T cell chemotaxis and chemokine release after Staphylococcus aureus interaction with polarized airway epithelium.
In response to bacterial infection, airway epithelium releases inflammatory mediators including cytokines and chemokines that lead to immune cell efflux and could stimulate the adaptive T cell immune response. The aim of our study was to analyze, in a double chamber culture, the chemokine changes in response to Staphylococcus aureus and their consequences for T cells. Our data show that S. aureus stimulates basolateral and apical release of IL-8 and eotaxin by airway epithelial cells. We also observed increased chemokine receptor expression on CD8+ and CD4+ T cells and enhanced chemotaxis of CD4+ T cells toward apical supernatant. Our data strongly suggest that S. aureus interaction with airway epithelium contributes to specific migration of T cells to inflamed sites.
Escotte
Sandie
S
Laboratoire d'Immuno-Pharmacologie Cellulaire et Moléculaire, EA3796, Université de Reims Champagne Ardennes, IFR53, Reims, France.
Al Alam
Denise
D
Le Naour
Richard
R
Puchelle
Edith
E
Guenounou
Moncef
M
Gangloff
Sophie C
SC
D015496:CD4-Positive T-Lymphocytes / Q000502:physiology; D018414:CD8-Positive T-Lymphocytes / Q000502:physiology; D016764:Cell Polarity; D002478:Cells, Cultured; D054413:Chemokine CCL11; D018925:Chemokines / Q000378:metabolism*; D019742:Chemokines, CC / Q000378:metabolism; D002634:Chemotaxis, Leukocyte; D004847:Epithelial Cells / Q000378:metabolism / Q000382:microbiology*; D006801:Humans; D016209:Interleukin-8 / Q000378:metabolism; D019707:Receptors, Chemokine / Q000378:metabolism; D020545:Respiratory Mucosa / Q000276:immunology / Q000378:metabolism / Q000382:microbiology*; D013211:Staphylococcus aureus / Q000502:physiology*; D013601:T-Lymphocytes / Q000502:physiology*; D014132:Trachea / Q000166:cytology
C515456:CCL11 protein, human; D054413:Chemokine CCL11; D018925:Chemokines; D019742:Chemokines, CC; D016209:Interleukin-8; D019707:Receptors, Chemokine