Lipoteichoic Acid-Mediated Immune Modulation in Gut Health
Summary
Lipoteichoic acid (LTA) is a key component of Gram-positive bacterial cell walls that acts as a microbe-associated molecular pattern within the gastrointestinal tract. By engaging pattern recognition receptors on epithelial and immune cells, LTA shapes innate and adaptive responses that underpin gut homeostasis, barrier integrity and tolerance to commensals. Structural heterogeneity, including glycerophosphate backbone modifications, lipid chain composition and D-alanine substitutions, determines receptor affinity and downstream signalling through pathways such as NF-κB and MAPK. These interactions influence cytokine secretion, dendritic cell maturation and T-cell priming, thereby balancing protective immunity against pathogens with regulation of inflammation. Understanding LTA-mediated modulation offers prospects for targeted interventions in inflammatory bowel disease, mucosal vaccination and probiotic development.
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Lipoteichoic Acid-Mediated Immune Modulation in Gut Health publication trend
The graph below shows the total number of articles in lipoteichoic acid-mediated immune modulation in gut health across all publications each year (not limited to Nature Index journals).
Technical terms
Lipoteichoic acid (LTA): An amphiphilic polymer in the cell membrane of Gram-positive bacteria that triggers host immune signalling.
Toll-like receptor 2 (TLR2): A host pattern recognition receptor that recognises LTA and initiates innate immune responses.
Nuclear factor kappa B (NF-κB): A transcription factor that controls the expression of inflammatory cytokines and immune regulatory genes.
Mitogen-activated protein kinases (MAPK): A family of signalling kinases that transduce extracellular stimuli into cellular responses, including inflammation.
Dendritic cell (DC): An antigen-presenting cell in the gut mucosa that links innate detection of microbial signals to adaptive T-cell responses.
Gut-associated lymphoid tissue (GALT): Organised immune structures in the intestinal mucosa where microbial antigens are sampled and adaptive immunity is initiated.
References
- Lipoteichoic Acid of Probiotic Lactobacillus plantarum Attenuates Poly I:C-Induced IL-8 Production in Porcine Intestinal Epithelial Cells. Frontiers in Microbiology (2017).
- Lipoteichoic Acid from Lacticaseibacillus rhamnosus GG Modulates Dendritic Cells and T Cells in the Gut. Nutrients (2022).
- Structure and Anti-Inflammation Potential of Lipoteichoic Acids Isolated from Lactobacillus Strains. Foods (2022).
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