B-lineage cells interact with antimicrobial peptides in the gingival tissue of stage 4 periodontitis.
This study highlights a significant interaction between B-lineage cells and antimicrobial peptides in stage 4 periodontitis, but the clinical implications remain uncertain.
Where it sits
this study against the rest of the ll-37 corpusSummary and findings
This study examined the interaction between B-lineage cells and antimicrobial peptides (AMPs) in gingival tissues from patients with stage 4 periodontitis. It analyzed samples from 10 patients and 2 healthy controls using imaging mass cytometry and confocal microscopy. The study found significant enrichment of antibody-secreting B-lineage cells in diseased tissues.
Abstract
Abstract Periodontitis is a major public health problem worldwide as it causes teeth loss and worsens systemic diseases such as diabetes and rheumatoid arthritis. Severe forms corresponding to stage 3 and stage 4 periodontitis are characterized by severe alveolar bone destruction and immune dysregulation, with B-lineage cells and antimicrobial peptides (AMPs) playing pivotal roles. However, the spatial and functional interactions of these actors in gingival tissues remain poorly understood. In this study, B-lineage cells in stage 4 periodontitis were identified and their association with AMPs deciphered. Gingival tissues from 10 patients and 2 healthy controls were analyzed using imaging mass cytometry (IMC), confocal microscopy immunofluorescence, and spatial proximity assays. Immune cell densities, phenotypic profiles, and the presence of AMPs (HNP1-3, LL-37) were quantified. B-lineage cells, particularly antibody-secreting cells, were significantly enriched in stage 4 periodontitis tissues and colocalized with HNP1-3 + neutrophils. Intracellular HNP1-3 was detected in plasma cells, suggesting possible internalization and an influence on plasma cell activity. These findings highlight a novel interaction between B-lineage cells and AMPs, providing insights into the immunopathogenesis of periodontitis and potential therapeutic targets.
Background
Not reported in abstract.
Methods
Not reported in abstract.
Results
Not reported in abstract.
Interpretation
Not reported in abstract.
Limitations
Not reported in abstract.