IgA upon HK-C60 stimulation in an IL-6- and IL-10-dependent manner. Our results suggest that C60 is a novel probiotic strain capable of enhancing IgA production in the intestinal environment, highlighting its potential for probiotic applications aimed at immune modulation.
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