Published on 01 January 2025

All raw individual data values

View Dataset
Gheitasi, Reza

Description

Staphylococcus aureus is a common human pathogen associated with many infections. The key factor contributing to the virulence of S. aureus is its ability to form difficult-to-treat and recalcitrant biofilms. One of the major staphylococcal biofilms matrix compounds is poly-N-acetylglucosamine (PNAG). In previous study, we observed an increased secretion of various cytokines and chemokines when immune cells were stressed by S. aureus biofilms. In this study, we aimed to analyze the effect of PNAG on the secretion of the CXCL10 chemokine subfamily by peripheral blood mononuclear cells and monocytes and studied the connection to the Dectin-1-Syk-CARD9 signaling pathway, as Dectin-1 is the major pattern recognized by polysaccharide structures. We showed that, in contrast to the major virulence factor surface protein A, PNAG primarily elevates the secretion of CXCL10. This secretion was interrupted by blocking the Dectin-1 receptor or tyrosine kinase Syk. PNAG exposure resulted in increased Dectin-1 and CARD9 expression as well as increased NF-κB and CXCL10 expression, which may be related to the long-term memory processes of T cells. Flow cytometric analysis confirmed that PNAG induces the formation of CD14+CXCL10+ monocytes that can migrate to the site of infection, triggering an innate immune response against S. aureus. This study provides insights into the complex interaction of the staphylococcal biofilms matrix with immune chemotaxis and shows that immunologic processes leading to bacterial infections should be viewed in a more differentiated manner, as biofilms are the preferred formation of microorganisms.

Citations (0)

Mentions (0)

Metrics

Dataset Index

0.3

FAIR Score

13%

Citations

0

Mentions

0

Metrics Over Time

Publication Details

Assigned Domain

Subfield

Radiology, Nuclear Medicine and Imaging

Field

Medicine

Domain

Health Sciences

Confidence Score

53%

Source

Scholar Data Model

Keywords

Cellular immunologyMedical bacteriologyInnate immunity

Normalization Factors

FT

13.46

CTw

1.00

MTw

1.00