Abstract
Nonmelanoma skin cancer is the most common malignancy worldwide.
Cutaneous squamous cell carcinoma (SCC) is one of the most common human non-melanoma skin malignancies.
Its incidence varies considerably and is reported increasingly. Moreover, molecular changes and mechanisms that regulate development and progression of nonmelanoma skin cancer remain unclear. CXCL-8 (chemokine (C-X-C motif) ligand 8) is a chemokine produced by macrophages and other cell types such as epithelial cells, airway smooth muscle cells and endothelial cells.
This study demonstrated CXCL-8 as the main inflammatory mediators in skin cancer cells. Higher IL-1, IL-6, IL-8, TNF-a protein levels were found in SCC tissue than in NCMT.
CXCL-8 had the highest expression in SCC than in NCMT followed by other inflammatory mediators. Additionally, exposure of SCC cells to CXCL-8, the expression of IL-1, IL-6 and TNF-a was higher than vesicle control. Synthetic CXCL-8 siRNA abrogated the expression of IL-1B by SCC cells. These results examine that CXCL-8 is the major stimulus and co-operative effects for inflammatory mediators in nonmelanoma skin cancer